Abstract
Immunosenescence is characterized by a peculiar remodeling of the immune system, mainly induced by lifelong antigenic burden and oxidative stress. Apoptosis or programmed cell death plays a central role in the ageing process. Both recurrent antigenic stimulations and oxidative metabolism by-products, impinging upon the immune system, modify the apoptotic capability of lymphocytes, driving immunosenescence. The apoptosis remodeling, in addition to inflamm-ageing, i.e. the upregulation of anti-stress responses and inflammatory cytokines, represents one of the major determinants of ageing rate and longevity, as well as of the most common age-related diseases. The cells of the immune system undergo two different kinds of apoptotic processes: activation-induced cell death (AICD), geared towards the elimination of unnecessary lymphocytes following clonal expansion, and damage-induced cell death (DICD), particularly important for preventing the onset of neoplastic proliferations. During senescence these apoptotic pathways are differentially modulated, with variable impacts on the ageing process. A correct modulation of apoptosis may be useful for prolonging the lifespan or at least reducing age-related degenerative, inflammatory and neoplastic diseases whose incidence increases with age. This review focuses on the role of AICD and DICD dysfunction in the ageing process and highlights emerging anti-ageing therapeutical strategies offered by apoptosis re-modulation. The challenge for the future is to identify factors and signals that regulate apoptotic processes and determine if selective apoptosis manipulation in specific lymphocyte subsets could preserve immune function in the elderly, contributing to successful ageing.
Keywords: Immunosenescence, apoptosis, therapeutic intervention
Current Medicinal Chemistry
Title: Apoptosis Remodeling in Immunosenescence: Implications for Strategies to Delay Ageing
Volume: 14 Issue: 13
Author(s): Massimo De Martinis, Claudio Franceschi, Daniela Monti and Lia Ginaldi
Affiliation:
Keywords: Immunosenescence, apoptosis, therapeutic intervention
Abstract: Immunosenescence is characterized by a peculiar remodeling of the immune system, mainly induced by lifelong antigenic burden and oxidative stress. Apoptosis or programmed cell death plays a central role in the ageing process. Both recurrent antigenic stimulations and oxidative metabolism by-products, impinging upon the immune system, modify the apoptotic capability of lymphocytes, driving immunosenescence. The apoptosis remodeling, in addition to inflamm-ageing, i.e. the upregulation of anti-stress responses and inflammatory cytokines, represents one of the major determinants of ageing rate and longevity, as well as of the most common age-related diseases. The cells of the immune system undergo two different kinds of apoptotic processes: activation-induced cell death (AICD), geared towards the elimination of unnecessary lymphocytes following clonal expansion, and damage-induced cell death (DICD), particularly important for preventing the onset of neoplastic proliferations. During senescence these apoptotic pathways are differentially modulated, with variable impacts on the ageing process. A correct modulation of apoptosis may be useful for prolonging the lifespan or at least reducing age-related degenerative, inflammatory and neoplastic diseases whose incidence increases with age. This review focuses on the role of AICD and DICD dysfunction in the ageing process and highlights emerging anti-ageing therapeutical strategies offered by apoptosis re-modulation. The challenge for the future is to identify factors and signals that regulate apoptotic processes and determine if selective apoptosis manipulation in specific lymphocyte subsets could preserve immune function in the elderly, contributing to successful ageing.
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Cite this article as:
De Martinis Massimo, Franceschi Claudio, Monti Daniela and Ginaldi Lia, Apoptosis Remodeling in Immunosenescence: Implications for Strategies to Delay Ageing, Current Medicinal Chemistry 2007; 14 (13) . https://dx.doi.org/10.2174/092986707780831122
DOI https://dx.doi.org/10.2174/092986707780831122 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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