TW200902028A - Combination of progesterone-receptor antagonist together with an aromatase inhibitor for use in BRCA mediated diseases - Google Patents
Combination of progesterone-receptor antagonist together with an aromatase inhibitor for use in BRCA mediated diseases Download PDFInfo
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- TW200902028A TW200902028A TW097114709A TW97114709A TW200902028A TW 200902028 A TW200902028 A TW 200902028A TW 097114709 A TW097114709 A TW 097114709A TW 97114709 A TW97114709 A TW 97114709A TW 200902028 A TW200902028 A TW 200902028A
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- combination
- receptor antagonist
- aromatase inhibitor
- cancer
- pentafluoroethyl
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Description
200902028 九、發明說明: 【發明所屬之技術領域】 本發明係關於黃體激素受體拮抗劑丨丨p_(4_乙醯基苯 基)-17β-羥基 _ΐ7α-(ι,ι,2,2,2-五氟乙基)-雌-4,9-二烯-3-_ 或其醫藥上可接受之衍生物或類似物以及至少一種芳香酶 .抑制劑之組合以及該組合在預防及治療BRCA1-或BRCA2-調郎之疾病中的用途。 【先前技術】 該黃體激素受體拮抗劑11β_(4-乙醯基苯基)-17β·羥基-17α-(1,1,2,2,2-五氟乙基)_雌-4,9-二烯-3-酮,亦稱作 ΖΚ23021 1 或 ZK-PRA,
對掌性 具有1¾抗結合孕激素活性及十分小的或不具備内分泌作用 (Fuhrmann,U.等人,J. Med. Chem. 2000, 43, 5010-5016) ° BRCA1及BRCA2係所謂的腫瘤抑制劑,即,其正常形式 可抵抗癌症之基因。其達成此目的之一種方式係藉由幫助 細胞修復原本可產生造成癌症之突變的DNA損傷。在 Poole等人,Science,第3 14卷,12/2006中,闡述腫瘤抑 制劑基因BRCA-1-或BRCA2參與黃體激素受體降解,該基 129254.doc 200902028 因之蛋白產物可明顯地控制對乳腺組織之黃體激素生長促 進作用。米非司酮(mifepristone)(—種非特異性抗孕激素) 顯示可阻斷在乳腺中具有滅活形式之齧齒類動物brcai _ 或BRCA2的小鼠中之乳房腫瘤形成。可進一步假定,米非 司酮在其BrCal/p53-缺乏模型中所調節的對乳房腫瘤發生 之抑制可為未來臨床評定抗黃體激素在具有bcrai_或 BRCA2突變之女性中作為潛在化學預防策略提供分子機 制。然而,沒有闡述11β-(4-乙醯基苯基)_17β_羥基_17心 (1’1,2’2,2-五氟乙基)-雌_4,9_二烯_3_酮與芳香酶抑制劑之 組合的活性及反應。 如本文所述芳香酶抑制劑係彼等作為類固醇或非類固醇 之芳香酶抑制劑。
Ro⑽等Λ闡述正常BRCΑ】_或BRCΑ2可抑制黃體激素受 體之作用,但未述及作用機制。 内分泌療法表示一種用於轉移性乳癌之主要的有效且毒 !·生最低的姑息治療。作為不可手術之乳腺癌瘤的標準姑息 ,口療以及在乳腺癌瘤#步治療後之辅助療法,彳使用諸如 非類固醇抗雌激素他莫昔芬等抗雌激素。然而,他莫昔芬 不月“癒礼癌。因& ’經常使用孕激素或芳香酶抑制劑進 行二次治療。在絕經前女性印巢切除術中,他莫昔芬及 LHRH (促黃體激素料激素)類似物達成相當㈣果(H T 'dson等 k,Eur. J. Cancer CIin〇nc〇i,,第队他 頁’ 1988)。儘管他莫昔芬廣泛用於乳癌輔助療法,但 作為化學預防劑卻存在問題,因為已有研究顯示該治療可 129254.doc 200902028 導致子宮癌發病率增高(Ι.Ν· white,Cwc/«叹 20(7).1153-60, 1999; L· Bergman等人 ’ The Lancet,第 356 卷,Sept. 9, 2000)。 選擇性黃體激素受體拮抗劑(亦稱為抗孕激素)表示一種 可對癌症治療具有重大影響的較新穎且具發展前景之治療 劑類別。近來,某些黃體激素受體拮抗劑在彼等擁有黃體 激素受體之癌症的内分泌療法中已佔有重要地位(Nathalie
Chabbert-Buffet等人,Human Reproduction Update,第 11 卷,No, 3, 293-307, 2005)。 此内分泌療法之新策略係基於黃體激素受體拮抗劑在黃 體激素受體呈陽性之人類體外乳癌細胞系中及在小鼠及大 鼠活體内之若干與激素相關之乳房腫瘤中之抗腫瘤活性。 具體而言,曾使用小鼠與激素相關之厘又丁乳腺腫瘤模型以 及DMBA-與MNU-誘導的大鼠乳房腫瘤模型對黃體激素受 體拮抗劑奥那斯酮(onapristone)及米非司酮(RU 486)之抗 腫瘤機理進行研究(M. R. Schneider等人,心r j C7z«. ,第 25 卷,No. 4,第 691-701 頁,1989; Η.
Michna 專尺 ’ Breast Cancer Research and Treatment 14:275-288,1989; H. Michna,/· 第 34 頁,Nos 1-6,第447-453頁,1989)。然而,由於活性較低 及具有與(例如)米非司酮有關的不良副作用,無法建議將 該等化合物作為單獨藥劑用於乳癌治療(D. perrault等人, ·/. C"/?· (9似〇/. 1996 Oct, 14(10),第 2709-2712 頁)。 RU 486可造成嚴重的副作用,此歸因於其強抗糖皮質激 129254.doc 200902028 素活性。禁止長期使用即486。當使用即4 , 題係(例如)在經口投與時生物利用度較差。因此 須以高劑量投與該化合物,此會增加可能的不利副作二、 患者之方便性及順應性而言,經σ投與乃較為理 另外,仍需要不僅在乳癌及其他與激素相關之疾病之仏 療中而且在其預防中均具有活性之組合。 、/σ
已經發現與激素相關之腫瘤生長尤其取決於⑼如^^ 素、黃體激素以及睾酮。舉例而纟,大部分㈣癌瘤 與雌激素以及黃體激素受體有關。因&,黃體激素受體押 抗劑與芳香酶抑㈣之組合在絕經前及絕經後乳房癌. 療法中可為有效的。 另-優點係他莫昔芬藉由與黃體激素拮抗劑組合可抑制 對子呂的增生作用。已證實芳香酶抑制劑阿納曲唾與他莫 昔分之組合不如此等化合物中的一種之單獨療法有效(參 照ATAC Trial resuUs 2〇〇5)我們的發現證實芳香酶抑制 劑之組合對腫瘤生長抑制及存活具有負性加合效應。 【發明内容】 因此,本發明之目標係提供用於預防及治療(尤其是)具 有BRCA1 -或BRCA2突變之女性的乳癌發展及依賴黃體激 素之其他疾病(例如,卵巢癌、子宮内膜癌、結腸直腸 癌、胃癌、子宮内膜異位症、骨髓瘤、肌瘤及腦膜瘤)的 高效工具。 【實施方式】 J29254.doc 200902028 現已驚奇地發現11β_(4_乙醯基苯基)_17卜羥基_17心 (1,1,2,2,2-五氟乙基)_雌_4,9_二烯_3_酮與至少—種芳香酶 抑制劑之組合可用於預防及治療BRCA1-或BRCA2_調節之 礼癌、卵巢癌 '子宮内膜癌、結腸直腸癌、胃癌、子宮内 膜異位症、骨髓瘤、肌瘤及腦膜瘤。 現已進一步最驚奇地發現,當黃體激素受體拮抗劑1ιρ_ (4_乙醯基苯基)_17P-羥基·17α-(1,1,2,2,2-五氟乙基)_ 雌4,9- 一烯-3 - _與芳香酶抑制劑之組合與單獨使用的黃 體激素受體拮抗劑或芳香酶抑制劑之抑制作用相比時,顯 示協同效應。 ‘ 可與化合物ιΐβ_(4_乙醯基苯基)_17ρ_羥基_17〇_ (U,2,2,2-五1乙基)_雌_4,9·二稀_3•酮組合之芳香酶抑制 劑係(例如)氨魯米特、法倔唑、阿納曲唑、來曲唑、伏氯 唑、福美坦、依西美坦及阿他美坦。 ' 進一步發現ηβ-(4·乙醯基苯基)_17β_經基_]7心 (1,1,2,2,2-五氟乙基)_雌_4,9_二浠_3__或其與芳香酶抑制 劑之組合會提高腫瘤細胞凋亡,此係一個防止或治療乳房 癌瘤及其他與激素相關之疾病之特別有利的作用機制,其 中高風險之指標係細胞週期之8_階段中腫瘤細胞之數量增 加。此等其他與激素相關之疾病可包含印巢癌、子宮内^ 癌、骨髓瘤、肺癌、腦膜瘤,即,實質上係因激素受體及: 或與激素相關之途徑之存在而引起或受其影響的疾病。 進而言之,本發明係關於該組合之用途,其用於製備用 於預防及治療具有BRCAMBRCA2突變之女性癌症以好 129254.doc -10- 200902028 療其他與激素相關之病況的藥物 基苯❹•叫 酶抑制劑之組合相較於單獨使用的黃體激素 :長:…彳香酶抑制劑,顯示可有效地抑制此等腫瘤 =態樣中,本發明提供一種預防及治療因时⑶或 RCA2基因突變而需要此治療的哺乳動物(
乳癌及其他與激素相關之疾病的方法,該方法包日括對需)要 其之哺乳動物投與醫藥上有效量之包括黃體激素受體拮抗 劑ηβ-(4-乙醢基苯基)_17卜經基以五氟乙幻_ 雌-:,9-'烯_3_酮或其醫藥上可接受之衍生物或類似物及 至少一種芳香酶抑制劑的組合物。 按照本發明,11β-(4_乙醯基苯基)_17β_羥基_^ (1,1,2,2,2-五氟乙基)_雌_4,9_二烯_3_酮或其醫藥上可接受 之衍生物或類似物可與至少一種芳香酶抑制劑組合使用。 儘管黃體激素受體拮抗劑} lp_(4_乙醯基苯基)_17卜羥 基-17α-(1’1,2,2,2-五氟乙基)_雌_4,9_二稀_3_酮係用於達成 本毛明目的之較佳頁體激素受體拮抗劑,但此並不排除亦 可使用其他適宜黃體激素受體拮抗劑之可能性。 關於本發明組合優於先前技術,特別有利地,該黃體激 素受體拮抗劑11β-(4-乙醯基笨基)_17β_羥基_17^ (1,1,2,2,2-五氟乙基)_雌_4,9·二烯_3_酮僅顯示十分弱的或 不顯示内分泌副作用,例如,雄激素、雌激素或抗糖皮質 激素活性.。 129254.doc 200902028 鑒於包括黃體激素受體拮抗劑11β_(4-乙醯基苯基)_17β_ 經基-17α-(1,1,2,2,2-五氟乙基)-雌-4,9-二烯-3-酮及芳香酶 抑制劑-包括其醫藥上可接受之衍生物或其類似物_之本發 明組合的高生物利用度,可能經口投與該組合。 經口投藥具有改良方便性及患者順應性之優點。作為另 一較佳結果,本發明之組合亦為耐受的。部分激動作用經 常與不期望的副作用相關’舉例而言,在部分抗雌激素他 莫昔芬之情況下,子宮内膜癌之發病率(參見I N. Whhe, 加仏,20(7):1 153-60, 1999; L·. Bergman等人, 以,第 356卷,Sept. 9,2000, 881-887)以及抗糖皮 質激素效應及與先前技術黃體激素受體拮抗劑米非司酮投 藥相關之某些毒性副作用(參見D. perrault等人,j c/z.„ Ο卿/. 1996 Oct, 14(10),第 2709-2712 頁;L.M. Kettel 等 人,心1991 Sep,56(3),第 402-407 頁;X.
Bertagna, 1997,22 Suppl 1 ;第 5 1-55頁)均會增加。 視情況’該黃體激素受體拮抗劑丨ιρ_(4_乙醯基苯 基)-170-羥基-17〇1-(1,1,2,2,2-五氟乙基)_雌_4,9_二烯_3_酮 與芳香酶抑制劑另外可與諸如細胞毒性劑等其他藥理活性 劑組合。 该等藥物/醫藥組合物之製造可依照此項技術中已知方 法實施。可使用經常已知及使用的佐劑以及其他適宜載劑 或稀釋劑。 適宜載劑及佐劑可為在⑺/咖狀) 129254.doc 200902028
Technical Chemistry,第 4卷,(1953),第 1-39 頁,,Journai of Pharmaceutical Sciences,第 52 卷(1963), p. 918ff· H.v.Czetsch-Lindenwald, "Hilfsstoffe fur Pharmazie und angrenzende Gebiete"; Pharm. Ind. 2, 1961, p.72ff; Dr. H.P. Fiedler, Lexikon der Hilfsstoffe fur Pharmazie, Kosmetik und ^grenzende Gebiete, Cantor KG, Aulendorf in Wtimemberg,1971中對藥劑學、化妝品及相關領域所推薦 者。
υ 本發明組合亦包括醫藥組合物,其可藉由製備經口、非 經腸(例如,腹膜腔内、肌内、皮下或經皮)應用之蓋倫製 劑的已知方法來製備。本發明組合亦可植入組織中。 本發明組合亦可以下列形式投與:錠劑、丸劑、糖衣藥 丸 '凝膠膠囊、顆粒、栓劑、埋植劑、可注射無菌水性或 油狀溶液、懸浮劑或乳劑、軟膏、霜劑、凝膠劑、經皮投 與之貼劑、適用於藉由吸入投與之調配物(例如,鼻腔噴 劑)或藉由陰道内(例如,险、音 w 州陰道境)或子宮系統投與之調配物 (臈片、環狀結構)。 對於製備經口投與之醫孳έ人 用於’、之商樂組合物而言,可將如上所述適 ;達成本發明目的之活性劑與經 載劑混合,該等佐劑及載劑可Α °的佐劑及 粉 載劑Τ為(例如)阿拉伯膠、滑石 /卷、糖(例如,甘露糖、 膠、表面活性劑、硬脂酸録、水維素、錄)、明 油衍生物、交聯劑、性賦形劑、石臘 矯味劑(例如香刀月 > 乳化劑、潤滑劑、保存劑及 例如,香精油)。在該醫藥組合物中,該黃體激素 129254.d〇i 200902028 受體拮抗劑與該芳香酶抑制劑可分散於微粒(例如,奈米 顆粒)組合物中。 為了進-步增強該等活性劑之生物利用度,如上文所述 適用於達成本發明目的之活性劑亦可按照在 pct/EP95/G2656中所揭示的方法藉由與α_、卜或^環糊精 或其衍生物反應而調配成環糊精籠形包合物。 •對㈣㈣投與而言,將如±域料心達成本發明 目的之活性藥劑溶於或懸浮於生理上可接受之稀釋劑中, ° 2如:具有或不具有助溶劑、表面活性劑、分散劑或乳化 之油。作為油,可使用(例如且不限於)撤視油、花生 /、棉籽油、大豆油、f麻油及芝麻油。 製=Γ,’本發明之醫藥組合物亦可藉由儲積注射或埋植 ^又/、以便持續地遞送該(等)活性劑。 埋植劑可包括(例如)可生物降解# I人& $ ^ ^ (例如,聚錢橡膠)作為惰性材Γ 成聚石夕氧 J劑對於經皮施藥而言’亦可將該(等)活性劑調配成黏附 投與。本發明之組合尤其適用於經 較佳投與方式為經 口投與。 本發明之組人7 4 , 酿基苯基),口,=7施用黃體激素受體括抗劑1㈣-乙 w 及 ,1,2,2,2^ 基)秦 4,9_ 二 叩(4-乙酿基笨制劑或分開施用黃體激素受體括抗劑 雄-4,9n心二T 基-17α_αι,2,2,2·五氣乙基)- 、方香酶抑制劑來投與,舉例而言,該 129254.doc 200902028 黃體激素受體11β_(4_乙醢基笨基)_17β_經基_17心 射(叫投與且該芳香酶抑制劑可經口投與或反之亦然。 擬投與的組合活性藥劑之量(”醫藥有效量”)可在寬範圍 内變化且視擬治療的病況及投藥模式而定。該等量可涵蓋 任一對期望治療有效之量。組合活性劑之"醫藥有效量"可 由熟習此項技術者確定.。
文所述汽體激素嗳體拮抗劑丨ΐρ_(4_乙醯基苯 土)7β罗工基-How五I乙基)_Κ9_二稀•嗣 與芳香酶抑制劑之重量比率可在寬範圍内變化。該等可以 等量存在或一種組份可以較其他組份為多之量存在。較佳 地,投與包含n 200 mg芳香酶抑制劑及0」至剛叫黃 體激素受體拮抗劑lip_(4_乙醯基苯基)傅經基抓 (1,1,2’2,2-五氟乙基)_雌_4,9_二烯_3_酮之單位劑量,更佳 地,投與包含】0至150 mg芳香酶抑制劑及1〇至15〇 mg黃體 激素受體拮抗劑11β-(4-乙醯基苯基)_17卜羥基_ΐ7α_ (1,1,2,2,2-五氣乙基)_雌_4,9_二烯_3__之單位劑量。在特 殊h况下,可投與多達200 mg的黃體激素受體拮抗劑η卜 (4-乙醯基苯基)-17β-羥基]五氟乙基)_ 雌-4,9-—稀-3-酮。該芳香酶抑制劑與該黃體激素受體枯 抗劑11β-(4-乙醯基苯基)_17p_經基_l7a_(u,2,2,2_五氟乙 基)-雌-4,9-二烯_3-酮較佳以自1〇〇:1至1:1〇〇之比率存在。 更佳地,該等以自4:1至之比率存在。 該黃體激素受體拮抗劑Up_(4_乙醯基苯基)_17卜羥 129254.doc 200902028 基-17α-(1,1,2,2,2-五氟乙基)_雖_4,9_二歸_3_綱與該(等)芳 香酶抑制劑可—起或分開、同時及/或依序投與。較佳 地,該等可組合成—個單位劑量投與。倘若該等依序投 與,則較佳應首先投與黃體激素受體拮抗劑ιΐβ·(4_乙酿美 苯基)-17β-經基-17α_(1山2,2,2_五氣乙基)-雖妙二稀^ 酮,隨後投與如上述定義之芳香酶抑制劑。 黃體激素受體拮抗劑ηβ_(4_乙醯基苯基)_17卜羥基— I、 (1,1,2,2,2-五氧乙基)_雌_4,9_二烯_3_綱與芳香酶抑制劑或 &等組份之醫藥上可接受之衍生物或類似物的組合在一組 與激素相關之乳癌模型中可發揮十分強大的腫瘤抑制作用 (參照實例1)。當與單獨使用此等化合物所達成抑制作用相 比時’該抑制作用具有協同性。 (例如,若處理腫瘤細胞時,可藉由)阻斷階段進展 而誘導細胞社之藥物(例如,本發明各態樣之組合)即具 有應用於治療及預防許多病況之潛力。 $限於#-理冑,實射所提供結果顯示本發明之黃體 ;激素受體拮抗劑Ηβ-(4-乙醯基苯基)_17β_經基…心 0,1,2,2,2-五敦乙基)_雌-4,9_二稀_3,與芳香酶抑制劑之 .組合在測試模型中的主要抗腫瘤作用機制係雌激素受體及 /或黃體激素受體調節之抗增殖作用藉由誘導與終端細胞 死亡相關之終端分化而直接作用在腫瘤細胞階段。以此種 方式,本發明之組合似乎能夠在孕留綱受體呈陽性或雄教 素受體呈陽性之腫瘤内消除惡性腫瘤細財固有的終端分 化作用中内部阻斷作用。 129254.doc -16- 200902028 使用細胞培養物揭示該黃體激素受體在brcai_或 BRCA2活性被敲低時降解減少。因此,黃體激素對黃體激 素受體之轉錄活性會更持久且亦會更強。 吾人證實吾人可#由用本發明化合物及組合進行預防性 治療來減少在BRCA1 -或BRCA2敲低細胞中之加速pR信號 傳導。此會導致此等乳腺細胞增殖減少。 失去PR轉錄控制可用於解釋為什麼腫瘤會特定出現於特 定取決於PR之乳腺、卵巢及子宮内膜meningi〇器官中,即 使BRCA1-或BRCA2基因在整個個體之細胞中發生突變 時。 具有類似於人類BRCA1-或BRCA2突變且其中p53基因已 經被剔除之雌性小鼠的乳房組織顯示細胞增殖及黃體激素 受體表現增加且形成乳房癌。然而,經本發明化合物或者 組合治療之小鼠不具有腫瘤。 本發明化合物或者組合之作用並不僅限於腫瘤組織亦可 用於毗鄰具有BRCA1-或BRCA2突變之<人類〉乳腺腫瘤且 與正常乳腺組織相比亦顯示黃體激素表現升高的組織。 本發明進一步闡明於實例中。然而,不應將下列實例理 解為限制本發明。 實例1 黃體激素受體拮抗劑乙醯基苯基)-17β-羥基_17〇(_ (1,1,2,2,2-五氟乙基)-雌-4,9-二烯-3-酮(乙1<:230211)與芳香 酶抑制劑之組合可抑制BRAC1及BRCA2敲低之乳腺細胞 的生長 129254.doc -17· 200902028 使用芳香酶基因穩定地轉染MCF-7及T47D乳腺細胞。藉 助雄固烯二酮刺激使此等細胞生長。使用siRNA敲低 BRCA1及BRCA2基因處理此等細胞。比較未經轉染及經模 擬轉染細胞之細胞生長。 在第二步中,使用黃體激素及/或雄固烯二酮刺激細 胞。於黃體激素存在下,在BRCA1及BRCA1敲低(ko)之細 胞中可見增殖增加。使用單獨的11β_(4_乙醯基苯基)17β_ 备基-17〇1-(1,1,2,2,2-五氟乙基)-雕-4,9-二烯-3-_或與芳香 酶抑制劑之組合進行複合治療能夠拮抗BRCA1敲低之作 用。進一步研究對黃體激素受體蛋白表現之作用。藉由使 用siRNA敲低BRCA1,發現可能受黃體激素受體拮抗劑 11β-(4-乙醯基苯基)_ΐ7β-經基_ΐ7α-(1,1,2,2,2-五氟乙基)_ 雌-4,9-二烯-3-酮拮抗之黃體激素受體的穩定性增加。 因此’結果顯示使用黃體激素受體拮抗劑u β_(4_乙醯基 苯基)-17β-羥基- Ι7α-(1,1,2,2,2-五氟乙基)_雌 _4,9-二烯-3- 酮與芳香酶抑制劑之組合可能會強效抑制BRCA丨敲低細胞 的生長。 實例2 小鼠之MXT乳癌模型 黃想激素受想括抗劑11β_(4_乙斑基苯基)_17p經 基-17〇1(1,1,2,2,2-五氟乙基)-雌_4,9-二稀-3-_與芳香酶抑 制劑來曲咕之組合 將自供體小鼠獲得的MXT乳房腫瘤碎片(直徑約2毫米) 植入雌性BDF1小鼠(Charles River)腹股溝區域内。當腫瘤 129254.doc •18- 200902028 大小為25 mm2時,使用下列開始進行治療: 1) 對照, 2) 黃體激素受體拮抗劑11β-(4-乙醯基苯基)_ΐ7β_羥 基-17(1(1,1,2,2,2-五氟乙基)-雌-4,9-二烯-3-酮(乙尺230211), 3) 來曲嗤, 4) 黃體激素受體拮抗劑11β-(4-乙醯基苯基)_17β_羥 基-17α(1,1,2,2,2-五氟乙基)-雌-4,9-二烯-3-酮與來曲唑 之組合, 其中母日經皮下或經口投與所有化合物。 該等結果示於圖1中。 腫瘤面積藉由卡尺量測來測定。腫瘤重量在實驗結束時 確定。 與對照之迅速生長相比’本發明之黃體激素受體拮抗劑 11β-(4-乙醯基苯基)_17卜羥基_17〇1(1,1,2,2,2_五氟乙基)_ 雌-4,9-二烯-3-酮與來曲唑之組合可發揮明顯優於單獨來 曲唑之抗腫瘤作用。 證實本發明之黃體激素受體拮抗劑11 β-(4-乙醯基苯 基)-17β-羥基-Ι7α-(1,1,2,2,2·五氟乙基)-雌-4,9-二烯-3-酮 與來曲。坐之組合可強效抑制ΜΧΤ小鼠乳房腫瘤的生長。 實例3 黃艘激素受艘拮抗劑lip_(4_乙醯基苯基)_17ρ_羥基_17心 (1,1,2,2,2-五氟乙基)_雌_4,9_二烯_3酮舆芳香酶抑制劑之 組合可抑制BRAC1及BRCA2敲低之乳腺細胞的生長 使用芳香酶基因穩定地轉染MCF7&T47E^L腺細胞。藉 129254.doc 200902028 助活體内雄固烯二酮刺激使此等細胞生長。使用siRNA敲 低BRCA1及BRCA2基因穩定地轉染此等細胞。比較未經轉 染及經模擬轉染細胞之活體内細胞生長。在第二步中,將 細胞植入免疫缺陷裸鼠中並用黃體激素及/或雄固烯二酮 刺激之。於黃體激素存在下,在BrcA 1敲低(ko)之細胞中 可見增殖增加。使用單獨的1 ip_(4_乙醯基苯基)_17β_羥 基-17〇1-(1,1,2,2,2-五氟乙基)_雌_4,9_二烯_3_酮或與芳香酶 抑制劑之組合進行複合治療能夠拮抗BRCΑ丨敲低之作用。 進一步研究對黃體激素受體蛋白表現之作用。藉由使用 SiRNA敲低BRCA1,發現可能受黃體激素受體拮抗劑u卜 (4-乙酿基苯基羥基-五氟乙基)_ 雖-4,9-二烯_3_酮拮抗之黃體激素受體的穩定性增加。 因此’結果顯示根據本發明使用黃體激素受體拮抗劑 11β_(4_乙醯基苯基Μ7β-羥基-17α-(1,1,2,2,2-五氟乙基卜 ’ 稀3 - _與芳香酶抑制劑之組合可強效抑制 BRCA1敲低細胞的生長。 【圖式簡單說明】 圖1顯示小鼠之ΜΧΤ乳癌模型的效應。 129254.doc -20-
Claims (1)
- 200902028 十、申請專利範圍: 1· 一種包括黃體激素受體拮抗劑11β_(4_乙醯基苯基)_ΐ7β 羥基-17〇[-(1,1,2,2,2-五氟乙基)_雌_4,9-二烯-3-酮或其醫 藥上可接受之衍生物或類似物以及至少一種芳香酶抑制 劑之醫藥組合,其用於預防及治療BRCA1_4BRCA2•調 節之乳癌。2.如睛求項1之醫藥組合,其中該芳香酶抑制劑係氨魯米 特(aminoglutethimide)、法倔唑(fadr〇z〇ie)、阿納曲唑 (anastrozole)、來曲嗤(letr〇z〇le)、伏氣嗤(v〇r_⑷福 美坦(f〇rmeStane)、依西美坦(exemestane)及阿他美坦 (atamestane)。 3. 如請求们至2之醫藥組合,其中該黃體激素受體拮抗劑 與該芳香酶抑制劑之重量比率為1:1〇〇至ι〇〇:ι。 4. 如請求項1至3之醫藥組合,其中該黃體激素受體拮抗劑 與該方香酶抑制劑之重量比率為1:4至4:1。 5. 如明求項1至3之醫藥組合’其中一個單位劑量中之該黃 體激素受體拮抗劑含量為m〇〇毫克且—個單位劑量 6. 中之該芳香酶抑制劑含量為〇 1至2〇〇毫克。 如請求項1至3之醫藥組合,i中一 具中一個早位劑量中之該黃 體激素受體拮抗劑含量為1〇 ~ 15〇毫克且一個單位劑量 中之該芳香酶抑制劑含量為1〇至15〇毫克。 如請求項1至6之醫藥組合,直 « ,、中6亥汽體激素焚體拮抗劑 及该方香酶抑制劑之投藥 韦小式為.錠劑、丸劑、糖衣藥 丸、凝膠膠囊、顆粒、栓劑、 J埋植劑、可注射之無菌水 129254.doc 200902028 性或油性溶液、懸浮劑、 經皮投輿之目j:森丨*、*..體激素受體拮抗劑11β_(4_ (112,2,2-五氟乙基)_雌_4,9 藉由吸入投與之調配物。 8. 藥理活性劑。 乳劑、軟膏、霜劑、凝膠劑、 ’其特徵在於該組合包括該黃 -乙醯基-苯基)_17β-經基·ΐ7α-9-二烯-3-酮、芳香酶抑制劑及 其中該藥理活性劑係細胞毒性 9.如請求項8之醫藥組合,其 1 〇. 士 π求項1至9之醫藥組合,其用於經口投藥。 11· 一種如請求項丨至⑺之組合的用途,其係作為藥物用於 預防或治療BRCA1-或BRCA2-調節之乳癌、卵巢癌、子 宮内膜癌、胃癌、結腸直腸癌、子宮内膜異位症、骨趙 瘤、肌瘤及腦膜瘤。 12_ —種如請求項丨至丨丨之組合的用途,其用於製造用於治 療BRCA1-或BRCA2-調節之乳癌、卵巢癌、子宮内膜 癌、胃癌、結腸直腸癌、子宮内膜異位症、骨髓瘤、肌 瘤及腦膜瘤之藥物。 129254.doc
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