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Effects of triethylene tetraamine on telomerase activity and proliferation in HeLa cells.

机译:三亚乙基四胺对HeLa细胞端粒酶活性和增殖的影响。

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Telomerase, which is required to maintain telomeres, has attracted considerable attention as a target for anticancer therapy. In this study, we investigated the inhibition of HeLa cell telomerase activity and cell cycle progression by triethylene tetraamine (TETA), using a modified telomeric repeat amplification protocol (TRAP) assay, and flow cytometry. TETA inhibited telomerase activity in HeLa cell extracts, with an IC(50)of about 7.8 microM. Coupled with this inhibition, TETA also increased the proportion of cells in the G(1)phase of the cell cycle in a dose-dependent manner. These findings demonstrate that TETA is a potent inhibitor of telomerase in micromolar concentrations, and inhibits the proliferation of HeLa cells by arresting them in G(1).
机译:端粒酶是维持端粒的必需物质,作为抗癌治疗的目标已经引起了广泛的关注。在这项研究中,我们调查了三亚乙基四胺(TETA)对HeLa细胞端粒酶活性和细胞周期进程的抑制作用,使用了改良的端粒重复扩增协议(TRAP)分析和流式细胞仪。 TETA抑制HeLa细胞提取物中的端粒酶活性,IC(50)约为7.8 microM。加上这种抑制作用,TETA还以剂量依赖的方式增加了细胞周期G(1)期中细胞的比例。这些发现表明TETA在微摩尔浓度下是端粒酶的有效抑制剂,并通过将HeLa细胞阻滞在G(1)中来抑制其增殖。

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