Connexins and camp cross-talk in cancer progression and metastasis

Chang Xu Chen, Kai Jun Luo, Jia Peng Yang, Yun Chao Huang, Eduardo R. Cardenas, Bruce J. Nicholson, Jean X. Jiang

Research output: Contribution to journalReview articlepeer-review

Abstract

Connexin-containing gap junctions mediate the direct exchange of small molecules between cells, thus promoting cell–cell communication. Connexins (Cxs) have been widely studied as key tumor-suppressors. However, certain Cx subtypes, such as Cx43 and Cx26, are overexpressed in metastatic tumor lesions. Cyclic adenosine monophosphate (cAMP) signaling regulates Cx expression and function via transcriptional control and phosphorylation. cAMP also passes through gap junction channels between adjacent cells, regulating cell cycle progression, particularly in cancer cell populations. Low levels of cAMP are sufficient to activate key effectors. The present review evaluates the mechanisms underlying Cx regulation by cAMP signaling and the role of gap junctions in cancer progression and metastasis. A deeper understanding of these processes might facilitate the development of novel anticancer drugs.

Original languageEnglish (US)
Article number58
Pages (from-to)1-11
Number of pages11
JournalCancers
Volume13
Issue number1
DOIs
StatePublished - Jan 2021

Keywords

  • CAMP
  • Cancer
  • Connexin
  • Metastasis

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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