Proteomics

Dataset Information

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Time-resolved phosphoproteomic analysis of the TCR signaling pathway in primary T cells


ABSTRACT: T cell receptor (TCR) signaling is essential for the function of T cells. Here we monitor and quantify the dynamics of phosphorylation sites in primary CD4+ T cells during the first 10 minutes after antibody-based TCR stimulation. To capture the earliest molecular events induced by TCR engagement we prepared unstimulated and stimulated T cells (15, 30, 120, 300 or 600 seconds after stimulation). Cells were then lysed in urea, proteins were digested into tryptic peptides, and phosphorylated peptides were enriched using titanium (TiO2) beads. In most experiments a further enrichment step was performed using phospho-Tyrosine (pTyr) immuno-precipitation. We performed 4 independent experiments, each containing 6 time-points of stimulation. This dataset contains the raw LC-MS/MS files of the pre-enriched peptide samples (SP, 24 samples) and the matching TiO2-enriched peptides (TiO2, 24 samples), as well as the eluates from further pTyr immuno-precipitation from 3 experiments (Ptyr, replicates 1, 3, 4: 18 samples). All samples were analyzed in triplicate or quadruplicate nanoLC-MS runs.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Spleen, Primary Cell, T Cell, Lymph Node

SUBMITTER: Anne Gonzalez de Peredo  

LAB HEAD: Odile Schiltz

PROVIDER: PXD014225 | Pride | 2020-07-09

REPOSITORIES: Pride

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Publications

LymphoAtlas: a dynamic and integrated phosphoproteomic resource of TCR signaling in primary T cells reveals ITSN2 as a regulator of effector functions.

Locard-Paulet Marie M   Voisinne Guillaume G   Froment Carine C   Goncalves Menoita Marisa M   Ounoughene Youcef Y   Girard Laura L   Gregoire Claude C   Mori Daiki D   Martinez Manuel M   Luche Hervé H   Garin Jerôme J   Malissen Marie M   Burlet-Schiltz Odile O   Malissen Bernard B   Gonzalez de Peredo Anne A   Roncagalli Romain R  

Molecular systems biology 20200701 7


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 after TCR stimulation. Bioinformatic analysis of the data revealed a coherent orchestration of biological processes underlying T-cell activation. In particu  ...[more]

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