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Title 

The lupus susceptibility locus Sle1 facilitates the peripheral development and selection of anti-DNA B cells through impaired receptor editing

 

Lupus 민감유전자인 Sle1이receptor editing에 손상을 초래하여 말초에서의 Anti-DNA B 세포의 발달과 선택을 촉진

Authors 

S H ChangT J KimY J KimY LiuS Y MinM J ParkH S ParkS K LeeKi Hoan NamH Y KimC MohanH R Kim

Publisher 

American Association of Immunologists

Issue Date 

2014

Citation 

Journal of Immunology, vol. 192, no. 12, pp. 5579-5585

Abstract 

Systemic lupus erythematosus is characterized by the spontaneous production of IgG autoantibodies in patients and lupus-prone mice. In this study, we investigated the effect of the Sle1 lupus susceptibility locus on the peripheral development of 56R+ anti-DNA transgenic B cells by tracking 56R + B cells in mice without (B6.56R) or with (B6.Sle1.56R) the Sle1 locus. Compared with B6.56R mice, B6.Sle1.56R mice exhibited increased class-switched IgG2a anti-DNA Abs in their serum, encoded by the transgene. Interestingly, within the spleen, Sle1 facilitated the development of these cells into clusters of IgG2a class-switched B cells juxtaposed to CD4 + T cells within extrafollicular sites. Through sequence analysis of B cell hybridomas, we also found that B cells from B6.Sle1.56R mice are inefficient at Ig H and L chain editing. Thus, the Ig H chains in Sle1.56R + B cells are partnered more often with cationic L chains that facilitate DNA binding. Taken together, these findings indicate that the Sle1 lupussusceptibility locus may facilitate the emergence of anti-DNA B cells by subduing BCR revision and possibly by shaping the extrafollicular development of effector B cells, although the precise molecular mechanisms await further study.

ISSN 

0022-1767

Link 

http://dx.doi.org/10.4049/jimmunol.1201558

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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