HLA-DR3 restricted environmental epitopes from the bacterium Clostridium tetani have T cell cross-reactivity to the SLE-related autoantigen SmD.
HLA-DR3 restricted environmental epitopes from the bacterium Clostridium tetani have T cell cross-reactivity to the SLE-related autoantigen SmD.
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DOI:
10.3389/fimmu.2022.928374
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发表时间:
2022
影响因子:
7.3
通讯作者:
Fu, Shu Man
中科院分区:
文献类型:
--
作者:
Zhao, Zhenhuan;Anderson, Ashley N.;Kannapell, Carol C.;Kwok, William W.;Gaskin, Felicia;Fu, Shu Man
关键词:
HLA-DR3 (DR3) is one of the dominant HLA-DR alleles associated with systemic lupus erythematosus (SLE) susceptibility. Our previous studies showed multiple intramolecular DR3 restricted T cell epitopes in the Smith D (SmD) protein, from which we generated a non-homologous, bacterial epitope mimics library. From this library we identified ABC247-261 Mimic as one new DR3 restricted bacterial T cell epitope from the ABC transporter ATP-binding protein in Clostridium tetani. It activated and induced autoreactive SmD66-80-specific T cells and induced autoantibodies to lupus-related autoantigens in vivo. Compared to healthy donors, SLE patients have a greater percentage of cross-reactive T cells to ABC247-261 Mimic and SmD66-80. In addition, we analyzed the ability of single DR3 restricted Tetanus toxoid (TT) T cell epitopes to induce autoimmune T cells. We found that the immunodominant TT epitope TT826-845 stimulated SmD66-80 reactive T cells but failed to induce persistent anti-SmD autoantibodies compared to the ABC247-261 Mimic. Thus, exposure to the ABC247-261 Mimic epitope may contribute to autoimmunity in susceptible DR3 individuals.
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影响因子:
3
作者:
Gerstner, Christina;Turcinov, Sara;Malmstrom, Vivianne
通讯作者:
Malmstrom, Vivianne
DOI:
10.1007/978-1-4939-9728-2_2
发表时间:
2019-01-01
期刊:
IN VITRO DIFFERENTIATION OF T-CELLS: METHODS AND PROTOCOLS
影响因子:
--
作者:
Flynn, Jacqueline;Gorry, Paul
通讯作者:
Gorry, Paul
影响因子:
15.9
作者:
Novak, EJ;Liu, AW;Kwok, WW
通讯作者:
Kwok, WW
影响因子:
3.3
作者:
Massilamany, Chandirasegaran;Steffen, David;Reddy, Jay
通讯作者:
Reddy, Jay
影响因子:
158.5
作者:
Arbuckle, MR;McClain, MT;Harley, JB
通讯作者:
Harley, JB