PMID- 27929537 OWN - NLM STAT- MEDLINE DCOM- 20170918 LR - 20181113 IS - 2041-4889 (Electronic) VI - 7 IP - 12 DP - 2016 Dec 8 TI - Upregulation of MiR-205 under hypoxia promotes epithelial-mesenchymal transition by targeting ASPP2. PG - e2517 LID - 10.1038/cddis.2016.412 [doi] AB - The epithelial-mesenchymal transition (EMT) is one of the crucial procedures for cancer invasion and distal metastasis. Despite undergoing intensive studies, the mechanisms underlying EMT remain to be completely elucidated. Here, we identified that apoptosis-stimulating protein of p53-2 (ASPP2) is a novel target of MiR-205 in various cancers. Interestingly, the binding site of MiR-205 at the 3'-untranslated region of ASPP2 was highly conserved among different species. An inverse correlation between MiR-205 and ASPP2 was further observed in vivo in cervical cancers, suggesting MiR-205 may be an important physiological inhibitor of ASPP2. Hypoxia is a hallmark of solid tumor microenvironment and one of such conditions to induce EMT. Notably, MiR-205 was remarkably induced by hypoxia in cervical and lung cancer cells. A marked suppression of ASPP2 was observed simultaneously. Further studies confirmed that hypoxia-induced ASPP2 suppression was mainly attributed to the elevated MiR-205. Interestingly, the alteration of MiR-205/ASPP2 under hypoxia was accompanied with the decreased epithelial marker E-cadherin and increased mesenchymal marker Vimentin, as well as a morphological transition from the typical cobblestone-like appearance to the mesenchymal-like structure. More importantly, MiR-205 mimics or ASPP2 silencing similarly promoted EMT process. By contrast, ASPP2 recovery or MiR-205 inhibitor reversed MiR-205-dependent EMT. Further studies demonstrated that the newly revealed MiR-205/ASPP2 axis promoted cell migration and also increased cell proliferation both in vivo and in vitro. These data together implicated a critical impact of MiR-205/ASPP2 on promoting EMT. MiR-205/ASPP2 may be potential diagnostic and therapeutic biomarkers in cervical and lung cancers. FAU - Wang, Xingwen AU - Wang X AD - School of Life Science and Technology, Harbin Institute of Technology, Shenzhen, China. AD - Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen, China. FAU - Yu, Miao AU - Yu M AD - School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, China. FAU - Zhao, Kunming AU - Zhao K AD - School of Life Science and Technology, Harbin Institute of Technology, Shenzhen, China. FAU - He, Mengmeng AU - He M AD - School of Life Science and Technology, Harbin Institute of Technology, Shenzhen, China. FAU - Ge, Wenjie AU - Ge W AD - School of Life Science and Technology, Harbin Institute of Technology, Shenzhen, China. AD - Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen, China. FAU - Sun, Yuhui AU - Sun Y AD - The First Affiliated Hospital, Harbin Medical University, Harbin, China. FAU - Wang, Yihua AU - Wang Y AUID- ORCID: 0000-0001-5561-0648 AD - Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton, UK. FAU - Sun, Haizhu AU - Sun H AD - The Second Affiliated Hospital, Harbin Medical University, Harbin, China. FAU - Hu, Ying AU - Hu Y AD - School of Life Science and Technology, Harbin Institute of Technology, Shenzhen, China. AD - Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161208 PL - England TA - Cell Death Dis JT - Cell death & disease JID - 101524092 RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (MIRN205 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (TP53BP2 protein, human) SB - IM MH - Animals MH - Apoptosis Regulatory Proteins/*genetics/metabolism MH - Base Sequence MH - Cell Hypoxia/genetics MH - Cell Line, Tumor MH - Cell Movement/genetics MH - Cell Proliferation/genetics MH - Epithelial-Mesenchymal Transition/*genetics MH - Female MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Mice, Nude MH - MicroRNAs/*genetics/metabolism MH - Models, Biological MH - Signal Transduction/genetics MH - Up-Regulation/*genetics PMC - PMC5261019 EDAT- 2016/12/09 06:00 MHDA- 2017/09/19 06:00 PMCR- 2016/12/01 CRDT- 2016/12/09 06:00 PHST- 2016/07/29 00:00 [received] PHST- 2016/10/24 00:00 [revised] PHST- 2016/11/10 00:00 [accepted] PHST- 2016/12/09 06:00 [entrez] PHST- 2016/12/09 06:00 [pubmed] PHST- 2017/09/19 06:00 [medline] PHST- 2016/12/01 00:00 [pmc-release] AID - cddis2016412 [pii] AID - 10.1038/cddis.2016.412 [doi] PST - epublish SO - Cell Death Dis. 2016 Dec 8;7(12):e2517. doi: 10.1038/cddis.2016.412.