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Modulation of signaling between TM4SF5 and integrins in tumor microenvironment

Sin-Ae Lee1, Ki Hun Park, Jung Weon Lee

  • 1Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea.

Frontiers in Bioscience (Landmark Edition)
|January 4, 2011
PubMed

Insights

Transmembrane protein 4 family member 5 (TM4SF5) drives cancer progression by promoting epithelial-mesenchymal transition (EMT) and angiogenesis. Targeting TM4SF5 interactions with integrins inhibits cancer growth and spread.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Transmembrane protein 4 family member 5 (TM4SF5) is highly expressed in various cancers.
  • TM4SF5 is a member of the tetraspanin superfamily, involved in cell signaling.
  • TM4SF5 plays a role in cancer progression through epithelial-mesenchymal transition (EMT).

Purpose of the Study:

  • To review the role of TM4SF5-integrin cooperation in hepatocellular carcinogenesis.
  • To discuss the mechanisms by which TM4SF5 influences cancer progression.
  • To highlight potential therapeutic strategies targeting TM4SF5.

Main Methods:

  • Review of in vitro and in vivo studies.
  • Analysis of TM4SF5 interactions with integrins.
  • Examination of TM4SF5-mediated signaling pathways.

Main Results:

  • TM4SF5 induces EMT via RhoA inactivation and p27kip1 stabilization.
  • TM4SF5-integrin crosstalk promotes cell migration, invasion, and loss of contact inhibition.
  • TM4SF5-integrin alpha5 interaction stimulates VEGF secretion and angiogenesis.

Conclusions:

  • TM4SF5 is a key regulator of cancer progression through integrin interactions.
  • Targeting the TM4SF5 extracellular domain can block cancer growth and metastasis.
  • TM4SF5-integrin cooperation is crucial in hepatocellular carcinogenesis, warranting further investigation.

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