Heliyon (Apr 2021)

MiRNA-20b/SUFU/Wnt axis accelerates gastric cancer cell proliferation, migration and EMT

  • Yin Peng,
  • Ying Qin,
  • Xiaojing Zhang,
  • Shiqi Deng,
  • Yuan Yuan,
  • Xianling Feng,
  • Wangchun Chen,
  • Fan Hu,
  • Yuli Gao,
  • Jieqiong He,
  • Yulan Cheng,
  • Yanjie Wei,
  • Xinmin Fan,
  • Hassan Ashktorab,
  • Duane Smoot,
  • Song Li,
  • Stephen J. Meltzer,
  • Shutong Zhuang,
  • Na Tang,
  • Zhe Jin

Journal volume & issue
Vol. 7, no. 4
p. e06695

Abstract

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Previous research has found that miRNA-20b is highly expressed in gastric cancer (GC), however, its function and underlying mechanism are not clear. Wnt signaling pathway, implicated in tumorigeneisis, is activated in more than 30% of GC. We would like to characterize the biological behavior of miRNA-20b in terms of modulating Wnt/β-catenin signaling and EMT. We showed that miRNA-20b inhibitors suppressed Topflash/Fopflash dependent luciferase activity and the β-catenin nuclear translocation, resulting in inhibition of Wnt pathway activity and EMT. SUFU, negatively regulating Wnt and Hedgehog signaling pathway, was proved to be targeted by miRNA-20b. Moreover, additional knockdown of SUFU alleviated the inhibitory effect on Wnt pathway activity, EMT, cell proliferation/migration and colony formation caused by miRNA-20b inhibition.In summary, miRNA-20b is an oncogenic miRNA and promoted cell proliferation, migration and EMT in GC partially by activating Wnt pathway via targeting SUFU.

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