Open Access Green: Postprint online verfügbar 04/2023 möglich sobald bei der ZB eingereicht worden ist.
The function of Wtap in N6-adenosine methylation of mRNAs controls T cell receptor signaling and survival of T cells.
Nat. Immunol. 23, 1208-1221 (2022)
T cell antigen-receptor (TCR) signaling controls the development, activation and survival of T cells by involving several layers and numerous mechanisms of gene regulation. N6-methyladenosine (m6A) is the most prevalent messenger RNA modification affecting splicing, translation and stability of transcripts. In the present study, we describe the Wtap protein as essential for m6A methyltransferase complex function and reveal its crucial role in TCR signaling in mouse T cells. Wtap and m6A methyltransferase functions were required for the differentiation of thymocytes, control of activation-induced death of peripheral T cells and prevention of colitis by enabling gut RORγt+ regulatory T cell function. Transcriptome and epitranscriptomic analyses reveal that m6A modification destabilizes Orai1 and Ripk1 mRNAs. Lack of post-transcriptional repression of the encoded proteins correlated with increased store-operated calcium entry activity and diminished survival of T cells with conditional genetic inactivation of Wtap. These findings uncover how m6A modification impacts on TCR signal transduction and determines activation and survival of T cells.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 1529-2908
Zeitschrift Nature Immunology
Quellenangaben Band: 23, Heft: 8, Seiten: 1208-1221
Verlag Nature Publishing Group
Begutachtungsstatus Peer reviewed
Förderungen Deutsche Forschungsgemeinschaft