1. Ischaemia alters the effects of cardiomyocyte-derived extracellular vesicles on macrophage activation
- Author
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Mónica Zuzarte, Henrique Girão, Ana Silva, Paulo Pereira, Tania Martins-Marques, Pieter Vader, Katia Jesus, Maria Teresa Cruz, Teresa Ribeiro-Rodrigues, Lino Gonçalves, Joost Petrus Gerardus Sluijter, Liliana Reis, Rafael A. Paiva, Maria Joana Ferreira da Silva, Centro de Estudos de Doenças Crónicas (CEDOC), and NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM)
- Subjects
0301 basic medicine ,Male ,Interleukin-1beta ,Myocardial Infarction ,Nitric Oxide Synthase Type II ,cardiomyocytes ,p38 Mitogen-Activated Protein Kinases ,0302 clinical medicine ,Ischemia ,Myocytes, Cardiac ,Myocardial infarction ,Non-U.S. Gov't ,biology ,Chemistry ,Research Support, Non-U.S. Gov't ,Middle Aged ,3. Good health ,Cell biology ,Interleukin-10 ,macrophages ,Crosstalk (biology) ,030220 oncology & carcinogenesis ,intercellular communication ,Molecular Medicine ,Tumor necrosis factor alpha ,Original Article ,Female ,extracellular vesicles ,Intracellular ,acute myocardial infarction ,Research Support ,Cell Line ,03 medical and health sciences ,SDG 3 - Good Health and Well-being ,medicine ,Journal Article ,Animals ,Humans ,Aged ,Inflammation ,Interleukin-6 ,Tumor Necrosis Factor-alpha ,Original Articles ,Cell Biology ,Macrophage Activation ,medicine.disease ,Molecular medicine ,Rats ,Fibronectin ,030104 developmental biology ,biology.protein ,Homeostasis - Abstract
We thank Dr Nuno Alves (Cardiology Department, CHUC‐HG) who performed the collection of human blood samples and Doctor Francisco Caramelo (iCBR/FMUC) for helping with the statistical analysis. This work was supported by the European Regional Development Fund (ERDF) through the Operational Program for Competitiveness Factors (COMPETE) [under the projects PAC “NETDIAMOND” POCI‐01‐0145‐FEDER‐016385; HealthyAging2020 CENTRO‐01‐0145‐ FEDER‐000012‐N2323; POCI‐01‐0145‐FEDER‐007440, CENTRO‐01‐ 0145‐FEDER‐032179, CENTRO‐01‐0145‐FEDER‐032414 and FCT‐ UID/NEU/04539/2013 to CNC.IBILI]. TMM was supported by PD/ BD/106043/2015 and TRR by PD/BD/52294/2013 from Fundação para a Ciência e a Tecnologia (FCT). JS was supported by Horizon2020 ERC‐2016‐COG EVICARE (725229). Myocardial ischaemia is associated with an exacerbated inflammatory response, as well as with a deregulation of intercellular communication systems. Macrophages have been implicated in the maintenance of heart homeostasis and in the progression and resolution of the ischaemic injury. Nevertheless, the mechanisms underlying the crosstalk between cardiomyocytes and macrophages remain largely underexplored. Extracellular vesicles (EVs) have emerged as key players of cell-cell communication in cardiac health and disease. Hence, the main objective of this study was to characterize the impact of cardiomyocyte-derived EVs upon macrophage activation. Results obtained demonstrate that EVs released by H9c2 cells induced a pro-inflammatory profile in macrophages, via p38MAPK activation and increased expression of iNOS, IL-1β and IL-6, being these effects less pronounced with ischaemic EVs. EVs derived from neonatal cardiomyocytes, maintained either in control or ischaemia, induced a similar pattern of p38MAPK activation, expression of iNOS, IL-1β, IL-6, IL-10 and TNFα. Importantly, adhesion of macrophages to fibronectin was enhanced by EVs released by cardiomyocytes under ischaemia, whereas phagocytic capacity and adhesion to cardiomyocytes were higher in macrophages incubated with control EVs. Additionally, serum-circulating EVs isolated from human controls or acute myocardial infarction patients induce macrophage activation. According to our model, in basal conditions, cardiomyocyte-derived EVs maintain a macrophage profile that ensure heart homeostasis, whereas during ischaemia, this crosstalk is affected, likely impacting healing and post-infarction remodelling. publishersversion published
- Published
- 2018