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Impaired Proliferation and Th1 Differentiation of CD4+ T Cells of SHPS-1 Mutant Mice

フォーマット:
論文
責任表示:
Kaneko, Yuka ; Kaneko, Yoriaki ; Ohnishi, Hiroshi ; Tomizawa, Takeshi ; Okajo, Jun ; Saito, Yasuyuki ; Okuzawa, Chie ; Murata, Yoji ; Okazawa, Hideki ; Nojima, Yoshihisa ; Okamoto, Koichi ; Matozaki, Takashi
言語:
英語
出版情報:
北関東医学会, 2008-05-01
著者名:
Kaneko, Yuka
Kaneko, Yoriaki
Ohnishi, Hiroshi
Tomizawa, Takeshi
Okajo, Jun
Saito, Yasuyuki
Okuzawa, Chie
Murata, Yoji
Okazawa, Hideki
Nojima, Yoshihisa
Okamoto, Koichi
Matozaki, Takashi
続きを見る
掲載情報:
The Kitakanto medical journal = 北関東医学
ISSN:
1343-2826  CiNii Research  Webcat Plus  JAIRO
巻:
58
通号:
2
開始ページ:
133
終了ページ:
139
バージョン:
VoR
概要:
application/pdf<br />Journal Article<br />Background & Aims: SHPS-1 is a transmembrane protein that binds the protein tyrosine phosphatases \nSHP-1 and SHP-2 through its cytoplasmic region. It is highly expressed on the surf ace of CD11c+\ndendritic cells (DCs) and macrophages. We have recently shown that priming of CD4+T cells by DCs \nis markedly impaired in mice that express a mutant form of SHPS-1 lacking most of the cytoplasmic \nregion. We have now evaluated further the functions of CD4+T cells derived from SHPS-1 mutant mice. \nMethods: The expression of cell surface molecules on CD4+T cells was examined by flow cytometry. \nThe proliferation of CD4+T cells was measured by[3H]thymidine incorporation. Cytokine production \nby CD4+T cells was measured by ELISA. Results: SHPS-1 is expressed at low level on CD4+T \ncells of wild-type mice. The T cell receptor (TCR)-stimulated proliferation of CD4+T cells from \nSHPS-1 mutant mice was markedly decreased, whereas the TCR-stimulated production of IL-2 and \nIFN-γ by these cells was markedly increased, compared with those apparent with wild-type cells. \nDifferentiation of CD4+T cells from SHPS-1 mutant mice into Th1 cells was also impaired. Conclusions: Present results suggest that SHPS-1 is essential for proper regulation of CD4+T cell functions. 続きを見る
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