Title |
Downregulation of inhibitory SRC Homology 2 Domain-containing Phosphatase-1 (SHP-1) leads to recovery of T cell responses in elderly
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Published in |
Cell Communication and Signaling, January 2014
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DOI | 10.1186/1478-811x-12-2 |
Pubmed ID | |
Authors |
Aurélie Le Page, Carl Fortin, Hugo Garneau, Nancy Allard, Krassimira Tsvetkova, Crystal Tze Ying Tan, Anis Larbi, Gilles Dupuis, Tamas Fülöp |
Abstract |
Immune responses are generally impaired in aged mammals. T cells have been extensively studied in this context due to the initial discovery of their reduced proliferative capacity with aging. The decreased responses involve altered signaling events associated with the early steps of T cell activation. The underlying causes of these changes are not fully understood but point to alterations in assembly of the machinery for T cell activation. Here, we have tested the hypothesis that the T cell pool in elderly subjects displayed reduced functional capacities due to altered negative feedback mechanisms that participate in the regulation of the early steps of T cell activation. Such conditions tip the immune balance in favor of altered T cell activation and a related decreased response in aging. |
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