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Park KC, Crump NT, Louwman N, Krywawych S, Cheong YJ, Vendrell I, Gill EK, Gunadasa-Rohling M, Ford KL, Hauton D, Fournier M, Pires E, Watson L, Roseman G, Holder J, Koschinski A, Carnicer R, Curtis MK, Zaccolo M, Hulikova A, Fischer R, Kramer HB, McCullagh JSO, Trefely S, Milne TA, Swietach P. Disrupted propionate metabolism evokes transcriptional changes in the heart by increasing histone acetylation and propionylation. Nat Cardiovasc Res 2023; 2:1221-1245. [PMID: 38500966 PMCID: PMC7615744 DOI: 10.1038/s44161-023-00365-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 10/15/2023] [Indexed: 03/20/2024]
Abstract
Propiogenic substrates and gut bacteria produce propionate, a post-translational protein modifier. In this study, we used a mouse model of propionic acidaemia (PA) to study how disturbances to propionate metabolism result in histone modifications and changes to gene expression that affect cardiac function. Plasma propionate surrogates were raised in PA mice, but female hearts manifested more profound changes in acyl-CoAs, histone propionylation and acetylation, and transcription. These resulted in moderate diastolic dysfunction with raised diastolic Ca2+, expanded end-systolic ventricular volume and reduced stroke volume. Propionate was traced to histone H3 propionylation and caused increased acetylation genome-wide, including at promoters of Pde9a and Mme, genes related to contractile dysfunction through downscaled cGMP signaling. The less severe phenotype in male hearts correlated with β-alanine buildup. Raising β-alanine in cultured myocytes treated with propionate reduced propionyl-CoA levels, indicating a mechanistic relationship. Thus, we linked perturbed propionate metabolism to epigenetic changes that impact cardiac function.
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Affiliation(s)
- Kyung Chan Park
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Nicholas T. Crump
- MRC Molecular Haematology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
- Present Address: Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, UK
| | - Niamh Louwman
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Steve Krywawych
- Department of Chemical Pathology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Yuen Jian Cheong
- Epigenetics & Signalling Programmes, Babraham Institute, Cambridge, UK
| | - Iolanda Vendrell
- Nuffield Department of Medicine, Target Discovery Institute, Oxford, UK
- Nuffield Department of Medicine, Chinese Academy for Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Eleanor K. Gill
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | | | - Kerrie L. Ford
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - David Hauton
- Department of Chemistry, University of Oxford, Oxford, UK
| | | | | | - Lydia Watson
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Gerald Roseman
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - James Holder
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - Andreas Koschinski
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Ricardo Carnicer
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - M. Kate Curtis
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Manuela Zaccolo
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Alzbeta Hulikova
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Roman Fischer
- Nuffield Department of Medicine, Target Discovery Institute, Oxford, UK
- Nuffield Department of Medicine, Chinese Academy for Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Holger B. Kramer
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK
| | | | - Sophie Trefely
- Epigenetics & Signalling Programmes, Babraham Institute, Cambridge, UK
| | - Thomas A. Milne
- MRC Molecular Haematology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Pawel Swietach
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
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2
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Akbar N, Braithwaite AT, Corr EM, Koelwyn GJ, van Solingen C, Cochain C, Saliba AE, Corbin A, Pezzolla D, Møller Jørgensen M, Bæk R, Edgar L, De Villiers C, Gunadasa-Rohling M, Banerjee A, Paget D, Lee C, Hogg E, Costin A, Dhaliwal R, Johnson E, Krausgruber T, Riepsaame J, Melling GE, Shanmuganathan M, Bock C, Carter DRF, Channon KM, Riley PR, Udalova IA, Moore KJ, Anthony DC, Choudhury RP. Rapid neutrophil mobilization by VCAM-1+ endothelial cell-derived extracellular vesicles. Cardiovasc Res 2023; 119:236-251. [PMID: 35134856 PMCID: PMC10022859 DOI: 10.1093/cvr/cvac012] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 01/28/2022] [Indexed: 01/25/2023] Open
Abstract
AIMS Acute myocardial infarction rapidly increases blood neutrophils (<2 h). Release from bone marrow, in response to chemokine elevation, has been considered their source, but chemokine levels peak up to 24 h after injury, and after neutrophil elevation. This suggests that additional non-chemokine-dependent processes may be involved. Endothelial cell (EC) activation promotes the rapid (<30 min) release of extracellular vesicles (EVs), which have emerged as an important means of cell-cell signalling and are thus a potential mechanism for communicating with remote tissues. METHODS AND RESULTS Here, we show that injury to the myocardium rapidly mobilizes neutrophils from the spleen to peripheral blood and induces their transcriptional activation prior to arrival at the injured tissue. Time course analysis of plasma-EV composition revealed a rapid and selective increase in EVs bearing VCAM-1. These EVs, which were also enriched for miRNA-126, accumulated preferentially in the spleen where they induced local inflammatory gene and chemokine protein expression, and mobilized splenic-neutrophils to peripheral blood. Using CRISPR/Cas9 genome editing, we generated VCAM-1-deficient EC-EVs and showed that its deletion removed the ability of EC-EVs to provoke the mobilization of neutrophils. Furthermore, inhibition of miRNA-126 in vivo reduced myocardial infarction size in a mouse model. CONCLUSIONS Our findings show a novel EV-dependent mechanism for the rapid mobilization of neutrophils to peripheral blood from a splenic reserve and establish a proof of concept for functional manipulation of EV-communications through genetic alteration of parent cells.
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Affiliation(s)
- Naveed Akbar
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Adam T Braithwaite
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Emma M Corr
- NYU Cardiovascular Research Center, Department of Medicine, Division of Cardiology, School of Medicine, New York University School of Medicine, 435 E 30th St. New York, NY 10016, USA
| | - Graeme J Koelwyn
- NYU Cardiovascular Research Center, Department of Medicine, Division of Cardiology, School of Medicine, New York University School of Medicine, 435 E 30th St. New York, NY 10016, USA
| | - Coen van Solingen
- NYU Cardiovascular Research Center, Department of Medicine, Division of Cardiology, School of Medicine, New York University School of Medicine, 435 E 30th St. New York, NY 10016, USA
| | - Clément Cochain
- Comprehensive Heart Failure Center, University Hospital Wurzburg, Anstalt des öffentlichen Rechts Josef-Schneider-Straße 2 97080 Würzburg, Germany
| | - Antoine-Emmanuel Saliba
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz-Center for Infection Research (HZI), Inhoffenstraße 7 38124 Braunschweig, Würzburg, Germany
| | - Alastair Corbin
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Dr, Headington, Oxford OX3 7FY, UK
| | - Daniela Pezzolla
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Malene Møller Jørgensen
- Department of Clinical Immunology, Aalborg University Hospital, Urbansgade 32-36, DK-9000, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Søndre Skovvej 15, Aalborg, Denmark
| | - Rikke Bæk
- Department of Clinical Medicine, Aalborg University, Søndre Skovvej 15, Aalborg, Denmark
| | - Laurienne Edgar
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Carla De Villiers
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building Parks Road, OX1 3PT, Oxford, UK
| | - Mala Gunadasa-Rohling
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building Parks Road, OX1 3PT, Oxford, UK
| | - Abhirup Banerjee
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Daan Paget
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Charlotte Lee
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Eleanor Hogg
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
| | - Adam Costin
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Raman Dhaliwal
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Errin Johnson
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Thomas Krausgruber
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, AKH BT 25.3, Vienna, Austria
| | - Joey Riepsaame
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Genevieve E Melling
- Department of Biological and Medical Sciences, Oxford Brookes University, Headington Campus Oxford OX3 0BP, UK
- Institute of Clinical Sciences, School of Biomedical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Mayooran Shanmuganathan
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
- The OxAMI Study is detailed in the Supplementary Acknowledgments
- Acute Vascular Imaging Centre, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
| | - Christoph Bock
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, AKH BT 25.3, Vienna, Austria
- Institute of Artificial Intelligence, Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Spitalgasse 23, BT88 1090, Vienna, Austria
| | - David R F Carter
- Department of Biological and Medical Sciences, Oxford Brookes University, Headington Campus Oxford OX3 0BP, UK
| | - Keith M Channon
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
- The OxAMI Study is detailed in the Supplementary Acknowledgments
- Acute Vascular Imaging Centre, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building Parks Road, OX1 3PT, Oxford, UK
| | - Irina A Udalova
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Dr, Headington, Oxford OX3 7FY, UK
| | - Kathryn J Moore
- NYU Cardiovascular Research Center, Department of Medicine, Division of Cardiology, School of Medicine, New York University School of Medicine, 435 E 30th St. New York, NY 10016, USA
| | - Daniel C Anthony
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Robin P Choudhury
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Level 6, West Wing John Radcliffe Hospital Headington Oxford OX3 9DU, UK
- The OxAMI Study is detailed in the Supplementary Acknowledgments
- Acute Vascular Imaging Centre, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
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3
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Wilson AD, Richards MA, Curtis MK, Gunadasa-Rohling M, Monterisi S, Loonat AA, Miller JJ, Ball V, Lewis A, Tyler DJ, Moshnikova A, Andreev OA, Reshetnyak YK, Carr C, Swietach P. Acidic environments trigger intracellular H+-sensing FAK proteins to re-balance sarcolemmal acid-base transporters and auto-regulate cardiomyocyte pH. Cardiovasc Res 2022; 118:2946-2959. [PMID: 34897412 PMCID: PMC9648823 DOI: 10.1093/cvr/cvab364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 12/08/2021] [Indexed: 11/12/2022] Open
Abstract
AIMS In cardiomyocytes, acute disturbances to intracellular pH (pHi) are promptly corrected by a system of finely tuned sarcolemmal acid-base transporters. However, these fluxes become thermodynamically re-balanced in acidic environments, which inadvertently causes their set-point pHi to fall outside the physiological range. It is unclear whether an adaptive mechanism exists to correct this thermodynamic challenge, and return pHi to normal. METHODS AND RESULTS Following left ventricle cryo-damage, a diffuse pattern of low extracellular pH (pHe) was detected by acid-sensing pHLIP. Despite this, pHi measured in the beating heart (13C NMR) was normal. Myocytes had adapted to their acidic environment by reducing Cl-/HCO3- exchange (CBE)-dependent acid-loading and increasing Na+/H+ exchange (NHE1)-dependent acid-extrusion, as measured by fluorescence (cSNARF1). The outcome of this adaptation on pHi is revealed as a cytoplasmic alkalinization when cells are superfused at physiological pHe. Conversely, mice given oral bicarbonate (to improve systemic buffering) had reduced myocardial NHE1 expression, consistent with a needs-dependent expression of pHi-regulatory transporters. The response to sustained acidity could be replicated in vitro using neonatal ventricular myocytes incubated at low pHe for 48 h. The adaptive increase in NHE1 and decrease in CBE activities was linked to Slc9a1 (NHE1) up-regulation and Slc4a2 (AE2) down-regulation. This response was triggered by intracellular H+ ions because it persisted in the absence of CO2/HCO3- and became ablated when acidic incubation media had lower chloride, a solution manoeuvre that reduces the extent of pHi-decrease. Pharmacological inhibition of FAK-family non-receptor kinases, previously characterized as pH-sensors, ablated this pHi autoregulation. In support of a pHi-sensing role, FAK protein Pyk2 (auto)phosphorylation was reduced within minutes of exposure to acidity, ahead of adaptive changes to pHi control. CONCLUSIONS Cardiomyocytes fine-tune the expression of pHi-regulators so that pHi is at least 7.0. This autoregulatory feedback mechanism defines physiological pHi and protects it during pHe vulnerabilities.
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Affiliation(s)
- Abigail D Wilson
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Mark A Richards
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - M Kate Curtis
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Mala Gunadasa-Rohling
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Stefania Monterisi
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Aminah A Loonat
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Jack J Miller
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK
- Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Radcliffe Department of Medicine, Level 0, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
| | - Vicky Ball
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Andrew Lewis
- Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Radcliffe Department of Medicine, Level 0, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
| | - Damian J Tyler
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
- Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Radcliffe Department of Medicine, Level 0, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
| | - Anna Moshnikova
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02881, USA
| | - Oleg A Andreev
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02881, USA
| | - Yana K Reshetnyak
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02881, USA
| | - Carolyn Carr
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
| | - Pawel Swietach
- Department of Physiology, Anatomy & Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford OX1 3PT, UK
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4
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Gamen E, Price EL, Pezzolla D, De Villiers C, Gunadasa-Rohling M, Salama R, Mole DR, Bishop T, Pugh CW, Choudhury RP, Carr CA, Vieira JM, Riley PR. Re-activation of HIF signalling pathway in the epicardium improves heart regeneration after myocardial infarction. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): British Heart Foundation
Background
In mouse, cardiac regenerative capacity is maintained for the first week after birth but lost thereafter. Reactivation of this process holds great therapeutic potential, however, the molecular pathways that might be targeted to extend neonatal regeneration remain elusive. Here, we explore a role for hypoxia inducible factor (HIF) family of transcription factors on the regulation of epicardial activity which is essential for cardiac response to injury.
Purpose
HIF signalling might be involved in the quiescence of the epicardium observed in the first week of life. Thus, HIF stabilisation may induce epicardial re-activation and extend the 7-day regenerative window in a neonate mouse model of myocardial infarction (MI).
Methods
We analysed epicardial expression of HIF signalling during embryonic development, and in a regenerative post-natal day 1 (P1) versus non-regenerative (P7) mouse model by single cell RNA-sequencing. Next, we established in vitro epicardial explants to confirm the role of HIF signalling in epicardial activation, and finally we induced MI by permanent ligation of the proximal left anterior descending (LAD) coronary artery in P7 mice to test weather HIF signalling re-activation improved heart regeneration in a non-regenerative model.
Results
Expression of both HIF-1α and HIF-2α is very pronounced at early stages of heart development and gradually decreases throughout gestation. The epicardium preferentially expresses HIF-1α by embryonic day (E) 16.5. Postnatally, GO term analysis showed an enrichment of hypoxia-related pathways in P1 compared to P7 hearts, largely in the epicardial cell population. Accordingly, expression of Phd2, encoding for the main suppressor of HIF signalling, was enriched in P7 derived epicardial cells. Notably, the increase in Phd2 levels coincided with a clear reduction in the expression of Wilms’ tumour 1 (Wt1) in P7 versus P1 hearts, a key player in the epicardial activation. In vitro studies on epicardial explants confirmed regulation of WT1 expression and migration capacity following genetical and pharmacological modulation of HIF signalling. Finally, in vivo targeting of PHD enzymes through pharmacological inhibition with clinically approved drugs in a neonatal mouse model of MI led to prolonged epicardial activation, increased vascularisation, augmented infarct resolution and preserved cardiac function up to 3 weeks after injury.
Conclusions
Together, these findings show that modulation of HIF signalling can regulate epicardial activity and improve heart regeneration capacity beyond the 7-day regenerative window and may represent a viable therapeutic strategy for treating ischaemic heart disease.
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Affiliation(s)
- E Gamen
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - EL Price
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - D Pezzolla
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - C De Villiers
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - M Gunadasa-Rohling
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - R Salama
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - DR Mole
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - T Bishop
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - CW Pugh
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - RP Choudhury
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - CA Carr
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - JM Vieira
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - PR Riley
- University of Oxford , Oxford , United Kingdom of Great Britain & Northern Ireland
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5
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Hulikova A, Park KC, Loonat AA, Gunadasa-Rohling M, Curtis MK, Chung YJ, Wilson A, Carr CA, Trafford AW, Fournier M, Moshnikova A, Andreev OA, Reshetnyak YK, Riley PR, Smart N, Milne TA, Crump NT, Swietach P. Alkaline nucleoplasm facilitates contractile gene expression in the mammalian heart. Basic Res Cardiol 2022; 117:17. [PMID: 35357563 PMCID: PMC8971196 DOI: 10.1007/s00395-022-00924-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 03/04/2022] [Accepted: 03/11/2022] [Indexed: 01/31/2023]
Abstract
Cardiac contractile strength is recognised as being highly pH-sensitive, but less is known about the influence of pH on cardiac gene expression, which may become relevant in response to changes in myocardial metabolism or vascularization during development or disease. We sought evidence for pH-responsive cardiac genes, and a physiological context for this form of transcriptional regulation. pHLIP, a peptide-based reporter of acidity, revealed a non-uniform pH landscape in early-postnatal myocardium, dissipating in later life. pH-responsive differentially expressed genes (pH-DEGs) were identified by transcriptomics of neonatal cardiomyocytes cultured over a range of pH. Enrichment analysis indicated "striated muscle contraction" as a pH-responsive biological process. Label-free proteomics verified fifty-four pH-responsive gene-products, including contractile elements and the adaptor protein CRIP2. Using transcriptional assays, acidity was found to reduce p300/CBP acetylase activity and, its a functional readout, inhibit myocardin, a co-activator of cardiac gene expression. In cultured myocytes, acid-inhibition of p300/CBP reduced H3K27 acetylation, as demonstrated by chromatin immunoprecipitation. H3K27ac levels were more strongly reduced at promoters of acid-downregulated DEGs, implicating an epigenetic mechanism of pH-sensitive gene expression. By tandem cytoplasmic/nuclear pH imaging, the cardiac nucleus was found to exercise a degree of control over its pH through Na+/H+ exchangers at the nuclear envelope. Thus, we describe how extracellular pH signals gain access to the nucleus and regulate the expression of a subset of cardiac genes, notably those coding for contractile proteins and CRIP2. Acting as a proxy of a well-perfused myocardium, alkaline conditions are permissive for expressing genes related to the contractile apparatus.
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Affiliation(s)
- Alzbeta Hulikova
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Kyung Chan Park
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Aminah A Loonat
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Mala Gunadasa-Rohling
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - M Kate Curtis
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Yu Jin Chung
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Abigail Wilson
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Carolyn A Carr
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Andrew W Trafford
- Unit of Cardiac Physiology, Division of Cardiovascular Sciences, University of Manchester, Manchester, UK
| | - Marjorie Fournier
- Department of Biochemistry, Advanced Proteomics Facility, University of Oxford, Oxford, UK
| | - Anna Moshnikova
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI, 02881, USA
| | - Oleg A Andreev
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI, 02881, USA
| | - Yana K Reshetnyak
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI, 02881, USA
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Nicola Smart
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK
| | - Thomas A Milne
- MRC Molecular Haematology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, NIHR Oxford Biomedical Research Centre Haematology Theme, University of Oxford, Oxford, UK
| | - Nicholas T Crump
- MRC Molecular Haematology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, NIHR Oxford Biomedical Research Centre Haematology Theme, University of Oxford, Oxford, UK
| | - Pawel Swietach
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Parks Road, Oxford, OX1 3PT, UK.
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6
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del Campo CV, Liaw NY, Gunadasa-Rohling M, Matthaei M, Braga L, Kennedy T, Salinas G, Voigt N, Giacca M, Zimmermann WH, Riley PR. Regenerative potential of epicardium-derived extracellular vesicles mediated by conserved miRNA transfer. Cardiovasc Res 2022; 118:597-611. [PMID: 33599250 PMCID: PMC8803084 DOI: 10.1093/cvr/cvab054] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 02/12/2021] [Indexed: 12/19/2022] Open
Abstract
AIMS After a myocardial infarction, the adult human heart lacks sufficient regenerative capacity to restore lost tissue, leading to heart failure progression. Finding novel ways to reprogram adult cardiomyocytes into a regenerative state is a major therapeutic goal. The epicardium, the outermost layer of the heart, contributes cardiovascular cell types to the forming heart and is a source of trophic signals to promote heart muscle growth during embryonic development. The epicardium is also essential for heart regeneration in zebrafish and neonatal mice and can be reactivated after injury in adult hearts to improve outcome. A recently identified mechanism of cell-cell communication and signalling is that mediated by extracellular vesicles (EVs). Here, we aimed to investigate epicardial signalling via EV release in response to cardiac injury and as a means to optimize cardiac repair and regeneration. METHODS AND RESULTS We isolated epicardial EVs from mouse and human sources and targeted the cardiomyocyte population. Epicardial EVs enhanced proliferation in H9C2 cells and in primary neonatal murine cardiomyocytes in vitro and promoted cell cycle re-entry when injected into the injured area of infarcted neonatal hearts. These EVs also enhanced regeneration in cryoinjured engineered human myocardium (EHM) as a novel model of human myocardial injury. Deep RNA-sequencing of epicardial EV cargo revealed conserved microRNAs (miRs) between human and mouse epicardial-derived exosomes, and the effects on cell cycle re-entry were recapitulated by administration of cargo miR-30a, miR-100, miR-27a, and miR-30e to human stem cell-derived cardiomyocytes and cryoinjured EHM constructs. CONCLUSION Here, we describe the first characterization of epicardial EV secretion, which can signal to promote proliferation of cardiomyocytes in infarcted mouse hearts and in a human model of myocardial injury, resulting in enhanced contractile function. Analysis of exosome cargo in mouse and human identified conserved pro-regenerative miRs, which in combination recapitulated the therapeutic effects of promoting cardiomyocyte proliferation.
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Affiliation(s)
- Cristina Villa del Campo
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, Sherrington Building, Sherrington Rd, Oxford OX1 3PT, UK
| | - Norman Y Liaw
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Göttingen, Robert-Koch-Straße 42a, 37075 Göttingen, Germany
| | - Mala Gunadasa-Rohling
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, Sherrington Building, Sherrington Rd, Oxford OX1 3PT, UK
| | - Moritz Matthaei
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany
| | - Luca Braga
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Località Padriciano, 99, 34149 Trieste TS, Italy
- School of Cardiovascular Medicine & Sciences, British Heart Foundation Centre, King's College London, Strand, London WC2R 2L, UK
| | - Tahnee Kennedy
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, Sherrington Building, Sherrington Rd, Oxford OX1 3PT, UK
| | - Gabriela Salinas
- NGS- Integrative Genomics Core Unit (NIG), Institute of Human Genetics, University Medical Centre Göttingen (UMG), Robert-Koch-Str. 40, 37075 Göttingen, Germany
| | - Niels Voigt
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Göttingen, Robert-Koch-Straße 42a, 37075 Göttingen, Germany
| | - Mauro Giacca
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Località Padriciano, 99, 34149 Trieste TS, Italy
- School of Cardiovascular Medicine & Sciences, British Heart Foundation Centre, King's College London, Strand, London WC2R 2L, UK
| | - Wolfram-Hubertus Zimmermann
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Göttingen, Robert-Koch-Straße 42a, 37075 Göttingen, Germany
| | - Paul Richard Riley
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, Sherrington Building, Sherrington Rd, Oxford OX1 3PT, UK
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7
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Simões FC, Cahill TJ, Kenyon A, Gavriouchkina D, Vieira JM, Sun X, Pezzolla D, Ravaud C, Masmanian E, Weinberger M, Mayes S, Lemieux ME, Barnette DN, Gunadasa-Rohling M, Williams RM, Greaves DR, Trinh LA, Fraser SE, Dallas SL, Choudhury RP, Sauka-Spengler T, Riley PR. Macrophages directly contribute collagen to scar formation during zebrafish heart regeneration and mouse heart repair. Nat Commun 2020; 11:600. [PMID: 32001677 PMCID: PMC6992796 DOI: 10.1038/s41467-019-14263-2] [Citation(s) in RCA: 193] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 12/27/2019] [Indexed: 12/14/2022] Open
Abstract
Canonical roles for macrophages in mediating the fibrotic response after a heart attack include extracellular matrix turnover and activation of cardiac fibroblasts to initiate collagen deposition. Here we reveal that macrophages directly contribute collagen to the forming post-injury scar. Unbiased transcriptomics shows an upregulation of collagens in both zebrafish and mouse macrophages following heart injury. Adoptive transfer of macrophages, from either collagen-tagged zebrafish or adult mouse GFPtpz-collagen donors, enhances scar formation via cell autonomous production of collagen. In zebrafish, the majority of tagged collagen localises proximal to the injury, within the overlying epicardial region, suggesting a possible distinction between macrophage-deposited collagen and that predominantly laid-down by myofibroblasts. Macrophage-specific targeting of col4a3bpa and cognate col4a1 in zebrafish significantly reduces scarring in cryoinjured hosts. Our findings contrast with the current model of scarring, whereby collagen deposition is exclusively attributed to myofibroblasts, and implicate macrophages as direct contributors to fibrosis during heart repair. Macrophages mediate the fibrotic response after a heart attack by extracellular matrix turnover and cardiac fibroblasts activation. Here the authors identify an evolutionarily-conserved function of macrophages that contributes directly to the forming post-injury scar through cell-autonomous deposition of collagen.
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Affiliation(s)
- Filipa C Simões
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.,BHF Oxbridge Centre of Regenerative Medicine, University of Oxford, Oxford, UK
| | - Thomas J Cahill
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,BHF Oxbridge Centre of Regenerative Medicine, University of Oxford, Oxford, UK.,Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Amy Kenyon
- Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Daria Gavriouchkina
- Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.,Molecular Genetics Unit, Okinawa Institute of Science & Technology, 1919-1 Tancha, Onna, 904-0495, Japan
| | - Joaquim M Vieira
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,BHF Oxbridge Centre of Regenerative Medicine, University of Oxford, Oxford, UK
| | - Xin Sun
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,BHF Oxbridge Centre of Regenerative Medicine, University of Oxford, Oxford, UK
| | - Daniela Pezzolla
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Christophe Ravaud
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,BHF Oxbridge Centre of Regenerative Medicine, University of Oxford, Oxford, UK
| | - Eva Masmanian
- Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Michael Weinberger
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Sarah Mayes
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK.,Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | | | - Damien N Barnette
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK
| | - Mala Gunadasa-Rohling
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK
| | - Ruth M Williams
- Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - David R Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Le A Trinh
- Translational Imaging Centre, University of Southern California, Los Angeles, CA, USA
| | - Scott E Fraser
- Translational Imaging Centre, University of Southern California, Los Angeles, CA, USA
| | - Sarah L Dallas
- School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Robin P Choudhury
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Tatjana Sauka-Spengler
- Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK. .,BHF Oxbridge Centre of Regenerative Medicine, University of Oxford, Oxford, UK.
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8
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Affiliation(s)
- Mala Gunadasa-Rohling
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, UK (M.G.-R., M.M., J.E.S., P.R.R.)
| | - Megan Masters
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, UK (M.G.-R., M.M., J.E.S., P.R.R.)
| | - Mahon L Maguire
- British Heart Foundation, Experimental Magnetic Resonance Unit, Wellcome Trust Centre for Human Genetics, Roosevelt Dr, Oxford, UK (M.L.M., J.E.S.).,RDM Cardiovascular Medicine, John Radcliffe Hospital, Headley Way, Headington, Oxford UK (M.L.M., J.E.S.)
| | - Sean C Smart
- Department of Oncology, Cancer Research UK, Medical Research Council, Oxford Institute for Radiation Oncology, University of Oxford, UK (S.C.S.)
| | - Jürgen E Schneider
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, UK (M.G.-R., M.M., J.E.S., P.R.R.).,British Heart Foundation, Experimental Magnetic Resonance Unit, Wellcome Trust Centre for Human Genetics, Roosevelt Dr, Oxford, UK (M.L.M., J.E.S.).,RDM Cardiovascular Medicine, John Radcliffe Hospital, Headley Way, Headington, Oxford UK (M.L.M., J.E.S.).,Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, LIGHT Laboratories, Clarendon Way, University of Leeds, UK (J.E.S.)
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, British Heart Foundation, Oxbridge Centre of Regenerative Medicine, University of Oxford, UK (M.G.-R., M.M., J.E.S., P.R.R.)
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9
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Payne S, Gunadasa-Rohling M, Neal A, Redpath AN, Patel J, Chouliaras KM, Ratnayaka I, Smart N, De Val S. Regulatory pathways governing murine coronary vessel formation are dysregulated in the injured adult heart. Nat Commun 2019; 10:3276. [PMID: 31332177 PMCID: PMC6646353 DOI: 10.1038/s41467-019-10710-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 05/21/2019] [Indexed: 01/01/2023] Open
Abstract
The survival of ischaemic cardiomyocytes after myocardial infarction (MI) depends on the formation of new blood vessels. However, endogenous neovascularization is inefficient and the regulatory pathways directing coronary vessel growth are not well understood. Here we describe three independent regulatory pathways active in coronary vessels during development through analysis of the expression patterns of differentially regulated endothelial enhancers in the heart. The angiogenic VEGFA-MEF2 regulatory pathway is predominantly active in endocardial-derived vessels, whilst SOXF/RBPJ and BMP-SMAD pathways are seen in sinus venosus-derived arterial and venous coronaries, respectively. Although all developmental pathways contribute to post-MI vessel growth in the neonate, none are active during neovascularization after MI in adult hearts. This was particularly notable for the angiogenic VEGFA-MEF2 pathway, otherwise active in adult hearts and during neoangiogenesis in other adult settings. Our results therefore demonstrate a fundamental divergence between the regulation of coronary vessel growth in healthy and ischemic adult hearts. How coronary vessels develop and respond to injury is not fully understood. Here, the authors use murine enhancer:reporter models to identify three transcriptional pathways active in different parts of coronary vasculature. These also contribute to neovascularization in the injured neonatal, but not adult, heart.
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Affiliation(s)
- Sophie Payne
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,BHF Centre of Regenerative Medicine, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Mala Gunadasa-Rohling
- BHF Centre of Regenerative Medicine, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Alice Neal
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,BHF Centre of Regenerative Medicine, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Andia N Redpath
- BHF Centre of Regenerative Medicine, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Jyoti Patel
- Division of Cardiovascular Medicine, BHF Centre of Research Excellence, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Kira M Chouliaras
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Indrika Ratnayaka
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Nicola Smart
- BHF Centre of Regenerative Medicine, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK.
| | - Sarah De Val
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK. .,BHF Centre of Regenerative Medicine, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK.
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10
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Vieira JM, Norman S, Villa Del Campo C, Cahill TJ, Barnette DN, Gunadasa-Rohling M, Johnson LA, Greaves DR, Carr CA, Jackson DG, Riley PR. The cardiac lymphatic system stimulates resolution of inflammation following myocardial infarction. J Clin Invest 2018; 128:3402-3412. [PMID: 29985167 PMCID: PMC6063482 DOI: 10.1172/jci97192] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 05/09/2018] [Indexed: 02/02/2023] Open
Abstract
Myocardial infarction (MI) arising from obstruction of the coronary circulation engenders massive cardiomyocyte loss and replacement by non-contractile scar tissue, leading to pathological remodeling, dysfunction, and ultimately heart failure. This is presently a global health problem for which there is no effective cure. Following MI, the innate immune system directs the phagocytosis of dead cell debris in an effort to stimulate cell repopulation and tissue renewal. In the mammalian adult heart, however, the persistent influx of immune cells, coupled with the lack of an inherent regenerative capacity, results in cardiac fibrosis. Here, we reveal that stimulation of cardiac lymphangiogenesis with VEGF-C improves clearance of the acute inflammatory response after MI by trafficking immune cells to draining mediastinal lymph nodes (MLNs) in a process dependent on lymphatic vessel endothelial hyaluronan receptor 1 (LYVE-1). Deletion of Lyve1 in mice, preventing docking and transit of leukocytes through the lymphatic endothelium, results in exacerbation of chronic inflammation and long-term deterioration of cardiac function. Our findings support targeting of the lymphatic/immune cell axis as a therapeutic paradigm to promote immune modulation and heart repair.
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Affiliation(s)
- Joaquim Miguel Vieira
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
| | - Sophie Norman
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
| | | | - Thomas J Cahill
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
| | - Damien N Barnette
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
| | - Mala Gunadasa-Rohling
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
| | - Louise A Johnson
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital
| | - David R Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Carolyn A Carr
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
| | - David G Jackson
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital
| | - Paul R Riley
- Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics
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11
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Barnette DN, Cahill TJ, Gunadasa-Rohling M, Carr CA, Freeman M, Riley PR. iRhom2-mediated proinflammatory signalling regulates heart repair following myocardial infarction. JCI Insight 2018; 3:98268. [PMID: 29415889 PMCID: PMC5821194 DOI: 10.1172/jci.insight.98268] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 12/29/2017] [Indexed: 12/22/2022] Open
Abstract
The role of proinflammation, and specifically TNF-α, on downstream fibrosis and healing after cardiac injury remains unknown. Using iRhom2-deficient mice, which lack myeloid-specific shedding of TNF-α, we reveal increased macrophages (MΦs) that were skewed towards a more proinflammatory (M1) state at day 4, followed by more reparative, antiinflammatory (M2) state at day 7 after myocardial infarction (MI). However, associated functional cytokine expression was significantly reduced in iRhom2-mutant M1 and M2 MΦs, respectively. A dampened proinflammatory signature in iRhom2-deficient mice during the acute phase of injury and subsequent changes in MΦ polarization were associated with reduced phagocytosis and a more sparse distribution within the scar region. This resulted in impaired collagen deposition and fibrosis, and increased left ventricular remodelling and mortality in iRhom2-deficient mice after MI. Our findings reveal a requirement for an iRhom2-mediated proinflammatory response during downstream scarring and fibrosis, which is driven in part by TNF-α signaling. These conclusions challenge the existing model that infarct repair is determined exclusively by antiinflammatory signaling of M2 MΦs, and as such we propose an alternative view of immunomodulation to maintain effective healing after infarction. Optimal scarring and survival after myocardial infarction is dependent upon the initial wave of inflammation after injury.
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Affiliation(s)
- Damien N Barnette
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom (UK)
| | - Thomas J Cahill
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom (UK).,Department of Cardiovascular Medicine, University of Oxford, Level 6, West Wing, John Radcliffe Hospital, Oxford, UK
| | - Mala Gunadasa-Rohling
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom (UK)
| | - Carolyn A Carr
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom (UK)
| | - Matthew Freeman
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom (UK)
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