Citations 1
Premature telomeric loss in rheumatoid arthritis is genetically determined and involves both myeloid and lymphoid cell lineages
Schönland, Stefan , López, Consuelo, Widmann, Thomas, Zimmer, Julia, Bryl, Ewa , Weyand, Cornelia M. , Goronzy, Jörg J. , Schönland, Stefan
Proceedings of the National Academy of Sciences | November 16, 2003 | Volume: 100 | Issue: 23 | Pages: 13471-13476
In rheumatoid arthritis, peripheral blood T cells have age-inappropriate telomeric erosion. We examined whether HLA-DRB1 * 04 alleles, the major susceptibility genes for this disease, confer risk for T cell senescence. In healthy individuals, HLA-DRB1 * 04 alleles were associated with excessive loss of telomeres in CD4 + T cells. Accelerated telomeric erosion occurred during the first two decades of life and was followed by reduced homeostatic T cell proliferation during adulthood. Premature telomeric loss also affected granulocytes, suggesting that the hematopoietic stem cell is the primary target. Telomeric repair mechanisms were intact in HLA-DRB1 * 04 + donors. We propose that HLA-DRB1 * 04 alleles or genes in linkage disequilibrium regulate stem cell replication and contribute to the accumulation of senescent and autoreactive T cells in rheumatoid arthritis.