JAM-A regulates epithelial proliferation through Akt/beta-catenin signallingShow others and affiliations
2011 (English)In: EMBO Reports, ISSN 1469-221X, E-ISSN 1469-3178, Vol. 12, no 4, p. 314-20Article in journal (Refereed) Published
Abstract [en]
Expression of the tight junction protein junctional adhesion molecule-A (JAM-A) has been linked to proliferation and tumour progression. However, a direct role for JAM-A in regulating proliferative processes has not been shown. By using complementary in vivo and in vitro approaches, we demonstrate that JAM-A restricts intestinal epithelial cell (IEC) proliferation in a dimerization-dependent manner, by inhibiting Akt-dependent beta-catenin activation. Furthermore, IECs from transgenic JAM-A(-/-)/beta-catenin/T-cell factor reporter mice showed enhanced beta-catenin-dependent transcription. Finally, inhibition of Akt reversed colonic crypt hyperproliferation in JAM-A-deficient mice. These data establish a new link between JAM-A and IEC homeostasis.
Place, publisher, year, edition, pages
Wiley-Blackwell Publishing Inc., 2011. Vol. 12, no 4, p. 314-20
Keywords [en]
junctional adhesion molecule; Akt; b-catenin; cell proliferation; tight junction
National Category
Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:liu:diva-141664DOI: 10.1038/embor.2011.16ISI: 000289073200010PubMedID: 21372850Scopus ID: 2-s2.0-79953312227ISBN: 1469-3178 (Electronic) 1469-221X (Linking) OAI: oai:DiVA.org:liu-141664DiVA, id: diva2:1149700
Note
Nava, Porfirio Capaldo, Christopher T Koch, Stefan Kolegraff, Keli Rankin, Carl Robert Farkas, Attila E Feasel, Mattie E Li, Linheng Addis, Caroline Parkos, Charles A Nusrat, Asma eng R01 DK079392/DK/NIDDK NIH HHS/ DK55679/DK/NIDDK NIH HHS/ R29 DK055679/DK/NIDDK NIH HHS/ T32 GM008169/GM/NIGMS NIH HHS/ DK72564/DK/NIDDK NIH HHS/ DK64399/DK/NIDDK NIH HHS/ R01 DK072564/DK/NIDDK NIH HHS/ DK53202/DK/NIDDK NIH HHS/ R24 DK064399/DK/NIDDK NIH HHS/ DK59888/DK/NIDDK NIH HHS/ DK79392/DK/NIDDK NIH HHS/ R01 DK055679/DK/NIDDK NIH HHS/ R01 DK061379/DK/NIDDK NIH HHS/ R01 DK059888/DK/NIDDK NIH HHS/ DK61379/DK/NIDDK NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't England 2011/03/05 06:00 EMBO Rep. 2011 Apr;12(4):314-20. doi: 10.1038/embor.2011.16. Epub 2011 Mar 4.
2017-10-162017-10-162018-02-06Bibliographically approved