Differential effects of miR-34c-3p and miR-34c-5p on SiHa cells proliferation apoptosis, migration and invasion
Differential effects of miR-34c-3p and miR-34c-5p on SiHa cells proliferation apoptosis, migration and invasion
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DOI：
10.1016/j.bbrc.2011.05.036
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发表时间：
2011-06-10
影响因子：
3.1
通讯作者：
Marat Alvarez-Salas, Luis
中科院分区：
文献类型：
--
作者：
Adrian Lopez, Jesus;Marat Alvarez-Salas, Luis
MicroRNAs (miRNA) regulate expression of several genes associated with human cancer. Here, we analyzed the function of miR-34c, an effector of p53, in cervical carcinoma cells. Expression of either miR-34c-3p or miR-34c-5p mimics caused inhibition of cell proliferation in the HPV-containing Si Ha cells but not in other cervical cells irrespective of tumorigenicity and HPV content. These results suggest that Si Ha cells may lack of regulatory mechanisms for miR-34c. Mono layer proliferation results showed that miR-34c-3p produced a more pronounced inhibitory effect although both miRNAs caused inhibition of anchorage independent growth at similar extent. However, ectopic expression of pre-miR-34c-3p, but not pre-miR-34c-5p, caused S-phase arrest in Si Ha cells triggering a strong dose-dependent apoptosis. A significant inhibition was observed only for miR-34c-3p on Si Ha cells migration and invasion, therefore implying alternative regulatory pathways and targets. These results suggest differential tumor suppressor roles for miR-34c-3p and miR-34c-5p and provide new insights in the understanding of miRNA biology. (C) 2011 Elsevier Inc. All rights reserved.
