Signaling function of PRC2 is essential for TCR-driven T cell responses
In: The Journal of Experimental Medicine, Jg. 215 (2018-04-02), Heft 4, S. 1101-1113
serialPeriodical
Zugriff:
Differentiation and activation of T cells require the activity of numerous histone lysine methyltransferases (HMT) that control the transcriptional T cell output. One of the most potent regulators of T cell differentiation is the HMT Ezh2. Ezh2 is a key enzymatic component of polycomb repressive complex 2 (PRC2), which silences gene expression by histone H3 di/tri-methylation at lysine 27. Surprisingly, in many cell types, including T cells, Ezh2 is localized in both the nucleus and the cytosol. Here we show the presence of a nuclear-like PRC2 complex in T cell cytosol and demonstrate a role of cytosolic PRC2 in T cell antigen receptor (TCR)–mediated signaling. We show that short-term suppression of PRC2 precludes TCR-driven T cell activation in vitro. We also demonstrate that pharmacological inhibition of PRC2 in vivo greatly attenuates the severe T cell–driven autoimmunity caused by regulatory T cell depletion. Our data reveal cytoplasmic PRC2 is one of the most potent regulators of T cell activation and point toward the therapeutic potential of PRC2 inhibitors for the treatment of T cell–driven autoimmune diseases.
Titel: |
Signaling function of PRC2 is essential for TCR-driven T cell responses
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Autor/in / Beteiligte Person: | Dobenecker, Marc-Werner ; Park, Joon Seok ; Marcello, Jonas ; McCabe, Michael T. ; Gregory, Richard ; Knight, Steven D. ; Rioja, Inmaculada ; Bassil, Anna K. ; Prinjha, Rabinder K. ; Tarakhovsky, Alexander |
Zeitschrift: | The Journal of Experimental Medicine, Jg. 215 (2018-04-02), Heft 4, S. 1101-1113 |
Veröffentlichung: | 2018 |
Medientyp: | serialPeriodical |
ISSN: | 0022-1007 (print) ; 1540-9538 (print) |
DOI: | 10.1084/jem.20170084 |
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