dc.contributor.author | Herranz, Gonzalo | |
dc.contributor.author | Aguilera, Pablo | |
dc.contributor.author | Dávila, Sergio | |
dc.contributor.author | Sánchez, Alicia | |
dc.contributor.author | Stancu, Bianca | |
dc.contributor.author | Gómez, Jesús | |
dc.contributor.author | Fernández-Moreno, David | |
dc.contributor.author | Martín, Raúl de | |
dc.contributor.author | Quintanilla, Mario | |
dc.contributor.author | Fernández, Teresa | |
dc.contributor.author | Rodríguez-Silvestre, Pablo | |
dc.contributor.author | Márquez-Exposito, Laura | |
dc.contributor.author | Bello-Gamboa, Ana | |
dc.contributor.author | Fraile-Ramos, Alberto | |
dc.contributor.author | Calvo López, Víctor | |
dc.contributor.author | Izquierdo, Manuel | |
dc.contributor.other | UAM. Departamento de Bioquímica | es_ES |
dc.date.accessioned | 2020-04-15T13:23:07Z | |
dc.date.available | 2020-04-15T13:23:07Z | |
dc.date.issued | 2019-04-26 | |
dc.identifier.citation | Front. Immunol. 10 (2019): 851 | en_US |
dc.identifier.issn | 1664-3224 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10486/690759 | |
dc.description.abstract | Multivesicular bodies (MVB) are endocytic compartments that enclose
intraluminal vesicles (ILVs) formed by inward budding from the limiting membrane
of endosomes. In T lymphocytes, ILVs are secreted as Fas ligand-bearing, pro-apoptotic
exosomes following T cell receptor (TCR)-induced fusion of MVB with the plasma
membrane at the immune synapse (IS). In this study we show that protein kinase C δ
(PKC δ ), a novel PKC isotype activated by diacylglycerol (DAG), regulates TCR-controlled
MVB polarization toward the IS and exosome secretion. Concomitantly, we demonstrate
that PKC δ -interfered T lymphocytes are defective in activation-induced cell death.
Using a DAG sensor based on the C1 DAG-binding domain of PKC δ and a GFP-PKC δ
chimera, we reveal that T lymphocyte activation enhances DAG levels at the MVB
endomembranes which mediates the association of PKC δ to MVB. Spatiotemporal
reorganization of F-actin at the IS is inhibited in PKC δ -interfered T lymphocytes.
Therefore, we propose PKC δ as a DAG effector that regulates the actin reorganization
necessary for MVB traffic and exosome secretion. | en_US |
dc.description.sponsorship | This work was supported by grants from the Spanish Ministerio
de Economía y Competitividad (MINECO), Plan Nacional de
Investigación Científica (SAF2016-77561-R to MI, which was in
part granted with FEDER-EC- funding). This work was partially
supported by grant BFU2012-35067 to AF-R | en_US |
dc.format.extent | 19 págs. | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Frontiers Media | es_ES |
dc.relation.ispartof | Frontiers in Immunology | en_US |
dc.rights | Copyright © 2019 Herranz, Aguilera, Dávila, Sánchez, Stancu, Gómez, Fernández- Moreno, de Martín, Quintanilla, Fernández, Rodríguez-Silvestre, Márquez- Expósito, Bello-Gamboa, Fraile-Ramos, Calvo and Izquierdo | es_ES |
dc.subject.other | T lymphocytes | en_US |
dc.subject.other | immune synapse | en_US |
dc.subject.other | protein kinase C δ | en_US |
dc.subject.other | multivesicular bodies | en_US |
dc.subject.other | exosomes | en_US |
dc.subject.other | cytotoxic activity | en_US |
dc.subject.other | cell death | en_US |
dc.title | Protein kinase C δ regulates the depletion of actin at the immunological synapse required for polarized exosome secretion by T cells | en_US |
dc.type | article | en_US |
dc.subject.eciencia | Medicina | es_ES |
dc.relation.publisherversion | https://doi.org/10.3389/fimmu.2019.00851 | es_ES |
dc.identifier.doi | 10.3389/fimmu.2019.00851 | es_ES |
dc.identifier.publicationfirstpage | 851-1 | es_ES |
dc.identifier.publicationlastpage | 851-19 | es_ES |
dc.identifier.publicationvolume | 10 | es_ES |
dc.relation.projectID | Gobierno de España. SAF2016-77561-R | es_ES |
dc.relation.projectID | Gobierno de España. BFU2012-35067 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | en |
dc.rights.cc | Reconocimiento | es_ES |
dc.rights.accessRights | openAccess | es_ES |
dc.authorUAM | Calvo López, Víctor (259611) | |
dc.facultadUAM | Facultad de Medicina | |