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Osinski V, Yellamilli A, Firulyova MM, Zhang MJ, Peck A, Auger JL, Faragher JL, Marath A, Voeller RK, O’Connell TD, Zaitsev K, Binstadt BA. Profibrotic VEGFR3-Dependent Lymphatic Vessel Growth in Autoimmune Valvular Carditis. Arterioscler Thromb Vasc Biol 2024; 44:807-821. [PMID: 38269589 PMCID: PMC10978259 DOI: 10.1161/atvbaha.123.320326] [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] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/11/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Rheumatic heart disease is the major cause of valvular heart disease in developing nations. Endothelial cells (ECs) are considered crucial contributors to rheumatic heart disease, but greater insight into their roles in disease progression is needed. METHODS We used a Cdh5-driven EC lineage-tracing approach to identify and track ECs in the K/B.g7 model of autoimmune valvular carditis. Single-cell RNA sequencing was used to characterize the EC populations in control and inflamed mitral valves. Immunostaining and conventional histology were used to evaluate lineage tracing and validate single-cell RNA-sequencing findings. The effects of VEGFR3 (vascular endothelial growth factor receptor 3) and VEGF-C (vascular endothelial growth factor C) inhibitors were tested in vivo. The functional impact of mitral valve disease in the K/B.g7 mouse was evaluated using echocardiography. Finally, to translate our findings, we analyzed valves from human patients with rheumatic heart disease undergoing mitral valve replacements. RESULTS Lineage tracing in K/B.g7 mice revealed new capillary lymphatic vessels arising from valve surface ECs during the progression of disease in K/B.g7 mice. Unsupervised clustering of mitral valve single-cell RNA-sequencing data revealed novel lymphatic valve ECs that express a transcriptional profile distinct from other valve EC populations including the recently identified PROX1 (Prospero homeobox protein 1)+ lymphatic valve ECs. During disease progression, these newly identified lymphatic valve ECs expand and upregulate a profibrotic transcriptional profile. Inhibiting VEGFR3 through multiple approaches prevented expansion of this mitral valve lymphatic network. Echocardiography demonstrated that K/B.g7 mice have left ventricular dysfunction and mitral valve stenosis. Valve lymphatic density increased with age in K/B.g7 mice and correlated with worsened ventricular dysfunction. Importantly, human rheumatic valves contained similar lymphatics in greater numbers than nonrheumatic controls. CONCLUSIONS These studies reveal a novel mode of inflammation-associated, VEGFR3-dependent postnatal lymphangiogenesis in murine autoimmune valvular carditis, with similarities to human rheumatic heart disease.
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Affiliation(s)
- Victoria Osinski
- Department of Pediatrics and Center for Immunology, University of Minnesota, Minneapolis, MN
| | - Amritha Yellamilli
- Department of Pediatrics, Stanford School of Medicine, Palo Alto, CA
- Medical Scientist Training Program, University of Minnesota, Minneapolis, MN
| | - Maria M. Firulyova
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
- Computer Technologies Laboratory, ITMO University, Saint Petersburg, Russia
| | - Michael J. Zhang
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN
- Cardiovascular Division, Department of Medicine, University of Minnesota, Minneapolis, MN
| | - Alyssa Peck
- Department of Pediatrics and Center for Immunology, University of Minnesota, Minneapolis, MN
| | - Jennifer L. Auger
- Department of Pediatrics and Center for Immunology, University of Minnesota, Minneapolis, MN
| | - Jessica L. Faragher
- Department of Pediatrics and Center for Immunology, University of Minnesota, Minneapolis, MN
| | | | | | - Timothy D. O’Connell
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN
| | - Konstantin Zaitsev
- Computer Technologies Laboratory, ITMO University, Saint Petersburg, Russia
| | - Bryce A. Binstadt
- Department of Pediatrics and Center for Immunology, University of Minnesota, Minneapolis, MN
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Yellamilli A, Ren Y, McElmurry RT, Lambert JP, Gross P, Mohsin S, Houser SR, Elrod JW, Tolar J, Garry DJ, van Berlo JH. Abcg2-expressing side population cells contribute to cardiomyocyte renewal through fusion. FASEB J 2020; 34:5642-5657. [PMID: 32100368 DOI: 10.1096/fj.201902105r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 02/10/2020] [Accepted: 02/13/2020] [Indexed: 12/15/2022]
Abstract
The adult mammalian heart has a limited regenerative capacity. Therefore, identification of endogenous cells and mechanisms that contribute to cardiac regeneration is essential for the development of targeted therapies. The side population (SP) phenotype has been used to enrich for stem cells throughout the body; however, SP cells isolated from the heart have been studied exclusively in cell culture or after transplantation, limiting our understanding of their function in vivo. We generated a new Abcg2-driven lineage-tracing mouse model with efficient labeling of SP cells. Labeled SP cells give rise to terminally differentiated cells in bone marrow and intestines. In the heart, labeled SP cells give rise to lineage-traced cardiomyocytes under homeostatic conditions with an increase in this contribution following cardiac injury. Instead of differentiating into cardiomyocytes like proposed cardiac progenitor cells, cardiac SP cells fuse with preexisting cardiomyocytes to stimulate cardiomyocyte cell cycle reentry. Our study is the first to show that fusion between cardiomyocytes and non-cardiomyocytes, identified by the SP phenotype, contribute to endogenous cardiac regeneration by triggering cardiomyocyte cell cycle reentry in the adult mammalian heart.
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Affiliation(s)
- Amritha Yellamilli
- Lillehei Heart Institute, University of Minnesota Medical School, Minneapolis, MN, USA.,Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, MN, USA.,Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Yi Ren
- Lillehei Heart Institute, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Ron T McElmurry
- Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN, USA.,Department of Pediatrics, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Jonathan P Lambert
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Polina Gross
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Sadia Mohsin
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Steven R Houser
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - John W Elrod
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Jakub Tolar
- Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN, USA.,Department of Pediatrics, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Daniel J Garry
- Lillehei Heart Institute, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Jop H van Berlo
- Lillehei Heart Institute, University of Minnesota Medical School, Minneapolis, MN, USA.,Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, MN, USA.,Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN, USA
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Chen Z, Zhu W, Bender I, Gong W, Kwak IY, Yellamilli A, Hodges TJ, Nemoto N, Zhang J, Garry DJ, van Berlo JH. Pathologic Stimulus Determines Lineage Commitment of Cardiac C-kit + Cells. Circulation 2017; 136:2359-2372. [PMID: 29021323 DOI: 10.1161/circulationaha.117.030137] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 09/20/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND Although cardiac c-kit+ cells are being tested in clinical trials, the circumstances that determine lineage differentiation of c-kit+ cells in vivo are unknown. Recent findings suggest that endogenous cardiac c-kit+ cells rarely contribute cardiomyocytes to the adult heart. We assessed whether various pathological stimuli differentially affect the eventual cell fates of c-kit+ cells. METHODS We used single-cell sequencing and genetic lineage tracing of c-kit+ cells to determine whether various pathological stimuli would result in different fates of c-kit+ cells. RESULTS Single-cell sequencing of cardiac CD45-c-kit+ cells showed innate heterogeneity, indicative of the existence of vascular and mesenchymal c-kit+ cells in normal hearts. Cardiac pressure overload resulted in a modest increase in c-kit-derived cardiomyocytes, with significant increases in the numbers of endothelial cells and fibroblasts. Doxorubicin-induced acute cardiotoxicity did not increase c-kit-derived endothelial cell fates but instead induced cardiomyocyte differentiation. Mechanistically, doxorubicin-induced DNA damage in c-kit+ cells resulted in expression of p53. Inhibition of p53 blocked cardiomyocyte differentiation in response to doxorubicin, whereas stabilization of p53 was sufficient to increase c-kit-derived cardiomyocyte differentiation. CONCLUSIONS These results demonstrate that different pathological stimuli induce different cell fates of c-kit+ cells in vivo. Although the overall rate of cardiomyocyte formation from c-kit+ cells is still below clinically relevant levels, we show that p53 is central to the ability of c-kit+ cells to adopt cardiomyocyte fates, which could lead to the development of strategies to preferentially generate cardiomyocytes from c-kit+ cells.
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Affiliation(s)
- Zhongming Chen
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.)
| | - Wuqiang Zhu
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Department of Biomedical Engineering, University of Alabama at Birmingham (W.Z., J.Z.)
| | - Ingrid Bender
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.)
| | - Wuming Gong
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.).,Stem Cell Institute, University of Minnesota, Minneapolis (W.G., D.J.G., J.H.v.B.)
| | - Il-Youp Kwak
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.)
| | - Amritha Yellamilli
- Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.).,Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis (A.Y., J.H.v.B.)
| | - Thomas J Hodges
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.)
| | - Natsumi Nemoto
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.)
| | - Jianyi Zhang
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Department of Biomedical Engineering, University of Alabama at Birmingham (W.Z., J.Z.)
| | - Daniel J Garry
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.).,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.).,Stem Cell Institute, University of Minnesota, Minneapolis (W.G., D.J.G., J.H.v.B.)
| | - Jop H van Berlo
- Department of Medicine, Cardiovascular Division, University of Minnesota, Minneapolis (Z.C., W.Z., I.B., W.G., I-Y.K., T.J.H., N.N., J.Z., D.J.G., J.H.v.B.) .,Lillehei Heart Institute, University of Minnesota, Minneapolis (Z.C., I.B., W.G., I-Y.K., A.Y., N.N., D.J.G., J.H.v.B.).,Stem Cell Institute, University of Minnesota, Minneapolis (W.G., D.J.G., J.H.v.B.).,Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis (A.Y., J.H.v.B.)
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Chen Z, Zhu W, Yellamilli A, Bender I, van Berlo JH. Abstract 23: p53 Mediates
de novo
Cardiomyocte Differentiation From c-kit Positive Cardiac Progenitor Cells. Circ Res 2016. [DOI: 10.1161/res.119.suppl_1.23] [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: 11/16/2022]
Abstract
The heart is arguably the least regenerative organ. Nonetheless, cardiac progenitor cells (CPCs) can readily be isolated from the adult heart. Moreover, we recently demonstrated that c-kit+ CPCs are able to generate de novo lineages of cardiomyocytes, endothelial cells and fibroblasts, albeit at low levels. In the present study, we assess if different pathophysiological stimuli could enhance cardiomyocyte lineage differentiation by CPCs. We first established that CPCs are heterogeneous in vivo and can be classified into three main populations based on the respective gene expression profiles: uncommitted, vascular and cardiogenic CPCs. Next, we show that transverse aortic constriction (TAC) surgery increased CPC derived cardiomyocytes by 3-fold, and enhanced non-cardiomyocyte lineages as well. Interestingly, anthracycline-induced cardiomyopathy increased CPC-derived cardiomyocytes by 35-fold. Immunostaining showed that doxorubicin stimulates p53 expression within CPCs and selectively enhanced CPC-derived cardiomyocyte lineage. The selective p53 inhibitor, pifithrin α, completely blocked the doxorubicin-mediated increase in de novo cardiomyocyte formation. Administration of p53 Activator III, RITA (reactivation of p53 and induction of tumor cell apoptosis), was sufficient to induce CPC-derived cardiomyocyte differentiation. These results demonstrate that anthracyclines can increase de novo cardiomyocyte differentiation from CPCs through activation of the p53 pathway. Ultimately, these findings might lead to new therapies for cardiac regeneration by inducing cardiomyocyte differentiation by endogenous CPCs.
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Stelter Z, Strakova J, Yellamilli A, Fischer K, Sharpe K, Townsend D. Hypoxia-induced cardiac injury in dystrophic mice. Am J Physiol Heart Circ Physiol 2016; 310:H938-48. [PMID: 26851247 DOI: 10.1152/ajpheart.00917.2015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/02/2016] [Indexed: 02/07/2023]
Abstract
Duchenne muscular dystrophy (DMD) is a disease of progressive destruction of striated muscle, resulting in muscle weakness with progressive respiratory and cardiac failure. Respiratory and cardiac disease are the leading causes of death in DMD patients. Previous studies have suggested an important link between cardiac dysfunction and hypoxia in the dystrophic heart; these studies aim to understand the mechanism underlying this connection. Here we demonstrate that anesthetized dystrophic mice display significant mortality following acute exposure to hypoxia. This increased mortality is associated with a significant metabolic acidosis, despite having significantly higher levels of arterial Po2 Chronic hypoxia does not result in mortality, but rather is characterized by marked cardiac fibrosis. Studies in isolated hearts reveal that the contractile function of dystrophic hearts is highly susceptible to short bouts of ischemia, but these hearts tolerate prolonged acidosis better than wild-type hearts, indicating an increased sensitivity of the dystrophic heart to hypoxia. Dystrophic hearts display decreased cardiac efficiency and oxygen extraction. Isolated dystrophic cardiomyocytes and hearts have normal levels of FCCP-induced oxygen consumption, and mitochondrial morphology and content are normal in the dystrophic heart. These studies demonstrate reductions in cardiac efficiency and oxygen extraction of the dystrophic heart. The underlying cause of this reduced oxygen extraction is not clear; however, the current studies suggest that large disruptions of mitochondrial respiratory function or coronary flow regulation are not responsible. This finding is significant, as hypoxia is a common and largely preventable component of DMD that may contribute to the progression of the cardiac disease in DMD patients.
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Affiliation(s)
- Zachary Stelter
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Jana Strakova
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Amritha Yellamilli
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Kaleb Fischer
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Katharine Sharpe
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - DeWayne Townsend
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota
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