Skewed Distribution of Proinflammatory CD4+CD28null T Cells in Rheumatoid Arthritis
Overview
Authors
Affiliations
Expanded populations of CD4+ T cells lacking the co-stimulatory molecule CD28 (CD4+CD28null T cells) have been reported in several inflammatory disorders. In rheumatoid arthritis, increased frequencies of CD4+CD28null T cells in peripheral blood have previously been associated with extra-articular manifestations and human cytomegalovirus (HCMV) infection, but their presence in and contribution to joint manifestations is not clear. In the present article we investigated the distribution of CD4+CD28null T cells in the synovial membrane, synovial fluid and peripheral blood of RA patients, and analysed the association with erosive disease and anti-citrullinated protein antibodies. CD4+CD28null T cells were infrequent in the synovial membrane and synovial fluid, despite significant frequencies in the circulation. Strikingly, the dominant TCR-Vbeta subsets of CD4+CD28null T cells in peripheral blood were often absent in synovial fluid. CD4+CD28null T cells in blood and synovial fluid showed specificity for HCMV antigens, and their presence was clearly associated with HCMV seropositivity but not with anti-citrullinated protein antibodies in the serum or synovial fluid, nor with erosive disease. Together these data imply a primary role for CD4+CD28null T cells in manifestations elsewhere than in the joints of patients with HCMV-seropositive rheumatoid arthritis.
Xu Y, Wang Z, Li S, Su J, Gao L, Ou J Sci China Life Sci. 2024; 68(2):328-353.
PMID: 39231902 DOI: 10.1007/s11427-024-2695-x.
Senescent T Cells in Age-Related Diseases.
Yu P, Zhou M, Liu Y, Du J Aging Dis. 2024; .
PMID: 38502582 PMC: 11745454. DOI: 10.14336/AD.2024.0219.
Hodge G, Jersmann H, Holmes M, Asare P, Roscioli E, Reynolds P Biology (Basel). 2023; 12(9).
PMID: 37759660 PMC: 10525726. DOI: 10.3390/biology12091261.
Giachi A, Cugno M, Gualtierotti R Front Cardiovasc Med. 2022; 9:1012661.
PMID: 36352850 PMC: 9637771. DOI: 10.3389/fcvm.2022.1012661.
Kundura L, Cezar R, Andre S, Campos-Mora M, Lozano C, Vincent T Front Immunol. 2022; 13:1029006.
PMID: 36341327 PMC: 9630742. DOI: 10.3389/fimmu.2022.1029006.