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hTERT启动子驱动的HSV-TK基因对人胰腺癌细胞patu8988的杀伤作用 被引量:1

Killing Effect of HSV-TK Gene Driven by a Human Telomerase Reverse Tran-scriptase Gene Promoter on Human Pancreatic Cancer Cell Line Patu 8988
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摘要 [目的]探讨hTERT启动子驱动的HSV-TK基因对人胰腺癌细胞patu8988的杀伤作用。[方法]应用分子生物学方法构建hTERT启动子调控下的TK基因真核表达载体。经同源重组产生重组腺病毒PSG-TP-TK。同法制备PSU-CMV-TK。利用重组腺病毒PSG-TP-TK和PSU-CMV-TK感染人胰腺癌细胞株patu8988和正常人原代成纤维细胞,加入GCV。用MTT和流式细胞仪检测PSG-TP-TK对各种细胞的杀伤作用;应用RT-PCR检测转染腺病毒后肿瘤细胞和正常细胞中TK基因的表达情况。[结果]PSG-TP-TK对端粒酶阳性的人胰腺癌细胞有明显的杀伤作用,而对端粒酶阴性的正常细胞则无杀伤作用(P<0.05)。hTERT启动子诱导人胰腺癌细胞株patu8988凋亡的效能与CMV启动子相似,两者差异无显著性(P>0.05)。PSU-CMV-TK转染后,在patu8988细胞和正常人原代成纤维细胞中均可检测到TK基因;而PSG-TP-TK转染后只有patu8988细胞中有TK基因表达,正常人原代成纤维中则无。[结论]hTERT启动子驱动HSV-TK基因治疗是一种新的胰腺癌靶向治疗方法,具有更高的靶向性和高效性。
出处 《中国肿瘤》 CAS 2009年第2期144-148,共5页 China Cancer
基金 卫生部科学研究基金(WKJ2004-2-001)
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