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Hasham MG, Baxan N, Stuckey DJ, Branca J, Perkins B, Dent O, Duffy T, Hameed TS, Stella SE, Bellahcene M, Schneider MD, Harding SE, Rosenthal N, Sattler S. Systemic autoimmunity induced by the TLR7/8 agonist Resiquimod causes myocarditis and dilated cardiomyopathy in a new mouse model of autoimmune heart disease. Dis Model Mech 2017; 10:259-270. [PMID: 28250051 PMCID: PMC5374321 DOI: 10.1242/dmm.027409] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 01/18/2017] [Indexed: 12/21/2022] Open
Abstract
Systemic autoimmune diseases such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) show significant heart involvement and cardiovascular morbidity, which can be due to systemically increased levels of inflammation or direct autoreactivity targeting cardiac tissue. Despite high clinical relevance, cardiac damage secondary to systemic autoimmunity lacks inducible rodent models. Here, we characterise immune-mediated cardiac tissue damage in a new model of SLE induced by topical application of the Toll-like receptor 7/8 (TLR7/8) agonist Resiquimod. We observe a cardiac phenotype reminiscent of autoimmune-mediated dilated cardiomyopathy, and identify auto-antibodies as major contributors to cardiac tissue damage. Resiquimod-induced heart disease is a highly relevant mouse model for mechanistic and therapeutic studies aiming to protect the heart during autoimmunity. Summary: A novel mouse model of autoimmune-mediated heart damage to study the underlying mechanisms and test therapeutic options for systemic autoimmunity.
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Affiliation(s)
- Muneer G Hasham
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA
| | - Nicoleta Baxan
- Biological Imaging Centre, Department of Medicine, Imperial College London, London W12 0NN, UK
| | - Daniel J Stuckey
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London WC1E 6DD, UK
| | - Jane Branca
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA
| | - Bryant Perkins
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA
| | - Oliver Dent
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Ted Duffy
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA
| | - Tolani S Hameed
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Sarah E Stella
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Mohammed Bellahcene
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Michael D Schneider
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Sian E Harding
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Nadia Rosenthal
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA.,National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
| | - Susanne Sattler
- National Heart and Lung Institute, Imperial College London, London W12 0NN, UK
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