GPC1 regulated by miR-96-5p, rather than miR-182-5p, in inhibition of pancreatic carcinoma cell proliferation

Int J Mol Sci. 2014 Apr 14;15(4):6314-27. doi: 10.3390/ijms15046314.

Abstract

To determine the relationships between miR-96-5p/-182-5p and GPC1 in pancreatic cancer (PC), we conducted the population and in vitro studies. We followed 38 pancreatic cancer patients, measured and compared the expression of miR-96-5p/-182-5p, GPC1, characteristics and patients' survival time of different miR-96-5p/-182-5p expression levels in PC tissues. In an in vitro study, we investigated the proliferation, cycle and apotosis in cells transfected with mimics/inhibitors of the two miRNAs, and determine their effects on GPC1 by dual-luciferase assay. In the follow-up study, we found that the expressions of miR-96-5p/-182-5p were lower/higher in PC tissues; patients with lower/higher levels of miR-96-5p/-182-5p suffered poorer characteristics and decreased survival time. In the in vitro study, the expressions of miR-96-5p/-182-5p were different in cells. Proliferation of cells transfected with miR-96-5p mimics/inhibitors was lower/higher in Panc-1/BxPC-3; when transfected with miR-182-5p mimics/inhibitors, proliferation of cells were higher/lower in AsPC-1/Panc-1. In a cell cycle study, panc-1 cells transfected with miR-96-5p mimics was arrested at G0/G1; BxPC-3 cells transfected with miR-96-5p inhibitors showed a significantly decrease at G0/G1; AsPC-1 cells transfected with miR-182-5p mimics was arrested at S; Panc-1 cells transfected with miR-182-5p inhibitors showed a decrease at S. MiR-96-5p mimics increased the apoptosis rate in Panc-1 cells, and its inhibitors decreased the apoptosis rate in BxPC-3. Dual luciferase assay revealed that GPC1 was regulated by miR-96-5p, not -182-5p. We found that miR-96-5p/-182-5p as good markers for PC; miR-96-5p, rather than -182-5p, inhibits GPC1 to suppress proliferation of PC cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 5' Untranslated Regions
  • Apoptosis
  • Base Sequence
  • Carcinoma / metabolism
  • Carcinoma / mortality
  • Carcinoma / pathology
  • Cell Line, Tumor
  • Cell Proliferation / genetics
  • Female
  • G1 Phase Cell Cycle Checkpoints
  • Gene Expression Regulation / genetics*
  • Glypicans / metabolism*
  • HEK293 Cells
  • Humans
  • Male
  • MicroRNAs / metabolism*
  • Middle Aged
  • Pancreatic Neoplasms / metabolism
  • Pancreatic Neoplasms / mortality
  • Pancreatic Neoplasms / pathology
  • Survival Rate

Substances

  • 5' Untranslated Regions
  • Glypicans
  • MIRN96 microRNA, human
  • MicroRNAs
  • Mirn182 microRNA, human