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Publication Detail
Proper E-cadherin membrane location in colon requires Dab2 and it modifies by inflammation and cancer
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Vazquez-Carretero MD, García-Miranda P, Balda MS, Matter K, Ilundáin AA, Peral MJ
  • Publication date:
  • Journal:
    Journal of Cellular Physiology
  • Status:
  • Print ISSN:
© 2020 Wiley Periodicals LLC We reported that Disabled-2 (Dab2) is located at the apical membrane in suckling rat intestine. Here, we discovered that, in colon of suckling and adult mouse and of adult human, Dab2 is only at lateral crypt cell membrane and colocalized with E-cadherin. Dab2 depletion in Caco-2 cells led to E-cadherin internalization indicating that its membrane location requires Dab2. In mice, we found that 3 days of dextran sulfate sodium-induced colitis increased Dab2/E-cadherin colocalization, which was decreased as colitis progressed to 6 and 9 days. In agreement, Dab2/E-cadherin colocalization increased in human mild and severe ulcerative colitis and in polyps, being reduced in colon adenocarcinomas, which even showed epithelial Dab2 absence and E-cadherin delocalization. Epithelial Dab2 decrement preceded that of E-cadherin. We suggest that Dab2 by inhibiting E-cadherin internalization, stabilizes adherens junctions, and its absence from the epithelium may contribute to development of colon inflammation and cancer.
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