Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury
The role of C5a receptors (C5aR1 and C5L2) in renal ischemia-reperfusion injury (IRI) is uncertain. We generated an in vitro model of hypoxia/reoxygenation with human proximal tubule epithelial cells to mimic some IRI events. C5aR1, membrane attack complex (MAC) and factor H (FH) deposits were evalu...
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doaj-4d955df9d61f48069b62b1527130a9bb2021-03-03T00:00:11ZengMDPI AGJournal of Clinical Medicine2077-03832021-03-011097497410.3390/jcm10050974Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion InjuryCarlos Arias-Cabrales0Eva Rodriguez-Garcia1Javier Gimeno2David Benito3María José Pérez-Sáez4Dolores Redondo-Pachón5Anna Buxeda6Carla Burballa7Marta Crespo8Marta Riera9Julio Pascual10Department of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainDepartment of Pathology, Parc de Salut Mar, 08003 Barcelona, SpainKidney Research Group, Hospital del Mar Medical Research Institute, IMIM, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainKidney Research Group, Hospital del Mar Medical Research Institute, IMIM, 08003 Barcelona, SpainDepartment of Nephrology, Parc de Salut Mar, 08003 Barcelona, SpainThe role of C5a receptors (C5aR1 and C5L2) in renal ischemia-reperfusion injury (IRI) is uncertain. We generated an in vitro model of hypoxia/reoxygenation with human proximal tubule epithelial cells to mimic some IRI events. C5aR1, membrane attack complex (MAC) and factor H (FH) deposits were evaluated with immunofluorescence. Quantitative polymerase chain reaction evaluated the expression of <i>C5aR1</i>, <i>C5L2</i> genes as well as genes related to tubular injury, inflammation, and profibrotic pathways. Additionally, C5aR1 and C5L2 deposits were evaluated in kidney graft biopsies (KB) from transplant patients with delayed graft function (DGF, <i>n</i> = 12) and compared with a control group (<i>n</i> = 8). We observed higher immunofluorescence expression of C5aR1, MAC and FH as higher expression of genes related to tubular injury, inflammatory and profibrotic pathways and of <i>C5aR1</i> in the hypoxic cells; whereas, <i>C5L2</i> gene expression was unaffected by the hypoxic stimulus. Regarding KB, C5aR1 was detected in the apical and basal membrane of tubular epithelial cells, whereas C5L2 deposits were observed in endothelial cells of peritubular capillaries (PTC). DGF-KB showed more frequently diffuse C5aR1 staining and C5L2 compared to controls. In conclusion, C5aR1 expression is increased by hypoxia and IRI, both in vitro and in human biopsies with an acute injury. C5L2 expression in PTC could be related to endothelial cell damage during IRI.https://www.mdpi.com/2077-0383/10/5/974kidney transplantischemia-reperfusion injurydelayed graft functioncomplement systemC5a receptors |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Carlos Arias-Cabrales Eva Rodriguez-Garcia Javier Gimeno David Benito María José Pérez-Sáez Dolores Redondo-Pachón Anna Buxeda Carla Burballa Marta Crespo Marta Riera Julio Pascual |
spellingShingle |
Carlos Arias-Cabrales Eva Rodriguez-Garcia Javier Gimeno David Benito María José Pérez-Sáez Dolores Redondo-Pachón Anna Buxeda Carla Burballa Marta Crespo Marta Riera Julio Pascual Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury Journal of Clinical Medicine kidney transplant ischemia-reperfusion injury delayed graft function complement system C5a receptors |
author_facet |
Carlos Arias-Cabrales Eva Rodriguez-Garcia Javier Gimeno David Benito María José Pérez-Sáez Dolores Redondo-Pachón Anna Buxeda Carla Burballa Marta Crespo Marta Riera Julio Pascual |
author_sort |
Carlos Arias-Cabrales |
title |
Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury |
title_short |
Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury |
title_full |
Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury |
title_fullStr |
Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury |
title_full_unstemmed |
Role of C5aR1 and C5L2 Receptors in Ischemia-Reperfusion Injury |
title_sort |
role of c5ar1 and c5l2 receptors in ischemia-reperfusion injury |
publisher |
MDPI AG |
series |
Journal of Clinical Medicine |
issn |
2077-0383 |
publishDate |
2021-03-01 |
description |
The role of C5a receptors (C5aR1 and C5L2) in renal ischemia-reperfusion injury (IRI) is uncertain. We generated an in vitro model of hypoxia/reoxygenation with human proximal tubule epithelial cells to mimic some IRI events. C5aR1, membrane attack complex (MAC) and factor H (FH) deposits were evaluated with immunofluorescence. Quantitative polymerase chain reaction evaluated the expression of <i>C5aR1</i>, <i>C5L2</i> genes as well as genes related to tubular injury, inflammation, and profibrotic pathways. Additionally, C5aR1 and C5L2 deposits were evaluated in kidney graft biopsies (KB) from transplant patients with delayed graft function (DGF, <i>n</i> = 12) and compared with a control group (<i>n</i> = 8). We observed higher immunofluorescence expression of C5aR1, MAC and FH as higher expression of genes related to tubular injury, inflammatory and profibrotic pathways and of <i>C5aR1</i> in the hypoxic cells; whereas, <i>C5L2</i> gene expression was unaffected by the hypoxic stimulus. Regarding KB, C5aR1 was detected in the apical and basal membrane of tubular epithelial cells, whereas C5L2 deposits were observed in endothelial cells of peritubular capillaries (PTC). DGF-KB showed more frequently diffuse C5aR1 staining and C5L2 compared to controls. In conclusion, C5aR1 expression is increased by hypoxia and IRI, both in vitro and in human biopsies with an acute injury. C5L2 expression in PTC could be related to endothelial cell damage during IRI. |
topic |
kidney transplant ischemia-reperfusion injury delayed graft function complement system C5a receptors |
url |
https://www.mdpi.com/2077-0383/10/5/974 |
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