Journal article
Aging affects initiation and continuation of T cell proliferation
Mechanisms of ageing and development, v 128(4), pp 332-339
2007
PMID: 17383712
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Aging is associated with a decline in immune responses, particularly within the T cell compartment. While the expansion of specific T cells in response to virus infections is consistently decreased in aged mice, the differences in T cell activation between young and aged mice as demonstrated in each round of proliferation remain poorly defined. In the present study, we utilized the T cell mitogen, ConA, to explore if fewer T cells of aged mice initiate proliferation upon mitogen stimulation or if similar numbers of T cells of aged mice begin proliferation but undergo fewer rounds of division. We also examined whether these age-associated changes in proliferation are reflected by differences in T cell activation by comparing activation markers (CD25, CD69, CD44, and CD62L) on T cells of young and aged mice at each round of proliferation. Not only was the kinetics of the expression of these markers greatly different between young and aged mice on the entire CD8 T cell population, but also at each round of proliferation. Our results demonstrate that a larger percentage of CD8 T cells of aged mice do not proliferate at all upon stimulation. Of the CD8 T cells of aged mice that do proliferate, a larger percentage start later and stop sooner. These results suggest that multiple levels of alteration may need to be considered when trying to maximize the immune response of aged individuals.
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Details
- Title
- Aging affects initiation and continuation of T cell proliferation
- Creators
- Jiu JiangDiara GrossPhilip ElbaumDonna M Murasko
- Publication Details
- Mechanisms of ageing and development, v 128(4), pp 332-339
- Publisher
- Elsevier Ireland Ltd
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Microbiology and Immunology; Biology
- Web of Science ID
- WOS:000246628800005
- Scopus ID
- 2-s2.0-34247136761
- Other Identifier
- 991014877670504721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Cell Biology
- Geriatrics & Gerontology