Document Detail

Induction, modulation and potential targets of miR-210 in pancreatic cancer cells.
MedLine Citation:
PMID:  22672828     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: MiR-210 is induced by hypoxia and plays different roles in the development of certain cancers. However, little is known about its role in pancreatic cancer (PC). This study aimed to explore the induction and modulation of PC by miR-210 and its potential molecular targets.
METHODS: PC cells were cultured under normoxic and hypoxic conditions. Expression of miR-210 and hypoxia-inducible factor (HIF)-1alpha was detected using quantitative reverse-transcription polymerase chain reaction. Cancer cells were transiently transfected with HIF-1alpha small interfering RNA (siRNA) and miR-210 mimics, and cell proliferation was measured using the CCK-8 assay. Potential targets for miR-210 were then identified using a dual luciferase reporter assay.
RESULTS: Hypoxic conditions induced miR-210 expression in six PC cell lines (AsPC-1, BxPC-3, MIAPaCa-2, PANC-1, Su86.86 and SW1990), but not in Capan-1 or T3M4 cells. Transfection of HIF-1alpha siRNA into PANC-1 cells markedly inhibited HIF-1alpha expression, and subsequently down-regulated miR-210 expression under hypoxic conditions. MiR-210 had no observable impact on the proliferation of PANC-1 or Su86.86 cells and dual luciferase reporter assays showed significantly reduced luciferase activity in the wild-type E2F3, EFNA3, GIT2, MNT, ZNF462 and EGR3 constructs, compared to the corresponding mutants, but not in HOXA3.
CONCLUSIONS: These results suggest that miR-210 expression in PC cells is induced by hypoxia through a HIF-1alpha-dependent pathway, but does not influence PC cell proliferation. Also, E2F3, EFNA3, GIT2, MNT, ZNF462 and EGR3 may be potential miR-210 targets in PC.
Wei-Yun Chen; Wen-Jing Liu; Yu-Pei Zhao; Li Zhou; Tai-Ping Zhang; Ge Chen; Hong Shu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Hepatobiliary & pancreatic diseases international : HBPD INT     Volume:  11     ISSN:  1499-3872     ISO Abbreviation:  HBPD INT     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-06-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101151457     Medline TA:  Hepatobiliary Pancreat Dis Int     Country:  China    
Other Details:
Languages:  eng     Pagination:  319-24     Citation Subset:  IM    
Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing 100730, China.
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