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Comparative analysis of murine T lymphocyte responses to cartilage proteoglycans

Authors
Journal
Journal of Autoimmunity
0896-8411
Publisher
Elsevier
Publication Date
Volume
4
Issue
5
Identifiers
DOI: 10.1016/0896-8411(91)90170-h

Abstract

Abstract Cartilage proteoglycans are large molecules consisting of several subregions each of which comprises homologous repeating subunits. Comparisons of murine primed popliteal lymph node responses to human cartilage proteoglycans in BALB and B10 congenic mice showed that the major histocompatibility complex (MHC) influences T cell responsiveness to this antigen. H-2 k and H-2 d were higher responders than H-2 b. Responses were MHC class II-restricted, and human cartilage proteoglycans were cross-reactive with mouse cartilage proteoglycans for a BALB c T cell line. The proportion of proteoglycan-specific T lymphocytes in BALB c primed popliteal lymph nodes was about 45% lower in females than males. These results show that in mice both MHC haplotype and sex can determine T lymphocyte responsiveness to cartilage proteoglycans. If the same mechanisms apply in humans they could be important in determining the HLA-DR haplotype associations and the predilection of rheumatoid arthritis for females.

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