A Comprehensive Tyrosine Phosphoproteomic Analysis Reveals Novel Components of the Platelet CLEC-2 Signaling Cascade

Autor: Lidia Hermida-Nogueira, Irene Izquierdo, Serena Lacerenza, Roberto Pinto-Llorente, Vivian de los Ríos, Luis A. Morán, Ángel García, María Isabel Loza, Johannes A. Eble, Joaquín Abián, Vanessa Casas, María N. Barrachina, J I Casal, Eduardo Domínguez, Montserrat Carrascal
Přispěvatelé: Universidade de Santiago de Compostela. Centro de Investigación en Medicina Molecular e Enfermidades Crónicas, Universidade de Santiago de Compostela. Departamento de Farmacoloxía, Farmacia e Tecnoloxía Farmacéutica, Ministerio de Economía y Competitividad (España), Xunta de Galicia, European Commission, Barrachina, Maria N. [0000-0002-1701-6899], Hermida-Nogueira, Lidia [0000-0001-7858-6046], Casas, Vanessa [0000-0001-7438-0323], Eble, Johannes A. [0000-0001-9156-2137], de los Ríos, Vivian [0000-0001-5582-6879], Domínguez, Eduardo [0000-0003-3359-5867], Loza, María Isabel [0000-0003-4730-0863], Casal, J. Ignacio [0000-0003-1085-2840], Carrascal, Montserrat [0000-0002-0205-2176], Barrachina, Maria N., Hermida-Nogueira, Lidia, Casas, Vanessa, Eble, Johannes A., de los Ríos, Vivian, Domínguez, Eduardo, Loza, María Isabel, Casal, J. Ignacio, Carrascal, Montserrat
Rok vydání: 2020
Předmět:
Zdroj: Thrombosis and Haemostasis
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname
Digital.CSIC. Repositorio Institucional del CSIC
ISSN: 2567-689X
0340-6245
DOI: 10.1055/s-0039-3400295
Popis: 15 p.-7 fig.-2 tab.
C-type lectin-like receptor 2 (CLEC-2) plays a crucial role in different platelet-related physiological and pathological processes. It signals through a tyrosine kinase-mediated pathway that is highly dependent on the positive feedback exerted by the platelet-derived secondary mediators, adenosine diphosphate (ADP) and thromboxane A2 (TXA2). Here, we aimed to analyze the tyrosine phosphoproteome of platelets activated with the CLEC-2 agonist rhodocytin to identify relevant phosphorylated tyrosine residues (p-Tyr) and proteins involved in platelet activation downstream of this receptor. We identified 363 differentially p-Tyr residues, corresponding to the majority of proteins previously known to participate in CLEC-2 signaling and also novel ones, including adaptors (e.g., DAPP1, Dok1/3, CASS4, Nck1/2), kinases/phosphatases (e.g., FAK1, FES, FGR, JAK2, SHIP2), and membrane proteins (e.g., G6F, JAM-A, PECAM-1, TLT-1). To elucidate the contribution of ADP and TXA2 at different points of the CLEC-2 signaling cascade, we evaluated p-Tyr levels of residues identified in the analysis and known to be essential for the catalytic activity of kinases Syk(p-Tyr525+526) and Src(p-Tyr419), and for PLCγ2 activity (p-Tyr759). We demonstrated that Syk phosphorylation at Tyr525+526 also happens in the presence of ADP and TXA2 inhibitors, which is not the case for Src-pTyr419 and PLCγ2-pTyr759. Kinetics studies for the three phosphoproteins show some differences in the phosphorylation profile. Ca2+ mobilization assays confirmed the relevance of ADP and TXA2 for full CLEC-2-mediated platelet activation. The present study provides significant insights into the intracellular events that take place following CLEC-2 activation in platelets, contributing to elucidate in detail the CLEC-2 signalosome.
This study was supported by the Spanish Ministryof Economy and Competitiveness (MINECO) [grant No. SAF2016-79662-R], co-funded by the European Regional Develop-ment Fund (ERDF); and the Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia [ED431C2018/21; predoctoral grant Plan I2C 2014; and CentroSingular de investigación de Galicia accreditation 2016-2019, ED431G/05], co-funded by the European Regional Development Fund (ERDF). The study also received funding from the European Union’s Horizon 2020 research andinnovation programme under the Marie Skłodowska-Curiegrant agreement No 766118. J.A.E. is supported by DeutscheForschungsgemeinschaft [DFG grant: EB177/13-1]
Databáze: OpenAIRE