Single-cell atlas of splenocytes reveals a critical role of a novel plasma cell‒specific marker Hspa13 in antibody class-switching recombination and somatic hypermutation.
Single-cell atlas of splenocytes reveals a critical role of a novel plasma cell‒specific marker Hspa13 in antibody class-switching recombination and somatic hypermutation.
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脾细胞的单细胞图谱揭示了一种新型浆细胞特异性标记物 Hspa13 在抗体类别转换重组和体细胞超突变中的关键作用。
DOI:
10.1016/j.molimm.2021.11.014
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发表时间:
2021-11
影响因子:
3.6
通讯作者:
Wang Renxi
中科院分区:
文献类型:
--
作者:
Zhai Bing;Liu Xiaoling;Xu Yaqi;Zhu Gaizhi;Zhou Shan;He Youdi;Wang Xiaoqian;Su Wenting;Han Gencheng;Wang Renxi
Our previous study had shown that member 13 (Hspa13) of heat shock protein family A (Hsp70) promotes plasma cell (PC) production and antibody secretion. To further explore Hspa13 expression and function, we combined single-cell RNA-sequencing and antigen receptor lineage (BCR) analysis to characterize sheep red cell‒primed splenocytes. The single-cell transcriptional profiles revealed that Hspa13 is specifically and highly expressed in PCs. These results suggest that Hspa13 is a novel PC-specific marker. In terms of its function, we found that the CD19cre-mediated conditional knock-out (cKO) of Hspa13 reduced the expression of Ebi3 and IL-10 in PCs. Ebi3 and IL-10 are important factors in IL-4‒secreting type 2 helper T cell (Th2) activation and differentiation. As expected, we found that the Hspa13 cKO reduced IL‒4-expressing follicular helper T (Tfh2) cells. Finally, the single-cell antigen receptor analysis demonstrated that the Hspa13 cKO reduced theAicda-mediated antibody class-switching recombination (CSR) and somatic hypermutation (SHM) in germinal centers (GCs) B cells. Altogether, the single-cell atlas of splenocytes revealed a critical indirect role for the novel PC-specific marker Hspa13 in CSR and SHM in GC B cells by promoting Ebi3 and IL-10 expression in PCs to induce IL-4-expressing Tfh2 cells. Further exploration of Hspa13 expression and function will provide valuable clues for how to use Hspa13 in the treatment of autoimmune diseases.
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影响因子:
4.9
作者:
Lin W;Zhang P;Chen H;Chen Y;Yang H;Zheng W;Zhang X;Zhang F;Zhang W;Lipsky PE
通讯作者:
Lipsky PE
影响因子:
5.5
作者:
I. Luzina;S. Atamas;C. Storrer;Ludmila C. daSilva;G. Kelsoe;J. Papadimitriou;B. Handwerger
通讯作者:
I. Luzina;S. Atamas;C. Storrer;Ludmila C. daSilva;G. Kelsoe;J. Papadimitriou;B. Handwerger
DOI:
10.1002/j.1460-2075.1994.tb06371.x
发表时间:
1994-03
期刊:
The EMBO Journal
影响因子:
--
作者:
G. Otterson;G. C. Flynn;R. Kratzke;R. Kratzke;A. Coxon;P. Johnston;F. Kaye;F. Kaye
通讯作者:
G. Otterson;G. C. Flynn;R. Kratzke;R. Kratzke;A. Coxon;P. Johnston;F. Kaye;F. Kaye
影响因子:
3.6
作者:
Ma, Ning;Fang, Ying;Wang, Renxi
通讯作者:
Wang, Renxi
影响因子:
64.8
作者:
Reimold, AM;Iwakoshi, NN;Glimcher, LH
通讯作者:
Glimcher, LH