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Título: | Immune-responsive gene 1 (IRG1) and dimethyl itaconate are involved in the mussel immune response |
Autor: | Sendra, Marta CSIC ORCID CVN ; Saco, Amaro CSIC ORCID; Rey-Campos, Magalí CSIC ORCID; Novoa, Beatriz CSIC ORCID; Figueras Huerta, Antonio CSIC ORCID | Palabras clave: | irg1 Itaconate Antibacterial Mussel Immune system |
Fecha de publicación: | 2020 | Editor: | Elsevier | Citación: | Fish and Shellfish Immunology 106: 645-655 (2020) | Resumen: | Immune-responsive gene 1 (irg1) is a gene that is well-conserved among different taxa and is highly expressed in the mussel Mytilus galloprovincialis at the constitutive level. The expression of this gene increases after a bacterial infection, primarily in haemocytes. irg1 catalyses the production of itaconic acid from cis-aconitic acid in the Krebs cycle. Recently, itaconate has been revealed as an immune metabolite involved in macrophage polarization. In this work, we studied the effects of exogenous dimethyl itaconate (DI) on mussels in vitro and in vivo at relevant previously described endogenous concentrations and in mussels infected with Vibrio splendidus. DI did not have adverse effects on the haemocytes viability, apoptotic cells, proliferation and phagocytic activity; however, haemocyte size, velocity and accumulated distance were decreased. The antibacterial activity of DI in vitro and in vivo was observed with high concentrations of DI, that is, 30 and 50 mM, respectively. Furthermore, DI inhibited total ROS, increased mitochondrial ROS and modulated antioxidant genes, such as SOD and CAT, related to Nrf2 activation. In this research, we have demonstrated some important pathways in haemocytes in which itaconate can be involved after its production in a bacterial infection | Descripción: | 11 pages, 8 figures | Versión del editor: | https://doi.org/10.1016/j.fsi.2020.07.034 | URI: | http://hdl.handle.net/10261/227446 | DOI: | 10.1016/j.fsi.2020.07.034 | ISSN: | 1050-4648 |
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