DHX32 Promotes Angiogenesis in Colorectal Cancer Through Augmenting β-catenin Signaling to Induce Expression of VEGFA

Huayue Lin, Zanxi Fang, Yuanhui Su, Peihua Li, Jingkun Wang, Hongfeng Liao, Qing Hu, Chunlei Ye, Yizhen Fang, Qing Luo, Zhiyuan Lin, Chao Pan, Fen Wang, Zhong Ying Zhang

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

We previously reported that overexpression of DHX32 contributes to the growth and metastasis of colorectal cancer (CRC). However, the underlying mechanism is not largely characterized. Herein, we reported that DHX32 in CRC cells upregulated expression of vascular endothelial growth factor A (VEGFA) at the transcription level through interacting with and stabilizing β-catenin. This promoted the recruitment of host endothelial cells to the tumor, and therefore, formation of microvessel in the tumor. Xenograft model revealed that depletion of DHX32 in CRC cells significantly reduced the microvessel density in the grafts and suppressed the growth of grafts. Furthermore, the expression level of DHX32 was positively associated with microvessel density in human CRC and poor outcome of CRC patients. Therefore, the report demonstrates that DHX32 is a pro-angiogenic factor, that inhibition of DHX32-β-catenin pathway can provide a strategy for CRC treatment, and that the expression level of DHX32 has the potential to serve as a biomarker for CRC diagnosis and prognosis.

Original languageEnglish (US)
Pages (from-to)62-72
Number of pages11
JournalEBioMedicine
Volume18
DOIs
StatePublished - Apr 2017

Keywords

  • Angiogenesis
  • Colorectal cancer
  • DHX32
  • VEGFA
  • β-catenin

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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