Divergent effects of calcineurin Aβ on regulatory and conventional T-cell homeostasis

Copyright © 2010 Elsevier Inc. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Clinical immunology (Orlando, Fla.). - 1999. - 138(2011), 3 vom: 28. März, Seite 321-30
1. Verfasser: Doetschman, Thomas (VerfasserIn)
Weitere Verfasser: Sholl, Allyson, Chen, Hwu dau rw, Gard, Connie, Hildeman, David A, Bommireddy, Ramireddy
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Clinical immunology (Orlando, Fla.)
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Cytokines Forkhead Transcription Factors Foxp3 protein, mouse Proto-Oncogene Proteins c-bcl-2 Transforming Growth Factor beta Calcineurin EC 3.1.3.16 protein phosphatase 3, catalytic subunit, beta isoform, mouse
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520 |a Calcineurin (CN) is a phosphatase that activates nuclear factor of activated T cells (NFAT). While the CN inhibitors cyclosporine A (CsA) and tacrolimus (FK506) can prevent graft rejection, they also cause inflammatory diseases. We investigated the role of calcineurin using mice deficient in the CN catalytic subunit Aβ (CNAβ). Cnab(-/-) mice exhibit defective thymocyte maturation, splenomegaly and hepatomegaly. Further, as Cnab(-/-) mice age, they exhibit spontaneous T-cell activation and enhanced production of proinflammatory cytokines (IL-4, IL-6, and IFNγ). FOXP3(+) T(reg) cells were significantly decreased in Cnab(-/-) mice likely contributing to increased T-cell activation. Interestingly, we found that CNAβ is critical for promotion of BCL-2 expression in FOXP3(+) T(reg) and for permitting TGFβ signaling, as TGFβ induces FOXP3 in control but not in Cnab(-/-) T-cells. Together, these data suggest that CNAβ is important for the production and maintenance of T(reg) cells and to ensure mature T-cell quiescence 
650 4 |a Journal Article 
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650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a Foxp3 protein, mouse  |2 NLM 
650 7 |a Proto-Oncogene Proteins c-bcl-2  |2 NLM 
650 7 |a Transforming Growth Factor beta  |2 NLM 
650 7 |a Calcineurin  |2 NLM 
650 7 |a EC 3.1.3.16  |2 NLM 
650 7 |a protein phosphatase 3, catalytic subunit, beta isoform, mouse  |2 NLM 
650 7 |a EC 3.1.3.16  |2 NLM 
700 1 |a Sholl, Allyson  |e verfasserin  |4 aut 
700 1 |a Chen, Hwu dau rw  |e verfasserin  |4 aut 
700 1 |a Gard, Connie  |e verfasserin  |4 aut 
700 1 |a Hildeman, David A  |e verfasserin  |4 aut 
700 1 |a Bommireddy, Ramireddy  |e verfasserin  |4 aut 
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