Diversity of T cell receptor α and β chain genes expressed by human T cells specific for similar myelin basic protein peptide/major histocompatibility complexes
Tóm tắt
T cell receptor (TcR) α and β nucleotide sequences involved in the human autoreactivity to myelin basic protein (MBP) were studied by screening cDNA libraries derived from 11 independent T lymphocyte clones (TCC) established from multiple sclerosis patients and healthy donors. The TCC with defined MBP peptide specificity and HLA‐DR restriction expressed multiple TcR. Even TCC recognizing the same human MBP peptide [amino acids (aa) 139–153] in identical or very similar HLA‐DR context expressed diverse TcR. Two TCC which recognized peptide aa 139–153 equally well in the context of both HLA‐DR2a and ‐DR1 molecules used distinct TcR α but identical β chains.
The knowledge of TcR β and TcR α chain sequences of human MBP‐specific T cells will allow studies correlating structure and function of TcR and their targets in MBP autoreactivity. This may have an impact on the development of immunotherapies in multiple sclerosis.
Từ khóa
Tài liệu tham khảo
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