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DOI: 10.3971/j.issn.1000-8578.2018.17.1112
Keywords: A Predictor of Risk and Prognosis of Breast Cancer,Tanshinone ⅡA Enhances Chemosensitivity of Breast Cancer Cells to Doxorubicin and Related Mechanism,In Situ Hybridization Status of 568 Cases of HER2 Equivocal Breast Cancer,Aortic Dissection in Apatinib Treatment of Advanced Hepatocellular Carcinoma: A Case Report,Apatinib Suppresses Proliferation and Induced Apoptosis of Human Breast Cancer Cell Line MDA-MB-231 Through Glycolytic Inhibition,Progress of Whole Exon Sequencing in Pathogenesis and Diagnosis of Breast Cancer,Feedback Activation of STAT3 Confers Resistance of HER2-positive Breast Cancer Cells to Lapatinib,Influence of NRP-1 Monoclonal Antibody on Growth of Breast Cancer Xenografts in Nude Mouse,Expression of Circular RNA ciRS-7 and Its Effect on Invasion and Migration of Triplenegative reast Cancer Cells
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摘要 目的 探讨阿帕替尼对人乳腺癌化疗多药耐药性的逆转作用及其机制。方法 不同浓度的阿帕替尼作用于体外培养的人乳腺癌MCF-7及MCF-7/ADR细胞48 h,MTT法检测阿帕替尼对两种细胞的细胞毒性;低毒浓度的阿帕替尼与化疗药物紫杉醇及阿霉素联用,探讨阿帕替尼对两种细胞化疗耐药性的影响;采用流式细胞术检测阿帕替尼对罗丹明123在MCF-7及MCF-7/ADR细胞内蓄积的影响;采用Pgp-Glo? Assay Systems试剂盒观察阿帕替尼对多药耐药相关蛋白P-gp的ATPase活性的影响;采用Western blot法检测阿帕替尼对P-gp表达及AKT磷酸化的影响。结果 阿帕替尼可浓度依赖性地逆转乳腺癌MCF-7/ADR细胞对紫杉醇及阿霉素的多药耐药性(P<0.05)、增加罗丹明123在MCF-7/ADR细胞内的蓄积(P<0.05)及激活P-gp转运体的ATPase活性(P<0.05),而对P-gp的表达没有影响;此外,阿帕替尼不改变AKT的磷酸化水平。结论 阿帕替尼可能通过抑制P-gp转运体的外排功能逆转P-gp转运体介导的乳腺癌化疗多药耐药性
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