TW201609111A - 人參皂苷m1用於抑制腎纖維化之用途 - Google Patents
人參皂苷m1用於抑制腎纖維化之用途 Download PDFInfo
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Abstract
本發明提供一種在有需要的個體抑制腎纖維化的方法。
Description
本發明關於人參皂苷M1用於抑制腎纖維化之新穎用途,特別是抑制間質性纖維化。
腎纖維化是腎臟疾病的最終階段。造成腎纖維化的原因包括輸尿管阻塞(ureteral obstruction,UO)。
輸尿管阻塞是泌尿科醫師最常遇到的問題。輸尿管阻塞會造成在輸尿管中尿液流動的阻抗。最常見的阻塞發生在輸尿管腎盂接合處。較廣義的「阻塞性尿路病變」乙詞可用來表示任何發生在腎盂與尿道之間的尿液流動阻塞,其導致逐漸形成腎盂積水以及相關的腎損傷。尿道狹窄與良性前列腺肥大是這方面的例子。據報告,單側輸尿管阻塞(UUO)的發生率在成人中為1/1,000。輸尿管結石為最常見的原因,且急性阻塞通常伴隨明顯的腎絞痛為主要的症狀。參見,例如,Docherty等人,抑制腎小管細胞凋亡保護對抗輸尿管阻塞後之腎損傷及纖維化發展的證據,Am J Physiol Renal Physiol.2006 Jan;290(1):F4-13。
在發生單側輸尿管阻塞(UUO)初期,間質組織由單核細胞所滲入,其典型地受到活化(classically activated)轉變為巨噬細胞,而釋放細胞激
素,如TGF-β1與腫瘤壞死因子α(tumor necrosis factor-α,TNF-α)。接著,TGFβ1促進腎小管上皮細胞的表現型反應,而進入細胞凋亡(造成腎小管萎縮),或進入上皮間質轉化作用(epithelial-mesenchymal transition,EMT),而變成纖維母細胞,其可遷移至間質組織。血管收縮素II(Angiotensin II,ANG II),由單核細胞的活化所產生,可刺激核因子κB(nuclear factor-κB,NF-κB)的產生,其引致更多巨噬細胞的聚集,以及產生活性含氧物(reactive oxygen species,ROS),其加重了腎小管的損傷。相反地,替代性活化(alternatively activated)的巨噬細胞則增加腎小管細胞的存活與增殖。內皮細胞可以進行內皮間質轉換作用(endothelial-mesenchymal transition,EndMT)或細胞凋亡,其造成毛細管損失與續發性腎缺血與缺氧。周邊細胞與浸潤性造血幹細胞亦可分化為纖維母細胞。在細胞激素的刺激下,例如由巨噬細胞或其它細胞產生的TGF-β1,纖維母細胞合成壓力纖維,且進一步分化而變成肌纖維母細胞。該肌纖維母細胞可收縮且增加胞外基質(extracellular matrix,ECM)的沈積,導致惡化型間質纖維化。此過程最終導致惡化型腎纖維化以及不可逆的腎功能衰竭。參見,例如,Chevalier等人,以輸尿管阻塞作為腎間質纖維化與阻塞性腎病變的模型,Kidney Int.2009 Jun;75(11):1145-52。
人蔘皂苷是人蔘之主要成分,已知具有多種藥理學活性,例如,抗腫瘤、抗糖尿病、抗疲勞、抗過敏及抗氧化活性。人蔘皂苷類具有相同的基礎結構,其係由具17個碳原子排成四個環的性脂烷類固醇(gonane steroid nucleus)核心組成。人蔘皂苷會在體內代謝,近來許多研究指出,在體內易吸收而作為活性成分的是人蔘皂苷代謝物而非天然存在之人蔘皂苷。其中,人蔘皂苷M1已知為原人蔘二醇型(protopanaxadiol-type)人蔘皂苷代謝物之一,其
係經由人體腸道細菌之絞股藍皂苷(gypenoside)途徑生成。迄今,尚未有前案報導人蔘皂苷M1於腎纖維化的治療功效。
在本發明中,不可預期地發現人參皂苷M1可有效抑制腎纖維化。因此,本發明提供一種治療或預防個體之腎纖維化的新穎方法。
具體而言,本發明提供一種在有需要的個體抑制腎纖維化的方法,包含對該個體投予治療有效量的人參皂苷M1。
在部分具體實施例中,該個體具有阻塞性腎病變。
在部分具體實施例中,本發明的方法能有效降低或緩解一或多種病徵或症狀,包括但不限於,單核白血球發炎、腎小管擴張、腎小管萎縮、腎小管上皮細胞的增殖、纖維母細胞或肌纖維母細胞的活化,以及膠原蛋白(例如第III型或第IV型)的沈積,具體而言是在該個體的腎小管間質腔室中。
在部分具體實施例中,本發明的方法可有效降低或緩解在個體的腎間質中的單核血球發炎或纖維化。
在部分具體實施例中,該人參皂苷M1係由非經腸道或腸道內途徑投予。
在部分具體實施例中,該人參皂苷M1係於腎纖維化發生之前或發生時投予。
在部分具體實施例中,該人參皂苷M1係於腎纖維化發生之後投予。
本發明之一或多個具體實施例之詳述係列於下方之說明中。本發明之其他特徵或優勢可由下列數個具體實施例之詳細說明及所附之主張而更臻清楚。
欲說明本發明,圖式具體實施例如下。然而,應理解到,本發明未侷限於所示之較佳具體實施例。在圖式中:圖1顯示UUO動物模式的建立,包括(A)實驗流程、(B)UUO動物模式的手術流程,其中左邊是輸尿管結紮後的疾病腎臟,以及右邊是無輸尿管結紮的正常腎臟。
圖2顯示以蘇木精及伊紅(hematoxylin and eosin,H&E)染色進行之腎臟組織病理學評估,其中箭頭指示處為擴張的腎小管。(A)腎臟組織病理學評估的H&E染色。#表示擴張的腎小管,星狀表示單核細胞,以及*表示萎縮的腎小管。病理學的原始放大倍數為400倍。(B)半定量顯示腎小管間質損傷評分(tubulointerstitialscore,TIS)。白色、黑色及灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。***表示p<0.005。
圖3顯示腎細胞凋亡與增殖的評估,包括(A)以免疫組織化學染色偵測PCNA,其中箭頭指示處為陽性染色細胞,以及(B)半定量結果。原始放大倍數為400倍。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。***表示p<0.005。
圖4顯示纖維化表現評估,包括(A)以Masson氏毛狀體染色分析在腎組織中纖維化的膠原蛋白的表現,(B)以免疫組織化學染色分析在腎組織中平滑肌α肌動蛋白(α-SMA)的表現,(C)以免疫組織化學染色分析在腎組織中平滑
膠原蛋白第III型的表現,(D)以免疫組織化學染色分析在腎組織中平滑膠原蛋白第IV型的表現,其中箭頭指示處為陽性染色細胞,以及(E)半定量結果。原始放大倍數為400倍。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。*表示p<0.05,**表示p<0.01,***表示p<0.005。
圖5顯示(A)以免疫組織化學染色分析在腎組織中NF-κB的表現,其中箭頭指示處為陽性染色細胞,以及(B)半定量結果。原始放大倍數為400倍。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。***表示p<0.005。
圖6顯示在腎組織中單核白血球浸潤,包括以免疫組織化學染色偵測(A)F4/80+單核細胞/巨噬細胞以及(B)CD3+ T細胞,其中箭頭指示處為陽性染色細胞,以及(C)半定量結果。原始放大倍數為400倍。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。***表示p<0.005。
圖7顯示LCHK168抑制腎盂尿中的MCP-1、TNF-α及IL-1β的表現水平。(A)MCP-1、(B)TNF-α及(C)IL-1β以ELISA偵測尿液樣本。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。*表示p<0.05,**表示p<0.01,***表示p<0.005。
圖8顯示細胞免疫力的活化評估,包括以流式細胞儀偵測(A)CD3+ CD69+ T細胞以及(B)CD19+ CD69+ T細胞。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。
圖9顯示造血幹細胞的活化評估,包括以流式細胞儀偵測(A)CD34+幹細胞以及(B)Sca-1+造血幹細胞。白色、黑色與灰色柱狀分別代表正常對照組小鼠、疾病對照組小鼠,以及LCHK168+UUO小鼠。
除非另有定義,本文所使用的技術性及科學性術語具有本發明領域之技術人員所能常規理解的意義。除非另有指明,本文所使用的下列術語具有賦予其之涵義。
本文所使用的冠詞「一」與「一者」是指一個或多於一個(亦即,至少一者)之該冠詞語法對象。舉例而言,「一元件」是指一個元件或多於一個之元件。
在本發明中,意外地發現人參皂苷M1可有效抑制腎纖維化。特別是,發現在小鼠UUO模型中,腎損傷/發炎降低,且腎纖維化的惡化受到抑制或減輕。
對嚙齒科動物進行手術干預的UUO模型數十年來已被用來作為UO的高通量實驗模型。此模型不會併發高血壓、蛋白尿或高血脂症,且不涉及任何明顯的免疫或毒性腎衰竭。取決於阻塞時間的長短,UUO可以模擬不同階段的阻塞性腎病變,其最終導致腎小管間質纖維化。該動物的壽命不會受到損害,因為對側的腎臟仍具有功能,或甚至因為補償功能與解剖肥大之故而增加功能。此模型的其它優點包括,腎纖維化的進展為高度可預期且可重複,並在相對短的期間(7-14天)內導致顯著纖維化及腎元損失。參見,例如,Eddy等人,研究小鼠模型中慢性腎臟疾病的機制,Pediatr Nephrol.2012 Aug;
27(8):1233-47;以及Grande MT與López-Novoa JM,在阻塞性腎病變中的纖維母細胞的活化與肌纖維母細胞的產生,Nat Rev Nephrol.2009 Jun;5(6):319-28。
以下的實施例與數據顯示出人參皂苷M1的不可預期效果,包括(1)在腎間質組織中降低細胞凋亡與腎小管損傷,(2)在腎間質組織中預防纖維化與膠原蛋白沈積,(3)降低NF-κB的活化,(4)預防腎臟巨噬細胞與T細胞之浸潤,以及(5)維持造血幹細胞的正常功能與全身性細胞免疫力。
因此,本發明提供一種在有需要的個體治療或預防腎纖維化的方法,包含對該個體投予治療有效量的人參皂苷M1。
人蔘皂苷M1,即20-β-D-吡喃葡萄糖基原人蔘二醇(20-O-β-D-glucopyranosyl-20(s)-protopanaxadiol),為本領域習知之皂素代謝物之一。人蔘皂苷M1之化學結構如下:
人蔘皂苷M1已知為原人蔘二醇型人蔘皂苷之代謝物之一,其係經由人體腸道細菌之絞股藍皂苷途徑產生。人體服用人蔘後,可於血液或尿液中發現人蔘皂苷M1。人蔘皂苷M1可製備自人蔘植物,其係以本領域習知方法如真菌發酵方式進行,例如,中華民國發明專利申請案第094116005號(I280982)及
美國專利第7,932,057號,其全部內容在此列入本案以作為參考資料。在部分具體實施例中,用於製備人蔘皂苷M1的人蔘植物包括五加科(Araliaceae)、人蔘屬(Panax genus),如人蔘(P.ginseng)及假人蔘(P.pseudo-ginseng)(亦稱作三七)。一般而言,人蔘皂苷M1之製備方法包括步驟:(a)提供人蔘植物材料(如葉或莖)的粉末;(b)提供真菌,以進行人蔘植物材料之發酵,其中發酵溫度範圍為20至50℃、發酵濕度範圍為70至100%、pH值範圍為4.0至6.0、及發酵時間範圍為5至15天;(c)萃取及收集發酵產物;以及(d)自發酵產物分離20-β-D-吡喃葡萄糖基原人蔘二醇。
在本發明中,當以「分離」或「純化」描述人蔘皂苷M1時,其應理解為非絕對的分離或純化,而是相對的分離或純化。舉例而言,純化的人蔘皂苷M1是指相較於其天然存在形式而言,純度更高。在一具體實施例中,含有純化的人蔘皂苷M1的製劑可包含的人蔘皂苷M1之含量為總製劑的50%以上、60%以上、70%以上、80%以上、90%以上、或100%(w/w)。應理解的是,當以某數字顯示比例或劑量時,該數字通常包括其10%上下之範圍,或更特別地,包括其5%上下之範圍。
本發明提供一種抑制腎纖維化之方法,包括將有效量之人蔘皂苷M1投用於有需要此治療的個體。亦提供的是人蔘皂苷M1用於製造藥物之用途,其係供於有需要的個體抑制腎纖維化。本發明的藥物有效於降低或緩解個體的一或多種症狀或病況,包括但不限於,單核白血球發炎、腎小管擴張、腎小管萎縮、腎小管上皮細胞的增殖、纖維母細胞或肌纖維母細胞的活化以及膠原蛋白(第III型或第IV型)的沈積,特別是在腎小管間質腔室。特定而言,本發明的藥物有效於降低或緩解在個體的腎間質中的單核白血球發炎或纖維化。
本文所使用的「個人」或「個體」等詞包括人類或非人類動物,例如陪伴動物(如狗、貓等)、農場動物(如牛、綿羊、豬、馬等)、或實驗動物(如大鼠、小鼠、天竺鼠等)。
本文所使用的「治療」乙詞是指施加或投予包括一或多種活性藥劑的組合物至具有疾病、疾病之症狀或病況、或疾病惡化之個體,其目的在於治療、治癒、緩解、減輕、改變、補救、改善、改進、或影響疾病、疾病之症狀或病況、疾病引發之失能、或疾病惡化。如本文所使用,「預防」乙詞意指施用或投予包括一或多種活性劑的組合物至易感受或傾向於疾病或其症狀或病症的個體內,而因此涉及預防該疾病或其症狀或病症或其病因的發生。
本文所使用的「有效量」乙詞是指於接受處理之個體產生想要的醫療功效之活性成分的量。例如,用於治療或預防腎纖維化的有效量為可以抑制、改善、緩解、降低或預防一或多種症狀或病況,例如,單核白血球發炎、腎小管擴張、腎小管萎縮、腎小管上皮細胞的增殖、纖維母細胞或肌纖維母細胞的活化以及膠原蛋白(第III型或第IV型)的沈積,特別是在腎小管間質腔室。該症狀可使用本領域習知方法基於不同疾病進展相關指數予以決定與評估,例如,藉由透過染色分析腎切片。該有效量可根據不同理由而改變,例如,投予途徑與頻率、接受該藥物的個體的體重與物種,以及投予的目的。本領域技藝者基於本文所揭露者、已建立的方法,以及其經驗來決定在個案中的劑量。例如,在部分具體實施例中,本發明所使用的人蔘皂苷M1口服劑量為每日10至1,000mg/kg。在部分實例中,本發明所使用的人蔘皂苷M1口服劑量為每日100至300mg/kg、每日50至150mg/kg、每日25至100mg/kg、每日10至50mg/kg、或每日5至30mg/kg。此外,在本發明之部分具體實施例中,人蔘皂苷M1係週期性
投予一段時間,例如,每日投予達至少15天、一個月或二個月或更久。
依據本發明,人蔘皂苷M1可作為活性成分,以治療或預防腎纖維化。在一具體實施例中,針對輸送及吸收目的,有效量之活性成分可與醫藥上可接受載體配製成適當形式之醫藥組合物。依據投予模式,本發明之醫藥組合物較佳為包含約0.1%重至約100%重之活性成分,其中百分比重係以組合物之總重量為基準計算。
本文所使用的「醫藥上可接受」乙詞是指載體與組合物之活性成分相容,且較佳為可穩定該活性成分且對於接受治療之個體具安全性。該載體可為活性成分之稀釋劑、載劑、賦形劑、或介質。適用之賦形劑的一些實例包括乳糖、葡萄糖、蔗糖、山梨糖醇、甘露糖醇、澱粉、阿拉伯膠、磷酸鈣、藻酸鹽、黃蓍膠、明膠、矽酸鈣、微晶纖維素、聚乙烯吡咯烷酮、纖維素、無菌水、糖漿、及甲基纖維素。本組合物可額外包含潤滑劑如滑石、硬脂酸鎂、及礦物油;潤濕劑;乳化劑及懸浮劑;防腐劑如甲基及丙基羥基苯甲酸酯;增甜劑;以及調味劑。在投予至病患後,本發明之組合物可提供活性成分快速、持續、或緩慢釋放之效果。
依據本發明,該組合物之形式可為片劑、丸劑、粉劑、錠劑、囊劑、扁囊劑、酏劑、懸劑、乳液、溶液、糖漿、軟與硬明膠膠囊、栓劑、無菌注射液、及包裝粉劑。
本發明之組合物可經由任何生理上可接受途徑輸送,例如,口服、非口服(如肌內、靜脈、皮下、及腹腔)、經皮、栓劑、及鼻內方法。關於非口服投予,較佳為使用無菌水溶液,其可包含其他物質,如足以使溶液與血液等張的鹽類或葡萄糖。水溶液可視需求適當地經緩衝(較佳為具pH值3至
9)。本領域之技術人員可由習知之標準藥理學技術於無菌條件下製備適合的非口服組合物。
依據本發明,含有以人蔘皂苷M1作為活性成分的人蔘皂苷M1或組合物可用於治療或預防罹患腎纖維化之個體。特定而言,含有以人蔘皂苷M1作為活性成分的人蔘皂苷M1或組合物可投予至罹患腎纖維化之個體或具有罹患腎纖維化風險之個體,以預防疾病發生或改善症狀或延緩症狀惡化。特定而言,人蔘皂苷M1可在發生腎纖維化時或之前投用,或在發生腎纖維化之後投用。
此外,依據本發明,含有以人蔘皂苷M1作為活性成分的人蔘皂苷M1或組合物可用於結合現有的療法或藥劑,如醫藥治療,包括但不限於,皮質類固醇(如腎上腺皮質酮)、非類固醇消炎藥物(NSAIDs)、細胞毒性藥物(如環磷醯胺、氯芥苯丁酸、及硫唑嘌呤)、免疫抑制劑(如環孢素及黴酚酸酯)、及血管擴張劑(如血管緊張素轉化酶抑制劑(ACE抑制劑)。在一具體實施例中,用於結合之藥劑或療法可同時(並行)或依序使用。當結合藥劑使用時,可將藥劑混入相同配方或分別使用不同配方,如個別的膠囊、丸劑、片劑、及注射劑。
本發明係進一步以下列實例說明,其目的旨在闡述而非侷限。
實施例
1.材料及方法
1.1動物模型與實驗方法
UUO(單側輸尿管阻塞(Unilateral ureteral obstruction,UUO)動物模型
雄性8週齡C57BL/6小鼠係購自國家實驗室動物育種與研究中心
(台北,台灣),且飼養於國防醫學中心的動物中心(台北,台灣)。所有動物實驗的進行皆獲得台灣國防醫學中心的機構動物照顧與使用委員會的核准,且符合國家衛生研究院實驗動物照護及使用指南。
小鼠首先以戊巴比妥鈉(50mg/kg,腹腔注射)麻醉。在小鼠左側切開一開口,暴露出左側輸尿管,以6-0絲縫線捆綁於二個點上,並切斷二個捆綁點之間的輸尿管。最後,縫合圍腸膜與皮膚。依照所有UUO程序的步驟,除了捆綁與切除輸尿管的步驟之外,以進行假手術作為對照組(Xiao等人,腺苷A2A受體:在阻塞性腎病變中調節腎間質纖維化的目標,PLoS One.2013 Apr 9;8(4):e60173)。
簡言之,所有小鼠均接受術前止痛(皮下注射50mg/kg丁基原啡因(Temgesic,Shering-Plough)),右側輸尿管隨後在2.0%異氟醚誘導麻醉下,透過一個小的腹部切口以6.0絲捆綁。腹部以二層縫合關閉,且小鼠於28℃下於通風櫥內進行術後恢復12小時。小鼠在術後7或14天進行犧牲(Pulskens等人,Nlrp3預防早期腎間質水腫以及在單側輸尿管阻塞中的血管通透性,PLoS One.2014 Jan 15;9(1):e85775)。
1.2人參皂苷M1與投予
人蔘皂苷M1,即20-β-D-吡喃葡萄糖基原人蔘二醇(20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol,以下稱為LCHK168),係以本領域習知之方法製備,如中華民國專利申請案第094116005號(I280982)及美國專利第7,932,057號所揭示者。LCHK168係溶解於3%cremophore中(Sigma-Aldrich公司)。在UUO手術前一天開始,以腹腔注射方式每天給予小鼠日劑量的LCHK168(30mg/kg)直到犧牲為止。
1.3腎組織病理學
石蠟包埋的腎臟組織進行切片,並使用標準程序以Masson氏三色
染劑以及蘇木精及伊紅(hematoxylin and eosin,H&E)染色。針對組織病理學,該組織以10%緩衝的甲醛固定,並包埋於石蠟中,然後製備切片(厚度3μm)並以蘇木精及伊紅(H&E)染色。
所有的切片在固定後檢視。半定量方法是根據腎小管間質上的發炎及纖維化的程度進行,隨機選擇20個視野進行評分。0表示正常形態學,1表示有影響的區域少於10%,2表示有影響的區域約10至30%,3表示有影響的區域約30至50%,以及4表示有影響的區域大於50%,
1.4免疫組織化學(Immunohistochemistry,IHC)與細胞凋亡的偵測
針對IHC,甲醛固定且石蠟包埋的組織切片於4℃下以抗PCNA抗體(Santa Cruz生物科技公司,Santa Cruz,加州,美國)、CD3抗體(DAKO公司,Glostrup,丹麥)、α-SMA抗體(Thermo Fisher Scietific公司,Waltham,麻州,美國)、膠原蛋白第III型抗體、膠原蛋白第IV型抗體(兩者皆來自SouthernBiotech公司,Birmingham,阿拉巴馬州,美國)、F4/80抗體(單核細胞/巨噬細胞;Serotec公司,Raleigh,北卡羅納州,美國)、磷酸化-NF-κB p65抗體(pNF-κB p65;Cell Signaling Technology公司,Beverly,麻州,美國),稀釋於DAKO抗體稀釋緩衝液中(DAKO公司,Glostrup,丹麥)處理整夜,然後在室溫下以在相同緩衝液的共軛連接辣根過氧化物酶(horseradish peroxidase,HRP)的二級抗體(DAKO公司)或是抗-兔聚合物-HRP抗體(BioGenex 公司,Fremont,加州,美國)處理1小時;然後加入DAB(BioGenex公司)。
蘇木精係用於復染細胞核。針對細胞凋亡的偵測,使用末端去氧核苷酸轉移酶-調節的dUTP缺口末端標記(terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling,TUNEL)。使用凋亡標記加上過氧化酶原位細胞凋亡偵測套組(ApopTag Plus Peroxidase In Situ Apoptosis detection kit,Chemicon公司,Temecula,加州,美國)根據製造商的指示對甲醛固定的組織切片染色。大量的α-SMA、膠原蛋白第III型、膠原蛋白第IV型,或磷酸化NF-κB p65+、PCNA+、F4/80+、CD3+以及細胞凋亡的細胞的數量,在隨機選擇的皮質區腎小管間質腔室的視野中(放大倍率400倍),以Pax-It量化圖像分析軟體進行計數(Paxcam)。
1.5流式細胞儀
來自小鼠的脾細胞以Tris緩衝的氯化銨處理,以去除紅血球,清洗後,再懸浮於補充有10%胎牛血清、Hepes緩衝液、L-麩醯胺酸,以及青黴素/鏈黴素的RPMI1640培養基中(皆來自Invitrogen/Life Technologies公司,Grand Island,紐約州,美國)。接著細胞以T或B細胞的表面標記染色,使用FITC共軛結合的抗-小鼠CD3抗體(17A2)偵測T細胞,以抗小鼠CD19抗體(1D3)偵測B細胞,以及藻紅蛋白-共軛結合的抗-小鼠CD69抗體(H1.2F3;所有抗體皆來自BD Biosciences公司)。針對骨髓細胞分析,來自小鼠的骨髓依照描述分離(Takeshita S等人,2014年),且以抗小鼠Sca-1抗體(BD Biosciences公司)或CD34抗體(eBioscience公司,San Diego,加州,美國)染色。使用FACSCalibur儀器(BD Biosciences公司)進行流式細胞分析。
1.6梅生三色染色(Masson's Trichrome Staining)
將3μm的腎切片培養在75℃達15分鐘。將玻片移轉上方至二甲苯及梯度酒精。在蘇木紫染色1分鐘後,將媒染劑固定於玻片上。在以0.75%橘G
溶液、梅生染色溶液B、2.5%磷鎢酸溶液及苯胺藍染色溶液染色之後,以1%醋酸清洗兩次並以阿拉伯膠固定。風乾數分鐘,在光學顯微鏡上觀察染色的切片。
1.7酵素免疫吸附試驗(enzyme-linked immunosorbent assay,ELISA)
藉由29G胰島素注射針筒從腎大盞及腎盂收集尿液。在正常對照組,則由代謝籠收及尿液。依據製造商(eBioscience and R&D)的說明書,藉由ELISA偵測MCP-1、TNF-α及IL-1β。簡言之,將捕獲抗體塗佈在96孔盤上經過隔夜。以PBST清洗後,將阻斷緩衝液、樣本、偵測抗體及親合素-HRP依序加入。在TMB基質步驟後發展顏色,然後加入2N H2SO4停止反應。最後,測量O.D.450nm。
1.8統計分析
數值是平均值±SD。以Student’s t檢定進行二組別間之比較。p值<0.05視為具有顯著差異。
2.結果
2.1實驗UUO模型的建立
實驗係以8-10週齡的C57BL/6小鼠進行。小鼠隨機分為假手術對照組、疾病對照組與LCHK168治療組,且在UUO之後7或14天進行犧牲。在UUO腎臟的腎盂中觀察到尿液滯留,顯示UUO模型建立成功。參見圖1A及圖1B。
2.2腎組織病理學評估
收集腎組織、固定並且進行H&E染色。如圖2所示,在UUO第7天,疾病對照組小鼠在間質區域顯現出顯著的單核白血球浸潤及腎小管擴張,這些組織病理學特徵在投予LCHK168後受到抑制。在UUO第14天,觀察到纖維
化與腎小管萎縮,這些在投予LCHK168之後也顯著受到抑制。
2.3腎細胞凋亡與增殖的評估
在UUO腎臟中,尿液滯留而造成機械應力,而由腎細胞釋放出細胞激素與ROS回應該應力,導致細胞的損傷,其導致細胞自我更新或凋亡反應。腎切片進行TUNNEL染色以分析凋亡的細胞,結果顯示UUO腎間質區域的染色在投予LCHK168後下降。參見圖3A。
以增殖的細胞核抗原(proliferating cell nuclear antigen,PCNA),進行腎切片免疫組織化學染色,其係一種不只針對腎小管上皮細胞增殖狀態也針對活化的肌纖維母細胞與發炎細胞的標記,結果顯示在UUO之後PCNA顯現出顯著地增加,特別是在擴張的腎小管中。然而,在投予LCHK168之後,PCNA的表現下降。這些結果顯示,LCHK168可能減弱細胞凋亡與損傷。見圖3B。
2.4纖維化表現評估
在UUO腎臟中,纖維化是一種對腎組織損傷的不良反應,且若阻塞持續存在,則將會發展為不可逆的腎功能不全。以梅生三色染色進行腎切片的組織化學染色顯示,相較於假手術對照組,在UUO間質區域內纖維化組織顯著地增加,而在投予LCHK168後減少。參見圖4A。進一步對腎切片進行α-SMA、膠原蛋白第III型以及膠原蛋白第IV型的免疫組織化學染色分析,結果顯示這些指標都在UUO間質區域中強烈地表現,且在投予LCHK168後表現下降。參見圖4B-圖4E。這些數據顯示,LCHK168可能減緩肌纖維母細胞的活化以及在腎間質中的腎纖維化。
2.5 NF-κB調節的發炎反應
2.5.1 NF-κB在腎組織中的表現
NF-κB是一種針對其細胞激素與細胞黏附分子的刺激之發炎相關因子的調節所必需的核轉錄因子。先前的研究顯示,在各種發炎性疾病中,包括腎臟疾病,NF-κB的表現水平提升。針對NF-κB的腎切片免疫組織化學染色顯示NF-κB表現的增加,且在投予LCHK168後被抑制。參見圖5。這數據顯示,LCHK168可抑制在UUO腎臟內的NF-κB。
2.5.2單核白血球浸潤
先前的研究顯示,發炎細胞在UUO的發病機制中扮演重要的角色。單核白血球的浸潤可在UUO的早期階段中被觀察到,特別是巨噬細胞與T淋巴細胞。隨著阻塞的持續,活化的發炎細胞刺激腎小管上皮細胞或其他發炎細胞釋放各種細胞激素與趨化激素,引致更多的發炎細胞聚集至腎間質區域,以及誘發的腎發炎與纖維化。單核白血球浸潤的評估以腎切片的F4/80與CD3+免疫組織化學染色來進行,其為巨噬細胞與T細胞的標記。在UUO之後F4/80與CD3+的表現增加,且在投予LCHK168後減少。參見圖6A、圖6B。這些數據顯示,LCHK168可預防腎間質的巨噬細胞與T細胞浸潤。
2.5.3尿液中MCP-1、TNF-α及IL-1β的表現評估
在初始階段,細胞激素及趨化激素集中釋放在腎並可聚集免疫細胞。被聚集的免疫細胞接著釋放越來越多的發炎因子。偵測腎盂中的MCP-1、TNF-α及IL-1β。UUO及UUO+LCHK組均表現較高的MCP-1、TNF-α及IL-1β,相較於第7天的正常對照組而言。雖然這些細胞激素及趨化激素在第14天,在UUO+LCHK組顯著下降,相較於UUO組而言。圖式顯示LCHK168可顯著降低尿液的MCP-1、TNF-α及IL-1β水平。
2.6細胞免疫力的活化與造血幹細胞活化
2.6.1 B與T淋巴細胞的活化
為了檢驗LCHK168是否透過抑制全身性細胞免疫力來預防局部發炎反應與纖維化,我們以流式細胞儀檢驗了在脾細胞中的B細胞與T細胞的活化。如圖8A與圖8B所示,在這三個族群中CD3+CD69+(活化的泛B細胞)與CD4+CD69+(活化的泛T細胞)的百分比皆無顯著的改變。這些數據顯示,由UUO造成的腎病變可能對全身性細胞免疫力的影響不大,且LCHK168可能並非透過抑制全身性細胞免疫力來預防局部發炎反應與纖維化。
2.6.2造血幹細胞的活化
為了檢驗LCHK168是否透過抑制造血幹細胞的活化而預防局部發炎反應與纖維化,我們以流式細胞儀檢驗了在骨髓細胞中的幹細胞與造血幹細胞的活化。如圖9A與圖9B所示,在這三個族群中,幹細胞抗原-1-陽性細胞(造血幹細胞)與CD34+(幹細胞)的百分比皆無顯著的改變。該獲得的數據顯示,由UUO造成的腎病變可能對造血幹細胞活化的影響不大,且LCHK168可能並非透過抑制造血幹細胞的活化來預防局部發炎反應與纖維化。
總而言之,我們的研究顯示,人參皂苷M1在UUO模型中能有效預防腎纖維化的發展。特別是,研究結果顯示人參皂苷M1(1)降低腎間質組織的細胞凋亡與腎小管損傷,(2)預防腎間質組織的纖維化與膠原蛋白沈積,(3)降低NF-κB的活化,(4)預防腎臟的巨噬細胞與T細胞浸潤,以及(5)造血幹細胞的正常功能與全身性細胞免疫力。所有的發現暗示了人參皂苷M1可以進一步被發展為治療或預防腎纖維化的候選新藥。
相信熟習本發明領域普通知識之技術人員可基於本文之闡述最大限度利用本發明,而毋須進一步說明。因此,應理解到,所提供之說明及主張僅用於示例之目的,而非以任何方式侷限本發明之範疇。
Claims (4)
- 一種人參皂苷M1用於製造供抑制個體之腎纖維化之藥物的用途。
- 如請求項1之用途,其中該個體具有阻塞性腎病變
- 如請求項1之用途,其中該藥物能有效降低或緩解於該個體中的一或多種選自於由以下所組成之群組的症狀或病況:單核白血球發炎、腎小管擴張、腎小管萎縮、腎小管上皮細胞的增殖、纖維母細胞或肌纖維母細胞的活化,以及膠原蛋白的沈積。
- 如請求項1之用途,其中該藥物可有效降低或緩解於該個體的腎間質中的單核白血球發炎或纖維化。
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| WO2005102326A2 (en) * | 2004-04-23 | 2005-11-03 | Ab Science | Use of c-kit inhibitors for treating renal diseases |
| AU2006213875B2 (en) * | 2005-02-08 | 2010-08-19 | Genzyme Corporation | Antibodies to TGFBETA |
| KR20060114774A (ko) * | 2005-05-02 | 2006-11-08 | 에스케이케미칼주식회사 | (20S)-진세노사이드 Rg3을 함유하는 주름 예방 및개선용 화장료 |
| US7932057B2 (en) * | 2007-07-09 | 2011-04-26 | Sheau-Long Lee | Method for preparing 20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol (ginsenoside M1) by using sanqi leaves and stems |
| TW200930388A (en) * | 2008-01-10 | 2009-07-16 | Shih-Ming Chen | Pharmaceutical composition for treating cisplatin induced nephropathy |
| US8080568B1 (en) * | 2010-06-29 | 2011-12-20 | Ewha University - Industry Collaboration Foundation | 2-pyridyl substituted imidazoles as therapeutic ALK5 and/or ALK4 inhibitors |
| CN102942610A (zh) * | 2012-11-26 | 2013-02-27 | 吉林农业大学 | 人参皂苷m1正丁酸酯的制备及其抗糖尿病医药用途 |
| EP3137089B1 (en) * | 2014-05-02 | 2018-10-10 | Sheau-Long Lee | Use of ginsenoside m1 for treating lupus nephritis |
| KR102433847B1 (ko) * | 2014-11-03 | 2022-08-17 | 시우-롱 리 | Iga 신장병증을 치료하기 위한 진세노사이드 m1의 용도 |
-
2015
- 2015-05-18 TW TW104115754A patent/TWI670063B/zh active
- 2015-05-18 JP JP2017512092A patent/JP6626094B2/ja active Active
- 2015-05-18 KR KR1020167035138A patent/KR102360315B1/ko active Active
- 2015-05-18 EP EP15793585.9A patent/EP3146062B1/en active Active
- 2015-05-18 WO PCT/CN2015/079156 patent/WO2015172746A1/en not_active Ceased
- 2015-05-18 CN CN201580019639.7A patent/CN106795546A/zh active Pending
- 2015-05-18 DK DK15793585.9T patent/DK3146062T3/da active
- 2015-05-18 US US15/311,683 patent/US10357507B2/en active Active
- 2015-05-18 ES ES15793585T patent/ES2739203T3/es active Active
Also Published As
| Publication number | Publication date |
|---|---|
| TWI670063B (zh) | 2019-09-01 |
| KR20170007426A (ko) | 2017-01-18 |
| JP6626094B2 (ja) | 2019-12-25 |
| US20170087170A1 (en) | 2017-03-30 |
| EP3146062A1 (en) | 2017-03-29 |
| JP2017515904A (ja) | 2017-06-15 |
| DK3146062T3 (da) | 2019-08-12 |
| WO2015172746A1 (en) | 2015-11-19 |
| US10357507B2 (en) | 2019-07-23 |
| EP3146062A4 (en) | 2017-11-29 |
| CN106795546A (zh) | 2017-05-31 |
| EP3146062B1 (en) | 2019-05-08 |
| ES2739203T3 (es) | 2020-01-29 |
| KR102360315B1 (ko) | 2022-02-08 |
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