Article (Scientific journals)
SHIP2 signaling in normal and pathological situations: Its impact on cell proliferation.
Elong Edimo, W; Schurmans, Stéphane; Roger, PP et al.
2014In Advances in Biological Regulation, 54, p. 142-151
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Keywords :
5-phosphatase; cell proliferation; cancer
Abstract :
[en] Phosphoinositide 5-phosphatases are critical enzymes in modulating the concentrations of PI(3,4,5)P3, PI(4,5)P2 and PI(3,5)P2. The SH2 domain containing inositol 5-phosphatases SHIP1 and SHIP2 belong to this family of enzymes that dephosphorylate the 5 position of PI(3,4,5)P3 to produce PI(3,4)P2. Data obtained in zebrafish and in mice have shown that SHIP2 is critical in development and growth. Exome sequencing identifies mutations in the coding region of SHIP2 as a cause of opsismodysplasia, a severe but rare chondrodysplasia in human. SHIP2 has been reported to have both protumorigenic and tumor suppressor function in human cancer very much depending on the cell model. This could be linked to the relative importance of PI(3,4)P2 (a product of SHIP2 phosphatase activity) which is also controlled by the PI 4-phosphatase and tumor suppressor INPP4B. In the glioblastoma cell line 1321 N1, that do not express PTEN, lowering SHIP2 expression has an impact on the levels of PI(3,4,5)P3, cell morphology and cell proliferation. It positively stimulates cell proliferation by decreasing the expression of key regulatory proteins of the cell cycle such as p27. Together the data point out to a role of SHIP2 in development in normal cells and at least in cell proliferation in some cancer derived cells.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Elong Edimo, W;  Interdisciplinary Research Institute (IRIBHM), Université Libre de Bruxelles, Campus Erasme, Bldg C, 808 Route de Lennik, 1070 Brussels, Belgium
Schurmans, Stéphane  ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Biochimie métabolique vétérinaire
Roger, PP;  Interdisciplinary Research Institute (IRIBHM), Université Libre de Bruxelles, Campus Erasme, Bldg C, 808 Route de Lennik, 1070 Brussels, Belgium
Erneux, C;  Interdisciplinary Research Institute (IRIBHM), Université Libre de Bruxelles, Campus Erasme, Bldg C, 808 Route de Lennik, 1070 Brussels, Belgium
Language :
English
Title :
SHIP2 signaling in normal and pathological situations: Its impact on cell proliferation.
Publication date :
2014
Journal title :
Advances in Biological Regulation
ISSN :
2212-4926
eISSN :
2212-4934
Publisher :
Elsevier
Volume :
54
Pages :
142-151
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 October 2013

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