目的:观察微小核糖核酸-134-5p(mi R-134-5p)转染对宫颈癌细胞增殖和凋亡的影响,验证其可能的分子机制。方法:收集湖北医药学院附属人民医院肿瘤中心2016年5月至8月收治的8名宫颈癌患者肿瘤组织和相应癌旁组织。利用lipofectamine 2000...目的:观察微小核糖核酸-134-5p(mi R-134-5p)转染对宫颈癌细胞增殖和凋亡的影响,验证其可能的分子机制。方法:收集湖北医药学院附属人民医院肿瘤中心2016年5月至8月收治的8名宫颈癌患者肿瘤组织和相应癌旁组织。利用lipofectamine 2000将mi R-134-5p mimics转染至宫颈癌Hela和Si Ha细胞。采用MTT法和集落形成实验检测细胞增殖活性;流式细胞术(FCM)检测细胞周期和细胞凋亡;q RT-PCR检测宫颈癌组织和细胞mi R-134-5p m RNA表达以及宫颈癌细胞EGFR m RNA表达;Western blotting检测宫颈癌细胞EGFR信号通路相关蛋白的表达。结果:宫颈癌组织mi R-134-5p m RNA表达显著低于癌旁组织(P<0.01)。和转染mi R-NC的Hela和Si Ha细胞比较,转染mi R-134-5pmimics的宫颈癌Hela和Si Ha细胞mi R-134-5p m RNA表达显著升高;细胞增殖能力显著降低(转染第5天,Hela细胞:1.06±0.13 vs 1.32±0.07;Si Ha细胞:1.12±0.10 vs 1.42±0.12,均P<0.05);形成的集落数减少;G0/G1期细胞比例显著上升,S期和G2/M期细胞比例显著下降;细胞凋亡率显著增加[Hela细胞:(26.53±13.48)%vs(3.25±1.74)%;Si Ha细胞:(30.49±12.04)%vs(5.10±2.86)%,均P<0.05];EGFR m RNA和EGFR蛋白表达显著下调,其中EGFR m RNA,Hela细胞下调58%(P<0.01),Si Ha细胞下调41%(P<0.05);EGFR下游靶蛋白p-AKT、p-ERK1/2和Cyclin D1蛋白及p EGFR蛋白表达显著下调。结论:mi R-134-5p可显著抑制宫颈癌细胞增殖并促进细胞凋亡,其可能的分子机制是通过抑制EGFR基因的表达,抑制EGFR通路的活化。展开更多
1文献来源 Becker A, Crombag L, Heideman DA, et al. Retreatment with Erlotinib: Regain of TKI sensitivity following a drug holiday for patients with NSCLC who initially responded to EGFR-TKI treatment [J]. Eur J Cance...1文献来源 Becker A, Crombag L, Heideman DA, et al. Retreatment with Erlotinib: Regain of TKI sensitivity following a drug holiday for patients with NSCLC who initially responded to EGFR-TKI treatment [J]. Eur J Cancer, 2011,47(17) :2603-2606.2展开更多
In recent years,many significant advances have been made on molecular target therapy to aim directly at epidermal growth factor receptors and vascular endothelial growth factor in breast cancers.Clinical studies of su...In recent years,many significant advances have been made on molecular target therapy to aim directly at epidermal growth factor receptors and vascular endothelial growth factor in breast cancers.Clinical studies of such agents as trastuzumab,lapatinib,erlotinib and bevacituzumab have been widely conducted.This paper will review the recent research progress related to targeted therapy.展开更多
文摘目的:观察微小核糖核酸-134-5p(mi R-134-5p)转染对宫颈癌细胞增殖和凋亡的影响,验证其可能的分子机制。方法:收集湖北医药学院附属人民医院肿瘤中心2016年5月至8月收治的8名宫颈癌患者肿瘤组织和相应癌旁组织。利用lipofectamine 2000将mi R-134-5p mimics转染至宫颈癌Hela和Si Ha细胞。采用MTT法和集落形成实验检测细胞增殖活性;流式细胞术(FCM)检测细胞周期和细胞凋亡;q RT-PCR检测宫颈癌组织和细胞mi R-134-5p m RNA表达以及宫颈癌细胞EGFR m RNA表达;Western blotting检测宫颈癌细胞EGFR信号通路相关蛋白的表达。结果:宫颈癌组织mi R-134-5p m RNA表达显著低于癌旁组织(P<0.01)。和转染mi R-NC的Hela和Si Ha细胞比较,转染mi R-134-5pmimics的宫颈癌Hela和Si Ha细胞mi R-134-5p m RNA表达显著升高;细胞增殖能力显著降低(转染第5天,Hela细胞:1.06±0.13 vs 1.32±0.07;Si Ha细胞:1.12±0.10 vs 1.42±0.12,均P<0.05);形成的集落数减少;G0/G1期细胞比例显著上升,S期和G2/M期细胞比例显著下降;细胞凋亡率显著增加[Hela细胞:(26.53±13.48)%vs(3.25±1.74)%;Si Ha细胞:(30.49±12.04)%vs(5.10±2.86)%,均P<0.05];EGFR m RNA和EGFR蛋白表达显著下调,其中EGFR m RNA,Hela细胞下调58%(P<0.01),Si Ha细胞下调41%(P<0.05);EGFR下游靶蛋白p-AKT、p-ERK1/2和Cyclin D1蛋白及p EGFR蛋白表达显著下调。结论:mi R-134-5p可显著抑制宫颈癌细胞增殖并促进细胞凋亡,其可能的分子机制是通过抑制EGFR基因的表达,抑制EGFR通路的活化。
文摘1文献来源 Becker A, Crombag L, Heideman DA, et al. Retreatment with Erlotinib: Regain of TKI sensitivity following a drug holiday for patients with NSCLC who initially responded to EGFR-TKI treatment [J]. Eur J Cancer, 2011,47(17) :2603-2606.2
文摘In recent years,many significant advances have been made on molecular target therapy to aim directly at epidermal growth factor receptors and vascular endothelial growth factor in breast cancers.Clinical studies of such agents as trastuzumab,lapatinib,erlotinib and bevacituzumab have been widely conducted.This paper will review the recent research progress related to targeted therapy.