Journal
CURRENT OPINION IN IMMUNOLOGY
Volume 29, Issue -, Pages 105-111Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.coi.2014.05.007
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Funding
- Canadian Institutes of Health Research (CIHR) [106634, 106701]
- Universite de Sherbrooke
- Research Center on Aging
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Causes for immunosenescence and inflamm-aging have to be established. Efficient function of the immune system requires homeostatic regulation from receptor recognition of antigenic challenge to cell responses and adaptation to its changing environment. It is reasonable to assume that one of the most important molecular causes of immunosenescence is alteration in the regulation of signaling pathways. Indeed, alterations in feed-forward and negative feedback (inhibitory) signaling have been highlighted in all cells involved in the immune response including short-lived (neutrophils) and long-lived (T lymphocytes) cells. These dysregulations tip the balance in favor of altered (less efficient) function of the immune system. In this review, we summarize our knowledge on signal transduction changes in the aging immune system and propose a unifying mechanism as one of the causes of immunosenescence. Modulation of these pathways with aging represents a major challenge to restore the immune response to functional levels.
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