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《選擇性環(huán)氧合酶-2抑制劑塞來昔布抑制B細(xì)胞淋巴瘤細(xì)胞株》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在工程資料-天天文庫。
1、選擇性環(huán)氧合酶-2抑制劑塞來昔布抑制B細(xì)胞淋巴瘤細(xì)胞株MDR-1mRNA及Bcl-2mRNA表達(dá)并增強(qiáng)表柔比星的抗腫瘤作用化范例1,王玲燕2,趙鑫1,李瑩1,鄔揚(yáng)炯1,高松11.復(fù)旦大學(xué)附屬金山醫(yī)院血液內(nèi)科,上海201508;2.復(fù)旦大學(xué)附屬中山醫(yī)院實(shí)驗(yàn)研究中心,上海200032[摘要]背景與目的:部分非霍奇金淋巴瘤(non-Hodgkin’slymphoma,NHL)具有高表達(dá)環(huán)氧合酶-2(cyclooxygenase-2,COX-2)的特征,而后者與P-糖蛋白及Bcl-2表達(dá)相關(guān),可能導(dǎo)致NHL對(duì)化療耐藥。本研究目的即為探討B(tài)細(xì)胞淋巴瘤細(xì)胞
2、株中COX-2的表達(dá)以及選擇性COX-2抑制劑塞來昔布增強(qiáng)淋巴瘤細(xì)胞對(duì)表柔比星抗腫瘤效應(yīng)的敏感性及其可能機(jī)制。方法:熒光定量PCR(qRT-PCR)及蛋白[質(zhì)]印跡法(Westernblot)方法分別檢測(cè)Raji、Jeko-1和Namalwa等淋巴瘤細(xì)胞株以及正常人外周血B細(xì)胞的COX-2表達(dá);以梯度濃度的塞來昔布作用于淋巴瘤細(xì)胞株,CCK-8方法檢測(cè)細(xì)胞增殖的抑制程度,qRT-PCR檢測(cè)各細(xì)胞株MDR-1及Bcl-2mRNA表達(dá)的變化;表柔比星單獨(dú)或聯(lián)合不同濃度的塞來昔布處理Raji細(xì)胞株72h后,CCK-8方法分析塞來昔布對(duì)表柔比星的增敏作用。結(jié)果
3、:各淋巴瘤細(xì)胞株及正常對(duì)照外周血B細(xì)胞均不表達(dá)COX-2。塞來昔布單藥即可對(duì)各淋巴瘤細(xì)胞株產(chǎn)生程度不同的抗增殖效應(yīng);隨著塞來昔布作用濃度的增加,除Jeko-1細(xì)胞不表達(dá)MDR-1外,其余細(xì)胞株MDR-1及Bcl-2mRNA表達(dá)水平逐漸下降;塞來昔布明顯增強(qiáng)表柔比星對(duì)Raji細(xì)胞的抗腫瘤活性,二者之間具有協(xié)同作用。結(jié)論:選擇性COX-2抑制劑塞來昔布下調(diào)B細(xì)胞淋巴瘤細(xì)胞株的MDR-1及Bcl-2mRNA水平,并且增強(qiáng)表柔比星對(duì)淋巴瘤細(xì)胞的抗腫瘤效應(yīng)。[關(guān)鍵詞]環(huán)氧合酶-2;塞來昔布;淋巴瘤;MDR-1基因;Bcl-2基因DOI:10.3969/j.iss
4、n.1007-3969.2015.06.0XX中圖分類號(hào):R737.9 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1007-3639(2015)06-0XXX-0X基金項(xiàng)目:上海市自然科學(xué)基金(13ZR1405700)。通信作者:高松,E-mail:jsyyxyk2014@163.com-9-Selectivecyclooxygenase-2inhibitorcelecoxibsensitizesB-cell-originatedlymphomacelllinestoepirubicinviadown-regulationofMDR-1mRNAandBcl-2mR
5、NAexpressionHUAFanli1,WANGLingyan2,ZHAOXin1,LIYing1,WUYangjiong1,GAOSong1(1.DepartmentofHematology,JinshanHospital,FudanUniversity,Shanghai201508,China;2.BiomedicalResearchCentre,ZhongshanHospital,FudanUniversity,Shanghai200032,China)Correspondenceto:GAOSong,E-mail:jsyyxyk2014@1
6、63.com[Abstract]Backgroundandpurpose:Ithasbeendemonstratedthatcyclooxygenase-2(COX-2)isover-expressedinsomesubtypesofnon-Hodgkin’slymphoma(NHL),andCOX-2correlateswiththeexpressionofP-glycoproteinandBcl-2,whichmaycontributetochemotherapy-resistanceinNHL.Thepurposeofthisstudywasto
7、investigatetheexpressionofCOX-2inB-celllymphomacelllinesandthepotentialmechanismsofcelecoxib,aselectiveCOX-2inhibitor,tosensitizelymphomacelllinestoepirubicin.Methods:Quantitativefluorescentreal-timepoly-chain-reaction(qRT-PCR)andWesternblotwereemployedtodeterminetheexpressionof
8、COX-2inRaji,Jeko-1andNamalwacelllines,aswellasi