Impaired Proliferation and Th1 Differentiation of CD4+ T Cells of SHPS-1 Mutant Mice
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概要
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Background & Aims: SHPS-1 is a transmembrane protein that binds the protein tyrosine phosphatases SHP-1 and SHP-2 through its cytoplasmic region. It is highly expressed on the surface of CD11c+dendritic cells (DCs) and macrophages. We have recently shown that priming of CD4+T cells by DCs is markedly impaired in mice that express a mutant form of SHPS-1 lacking most of the cytoplasmic region. We have now evaluated further the functions of CD4+T cells derived from SHPS-1 mutant mice. Methods: The expression of cell surface molecules on CD4+T cells was examined by flow cytometry. The proliferation of CD4+T cells was measured by[3H]thymidine incorporation. Cytokine production by CD4+T cells was measured by ELISA. Results: SHPS-1 is expressed at low level on CD4+T cells of wild-type mice. The T cell receptor (TCR)-stimulated proliferation of CD4+T cells from SHPS-1 mutant mice was markedly decreased, whereas the TCR-stimulated production of IL-2 and IFN-γ by these cells was markedly increased, compared with those apparent with wild-type cells. Differentiation 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.
- 北関東医学会の論文
- 2008-05-01
著者
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Nojima Yoshihisa
Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine
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Okamoto Koichi
Deparment Of Neurology Gunma University School Of Medicine
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Ohnishi Hiroshi
Laboratory Of Biosignal Sciences Institute For Molecular And Cellular Regulation Gunma University
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Murata Yoji
Laboratory Of Biosignal Sciences Institute For Molecular And Cellular Regulation Gunma University
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Nojima Yoshihisa
Department Of Medicine And Clinical Science Graduate School Of Medicine
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Okamoto Koichi
Department Of Neurology Gunma University Graduate School Of Medicine
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Kaneko Yoriaki
Department Of Medicine And Clinical Science Gunma University Graduate School Of Medicine
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Saito Yasuyuki
Department Of Medicine And Clinical Science Gunma University Graduate School Of Medicine
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Kaneko Yuka
Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University
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Tomizawa Takeshi
Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine
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Okajo Jun
Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine
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Okuzawa Chie
Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine
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Okazawa Hideki
Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University
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Matozaki Takashi
Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University
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Okajo Jun
Department Of Medicine And Clinical Science Gunma University Graduate School Of Medicine
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Kaneko Yuka
Laboratory Of Biosignal Sciences Institute For Molecular And Cellular Regulation Gunma University:de
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Okuzawa Chie
Department Of Medicine And Clinical Science Gunma University Graduate School Of Medicine
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Okazawa Hideki
Laboratory Of Biosignal Sciences Institute For Molecular And Cellular Regulation Gunma University
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Matozaki Takashi
Laboratory Of Biosignal Sciences Institute For Molecular And Cellular Regulation Gunma University
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Tomizawa Takeshi
Department Of Medicine And Clinical Science Gunma University Graduate School Of Medicine
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