Journal Article

Identification of immune-related proteins of Dreissena polymorpha hemocytes and plasma involved in host-microbe interactions by differential proteomics

Geffard, Alain, Almunia, Christine, Palos-Ladeiro, Mélissa, ANR-15-CE34-0005,MOBIDIC,Les MOllusques BIvalves comme inDICateurs de la contamination des masses d'eau par les protozoaires parasites., Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO) ; Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH) ; Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet ; Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Armengaud, J, Laboratoire Innovations technologiques pour la Détection et le Diagnostic (LI2D) ; Service de Pharmacologie et Immunoanalyse (SPI) ; Médicaments et Technologies pour la Santé (MTS) ; Université Paris-Saclay-Institut des Sciences du Vivant Frédéric JOLIOT (JOLIOT) ; Commissariat à l'énergie atomique et aux

2020

Overview

Biological responses of zebra mussel Dreissena polymorpha are investigated to assess the impact of contaminants on aquatic organisms and ecosystems. In addition to concentrate chemical contaminants in their tissues, zebra mussels accumulate several microorganisms such as viruses, protozoa and bacteria. In order to understand the molecular mechanisms involved in the defence against microorganisms this study aims at identifying immune proteins from D. polymorpha hemolymph involved in defence against protozoa and viruses. For this purpose, hemolymph were exposed ex vivo to Cryptosporidium parvum and RNA poly I:C. Differential proteomics on both hemocytes and plasma revealed immune proteins modulated under exposures. Different patterns of response were observed after C. parvum and RNA poly I:C exposures. The number of modulated proteins per hemolymphatic compartments suggest that C. parvum is managed in cells while RNA poly I:C is managed in plasma after 4 h exposure. BLAST annotation and GO terms enrichment analysis revealed further characteristics of immune mechanisms. Results showed that many proteins involved in the recognition and destruction of microorganisms were modulated in both exposure conditions, while proteins related to phagocytosis and apoptosis were exclusively modulated by C. parvum. This differential proteomic analysis highlights in zebra mussels modulated proteins involved in the response to microorganisms, which reflect a broad range of immune mechanisms such as recognition, internalization and destruction of microorganisms. This study paves the way for the identification of new markers of immune processes that can be used to assess the impact of both chemical and biological contaminations on the health status of aquatic organisms.

• Publisher: Nature Publishing Group,HAL CCSD,Nature Publishing Group UK
• Subject: 631/250/2499 / 631/250/262 / 631/337/475 / Animals / Apoptosis / Apoptosis - immunology / Aquatic ecosystems / Aquatic organisms / Chemical contaminants / Chemical pollution / Chemical Sciences / Contaminants / Cryptosporidium / Cryptosporidium parvum - immunology / Dreissena - immunology / Dreissena - parasitology / Dreissena - virology / Dreissena polymorpha / Environmental Sciences / Hemocytes / Hemocytes - immunology / Hemocytes - metabolism / Hemolymph / Hemolymph - cytology / Hemolymph - immunology / Hemolymph - metabolism / Host Microbial Interactions - immunology / Humanities and Social Sciences / Immunity, Innate / Internalization / Microorganisms / Molecular modelling / Mollusks / multidisciplinary / Phagocytosis / Phagocytosis - immunology / Poly I-C - immunology / Polyinosinic:polycytidylic acid / Proteins / Proteomics / Protozoa / Ribonucleic acid / RNA / Science / Science (multidisciplinary)
• ISBN: 0005599495000