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Lu RXZ, Rafatian N, Zhao Y, Wagner KT, Beroncal EL, Li B, Lee C, Chen J, Churcher E, Vosoughi D, Liu C, Wang Y, Baker A, Trahtemberg U, Li B, Pierro A, Andreazza AC, dos Santos CC, Radisic M. Cardiac tissue model of immune-induced dysfunction reveals the role of free mitochondrial DNA and the therapeutic effects of exosomes. Sci Adv 2024; 10:eadk0164. [PMID: 38536913 PMCID: PMC10971762 DOI: 10.1126/sciadv.adk0164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 02/22/2024] [Indexed: 04/04/2024]
Abstract
Despite tremendous progress in the development of mature heart-on-a-chip models, human cell-based models of myocardial inflammation are lacking. Here, we bioengineered a vascularized heart-on-a-chip with circulating immune cells to model severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-induced acute myocarditis. We observed hallmarks of coronavirus disease (COVID-19)-induced myocardial inflammation, as the presence of immune cells augmented the secretion of proinflammatory cytokines, triggered progressive impairment of contractile function, and altered intracellular calcium transients. An elevation of circulating cell-free mitochondrial DNA (ccf-mtDNA) was measured first in the heart-on-a-chip and then validated in COVID-19 patients with low left ventricular ejection fraction, demonstrating that mitochondrial damage is an important pathophysiological hallmark of inflammation-induced cardiac dysfunction. Leveraging this platform in the context of SARS-CoV-2-induced myocardial inflammation, we established that administration of endothelial cell-derived exosomes effectively rescued the contractile deficit, normalized calcium handling, elevated the contraction force, and reduced the ccf-mtDNA and cytokine release via Toll-like receptor-nuclear factor κB signaling axis.
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Affiliation(s)
- Rick Xing Ze Lu
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Mitochondrial Innovation Initiative, MITO2i, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Naimeh Rafatian
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Yimu Zhao
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada
| | - Karl T. Wagner
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Erika L. Beroncal
- Mitochondrial Innovation Initiative, MITO2i, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Bo Li
- Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - Carol Lee
- Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - Jingan Chen
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Eryn Churcher
- Interdepartmental Division of Critical Care, Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Daniel Vosoughi
- Latner Thoracic Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chuan Liu
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Ying Wang
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada
| | - Andrew Baker
- Interdepartmental Division of Critical Care, Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Uriel Trahtemberg
- Interdepartmental Division of Critical Care, Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
- Galilee Medical Center, Nahariya, Israel
| | - Bowen Li
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - Agostino Pierro
- Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
- Department of Surgery, University of Toronto, Toronto, ON M5T 1P5, Canada
| | - Ana C. Andreazza
- Mitochondrial Innovation Initiative, MITO2i, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Claudia C. dos Santos
- Interdepartmental Division of Critical Care, Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Milica Radisic
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Mitochondrial Innovation Initiative, MITO2i, University of Toronto, Toronto, ON M5S 1A8, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3D5, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON, M5S 3E1
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