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- W2116321337 abstract "TCR ligation triggers multiple signaling cascades. Cantrell and colleagues provide an unbiased phosphoproteomics analysis of CD8+ T cells showing that phosphorylation of the histone deacetylase HDAC7 is needed to maintain the identity of cytotoxic T lymphoctyes. Here we report an unbiased analysis of the cytotoxic T lymphocyte (CTL) serine-threonine phosphoproteome by high-resolution mass spectrometry. We identified approximately 2,000 phosphorylations in CTLs, of which approximately 450 were controlled by T cell antigen receptor (TCR) signaling. A significantly overrepresented group of molecules identified included transcription activators, corepressors and chromatin regulators. A focus on chromatin regulators showed that CTLs had high expression of the histone deacetylase HDAC7 but continually phosphorylated and exported this transcriptional repressor from the nucleus. Dephosphorylation of HDAC7 resulted in its accumulation in the nucleus and suppressed expression of genes encoding key cytokines, cytokine receptors and adhesion molecules that determine CTL function. Screening of the CTL phosphoproteome has thus identified intrinsic pathways of serine-threonine phosphorylation that target chromatin regulators and determine the CTL functional program." @default.
- W2116321337 created "2016-06-24" @default.
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- W2116321337 date "2011-03-13" @default.
- W2116321337 modified "2023-10-10" @default.
- W2116321337 title "Phosphoproteomic analysis reveals an intrinsic pathway for the regulation of histone deacetylase 7 that controls the function of cytotoxic T lymphocytes" @default.
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- W2116321337 doi "https://doi.org/10.1038/ni.2008" @default.
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