Serine Phosphorylation of the STAT1 Transactivation Domain Promotes Autoreactive B Cell and Systemic Autoimmunity Development.
Serine Phosphorylation of the STAT1 Transactivation Domain Promotes Autoreactive B Cell and Systemic Autoimmunity Development.
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DOI:
10.4049/jimmunol.2000170
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发表时间:
2020-05-15
期刊:
影响因子:
--
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Although STAT1 tyrosine-701 phosphorylation (designated STAT1-pY701) is indispensable for STAT1 function, the requirement for STAT1 serine-727 phosphorylation (designated STAT1-pS727) during systemic autoimmune and anti-pathogen responses remains unclear. Using autoimmune-prone B6.Sle1b mice expressing a STAT1-S727A mutant in which serine is replaced by alanine, we report here that STAT1-pS727 promotes autoimmune antibody-forming cell (autoimmune AFC) and germinal center (GC) responses, driving autoantibody production and systemic lupus erythematosus (SLE) development. In contrast, STAT1-pS727 is not required for GC, follicular helper T (Tfh) cell and antibody responses to various foreign-antigens including pathogens. STAT1-pS727 is also not required for gut microbiota and dietary antigen-driven GC and Tfh responses in B6.Sle1b mice. By generating B cell-specific bone marrow (BM) chimeras, we demonstrate that STAT1-pS727 plays an important B cell-intrinsic role in promoting autoimmune AFC, GC and Tfh responses, leading to SLE-associated autoantibody production. Our analysis of TLR7-accelerated B6.Sle1b.Yaa SLE disease model expressing a STAT1-S727A mutant reveals STAT1-pS727-mediated regulation of autoimmune AFC and GC responses, and lupus nephritis (LN) development. Together, we identify previously unrecognized differential regulation of systemic autoimmune and anti-pathogen responses by STAT1-pS727. Our data implicate STAT1-pS727 as a therapeutic target for SLE without overtly affecting STAT1-mediated protection against pathogenic infections.
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DOI:
10.1084/jem.20151724
发表时间:
2016-05-02
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Jackson SW;Jacobs HM;Arkatkar T;Dam EM;Scharping NE;Kolhatkar NS;Hou B;Buckner JH;Rawlings DJ
通讯作者:
Rawlings DJ
DOI:
10.4049/jimmunol.1700770
发表时间:
2018-01-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Corradetti C;Jog NR;Cesaroni M;Madaio M;Caricchio R
通讯作者:
Caricchio R
影响因子:
4.4
作者:
Chodisetti, Sathi Babu;Fike, Adam J.;Rahman, Ziaur S. M.
通讯作者:
Rahman, Ziaur S. M.
影响因子:
7.3
作者:
Hara, Satoko;Sasaki, Takaharu;Ohno, Hiroshi
通讯作者:
Ohno, Hiroshi
影响因子:
7
作者:
Boisson-Dupuis S;Kong XF;Okada S;Cypowyj S;Puel A;Abel L;Casanova JL
通讯作者:
Casanova JL