T lymphocyte senescence is attenuated in Parkinson's disease.
dc.contributor.author | Kouli, Antonina | |
dc.contributor.author | Jensen, Melanie | |
dc.contributor.author | Papastavrou, Vanesa | |
dc.contributor.author | Scott, Kirsten M | |
dc.contributor.author | Kolenda, Claire | |
dc.contributor.author | Parker, Craig | |
dc.contributor.author | Solim, Imtiaz H | |
dc.contributor.author | Camacho, Marta | |
dc.contributor.author | Martin-Ruiz, Carmen | |
dc.contributor.author | Williams-Gray, Caroline H | |
dc.contributor.orcid | Kouli, Antonina [0000-0001-6553-6154] | |
dc.date.accessioned | 2021-11-22T14:37:29Z | |
dc.date.available | 2021-11-22T14:37:29Z | |
dc.date.issued | 2021-10-13 | |
dc.date.updated | 2021-11-22T14:37:28Z | |
dc.description.abstract | <h4>Background</h4>Immune involvement is well-described in Parkinson's disease (PD), including an adaptive T lymphocyte response. Given the increasing prevalence of Parkinson's disease in older age, age-related dysregulation of T lymphocytes may be relevant in this disorder, and we have previously observed changes in age-associated CD8<sup>+</sup> T cell subsets in mid-stage PD. This study aimed to further characterise T cell immunosenescence in newly diagnosed PD patients, including shifts in CD4<sup>+</sup> and CD8<sup>+</sup> subpopulations, and changes in markers of cellular ageing in CD8<sup>+</sup> T lymphocytes.<h4>Methods</h4>Peripheral blood mononuclear cells were extracted from the blood of 61 newly diagnosed PD patients and 63 age- and sex-matched controls. Flow cytometric analysis was used for immunophenotyping of CD8<sup>+</sup> and CD4<sup>+</sup> lymphocyte subsets, and analysis of recent thymic emigrant cells. Telomere length within CD8<sup>+</sup> T lymphocytes was assessed, as well as the expression of the telomerase reverse transcriptase enzyme (hTERT), and the cell-ageing markers p16<sup>INK4a</sup> and p21<sup>CIP1/Waf1</sup>.<h4>Results</h4>The number of CD8<sup>+</sup> TEMRA T cells was found to be significantly reduced in PD patients compared to controls. The expression of p16<sup>INK4a</sup> in CD8<sup>+</sup> lymphocytes was also lower in patients versus controls. Chronic latent CMV infection was associated with increased senescent CD8<sup>+</sup> lymphocytes in healthy controls, but this shift was less apparent in PD patients.<h4>Conclusions</h4>Taken together, our data demonstrate a reduction in CD8<sup>+</sup> T cell replicative senescence which is present at the earliest stages of Parkinson's disease. | |
dc.identifier.doi | 10.17863/CAM.78254 | |
dc.identifier.issn | 1742-2094 | |
dc.identifier.other | PMC8513368 | |
dc.identifier.other | 34645462 | |
dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/330811 | |
dc.language | eng | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | essn: 1742-2094 | |
dc.source | nlmid: 101222974 | |
dc.subject | T lymphocytes | |
dc.subject | Immunosenescence | |
dc.subject | Parkinson’s Disease | |
dc.subject | Ageing Markers | |
dc.title | T lymphocyte senescence is attenuated in Parkinson's disease. | |
dc.type | Article | |
prism.issueIdentifier | 1 | |
prism.publicationName | Journal of neuroinflammation | |
prism.volume | 18 | |
pubs.funder-project-id | medical research council (MR/R007446/1) | |
pubs.funder-project-id | michael j. fox foundation for parkinson's research (14912) | |
pubs.funder-project-id | Medical Research Council (MR/R007446/1) | |
rioxxterms.licenseref.uri | https://creativecommons.org/licenses/by/4.0/ | |
rioxxterms.version | VoR | |
rioxxterms.versionofrecord | 10.1186/s12974-021-02287-9 |
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