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Sun J, Peterson EA, Chen X, Wang J. ptx3a + fibroblast/epicardial cells provide a transient macrophage niche to promote heart regeneration. Cell Rep 2024; 43:114092. [PMID: 38607913 PMCID: PMC11092985 DOI: 10.1016/j.celrep.2024.114092] [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: 11/17/2023] [Revised: 02/28/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Macrophages conduct critical roles in heart repair, but the niche required to nurture and anchor them is poorly studied. Here, we investigated the macrophage niche in the regenerating heart. We analyzed cell-cell interactions through published single-cell RNA sequencing datasets and identified a strong interaction between fibroblast/epicardial (Fb/Epi) cells and macrophages. We further visualized the association of macrophages with Fb/Epi cells and the blockage of macrophage response without Fb/Epi cells in the regenerating zebrafish heart. Moreover, we found that ptx3a+ epicardial cells associate with reparative macrophages, and their depletion resulted in fewer reparative macrophages. Further, we identified csf1a expression in ptx3a+ cells and determined that pharmacological inhibition of the csf1a pathway or csf1a knockout blocked the reparative macrophage response. Moreover, we found that genetic overexpression of csf1a enhanced the reparative macrophage response with or without heart injury. Altogether, our studies illuminate a cardiac Fb/Epi niche, which mediates a beneficial macrophage response after heart injury.
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Affiliation(s)
- Jisheng Sun
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Elizabeth A Peterson
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Xin Chen
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Jinhu Wang
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA.
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2
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Peterson EA, Sun J, Chen X, Wang J. Neutrophils facilitate the epicardial regenerative response after zebrafish heart injury. Dev Biol 2024; 508:93-106. [PMID: 38286185 PMCID: PMC10923159 DOI: 10.1016/j.ydbio.2024.01.011] [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: 07/29/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 01/31/2024]
Abstract
Despite extensive studies on endogenous heart regeneration within the past 20 years, the players involved in initiating early regeneration events are far from clear. Here, we assessed the function of neutrophils, the first-responder cells to tissue damage, during zebrafish heart regeneration. We detected rapid neutrophil mobilization to the injury site after ventricular amputation, peaking at 1-day post-amputation (dpa) and resolving by 3 dpa. Further analyses indicated neutrophil mobilization coincides with peak epicardial cell proliferation, and recruited neutrophils associated with activated, expanding epicardial cells at 1 dpa. Neutrophil depletion inhibited myocardial regeneration and significantly reduced epicardial cell expansion, proliferation, and activation. To explore the molecular mechanism of neutrophils on the epicardial regenerative response, we performed scRNA-seq analysis of 1 dpa neutrophils and identified enrichment of the FGF and MAPK/ERK signaling pathways. Pharmacological inhibition of FGF signaling indicated its' requirement for epicardial expansion, while neutrophil depletion blocked MAPK/ERK signaling activation in epicardial cells. Ligand-receptor analysis indicated the EGF ligand, hbegfa, is released from neutrophils and synergizes with other FGF and MAPK/ERK factors for induction of epicardial regeneration. Altogether, our studies revealed that neutrophils quickly motivate epicardial cells, which later accumulate at the injury site and contribute to heart regeneration.
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Affiliation(s)
- Elizabeth A Peterson
- Division of Cardiology, School of Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Jisheng Sun
- Division of Cardiology, School of Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Xin Chen
- Division of Cardiology, School of Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Jinhu Wang
- Division of Cardiology, School of Medicine, Emory University, Atlanta, GA, 30322, USA.
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3
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Dong Y, Yang Y, Wang H, Feng D, Nist E, Yapundich N, Spurlock B, Craft M, Qian L, Liu J. Single-cell chromatin profiling reveals genetic programs activating proregenerative states in nonmyocyte cells. SCIENCE ADVANCES 2024; 10:eadk4694. [PMID: 38381829 PMCID: PMC10881044 DOI: 10.1126/sciadv.adk4694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/18/2024] [Indexed: 02/23/2024]
Abstract
Cardiac regeneration requires coordinated participation of multiple cell types whereby their communications result in transient activation of proregenerative cell states. Although the molecular characteristics and lineage origins of these activated cell states and their contribution to cardiac regeneration have been studied, the extracellular signaling and the intrinsic genetic program underlying the activation of the transient functional cell states remain largely unexplored. In this study, we delineated the chromatin landscapes of the noncardiomyocytes (nonCMs) of the regenerating heart at the single-cell level and inferred the cis-regulatory architectures and trans-acting factors that control cell type-specific gene expression programs. Moreover, further motif analysis and cell-specific genetic manipulations suggest that the macrophage-derived inflammatory signal tumor necrosis factor-α, acting via its downstream transcription factor complex activator protein-1, functions cooperatively with discrete transcription regulators to activate respective nonCM cell types critical for cardiac regeneration. Thus, our study defines the regulatory architectures and intercellular communication principles in zebrafish heart regeneration.
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Affiliation(s)
- Yanhan Dong
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Yuchen Yang
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Haofei Wang
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Dong Feng
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Elizabeth Nist
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Nicholas Yapundich
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Brian Spurlock
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Madison Craft
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Li Qian
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Jiandong Liu
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
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Shin K, Begeman IJ, Cao J, Kang J. leptin b and its regeneration enhancer illustrate the regenerative features of zebrafish hearts. Dev Dyn 2024; 253:91-106. [PMID: 36495292 PMCID: PMC10256838 DOI: 10.1002/dvdy.556] [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: 07/14/2022] [Revised: 11/11/2022] [Accepted: 11/29/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Zebrafish possess a remarkable regenerative capacity, which is mediated by the induction of various genes upon injury. Injury-dependent transcription is governed by the tissue regeneration enhancer elements (TREEs). Here, we utilized leptin b (lepb), an injury-specific factor, and its TREE to dissect heterogeneity of noncardiomyocytes (CMs) in regenerating hearts. RESULTS Our single-cell RNA sequencing (scRNA-seq) analysis demonstrated that the endothelium/endocardium(EC) is activated to induce distinct subpopulations upon injury. We demonstrated that lepb can be utilized as a regeneration-specific marker to subset injury-activated ECs. lepb+ ECs robustly induce pro-regenerative factors, implicating lepb+ ECs as a signaling center to interact with other cardiac cells. Our scRNA-seq analysis identified that lepb is also produced by subpopulation of epicardium (Epi) and epicardium-derived cells (EPDCs). To determine whether lepb labels injury-emerging non-CM cells, we tested the activity of lepb-linked regeneration enhancer (LEN) with chromatin accessibility profiles and transgenic lines. While nondetectable in uninjured hearts, LEN directs EC and Epi/EPDC expression upon injury. The endogenous LEN activity was assessed using LEN deletion lines, demonstrating that LEN deletion abolished injury-dependent expression of lepb, but not other nearby genes. CONCLUSIONS Our integrative analyses identify regeneration-emerging cell-types and factors, leading to the discovery of regenerative features of hearts.
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Affiliation(s)
- Kwangdeok Shin
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin – Madison, Madison, WI, 53705, USA
| | - Ian J. Begeman
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin – Madison, Madison, WI, 53705, USA
| | - Jingli Cao
- Cardiovascular Research Institute, Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10021, USA
| | - Junsu Kang
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin – Madison, Madison, WI, 53705, USA
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Bobrovskikh AV, Zubairova US, Doroshkov AV. Fishing Innate Immune System Properties through the Transcriptomic Single-Cell Data of Teleostei. BIOLOGY 2023; 12:1516. [PMID: 38132342 PMCID: PMC10740722 DOI: 10.3390/biology12121516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023]
Abstract
The innate immune system is the first line of defense in multicellular organisms. Danio rerio is widely considered a promising model for IIS-related research, with the most amount of scRNAseq data available among Teleostei. We summarized the scRNAseq and spatial transcriptomics experiments related to the IIS for zebrafish and other Teleostei from the GEO NCBI and the Single-Cell Expression Atlas. We found a considerable number of scRNAseq experiments at different stages of zebrafish development in organs such as the kidney, liver, stomach, heart, and brain. These datasets could be further used to conduct large-scale meta-analyses and to compare the IIS of zebrafish with the mammalian one. However, only a small number of scRNAseq datasets are available for other fish (turbot, salmon, cavefish, and dark sleeper). Since fish biology is very diverse, it would be a major mistake to use zebrafish alone in fish immunology studies. In particular, there is a special need for new scRNAseq experiments involving nonmodel Teleostei, e.g., long-lived species, cancer-resistant fish, and various fish ecotypes.
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Affiliation(s)
- Aleksandr V. Bobrovskikh
- Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (U.S.Z.); (A.V.D.)
| | - Ulyana S. Zubairova
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (U.S.Z.); (A.V.D.)
- Department of Information Technologies, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Alexey V. Doroshkov
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (U.S.Z.); (A.V.D.)
- Department of Genomics and Bioinformatics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 660036 Krasnoyarsk, Russia
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Lu M, Hayat R, Zhang X, Jiao Y, Huang J, Huangfu Y, Jiang M, Fu J, Jiang Q, Gu Y, Wang S, Akerberg AA, Su Y, Zhao L. Comparative analysis of the cardiac structure and transcriptome of scallop and snail, perspectives on heart chamber evolution. MARINE LIFE SCIENCE & TECHNOLOGY 2023; 5:478-491. [PMID: 38045548 PMCID: PMC10689705 DOI: 10.1007/s42995-023-00202-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 10/24/2023] [Indexed: 12/05/2023]
Abstract
The evolution of a two-chambered heart, with an atrium and a ventricle, has improved heart function in both deuterostomes (vertebrates) and some protostomes (invertebrates). Although studies have examined the unique structure and function of these two chambers, molecular comparisons are few and limited to vertebrates. Here, we focus on the two-chambered protostome heart of the mollusks, offering data that may provide a better understanding of heart evolution. Specifically, we asked if the atrium and ventricle differ at the molecular level in the mollusk heart. To do so, we examined two very different species, the giant African land snail (Lissachatina fulica) and the relatively small, aquatic yesso scallop (Mizuhopecten yessoensis), with the assumption that if they exhibited commonality these similarities would likely reflect those across the phylum. We found that, although the hearts of these two species differed histologically, their cardiac gene function enrichments were similar, as revealed by transcriptomic analysis. Furthermore, the atrium and ventricle in each species had distinct gene function clusters, suggesting an evolutionary differentiation of cardiac chambers in mollusks. Finally, to explore the relationship between vertebrate and invertebrate two-chambered hearts, we compared our transcriptomic data with published data from the zebrafish, a well-studied vertebrate model with a two-chambered heart. Our analysis indicated a functional similarity of ventricular genes between the mollusks and the zebrafish, suggesting that the ventricle was differentiated to achieve the same functions in invertebrates and vertebrates. As the first such study on protostomes, our findings offered initial insights into how the two-chambered heart arose, including a possible understanding of its occurrence in both protostomes and deuterostomes. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-023-00202-0.
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Affiliation(s)
- Meina Lu
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education) and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Rabia Hayat
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education) and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Xuejiao Zhang
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education) and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Yaqi Jiao
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education) and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Jianyun Huang
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Yifan Huangfu
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Mingcan Jiang
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Jieyi Fu
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Qingqiu Jiang
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Yaojia Gu
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
| | - Shi Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
- Fang Zongxi Centre for Marine EvoDevo and MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Alexander A. Akerberg
- Division of Basic and Translational Cardiovascular Research, Department of Cardiology, Boston Children’s Hospital, Boston, MA 02115 USA
- Harvard Medical School, Boston, MA 02115 USA
| | - Ying Su
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education) and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Long Zhao
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education) and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
- College of Fisheries, Ocean University of China, Qingdao, 266003 China
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Wei KH, Lin IT, Chowdhury K, Lim KL, Liu KT, Ko TM, Chang YM, Yang KC, Lai SL(B. Comparative single-cell profiling reveals distinct cardiac resident macrophages essential for zebrafish heart regeneration. eLife 2023; 12:e84679. [PMID: 37498060 PMCID: PMC10411971 DOI: 10.7554/elife.84679] [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: 11/22/2022] [Accepted: 07/26/2023] [Indexed: 07/28/2023] Open
Abstract
Zebrafish exhibit a robust ability to regenerate their hearts following injury, and the immune system plays a key role in this process. We previously showed that delaying macrophage recruitment by clodronate liposome (-1d_CL, macrophage-delayed model) impairs neutrophil resolution and heart regeneration, even when the infiltrating macrophage number was restored within the first week post injury (Lai et al., 2017). It is thus intriguing to learn the regenerative macrophage property by comparing these late macrophages vs. control macrophages during cardiac repair. Here, we further investigate the mechanistic insights of heart regeneration by comparing the non-regenerative macrophage-delayed model with regenerative controls. Temporal RNAseq analyses revealed that -1d_CL treatment led to disrupted inflammatory resolution, reactive oxygen species homeostasis, and energy metabolism during cardiac repair. Comparative single-cell RNAseq profiling of inflammatory cells from regenerative vs. non-regenerative hearts further identified heterogeneous macrophages and neutrophils, showing alternative activation and cellular crosstalk leading to neutrophil retention and chronic inflammation. Among macrophages, two residential subpopulations (hbaa+ Mac and timp4.3+ Mac 3) were enriched only in regenerative hearts and barely recovered after +1d_CL treatment. To deplete the resident macrophage without delaying the circulating macrophage recruitment, we established the resident macrophage-deficient model by administrating CL earlier at 8 d (-8d_CL) before cryoinjury. Strikingly, resident macrophage-deficient zebrafish still exhibited defects in revascularization, cardiomyocyte survival, debris clearance, and extracellular matrix remodeling/scar resolution without functional compensation from the circulating/monocyte-derived macrophages. Our results characterized the diverse function and interaction between inflammatory cells and identified unique resident macrophages prerequisite for zebrafish heart regeneration.
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Affiliation(s)
- Ke-Hsuan Wei
- Graduate Institute of Life Sciences, National Defense Medical CenterTaipeiTaiwan
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
| | - I-Ting Lin
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
| | - Kaushik Chowdhury
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung UniversityTaipeiTaiwan
| | - Khai Lone Lim
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung UniversityTaipeiTaiwan
| | - Kuan-Ting Liu
- Department of Biological Science & Technology, National Yang Ming Chiao Tung UniversityTaipeiTaiwan
| | - Tai-Ming Ko
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
- Department of Biological Science & Technology, National Yang Ming Chiao Tung UniversityTaipeiTaiwan
| | - Yao-Ming Chang
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
| | - Kai-Chien Yang
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
- Department and Graduate Institute of Pharmacology, National Taiwan University College of MedicineTaipeiTaiwan
| | - Shih-Lei (Ben) Lai
- Graduate Institute of Life Sciences, National Defense Medical CenterTaipeiTaiwan
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung UniversityTaipeiTaiwan
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Murine neonatal cardiac B cells promote cardiomyocyte proliferation and heart regeneration. NPJ Regen Med 2023; 8:7. [PMID: 36774363 PMCID: PMC9922252 DOI: 10.1038/s41536-023-00282-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 01/25/2023] [Indexed: 02/13/2023] Open
Abstract
The irreversible loss of cardiomyocytes in the adult heart following cardiac injury leads to adverse cardiac remodeling and ventricular dysfunction. However, the role of B cells in cardiomyocyte proliferation and heart regeneration has not been clarified. Here, we found that the neonatal mice with B cell depletion showed markedly reduced cardiomyocyte proliferation, leading to cardiac dysfunction, fibrosis scar formation, and the complete failure of heart regeneration after apical resection. B cell depletion also significantly impaired heart regeneration and cardiac function in neonatal mice following myocardial infarction (MI). However, B cell depletion in adult mice suppressed tissue inflammation, inhibited myocardial fibrosis, and improved cardiac function after MI. Interestingly, B cell depletion partially restricted cardiomyocyte proliferation in adult mice post-MI. Single-cell RNA sequencing showed that cardiac B cells possessed a more powerful ability to inhibit inflammatory responses and enhance angiogenesis in the postnatal day 1 (P1) mice compared with P7 and adult mice. Besides, the proportion of cardioprotective B cell clusters with high expression levels of S100a6 (S100 calcium-binding protein A6) and S100a4 (S100 calcium-binding protein A4) was greatly decreased in adult heart tissues compared with neonatal mice after cardiac damage. Thus, our study discovers that cardiac B cells in neonatal mice are required for cardiomyocyte proliferation and heart regeneration, while adult B cells promote inflammation and impair cardiac function after myocardial injury.
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Neonatal Plasma Exosomes Contribute to Endothelial Cell-Mediated Angiogenesis and Cardiac Repair after Acute Myocardial Infarction. Int J Mol Sci 2023; 24:ijms24043196. [PMID: 36834610 PMCID: PMC9959818 DOI: 10.3390/ijms24043196] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
Acute myocardial infarction (AMI) accompanied by cardiac remodeling still lacks effective treatment to date. Accumulated evidences suggest that exosomes from various sources play a cardioprotective and regenerative role in heart repair, but their effects and mechanisms remain intricate. Here, we found that intramyocardial delivery of plasma exosomes from neonatal mice (npEXO) could help to repair the adult heart in structure and function after AMI. In-depth proteome and single-cell transcriptome analyses suggested that npEXO ligands were majorly received by cardiac endothelial cells (ECs), and npEXO-mediated angiogenesis might serve as a pivotal reason to ameliorate the infarcted adult heart. We then innovatively constructed systematical communication networks among exosomal ligands and cardiac ECs and the final 48 ligand-receptor pairs contained 28 npEXO ligands (including the angiogenic factors, Clu and Hspg2), which mainly mediated the pro-angiogenic effect of npEXO by recognizing five cardiac EC receptors (Kdr, Scarb1, Cd36, etc.). Together, the proposed ligand-receptor network in our study might provide inspiration for rebuilding the vascular network and cardiac regeneration post-MI.
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10
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Xia Y, Duca S, Perder B, Dündar F, Zumbo P, Qiu M, Yao J, Cao Y, Harrison MRM, Zangi L, Betel D, Cao J. Activation of a transient progenitor state in the epicardium is required for zebrafish heart regeneration. Nat Commun 2022; 13:7704. [PMID: 36513650 PMCID: PMC9747719 DOI: 10.1038/s41467-022-35433-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 12/02/2022] [Indexed: 12/15/2022] Open
Abstract
The epicardium, a mesothelial cell tissue that encompasses vertebrate hearts, supports heart regeneration after injury through paracrine effects and as a source of multipotent progenitors. However, the progenitor state in the adult epicardium has yet to be defined. Through single-cell RNA-sequencing of isolated epicardial cells from uninjured and regenerating adult zebrafish hearts, we define the epithelial and mesenchymal subsets of the epicardium. We further identify a transiently activated epicardial progenitor cell (aEPC) subpopulation marked by ptx3a and col12a1b expression. Upon cardiac injury, aEPCs emerge from the epithelial epicardium, migrate to enclose the wound, undergo epithelial-mesenchymal transition (EMT), and differentiate into mural cells and pdgfra+hapln1a+ mesenchymal epicardial cells. These EMT and differentiation processes are regulated by the Tgfβ pathway. Conditional ablation of aEPCs blocks heart regeneration through reduced nrg1 expression and mesenchymal cell number. Our findings identify a transient progenitor population of the adult epicardium that is indispensable for heart regeneration and highlight it as a potential target for enhancing cardiac repair.
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Affiliation(s)
- Yu Xia
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Sierra Duca
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Björn Perder
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Friederike Dündar
- Department of Physiology and Biophysics, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Applied Bioinformatics Core, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Paul Zumbo
- Department of Physiology and Biophysics, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Applied Bioinformatics Core, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Miaoyan Qiu
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Jun Yao
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Yingxi Cao
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Michael R M Harrison
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Lior Zangi
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Doron Betel
- Applied Bioinformatics Core, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Institute for Computational Biomedicine, Department of Medicine, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Jingli Cao
- Cardiovascular Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA.
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA.
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An interplay between cellular growth and atypical fusion defines morphogenesis of a modular glial niche in Drosophila. Nat Commun 2022; 13:4999. [PMID: 36008397 PMCID: PMC9411534 DOI: 10.1038/s41467-022-32685-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
Neural stem cells (NSCs) live in an intricate cellular microenvironment supporting their activity, the niche. Whilst shape and function are inseparable, the morphogenetic aspects of niche development are poorly understood. Here, we use the formation of a glial niche to investigate acquisition of architectural complexity. Cortex glia (CG) in Drosophila regulate neurogenesis and build a reticular structure around NSCs. We first show that individual CG cells grow tremendously to ensheath several NSC lineages, employing elaborate proliferative mechanisms which convert these cells into syncytia rich in cytoplasmic bridges. CG syncytia further undergo homotypic cell–cell fusion, using defined cell surface receptors and actin regulators. Cellular exchange is however dynamic in space and time. This atypical cell fusion remodels cellular borders, restructuring the CG syncytia. Ultimately, combined growth and fusion builds the multi-level architecture of the niche, and creates a modular, spatial partition of the NSC population. Our findings provide insights into how a niche forms and organises while developing intimate contacts with a stem cell population. Little is known of how the architectural complexity of the neural stem cell niche is achieved. Rujano et al. show that the morphogenesis of a glial niche in Drosophila involves complex proliferative strategies and atypical cell–cell fusion.
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12
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Hu B, Lelek S, Spanjaard B, El-Sammak H, Simões MG, Mintcheva J, Aliee H, Schäfer R, Meyer AM, Theis F, Stainier DYR, Panáková D, Junker JP. Origin and function of activated fibroblast states during zebrafish heart regeneration. Nat Genet 2022; 54:1227-1237. [PMID: 35864193 PMCID: PMC7613248 DOI: 10.1038/s41588-022-01129-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 06/09/2022] [Indexed: 12/12/2022]
Abstract
The adult zebrafish heart has a high capacity for regeneration following injury. However, the composition of the regenerative niche has remained largely elusive. Here, we dissected the diversity of activated cell states in the regenerating zebrafish heart based on single-cell transcriptomics and spatiotemporal analysis. We observed the emergence of several transient cell states with fibroblast characteristics following injury, and we outlined the proregenerative function of collagen-12-expressing fibroblasts. To understand the cascade of events leading to heart regeneration, we determined the origin of these cell states by high-throughput lineage tracing. We found that activated fibroblasts were derived from two separate sources: the epicardium and the endocardium. Mechanistically, we determined Wnt signalling as a regulator of the endocardial fibroblast response. In summary, our work identifies specialized activated fibroblast cell states that contribute to heart regeneration, thereby opening up possible approaches to modulating the regenerative capacity of the vertebrate heart. Single-cell RNA sequencing and spatiotemporal analysis of the regenerating zebrafish heart identify transient proregenerative fibroblast-like cells that are derived from the epicardium and the endocardium. Wnt signalling regulates the endocardial fibroblast response.
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Affiliation(s)
- Bo Hu
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany
| | - Sara Lelek
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research) partner site, Berlin, Germany
| | - Bastiaan Spanjaard
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany
| | - Hadil El-Sammak
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,DZHK (German Centre for Cardiovascular Research) partner site Rhine/Main, Frankfurt, Germany
| | - Mariana Guedes Simões
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Janita Mintcheva
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany
| | - Hananeh Aliee
- Helmholtz Center Munich - German Research Center for Environmental Health, Institute of Computational Biology, Neuherberg, Munich, Germany
| | - Ronny Schäfer
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany
| | - Alexander M Meyer
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Fabian Theis
- Helmholtz Center Munich - German Research Center for Environmental Health, Institute of Computational Biology, Neuherberg, Munich, Germany
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,DZHK (German Centre for Cardiovascular Research) partner site Rhine/Main, Frankfurt, Germany
| | - Daniela Panáková
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany. .,DZHK (German Centre for Cardiovascular Research) partner site, Berlin, Germany.
| | - Jan Philipp Junker
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany. .,DZHK (German Centre for Cardiovascular Research) partner site, Berlin, Germany.
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13
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Capon SJ, Uribe V, Dominado N, Ehrlich O, Smith KA. Endocardial identity is established during early somitogenesis by Bmp signalling acting upstream of npas4l and etv2. Development 2022; 149:275317. [PMID: 35531980 PMCID: PMC9148566 DOI: 10.1242/dev.190421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 03/28/2022] [Indexed: 12/28/2022]
Abstract
The endocardium plays important roles in the development and function of the vertebrate heart; however, few molecular markers of this tissue have been identified and little is known about what regulates its differentiation. Here, we describe the Gt(SAGFF27C); Tg(4xUAS:egfp) line as a marker of endocardial development in zebrafish. Transcriptomic comparison between endocardium and pan-endothelium confirms molecular distinction between these populations and time-course analysis suggests differentiation as early as eight somites. To investigate what regulates endocardial identity, we employed npas4l, etv2 and scl loss-of-function models. Endocardial expression is lost in npas4l mutants, significantly reduced in etv2 mutants and only modestly affected upon scl loss-of-function. Bmp signalling was also examined: overactivation of Bmp signalling increased endocardial expression, whereas Bmp inhibition decreased expression. Finally, epistasis experiments showed that overactivation of Bmp signalling was incapable of restoring endocardial expression in etv2 mutants. By contrast, overexpression of either npas4l or etv2 was sufficient to rescue endocardial expression upon Bmp inhibition. Together, these results describe the differentiation of the endocardium, distinct from vasculature, and place npas4l and etv2 downstream of Bmp signalling in regulating its differentiation. Summary: A zebrafish transgenic reporter of the endocardium is identified, permitting transcriptomic analysis and identification of new endocardial markers. Epistasis experiments demonstrate npas4l and etv2 act downstream of Bmp signalling to regulate endocardial differentiation.
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Affiliation(s)
- Samuel J Capon
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Veronica Uribe
- Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Nicole Dominado
- Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Ophelia Ehrlich
- Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Kelly A Smith
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia.,Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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14
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Ma H, Liu Z, Yang Y, Feng D, Dong Y, Garbutt TA, Hu Z, Wang L, Luan C, Cooper CD, Li Y, Welch JD, Qian L, Liu J. Functional coordination of non-myocytes plays a key role in adult zebrafish heart regeneration. EMBO Rep 2021; 22:e52901. [PMID: 34523214 DOI: 10.15252/embr.202152901] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 07/07/2021] [Accepted: 08/13/2021] [Indexed: 12/24/2022] Open
Abstract
Cardiac regeneration occurs primarily through proliferation of existing cardiomyocytes, but also involves complex interactions between distinct cardiac cell types including non-cardiomyocytes (non-CMs). However, the subpopulations, distinguishing molecular features, cellular functions, and intercellular interactions of non-CMs in heart regeneration remain largely unexplored. Using the LIGER algorithm, we assemble an atlas of cell states from 61,977 individual non-CM scRNA-seq profiles isolated at multiple time points during regeneration. This analysis reveals extensive non-CM cell diversity, including multiple macrophage (MC), fibroblast (FB), and endothelial cell (EC) subpopulations with unique spatiotemporal distributions, and suggests an important role for MC in inducing the activated FB and EC subpopulations. Indeed, pharmacological perturbation of MC function compromises the induction of the unique FB and EC subpopulations. Furthermore, we developed computational algorithm Topologizer to map the topological relationships and dynamic transitions between functional states. We uncover dynamic transitions between MC functional states and identify factors involved in mRNA processing and transcriptional regulation associated with the transition. Together, our single-cell transcriptomic analysis of non-CMs during cardiac regeneration provides a blueprint for interrogating the molecular and cellular basis of this process.
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Affiliation(s)
- Hong Ma
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Ziqing Liu
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Yuchen Yang
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA.,Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
| | - Dong Feng
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Yanhan Dong
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Tiffany A Garbutt
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Zhiyuan Hu
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - Li Wang
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Changfei Luan
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Cynthia D Cooper
- School of Molecular Biosciences, Washington State University Vancouver, Vancouver, WA, USA
| | - Yun Li
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA.,Department of Biostatistics, University of North Carolina, Chapel Hill, NC, USA.,Department of Computer Science, University of North Carolina, Chapel Hill, NC, USA
| | - Joshua D Welch
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA
| | - Li Qian
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Jiandong Liu
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
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