Journal
MOLECULAR SYSTEMS BIOLOGY
Volume 16, Issue 7, Pages -Publisher
WILEY
DOI: 10.15252/msb.20209524
Keywords
dynamic biological processes; ITSN2; LymphoAtlas; phosphoproteomics; TCRsignaling network
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Funding
- CNRS, INSERM
- Agence Nationale de la Recherche
- European Research Council (ERC) [322465]
- European Union [787300]
- MSDAVENIR Fund
- Investissement d'Avenir program of the French Ministry of Research ProFI [ANR-10-INBS-08]
- PHENOMIN (French National Infrastructure for mouse Phenogenomics) [ANR10-INBS-07]
- MSDAVENIR project
- ERC INTEGRATE project
- PHENOMIN project
- European Research Council (ERC) [787300] Funding Source: European Research Council (ERC)
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T-cell receptor (TCR) ligation-mediated protein phosphorylation regulates the activation, cellular responses, and fates of T cells. Here, we used time-resolved high-resolution phosphoproteomics to identify, quantify, and characterize the phosphorylation dynamics of thousands of phosphorylation sites in primary T cells during the first 10 min afterTCRstimulation. Bioinformatic analysis of the data revealed a coherent orchestration of biological processes underlying T-cell activation. In particular, functional modules associated with cytoskeletal remodeling, transcription, translation, and metabolic processes were mobilized within seconds afterTCRengagement. Among proteins whose phosphorylation was regulated byTCRstimulation, we demonstrated, using a fast-track gene inactivation approach in primary lymphocytes, that theITSN2 adaptor protein regulated T-cell effector functions. This resource, called LymphoAtlas, represents an integrated pipeline to further decipher the organization of the signaling network encoding T-cell activation. LymphoAtlas is accessible to the community at: .
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