TW202216193A - 包含抗CD19抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽之抗腫瘤組合療法 - Google Patents
包含抗CD19抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽之抗腫瘤組合療法 Download PDFInfo
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Abstract
本發明係針對一種用於治療癌症(尤其諸如白血病或淋巴瘤之血液癌)的組合療法,該療法包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
Description
本發明係針對一種用於治療白血病或淋巴瘤之組合療法,該療法包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
CD19為含有兩個胞外免疫球蛋白樣域及一個外延細胞質尾區之免疫球蛋白超家族中之95-kDa跨膜糖蛋白。該蛋白質為泛B淋巴球表面受體且自前B細胞向前發育之最早階段廣泛地表現,直至其在最終分化成血漿細胞期間下調。其為B淋巴球譜系特異性的且不表現於造血幹細胞及其他免疫細胞上,除一些濾泡性樹突狀細胞之外。CD19充當B細胞受體(BCR)信號傳導之正調節劑且對B細胞活化及增殖及產生體液免疫反應非常重要。其充當與CD21及CD81結合之共刺激分子,且對於B細胞對T細胞依賴性抗原之反應至關重要。CD19之胞質尾區與經由蛋白質酪胺酸激酶src家族觸發下游信號傳導路徑之酪胺酸激酶家族實體上相關聯。CD19由於其高度表現於幾乎所有慢性淋巴球性白血病(CLL)及非霍奇金氏淋巴瘤(non-Hodgkin's lymphomas;NHL)以及許多其他不同類型之白血病(包括急性淋巴球性白血病(ALL)及毛細胞白血病(HCL))中而為淋巴源癌症之有吸引力的目標。
塔法西塔單抗(Tafasitamab) (先前名稱:MOR208及XmAb
®5574)為靶向抗原CD19 (參與B細胞受體信號傳導之跨膜蛋白)之人類化單株抗體。塔法西塔單抗已在IgG Fc區中經工程改造以增強抗體依賴性細胞介導之細胞毒性(ADCC),因此改良腫瘤細胞殺死之關鍵機制且相較於習知抗體(即非增強型抗體)提供增強功效之潛力。已在或當前正在若干臨床試驗,諸如CLL、ALL及NHL中研究塔法西塔單抗。在彼等試驗中之一些中,塔法西塔單抗與艾德昔布(Idelalisib)、來那度胺(Lenalidomide)或維奈托克(Venetoclax)組合使用。
不管若干抗癌劑之近期發現及研發如何,由於許多類型之癌症(包括表現CD19之腫瘤)之不良預後,因此仍需要用於治療此等類型之癌症的改良方法或治療劑。
因此,本發明人已確認組合投與對CD19具有特異性之抗體或抗體片段以及阻斷SIRPα-CD47先天免疫檢查點之多肽對B細胞源之惡性淋巴瘤之治療具有優良效應,且已完成本發明。
本發明提供一種用於治療癌症之新穎組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
巨噬細胞為存在於所有組織中的先天免疫細胞。在癌症中,巨噬細胞可取決於細胞信號而促進或抑制腫瘤生長。巨噬細胞之子集的表徵已顯露至少2個子集;一個子集,M2巨噬細胞產生精胺酸酶且促進腫瘤生長,而另一子集,M1巨噬細胞產生氧化亞氮合成酶且介導殺死腫瘤。巨噬細胞可經由抗體依賴性機制殺死,諸如抗體依賴性細胞吞噬作用(ADCP)或抗體非依賴性機制。
不同於健康細胞,非所需的老化或染色細胞顯示稱作「吃我」信號即「自身修飾(altered self)」之標記物或配位體,其可隨後藉由諸如嗜中性球、單核球及巨噬細胞之吞噬細胞上之受體識別。健康細胞可顯示有效地抑制吞噬作用之「不吃我」信號;此等信號在死亡細胞中經下調、存在於更改構形中或其藉由「吃我」或促吞噬其用於信號的上調而被取代。健康細胞上之細胞表面蛋白CD47及其吞噬細胞受體、信號調控蛋白α (SIRPα)之接合構成可關閉藉由多個模式介導之吞沒的關鍵「不吃我」信號,該等模式包括凋亡細胞清除及FcR介導吞噬作用。阻斷CD47介導的吞噬細胞上之SIRP接合,或基因剔除小鼠中CD47表現之損失可導致活細胞及未老化紅血球之移除。針對亦呈現預吞噬信號之彼等細胞,阻斷SIRPoc亦允許吞沒不通常吞噬之目標。
CD47為廣泛地表現之具有單一Ig樣域及五個跨膜區之跨膜醣蛋白,該跨膜醣蛋白在經由SIRPoc之NH2端V樣域介導之結合下充當SIRPoc之細胞配位體。SIRPoc主要表現於骨髓細胞上,該等骨髓細胞包括巨噬細胞、粒細胞、骨髓樹突狀細胞(DC)、肥胖細胞及其前驅體,包括造血幹細胞。SIRPoc上介導CD47結合之結構決定子由Lee等人(2007)J.Immunol.179:7741-7750;Hatherley等人(2007) J . B.C .282:14567-75論述;且SIRPoc順二聚合於CD47結合中之作用由Lee等人(2010) J . B.C .285:37953-63論述。與CD47抑制正常細胞之吞噬作用之作用保持一致,有跡象表明,CD47僅在造血幹細胞(HSC)及先驅細胞遷移期之前及期間在該等細胞上暫時性上調,且此等細胞上之CD47含量決定該等細胞經活體內吞沒之機率。
迄今為止,CD47在測試之所有癌症中過度表現。實際上,已展示相對於正常細胞,CD47在腫瘤上過度表現約3.3倍(Majeti等人(2009) Cell 138:286-289:Willingham等人(2012)PNAS 109:6662-6667)。
計劃性細胞死亡(PCD)及吞噬細胞移除為生物體反應以移除損壞、癌變前或感染細胞之方式。因此,存在此生物體反應之細胞(例如癌細胞、慢性感染細胞等)已設計避開PCD及吞噬細胞移除之方式。CD47「不吃我」信號在廣泛多種病變細胞、癌細胞及感染細胞上構成性地上調,從而允許此等細胞避開吞噬作用。阻斷一種細胞(例如癌細胞、感染細胞等)上之CD47與另一種細胞(例如吞噬細胞)上之SIRPoc之間的相互作用之抗CD47劑抵消CD47表現之增加且促進癌細胞及/或感染細胞之吞噬作用。因此,抗CD47劑可用以治療及/或預防廣泛多種病況/病症。
在本發明中,本發明者已組合靶向CD19之抗體塔法西塔單抗(Fc增強型)與靶向CD47之抗體且評估抗腫瘤活性。在活體外及活體內,當塔法西塔單抗與靶向CD47之抗體組合時觀測顯著增加之抗腫瘤效應。
總而言之,已表明投與塔法西塔單抗及例如經由靶向CD47之抗體或靶向SIRPα之抗體阻斷SIRPα-CD47先天免疫檢查點可作為用於淋巴瘤及白血病療法之有前景的途徑。
本文提供一種用於治療血液癌之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。在一些實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。
在一個態樣中,本發明提供一種用於治療血液癌之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中阻斷SIRPα-CD47先天免疫檢查點之該多肽為與人類CD47或人類SIRPα特異性結合之抗體或抗體片段或多肽類SIRPα反應劑。
在另一態樣中,本發明提供一種套組,其包含抗CD19抗體或其抗體片段及與阻斷SIRPα-CD47先天免疫檢查點之多肽組合投與該抗CD19抗體或其抗體片段之說明書。在一實施例中,阻斷SIRPα-CD47先天免疫檢查點之該多肽為與人類CD47或人類SIRPα特異性結合之抗體或抗體片段或多肽類SIRPα反應劑。
在一個態樣中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中用於治療癌症的對CD19具有特異性之抗體或抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列SYVMH (SEQ ID NO: 1)之HCDR1區、包含序列NPYNDG (SEQ ID NO: 2)之HCDR2區,及包含序列GTYYYGTRVFDY (SEQ ID NO: 3)之HCDR3區;該輕鏈可變區包含:包含序列RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、包含序列RMSNLNS (SEQ ID NO: 5)之LCDR2區,及包含序列MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。
在一個態樣中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中對CD19具有特異性之該抗體或抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:SYVMH (SEQ ID NO: 1)之HCDR1區、NPYNDG (SEQ ID NO: 2)之HCDR2區,及GTYYYGTRVFDY (SEQ ID NO: 3)之HCDR3區;該輕鏈可變區包含:RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、RMSNLNS (SEQ ID NO: 5)之LCDR2區,及MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。
在另一態樣中,對CD19具有特異性之抗體或抗體片段具有效應功能。在另一態樣中,對CD19具有特異性之抗體或抗體片段具有增強型效應功能。在一個實施例中,效應功能為ADCC。在一個實施例中,對CD19具有特異性之抗體或抗體片段具有增強的ADCC活性。在另一實施例中,對CD19具有特異性之抗體或抗體片段包含Fc域,其包含位置S239及/或I332處的胺基酸取代,其中編號係根據如同Kabat之EU索引。
在又一態樣中,對CD19具有特異性之抗體包含以下重鏈恆定區:
ASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK (SEQ ID NO: 9)及以下輕鏈恆定區:
在又一態樣中,對CD19具有特異性之抗體包含以下重鏈區:
EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK (SEQ ID NO: 11)及以下輕鏈區:
在一個態樣中,本發明提供一種用於治療癌症之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中該癌症為血液癌。在一個實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在另一實施例中,血液癌為非霍奇金氏淋巴瘤(NHL)。在另一實施例中,非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤(Burkitt's lymphoma)及套細胞淋巴瘤。
在一個態樣中,本發明提供用於治療癌症之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中對CD19具有特異性之抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽以單獨方式投與。
在一個態樣中,本發明提供用於治療癌症之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中對CD19具有特異性之抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽以同步方式投與。
在一個態樣中,本發明提供一種用於治療血液癌之醫藥組合,其包含抗CD19抗體或其抗體片段及抗CD47抗體或其抗體片段,其中抗CD19抗體或其抗體片段包含以下重鏈可變區:EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSS (SEQ ID NO: 7)及以下輕鏈可變區:
且其中抗CD47抗體或其片段包含以下重鏈可變區:QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSS (SEQ ID NO: 30)及以下輕鏈可變區:
DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIK (SEQ ID NO:31)。在一個實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在另一實施例中,血液癌為非霍奇金氏淋巴瘤(NHL)。在另一實施例中,非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。在另一實施例中,血液癌為彌漫性大B細胞淋巴瘤。
在一個態樣中,本發明提供一種用於治療血液癌之醫藥組合,其包含抗CD19抗體或其抗體片段及抗CD47抗體或其抗體片段,其中抗CD19抗體或其抗體片段包含以下重鏈區:
EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK (SEQ ID NO: 11)及以下輕鏈區:
且其中抗CD47抗體或其片段包含以下重鏈:QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSSASTKGPSVFPLAPCSRSTSESTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTKTYTCNVDHKPSNTKVDKRVESKYGPPCPPCPAPEFLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKGLPSSIEKTISKAKGQPREPQVYTLPPSQEEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSRLTVDKSRWQEGNVFSCSVMHEALHNHYTQKSLSLSLGK (SEQ ID NO: 34)及以下輕鏈:DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC (SEQ ID NO:35)。在一個實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在另一實施例中,血液癌為非霍奇金氏淋巴瘤(NHL)。在另一實施例中,非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。在另一實施例中,血液癌為彌漫性大B細胞淋巴瘤。
定義
術語「
CD19」係指稱為CD19之蛋白質,其具有以下同義詞:B4、B淋巴球抗原CD19、B淋巴球表面抗原B4、CVID3、分化抗原CD19、MGC12802及T細胞表面抗原Leu-12。
根據表1,「
MOR208」及「
XmAb 5574」及「
塔法西塔單抗」用作抗CD19抗體之同義詞。表1提供MOR208/塔法西塔單抗之胺基酸序列。MOR208抗體描述於美國專利申請案序列號12/377,251中,其以全文引用之方式併入。美國專利申請案序列號12/377,251描述了名為4G7 H1.52 Hybrid S239D/I332E/4G7 L1.155之抗體(後來命名為MOR208及塔法西塔單抗)。
如本文所使用,術語「
抗體」係指包含藉由二硫鍵互連之至少兩個重(H)鏈及兩個輕(L)鏈之蛋白質,其與抗原相互作用。各重鏈包含可變重鏈區(在本文中縮寫為VH)及重鏈恆定區。重鏈恆定區包含三個域,CH1、CH2及CH3。各輕鏈包含可變輕鏈區(本文中縮寫為VL)及輕鏈恆定區。輕鏈恆定區包含一個域,CL。VH及VL區可進一步細分成稱為互補決定區(CDR)之高變區,穿插有稱為構架區(FR)之更保守區。各VH及VL係由自胺基端至羧基端按以下次序排列之三個CDR及四個FR構成:FR1、CDR1、FR2、CDR2、FR3、CDR3及FR4。重鏈及輕鏈之可變區含有與抗原相互作用之結合域。術語「抗體」包括例如單株抗體、人類抗體、人類化抗體、駱駝化抗體及嵌合抗體。抗體可具有任何同型(例如IgG、IgE、IgM、IgD、IgA及IgY)、類別(例如IgG1、IgG2、IgG3、IgG4、IgA1及IgA2)或子類別。輕鏈及重鏈兩者分成具有結構及功能同源性的區。
如本文所用,術語「
抗體片段」係指抗體之一或多個部分,其保留與抗原特異性相互作用(例如藉由結合、位阻、穩定空間分佈)之能力。結合片段之實例包括(但不限於):Fab片段,由VL域、VH域、CL域及CH1域組成之單價片段;F(ab)2片段,包含兩個由鉸鏈區處之二硫橋鍵連接的Fab片段之二價片段;Fd片段,其由VH域及CH1域組成;Fv片段,其由抗體單臂之VL域及VH域組成;dAb片段(Ward等人,(1989) Nature 341:544-546),其由VH域組成;及經分離之互補決定區(CDR)。此外,儘管Fv片段之兩個域(VL及VH)經獨立基因編碼,但其可使用重組方法藉由合成連接子接合,該合成連接子能夠將其製造成VL及VH區配對以形成單價分子之單一蛋白鏈(稱為單鏈Fv (scFv);參見例如Bird等人(1988) Science 242:423-426;及Huston等人(1988) Proc. Natl. Acad. Sci. USA 85:5879-5883)。此類單鏈抗體亦涵蓋於術語「抗體片段」內。此等抗體片段係使用熟習此項技術者已知之習知技術獲得,且以與完整抗體相同之方式來篩選供使用的片段。抗體片段亦可併入單域抗體、最大抗體、微型抗體、胞內抗體、雙功能抗體、三功能抗體、四功能抗體、v-NAR及雙-scFv中(參見例如Hollinger及Hudson,(2005) Nature Biotechnology 23:1126-1136)。抗體片段可移植至基於多肽(諸如纖維結合蛋白III型(Fn3))之骨架中(參見美國專利第6,703,199號,其描述纖維結合蛋白多肽單功能抗體)。抗體片段可併入至包含一對串聯Fv片段(VH-CH1-VH-CH1)之單鏈分子中,該等Fv片段連同互補輕鏈多肽形成一對抗原結合位點(Zapata等人,(1995) Protein Eng. 8:1057-1062;及美國專利第5,641,870號)。
「
投與」或「
投藥」包括(但不限於)藉由可注射形式,諸如(例如)靜脈內、肌肉內、皮內或皮下途徑或經黏膜途徑,例如以用於吸入之鼻用噴霧或氣溶膠形式或以可攝取之溶液、膠囊或錠劑形式來遞送藥物。較佳地,藉由可注射形式進行投藥。
術語「
效應功能」係指可歸因於抗體之Fc區的彼等生物活性,其隨抗體同型而變化。抗體效應功能之非限制性實例包括:C1q結合及補體依賴性細胞毒性(CDC);Fc受體結合及抗體依賴性細胞介導之細胞毒性(ADCC)及/或抗體依賴性細胞吞噬作用(ADCP);細胞表面受體(例如B細胞受體)之下調;及B細胞活化。
「
抗體依賴性細胞介導之細胞毒性」或「
ADCC」係指細胞毒性之形式,其中結合於某些細胞毒性細胞(例如NK細胞、嗜中性白血球及巨噬細胞)上呈現之Fc受體(FcR)上之抗體能夠使此等細胞毒性效應細胞特異性地結合於攜帶抗原之目標細胞且接著殺滅具有細胞毒素之目標細胞。用於介導ADCC之初級細胞NK細胞僅表現FcγRIII,而單核球表現FcγRI、FcγRII及FcγRIII。
「
補體依賴性細胞毒性」或「
CDC」係指目標細胞在補體存在下之裂解。藉由補體系統(C1q)之第一組分與本發明之(適當子類之)抗體的結合來引發典型補體路徑之活化,該等抗體結合至其同源抗原。
「
抗體依賴性細胞吞噬作用」或「
ADCP」係指藉由吞噬細胞,諸如巨噬細胞或樹突狀細胞之內化來消除包覆抗體之目標細胞的機制。
術語「
血液癌」包括血源性腫瘤及涉及造血源組織中異常細胞生長及/或增殖之疾病或病症,諸如淋巴瘤、白血病及骨髓瘤。
非霍奇金氏淋巴瘤(「
NHL」)為源自淋巴球之異質惡性疾病。在美國(U.S.),據估計發病率為每年65,000人,其中死亡率為約20,000人(美國癌症協會(American Cancer Society),2006;及SEER Cancer Statistics Review)。該疾病可在所有年齡段中出現,常見發作開始於超過40歲之成年人,其中發病率隨著年齡增長而增加。NHL之特徵在於積聚於淋巴結、血液、骨髓及脾中之淋巴球的純系增殖,但可能涉及任何主要器官。病理學家及臨床醫師使用之當前分類系統為世界衛生組織(WHO)腫瘤分類,其將NHL組織為前驅體及成熟B細胞或T細胞贅瘤。PDQ當前將NHL劃分為惰性的或侵襲性的以用於進入臨床試驗。惰性NHL群組主要包含濾泡性亞型、小淋巴球性淋巴瘤、黏膜相關淋巴組織(MALT)及邊緣區;惰性涵蓋約50%之新診斷的B細胞NHL患者。侵襲性NHL包括組織學診斷患有以下之患者:原發性彌漫性大B細胞(DLBL、「
DLBCL」或DLCL) (所有新診斷患者中40%患有彌漫性大細胞)、伯基特氏及套細胞淋巴瘤(「
MCL」)。NHL之臨床病程係高度可變的。臨床病程之主要決定因素為組織學亞型。大部分惰性類型之NHL被視為不可治癒的疾病。患者最初對化學療法或抗體療法有反應且大部分將復發。迄今為止,研究尚未表明早期干預會提高存活率。在無症狀患者中,可接受「觀察且等待」直至患者變為有症狀的或疾病步調似乎在加速。隨著時間推移,疾病可轉化成更具侵襲性之組織學。中值存活期為8至10年,且惰性患者常常在其疾病治療階段接受3個或更多個治療。有症狀的惰性NHL患者之初始治療在歷史上為組合化學療法。最常用藥劑包括:環磷醯胺、長春新鹼及普賴松(CVP);或環磷醯胺、阿德力黴素、長春新鹼、普賴松(CHOP)。約70%至80%之患者將對其初始化學療法有反應,緩解持續時間持續約2至3年。最終,大部分患者會復發。抗CD20抗體(利妥昔單抗(rituximab))之發現及臨床使用在反應及存活率上提供了顯著改善。對於大部分患者之當前護理標準為利妥昔單抗+CHOP (R-CHOP)或利妥昔單抗+ CVP (R-CVP)。利妥昔單抗療法展示在若干類型之NHL中有效,且當前批准為用於惰性(濾泡性淋巴瘤)及侵襲性NHL (彌漫性大B細胞淋巴瘤)兩者之第一線治療。然而,存在抗CD20單株抗體(mAb)之顯著限制,包括原發性耐藥(在復發性惰性患者中有50%反應)、獲得性耐藥(在再治療之後有50%反應率)、罕見完全反應(在復發性群體中有2%完全反應率)及持續復發模式。最後,許多B細胞並不表現CD20,且因此許多B細胞病症不可使用抗CD20抗體療法進行治療。
除NHL之外,存在若干類型之由B細胞之異常調節引起的白血病。慢性淋巴球性白血病(亦稱為「長期淋巴白血病」或「
CLL」)為由B淋巴球之異常積聚引起之一種成人白血病類型。在CLL中,惡性淋巴球可能看似正常且成熟,但其不能夠有效地應對感染。CLL為成人中最常見形式之白血病。男性患CLL之可能性為女性的兩倍。然而,關鍵風險因素係年齡。在50歲以上之患者中診斷超過75%之新案例。每年診斷出超過10,000例病例且死亡率為每年近5,000人(美國癌症協會,2006;及SEER Cancer Statistics Review)。CLL為不可治癒的疾病,但在大多數情況下進展緩慢。患有CLL之許多人能正常及積極生活多年。由於其發作緩慢,因此早期CLL通常不進行治療,此係由於咸信早期CLL干預不會改善存活時間或生活品質。實際上,隨時間推移來監視病況。初始CLL治療視疾病之確切診斷及進展而變化。存在幾十種用於CLL療法之藥劑。諸如FCR (氟達拉賓(fludarabine)、環磷醯胺及利妥昔單抗)及BR (依魯替尼(Ibrutinib)及利妥昔單抗)之組合化學療法方案在新診斷CLL及復發性CLL兩者中有效。同種異體骨髓(幹細胞)移植由於其風險而很少用作CLL之第一線治療。
另一類型之白血病為小淋巴球性淋巴瘤(「
SLL」),其視為缺少CLL診斷所需之純系淋巴細胞增多,但以其他方式共用病理及免疫表型特徵之CLL變型(Campoet等人,2011)。SLL之定義需要存在淋巴結病及/或脾腫大。此外,B淋巴球在周邊血液中之數目不應超出5 × 109/L。在SLL中,只要有可能應藉由組織病理學評估淋巴結活體組織切片來確認診斷(Hallek等人,2008)。在美國,SLL之發病率佔CLL之約25% (Dores等人,2007)。
另一類型之白血病為急性淋巴母細胞白血病(
ALL),亦已知為急性淋巴球性白血病。ALL之特徵在於骨髓中惡性且不成熟的白血球(亦稱為淋巴母細胞)之過度產生及不斷增殖。『急性』係指循環淋巴球(「母細胞」)之未分化、不成熟狀態,且若保持不治療,則疾病進展迅速且預期壽命為數週至數月。ALL在峰值發病率為4至5歲之兒童中最常見。12至16歲兒童比其他人更容易死於ALL。當前,至少80%之兒童ALL視為可治癒的。每年診斷出不超過4,000例病例且死亡率為每年近1,500人(美國癌症協會,2006;及SEER Cancer Statistics Review)。
如此上下文中所使用之「
個體」或「
患者」係指任何哺乳動物,包括嚙齒動物(諸如小鼠或大鼠)及靈長類(諸如食蟹獼猴(長尾獼猴)、恆河猴(恆河獼猴))或人類(智人)。較佳地,個體或患者為靈長類,最佳為人類患者,甚至更佳為成人患者。
如本文中所使用之術語「
經工程改造」或「
經修飾」包括藉由合成方式(例如,藉由重組技術、活體外肽合成、藉由酶促或化學偶合肽或此等技術之某一組合)來操縱核酸或多肽。較佳地,根據本發明之抗體或抗體片段經工程改造或經修飾以改善一或多個特性,諸如抗原結合、穩定性、半衰期、效應功能、免疫原性、安全性及其類似者。較佳地,根據本發明之抗體或抗體片段經工程改造或經修飾以改善效應功能,諸如ADCC。
「
Fc 區」用於定義免疫球蛋白重鏈之C末端區。免疫球蛋白之Fc區通常包含兩個恆定域:CH2域及CH3域。除非本文中另外指定,否則Fc區中之胺基酸殘基之編號係根據EU編號系統(亦稱為EU索引),如Kabat等人, Sequences of Proteins of Immunological Interest, 第5版,Public Health Service, National Institutes of Health, Bethesda, MD, 1991中所描述。
以治療有效量向患者投與根據本發明投與之抗體。「
治療有效量」係指給足以提供給定疾病或病症之臨床表現之一些改善的量。對特定治療目的有效之量將視疾病或損傷之嚴重性以及個體之重量及總體狀態而定。應理解,判定適當劑量可使用常規實驗藉由建構值之矩陣且測試矩陣中之不同點來達成,其均在經培訓醫師或臨床科學家之一般技能內。
術語「
組合」或「
醫藥組合」係指投與一種療法之外的另一療法。因此,「
與 ... 組合」包括以任何次序同步(例如,同時)且連續投與。各組分可以不同時間點按任何次序同時或依序投與。因此,可分開但在時間上充分接近地投與各組分以便提供所需治療效果。藉助於非限制性實例,可在向患者投與第二療法(例如醫藥劑,諸如
抗 CD47 抗體)之前(例如,1分鐘、15分鐘、30分鐘、45分鐘、1小時、2小時、3小時、4小時、5小時、6小時、7小時、8小時、12小時、24小時、48小時、72小時、96小時、1週、2週、3週、4週、5週、6週、7週、8週、9週、10週、11週或12週)、與其同時或之後(例如,1分鐘、15分鐘、30分鐘、45分鐘、1小時、2小時、3小時、4小時、5小時、6小時、7小時、8小時、12小時、24小時、48小時、72小時、96小時、1週、2週、3週、4週、5週、6週、7週、8週、9週、10週、11週或12週或更長時間)投與第一療法(例如藥劑,諸如抗CD19抗體)。
在一些實施例中,組合投與抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽(例如抗CD47抗體)具有協同效應。本文中互換使用之術語「
協同」、「
協同作用 (synergism)」、「
協同性」及「
協同效應 (synergistic effect)」係指組合地投與化合物之效應,其中該效應大於單獨投與化合物中之每一者之個別效應的總和。
本文中所揭示之醫藥組合之協同效應可藉由不同方法判定。此類方法之實例包括以全文引用之方式併入本文中之Chou等人、Clarke等人及/或Webb等人,See Ting-Chao Chou,Theoretical Basis,Experimental Design,及Computerized Simulation of Synergism and Antagonism in Drug Combination Studies,Pharmacol Rev 58:621-681(2006)之方法。亦參見Clarke等人,Issues in experimental design and endpoint analysis in the study of experimental cytotoxic agents in vivo in breast cancer and other models,Breast Cancer Research and Treatment 46:255-278(1997),其以全文引用之方式併入本文中。亦參見Webb,J.L. (1963),Enzyme and Metabolic Inhibitors,Academic Press,New York,其以全文引用之方式併入本文中。
抗 CD19 抗體
CD19抗體在非特異性B細胞淋巴瘤中之用途論述於WO2007076950 (US2007154473)中,其皆以引用之方式併入。CD19抗體在CLL、NHL及ALL中之用途描述於Scheuermann等人,CD19 Antigen in Leukemia and Lymphoma Diagnosis and Immunotherapy,Leukemia and Lymphoma, 第18卷, 385-397 (1995)中,其以全文引用之方式併入。
對CD19具有特異性之額外抗體描述於WO2005012493 (US7109304)、WO2010053716 (US12/266,999) (Immunomedics);WO2007002223 (US US8097703) (Medarex);WO2008022152 (12/377,251)及WO2008150494 (Xencor)、WO2008031056 (US11/852,106) (Medimmune);WO 2007076950 (US 11/648,505) (Merck Patent GmbH);WO 2009/052431 (US12/253,895) (Seattle Genetics);及WO2010095031 (12/710,442) (Glenmark Pharmaceuticals)、WO2012010562及WO2012010561 (International Drug Development)、WO2011147834 (Roche Glycart)及WO2012156455 (Sanofi)中,該等申請案全部以全文引用之方式併入。
醫藥組合物包括活性劑,例如用於人類中之醫療用途之抗體。醫藥組合物可額外包括醫藥學上可接受之載劑或賦形劑。
向患者投與包含於根據本發明之醫藥組合物中之抗體或抗體片段的劑量可視患者之年齡及身材、症狀、病況、投與途徑及其類似者而變化。劑量通常係根據體重,或體表面積、年齡或每個體來計算。視病況之嚴重程度而定,可調節治療之頻率及持續時間。用於投與包含對CD19具有特異性之抗體或抗體片段之醫藥組合物的有效劑量及排程可憑經驗判定;例如,可藉由週期性評定來監測患者進展,且相應地調節劑量。此外,可使用此項技術中之熟知方法(例如Mordenti等人,1991,Pharmaceut.Res.8:1351)進行劑量之物種間比例調整。
醫藥組合物可包括用於靜脈內、皮下、皮內及肌肉內注射等之劑型。此等可注射製劑可藉由已知方法製備。舉例而言,可注射製劑可(例如)藉由將上文所描述之抗體或其鹽溶解、懸浮或乳化於習知地用於注射之無菌水性介質或油性介質中來製備。包含可用於本發明之上下文中的對CD19具有特異性之抗體或抗體片段的例示性醫藥組合物揭示於例如WO2008/022152或WO2018/002031中。
在某些投與方式(例如靜脈內投藥)中,較佳為視患者之體重而定來投與藥物。在其他投與方式(例如皮下投藥)中,較佳為以平坦固定之劑量來投與藥物。熟習此項技術者知道一種投與方式之何種劑量等效於另一投與方式之另一劑量。推論決策中通常考慮特定藥物之藥力學來以所需形式及以所需有效劑量投與藥物。
以治療有效量向患者投與根據本發明投與之抗體。「治療有效量」係指足以治癒、減輕或部分地遏制給定疾病或病症(亦即NHL)及其併發症之臨床表現的量。在某些實施例中,以9 mg/kg投與本發明之CD19抗體。在替代實施例中,以12 mg/kg投與本發明之CD19抗體。在又其他實施例中,以15 mg/kg或更大劑量投與本發明之CD19抗體。
本發明之抗體可在不同時間點投與,且治療週期可具有不同的長度。可每天、每隔一天、一週三次、每週一次或兩週一次投與抗體。亦可投與抗體歷時至少四週、歷時至少五週、歷時至少六週、歷時至少七週、歷時至少八週、歷時至少九週、歷時至少十週、歷時至少十一週或歷時至少十二週。在本發明之某些實施例中,至少每週一次投與抗體,歷時至少八週。
阻斷 SIRP α -CD47 先天免疫檢查點之多肽
CD47為廣泛表現之具有單個Ig樣域及五個跨膜區(membrane spanning region)之跨膜醣蛋白,該跨膜醣蛋白在經由SIRPoc之NH2端V樣域介導之結合下充當SIRPoc之細胞配位體。SIRPoc主要表現於骨髓細胞上,該等骨髓細胞包括巨噬細胞、粒細胞、骨髓樹突狀細胞(DC)、肥胖細胞及其前驅體,包括造血幹細胞。SIRPoc上介導CD47結合之結構決定子由Lee等人(2007)J.Immunol.179:7741-7750;Hatherley等人(2008)Mol Cell.31(2):266-77;Hatherley等人(2007)J.B.C.282:14567-75論述;且SIRPoc順二聚合於CD47結合中之作用由Lee等人(2010)J.B.C.285:37953-63論述。與CD47抑制正常細胞之吞噬作用之作用保持一致,有跡象表明,CD47僅在造血幹細胞(HSC)及先驅細胞遷移期之前及期間在該等細胞上暫時性上調,且此等細胞上之CD47含量決定該等細胞經活體內吞沒之機率。
阻斷SIRPα-CD47先天免疫檢查點之多肽係指減小CD47與SIRPα之結合之任何多肽。合適的SIRPα-CD47先天免疫檢查點抑制劑之非限制性實例包括抗SIRPα抗體或抗體片段、抗CD47抗體或抗體片段或多肽類SIRPα反應劑。在一些實施例中,合適的SIRPα-CD47先天免疫檢查點抑制劑(例如抗CD47抗體、抗SIRPα抗體等)特異性結合CD47或SIRPα以減少CD47與SIRPα之結合。在一些實施例中,合適的SIRPα-CD47先天免疫檢查點抑制劑(例如抗SIRPα抗體、可溶性CD47多肽等)特異性結合SIRPα以減少CD47與SIRPα之結合。結合SIRPα之合適的SIRPα-CD47先天免疫檢查點抑制劑不活化SIRPα(例如在表現SIRPα之吞噬細胞中)。合適的SIRPα-CD47先天免疫檢查點抑制劑之功效可藉由分析例示性分析中之藥劑來評估,其中在候選藥劑之存在或缺乏下培育目標細胞。相較於在缺乏藥劑之情況下之吞噬作用,用於本發明之方法的SIRPα-CD47先天免疫檢查點抑制劑(例如抗CD47抗體、抗SIRPα抗體、多肽類SIRPα反應劑等)將上調吞噬作用至少10% (例如至少20%、至少30%、至少40%、至少50%、至少60%、至少70%、至少80%、至少90%、至少100%、至少120%、至少140%、至少160%、至少180%或至少200%)類似地,用於SIRPα之酪胺酸磷酸化水準之活體外分析將展示磷酸化相較於在不存在候選藥劑下觀測到之磷酸化會降低至少5%(例如至少10%、至少15%、至少20%、至少30%、至少40%、至少50%、至少60%、至少70%、至少80%、至少90%或100%)。
在一些實施例中,抗CD47藥劑在結合時不活化CD47。
一些病原體(例如,痘病毒、黏液瘤病毒、鹿痘病毒(Deerpox virus)、豬痘病毒、山羊痘病毒(goatpox virus)、綿羊痘病毒等)表現充當致使感染之毒力因子的CD47類似物(亦即,CD47模擬物) (例如,M128L蛋白質) (Cameron等人,Virology.2005年6月20日;337(1):55-67),且一些病原體誘導宿主細胞中之內源性CD47的表現。因此,感染表現CD47類似物之病原體之細胞可排他性地或與內源性CD47組合表現病原體提供之CD47類似物。在經感染細胞中,在增加或不增加內源性CD47含量之情況下,此機制允許病原體增加CD47表現(經由CD47類似物表現)。在一些實施例中,多肽類SIRPα-CD47先天免疫檢查點抑制劑(例如抗CD47抗體、SIRPα反應劑、SIRPα抗體、可溶性CD47多肽等)可減少CD47類似物(亦即,CD47模擬物)與SIRPα之結合。在一些情況下,多肽類SIRPα-CD47先天免疫檢查點抑制劑(例如,SIRPα反應劑、抗CD47抗體等)可結合CD47類似物(亦即,CD47模擬物)以減少CD47類似物與SIRPα之結合。在一些情況下,合適的SIRPα-CD47先天免疫檢查點抑制劑(例如抗SIRPα抗體、可溶性CD47多肽等)可結合SIRPα。結合SIRPα之合適的SIRPα-CD47先天免疫檢查點抑制劑不活化SIRPα(例如在表現SIRPα之吞噬細胞中)。當病原體為提供CD47類似物之病原體時,抗CD47藥劑可用於本文所提供之任一方法中。換言之,如本文所使用之術語「CD47」涵蓋CD47以及多肽類CD47類似物(亦即,CD47模擬物)。
在一些實施例中,個體SIRPα-CD47先天免疫檢查點抑制劑為特異性結合SIRPα之抗體(亦即,抗SIRPα抗體)且減少一種細胞上之CD47與另一種細胞上之SIRPα之間的相互作用。合適的抗SIRPα抗體可在不活化或刺激經由SIRPα進行之信號傳導之情況下結合SIRPα,此係由於SIRPα活化將抑制吞噬作用。實際上,合適的抗SIRPα抗體會促進受損細胞先於正常細胞之優先吞噬作用。相對於其他細胞表現更高含量之CD47之彼等細胞將優先被吞噬。因此,合適的抗SIRPα抗體特異性結合SIRPα (在不充分活化/刺激用以抑制吞噬作用之信號傳導反應之情況下)且阻斷SIRPα與CD47之間的相互作用。合適的抗SIRPα抗體包括此類抗體之完全人類、人類化或嵌合型式。人類化抗體由於其低抗原性而尤其適用於人類之活體內應用。以類似方式犬類化、貓類化等抗體尤其各別地適用於狗、貓及其他物種中之應用。所關注之抗體包括人類化抗體或犬類化、貓類化、馬類化、牛類化、豬類化等抗體及其變異體。
在一些實施例中,阻斷SIRPα-CD47先天免疫檢查點之個體多肽為多肽類SIRPα反應劑。在一些實施例中,多肽類SIRPα反應劑減少一種細胞上之CD47與另一種細胞上之SIRPα之間的相互作用。如本文所使用之「多肽類SIRPα反應劑」包含通常處於信號序列與跨膜域之間的足夠以可辨識親和力結合CD47之SIRPα部分或其保持結合活性之片段。合適的SIRPα劑減少(例如,阻斷、阻止等)天然蛋白質SIRPα與CD47之間的相互作用。SIRPα反應劑將通常包含SIRPα之至少一個域。在一些實施例中,SIRPα反應劑為例如與第二多肽同框融合之融合蛋白。在一些實施例中,第二多肽能夠增大融合蛋白之尺寸,例如使得融合蛋白將不會迅速地自循環中清除。在一些實施例中,第二多肽為免疫球蛋白Fc區之部分或整體。Fc區藉由提供「吃我」信號來輔助吞噬作用,其會增強對由高親和力SIRPα反應劑提供之「不吃我」信號之阻斷。在其他實施例中,第二多肽為與Fc實質上類似,例如提供增大之尺寸、多聚合域及/或與Ig分子之額外結合或相互作用的任何合適的多肽。在一些實施例中,阻斷SIRPα-CD47先天免疫檢查點之多肽為SIRPαFc融合蛋白。
如本文所使用,「抗CD47抗體」係指減少CD47與CD47配位體(諸如SIRPα)之結合的任何抗體或抗體片段。在一些實施例中,合適的抗CD47抗體在結合時不活化CD47。合適抗體之非限制性實例包括例如純系B6H12、5F9、8B6及C3 (例如如國際專利公開案WO 2011/143624中所描述,該案以引用之方式特定地併入本文中)。合適抗CD47抗體包括抗體之完全人類、人類化或嵌合型式。人類化抗體由於其低抗原性而尤其適用於人類之活體內應用。以類似方式犬類化、貓類化等抗體尤其各別地適用於狗、貓及其他物種中之應用。所關注之抗體包括人類化抗體或犬類化、貓類化、馬類化、牛類化、豬類化等抗體及其變異體。
抗CD47抗體可與醫藥學上可接受之賦形劑一起調配在醫藥組合物中。抗CD47抗體可靜脈內投與。
在一些態樣中,抗CD47抗體與B6H12、5F9、8B6或C3競爭結合至CD47。在一些態樣中,抗CD47結合至與B6H12、5F9、8B6或C3相同之CD47抗原決定基。在一些態樣中,抗CD47抗體與B6H12競爭結合至CD47。在一些態樣中,抗CD47抗體結合至與B6H12相同之CD47抗原決定基。
表2含有B6H12抗體重鏈及輕鏈之序列且指示B6H12抗體之CDR。
在一些態樣中,抗CD47抗體結合至與B6H12相同之CD47抗原決定基,其中該B6H12抗體或其抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列GYGMS (SEQ ID NO: 14)之HCDR1區、包含序列TITSGGTYTYYPDSVKG (SEQ ID NO: 15)之HCDR2區,及包含序列SLAGNAMDY (SEQ ID NO: 16)之HCDR3區;該輕鏈可變區包含:包含序列RASQTISD (SEQ ID NO: 17)之LCDR1區、包含序列FASQSIS (SEQ ID NO: 18)之LCDR2區,及包含序列QNGHGFPRT (SEQ ID NO: 19)之LCDR3區。在一個態樣中,該B6H12抗體或其抗體片段包含以下重鏈可變區:
及以下輕鏈可變區:
在一些態樣中,抗CD47抗體與B6H12競爭結合至CD47,其中該B6H12抗體或其抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列GYGMS (SEQ ID NO: 14)之HCDR1區、包含序列TITSGGTYTYYPDSVKG (SEQ ID NO: 15)之HCDR2區,及包含序列SLAGNAMDY (SEQ ID NO: 16)之HCDR3區;該輕鏈可變區包含:包含序列RASQTISD (SEQ ID NO: 17)之LCDR1區、包含序列FASQSIS (SEQ ID NO: 18)之LCDR2區,及包含序列QNGHGFPRT (SEQ ID NO: 19)之LCDR3區。在一個態樣中,該B6H12抗體或其抗體片段包含以下重鏈可變區:
及以下輕鏈可變區:
在一些態樣中,抗CD47抗體與5F9競爭結合CD47。在一些態樣中,抗CD47抗體結合至與5F9相同之CD47抗原決定基。在一些態樣中,抗CD47抗體包含IgG4 Fc。在一些態樣中,抗CD47抗體包含5F9或由5F9組成。
在一些實施例中,本文所描述之方法包括投與抗CD47抗體5F9。在一些實施例中,本文所描述之方法包括投與具有與5F9之序列至少97%、至少98%、至少99%或100%一致之序列(輕鏈、重鏈及/或CDR)之抗CD47抗體。表3含有5F9抗體及其變異體之序列。
在一些態樣中,抗CD47抗體結合至與包含以下重鏈可變區及輕鏈可變區之抗體或抗體片段相同之CD47抗原決定基,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。在一個態樣中,該抗體或其片段包含選自由以下組成之群的重鏈可變區:SEQ ID NO: 28、SEQ ID NO: 30及SEQ ID NO: 32,及選自由以下組成之群的輕鏈可變區:SEQ ID NO: 29、SEQ ID NO: 31及SEQ ID NO: 33。在一個態樣中,該抗CD47抗體或其片段包含SEQ ID NO: 30之重鏈可變區及SEQ ID NO: 31之輕鏈可變區。在另一態樣中,該抗CD47抗體或其片段包含SEQ ID NO: 34之完整重鏈及SEQ ID NO: 35之完整輕鏈。
在一些態樣中,抗CD47抗體與包含以下重鏈可變區及輕鏈可變區之抗體或其抗體片段競爭結合至CD47,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。在一個態樣中,該抗體或其片段包含選自由以下組成之群的重鏈可變區:SEQ ID NO: 28、SEQ ID NO: 30及SEQ ID NO: 32,及選自由以下組成之群的輕鏈可變區:SEQ ID NO: 29、SEQ ID NO: 31及SEQ ID NO: 33。
在一些態樣中,抗CD47抗體或其片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。在一個態樣中,該抗CD47抗體或其片段包含選自由以下組成之群的重鏈可變區:SEQ ID NO: 28、SEQ ID NO: 30及SEQ ID NO: 32,及選自由以下組成之群的輕鏈可變區:SEQ ID NO: 29、SEQ ID NO: 31及SEQ ID NO: 33。在一個態樣中,抗CD47抗體或其片段包含SEQ ID NO: 30之重鏈可變區及SEQ ID NO: 31之輕鏈可變區。在另一態樣中,該抗CD47抗體或其片段包含SEQ ID NO: 34之完整重鏈及SEQ ID NO: 35之完整輕鏈。
在一些態樣中,抗CD47抗體或其片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:序列NYNMH (SEQ ID NO: 22)之HCDR1區、序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。
在一些實施例中,合適的抗CD47抗體在結合時不活化CD47。合適的抗體之非限制性實例包括純系B6H12、5F9、8B6及C3 (例如如國際專利公開案WO 2011/143624中所描述,該案以引用之方式特定地併入本文中)。
在一些實施例中,抗CD47抗體包含例如IgG1、IgG2a、IgG2b、IgG3、IgG4恆定區之人類IgG Fc區。在一個實施例中,IgG Fc區為IgG4恆定區。IgG4鉸鏈可藉由胺基酸取代S241P加以穩定(參見Angal等人(1993) Mol. Immunol. 30(1):105-108,該文獻以引用之方式特定地併入本文中)。
治療方法
本文揭示一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 向該個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及
(b) 向該個體投與抗CD19抗體。
本文揭示一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 以每公斤體重大於或等於2 mg抗體之劑量向該個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及
(b) 向該個體投與抗CD19抗體。
在一實施例中,本發明提供一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 向該個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及
(b) 向該個體投與抗CD19抗體,其中該癌症為血液癌。在一些態樣中,血液為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在一些其他態樣中,NHL係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。
在一些態樣中,癌症為CD19+癌症。在一些態樣中,CD19+癌症為血液癌。在一些態樣中,血液癌為非霍奇金氏淋巴瘤(NHL)。在一些態樣中,NHL為惰性淋巴瘤。在一些態樣中,惰性淋巴瘤為濾泡性淋巴瘤(FL)。在一些態樣中,惰性淋巴瘤為邊緣區淋巴瘤。在一些態樣中,NHL為彌漫性大B細胞淋巴瘤(DLBCL)。在一些態樣中,CD19+癌症為DLBCL、濾泡性淋巴瘤、邊緣區淋巴瘤、套細胞淋巴瘤、慢性淋巴球性白血病/較小淋巴球性白血病、瓦爾登斯特倫巨球蛋白血症(Waldenstrom's macroglobulinemia)/淋巴漿細胞淋巴瘤、原發性縱隔B細胞淋巴瘤、伯基特氏淋巴瘤、未分類之B細胞淋巴瘤、B細胞急性淋巴母細胞白血病或移植後淋巴增殖疾病(PTLD),視情況其中CD19+癌症係基於病理組織學、流式細胞測量術、分子分類、一或多個等效分析或其組合而分類。在一些態樣中,CD19+癌症為雙重命中淋巴瘤。在一些態樣中,CD19+癌症為myc重排淋巴瘤。
在一些態樣中,個體對於至少1、2、3、4、5、6、7、8、9、10或大於10種先前癌症療法線為復發或難治的。在一些態樣中,個體難以用利妥昔單抗治療。在一些態樣中,利妥昔單抗難治性情況無法對任何先前含利妥昔單抗之方案有反應,或在任何先前含利妥昔單抗之方案期間有進展,或在最後一次利妥昔單抗劑量之6個月內有進展。
在一實施例中,本發明提供一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 向該個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及
(b) 向該個體投與抗CD19抗體,
其中該抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽以單獨方式投與。在另一態樣中,該抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽以同步方式投與。
在另一實施例中,本發明提供一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 向該個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及
(b) 向該個體投與抗CD19抗體,
其中該抗CD19抗體或其抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列SYVMH (SEQ ID NO: 1)之HCDR1區、包含序列NPYNDG (SEQ ID NO: 2)之HCDR2區,及包含序列GTYYYGTRVFDY (SEQ ID NO: 3)之HCDR3區;該輕鏈可變區包含:包含序列RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、包含序列RMSNLNS (SEQ ID NO: 5)之LCDR2區,包含序列MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。在一個態樣中,該抗CD19抗體或其抗體片段包含以下重鏈可變區:
及以下輕鏈可變區:
在另一態樣中,該抗CD19抗體包含以下重鏈:EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK (SEQ ID NO: 11)。在另一態樣中,該抗CD19抗體或其抗體片段進一步包含以下輕鏈:
在另一實施例中,本發明提供一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 向該個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及
(b) 向該個體投與抗CD19抗體,其中阻斷SIRPα-CD47先天免疫檢查點之該多肽為與人類CD47或人類SIRPα特異性結合之抗體或抗體片段。在另一態樣中,阻斷SIRPα-CD47先天免疫檢查點之多肽為多肽類SIRPα反應劑。在另一態樣中,阻斷SIRPα-CD47先天免疫檢查點之多肽為SIRPαFc融合蛋白。
在另一實施例中,本發明提供一種治療患有癌症(例如識別為CD19+之癌症)之人類個體或減小人類個體中癌症之大小的方法,其包含:
(a) 向該個體投與抗CD47抗體;及
(b) 向該個體投與抗CD19抗體。
在一些態樣中,抗CD47抗體與B6H12、5F9、8B6或C3競爭結合至CD47。在一些態樣中,抗CD47結合至與B6H12、5F9、8B6或C3相同之CD47抗原決定基。在一些態樣中,抗CD47抗體與B6H12競爭結合至CD47。在一些態樣中,抗CD47抗體結合至與B6H12相同之CD47抗原決定基。
表2含有B6H12抗體重鏈及輕鏈之序列且指示B6H12抗體之CDR。
在一些態樣中,抗CD47抗體結合至與B6H12相同之CD47抗原決定基,其中該B6H12抗體或其抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列GYGMS (SEQ ID NO: 14)之HCDR1區、包含序列TITSGGTYTYYPDSVKG (SEQ ID NO: 15)之HCDR2區,及包含序列SLAGNAMDY (SEQ ID NO: 16)之HCDR3區;該輕鏈可變區包含:包含序列RASQTISD (SEQ ID NO: 17)之LCDR1區、包含序列FASQSIS (SEQ ID NO: 18)之LCDR2區,及包含序列QNGHGFPRT (SEQ ID NO: 19)之LCDR3區。在一個態樣中,該B6H12抗體或其抗體片段包含以下重鏈可變區:
及以下輕鏈可變區:
在一些態樣中,抗CD47抗體與B6H12競爭結合至CD47,其中該B6H12抗體或其抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列GYGMS (SEQ ID NO: 14)之HCDR1區、包含序列TITSGGTYTYYPDSVKG (SEQ ID NO: 15)之HCDR2區,及包含序列SLAGNAMDY (SEQ ID NO: 16)之HCDR3區;該輕鏈可變區包含:包含序列RASQTISD (SEQ ID NO: 17)之LCDR1區、包含序列FASQSIS (SEQ ID NO: 18)之LCDR2區,及包含序列QNGHGFPRT (SEQ ID NO: 19)之LCDR3區。在一個態樣中,該B6H12抗體或其抗體片段包含以下重鏈可變區:
及以下輕鏈可變區:
在一些態樣中,抗CD47抗體與5F9競爭結合CD47。在一些態樣中,抗CD47抗體結合至與5F9相同之CD47抗原決定基。在一些態樣中,抗CD47抗體包含IgG4 Fc。在一些態樣中,抗CD47抗體包含5F9或由5F9組成。
在一些實施例中,本文所描述之方法包括投與抗CD47抗體5F9。在一些實施例中,本文所描述之方法包括投與具有與5F9之序列至少97%、至少98%、至少99%或100%一致之序列(輕鏈、重鏈及/或CDR)之抗CD47抗體。表3含有5F9抗體及其變異體之序列。
在一些態樣中,抗CD47抗體結合至與包含以下重鏈可變區及輕鏈可變區之抗體或抗體片段相同之CD47抗原決定基,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。在一個態樣中,該抗體或其片段包含選自由以下組成之群的重鏈可變區:SEQ ID NO: 28、SEQ ID NO: 30及SEQ ID NO: 32,及選自由以下組成之群的輕鏈可變區:SEQ ID NO: 29、SEQ ID NO: 31及SEQ ID NO: 33。
在一些態樣中,抗CD47抗體與包含以下重鏈可變區及輕鏈可變區之抗體或其抗體片段競爭結合至CD47,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。在一個態樣中,該抗體或其片段包含選自由以下組成之群的重鏈可變區:SEQ ID NO: 28、SEQ ID NO: 30及SEQ ID NO: 32,及選自由以下組成之群的輕鏈可變區:SEQ ID NO: 29、SEQ ID NO: 31及SEQ ID NO: 33。
在一些態樣中,抗CD47抗體或其片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。在一個態樣中,該抗CD47抗體或其片段包含選自由以下組成之群的重鏈可變區:SEQ ID NO: 28、SEQ ID NO: 30及SEQ ID NO: 32,及選自由以下組成之群的輕鏈可變區:SEQ ID NO: 29、SEQ ID NO: 31及SEQ ID NO: 33。
在一個態樣中,抗CD47抗體或其片段包含SEQ ID NO: 30之重鏈可變區及SEQ ID NO: 31之輕鏈可變區。在另一態樣中,該抗CD47抗體或其片段包含SEQ ID NO: 34之完整重鏈及SEQ ID NO: 35之完整輕鏈。
在一些態樣中,抗CD47抗體或其片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:序列NYNMH (SEQ ID NO: 22)之HCDR1區、序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。
在一些實施例中,合適的抗CD47抗體在結合時不活化CD47。合適的抗體之非限制性實例包括純系B6H12、5F9、8B6及C3 (例如如國際專利公開案WO 2011/143624中所描述,該案以引用之方式特定地併入本文中)。
在一些實施例中,抗CD47抗體包含例如IgG1、IgG2a、IgG2b、IgG3、IgG4恆定區之人類IgG Fc區。在一個實施例中,IgG Fc區為IgG4恆定區。IgG4鉸鏈可藉由胺基酸取代S241P加以穩定(參見Angal等人(1993) Mol. Immunol. 30(1):105-108,該文獻以引用之方式特定地併入本文中)。
提供用治療有效劑量之對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽治療個體的方法。
治療有效劑量之合適投與可能需要投與單次劑量,或可能需要每天一次、半週一次、每週一次、每兩週一次、一個月一次、每年等投與劑量。在一些情況下,治療有效劑量係作為兩次或更多次劑量之遞增濃度(即,增加劑量)來投與,其中(i)所有劑量皆為治療劑量,或其中(ii)亞治療劑量(或兩次或更多次亞治療劑量)係最初給予且治療劑量係藉由該遞增來達成。
初始劑量之對CD19具有特異性之抗體或抗體片段或阻斷SIRPα-CD47先天免疫檢查點之多肽可在輸注之後立即引起血球凝集一段時間。在不受理論束縛之情況下,咸信初始劑量之多價CD47結合劑可能會導致結合至藥劑之RBC的交聯。在本發明之某些實施例中,以初始劑量,及視情況以後續劑量歷經一段時間及/或以降低存在高局部濃度之RBC及藥劑之血液微環境可能性的濃度向患者輸注阻斷SIRPα-CD47先天免疫檢查點之多肽。
在一些實施例中,初始劑量之CD47結合劑輸注至少約2小時、至少約2.5小時、至少約3小時、至少約3.5小時、至少約4小時、至少約4.5小時、至少約5小時、至少約6小時或更長時間之時段。在一些實施例中,初始劑量輸注約2.5小時至約6小時,例如約3小時至約4小時之時段。在一些此類實施例中,輸液中之藥劑劑量為約0.05 mg/ml至約0.5 mg/ml,例如約0.1 mg/ml至約0.25 mg/ml。
劑量及頻率可視患者中之抗CD47抗體及/或額外藥劑(例如抗CD19抗體)之半衰期而變化。熟習此項技術者應理解,此類規範將針對例如在抗體片段之使用中、在抗體結合物之使用中、在SIRPα反應劑之使用中、在可溶性CD47肽之使用中等之活性劑分子量加以調整。用於例如鼻內、吸入等之局部投藥或用於例如i.m.、i.p.、i.v.、s.c.及其類似方式之全身性投藥之劑量亦可變化。
在本發明之某些實施例中,以初始劑量,及視情況以後續劑量歷經一段時間及/或以降低存在高局部濃度之RBC及藥劑之血液微環境可能性的濃度向患者輸注抗CD47抗體。在本發明之一些實施例中,初始劑量之抗CD47抗體輸注至少約2小時、至少約2.5小時、至少約3小時、至少約3.5小時、至少約4小時、至少約4.5小時、至少約5小時、至少約6小時或更長時間之時段。在一些實施例中,初始劑量輸注約2.5小時至約6小時,例如約3小時至約4小時之時段。在一些此類實施例中,輸液中之藥劑劑量為約0.05 mg/ml至約0.5 mg/ml,例如約0.1 mg/ml至約0.25 mg/ml。
投藥方法
阻斷SIRPα-CD47先天免疫檢查點之一或多種多肽及對CD19具有特異性之抗體或抗體片段可按任何次序或同時向個體投與。若同時,則阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段可以單一的均一形式(諸如靜脈內或皮下注射),或以多個形式(例如以多個靜脈內或皮下輸注(皮下注射))提供。阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段可一起或單獨包裝在單一封裝或多個封裝中。阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段中之一者或所有者可以多次劑量提供。若並非同時,則多次劑量之間的時序可能改變至多達約一週、一個月、兩個月、三個月、四個月、五個月、六個月或約一年。本發明之阻斷SIRPα-CD47先天免疫檢查點之多肽及/或對CD19具有特異性之抗體或抗體片段,及包含彼等之醫藥組合物可封裝作為套組。套組可包括使用阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段之說明書(例如書面說明書)及包含其之組合物。
在一些情況下,治療癌症之方法包含向個體投與治療有效量之阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段,其中該投藥會治療癌症。在一些實施例中,投與治療有效量之阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段至少約10秒、30秒、1分鐘、10分鐘、30分鐘、1小時、2小時、3小時、4小時、5小時、8小時、12小時、24小時、2天、3天、4天、5天、6天、1週、2週、3週、1個月、2個月、3個月、4個月、5個月、6個月或1年。
本文所描述之方法包括投與治療有效劑量之組合物,亦即治療有效劑量之阻斷SIRPα-CD47先天免疫檢查點之多肽及對CD19具有特異性之抗體或抗體片段。如上文所描述,以足以實質上消除靶向細胞之量向患者投與組合物。可依據如患者所需要且耐受之劑量及頻率投與組合物之單次或多次投與。用於治療之特定劑量應視醫學病況及哺乳動物病史以及諸如年齡、體重、性別、投與途徑、效率等之其他因素而定。
實施例
本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
在一個態樣中,本發明提供一種用於治療癌症的醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中該癌症為血液癌。在一個實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在另一實施例中,血液癌為非霍奇金氏淋巴瘤(NHL)。在另一實施例中,非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。
在某些實施例中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中對CD19具有特異性之該抗體或抗體片段係以9 mg/kg投與。在替代性實施例中,對CD19具有特異性之抗體或抗體片段係以12 mg/kg投與。在又其他實施例中,對CD19具有特異性之該抗體或抗體片段係以15 mg/kg或更多劑量投與。
在實施例中,對CD19具有特異性之抗體或抗體片段具有細胞毒活性。在實施例中,對CD19具有特異性之抗體或抗體片段包含具有ADCC誘導活性之恆定區。在實施例中,對CD19具有特異性之抗體誘導ADCC。
在某些實施例中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中該組合之組分、對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽係單獨投與。在一實施例中,阻斷SIRPα-CD47先天免疫檢查點之多肽係在投與對CD19具有特異性之抗體或抗體片段之前投與。在一實施例中,對CD19具有特異性之抗體或抗體片段係在投與阻斷SIRPα-CD47先天免疫檢查點之多肽之前投與。在實施例中,組合之組分在兩種組分(藥物)於患者體內同時具有活性的時間投與。在實施例中,組合的組分係一起、同時、分開或隨後物理性或及時性投與。在實施例中,組合之組分係同時投與。
在某些實施例中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中抗CD19抗體係每週一次、每兩週一次或每月一次投與。
在某些實施例中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中對CD19具有特異性之該抗體或抗體片段係以12mg/kg之濃度投與。
在某些實施例中,本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽,其中在第1天第一投與之後每週一次、每兩週一次、或每月一次投與對CD19具有特異性之該抗體或抗體片段,且其中在第8天第一次投與阻斷SIRPα-CD47先天免疫檢查點之多肽。在另一實施例中,在第1天第一次投藥之後的抗CD19抗體或其抗體片段在前3個月每週一次且至少在隨後3個月每兩週一次投與。
在一個態樣中,本發明提供一種用於治療血液癌患者之抗CD19抗體或其抗體片段,其中該血液癌患者患有非霍奇金氏淋巴瘤,且其中該抗CD19抗體或其抗體片段與阻斷SIRPα-CD47先天免疫檢查點之多肽組合投與。
在一個態樣中,本發明提供一種用於治療血液癌患者之抗CD19抗體或其抗體片段,其中該血液癌患者患有非霍奇金氏淋巴瘤,且其中該抗CD19抗體或其抗體片段與阻斷SIRPα-CD47先天免疫檢查點之多肽組合投與。在一個實施例中,血液癌患者患有非霍奇金氏淋巴瘤,其中該非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。
在一實施例中,與阻斷SIRPα-CD47先天免疫檢查點之多肽組合用於治療血液癌患者之抗CD19抗體或其抗體片段包含:包含序列SYVMH (SEQ ID NO: 1)之HCDR1區、包含序列NPYNDG (SEQ ID NO: 2)之HCDR2區、包含序列GTYYYGTRVFD Y(SEQ ID NO: 3)之HCDR3區、包含序列RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、包含序列RMSNLNS (SEQ ID NO: 5)之LCDR2區,及包含序列MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。
在本發明之另一實施例中,抗CD19抗體或其抗體片段為人類、人類化或嵌合抗體或抗體片段。在本發明之另一實施例中,抗CD19抗體或其抗體片段屬於IgG同型。在另一實施例中,抗體或抗體片段為IgG1、IgG2或IgG1/IgG2嵌合。在本發明之另一實施例中,抗CD19抗體之同型經工程改造以增強抗體依賴性細胞介導之細胞毒性。在另一實施例中,抗CD19抗體之重鏈恆定區包含胺基酸239D及332E,其中Fc編號係根據如同Kabat之EU索引。在另一實施例中,抗體為IgG1、IgG2或IgG1/IgG2且抗CD19抗體之嵌合重鏈恆定區包含胺基酸239D及332E,其中Fc編號係根據如同Kabat之EU索引。
在一實施例中,與阻斷SIRPα-CD47先天免疫檢查點之多肽組合用於治療血液癌患者之抗CD19抗體或其抗體片段包含以下序列之可變重鏈:
及以下序列之可變輕鏈:
或與SEQ ID NO: 7之可變重鏈及SEQ ID NO: 8之可變輕鏈具有至少80%、至少90%、至少95%、至少96%、至少97%、至少98%或至少99%一致的可變重鏈及可變輕鏈。
在一實施例中,與阻斷SIRPα-CD47先天免疫檢查點之多肽組合用於治療血液癌患者之抗CD19抗體或其抗體片段包含以下序列之可變重鏈:
及以下序列之可變輕鏈:
或與SEQ ID NO: 7之可變重鏈及SEQ ID NO: 8之可變輕鏈具有至少80%、至少90%、至少95%、至少96%、至少97%、至少98%或至少99%一致的可變重鏈及可變輕鏈,其中抗CD19抗體包含:包含序列SYVMH (SEQ ID NO: 1)之HCDR1區、包含序列NPYNDG (SEQ ID NO: 2)之HCDR2區、包含序列GTYYYGTRVFDY (SEQ ID NO: 3)之HCDR3區、包含序列RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、包含序列RMSNLNS (SEQ ID NO: 5)之LCDR2區及包含序列MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。在另一實施例中,抗CD19抗體之重鏈區包含胺基酸239D及332E,其中Fc編號係根據如同Kabat之EU索引。
在另一實施例中,與阻斷SIRPα-CD47先天免疫檢查點之多肽組合用於治療血液癌患者之抗CD19抗體或其抗體片段包含具有以下序列之重鏈:
及具有以下序列之輕鏈:
或與SEQ ID NO: 7之重鏈及SEQ ID NO: 8之輕鏈具有至少80%、至少90%、至少95%、至少96%、至少97%、至少98%或至少99%一致的重鏈及輕鏈。
在另一實施例中,與阻斷SIRPα-CD47先天免疫檢查點之多肽組合用於治療血液癌患者之抗CD19抗體或其抗體片段包含具有以下序列之重鏈:
及具有以下序列之輕鏈:
或與SEQ ID NO: 7之重鏈及SEQ ID NO: 8之輕鏈具有至少80%、至少90%、至少95%、至少96%、至少97%、至少98%或至少99%一致的重鏈及輕鏈,且其中抗CD19抗體包含:包含序列SYVMH (SEQ ID NO: 1)之HCDR1區、包含序列NPYNDG (SEQ ID NO: 2)之HCDR2區、包含序列GTYYYGTRVFDY (SEQ ID NO: 3)之HCDR3區、包含序列RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、包含序列RMSNLNS (SEQ ID NO: 5)之LCDR2區及包含序列MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。在另一實施例中,抗CD19抗體之重鏈區包含胺基酸239D及332E,其中Fc編號係根據如同Kabat之EU索引。
在一個實施例中,本發明提供一種抗CD19抗體或其抗體片段,其中該抗CD19抗體或其抗體片段係以12 mg/kg之濃度投與。
在另一實施例中,抗CD19抗體或其抗體片段係每週一次、每兩週一次或每月一次投與。在另一實施例中,在前3個月每週一次且至少在隨後3個月每兩週一次投與抗CD19抗體或其抗體片段。在另一實施例中,在前3個月每週一次投與抗CD19抗體或其抗體片段。在另一實施例中,在前3個月每週一次且至少在隨後3個月每兩週一次投與抗CD19抗體或其抗體片段。在另一實施例中,在前3個月每週一次,在隨後3個月每兩週一次且之後每月一次投與抗CD19抗體或其抗體片段。在又一實施例中,在前3個月每週一次,在隨後3個月每兩週一次且之後每月一次投與抗CD19抗體或其抗體片段。
本發明提供一種用於治療癌症之對CD19具有特異性之抗體或抗體片段,其中對CD19具有特異性之該抗體或抗體片段與阻斷SIRPα-CD47先天免疫檢查點之多肽組合投與。
本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
阻斷SIRPα-CD47先天免疫檢查點之多肽(例如抗CD47抗體或抗體片段)之治療有效劑量可視所使用特定藥劑而定,但通常為約2 mg/kg體重或更多、約4 mg/kg體重或更多、約6 mg/kg體重或更多、約8 mg/kg體重或更多、約10 mg/kg體重或更多、約12 mg/kg體重或更多、約14 mg/kg體重或更多、約16 mg/kg體重或更多、約18 mg/kg體重或更多、約20 mg/kg體重或更多、約25 mg/kg或更多、約30 mg/kg或更多、約35 mg/kg或更多、約40 mg/kg或更多、約45 mg/kg或更多、約50 mg/kg或更多、或約55 mg/kg或更多、或約60 mg/kg或更多、或約65 mg/kg或更多、或約70 mg/kg或更多。
在一些實施例中,阻斷SIRPα-CD47先天免疫檢查點之多肽之治療有效劑量為2、4、5、6、7、8、9、10、11、12、13、14、15、16、17、18、19、20、30、45、60、或70 mg/kg。在一些實施例中,阻斷SIRPα-CD47先天免疫檢查點之多肽之治療有效劑量為20至60 mg/kg。
達成及/或維持所投與組合物之特定血清含量所需之劑量與各劑量之間的時間量成比例且與所投與劑量的次數成反比。因此,當給藥頻率增加時,所需劑量減少。一般熟習此項技術者應易於理解且實踐給藥策略最佳化。例示性治療方案需要每兩週一次或一月一次或每3至6個月一次投與。通常在多個時刻投與本發明之治療性實體。
單次劑量之間的間隔可為每週、每月或每年。如藉由量測患者中治療性實體之血液含量所指示,間隔亦可為不規律的。替代地,本發明之治療性實體可作為持續釋放型調配物形式投與,在該情況下使用頻率較低之投藥。劑量及頻率係視患者中多肽之半衰期而變化。
「維持劑量」為意欲為治療有效劑量之劑量。舉例而言,在用於判定治療有效劑量之實驗中,可向不同個體投與多個不同維持劑量。因此,維持劑量中之一些可為治療有效劑量且其他可為亞治療劑量。
在另其他實施例中,本發明之方法包括治療、減輕或預防包括癌瘤、血液癌、黑色素瘤、肉瘤、神經膠質瘤等之癌症之腫瘤生長、腫瘤轉移或腫瘤入侵。對於預防性應用,以足以消除或降低疾病風險、減輕疾病嚴重程度或延遲疾病發作之量向易患疾病或另外處於疾病風險下之患者投與醫藥組合物或藥劑,該疾病包括疾病之生物化學、組織學及/或行為症狀、其在疾病發展期間呈現之併發症及中度病理性表現型。
本文所描述之組合藥劑之毒性可藉由在細胞培養物或實驗動物中之標準醫藥程序,例如藉由判定LD50
(致死50%群體之劑量)或LD100
(致死100%群體之劑量)來判定。毒性與治療作用之間的劑量比為治療指數。自此等細胞培養物分析法及動物研究獲得之資料可用於調配在人類中使用無毒之劑量範圍。本文所描述之蛋白質之劑量較佳處於包括具有極少或不具有毒性之有效劑量之循環濃度的範圍內。劑量可視所用劑型及所用投與途徑而在此範圍內變化。確切調配物、投與途徑及劑量可由個別醫師考慮患者病況來選擇。
用於治療癌症之本發明之組合藥劑之有效劑量係視許多不同因素而變化,該等因素包括投與手段、目標位點、患者生理學狀態、患者為人類或動物、所投與之其他藥物及治療為預防性或治療性。通常,患者為人類,但非人類哺乳動物亦可經治療,例如伴生動物(諸如狗、貓、馬等)、實驗室哺乳動物(諸如兔、小鼠、大鼠等)及其類似動物。可滴定治療劑量以使安全性及功效最佳化。
本發明提供一種用於治療癌症之醫藥組合,其包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
本發明提供一種用於治療癌症之對CD19具有特異性之抗體或抗體片段,其中對CD19具有特異性之該抗體或抗體片段與阻斷SIRPα-CD47先天免疫檢查點之多肽組合投與,其中投與步驟係藉由以同步、按次序或按反向次序的方式組合投與對CD19具有特異性之抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽來進行。
在另一實施例中,本發明提供包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽之醫藥組合的用途,其用於製備治療癌症之藥劑。在另一實施例中,本發明提供包含對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽之醫藥組合的用途,其用於製備治療癌症之藥劑。
在另一實施例中,本發明提供一種用於治療癌症之方法,其包含向個體組合投與對CD19具有特異性之抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽之步驟。在另一實施例中,本發明提供一種用於治療癌症之方法,其包含向個體組合投與對CD19具有特異性之抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽之步驟,其中投與步驟係藉由以同步、按次序或按反向次序的方式組合投與對CD19具有特異性之抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽來進行。
組合
本發明提供與對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽組合用於治療血液癌之抗CD19抗體或其抗體片段,其中該抗CD19抗體或其抗體片段及對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽與一或多種醫藥劑組合投與。在本發明之一個實施例中,該抗CD19抗體或其抗體片段及對CD19具有特異性之抗體或抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽與醫藥劑組合投與。在本發明之另一實施例中,該抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之該多肽與一或多種其他醫藥劑組合投與。在一態樣中,該醫藥劑為額外醫藥劑。在本發明之一個實施例中,該醫藥劑為生物或化學療法藥劑。在本發明之另一實施例中,該醫藥劑為治療性抗體或抗體片段、氮芥(nitrogen mustard)、嘌呤類似物、沙立度胺(thalidomide)類似物、磷酸肌醇3-激酶抑制劑、BCL-2抑制劑或布魯頓氏酪胺酸激酶(bruton's tyrosine kinase;BTK)抑制劑。在另一實施例中,該醫藥劑為利妥昔單抗、R-CHOP、環磷醯胺、苯丁酸氮芥(chlorambucil)、烏拉莫司汀(uramustine)、異環磷醯胺、美法侖(melphalan)、苯達莫司汀(bendamustine)、巰基嘌呤、硫唑嘌呤(azathioprine)、硫鳥嘌呤、氟達拉賓(fludarabine)、沙立度胺、來那度胺、泊利度胺(pomalidomide)、艾德昔布、杜韋力西布(duvelisib)、考班昔布(copanlisib)、依魯替尼(ibrutinib)或維奈托克。
在另一實施例中,本發明提供抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽以用於治療血液癌,其中該抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽與利妥昔單抗、R-CHOP、環磷醯胺、苯丁酸氮芥、烏拉莫司汀、異環磷醯胺、美法侖、苯達莫司汀、巰基嘌呤、硫唑嘌呤、硫鳥嘌呤、氟達拉賓、撒利多胺、來那度胺、泊利度胺、艾德昔布、杜韋力西布、考班昔布、依魯替尼或維奈托克組合投與。
在一個態樣中,本發明提供一種用於治療癌症之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷該SIRPα-CD47先天免疫檢查點之多肽,其中該醫藥組合具有協同效應。
在一些實施例中,該協同效應提高總存活率(OS)、延長無進展存活期(PFS)、增加之反應率(RR)或增加或增強之癌細胞清除率。
在一些實施例中,該協同效應增加癌細胞死亡,減小癌細胞生長或增加非霍奇金氏淋巴瘤細胞之殺死。在一些其他實施例中,此類非霍奇金氏淋巴瘤細胞為自彌漫性大B細胞淋巴瘤(DBLCL)、伯基特淋巴瘤或套細胞淋巴瘤(MCL)衍生之細胞株。在一些其他實施例中,此類非霍奇金氏淋巴瘤細胞為Raji、RCK8、Toledo、U2932、CA46、JVM-2、Ramos、Daudi或SU-DHL-6細胞。
在一些實施例中,該協同效應在淋巴瘤小鼠模型中為增加存活率、減小腫瘤體積,或減小腫瘤生長。在一些其他實施例中,此類淋巴瘤小鼠模型為使用自彌漫性大B細胞淋巴瘤(DBLCL)、伯基特淋巴瘤或套細胞淋巴瘤(MCL)衍生之細胞的異種移植模型。在一些其他實施例中,此類淋巴瘤小鼠模型為使用Raji、RCK8、Toledo、U2932、CA46、JVM-2、Ramos、Daudi或SU-DHL-6細胞之異種移植模型。
在另一實施例中,用於治療癌症之包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽的醫藥組合為協同組合。
在一個態樣中,本發明提供一種用於治療血液癌之醫藥組合,其包含抗CD19抗體或其抗體片段及抗CD47抗體或其抗體片段,其中抗CD19抗體或其抗體片段包含以下重鏈可變區:EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSS (SEQ ID NO: 7)及以下輕鏈可變區:
且其中抗CD47抗體或其片段包含以下重鏈可變區:QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSS (SEQ ID NO: 30)及以下輕鏈可變區:
DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIK (SEQ ID NO:31),其中該醫藥組合具有協同效應。在一個實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在另一實施例中,包含該抗CD19抗體或其抗體片段及該抗CD47抗體或其抗體片段之該醫藥組合為協同組合。在另一實施例中,血液癌為非霍奇金氏淋巴瘤(NHL)。在另一實施例中,非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。在另一實施例中,血液癌為彌漫性大B細胞淋巴瘤。
在一個態樣中,本發明提供一種用於治療血液癌之醫藥組合,其包含抗CD19抗體或其抗體片段及抗CD47抗體或其抗體片段,其中抗CD19抗體或其抗體片段包含以下重鏈區:
EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK (SEQ ID NO: 11)及以下輕鏈區:
且其中抗CD47抗體或其片段包含以下重鏈:QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSSASTKGPSVFPLAPCSRSTSESTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTKTYTCNVDHKPSNTKVDKRVESKYGPPCPPCPAPEFLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKGLPSSIEKTISKAKGQPREPQVYTLPPSQEEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSRLTVDKSRWQEGNVFSCSVMHEALHNHYTQKSLSLSLGK (SEQ ID NO: 34)及以下輕鏈:DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC (SEQ ID NO:35),且其中該醫藥組合具有協同效應。在另一實施例中,包含該抗CD19抗體或其抗體片段及該抗CD47抗體或其抗體片段之該醫藥組合為協同組合。在一個實施例中,血液癌為慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。在另一實施例中,血液癌為非霍奇金氏淋巴瘤(NHL)。在另一實施例中,非霍奇金氏淋巴瘤係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤及套細胞淋巴瘤。在另一實施例中,血液癌為彌漫性大B細胞淋巴瘤。
抗體序列
表 1 : 塔法西塔單抗 (MOR208)
表 2 : B6H12
表 3 : 5F9 及變異體
實例 實例1:塔法西塔單抗(抗CD19 mAb)與CD47/SIRPα阻斷抗體活體外組合之功效
MOR208 介導之 ADCP 活性與 CD47/SIRP α 阻斷組合
| SEQ ID NO: | 胺基酸 | |
| HCDR1 | SEQ ID NO: 1 | SYVMH |
| HCDR2 | SEQ ID NO: 2 | NPYNDG |
| HCDR3 | SEQ ID NO: 3 | GTYYYGTRVFDY |
| LCDR1 | SEQ ID NO: 4 | RSSKSLQNVNGNTYLY |
| LCDR2 | SEQ ID NO: 5 | RMSNLNS |
| LCDR3 | SEQ ID NO: 6 | MQHLEYPIT |
| VH | SEQ ID NO: 7 | EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWG QGTLVTVSS |
| VL | SEQ ID NO: 8 | DIVMTQSPATLSLSPGERATLSCRSSKSLQNVNGNTYLYWFQQKPGQSPQLLIYRMSNLNSGVPDRFSGSGSGTEFTLTISSLEPEDFAVYYCMQHLEYPITFGAGTKLEIK |
| 重鏈恆定域 | SEQ ID NO: 9 | ASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK |
| 輕鏈恆定域 | SEQ ID NO: 10 | RTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKD STYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC |
| 完整重鏈 | SEQ ID NO: 11 | EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK |
| 完整輕鏈 | SEQ ID NO: 12 | DIVMTQSPATLSLSPGERATLSCRSSKSLQNVNGNTYLYWFQQKPGQSPQLLIYRMSNLNSGVPDRFSGSGSGTEFTLTISSLEPEDFAVYYCMQHLEYPITFGAGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC |
| SEQ ID NO: | 胺基酸 | |
| HCDR1 | SEQ ID NO: 14 | GYGMS |
| HCDR2 | SEQ ID NO: 15 | TITSGGTYTYYPDSVKG |
| HCDR3 | SEQ ID NO: 16 | SLAGNAMDY |
| LCDR1 | SEQ ID NO: 17 | RASQTISD |
| LCDR2 | SEQ ID NO: 18 | FASQSIS |
| LCDR3 | SEQ ID NO: 19 | QNGHGFPRT |
| VH | SEQ ID NO: 20 | EVQLVESGGDLVKPGGSLKLSCAASGFTFSGYGMSWVRQTPDKRLEWVATITSGGTYTYYPDSVKGRFTISRDNAKNTLYLQIDSLKSEDTAIYFCARSLAGNAMDYWGQGTSVTVSS |
| VL | SEQ ID NO: 21 | DIVMTQSPATLSVTPGDRVSLSCRASQTISDYLHWYQQKSHESPRLLIKFASQSISGIPSRFSGSGSGSDFTLSINSVEPEDVGVYYCQNGHGFPRTFGGGTKLEIK |
| SEQ ID NO: | 胺基酸 | |
| HCDR1 | SEQ ID NO: 22 | NYNMH |
| HCDR2 | SEQ ID NO: 23 | TIYPGNDDTSYNQKFKD |
| HCDR3 | SEQ ID NO: 24 | GGYRAMDY |
| LCDR1 | SEQ ID NO: 25 | RSSQSIVYSNGNTYLG |
| LCDR2 | SEQ ID NO: 26 | KVSNRFS |
| LCDR3 | SEQ ID NO: 27 | FQGSHVPYT |
| VH | SEQ ID NO: 28 | QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQGLEWIGTIYPGNDDTSYNQKFKDKATLTADKSTSTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSS |
| VL | SEQ ID NO: 29 | DVVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPKLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYHCFQGSHVPYTFGGGTKVEIK |
| VH | SEQ ID NO: 30 | QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSS |
| VL | SEQ ID NO: 31 | DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIK |
| VH | SEQ ID NO: 32 | QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWIGTIYPGNDDTSYNQKFKDRATLTADKSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSS |
| VL | SEQ ID NO: 33 | DVVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYHCFQGSHVPYTFGQGTKLEIK |
| 完整重鏈 | SEQ ID NO: 34 | QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSSASTKGPSVFPLAPCSRSTSESTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTKTYTCNVDHKPSNTKVDKRVESKYGPPCPPCPAPEFLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKGLPSSIEKTISKAKGQPREPQVYTLPPSQEEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSRLTVDKSRWQEGNVFSCSVMHEALHNHYTQKSLSLSLGK |
| 完整輕鏈 | SEQ ID NO: 35 | DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC |
根據活體外分析,測試MOR208(塔法西塔單抗)介導之吞噬作用在CD47/SIRPα阻斷時是否可進一步增強。在抗體依賴性細胞吞噬作用(ADCP)分析中判定塔法西塔單抗(抗CD19 mAb)與抗CD47(純系B6H12)功能性抗體組合之功效,其中THP-1單核球性細胞株或M1及M2巨噬細胞充當效應細胞。出於此目的,以下癌細胞株表徵為:三個伯基特淋巴瘤細胞株(Raji、Ramos及Daudi)及一個彌漫性大B細胞淋巴瘤(DLBCL)細胞株(SU-DHL-6)。在此等癌細胞上,量化CD19及CD47抗原表現量(
圖 1)。Raji細胞表現最高含量之CD19,但Ramos、Daudi及Toledo細胞展示CD19之高表現。SU-DHL-6細胞株為具有低CD19表現之唯一細胞株。可展示CD47表現於所有經分析癌細胞株上,其中僅SU-DHL-6具有低表現。
在ADCP分析中測試Ramos、Raji、Daudi及SU-DHL-6癌細胞株,其中THP-1單核球性癌細胞用作效應細胞。癌細胞與THP-1細胞一起以E:T (效應:目標)比率1:2接種,且在ADCP分析中連同與3 nM 抗CD47 mAb(純系B6H12)組合之塔法西塔單抗滴定系列一起共培育(
圖 2 至 4)。抗CD47抗體對塔法西塔單抗介導之ADCP的益處用基於流式細胞測量術之吞噬作用讀數來評估,其中效應及目標細胞用二種不同染料(具有CFSE之THP-1細胞及具有Cell Trace™ Violet之癌細胞)染色。以此方式,所獲得之雙重陽性細胞百分比表示吞噬之百分比。
另外,在ADCP分析中測試Ramos癌細胞株,其中M1及M2巨噬細胞用作效應細胞。為了產生M1及M2
0巨噬細胞,CD14+單核球自健康志願者之全血分離且在6天內成熟為具有50 ng/mL M-CSF之巨噬細胞。巨噬細胞藉由添加10 ng/mL IFN-γ及10 ng/mL LPS來進一步針對M1表現型極化48小時或繼續用50 ng/mL M-CSF處理以維持M2
0表現型。藉由流式細胞測量術分析及確認巨噬細胞表現型標記物CD80、CD86、CD163及CD206之表現量。Ramos細胞與M1或M2
0巨噬細胞一起以E:T (效應:目標)比率1:2接種,且連同與3 nM 抗CD47 mAb (純系B6H12)組合之塔法西塔單抗滴定系列一起共培育。在用MOR208及抗CD47 mAb (純系B6H12)處理3小時之後藉由流式細胞測量術分析ADCP (
圖 8)。
結果
ADCP分析展示MOR208介導之吞噬作用可在與3 nM之抗CD47 mAb(純系B6H12)組合時進一步增強(
圖 2 至 4)。
針對塔法西塔單抗及CD47/SIRPα檢查點阻斷之組合,觀測到Ramos細胞之吞噬作用與M1極化巨噬細胞以及M2
0極化巨噬細胞兩者相當的增加(
圖 8)。M1極化巨噬細胞以及M2
0極化巨噬細胞之ADCP活性在MOR208與CD47/SIRPα檢查點阻斷活體外組合時增加。總體而言,由組合驅動之吞噬活性之增加對於M2
0而言比M1極化巨噬細胞更明顯。
實例2:塔法西塔單抗與抗CD47抗體活體內組合之功效
為了評估抗CD47抗體(純系B6H12)及塔法西塔單抗之組合效應,在兩個皮下(MOR208P015及MOR208P016)及一個播散性存活率腫瘤模型(MOR208P014)中用Ramos伯基特淋巴瘤細胞進行三個功效研究。
由於Ramos細胞上之人類CD47 (hCD47)與表現於小鼠巨噬細胞及嗜中性球上之小鼠SIRPα (mSIRPα)之間之差異性結合親和力(Kwong等人2014;Iwamoto等人2014),在兩個不同基因小鼠品系中測試功效。在研究MOR208P014及MOR208P015中,使用描述緊密模擬人類CD47-SIRPα檢查點相互作用之Balb/c基因背景(SCID小鼠),且在研究MOR208P016中測試NOD-SCID基因品系。NOD-SCID最廣泛用於測試CD47阻斷化合物之文獻(Chao等人2010a;Liu等人2015;Buatois等人2018;Kauder等人2018),且報導具有高10倍之hCD47與mSIRPα檢查點結合親和力,進而潛在地引起放大的抗腫瘤效應(Huang等人2017)。
針對單一及組合功效之研究讀數為腫瘤體積(MOR208P015及MOR208P016)或動物存活率(MOR208P014)。
方法 : 活體內研究 - 實驗概述及分析
五至八週齡雌性
C.B-17 SCID (CB17/lcr-Prkdc
scid/lcrlcoCrl
;在研究MOR208P014;MOR208P015中)、NOD-SCID (
NOD.CB17-Prkdc
scid/J
;在研究MOR208P016中)係購自個別供應商(MOR208P015及MOR208P016:Charles River Laboratories;MOR208P014:Envigo)。動物圈養在IVC籠子(II型,聚碸籠子)中,每籠四至五隻,在12小時亮/暗循環中,且在實驗之前在實驗室中適應一週。所有動物接受過濾水及特定媒劑或含有裸鼠飲食之測試物(安慰劑食物:Sniff,物品編號:V1244-000)。
所有活體內研究中 Ramos 細胞之細胞培養
將Ramos人類伯基特淋巴瘤細胞在懸浮培養物中補充有20%胎牛血清、非必需胺基酸(2 mM L-麩醯胺酸)及丙酮酸鈉之RPMI 1640中培養。細胞連續繼代直至建立足夠細胞數量以用於注射。在細胞皮下接種至小鼠之前及之後,使用0.25%錐蟲藍排除分析對細胞進行計數且評估存活力。
MOR208P014 - Ramos 播散性存活模型中之功效研究 腫瘤細胞接種及隨機化
為了在SCID小鼠中恰當獲取原位腫瘤細胞,在腫瘤細胞接種前兩天開始,每天兩次,間隔12小時經由腹膜內注射25 mg/kg環磷醯胺來處理動物。在細胞接種當天(第0天),稱量小鼠,按體重(基於第0天體重量測)隨機分成十五組,且用1×10
6RAMOS細胞(於100 μL中)接種至尾部靜脈中。
處理及功效參數之評估
細胞接種後五天開始抗體處理。在此,CD47抗體(純系B6H12;4 mg/kg;BioXCell;目錄號:BE0019-1;批次號:655117M2)藉由腹膜內注射一週三次來投與。塔法西塔單抗(3 mg/kg)經靜脈內投與一週兩次,且經媒劑處理之組同樣經腹膜內注射磷酸鹽緩衝鹽水一週兩次。用所描述之測試物品處理進行總共三週。
在整個研究期間,緊密監測動物以展示病態跡象,諸如體重下降、疼痛及痛苦跡象、外觀及行為,其均為動物終止之明確原因。動物存活率進一步彙總於Kaplan及Meier圖式中。
針對統計評估,使用對數秩(Mantel-Cox)測試。所有統計分析均使用GraphPad Prism進行。p值小於0.05視為顯著的。
MOR208P015 - Ramos-SCID 皮下腫瘤模型中之功效研究 腫瘤細胞接種及隨機化
使用23量規1/2針,將5 × 10
6個Ramos腫瘤細胞(於Cultrex基底膜中)皮下植入至C.B-17 SCID小鼠中之右側腹中。注射體積為每隻小鼠0.2 mL。腫瘤植入日期記錄為第0天。一旦生長腫瘤到達70至150 mm
3之大小,將動物在其各別處理組中隨機化且開始治療。
處理及功效參數之評估
就抗體處理而言,一週投與塔法西塔單抗(10 mg/kg)兩次且一週投與抗CD47(純系B6H12;4 mg/kg;BioXCell;目錄號:BE0019-1;批次號:655117M2)三次。經媒劑處理之組經注射磷酸鹽緩衝鹽水一週兩次。所有各別處理經由腹膜內注射進行長達四週。
在第0天開始每週量測腫瘤大小兩次。使用針對橢球球面之方程式(l×w2)/2 = mm
3計算腫瘤體積,其中l及w係指在每次量測且假定單位密度時收集之較大及較小尺寸。每天監測體重變化,在處理之第一天開始且在最後一次處理後的一天結束。瀕死動物、具有過度體重下降(>25%體重)之動物或總腫瘤負荷為3,000 mm
3之動物在研究結束之前終止。
為了統計評估延遲腫瘤生長,產生Kaplan及Meier圖,展示到達腫瘤體積為3000 mm
3之時間。對數秩Mantel-COX測試用於評估統計差異。全部統計測試均使用GraphPad Prism進行。p值小於0.05視為顯著的。
MOR208P016 : NODSCID 小鼠中之 Ramos 皮下模型 腫瘤細胞接種及隨機化
在含有50% (v/v)基質膠(ref.356237,Corning)之200 μL RPMI 1640中,藉由使用23量規½針將1 × 10
7個Ramos腫瘤細胞皮下注射至雌性
C.B-17 SCID小鼠之右側腹中。一旦腫瘤到達100至200 mm
3之平均體積且在開始用各別抗體及媒劑對照處理之後,將動物隨機化。
處理及功效參數之評估
塔法西塔單抗(10 mg/kg,每週兩次)、抗CD47抗體(純系B6H12;4 mg/Kg;每週三次;BioXCell;目錄號:BE0019-1;批次號:655117M2)及媒劑(磷酸鹽緩衝鹽水)經腹膜內投與長達四週。
在腫瘤細胞注射當天開始每週量測腫瘤兩次。藉由使用橢球球面之方程式(l × w2)/2=mm
3計算腫瘤體積。最初每天監測體重變化,在第一天開始且在治療之最後一天結束。瀕死動物、具有過度體重下降(>25%體重)之動物或總腫瘤負荷為2,000 mm
3之動物在研究結束之前終止。
為了統計評估延遲腫瘤生長,產生Kaplan及Meier圖,展示到達腫瘤體積為1500 mm
3之時間。對數秩Mantel-Cox測試用於評估統計差異。全部統計測試均使用GraphPad Prism進行。p值小於0.05視為顯著的。
活體內研究之結果播散性存活模型(MOR208P014)中之MOR208及抗CD47抗體組合之功效
相較於媒劑對照,MOR208治療顯著地提高中值存活率高達40% (
p<0.0001****)。另外,與媒劑對照相比,單藥療法中用抗CD47 (純系B6H12)抗體阻斷CD47-SIRPα檢查點顯著地提高動物存活率高達3倍(
p<0.0001****)。十五隻動物中有十一隻仍在研究中,直至生命結束階段。就MOR208及抗CD47組合而言,此趨勢甚至更明顯。所有十五隻動物均保持存活直至研究結束(
B6H12 對比 MOR208 及 B6H12 : p=0.0348* ; MOR208 對比 MOR208 及 B6H12 : p<0.0001****)。由於組合治療組中之所有動物仍在研究中,因此無法進行關於此組合效應之功效的生物統計評估。來自活體內研究MOR208P014之資料彙總於
圖 5中。
Ramos-SCID皮下腫瘤(MOR208P015)中之MOR208組合功效
藉由使用Kaplan-Meier曲線進行延遲腫瘤生長之評估,如方法章節中所描述。相較於媒劑對照,針對MOR208單藥療法偵測到較小但仍顯著的腫瘤生長延遲(
媒劑對比 MOR208 : p=0.0331*)。另外,相較於媒劑對照,抗CD47 mAb (純系B6H12)單藥療法展示高達12%的顯著延遲腫瘤生長(
媒劑對比 B6H12 : p=0.0003***)。就MOR208及抗CD47 mAb組合而言,腫瘤生長延遲甚至更明顯。偵測到相較於MOR208單藥療法,腫瘤負荷降低20%,且相較於抗CD47單藥療法降低8%。但相較於抗CD47 mAb單藥療法對照,此效應並不顯著(
p=0.0985)。來自活體內研究MOR208P015之資料彙總於
圖 6中。
Ramos-NOD-SCID皮下腫瘤(MOR208P016)中之MOR208組合功效
類似於研究MOR208P015,藉由Kaplan-Meier曲線彙總腫瘤生長延遲。相較於媒劑對照,MOR208單療法顯著地延遲腫瘤生長高達11% (
媒劑對比 MOR208 對比: p=0.0095**)。此模型中之抗CD47 mAb(純系B6H12)單一藥劑功效極明顯且觀測到相較於媒劑對照腫瘤生長延遲78% (
媒劑對比 B6H12 : p<0.0001*****)。然而,相較於各別單藥療法對照,與MOR208組合之單療法功效增加更多,具有極顯著效應(
MOR208 對比 MOR208 及 B6H12 : p <0.0001**** ; B6H12 對比 MOR208 及 B6H12 : p =0.0017**)。來自活體內研究MOR208P016之所有資料彙總於
圖 7中。
實例3:塔法西塔單抗與馬羅單抗(抗CD47抗體)組合之功效
此研究經設計以評估抗CD19抗體(塔法西塔單抗)與馬羅單抗之組合是否可增加B細胞淋巴瘤細胞活體外之吞噬作用。
測試自彌漫性大B細胞淋巴瘤(DBLCL)、伯基特淋巴瘤或套細胞淋巴瘤(MCL)衍生之六種不同細胞株。根據製造商的指示,用CellTrace CFSE染料對各細胞株進行螢光標記。藉由培育且隨後用結合CD14之磁性珠粒純化而自富含白細胞之全血分離人類單核球。將所得單核球在人類重組巨噬細胞群落刺激因子(M-CSF)之存在下活體外培養7至10天,隨後收集且在共培養之前計數。藉由在96孔超低附著細胞培養盤之孔中以100ul體積共培養50,000個人類巨噬細胞及100,000個人類癌症細胞,以及在最終濃度為10ug/ml之所指示馬羅單抗及/或塔法西塔單抗治療來進行吞噬作用反應。將共培養物在37℃下培育2小時,隨後轉移至冰中以停止反應。使用經標記之抗CD11b抗體對巨噬細胞進行染色,且在流式細胞儀上分析反應。吞噬事件定義為基於FMO對照之CFSE+ CD11b+事件。此類雙重陽性事件對應於具有吞沒CFSE+腫瘤細胞之巨噬細胞。以CFSE陽性巨噬細胞之分數表示吞噬作用。
在所測試細胞株中,所有六種均展示單獨用馬羅單抗(抗CD47)治療之吞噬作用增加。類似地,所有六種均展示單獨用塔法西塔單抗(抗CD19)治療之吞噬作用增加。在六種細胞株中,四種(Raji、RCK8、Toledo及U2932)展示相較於任一單一治療,當用馬羅單抗及塔法西塔單抗兩者治療時吞噬作用增強(
圖 9)。當與單獨塔法西塔單抗相比較時,六種細胞株中有兩種(CA46、JVM-2)並未清晰地展示組合之增強功效(
圖 10)。
總而言之,此研究表明用馬羅單抗或塔法西塔單抗治療可增強B細胞淋巴瘤之活體外吞噬作用;且針對B細胞淋巴瘤之子集,兩種藥物之組合比任一單獨藥物更有效。此等結果與以下結論一致:當用於患者以治療B細胞淋巴瘤時,馬羅單抗及塔法西塔單抗可展示組合功效。
圖 1 : 用於 ADCP 分析之細胞株上之相關表面抗原的抗原表現量。接種1.0E+05 Raji、Ramos、Daudi或SU-DHL-6細胞,用50 µg/mL人類γ球蛋白阻斷30分鐘且用商業初級標記抗體或合適的同型對照染色30分鐘。用NovoCyte或NovoCyte Quanteon儀器進行分析讀數且用NovoCyte軟體分析資料。資料以展示平均螢光強度(MFI)比值之條形圖展示,藉由所關注抗原之MFI值相對於合適的同型對照之MFI值之歸一化計算。
圖 2 及圖 3 : 添加抗 CD47 mAb 增加塔法西塔單抗介導之 ADCP 。CFSE染色之THP-1細胞用作效應細胞且與Cell Trace™ Violet染色之Raji (
A)、Ramos (
B)、Daudi (
C)或SU-DHL-6 (
D)目標細胞在37℃及5% CO2下以E:T比率2:1共培育4小時。以目標細胞上之閘控為100%用於ADCP分析。效應細胞介導之腫瘤細胞之非特異性吞噬作用係藉由在缺乏抗體之情況下將效應細胞與目標細胞一起培育來判定,且在圖式上以灰色虛線展示,命名為背景ADCP。基於流式細胞測量術之讀數用以藉由量化吞噬目標細胞之效應細胞來量測目標細胞之吞噬作用,且因此對於兩種所使用之染色染料為雙重陽性的。當總目標細胞對應於100%時,吞噬之百分比表示雙重陽性細胞之百分比。黑色虛線表示塔法西塔單抗滴定,而添加3 nM抗CD47抗體(純系B6H12.2)之塔法西塔單抗滴定用黑色實線展示。誤差杠表示技術重複之標準差。灰色虛線指示不添加抗體之背景吞噬作用。
圖 4 : 添加抗 CD47 mAb 增加塔法西塔單抗介導之 ADCP 。CFSE染色之THP-1細胞用作效應細胞且與Cell Trace™ Violet染色之Raji (
A)或Ramos (
B)目標細胞在37℃及5% CO2下以E:T比率2:1共培育4小時。以目標細胞上之閘控為100%用於ADCP分析。效應細胞介導之腫瘤細胞之非特異性吞噬作用係藉由在缺乏抗體之情況下將效應細胞與目標細胞一起培育來判定,且在圖式上以灰色虛線展示,命名為背景ADCP。基於流式細胞測量術之讀數用以藉由量化吞噬目標細胞之效應細胞來量測目標細胞之吞噬作用,且因此對於兩種所使用之染色染料為雙重陽性的。當總目標細胞對應於100%時,吞噬之百分比表示雙重陽性細胞之百分比。黑色虛線表示塔法西塔單抗滴定,而添加3 nM抗CD47抗體(純系B6H12.2)之塔法西塔單抗滴定用黑色實線展示。灰色虛線指示不添加抗體之背景吞噬作用。
圖 5 : 播散性存活模型 (MOR208P014) 中之 MOR208 及抗 CD47 抗體組合之功效。 圖 6 : Ramos-SCID 皮下腫瘤 (MOR208P015) 中之 MOR208 組合功效。 圖 7 : Ramos-NOD-SCID 皮下腫瘤 (MOR208P016) 中之 MOR208 組合功效。 圖 8 : 在 M1 及 M2 巨噬細胞用作效應細胞之 ADCP 分析中 MOR208 及 CD47/SIRP α 檢查點之功效增加 Ramos 細胞之吞噬作用。 圖 9 : 用馬羅單抗 (magrolimab) 加上塔法西塔單抗之共治療增強不同淋巴瘤細胞之吞噬作用。經螢光標記之Raji細胞(A)、Toledo細胞(B)、U2932細胞(C)或RCK8細胞(D)與離體分化人類巨噬細胞以2:1之比率共培育,以及指示抗體以10µg/mL之濃度在37℃下處理2小時。藉由用針對細胞表面標記CD11b之抗體染色識別巨噬細胞,且藉由流式細胞測量術評估反應。吞噬事件定義為針對腫瘤細胞特異性螢光信號亦為陽性之總巨噬細胞(對應於已吞沒腫瘤細胞之巨噬細胞)之百分比。淋巴瘤細胞之吞噬作用藉由用馬羅單抗或塔法西塔單抗處理而增加;且此吞噬作用藉由兩種藥物之組合而增強。
圖 10 : 馬羅單抗及塔法西塔單抗增強 CA46 淋巴瘤細胞之吞噬作用 , 但並不展示組合作用。經螢光標記之CA46 (A)或JVM-2細胞(B)細胞與離體分化之人類巨噬細胞以2:1之比率共培育,以及指示抗體以10µg/mL之濃度在37℃下處理2小時。藉由用針對細胞表面標記CD11b之抗體染色識別巨噬細胞,且藉由流式細胞測量術評估反應。吞噬事件定義為針對腫瘤細胞特異性螢光信號亦為陽性之總巨噬細胞(對應於已吞沒腫瘤細胞之巨噬細胞)之百分比。CA46細胞及JVM-2細胞之吞噬作用藉由用馬羅單抗或塔法西塔單抗處理而增加;且此吞噬作用藉由兩種藥物之組合未明顯增強。
<![CDATA[<110> 德商莫菲西斯公司(MORPHOSYS AG)]]>
<![CDATA[<120> 包含抗CD19抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽之抗腫瘤組合療法]]>
<![CDATA[<130> MS312/PCT]]>
<![CDATA[<140> EP 20181309.4 ]]>
<![CDATA[<141> 2020-06-22]]>
<![CDATA[<150> EP 20210588.8]]>
<![CDATA[<151> 2020-11-30]]>
<![CDATA[<160> 35 ]]>
<![CDATA[<170> PatentIn version 3.5]]>
<![CDATA[<210> 1]]>
<![CDATA[<211> 5]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
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<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
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Ser Tyr Val Met His
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Asn Pro Tyr Asn Asp Gly
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Gly Thr Tyr Tyr Tyr Gly Thr Arg Val Phe Asp Tyr
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Arg Ser Ser Lys Ser Leu Gln Asn Val Asn Gly Asn Thr Tyr Leu Tyr
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Arg Met Ser Asn Leu Asn Ser
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Met Gln His Leu Glu Tyr Pro Ile Thr
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多肽」
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Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Lys Pro Gly Gly
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Ser Leu Lys Leu Ser Cys Ala Ala Ser Gly Tyr Thr Phe Thr Ser Tyr
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Val Met His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Ile
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Gly Tyr Ile Asn Pro Tyr Asn Asp Gly Thr Lys Tyr Asn Glu Lys Phe
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Gln Gly Arg Val Thr Ile Ser Ser Asp Lys Ser Ile Ser Thr Ala Tyr
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Gln Gly Thr Leu Val Thr Val Ser Ser
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Asp Ile Val Met Thr Gln Ser Pro Ala Thr Leu Ser Leu Ser Pro Gly
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Glu Arg Ala Thr Leu Ser Cys Arg Ser Ser Lys Ser Leu Gln Asn Val
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Asn Gly Asn Thr Tyr Leu Tyr Trp Phe Gln Gln Lys Pro Gly Gln Ser
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Pro Gln Leu Leu Ile Tyr Arg Met Ser Asn Leu Asn Ser Gly Val Pro
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Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Glu Phe Thr Leu Thr Ile
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Ala Ser Thr Lys Gly Pro Ser Val Phe Pro Leu Ala Pro Ser Ser Lys
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Ser Thr Ser Gly Gly Thr Ala Ala Leu Gly Cys Leu Val Lys Asp Tyr
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Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser Gly Ala Leu Thr Ser
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Gly Val His Thr Phe Pro Ala Val Leu Gln Ser Ser Gly Leu Tyr Ser
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Leu Ser Ser Val Val Thr Val Pro Ser Ser Ser Leu Gly Thr Gln Thr
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Tyr Ile Cys Asn Val Asn His Lys Pro Ser Asn Thr Lys Val Asp Lys
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Lys Val Glu Pro Lys Ser Cys Asp Lys Thr His Thr Cys Pro Pro Cys
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Pro Ala Pro Glu Leu Leu Gly Gly Pro Asp Val Phe Leu Phe Pro Pro
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Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys
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Val Val Val Asp Val Ser His Glu Asp Pro Glu Val Gln Phe Asn Trp
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Tyr Val Asp Gly Val Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu
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Glu Gln Phe Asn Ser Thr Phe Arg Val Val Ser Val Leu Thr Val Val
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His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn
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Lys Ala Leu Pro Ala Pro Glu Glu Lys Thr Ile Ser Lys Thr Lys Gly
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Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg Glu Glu
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Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr
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Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn
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Asn Tyr Lys Thr Thr Pro Pro Met Leu Asp Ser Asp Gly Ser Phe Phe
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Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn
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Val Phe Ser Cys Ser Val Met His Glu Ala Leu His Asn His Tyr Thr
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Gln Lys Ser Leu Ser Leu Ser Pro Gly Lys
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Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp Glu
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Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe
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Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu Gln
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<![CDATA[<210> 11]]>
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<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 11]]>
Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Lys Pro Gly Gly
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Ser Leu Lys Leu Ser Cys Ala Ala Ser Gly Tyr Thr Phe Thr Ser Tyr
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Val Met His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Ile
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Gly Tyr Ile Asn Pro Tyr Asn Asp Gly Thr Lys Tyr Asn Glu Lys Phe
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Gln Gly Arg Val Thr Ile Ser Ser Asp Lys Ser Ile Ser Thr Ala Tyr
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Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Met Tyr Tyr Cys
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Ala Arg Gly Thr Tyr Tyr Tyr Gly Thr Arg Val Phe Asp Tyr Trp Gly
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Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser
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Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala
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Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val
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Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala
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Val Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val
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Pro Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His
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Lys Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys
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Asp Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly
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Gly Pro Asp Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met
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Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His
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Glu Asp Pro Glu Val Gln Phe Asn Trp Tyr Val Asp Gly Val Glu Val
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His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Phe Asn Ser Thr Phe
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Arg Val Val Ser Val Leu Thr Val Val His Gln Asp Trp Leu Asn Gly
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Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Glu
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Glu Lys Thr Ile Ser Lys Thr Lys Gly Gln Pro Arg Glu Pro Gln Val
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Tyr Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser
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Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu
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Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro
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Met Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val
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Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met
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His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser
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Pro Gly Lys
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<![CDATA[<210> 12]]>
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多肽」
<![CDATA[<400> 12]]>
Asp Ile Val Met Thr Gln Ser Pro Ala Thr Leu Ser Leu Ser Pro Gly
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Glu Arg Ala Thr Leu Ser Cys Arg Ser Ser Lys Ser Leu Gln Asn Val
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Pro Gln Leu Leu Ile Tyr Arg Met Ser Asn Leu Asn Ser Gly Val Pro
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Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Glu Phe Thr Leu Thr Ile
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Ser Ser Leu Glu Pro Glu Asp Phe Ala Val Tyr Tyr Cys Met Gln His
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Leu Glu Tyr Pro Ile Thr Phe Gly Ala Gly Thr Lys Leu Glu Ile Lys
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Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp Glu
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Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe
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Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp Ser
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Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr Glu
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Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser Ser
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Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys
210 215
<![CDATA[<210> 13]]>
<![CDATA[<211> 556]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 智人]]>
<![CDATA[<400> 13]]>
Met Pro Pro Pro Arg Leu Leu Phe Phe Leu Leu Phe Leu Thr Pro Met
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Glu Val Arg Pro Glu Glu Pro Leu Val Val Lys Val Glu Glu Gly Asp
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Asn Ala Val Leu Gln Cys Leu Lys Gly Thr Ser Asp Gly Pro Thr Gln
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Gln Leu Thr Trp Ser Arg Glu Ser Pro Leu Lys Pro Phe Leu Lys Leu
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Ser Leu Gly Leu Pro Gly Leu Gly Ile His Met Arg Pro Leu Ala Ile
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Trp Leu Phe Ile Phe Asn Val Ser Gln Gln Met Gly Gly Phe Tyr Leu
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Cys Gln Pro Gly Pro Pro Ser Glu Lys Ala Trp Gln Pro Gly Trp Thr
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Val Asn Val Glu Gly Ser Gly Glu Leu Phe Arg Trp Asn Val Ser Asp
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Leu Gly Gly Leu Gly Cys Gly Leu Lys Asn Arg Ser Ser Glu Gly Pro
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Ser Ser Pro Ser Gly Lys Leu Met Ser Pro Lys Leu Tyr Val Trp Ala
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Lys Asp Arg Pro Glu Ile Trp Glu Gly Glu Pro Pro Cys Leu Pro Pro
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Arg Asp Ser Leu Asn Gln Ser Leu Ser Gln Asp Leu Thr Met Ala Pro
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Gly Ser Thr Leu Trp Leu Ser Cys Gly Val Pro Pro Asp Ser Val Ser
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Arg Gly Pro Leu Ser Trp Thr His Val His Pro Lys Gly Pro Lys Ser
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Leu Leu Ser Leu Glu Leu Lys Asp Asp Arg Pro Ala Arg Asp Met Trp
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Val Met Glu Thr Gly Leu Leu Leu Pro Arg Ala Thr Ala Gln Asp Ala
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Gly Lys Tyr Tyr Cys His Arg Gly Asn Leu Thr Met Ser Phe His Leu
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Glu Ile Thr Ala Arg Pro Val Leu Trp His Trp Leu Leu Arg Thr Gly
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Gly Trp Lys Val Ser Ala Val Thr Leu Ala Tyr Leu Ile Phe Cys Leu
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Cys Ser Leu Val Gly Ile Leu His Leu Gln Arg Ala Leu Val Leu Arg
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Arg Lys Arg Lys Arg Met Thr Asp Pro Thr Arg Arg Phe Phe Lys Val
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Thr Pro Pro Pro Gly Ser Gly Pro Gln Asn Gln Tyr Gly Asn Val Leu
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Ser Leu Pro Thr Pro Thr Ser Gly Leu Gly Arg Ala Gln Arg Trp Ala
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Ala Gly Leu Gly Gly Thr Ala Pro Ser Tyr Gly Asn Pro Ser Ser Asp
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Val Gln Ala Asp Gly Ala Leu Gly Ser Arg Ser Pro Pro Gly Val Gly
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Pro Glu Glu Glu Glu Gly Glu Gly Tyr Glu Glu Pro Asp Ser Glu Glu
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Asp Ser Glu Phe Tyr Glu Asn Asp Ser Asn Leu Gly Gln Asp Gln Leu
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Ser Gln Asp Gly Ser Gly Tyr Glu Asn Pro Glu Asp Glu Pro Leu Gly
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Pro Glu Asp Glu Asp Ser Phe Ser Asn Ala Glu Ser Tyr Glu Asn Glu
450 455 460
Asp Glu Glu Leu Thr Gln Pro Val Ala Arg Thr Met Asp Phe Leu Ser
465 470 475 480
Pro His Gly Ser Ala Trp Asp Pro Ser Arg Glu Ala Thr Ser Leu Gly
485 490 495
Ser Gln Ser Tyr Glu Asp Met Arg Gly Ile Leu Tyr Ala Ala Pro Gln
500 505 510
Leu Arg Ser Ile Arg Gly Gln Pro Gly Pro Asn His Glu Glu Asp Ala
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Asp Ser Tyr Glu Asn Met Asp Asn Pro Asp Gly Pro Asp Pro Ala Trp
530 535 540
Gly Gly Gly Gly Arg Met Gly Thr Trp Ser Thr Arg
545 550 555
<![CDATA[<210> 14]]>
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肽」
<![CDATA[<400> 14]]>
Gly Tyr Gly Met Ser
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<![CDATA[<212> PRT]]>
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<![CDATA[<400> 15]]>
Thr Ile Thr Ser Gly Gly Thr Tyr Thr Tyr Tyr Pro Asp Ser Val Lys
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Gly
<![CDATA[<210> 16]]>
<![CDATA[<211> 9]]>
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<![CDATA[<400> 16]]>
Ser Leu Ala Gly Asn Ala Met Asp Tyr
1 5
<![CDATA[<210> 17]]>
<![CDATA[<211> 8]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
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<![CDATA[<400> 17]]>
Arg Ala Ser Gln Thr Ile Ser Asp
1 5
<![CDATA[<210> 18]]>
<![CDATA[<211> 7]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
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<![CDATA[<400> 18]]>
Phe Ala Ser Gln Ser Ile Ser
1 5
<![CDATA[<210> 19]]>
<![CDATA[<211> 9]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
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<![CDATA[<400> 19]]>
Gln Asn Gly His Gly Phe Pro Arg Thr
1 5
<![CDATA[<210> 20]]>
<![CDATA[<211> 118]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
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多肽」
<![CDATA[<400> 20]]>
Glu Val Gln Leu Val Glu Ser Gly Gly Asp Leu Val Lys Pro Gly Gly
1 5 10 15
Ser Leu Lys Leu Ser Cys Ala Ala Ser Gly Phe Thr Phe Ser Gly Tyr
20 25 30
Gly Met Ser Trp Val Arg Gln Thr Pro Asp Lys Arg Leu Glu Trp Val
35 40 45
Ala Thr Ile Thr Ser Gly Gly Thr Tyr Thr Tyr Tyr Pro Asp Ser Val
50 55 60
Lys Gly Arg Phe Thr Ile Ser Arg Asp Asn Ala Lys Asn Thr Leu Tyr
65 70 75 80
Leu Gln Ile Asp Ser Leu Lys Ser Glu Asp Thr Ala Ile Tyr Phe Cys
85 90 95
Ala Arg Ser Leu Ala Gly Asn Ala Met Asp Tyr Trp Gly Gln Gly Thr
100 105 110
Ser Val Thr Val Ser Ser
115
<![CDATA[<210> 21]]>
<![CDATA[<211> 107]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 21]]>
Asp Ile Val Met Thr Gln Ser Pro Ala Thr Leu Ser Val Thr Pro Gly
1 5 10 15
Asp Arg Val Ser Leu Ser Cys Arg Ala Ser Gln Thr Ile Ser Asp Tyr
20 25 30
Leu His Trp Tyr Gln Gln Lys Ser His Glu Ser Pro Arg Leu Leu Ile
35 40 45
Lys Phe Ala Ser Gln Ser Ile Ser Gly Ile Pro Ser Arg Phe Ser Gly
50 55 60
Ser Gly Ser Gly Ser Asp Phe Thr Leu Ser Ile Asn Ser Val Glu Pro
65 70 75 80
Glu Asp Val Gly Val Tyr Tyr Cys Gln Asn Gly His Gly Phe Pro Arg
85 90 95
Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile Lys
100 105
<![CDATA[<210> 22]]>
<![CDATA[<211> 5]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
<![CDATA[<400> 22]]>
Asn Tyr Asn Met His
1 5
<![CDATA[<210> 23]]>
<![CDATA[<211> 17]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
<![CDATA[<400> 23]]>
Thr Ile Tyr Pro Gly Asn Asp Asp Thr Ser Tyr Asn Gln Lys Phe Lys
1 5 10 15
Asp
<![CDATA[<210> 24]]>
<![CDATA[<211> 8]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
<![CDATA[<400> 24]]>
Gly Gly Tyr Arg Ala Met Asp Tyr
1 5
<![CDATA[<210> 25]]>
<![CDATA[<211> 16]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
<![CDATA[<400> 25]]>
Arg Ser Ser Gln Ser Ile Val Tyr Ser Asn Gly Asn Thr Tyr Leu Gly
1 5 10 15
<![CDATA[<210> 26]]>
<![CDATA[<211> 7]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
<![CDATA[<400> 26]]>
Lys Val Ser Asn Arg Phe Ser
1 5
<![CDATA[<210> 27]]>
<![CDATA[<211> 9]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
肽」
<![CDATA[<400> 27]]>
Phe Gln Gly Ser His Val Pro Tyr Thr
1 5
<![CDATA[<210> 28]]>
<![CDATA[<211> 117]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 28]]>
Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala
1 5 10 15
Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asn Tyr
20 25 30
Asn Met His Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Ile
35 40 45
Gly Thr Ile Tyr Pro Gly Asn Asp Asp Thr Ser Tyr Asn Gln Lys Phe
50 55 60
Lys Asp Lys Ala Thr Leu Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr
65 70 75 80
Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95
Ala Arg Gly Gly Tyr Arg Ala Met Asp Tyr Trp Gly Gln Gly Thr Leu
100 105 110
Val Thr Val Ser Ser
115
<![CDATA[<210> 29]]>
<![CDATA[<211> 112]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 29]]>
Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly
1 5 10 15
Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Ile Val Tyr Ser
20 25 30
Asn Gly Asn Thr Tyr Leu Gly Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45
Pro Lys Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro
50 55 60
Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile
65 70 75 80
Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr His Cys Phe Gln Gly
85 90 95
Ser His Val Pro Tyr Thr Phe Gly Gly Gly Thr Lys Val Glu Ile Lys
100 105 110
<![CDATA[<210> 30]]>
<![CDATA[<211> 117]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 30]]>
Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala
1 5 10 15
Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asn Tyr
20 25 30
Asn Met His Trp Val Arg Gln Ala Pro Gly Gln Arg Leu Glu Trp Met
35 40 45
Gly Thr Ile Tyr Pro Gly Asn Asp Asp Thr Ser Tyr Asn Gln Lys Phe
50 55 60
Lys Asp Arg Val Thr Ile Thr Ala Asp Thr Ser Ala Ser Thr Ala Tyr
65 70 75 80
Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95
Ala Arg Gly Gly Tyr Arg Ala Met Asp Tyr Trp Gly Gln Gly Thr Leu
100 105 110
Val Thr Val Ser Ser
115
<![CDATA[<210> 31]]>
<![CDATA[<211> 112]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 31]]>
Asp Ile Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly
1 5 10 15
Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Ile Val Tyr Ser
20 25 30
Asn Gly Asn Thr Tyr Leu Gly Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45
Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro
50 55 60
Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile
65 70 75 80
Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr Cys Phe Gln Gly
85 90 95
Ser His Val Pro Tyr Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys
100 105 110
<![CDATA[<210> 32]]>
<![CDATA[<211> 117]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 32]]>
Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala
1 5 10 15
Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asn Tyr
20 25 30
Asn Met His Trp Val Arg Gln Ala Pro Gly Gln Arg Leu Glu Trp Ile
35 40 45
Gly Thr Ile Tyr Pro Gly Asn Asp Asp Thr Ser Tyr Asn Gln Lys Phe
50 55 60
Lys Asp Arg Ala Thr Leu Thr Ala Asp Lys Ser Ala Ser Thr Ala Tyr
65 70 75 80
Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95
Ala Arg Gly Gly Tyr Arg Ala Met Asp Tyr Trp Gly Gln Gly Thr Leu
100 105 110
Val Thr Val Ser Ser
115
<![CDATA[<210> 33]]>
<![CDATA[<211> 112]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 33]]>
Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly
1 5 10 15
Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Ile Val Tyr Ser
20 25 30
Asn Gly Asn Thr Tyr Leu Gly Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45
Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro
50 55 60
Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile
65 70 75 80
Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr His Cys Phe Gln Gly
85 90 95
Ser His Val Pro Tyr Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys
100 105 110
<![CDATA[<210> 34]]>
<![CDATA[<211> 444]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 34]]>
Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala
1 5 10 15
Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asn Tyr
20 25 30
Asn Met His Trp Val Arg Gln Ala Pro Gly Gln Arg Leu Glu Trp Met
35 40 45
Gly Thr Ile Tyr Pro Gly Asn Asp Asp Thr Ser Tyr Asn Gln Lys Phe
50 55 60
Lys Asp Arg Val Thr Ile Thr Ala Asp Thr Ser Ala Ser Thr Ala Tyr
65 70 75 80
Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95
Ala Arg Gly Gly Tyr Arg Ala Met Asp Tyr Trp Gly Gln Gly Thr Leu
100 105 110
Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val Phe Pro Leu
115 120 125
Ala Pro Cys Ser Arg Ser Thr Ser Glu Ser Thr Ala Ala Leu Gly Cys
130 135 140
Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser
145 150 155 160
Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val Leu Gln Ser
165 170 175
Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro Ser Ser Ser
180 185 190
Leu Gly Thr Lys Thr Tyr Thr Cys Asn Val Asp His Lys Pro Ser Asn
195 200 205
Thr Lys Val Asp Lys Arg Val Glu Ser Lys Tyr Gly Pro Pro Cys Pro
210 215 220
Pro Cys Pro Ala Pro Glu Phe Leu Gly Gly Pro Ser Val Phe Leu Phe
225 230 235 240
Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr Pro Glu Val
245 250 255
Thr Cys Val Val Val Asp Val Ser Gln Glu Asp Pro Glu Val Gln Phe
260 265 270
Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys Thr Lys Pro
275 280 285
Arg Glu Glu Gln Phe Asn Ser Thr Tyr Arg Val Val Ser Val Leu Thr
290 295 300
Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val
305 310 315 320
Ser Asn Lys Gly Leu Pro Ser Ser Ile Glu Lys Thr Ile Ser Lys Ala
325 330 335
Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro Ser Gln
340 345 350
Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val Lys Gly
355 360 365
Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn Gly Gln Pro
370 375 380
Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser Asp Gly Ser
385 390 395 400
Phe Phe Leu Tyr Ser Arg Leu Thr Val Asp Lys Ser Arg Trp Gln Glu
405 410 415
Gly Asn Val Phe Ser Cys Ser Val Met His Glu Ala Leu His Asn His
420 425 430
Tyr Thr Gln Lys Ser Leu Ser Leu Ser Leu Gly Lys
435 440
<![CDATA[<210> 35]]>
<![CDATA[<211> 219]]>
<![CDATA[<212> PRT]]>
<![CDATA[<213> 人工序列]]>
<![CDATA[<220>]]>
<![CDATA[<221> source]]>
<![CDATA[<223> /註釋=「人工序列之描述:合成]]>
多肽」
<![CDATA[<400> 35]]>
Asp Ile Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly
1 5 10 15
Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Ile Val Tyr Ser
20 25 30
Asn Gly Asn Thr Tyr Leu Gly Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45
Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro
50 55 60
Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile
65 70 75 80
Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr Cys Phe Gln Gly
85 90 95
Ser His Val Pro Tyr Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys
100 105 110
Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp Glu
115 120 125
Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe
130 135 140
Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu Gln
145 150 155 160
Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp Ser
165 170 175
Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr Glu
180 185 190
Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser Ser
195 200 205
Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys
210 215
Claims (18)
- 一種用於治療癌症之醫藥組合,其包含抗CD19抗體或其抗體片段及阻斷SIRPα-CD47先天免疫檢查點之多肽。
- 如請求項1之醫藥組合,其用於治療癌症,其中該癌症為血液癌。
- 如請求項2之醫藥組合,其用於治療血液癌,其中該血液癌為慢性淋巴球性白血病(chronic lymphocytic leukemia;CLL)、非霍奇金氏淋巴瘤(non-Hodgkin's lymphoma;NHL)、小淋巴球性淋巴瘤(small lymphocytic lymphoma;SLL)或急性淋巴母細胞白血病(acute lymphoblastic leukemia;ALL)。
- 如請求項3之醫藥組合,其用於治療NHL,其中該NHL係選自由以下組成之群:濾泡性淋巴瘤、小淋巴球性淋巴瘤、黏膜相關淋巴組織、邊緣區淋巴瘤、彌漫性大B細胞淋巴瘤、伯基特氏淋巴瘤(Burkitt's lymphoma)及套細胞淋巴瘤。
- 如前述請求項中任一項之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD19抗體或其抗體片段及阻斷該SIRPα-CD47先天免疫檢查點之該多肽係以單獨方式投與。
- 如請求項1至4中任一項之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD19抗體或其抗體片段及阻斷該SIRPα-CD47先天免疫檢查點之該多肽係以同步方式投與。
- 如前述請求項中任一項之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD19抗體或其抗體片段包含重鏈可變區及輕鏈可變區,該重鏈可變區包含:包含序列SYVMH (SEQ ID NO: 1)之HCDR1區、包含序列NPYNDG (SEQ ID NO: 2)之HCDR2區,及包含序列GTYYYGTRVFDY (SEQ ID NO: 3)之HCDR3區;該輕鏈可變區包含:包含序列RSSKSLQNVNGNTYLY (SEQ ID NO: 4)之LCDR1區、包含序列RMSNLNS (SEQ ID NO: 5)之LCDR2區,及包含序列MQHLEYPIT (SEQ ID NO: 6)之LCDR3區。
- 如請求項7之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD19抗體或其抗體片段包含以下重鏈可變區: EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSS (SEQ ID NO: 7) 及以下輕鏈可變區: DIVMTQSPATLSLSPGERATLSCRSSKSLQNVNGNTYLYWFQQKPGQSPQLLIYRMSNLNSGVPDRFSGSGSGTEFTLTISSLEPEDFAVYYCMQHLEYPITFGAGTKLEIK(SEQ ID NO: 8)。
- 如請求項8之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD19抗體包含以下重鏈:EVQLVESGGGLVKPGGSLKLSCAASGYTFTSYVMHWVRQAPGKGLEWIGYINPYNDGTKYNEKFQGRVTISSDKSISTAYMELSSLRSEDTAMYYCARGTYYYGTRVFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTFRVVSVLTVVHQDWLNGKEYKCKVSNKALPAPEEKTISKTKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPMLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK (SEQ ID NO: 11)。
- 如請求項9之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD19抗體或其抗體片段包含以下輕鏈:DIVMTQSPATLSLSPGERATLSCRSSKSLQNVNGNTYLYWFQQKPGQSPQLLIYRMSNLNSGVPDRFSGSGSGTEFTLTISSLEPEDFAVYYCMQHLEYPITFGAGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC (SEQ ID NO: 12)。
- 如前述請求項中任一項之醫藥組合,其用於如前述請求項中任一項之用途,其中阻斷該SIRPα-CD47先天免疫檢查點之該多肽為多肽類SIRPα反應劑或與人類CD47或人類SIRPα特異性結合之抗體或抗體片段。
- 如前述請求項中任一項之醫藥組合,其用於如前述請求項中任一項之用途,其中阻斷該SIRPα-CD47先天免疫檢查點之該多肽為包含重鏈可變區及輕鏈可變區之抗CD47抗體或其片段,該重鏈可變區包含:包含序列NYNMH (SEQ ID NO: 22)之HCDR1區、包含序列TIYPGNDDTSYNQKFKD (SEQ ID NO: 23)之HCDR2區,及包含序列GGYRAMDY (SEQ ID NO: 24)之HCDR3區;該輕鏈可變區包含:包含序列RSSQSIVYSNGNTYLG (SEQ ID NO: 25)之LCDR1區、包含序列KVSNRFS (SEQ ID NO: 26)之LCDR2區,及包含序列FQGSHVPYT (SEQ ID NO: 27)之LCDR3區。
- 如請求項12之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD47抗體或其片段包含以下重鏈可變區:QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSS (SEQ ID NO: 30)及以下輕鏈可變區:DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIK (SEQ ID NO: 31)。
- 如請求項13之醫藥組合,其用於如前述請求項中任一項之用途,其中該抗CD47抗體或其片段包含以下重鏈: QVQLVQSGAEVKKPGASVKVSCKASGYTFTNYNMHWVRQAPGQRLEWMGTIYPGNDDTSYNQKFKDRVTITADTSASTAYMELSSLRSEDTAVYYCARGGYRAMDYWGQGTLVTVSSASTKGPSVFPLAPCSRSTSESTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTKTYTCNVDHKPSNTKVDKRVESKYGPPCPPCPAPEFLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKGLPSSIEKTISKAKGQPREPQVYTLPPSQEEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSRLTVDKSRWQEGNVFSCSVMHEALHNHYTQKSLSLSLGK (SEQ ID NO: 34)及以下輕鏈:DIVMTQSPLSLPVTPGEPASISCRSSQSIVYSNGNTYLGWYLQKPGQSPQLLIYKVSNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQGSHVPYTFGQGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC (SEQ ID NO: 35)。
- 一種用於如前述請求項中任一項之治療的套組,其包含如前述請求項中任一項之抗CD19抗體或其抗體片段及與阻斷如前述請求項中任一項之SIRPα-CD47先天免疫檢查點之多肽組合投與該抗CD19抗體或其抗體片段的說明書。
- 一種治療患有癌症之人類個體之方法,其包含: (a)向該人類個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及 (b)向該人類個體投與抗CD19抗體或其抗體片段。
- 一種減小人類個體中癌症大小之方法,其包含: (a)向該人類個體投與阻斷SIRPα-CD47先天免疫檢查點之多肽;及 (b)向該人類個體投與抗CD19抗體或其抗體片段。
- 如請求項16或17之方法,其中該癌症為血液癌,包括但不限於慢性淋巴球性白血病(CLL)、非霍奇金氏淋巴瘤(NHL)、小淋巴球性淋巴瘤(SLL)或急性淋巴母細胞白血病(ALL)。
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20181309 | 2020-06-22 | ||
| EP20181309.4 | 2020-06-22 | ||
| EP20210588.8 | 2020-11-30 | ||
| EP20210588 | 2020-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW202216193A true TW202216193A (zh) | 2022-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW110122819A TW202216193A (zh) | 2020-06-22 | 2021-06-22 | 包含抗CD19抗體及阻斷SIRPα-CD47先天免疫檢查點之多肽之抗腫瘤組合療法 |
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| Country | Link |
|---|---|
| US (1) | US20230014026A1 (zh) |
| EP (1) | EP4168449A1 (zh) |
| JP (1) | JP2023530499A (zh) |
| KR (1) | KR20230030636A (zh) |
| CN (1) | CN115956088A (zh) |
| AU (1) | AU2021298106A1 (zh) |
| CA (1) | CA3181827A1 (zh) |
| TW (1) | TW202216193A (zh) |
| WO (1) | WO2021259902A1 (zh) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3337506B1 (en) | 2015-08-21 | 2021-07-21 | MorphoSys AG | Combinations and uses thereof |
| RS62036B1 (sr) | 2016-10-28 | 2021-07-30 | Morphosys Ag | Kombinacija anti cd19 antitela sa bcl-2 inhibitorom i njihova upotreba |
| KR20200030337A (ko) | 2018-09-12 | 2020-03-20 | 주식회사 녹십자랩셀 | 종양 치료를 위한 항-cd 19 항체 및 자연살해세포를 포함하는 약학적 조합물 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5641870A (en) | 1995-04-20 | 1997-06-24 | Genentech, Inc. | Low pH hydrophobic interaction chromatography for antibody purification |
| JP3614866B2 (ja) | 1997-06-12 | 2005-01-26 | リサーチ コーポレイション テクノロジーズ,インコーポレイティド | 人工抗体ポリペプチド |
| EP2216342B1 (en) | 2003-07-31 | 2015-04-22 | Immunomedics, Inc. | Anti-CD19 antibodies |
| US7902338B2 (en) | 2003-07-31 | 2011-03-08 | Immunomedics, Inc. | Anti-CD19 antibodies |
| CA2611814A1 (en) | 2005-06-20 | 2007-01-04 | Medarex, Inc. | Cd19 antibodies and their uses |
| DK2270050T3 (da) | 2005-12-30 | 2013-08-12 | Merck Patent Gmbh | Anti-CD19-antistoffer med nedsat immunogenicitet |
| ME01786B (me) | 2006-08-14 | 2014-09-20 | Xencor Inc | Optimizovana antitela usmerena na cd19 |
| WO2008031056A2 (en) | 2006-09-08 | 2008-03-13 | Medimmune, Llc | Humanized anti-cd19 antibodies and their use in treatment of oncology, transplantation and autoimmune disease |
| EP3392273A1 (en) | 2007-05-30 | 2018-10-24 | Xencor, Inc. | Methods and compositions for inhibiting cd32b expressing cells |
| CN101903403B (zh) | 2007-10-19 | 2016-03-16 | 西雅图基因公司 | Cd19结合剂及其应用 |
| EA201190132A1 (ru) | 2009-02-23 | 2013-01-30 | Гленмарк Фармасьютикалс С.А. | Гуманизированные антитела, связывающиеся с cd19, и их применение |
| HUE060541T2 (hu) | 2010-05-14 | 2023-03-28 | Univ Leland Stanford Junior | Humanizált és kiméra monoklonális CD47 elleni ellenanyagok |
| WO2011147834A1 (en) | 2010-05-26 | 2011-12-01 | Roche Glycart Ag | Antibodies against cd19 and uses thereof |
| EP2409993A1 (en) | 2010-07-19 | 2012-01-25 | International-Drug-Development-Biotech | Anti-CD19 antibody having ADCC function with improved glycosylation profile |
| EP2409712A1 (en) | 2010-07-19 | 2012-01-25 | International-Drug-Development-Biotech | Anti-CD19 antibody having ADCC and CDC functions and improved glycosylation profile |
| US8646196B2 (en) | 2010-09-16 | 2014-02-11 | American Louver Company | Sign assembly |
| WO2012071042A1 (en) | 2010-11-24 | 2012-05-31 | Government Of The U.S.A. Represented By The Secretary, Dept. Of Health & Human Services | Compositions and methods for treating or preventing lupus |
| EP2524929A1 (en) | 2011-05-17 | 2012-11-21 | Sanofi | Use of anti-CD19 maytansinoid immunoconjugate antibody for the treatment of CD19+ B-cell malignancies syptoms |
| DK3725807T3 (da) * | 2012-12-03 | 2026-01-12 | Novimmune Sa | Anti-cd47 antistoffer og fremgangsmåder til anvendelse deraf |
| SI2961831T1 (sl) * | 2013-02-26 | 2020-10-30 | Memorial Sloan Kettering Cancer Center | Sestavki in postopki za imunoterapijo |
| HK1257309A1 (zh) * | 2015-09-21 | 2019-10-18 | Erasmus University Medical Center | 抗-cd47抗体及使用方法 |
| EP3909985A1 (en) | 2016-06-27 | 2021-11-17 | MorphoSys AG | Anti-cd19 antibody formulations |
| JP7308191B2 (ja) * | 2017-10-18 | 2023-07-13 | フォーティ セブン, インコーポレイテッド | 抗cd47剤ベースの卵巣癌療法 |
| KR20200030337A (ko) * | 2018-09-12 | 2020-03-20 | 주식회사 녹십자랩셀 | 종양 치료를 위한 항-cd 19 항체 및 자연살해세포를 포함하는 약학적 조합물 |
-
2021
- 2021-06-22 EP EP21734136.1A patent/EP4168449A1/en active Pending
- 2021-06-22 US US17/354,442 patent/US20230014026A1/en active Pending
- 2021-06-22 JP JP2022578711A patent/JP2023530499A/ja active Pending
- 2021-06-22 AU AU2021298106A patent/AU2021298106A1/en active Pending
- 2021-06-22 WO PCT/EP2021/066926 patent/WO2021259902A1/en not_active Ceased
- 2021-06-22 CA CA3181827A patent/CA3181827A1/en active Pending
- 2021-06-22 KR KR1020237002697A patent/KR20230030636A/ko active Pending
- 2021-06-22 TW TW110122819A patent/TW202216193A/zh unknown
- 2021-06-22 CN CN202180044545.0A patent/CN115956088A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU2021298106A1 (en) | 2023-01-19 |
| WO2021259902A1 (en) | 2021-12-30 |
| JP2023530499A (ja) | 2023-07-18 |
| CA3181827A1 (en) | 2021-12-30 |
| EP4168449A1 (en) | 2023-04-26 |
| KR20230030636A (ko) | 2023-03-06 |
| CN115956088A (zh) | 2023-04-11 |
| US20230014026A1 (en) | 2023-01-19 |
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