Journal
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
Volume 524, Issue 1, Pages 64-70Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.abb.2012.01.009
Keywords
Claudin-4; Cancer; Clostridium perfringens enterotoxin (CPE); Tight junctions
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Funding
- Deutsche Krebshilfe
- Deutsche Forschungsgemeinschaft (DFG) [KFO210]
- German Ministry of Education and Research (BMBF) [PKB-01GS08]
- European Union
- state of Hessen
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Background: Intercellular junctional complexes such as adherens junctions and tight junctions are critical regulators of cellular polarity, paracellular permeability and metabolic and structural integrity of cellular networks. Abundant expression analysis data have yielded insights into the complex pattern of differentially expressed cell-adhesion proteins in epithelial cancers and provide a useful platform for functional, preclinical and clinical evaluation of novel targets. Scope of review: This review will focus on the role of claudin-4, an integral constituent of tight junctions, in the pathophysiology of epithelial malignancies with particular focus pancreatic cancer, and its potential applicability for prognostic, diagnostic and therapeutic approaches. Major conclusions: Claudin-4 expression is widely dysregulated in epithelial malignancies and in a number of premalignant precursor lesions. Although the functional implications are only starting to unravel, claudin-4 seems to play an important role in tumour cell invasion and metastasis, and its dual role as receptor of Clostridium perfringens enterotoxin (CPE) opens exciting avenues for molecular targeted approaches. General significance: Claudin-4 constitutes a promising molecular marker for prognosis, diagnosis and therapy of epithelial malignancies. (C) 2012 Elsevier Inc. All rights reserved.
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