Article (Scientific journals)
Inositol 1,4,5-trisphosphate 3-kinase B (Itpkb) controls survival, proliferation and cytokine production in mouse peripheral T cells
Pouillon, Valérie; Maréchal, Yoann; Frippiat, Christophe et al.
2013In Advances in Biological Regulation, 53 (1), p. 39-50
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Keywords :
T lymphocyte; inositol phosphate; kinase
Abstract :
[en] Mice genetically-deficient for the B isoform of the inositol 1,4,5-trisphosphate 3-kinase (or Itpkb) have a severe defect in thymocytes differentiation and thus lack peripheral T cells. In order to study the functional role of Itpkb in peripheral T cells, we constructed a new mouse where a transgene encoding mouse Itpkb is specifically and transiently expressed in thymocytes of Itpkb-/- mice. This allows a partial rescue of mature thymocyte/T cell differentiation and thus the functional characterization of peripheral T cells lacking Itpkb. We show here that Itpkb-/- CD4+ and CD8+ peripheral T cells present important functional alterations. Indeed, an increased activated/memory phenotype as well as a decreased proliferative capacity and survival were detected in these T cells. These Itpkb-deficient peripheral T cells have also an increased capacity to secrete cytokines upon stimulation. Together, our present results define the important role of Itpkb in peripheral mature T cell fate and function in mouse, suggesting a potential role for Itpkb in autoimmunity.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Pouillon, Valérie;  Institut de Recherches Interdisciplinaires en Biologie Humaine et Moléculaire (IRIBHM), Belgium
Maréchal, Yoann;  Université Libre de Bruxelles - ULB > Institut de Biologie et de Médecine Moléculaires (IBMM), Faculté de Médecine
Frippiat, Christophe;  Université Libre de Bruxelles - ULB > Institut de Biologie et de Médecine Moléculaires (IBMM), Faculté de Médecine
Erneux, Christophe;  Institut de Recherches Interdisciplinaires en Biologie Humaine et Moléculaire (IRIBHM), Belgium
Schurmans, Stéphane  ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Biochimie métabolique vétérinaire
Language :
English
Title :
Inositol 1,4,5-trisphosphate 3-kinase B (Itpkb) controls survival, proliferation and cytokine production in mouse peripheral T cells
Publication date :
2013
Journal title :
Advances in Biological Regulation
ISSN :
2212-4926
eISSN :
2212-4934
Publisher :
Elsevier
Volume :
53
Issue :
1
Pages :
39-50
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 August 2012

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