Up-regulation of Dsg2 confered stem cells with malignancy through wnt/β-catenin signaling pathway

Ling Chen, Yanxia Liu, Yanning Xu, Said M. Afify, Ang Gao, Juan Du, Bingbing Liu, Xiaoying Fu, Yixin Liu, Ting Yan, Zhengmao Zhu, Masaharu Seno

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In the previous study, we originally developed cancer stem cells (CSCs) models from mouse induced pluripotent stem cells (miPSCs) by culturing miPSCs in the conditioned medium of cancer cell lines, which mimiced as carcinoma microenvironment. However, the molecular mechanism of conversion in detail remains to be uncovered. Microarray analysis of the CSCs models in this study revealed Dsg2, one of the members of the desmosomal cadherin family, was up-regulated when compared with the original miPSCs. Moreover, the expression of key factors in Wnt/β-catenin signaling pathway were also found up-regulated in one of the CSCs models, named miPS-LLCcm. An autocrine loop was implied between Dsg2 and Wnt/β-catenin signaling pathway when miPSCs were treated with Wnt/β-catenin signaling pathway activators, Wnt3a and CHIR99021, and when the CSCs model were treated with inhibitors, IWR-1 and IWP-2. Furthermore, the ability of proliferation and self-renewal in the CSCs model was markedly decreased in vitro and in vivo when Dsg2 gene was knocked down by shRNA. Our results showed that the Wnt/β-catenin signaling pathway is activated by the up-regulation of Dsg2 expresssion during the conversion of miPSCs into CSCs implying a potential mechanism of the tranformation of stem cells into malignant phenotype.

Original languageEnglish
Article number113416
JournalExperimental Cell Research
Volume422
Issue number1
DOIs
Publication statusPublished - Jan 1 2023

Keywords

  • Cancer stem cells
  • Dsg2
  • Malignant conversion
  • Wnt/β-catenin signaling pathway
  • miPS

ASJC Scopus subject areas

  • Cell Biology

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