Abstract
We generated a series of knockin mouse lines, in which the cytokine receptor gp130-dependent STAT3 and/or SHP2 signals were disrupted, by replacing the mouse gp130 gene with human gp130 mutant cDNAs. The SHP2 signal-deficient mice (gp130F759/F759 were born normal but displayed splenomegaly and lymphadenopathy and an enhanced acute phase reaction. In contrast, the STAT3 signal-deficient mice (gp130FXQ/FXXQ) died perinatally, like the gp130-deficient mice (gp130D/D). The gp130F759/F759 mice showed prolonged gp130-induced STAT3 activation, indicating a negative regulatory role for SHP2. Th1-type cytokine production and IgG2a and IgG2b production were increased in the gp130F759/F759 mice, while they were decreased in the gp130FXXQ/FXXQ immune system. These results indicate that the balance of positive and negative signals generated through gp130 regulates the immune responses.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acute-Phase Reaction
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Animals
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Antigens, CD / genetics
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Antigens, CD / immunology*
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Astrocytes / cytology
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Astrocytes / immunology
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B-Lymphocytes / immunology
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CD40 Antigens / immunology
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Cell Differentiation
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Cells, Cultured
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Cytokine Receptor gp130
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DNA-Binding Proteins / genetics
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DNA-Binding Proteins / immunology*
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Embryonic and Fetal Development
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Hematopoiesis / genetics
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Hemocyanins / immunology
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Humans
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Immunoglobulin G / immunology
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Interferon-gamma / biosynthesis
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Interleukin-4 / biosynthesis
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Intracellular Signaling Peptides and Proteins
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Lymphatic Diseases / immunology
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Membrane Glycoproteins / genetics
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Membrane Glycoproteins / immunology*
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Mice
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Mice, Knockout
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Mice, Transgenic
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Protein Tyrosine Phosphatase, Non-Receptor Type 11
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Protein Tyrosine Phosphatase, Non-Receptor Type 6
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Protein Tyrosine Phosphatases / genetics
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Protein Tyrosine Phosphatases / immunology*
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STAT3 Transcription Factor
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Signal Transduction / immunology*
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Splenomegaly / immunology
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Trans-Activators / genetics
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Trans-Activators / immunology*
Substances
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2,4-dinitrophenyl keyhole limpet hemocyanin
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Antigens, CD
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CD40 Antigens
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DNA-Binding Proteins
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IL6ST protein, human
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Il6st protein, mouse
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Immunoglobulin G
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Intracellular Signaling Peptides and Proteins
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Membrane Glycoproteins
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STAT3 Transcription Factor
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STAT3 protein, human
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Stat3 protein, mouse
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Trans-Activators
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Cytokine Receptor gp130
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Interleukin-4
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Interferon-gamma
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Hemocyanins
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PTPN11 protein, human
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PTPN6 protein, human
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Protein Tyrosine Phosphatase, Non-Receptor Type 11
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Protein Tyrosine Phosphatase, Non-Receptor Type 6
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Protein Tyrosine Phosphatases
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Ptpn11 protein, mouse
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Ptpn6 protein, mouse