Cdc42 couples T cell receptor endocytosis to GRAF1-mediated tubular invaginations of the plasma membrane

This Dataset contains primary data used for the publication "Cdc42 couples T cell receptor endocytosis to GRAF1-mediated tubular invaginations of the plasma membrane" published online on 04. November 2019<br> doi:10.3390/cells8111388 <strong>Abstract:</strong> T cell activation is immediately followed by internalization of the T cell receptor (TCR).<br> TCR endocytosis is required for T cell activation, but the mechanisms supporting removal of TCR<br> from the cell surface remain incompletely understood. Here we report that TCR endocytosis is<br> linked to the clathrin-independent carrier (CLIC) and GPI-enriched endocytic compartments<br> (GEEC) endocytic pathway. We show that unlike the canonical clathrin cargo transferrin or the<br> adaptor protein Lat, internalized TCR accumulates in tubules shaped by the small GTPase Cdc42<br> and the Bin/amphiphysin/Rvs (BAR) domain containing protein GRAF1 in T cells. Preventing<br> GRAF1-positive tubules to mature into endocytic vesicles by expressing a constitutively active<br> Cdc42 impairs the endocytosis of TCR, while having no consequence on the uptake of transferrin.<br> Together, our data reveal a link between TCR internalization and the CLIC/GEEC endocytic route<br> supported by Cdc42 and GRAF1. Data are organised in compressed (.zip) folders entitled as the corresponding Figures in the publication. Programs we recommend to view the files are:<br> .fcs files: FlowJo software v10 (Tree Star, Ashland, OR, USA)<br> .lif files: LAS X v3 (Leica Microsystems, Wetzlar, Germany)<br> .pzfx files: Prism v7 software (GraphPad, San Diego, CA, USA) In case this Dataset is updated, new version will be available with doi:10.5281/zenodo.3545842