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Semin Cell Dev Biol. 2015 Jun;42:58-65. doi: 10.1016/j.semcdb.2015.05.001. Epub 2015 May 27.

Claudins and cancer: Fall of the soldiers entrusted to protect the gate and keep the barrier intact.

Author information

1
Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198-5870, United States.
2
Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198-5870, United States. Electronic address: Punita.dhawan@unmc.edu.

Abstract

The role of the tight junctions (TJ) in controlling paracellular traffic of ions and molecules, through the regulation of claudin proteins, is now established. However, it has also become increasingly evident that claudin proteins, as integral components of the TJs, play crucial role in maintaining the cell-cell integrity. In conformity, deregulation of claudin expression and cellular distribution in cancer tissues has been widely documented and correlated with cancer progression and metastasis. However, this correlation is not unidirectional and rather suggests tissue specific regulations. Irrespective, if the widely described correlations between altered claudin expression and cancer initiation/progression could be established, they may serve as important markers for prognostic purposes and potential therapeutic targets. In this review, we summarize data from screening of the cancer tissues, manipulation of claudin expression in cells and animals subjected to cancer models, and how claudins are regulated in cancer. The focus of this article remains analysis of the association between cancer and the claudins and to decipher clinical relevance.

KEYWORDS:

Carcinogenesis; Claudin; Epithelial to mesenchymal transition (EMT); Inflammation; Metastasis; Tight junction

PMID:
26025580
DOI:
10.1016/j.semcdb.2015.05.001
[Indexed for MEDLINE]

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