Title |
Annexin A6 regulates interleukin‐2‐mediated T‐cell proliferation
|
---|---|
Published in |
Immunology & Cell Biology, March 2016
|
DOI | 10.1038/icb.2016.15 |
Pubmed ID | |
Authors |
Rhea Cornely, Abigail H Pollock, Carles Rentero, Sarah E Norris, Anna Alvarez‐Guaita, Thomas Grewal, Todd Mitchell, Carlos Enrich, Stephen E Moss, Robert G Parton, Jérémie Rossy, Katharina Gaus |
Abstract |
Annexin A6 (AnxA6) has been implicated in cell signalling by contributing to the organisation of the plasma membrane. Here, we examined whether AnxA6 regulates signalling and proliferation in T cells. We used a contact hypersensitivity model to immune challenge wild-type (WT) and AnxA6(-/-) mice and found that the in vivo proliferation of CD4+ T cell, but not CD8+ T cells, was impaired in AnxA6(-/-) relative to WT mice. However, T cell migration and signalling through the T cell receptor (TCR) ex vivo was similar between T cells isolated from AnxA6(-/-) and WT mice. In contrast, interleukin-2 (IL-2) signalling was reduced in AnxA6(-/-) compared to WT T cells. Further, AnxA6-deficient T cells had reduced membrane order and cholesterol levels. Taken together, our data suggest that AnxA6 regulates IL-2 homeostasis and sensitivity in T cells by sustaining a lipid raft-like membrane environment.Immunology and Cell Biology accepted article preview online, 08 February 2016. doi:10.1038/icb.2016.15. |
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