期刊
EUROPEAN JOURNAL OF IMMUNOLOGY
卷 52, 期 2, 页码 197-203出版社
WILEY
DOI: 10.1002/eji.202149279
关键词
autoantibody; autoimmunity; B cells; MHC; T follicular helper
类别
资金
- DFG [MA 2273/14-1, 398859914 (EH 221/10-1), 400912066 (EH 221/11-1), 390884018, EXC 2167]
- [CRU303]
MHC haplotypes play a crucial role in the development of autoimmune diseases, modulating autoreactive B cell responses and facilitating the production of pathogenic IgG autoantibodies with reduced pathogenicity.
Genome-wide association studies (GWAS) have identified many genes that are associated with the development of certain autoimmune disorders, but the MHC haplotypes still represent the most prevalent genetic risk factor for many autoimmune diseases. The mechanisms by which MHC-associated genetic susceptibility translates into B cell autoimmunity and the development of autoimmune diseases are complex. There is increasing evidence that the MHC haplotype modulates autoreactive B cell responses in multiple ways. Instead of merely inhibiting the production of IgG autoantibodies and mediating complete immunological tolerance, the non-permitting MHC haplotypes seem to facilitate the production of IgG autoantibodies exhibiting Fc glycosylation patterns that are associated with reduced pathogenicity and a protective cytokine profile of T follicular helper (Tfh) cells. Here, we discuss mechanisms linking MHC haplotypes to the production of pathogenic IgG autoantibodies, which could be relevant for the development of improved diagnosis, particularly in the context of individual medicine.
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