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Schnitter F, Stangl F, Noeske E, Bille M, Stadtmüller A, Vogt N, Sicklinger F, Leuschner F, Frey A, Schreiber L, Frantz S, Beyersdorf N, Ramos G, Gladow N, Hofmann U. Characterizing the immune response to myocardial infarction in pigs. Basic Res Cardiol 2024; 119:453-479. [PMID: 38491291 PMCID: PMC11143055 DOI: 10.1007/s00395-024-01036-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 03/18/2024]
Abstract
Though myocardial infarction (MI) in pigs is a well-established translational large animal model, it has not yet been widely used for immunotherapy studies, and a comprehensive description of the immune response to MI in this species is lacking. We induced MI in Landrace pigs by balloon occlusion of the left anterior descending artery over 90 min. Within 14 days, the necrotic myocardium was progressively replaced by scar tissue with involvement of myofibroblasts. We characterized the immune response in the heart ex vivo by (immuno)histology, flow cytometry, and RNA sequencing of myocardial tissue on days 3, 7, and 14 after MI. Besides a clear predominance of myeloid cells among heart-infiltrating leukocytes, we detected activated T cells and an increasing proportion of CD4+ Foxp3+ regulatory T cells (Treg), especially in the infarct core-findings that closely mirror what has been observed in mice and humans after MI. Transcriptome data indicated inflammatory activity that was persistent but markedly changing in character over time and linked to extracellular matrix biology. Analysis of lymphocytes in heart-draining lymph nodes revealed significantly higher proliferation rates of T helper cell subsets, including Treg on day 7 after MI, compared to sham controls. Elevated frequencies of myeloid progenitors in the spleen suggest that it might be a site of emergency myelopoiesis after MI in pigs, as previously shown in mice. We thus provide a first description of the immune response to MI in pigs, and our results can aid future research using the species for preclinical immunotherapy studies.
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Affiliation(s)
- Florian Schnitter
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany.
| | - Franziska Stangl
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Elisabeth Noeske
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Maya Bille
- Comprehensive Heart Failure Center, Department of Cardiovascular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Anja Stadtmüller
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Niklas Vogt
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Florian Sicklinger
- Department of Internal Medicine III, University Hospital Heidelberg, Heidelberg, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany
| | - Florian Leuschner
- Department of Internal Medicine III, University Hospital Heidelberg, Heidelberg, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany
| | - Anna Frey
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Laura Schreiber
- Comprehensive Heart Failure Center, Department of Cardiovascular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Stefan Frantz
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Niklas Beyersdorf
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Gustavo Ramos
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Nadine Gladow
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Ulrich Hofmann
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
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Yang Z, Li C, Wang Y, Dong W, Yang M, Jin J. A single-chain antibody construct with specificity of a natural IgM antibody reduces hepatic ischemia reperfusion injury in mice. J Cell Mol Med 2024; 28:e18291. [PMID: 38597412 PMCID: PMC11005456 DOI: 10.1111/jcmm.18291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/18/2024] [Accepted: 03/25/2024] [Indexed: 04/11/2024] Open
Abstract
Natural immunoglobulin M (IgM) antibodies have been shown to recognize post-ischemic neoepitopes following reperfusion of tissues and to activate complement. Specifically, IgM antibodies and complement have been shown to drive hepatic ischemia reperfusion injury (IRI). Herein, we investigate the therapeutic effect of C2 scFv (single-chain antibody construct with specificity of a natural IgM antibody) on hepatic IRI in C57BL/6 mice. Compared with PBS-treated mice, C2 scFv-treated mice displayed almost no necrotic areas, significant reduction in serum ALT, AST and LDH levels, and significantly reduced in the number of TUNEL positive cells. Moreover, C2 scFv-treated mice exhibited a notable reduction in inflammatory cells after hepatic IRI than PBS-treated mice. The serum IL-6, IL-1β, TNF-α and MPC-1 levels were also severely suppressed by C2 scFv. Interestingly, C2 scFv reconstituted hepatic inflammation and IRI in Rag1-/- mice. We found that C2 scFv promoted hepatic cell death and increased inflammatory cytokines and infiltration of inflammatory cells after hepatic IRI in Rag1-/- mice. In addition, IgM and complement 3d (C3d) were deposited in WT mice and in Rag1-/- mice reconstituted with C2 scFv, indicating that C2 scFv can affect IgM binding and complement activation and reconstitute hepatic IRI. C3d expression was significantly lower in C57BL/6 mice treated with C2 scFv compared to PBS, indicating that excessive exogenous C2 scFv inhibited complement activation. These data suggest that C2 scFv alleviates hepatic IRI by blocking complement activation, and treatment with C2 scFv may be a promising therapy for hepatic IRI.
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Affiliation(s)
- Zhi Yang
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repairthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- Guangxi Health Commission Key Laboratory of Basic Research in Sphingolipid Metabolism Related Diseasesthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- China–USA Lipids in Health and Disease Research CenterGuilin Medical UniversityGuilinGuangxiChina
- Laboratory of Hepatobiliary and Pancreatic Surgerythe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
| | - Chunmei Li
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repairthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- Guangxi Health Commission Key Laboratory of Basic Research in Sphingolipid Metabolism Related Diseasesthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- China–USA Lipids in Health and Disease Research CenterGuilin Medical UniversityGuilinGuangxiChina
- Laboratory of Hepatobiliary and Pancreatic Surgerythe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
| | - Yongqin Wang
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repairthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
| | - Wei Dong
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repairthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
| | - Moujie Yang
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repairthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- Guangxi Health Commission Key Laboratory of Basic Research in Sphingolipid Metabolism Related Diseasesthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
| | - Junfei Jin
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repairthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- Guangxi Health Commission Key Laboratory of Basic Research in Sphingolipid Metabolism Related Diseasesthe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
- China–USA Lipids in Health and Disease Research CenterGuilin Medical UniversityGuilinGuangxiChina
- Laboratory of Hepatobiliary and Pancreatic Surgerythe Affiliated Hospital of Guilin Medical UniversityGuilinGuangxiChina
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Sansonetti M, Al Soodi B, Thum T, Jung M. Macrophage-based therapeutic approaches for cardiovascular diseases. Basic Res Cardiol 2024; 119:1-33. [PMID: 38170281 PMCID: PMC10837257 DOI: 10.1007/s00395-023-01027-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 01/05/2024]
Abstract
Despite the advances in treatment options, cardiovascular disease (CVDs) remains the leading cause of death over the world. Chronic inflammatory response and irreversible fibrosis are the main underlying pathophysiological causes of progression of CVDs. In recent decades, cardiac macrophages have been recognized as main regulatory players in the development of these complex pathophysiological conditions. Numerous approaches aimed at macrophages have been devised, leading to novel prospects for therapeutic interventions. Our review covers the advancements in macrophage-centric treatment plans for various pathologic conditions and examines the potential consequences and obstacles of employing macrophage-targeted techniques in cardiac diseases.
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Affiliation(s)
- Marida Sansonetti
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, 30625, Hannover, Germany
| | - Bashar Al Soodi
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, 30625, Hannover, Germany
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, 30625, Hannover, Germany.
- REBIRTH-Center for Translational Regenerative Medicine, Hannover Medical School, 30625, Hannover, Germany.
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), 30625, Hannover, Germany.
| | - Mira Jung
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, 30625, Hannover, Germany.
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