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《大黃酸對耐順鉑A549/cDDP細(xì)胞株的耐藥逆轉(zhuǎn)作用及機(jī)制研究-論文.pdf》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、·12l8·熱帶醫(yī)學(xué)雜志2013年1O月第13卷第10期JTropMed,Oct.2013,Vo1.13,No.10·實驗研究論著·大黃酸對耐順鉑A549/cDDP細(xì)胞株的耐藥逆轉(zhuǎn)作用及機(jī)制研究陳奕芝,劉錦新,譚爍,李鐵鋒工,廖鏡云。,錢有為(1.深圳市龍崗中心醫(yī)院,廣東深圳518116;2.廣東藥學(xué)院藥物制劑系,廣東廣州510006)摘要:目的觀察大黃酸對耐順鉑(cDDP)A549/cDDP細(xì)胞的耐藥逆轉(zhuǎn)作用并探討其可能的作用機(jī)制。方法用不同濃度的大黃酸與耐藥細(xì)胞A549/cDDP共同培養(yǎng),通過MTT法檢
2、測細(xì)胞增殖抑制率并確定大黃酸逆轉(zhuǎn)耐藥最佳濃度:將對數(shù)生長期的細(xì)胞隨機(jī)分成2組,對照組分別加入不同濃度的cDDP,實驗組在對照組基礎(chǔ)上加入2~g/ml的大黃酸。同時設(shè)空白對照組,采用MTr法測算細(xì)胞增殖抑制率,計算兩組細(xì)胞cDDP的半數(shù)抑制濃度(Ic)及大黃酸的逆轉(zhuǎn)耐藥倍數(shù);將對數(shù)生長期的細(xì)胞分為2組,對照組加入2~g/mlcDDP,實驗組在對照組的基礎(chǔ)上加入2~g/ml的大黃酸,同時設(shè)空白對照組,流式細(xì)胞儀檢測各組細(xì)胞P蛋白(P—gP)及多藥耐藥相關(guān)蛋白1(MRP一1)的表達(dá)。結(jié)果隨著大黃酸濃度的增加,其細(xì)
3、胞增殖抑制率不斷增加(P<0.05),大黃酸逆轉(zhuǎn)耐藥的最佳濃度為2~g/ml;對照組IC為31.642~g/ml,實驗組IC為21.412~g/ml,大黃酸的逆轉(zhuǎn)耐藥倍數(shù)為1.48倍;大黃酸能下調(diào)A549/cDDP細(xì)胞P.gP及MRP的表達(dá)。結(jié)論大黃酸可逆轉(zhuǎn)耐cDDP的A549/cDDP細(xì)胞株的耐藥性,其作用機(jī)制可能與下調(diào)P.gP及MRP一1蛋白表達(dá)有關(guān)。關(guān)鍵詞:大黃酸;A549/cDDP細(xì)胞;順鉑;P蛋白;多藥耐藥相關(guān)蛋白.1中圖分類號:R73—36文獻(xiàn)標(biāo)識碼:A文章編號:1672.3619(2013)1
4、0—1218—03StudyontheeficiencyandmechanismsofrheinonreveringcisplatinresistanceofhumanlungcancercelllineA549/cDDPCHENYi—zhi。,LIUJin—xin,TANShuo,LITie—feng,LIAOJing—yun,QIANYou—wei(.LonggangDistrictCentr01Hospit01ofShenzhen,Guangdong,Shenzhen518116;2.Departme
5、ntofPharmaceuricolPreparations,GuangdongPharmaceuticalUniversity,Guangdong,Guangzhou510006,China)Abstract:ObjectiveToexploretheeffectandmechanismofrheinonreveringcisplatin(cDDP)resistanceofhumanlungcancercelllineA549/cDDP.MethodsA549/cDDPcellswereculturedw
6、ithdifferentconcentrationsofrhein.MqTassaywasusedtodetectthecellproliferationinhibitionrate,andtodeterminetheoptimalconcentrationofrheinforthereversingdrugresistance.A549/cDDPcellsweredividedintotwogroups.CeUsincontrolgroupwereculturedwithdifferentconcentr
7、ationsofcDDP,andcellsinexperimentalgroupweregiven2~g/mlrheinonthebasisofthecontrolgroup.MTrassaywasusedtodetectthecellproliferationinhibitionrate,andIC50andreversingmuhiplewerecalculated.A549/cDDPcellsweredividedintoblankcontrolgroup,positivecontrolgroup(2
8、~g/mlcDDP)andexperimentalgroup(2~g/mlcDDP+2~g/mlrhein),after24hours,P-glycoprotein(P-gP)andmulti—drugresistanceprotein一1(MRP.1)wereanalyzedbyflowcytometry.ResultsRheincouldinhibitcellproliferationindosedepend