摘要:目的:探讨RNA结合蛋白QKI-5在肾癌中的生物学功能。方法:应用以慢病毒为载体的过表达技术观察过表达QKI-5对肾癌细胞增殖作用的影响及对细胞周期的影响。结果:过表达QKI-5能够抑制肾癌细胞株786-O和A-498细胞的增殖能力、克隆形成能力;流式细胞术结果显示:过表达QKI-5使786-O和A-498细胞产生G1期阻滞,而这种阻滞与周期相关蛋白CyclinD1表达降低及p21、p27表达增高有关。结论:QKI-5在肾癌中发挥着抑癌基因的功能,可以抑制肾癌细胞增殖,并使细胞周期阻滞在G1期。
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