B and T cell tolerance and autoimmunity in autoantibody transgenic mice.
B and T cell tolerance and autoimmunity in autoantibody transgenic mice.
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自身抗体转基因小鼠的 B 和 T 细胞耐受性和自身免疫。
DOI:
10.1093/intimm/dxf064
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发表时间:
2002
影响因子:
4.4
通讯作者:
Mamula,MarkJ
中科院分区:
文献类型:
--
作者:
Yan,Jun;Mamula,MarkJ
One hallmark of systemic lupus erythematosus (SLE) is the presence of autoantibodies directed at a diverse group of proteins of the U1/Sm small nuclear ribonucleoprotein particles (snRNP). Patients with SLE and murine models of this disease generate high titers of affinity mature, isotype‐switched autoantibodies characteristic of T cell‐dependent immune responses. In this investigation, we made use of anti‐snRNP Ig transgenic mice (2‐12 Tg) to track regulation of autoreactive B cells in normal and autoimmune‐prone mice. Autoantibody studies demonstrated that the regulation of anti‐snRNP B cells is intact in non‐autoimmune Tg mice, but not in MRL‐lpr/lprmice. We further utilize autoreactive Tg B cells as antigen‐presenting cells (APC) and individual snRNP peptides to assess the presence of autoreactive T cells in the repertoire of non‐autoimmune and MRL‐lpr/lprmice. We found that Tg B cells can direct specific T cell tolerance in a non‐autoimmune‐prone (C57Bl/6) background, whereas the same autoantibody transgene in MRL‐lpr/lprmice drives T cell autoimmunity. Moreover, Tg B cell APC could stimulate autoreactive T cells from wild‐type (non‐Tg) C57Bl/6 mice, indicating a lack of tolerance induction in the absence of the autoantigenic‐presenting B cells. Thus, we have defined dual roles for autoantigen‐presenting B lymphocytes in stimulating self‐reactive T cells that inhabit the normal repertoire or, under some conditions, providing tolerance signals.
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影响因子:
4.4
作者:
SHLOMCHIK, MJ;ZHARHARY, D;WEIGERT, MG
通讯作者:
WEIGERT, MG
影响因子:
4.4
作者:
Owen Chan;M. Shlomchik
通讯作者:
Owen Chan;M. Shlomchik
DOI:
--
发表时间:
1994
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Fatenejad,S;Brooks,W;Schwartz,A;Craft,J
通讯作者:
Craft,J
DOI:
--
发表时间:
1997
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Wang,H;Shlomchik,MJ
通讯作者:
Shlomchik,MJ
DOI:
--
发表时间:
1989
期刊:
Cold Spring Harbor Symposia on Quantitative Biology
影响因子:
--
作者:
C. Goodnow;J. Crosbie;S. Adelstein;T. Lavoie;S. Smith‐Gill;D. Mason;H. Jorgensen;R. Brink;H. Pritchard;M. Loughnan
通讯作者:
M. Loughnan