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Acharya P, Parkins S, Tranter M. RNA binding proteins as mediators of pathological cardiac remodeling. Front Cell Dev Biol 2024; 12:1368097. [PMID: 38818408 PMCID: PMC11137256 DOI: 10.3389/fcell.2024.1368097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 05/01/2024] [Indexed: 06/01/2024] Open
Abstract
RNA binding proteins (RBPs) play a central in the post-transcriptional regulation of gene expression, which can account for up to 50% of all variations in protein expression within a cell. Following their binding to target RNAs, RBPs most typically confer changes in gene expression through modulation of alternative spicing, RNA stabilization/degradation, or ribosome loading/translation rate. All of these post-transcriptional regulatory processes have been shown to play a functional role in pathological cardiac remodeling, and a growing body of evidence is beginning to identify the mechanistic contribution of individual RBPs and their cardiac RNA targets. This review highlights the mechanisms of RBP-dependent post-transcriptional gene regulation in cardiomyocytes and fibroblasts and our current understanding of how RNA binding proteins functionally contribute to pathological cardiac remodeling.
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Affiliation(s)
- Pooja Acharya
- Department of Molecular Medicine and Therapeutics, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Sharon Parkins
- Department of Molecular Medicine and Therapeutics, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Michael Tranter
- Department of Molecular Medicine and Therapeutics, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
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Klak M, Rachalewski M, Filip A, Dobrzański T, Berman A, Wszoła M. Bioprinting of Perfusable, Biocompatible Vessel-like Channels with dECM-Based Bioinks and Living Cells. Bioengineering (Basel) 2024; 11:439. [PMID: 38790306 PMCID: PMC11117567 DOI: 10.3390/bioengineering11050439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/14/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
There is a growing interest in the production of bioinks that on the one hand, are biocompatible and, on the other hand, have mechanical properties that allow for the production of stable constructs that can survive for a long time after transplantation. While the selection of the right material is crucial for bioprinting, there is another equally important issue that is currently being extensively researched-the incorporation of the vascular system into the fabricated scaffolds. Therefore, in the following manuscript, we present the results of research on bioink with unique physico-chemical and biological properties. In this article, two methods of seeding cells were tested using bioink B and seeding after bioprinting the whole model. After 2, 5, 8, or 24 h of incubation, the flow medium was used in the tested systems. At the end of the experimental trial, for each time variant, the canals were stored in formaldehyde, and immunohistochemical staining was performed to examine the presence of cells on the canal walls and roof. Cells adhered to both ways of fiber arrangement; however, a parallel bioprint with the 5 h incubation and the intermediate plating of cells resulted in better adhesion efficiency. For this test variant, the percentage of cells that adhered was at least 20% higher than in the other analyzed variants. In addition, it was for this variant that the lowest percentage of viable cells was found that were washed out of the tested model. Importantly, hematoxylin and eosin staining showed that after 8 days of culture, the cells were evenly distributed throughout the canal roof. Our study clearly shows that neovascularization-promoting cells effectively adhere to ECM-based pancreatic bioink. Summarizing the presented results, it was demonstrated that the proposed bioink compositions can be used for bioprinting bionic organs with a vascular system formed by endothelial cells and fibroblasts.
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Affiliation(s)
- Marta Klak
- Foundation of Research and Science Development, 01-242 Warsaw, Poland or (M.W.)
- Polbionica sp. z o.o., 01-242 Warsaw, Poland
| | - Michał Rachalewski
- Foundation of Research and Science Development, 01-242 Warsaw, Poland or (M.W.)
| | - Anna Filip
- Foundation of Research and Science Development, 01-242 Warsaw, Poland or (M.W.)
| | | | | | - Michał Wszoła
- Foundation of Research and Science Development, 01-242 Warsaw, Poland or (M.W.)
- Polbionica sp. z o.o., 01-242 Warsaw, Poland
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3
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Goldsmith R, Tsan YC, Scissors R, Helms A, Brody M. In Vitro Assessment of Cardiac Fibroblast Activation at Physiologic Stiffness. Curr Protoc 2024; 4:e1025. [PMID: 38600839 PMCID: PMC11013569 DOI: 10.1002/cpz1.1025] [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] [Indexed: 04/12/2024]
Abstract
Cardiac fibroblasts (CF) are an essential cell type in cardiac physiology, playing diverse roles in maintaining structural integrity, extracellular matrix (ECM) synthesis, and tissue repair. Under normal conditions, these cells reside in the interstitium in a quiescent state poised to sense and respond to injury by synthesizing and secreting collagen, vimentin, hyaluronan, and other ECM components. In response to mechanical and chemical stimuli, these "resident" fibroblasts can undergo a transformation through a continuum of activation states into what is commonly known as a "myofibroblast," in a process critical for injury response. Despite progress in understanding the contribution of fibroblasts to cardiac health and disease, much remains unknown about the signaling mediating this activation, in part owing to technical challenges in evaluating CF function and activation status in vitro. Given their role in monitoring the ECM, CFs are acutely sensitive to stiffness and pressure. High basal activation of isolated CFs is common due to the super-physiologic stiffness of traditional cell culture substrates, making assays dependent on quiescent cells challenging. To overcome this problem, cell culture parameters must be tightly controlled, and the use of dishes coated with biocompatible reduced-stiffness substrates, such as 8-kPa polydimethylsiloxane (PDMS), has shown promise in reducing basal activation of fibroblasts. Here, we describe cell culture protocol for maintaining CF quiescence in vitro to enable a dynamic range for the assessment of activation status in response to fibrogenic stimuli using PDMS-coated coverslips. Our protocol provides a cost-effective tool to study fibroblast signaling and activity, allowing researchers to better understand the underlying mechanisms involved in cardiac fibrosis. © 2024 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Generation of 8-kPa polydimethylsiloxane (PDMS)/gelatin-coated coverslips for cardiac fibroblast cell culture Basic Protocol 2: Isolation of adult cardiac fibroblasts and plating onto PDMS coverslips Basic Protocol 3: Assessment of cardiac fibroblast activation by α smooth muscle actin (αSMA) immunocytochemistry.
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Affiliation(s)
- R.S. Goldsmith
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan, United States
| | - Y-C Tsan
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States
| | - R.E. Scissors
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan, United States
| | - A.S. Helms
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States
| | - M.J. Brody
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan, United States
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States
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Xie J, Lin H, Zuo A, Shao J, Sun W, Wang S, Song J, Yao W, Luo Y, Sun J, Wang M. The JMJD family of histone demethylase and their intimate links to cardiovascular disease. Cell Signal 2024; 116:111046. [PMID: 38242266 DOI: 10.1016/j.cellsig.2024.111046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
The incidence rate and mortality rate of cardiovascular disease rank first in the world. It is associated with various high-risk factors, and there is no single cause. Epigenetic modifications, such as DNA methylation or histone modification, actively participate in the initiation and development of cardiovascular diseases. Histone lysine methylation is a type of histone post-translational modification. The human Jumonji C domain (JMJD) protein family consists of more than 30 members. JMJD proteins participate in many key nuclear processes and play a key role in the specific regulation of gene expression, DNA damage and repair, and DNA replication. Importantly, increasing evidence shows that JMJD proteins are abnormally expressed in cardiovascular diseases, which may be a potential mechanism for the occurrence and development of these diseases. Here, we discuss the key roles of JMJD proteins in various common cardiovascular diseases. This includes histone lysine demethylase, which has been studied in depth, and less-studied JMJD members. Furthermore, we focus on the epigenetic changes induced by each JMJD member, summarize recent research progress, and evaluate their relationship with cardiovascular diseases and therapeutic potential.
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Affiliation(s)
- Jiarun Xie
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Haoyu Lin
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Anna Zuo
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Junqiao Shao
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Wei Sun
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Shaoting Wang
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jianda Song
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Wang Yao
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Yanyu Luo
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jia Sun
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China.
| | - Ming Wang
- Department of Traditional Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China.
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Schulz MC, Kopf M, Gekle M. Crosstalk with renal proximal tubule cells drives acidosis-induced inflammatory response and dedifferentiation of fibroblasts via p38-singaling. Cell Commun Signal 2024; 22:148. [PMID: 38395872 PMCID: PMC10893741 DOI: 10.1186/s12964-024-01527-8] [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: 11/13/2023] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Tubulointerstitial kidney disease associated microenvironmental dysregulation, like acidification, inflammation and fibrosis, affects tubule cells and fibroblasts. Micromilieu homeostasis influences intracellular signaling and intercellular crosstalk. Cell-cell communication in turn modulates the interstitial microenvironment. We assessed the impact of acidosis on inflammatory and fibrotic responses in proximal tubule cells and fibroblasts as a function of cellular crosstalk. Furthermore, cellular signaling pathways involved were identified. METHODS HK-2 (human proximal tubule) and CCD-1092Sk (human fibroblasts), in mono and coculture, were exposed to acidic or control media for 3 or 48 h. Protein expression of inflammation markers (TNF, TGF-ß and COX-2), dedifferentiation markers (N-cadherin, vinculin, ß-catenin and vimentin), fibrosis markers (collagen III and fibronectin) and phospho- as well as total MAPK levels were determined by western blot. Secreted collagen III and fibronectin were measured by ELISA. The impact of MAPK activation was assessed by pharmacological intervention. In addition, necrosis, apoptosis and epithelial permeability were determined. RESULTS Independent of culture conditions, acidosis caused a decrease of COX-2, vimentin and fibronectin expression in proximal tubule cells. Only in monoculture, ß-Catenin expression decreased and collagen III expression increased in tubule cells during acidosis. By contrast, in coculture collagen III protein expression of tubule cells was reduced. In fibroblasts acidosis led to an increase of TNF, COX-2, vimentin, vinculin, N-cadherin protein expression and a decrease of TGF-ß expression exclusively in coculture. In monoculture, expression of COX-2 and fibronectin was reduced. Collagen III expression of fibroblasts was reduced by acidosis independent of culture conditions. In coculture, acidosis enhanced phosphorylation of ERK1/2, JNK1/2 and p38 transiently in proximal tubule cells. In fibroblasts, acidosis enhanced phosphorylation of p38 in a sustained and very strong manner. ERK1/2 and JNK1/2 were not affected in fibroblasts. Inhibition of JNK1/2 and p38 under coculture conditions reduced acidosis-induced changes in fibroblasts significantly. CONCLUSIONS Our data show that the crosstalk between proximal tubule cells and fibroblasts is crucial for acidosis-induced dedifferentiation of fibroblasts into an inflammatory phenotype. This dedifferentiation is at least in part mediated by p38 and JNK1/2. Thus, cell-cell communication is essential for the pathophysiological impact of tubulointerstitial acidosis.
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Affiliation(s)
- Marie-Christin Schulz
- Julius Bernstein Institute of Physiology, Magdeburger Straße 6, 06112, Halle (Saale), Germany.
| | - Michael Kopf
- Julius Bernstein Institute of Physiology, Magdeburger Straße 6, 06112, Halle (Saale), Germany
| | - Michael Gekle
- Julius Bernstein Institute of Physiology, Magdeburger Straße 6, 06112, Halle (Saale), Germany
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Zuo W, Sun R, Ji Z, Ma G. Macrophage-driven cardiac inflammation and healing: insights from homeostasis and myocardial infarction. Cell Mol Biol Lett 2023; 28:81. [PMID: 37858035 PMCID: PMC10585879 DOI: 10.1186/s11658-023-00491-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/19/2023] [Indexed: 10/21/2023] Open
Abstract
Early and prompt reperfusion therapy has markedly improved the survival rates among patients enduring myocardial infarction (MI). Nonetheless, the resulting adverse remodeling and the subsequent onset of heart failure remain formidable clinical management challenges and represent a primary cause of disability in MI patients worldwide. Macrophages play a crucial role in immune system regulation and wield a profound influence over the inflammatory repair process following MI, thereby dictating the degree of myocardial injury and the subsequent pathological remodeling. Despite numerous previous biological studies that established the classical polarization model for macrophages, classifying them as either M1 pro-inflammatory or M2 pro-reparative macrophages, this simplistic categorization falls short of meeting the precision medicine standards, hindering the translational advancement of clinical research. Recently, advances in single-cell sequencing technology have facilitated a more profound exploration of macrophage heterogeneity and plasticity, opening avenues for the development of targeted interventions to address macrophage-related factors in the aftermath of MI. In this review, we provide a summary of macrophage origins, tissue distribution, classification, and surface markers. Furthermore, we delve into the multifaceted roles of macrophages in maintaining cardiac homeostasis and regulating inflammation during the post-MI period.
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Affiliation(s)
- Wenjie Zuo
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao, Nanjing, 210009, China
| | - Renhua Sun
- Department of Cardiology, Yancheng No. 1 People's Hospital, No. 66 South Renmin Road, Yancheng, 224000, China
| | - Zhenjun Ji
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao, Nanjing, 210009, China
| | - Genshan Ma
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao, Nanjing, 210009, China.
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Hailiwu R, Zeng H, Zhan M, Pan T, Yang H, Li P. Salvianolic acid A diminishes LDHA-driven aerobic glycolysis to restrain myofibroblasts activation and cardiac fibrosis via blocking Akt/GSK-3β/HIF-1α axis. Phytother Res 2023; 37:4540-4556. [PMID: 37337901 DOI: 10.1002/ptr.7925] [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: 02/04/2023] [Revised: 05/11/2023] [Accepted: 06/02/2023] [Indexed: 06/21/2023]
Abstract
Myofibroblasts activation intensively contributes to cardiac fibrosis with undefined mechanism. Salvianolic acid A (SAA) is a phenolic component derived from Salvia miltiorrhiza with antifibrotic potency. This study aimed to interrogate the inhibitory effects and underlying mechanism of SAA on myofibroblasts activation and cardiac fibrosis. Antifibrotic effects of SAA were evaluated in mouse myocardial infarction (MI) model and in vitro myofibroblasts activation model. Metabolic regulatory effects and mechanism of SAA were determined using bioenergetic analysis and cross-validated by multiple metabolic inhibitors and siRNA or plasmid targeting Ldha. Finally, Akt/GSK-3β-related upstream regulatory mechanisms were investigated by immunoblot, q-PCR, and cross-validated by specific inhibitors. SAA inhibited cardiac fibroblasts-to-myofibroblasts transition, suppressed collage matrix proteins expression, and effectively attenuated MI-induced collagen deposition and cardiac fibrosis. SAA attenuated myofibroblasts activation and cardiac fibrosis by inhibiting LDHA-driven abnormal aerobic glycolysis. Mechanistically, SAA inhibited Akt/GSK-3β axis and downregulated HIF-1α expression by promoting its degradation via a noncanonical route, and therefore restrained HIF-1α-triggered Ldha gene expression. SAA is an effective component for treating cardiac fibrosis by diminishing LDHA-driven glycolysis during myofibroblasts activation. Targeting metabolism of myofibroblasts might occupy a potential therapeutic strategy for cardiac fibrosis.
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Affiliation(s)
- Renaguli Hailiwu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Hao Zeng
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Meiling Zhan
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Ting Pan
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Hua Yang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Ping Li
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
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Tsai CR, Kim J, Li X, Czarnewski P, Li R, Meng F, Zheng M, Zhao X, Steimle J, Grisanti F, Wang J, Samee MAH, Martin J. Hippo-deficient cardiac fibroblasts differentiate into osteochondroprogenitors. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.06.556593. [PMID: 38529510 PMCID: PMC10962739 DOI: 10.1101/2023.09.06.556593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Cardiac fibrosis, a common pathophysiology associated with various heart diseases, occurs from the excess deposition of extracellular matrix (ECM) 1 . Cardiac fibroblasts (CFs) are the primary cells that produce, degrade, and remodel ECM during homeostasis and tissue repair 2 . Upon injury, CFs gain plasticity to differentiate into myofibroblasts 3 and adipocyte-like 4,5 and osteoblast-like 6 cells, promoting fibrosis and impairing heart function 7 . How CFs maintain their cell state during homeostasis and adapt plasticity upon injury are not well defined. Recent studies have shown that Hippo signalling in CFs regulates cardiac fibrosis and inflammation 8-11 . Here, we used single-nucleus RNA sequencing (snRNA-seq) and spatially resolved transcriptomic profiling (ST) to investigate how the cell state was altered in the absence of Hippo signaling and how Hippo-deficient CFs interact with macrophages during cardiac fibrosis. We found that Hippo-deficient CFs differentiate into osteochondroprogenitors (OCPs), suggesting that Hippo restricts CF plasticity. Furthermore, Hippo-deficient CFs colocalized with macrophages, suggesting their intercellular communications. Indeed, we identified several ligand-receptor pairs between the Hippo-deficient CFs and macrophages. Blocking the Hippo-deficient CF-induced CSF1 signaling abolished macrophage expansion. Interestingly, blocking macrophage expansion also reduced OCP differentiation of Hippo-deficient CFs, indicating that macrophages promote CF plasticity.
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Zhang C, Hao H, Wang Y, Mu N, Jiang W, Zhang Z, Yin Y, Yu L, Chang ACY, Ma H. Intercellular mitochondrial component transfer triggers ischemic cardiac fibrosis. Sci Bull (Beijing) 2023; 68:1784-1799. [PMID: 37517989 DOI: 10.1016/j.scib.2023.07.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/15/2023] [Accepted: 06/30/2023] [Indexed: 08/01/2023]
Abstract
Myocardial fibrosis is the villain of sudden cardiac death. Myocardial ischemia/reperfusion (MI/R) injury induces cardiomyocyte damage or even death, which in turn stimulates fibroblast activation and fibrosis, but the intercellular communication mechanism remains unknown. Recent studies have shown that small extracellular vesicles (sEVs) significantly contribute to intercellular communication. Whether and how sEV might mediate post-MI/R cardiomyocyte/fibroblasts communication remain unknown. Here, in vivo and in vitro MI/R models were established. We demonstrate that sEVs derived from cardiomyocyte (Myo-sEVs) carry mitochondrial components, which enter fibroblasts to initiate myocardial fibrosis. Based on bioinformatics screening and experimental verification, the activating molecule in Beclin1-regulated autophagy protein 1 (autophagy/beclin-1 regulator 1, Ambra1) was found to be a critical component of these sEV and might be a new marker for Myo-sEVs. Interestingly, release of Ambra1+-Myo-sEVs was caused by secretory rather than canonical autophagy after MI/R injury and thereby escaped degradation. In ischemic and peripheral areas, Ambra1+-Myo-sEVs were internalized by fibroblasts, and the delivered mtDNA components to activate the fibroblast cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway to promote fibroblast activation and proliferation. In addition, our data show that Ambra1 is expressed on the EV surface and cardiac-specific Ambra1 down regulation inhibits the Ambra1+-Myo-sEVs release and fibroblast uptake, effectively inhibiting ischemic myocardial fibrosis. This finding newly provides the evidence that myocardial secretory autophagy plays a role in intercellular communication during cardiac fibrosis. Ambra1 is a newly characterized molecule with bioactivity and might be a marker for Myo-sEVs, providing new therapeutic targets for cardiac remodeling.
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Affiliation(s)
- Chan Zhang
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
| | - Hao Hao
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Yishi Wang
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Nan Mu
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Wenhua Jiang
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zihui Zhang
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
| | - Yue Yin
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Lu Yu
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Alex Chia Yu Chang
- Department of Cardiology and Shanghai Institute of Precision Medicine, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 211125, China.
| | - Heng Ma
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China.
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Majid A, Hassan FO, Hoque MM, Gbadegoye JO, Lebeche D. Bioactive Compounds and Cardiac Fibrosis: Current Insight and Future Prospect. J Cardiovasc Dev Dis 2023; 10:313. [PMID: 37504569 PMCID: PMC10380727 DOI: 10.3390/jcdd10070313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/14/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023] Open
Abstract
Cardiac fibrosis is a pathological condition characterized by excessive deposition of collagen and other extracellular matrix components in the heart. It is recognized as a major contributor to the development and progression of heart failure. Despite significant research efforts in characterizing and identifying key molecular mechanisms associated with myocardial fibrosis, effective treatment for this condition is still out of sight. In this regard, bioactive compounds have emerged as potential therapeutic antifibrotic agents due to their anti-inflammatory and antioxidant properties. These compounds exhibit the ability to modulate fibrogenic processes by inhibiting the production of extracellular matrix proteins involved in fibroblast to myofibroblast differentiation, or by promoting their breakdown. Extensive investigation of these bioactive compounds offers new possibilities for preventing or reducing cardiac fibrosis and its detrimental consequences. This comprehensive review aims to provide a thorough overview of the mechanisms underlying cardiac fibrosis, address the limitations of current treatment strategies, and specifically explore the potential of bioactive compounds as therapeutic interventions for the treatment and/or prevention of cardiac fibrosis.
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Affiliation(s)
- Abdul Majid
- Department of Physiology, College of Medicine, The University of Tennessee Health Science Center, Translational Research Building, Room 318H, 71 S. Manassas, Memphis, TN 38163, USA
- College of Graduate Health Sciences, The University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Fasilat Oluwakemi Hassan
- Department of Physiology, College of Medicine, The University of Tennessee Health Science Center, Translational Research Building, Room 318H, 71 S. Manassas, Memphis, TN 38163, USA
- College of Graduate Health Sciences, The University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Md Monirul Hoque
- Department of Physiology, College of Medicine, The University of Tennessee Health Science Center, Translational Research Building, Room 318H, 71 S. Manassas, Memphis, TN 38163, USA
- College of Graduate Health Sciences, The University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Joy Olaoluwa Gbadegoye
- Department of Physiology, College of Medicine, The University of Tennessee Health Science Center, Translational Research Building, Room 318H, 71 S. Manassas, Memphis, TN 38163, USA
- College of Graduate Health Sciences, The University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Djamel Lebeche
- Department of Physiology, College of Medicine, The University of Tennessee Health Science Center, Translational Research Building, Room 318H, 71 S. Manassas, Memphis, TN 38163, USA
- College of Graduate Health Sciences, The University of Tennessee Health Science Center, Memphis, TN 38163, USA
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Bretherton RC, Haack AJ, Kopyeva I, Rahman F, Kern JD, Bugg D, Theberge AB, Davis J, DeForest CA. User-Controlled 4D Biomaterial Degradation with Substrate-Selective Sortase Transpeptidases for Single-Cell Biology. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209904. [PMID: 36808641 PMCID: PMC10175157 DOI: 10.1002/adma.202209904] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 02/08/2023] [Indexed: 05/12/2023]
Abstract
Stimuli-responsive biomaterials show great promise for modeling disease dynamics ex vivo with spatiotemporal control over the cellular microenvironment. However, harvesting cells from such materials for downstream analysis without perturbing their state remains an outstanding challenge in 3/4-dimensional (3D/4D) culture and tissue engineering. In this manuscript, a fully enzymatic strategy for hydrogel degradation that affords spatiotemporal control over cell release while maintaining cytocompatibility is introduced. Exploiting engineered variants of the sortase transpeptidase evolved to recognize and selectively cleave distinct peptide sequences largely absent from the mammalian proteome, many limitations implicit to state-of-the-art methods to liberate cells from gels are sidestepped. It is demonstrated that evolved sortase exposure has minimal impact on the global transcriptome of primary mammalian cells and that proteolytic cleavage proceeds with high specificity; incorporation of substrate sequences within hydrogel crosslinkers permits rapid and selective cell recovery with high viability. In composite multimaterial hydrogels, it is shown that sequential degradation of hydrogel layers enables highly specific retrieval of single-cell suspensions for phenotypic analysis. It is expected that the high bioorthogonality and substrate selectivity of the evolved sortases will lead to their broad adoption as an enzymatic material dissociation cue and that their multiplexed use will enable newfound studies in 4D cell culture.
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Affiliation(s)
- Ross C Bretherton
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
- Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
- Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA
| | - Amanda J Haack
- Department of Chemistry, University of Washington, Seattle, WA, 98105, USA
| | - Irina Kopyeva
- Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Fariha Rahman
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
- Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Jonah D Kern
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
- Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Darrian Bugg
- Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA
- Department of Laboratory Medicine & Pathology, University of Washington, Seattle, WA, 98109, USA
| | | | - Jennifer Davis
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
- Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
- Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA
- Department of Laboratory Medicine & Pathology, University of Washington, Seattle, WA, 98109, USA
| | - Cole A DeForest
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
- Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
- Department of Chemistry, University of Washington, Seattle, WA, 98105, USA
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98105, USA
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, WA, 98109, USA
- Institute for Protein Design, University of Washington, Seattle, WA, 98105, USA
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12
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Song X, Cui Y, Zhu T. MicroRNA-19 upregulation attenuates cardiac fibrosis via targeting connective tissue growth factor. Am J Med Sci 2023; 365:375-385. [PMID: 36539014 DOI: 10.1016/j.amjms.2022.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 09/21/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Previous studies have shown the role of microRNA (miR)-19 in aging-related heart failure. The present study aimed to verify the effects of miR-19 on cardiac fibrosis and its target. METHODS Cardiac fibrosis was induced by myocardial infarction (MI)-induced heart failure and angiotensin (Ang) II-treated rats in vivo, and was induced in Ang II-treated cardiac fibroblasts (CFs) in vitro. RESULTS The expression of miR-19 was reduced in the heart tissue of MI and Ang II-treated rats, and Ang II-treated CFs. The impaired cardiac function in rats was repaired after miR-19 administration. The levels of collagen I, collagen III and transforming growth factor-beta (TGF-β) increased in the heart tissue of MI and Ang II-treated rats, and Ang II-treated CFs. These increases were reversed by miR-19 agomiR. Moreover, the bioinformatic analysis and luciferase reporter assays demonstrated that connective tissue growth factor (CTGF) was a direct target of miR-19. MiR-19 treatment inhibited CTGF expression in CFs, while CTGF overexpression inhibited miR-19 agomiR to attenuate the Ang II-induced increases of collagen I and collagen III in CFs. The increases of p-ERK, p-JNK and p-p38 in the CFs induced by Ang II were repressed by miR-19 agomiR. CONCLUSIONS Upregulating miR-19 can improve cardiac function and attenuate cardiac fibrosis by inhibiting the CTGF and MAPK pathways.
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Affiliation(s)
- Xiaozheng Song
- Department of Cardiology, Shengli Oilfield Central Hospital, 31 Jinan Road, Dongying 257034, China
| | - Yuqiang Cui
- Department of Cardiology, Shengli Oilfield Central Hospital, 31 Jinan Road, Dongying 257034, China
| | - Teng Zhu
- Department of Cardiology, Shengli Oilfield Central Hospital, 31 Jinan Road, Dongying 257034, China.
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13
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Bretherton RC, Reichardt IM, Zabrecky KA, Goldstein AJ, Bailey LR, Bugg D, McMillen TS, Kooiker KB, Flint GV, Martinson A, Gunaje J, Koser F, Plaster E, Linke WA, Regnier M, Moussavi-Harami F, Sniadecki NJ, DeForest CA, Davis J. Correcting dilated cardiomyopathy with fibroblast-targeted p38 deficiency. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.23.523684. [PMID: 36747691 PMCID: PMC9900749 DOI: 10.1101/2023.01.23.523684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Inherited mutations in contractile and structural genes, which decrease cardiomyocyte tension generation, are principal drivers of dilated cardiomyopathy (DCM)- the leading cause of heart failure 1,2 . Progress towards developing precision therapeutics for and defining the underlying determinants of DCM has been cardiomyocyte centric with negligible attention directed towards fibroblasts despite their role in regulating the best predictor of DCM severity, cardiac fibrosis 3,4 . Given that failure to reverse fibrosis is a major limitation of both standard of care and first in class precision therapeutics for DCM, this study examined whether cardiac fibroblast-mediated regulation of the heart's material properties is essential for the DCM phenotype. Here we report in a mouse model of inherited DCM that prior to the onset of fibrosis and dilated myocardial remodeling both the myocardium and extracellular matrix (ECM) stiffen from switches in titin isoform expression, enhanced collagen fiber alignment, and expansion of the cardiac fibroblast population, which we blocked by genetically suppressing p38α in cardiac fibroblasts. This fibroblast-targeted intervention unexpectedly improved the primary cardiomyocyte defect in contractile function and reversed ECM and dilated myocardial remodeling. Together these findings challenge the long-standing paradigm that ECM remodeling is a secondary complication to inherited defects in cardiomyocyte contractile function and instead demonstrate cardiac fibroblasts are essential contributors to the DCM phenotype, thus suggesting DCM-specific therapeutics will require fibroblast-specific strategies.
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14
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Green LC, Slone S, Anthony SR, Guarnieri AR, Parkins S, Shearer SM, Nieman ML, Roy S, Aube J, Wu X, Xu L, Kanisicak O, Tranter M. HuR-dependent expression of Wisp1 is necessary for TGFβ-induced cardiac myofibroblast activity. J Mol Cell Cardiol 2023; 174:38-46. [PMID: 36372279 PMCID: PMC9868076 DOI: 10.1016/j.yjmcc.2022.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 10/17/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
Abstract
Cardiac fibrosis is regulated by the activation and phenotypic switching of quiescent cardiac fibroblasts to active myofibroblasts, which have extracellular matrix (ECM) remodeling and contractile functions which play a central role in cardiac remodeling in response to injury. Here, we show that expression and activity of the RNA binding protein HuR is increased in cardiac fibroblasts upon transformation to an active myofibroblast. Pharmacological inhibition of HuR significantly blunts the TGFβ-dependent increase in ECM remodeling genes, total collagen secretion, in vitro scratch closure, and collagen gel contraction in isolated primary cardiac fibroblasts, suggesting a suppression of TGFβ-induced myofibroblast activation upon HuR inhibition. We identified twenty-four mRNA transcripts that were enriched for HuR binding following TGFβ treatment via photoactivatable ribonucleoside-enhanced crosslinking and immunoprecipitation (PAR-CLIP). Eleven of these HuR-bound mRNAs also showed significant co-expression correlation with HuR, αSMA, and periostin in primary fibroblasts isolated from the ischemic-zone of infarcted mouse hearts. Of these, WNT1-inducible signaling pathway protein-1 (Wisp1; Ccn4), was the most significantly associated with HuR expression in fibroblasts. Accordingly, we found Wisp1 expression to be increased in cardiac fibroblasts isolated from the ischemic-zone of mouse hearts following ischemia/reperfusion, and confirmed Wisp1 expression to be HuR-dependent in isolated fibroblasts. Finally, addition of exogenous recombinant Wisp1 partially rescued myofibroblast-induced collagen gel contraction following HuR inhibition, demonstrating that HuR-dependent Wisp1 expression plays a functional role in HuR-dependent MF activity downstream of TGFβ. In conclusion, HuR activity is necessary for the functional activation of primary cardiac fibroblasts in response to TGFβ, in part through post-transcriptional regulation of Wisp1.
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Affiliation(s)
- Lisa C Green
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America; Department of Pharmacology & Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Samuel Slone
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America; Department of Pharmacology & Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Sarah R Anthony
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Adrienne R Guarnieri
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Sharon Parkins
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Shannon M Shearer
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America; Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Michelle L Nieman
- Department of Pharmacology & Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Sudeshna Roy
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States of America
| | - Jeffrey Aube
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States of America
| | - Xiaoqing Wu
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS, United States of America
| | - Liang Xu
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS, United States of America
| | - Onur Kanisicak
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - Michael Tranter
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America.
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15
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Cheng P, Wang X, Liu Q, Yang T, Qu H, Zhou H. Extracellular vesicles mediate biological information delivery: A double-edged sword in cardiac remodeling after myocardial infarction. Front Pharmacol 2023; 14:1067992. [PMID: 36909157 PMCID: PMC9992194 DOI: 10.3389/fphar.2023.1067992] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
Acute myocardial infarction (AMI) is a severe ischemic disease with high morbidity and mortality worldwide. Maladaptive cardiac remodeling is a series of abnormalities in cardiac structure and function that occurs following myocardial infarction (MI). The pathophysiology of this process can be separated into two distinct phases: the initial inflammatory response, and the subsequent longer-term scar revision that includes the regression of inflammation, neovascularization, and fibrotic scar formation. Extracellular vesicles are nano-sized lipid bilayer vesicles released into the extracellular environment by eukaryotic cells, containing bioinformatic transmitters which are essential mediators of intercellular communication. EVs of different cellular origins play an essential role in cardiac remodeling after myocardial infarction. In this review, we first introduce the pathophysiology of post-infarction cardiac remodeling, as well as the biogenesis, classification, delivery, and functions of EVs. Then, we explore the dual role of these small molecule transmitters delivered by EVs in post-infarction cardiac remodeling, including the double-edged sword of pro-and anti-inflammation, and pro-and anti-fibrosis, which is significant for post-infarction cardiac repair. Finally, we discuss the pharmacological and engineered targeting of EVs for promoting heart repair after MI, thus revealing the potential value of targeted modulation of EVs and its use as a drug delivery vehicle in the therapeutic process of post-infarction cardiac remodeling.
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Affiliation(s)
- Peipei Cheng
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xinting Wang
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qian Liu
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Tao Yang
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huiyan Qu
- Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Cardiovascular Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Zhou
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Cardiovascular Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
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16
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Loss of KDM5B ameliorates pathological cardiac fibrosis and dysfunction by epigenetically enhancing ATF3 expression. Exp Mol Med 2022; 54:2175-2187. [PMID: 36481938 PMCID: PMC9794816 DOI: 10.1038/s12276-022-00904-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 09/26/2022] [Accepted: 10/24/2022] [Indexed: 12/13/2022] Open
Abstract
Excessive cardiac fibrosis is central to adverse cardiac remodeling and dysfunction leading to heart failure in many cardiac diseases. Histone methylation plays a crucial role in various pathophysiological events. However, the role of histone methylation modification enzymes in pathological cardiac fibrosis needs to be fully elucidated. Here, we identified lysine demethylase 5B (KDM5B), a histone H3K4me2/me3 demethylase, as a key epigenetic mediator of pathological cardiac fibrosis. KDM5B expression was upregulated in cardiac fibroblasts and myocardial tissues in response to pathological stress. KDM5B deficiency markedly ameliorated cardiac fibrosis, improved cardiac function, and prevented adverse cardiac remodeling following myocardial infarction (MI) or pressure overload. KDM5B knockout or inhibitor treatment constrained the transition of cardiac fibroblasts to profibrogenic myofibroblasts and suppressed fibrotic responses. KDM5B deficiency also facilitated the transformation of cardiac fibroblasts to endothelial-like cells and promoted angiogenesis in response to myocardial injury. Mechanistically, KDM5B bound to the promoter of activating transcription factor 3 (Atf3), an antifibrotic regulator of cardiac fibrosis, and inhibited ATF3 expression by demethylating the activated H3K4me2/3 modification, leading to the enhanced activation of TGF-β signaling and excessive expression of profibrotic genes. Our study indicates that KDM5B drives pathological cardiac fibrosis and represents a candidate target for intervention in cardiac dysfunction and heart failure.
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17
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Jiang S, Gu L, Hu Y, Ren Y, Yang Z, Chai C, Yu B, Ge H, Cao Z, Zhao F. Inhibition of TRPC6 suppressed TGFβ-induced fibroblast-myofibroblast transdifferentiation in renal interstitial NRK-49F cells. Exp Cell Res 2022; 421:113374. [PMID: 36206825 DOI: 10.1016/j.yexcr.2022.113374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 12/29/2022]
Abstract
Renal fibrosis is a global health concern with limited curative treatment. Canonical transient receptor potential channel 6 (TRPC6), a nonselective cation channel, has been shown to regulate the renal fibrosis in murine models. However, the molecular mechanism is unclear. Fibroblast-myofibroblast transdifferentiation is one of the critical steps in the progression of renal fibrosis. In the present study, we demonstrate that transforming growth factor (TGF)-β1 exposure significantly increases the TRPC6 expression in renal interstitial fibroblast NRK-49F cells. Pharmacological inhibition of TRPC6 and knockdown of Trpc6 by siRNA alleviate TGF-β1-increased expression levels of α-smooth muscle actin (α-SMA) and collagen I, two key markers of myofibroblasts. Although direct activation of TRPC6 by 1-oleoyl-2-acetyl-sn-glycerol (OAG) does not affect the expression of α-SMA and collagen I, OAG potentiates TGF-β1-induced fibroblast-myofibroblast transdifferentiation. Further study demonstrates that TGF-β1 exposure increases the phosphorylation level of p38 and Yes-associated protein (YAP) translocation into the nuclei. Inhibition of p38 and YAP decreases TGF-β1-enhanced TRPC6 and α-SMA expression. In conclusion, we demonstrate that TRPC6 is a key regulator of TGF-β1-induced fibroblast-myofibroblast transdifferentiation and provides the mechanism of how TGF-β1 exposure regulates TRPC6 expression in NRK-49F fibroblasts.
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Affiliation(s)
- Shan Jiang
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Lifei Gu
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China; NMPA Key Laboratory for Quality Research and Evaluation of Traditional Chinese Medicine, Shenzhen Institute for Drug Control, Shenzhen, Guangdong, 518057, China
| | - Yixin Hu
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Younan Ren
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Zhao Yang
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Chengzhi Chai
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Boyang Yu
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Haitao Ge
- Jiangsu Suzhong Pharmaceutical Group Co., Ltd., Taizhou, Jiangsu, 225500, China
| | - Zhengyu Cao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Fang Zhao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
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18
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Wu M, Xing Q, Duan H, Qin G, Sang N. Suppression of NADPH oxidase 4 inhibits PM 2.5-induced cardiac fibrosis through ROS-P38 MAPK pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155558. [PMID: 35504386 DOI: 10.1016/j.scitotenv.2022.155558] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/14/2022] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
Fine particulate matter (PM2.5) has been consistently linked to cardiovascular diseases, and cardiac fibrosis plays a crucial role in the occurrence and development of heart diseases. It is reported that NOX4-dependent redox signaling are responsible for TGFβ-mediated profibrotic responses. The current study was designed to explore the possible mechanisms of cardiac fibrosis by PM2.5 both in vitro and in vivo. Female C57BL/6 mice received PM2.5 (3 mg/kg b.w.) exposure with/without NOX4 inhibitor (apocynin, 25 mg/kg b.w.) or ROS scavenger (NALC, 50 mg/kg b.w.), every other day, for 4 weeks. H9C2 cells were incubated with PM2.5 (3 μg/mL) with/without 5 mM NALC, TGFβ inhibitor (SB431542, 10 μM), or siRNA-NOX4 for 24 h. The results demonstrated that PM2.5 induced evident collagen deposition and elevated expression of fibrosis biomarkers (Col1a1 & Col3a1). Significant systemic inflammatory response and cardiac oxidative stress were triggered by PM2.5. PM2.5 increased the protein expression of TGFβ1, NOX4, and P38 MAPK. Notably, the increased effects of PM2.5 could be suppressed by SB431542, siRNA-NOX4 in vitro or apocynin in vivo, and NALC. The reverse verification experiments further supported the involvement of the TGFβ/NOX4/ROS/P38 MAPK signaling pathway in the myocardial fibrosis induced by PM2.5. In summary, the current study provided evidence that PM2.5 challenge led to cardiac fibrosis through oxidative stress, systemic inflammation, and subsequent TGFβ/NOX4/ROS/P38 MAPK pathway and may offer new therapeutic targets in cardiac fibrosis.
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Affiliation(s)
- Meiqiong Wu
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China; Department of Children and Adolescences Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China.
| | - Qisong Xing
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Huiling Duan
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Guohua Qin
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China.
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China.
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19
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Wang B, Tan Y, Zhou W, Yang J, Jiang Y, Liu X, Zhan Z. Loss of BTK ameliorates the pathological cardiac fibrosis and dysfunction. Matrix Biol 2022; 112:171-189. [PMID: 36031013 DOI: 10.1016/j.matbio.2022.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/30/2022] [Accepted: 08/24/2022] [Indexed: 01/14/2023]
Abstract
Cardiac fibrosis is a common irreversible pathological feature of diverse heart disorders. Uncontrolled cardiac fibrosis contributes to maladaptive cardiac remodeling and eventually heart failure. However, the molecular determinants of ischemic and non-ischemic pathological cardiac fibrosis remain largely unknown. Here, we investigated the role of Bruton's tyrosine kinase (BTK) in cardiac fibrosis and remodeling of mice under various pathological conditions. BTK expression was increased in myocardium of mice after pressure overload or myocardial infarction (MI). BTK was mainly located in cardiac fibroblasts of myocardium, and its expression in isolated cardiac fibroblasts was also upregulated following TGF-β treatment. The deficiency or pharmacological inhibition of BTK with the second-generation inhibitor Acalabrutinib attenuated cardiac fibrosis, preserved cardiac function and prevented adverse cardiac remodeling, which protected against heart failure in mice following pressure overload or MI. BTK deficiency or inhibitor treatment significantly decreased the expression of pro-fibrotic molecules in isolated cardiac fibroblasts and inhibited the transition of fibroblasts to myofibroblasts in response to diverse pathological stresses. BTK directly bound and phosphorylated TGF-β receptor Ⅰ (TβRⅠ) at tyrosine 182, and then promoted the activation of downstream SMAD-dependent or -independent TGF-β signaling, leading to the enhanced transition of fibroblasts to pro-fibrotic myofibroblasts and the excessive extracellular matrix gene expression. Our finding uncovers a driving role of BTK in cardiac fibrosis and dysfunction following pressure overload and MI stress, and highlights novel pathogenic mechanisms in ischemic and non-ischemic maladaptive cardiac remodeling, which presents as a promising target for the development of anti-fibrotic therapy.
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Affiliation(s)
- Bo Wang
- Shanghai Institute of Transplantation, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yong Tan
- Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Wenhui Zhou
- Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Jing Yang
- Department of Cardiology, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui hospital, Fudan University, Shanghai 200031, China
| | - Yuyu Jiang
- Department of Pathogen Biology, Naval Medical University, Shanghai 200433, China
| | - Xingguang Liu
- Department of Pathogen Biology, Naval Medical University, Shanghai 200433, China.
| | - Zhenzhen Zhan
- Shanghai Institute of Transplantation, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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20
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Cunha PS, Laranjo S, Heijman J, Oliveira MM. The Atrium in Atrial Fibrillation - A Clinical Review on How to Manage Atrial Fibrotic Substrates. Front Cardiovasc Med 2022; 9:879984. [PMID: 35859594 PMCID: PMC9289204 DOI: 10.3389/fcvm.2022.879984] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 06/03/2022] [Indexed: 12/27/2022] Open
Abstract
Atrial fibrillation (AF) is the most common sustained arrhythmia in the population and is associated with a significant clinical and economic burden. Rigorous assessment of the presence and degree of an atrial arrhythmic substrate is essential for determining treatment options, predicting long-term success after catheter ablation, and as a substrate critical in the pathophysiology of atrial thrombogenesis. Catheter ablation of AF has developed into an essential rhythm-control strategy. Nowadays is one of the most common cardiac ablation procedures performed worldwide, with its success inversely related to the extent of atrial structural disease. Although atrial substrate evaluation remains complex, several diagnostic resources allow for a more comprehensive assessment and quantification of the extent of left atrial structural remodeling and the presence of atrial fibrosis. In this review, we summarize the current knowledge on the pathophysiology, etiology, and electrophysiological aspects of atrial substrates promoting the development of AF. We also describe the risk factors for its development and how to diagnose its presence using imaging, electrocardiograms, and electroanatomic voltage mapping. Finally, we discuss recent data regarding fibrosis biomarkers that could help diagnose atrial fibrotic substrates.
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Affiliation(s)
- Pedro Silva Cunha
- Arrhythmology, Pacing and Electrophysiology Unit, Cardiology Service, Santa Marta Hospital, Central Lisbon Hospital University Center, Lisbon, Portugal
- Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal
- Comprehensive Health Research Center, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Sérgio Laranjo
- Arrhythmology, Pacing and Electrophysiology Unit, Cardiology Service, Santa Marta Hospital, Central Lisbon Hospital University Center, Lisbon, Portugal
- Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal
- Comprehensive Health Research Center, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Jordi Heijman
- Department of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
| | - Mário Martins Oliveira
- Arrhythmology, Pacing and Electrophysiology Unit, Cardiology Service, Santa Marta Hospital, Central Lisbon Hospital University Center, Lisbon, Portugal
- Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal
- Comprehensive Health Research Center, Universidade NOVA de Lisboa, Lisbon, Portugal
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21
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Stojanovic D, Mitic V, Stojanovic M, Milenkovic J, Ignjatovic A, Milojkovic M. The Scientific Rationale for the Introduction of Renalase in the Concept of Cardiac Fibrosis. Front Cardiovasc Med 2022; 9:845878. [PMID: 35711341 PMCID: PMC9193824 DOI: 10.3389/fcvm.2022.845878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 04/25/2022] [Indexed: 12/17/2022] Open
Abstract
Cardiac fibrosis represents a redundant accumulation of extracellular matrix proteins, resulting from a cascade of pathophysiological events involved in an ineffective healing response, that eventually leads to heart failure. The pathophysiology of cardiac fibrosis involves various cellular effectors (neutrophils, macrophages, cardiomyocytes, fibroblasts), up-regulation of profibrotic mediators (cytokines, chemokines, and growth factors), and processes where epithelial and endothelial cells undergo mesenchymal transition. Activated fibroblasts and myofibroblasts are the central cellular effectors in cardiac fibrosis, serving as the main source of matrix proteins. The most effective anti-fibrotic strategy will have to incorporate the specific targeting of the diverse cells, pathways, and their cross-talk in the pathogenesis of cardiac fibroproliferation. Additionally, renalase, a novel protein secreted by the kidneys, is identified. Evidence demonstrates its cytoprotective properties, establishing it as a survival element in various organ injuries (heart, kidney, liver, intestines), and as a significant anti-fibrotic factor, owing to its, in vitro and in vivo demonstrated pleiotropy to alleviate inflammation, oxidative stress, apoptosis, necrosis, and fibrotic responses. Effective anti-fibrotic therapy may seek to exploit renalase’s compound effects such as: lessening of the inflammatory cell infiltrate (neutrophils and macrophages), and macrophage polarization (M1 to M2), a decrease in the proinflammatory cytokines/chemokines/reactive species/growth factor release (TNF-α, IL-6, MCP-1, MIP-2, ROS, TGF-β1), an increase in anti-apoptotic factors (Bcl2), and prevention of caspase activation, inflammasome silencing, sirtuins (1 and 3) activation, and mitochondrial protection, suppression of epithelial to mesenchymal transition, a decrease in the pro-fibrotic markers expression (’α-SMA, collagen I, and III, TIMP-1, and fibronectin), and interference with MAPKs signaling network, most likely as a coordinator of pro-fibrotic signals. This review provides the scientific rationale for renalase’s scrutiny regarding cardiac fibrosis, and there is great anticipation that these newly identified pathways are set to progress one step further. Although substantial progress has been made, indicating renalase’s therapeutic promise, more profound experimental work is required to resolve the accurate underlying mechanisms of renalase, concerning cardiac fibrosis, before any potential translation to clinical investigation.
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Affiliation(s)
- Dijana Stojanovic
- Institute of Pathophysiology, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Valentina Mitic
- Department of Cardiovascular Rehabilitation, Institute for Treatment and Rehabilitation "Niska Banja", Niska Banja, Serbia
| | - Miodrag Stojanovic
- Department of Medical Statistics and Informatics, Faculty of Medicine, University of Niš, Niš, Serbia.,Center of Informatics and Biostatistics in Healthcare, Institute for Public Health, Niš, Serbia
| | - Jelena Milenkovic
- Institute of Pathophysiology, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Aleksandra Ignjatovic
- Department of Medical Statistics and Informatics, Faculty of Medicine, University of Niš, Niš, Serbia.,Center of Informatics and Biostatistics in Healthcare, Institute for Public Health, Niš, Serbia
| | - Maja Milojkovic
- Institute of Pathophysiology, Faculty of Medicine, University of Niš, Niš, Serbia
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22
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Garvin AM, Hale TM. State of Change: Epigenetic and Mitochondrial Regulation of Cardiac Fibroblast Activation. CURRENT OPINION IN PHYSIOLOGY 2022. [DOI: 10.1016/j.cophys.2022.100557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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23
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Cardiac fibroblast sub-types in vitro reflect pathological cardiac remodeling in vivo. Matrix Biol Plus 2022; 15:100113. [PMID: 35719864 PMCID: PMC9198323 DOI: 10.1016/j.mbplus.2022.100113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/26/2022] [Accepted: 06/03/2022] [Indexed: 12/03/2022] Open
Abstract
A panel of 12 fibrosis related genes clearly identified heart failure (HF) patients better than measurement of the collagen-related hydroxyproline content. A subcluster enriched for ischemic HF was recognized, but not for diabetes, obesity, or gender. Single-cell transcriptomic analysis of in vitro differentiated mouse cardiac fibroblasts distinguished 6 subpopulations, including a contractile Acta2high precursor population, and Acta2low subpopulations with high production of extracellular matrix molecules. The 12 gene profile identified in HF patients showed highest similarity to the fibroblast subset with the strongest expression of extracellular matrix molecules. Major features of cardiac fibroblast differentiation in heart failure patients, in murine heart disease models, and in cell culture of primary murine cardiac fibroblast are shared.
Many heart diseases are associated with fibrosis, but it is unclear whether different types of heart disease correlate with different subtypes of activated fibroblasts and to which extent such diversity is modeled during in vitro activation of primary cardiac fibroblasts. Analyzing the expression of 82 fibrosis related genes in 65 heart failure (HF) patients, we identified a panel of 12 genes clearly distinguishing HF patients better from healthy controls than measurement of the collagen-related hydroxyproline content. A subcluster enriched in ischemic HF was recognized, but not for diabetes, high BMI, or gender. Single-cell transcriptomic analysis of in vitro activated mouse cardiac fibroblasts distinguished 6 subpopulations, including a contractile Acta2high precursor population, which was predicted by time trajectory analysis to develop into Acta2low subpopulations with high production of extracellular matrix molecules. The 12 gene profile identified in HF patients showed highest similarity to the fibroblast subset with the strongest expression of extracellular matrix molecules. Population markers identified were furthermore able to clearly cluster different disease stages in a murine model for myocardial infarct. These data suggest that major features of cardiac fibroblast activation in heart failure patients, in murine heart disease models, and in cell culture of primary murine cardiac fibroblast are shared.
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24
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Varzideh F, Kansakar U, Donkor K, Wilson S, Jankauskas SS, Mone P, Wang X, Lombardi A, Santulli G. Cardiac Remodeling After Myocardial Infarction: Functional Contribution of microRNAs to Inflammation and Fibrosis. Front Cardiovasc Med 2022; 9:863238. [PMID: 35498051 PMCID: PMC9043126 DOI: 10.3389/fcvm.2022.863238] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/08/2022] [Indexed: 01/12/2023] Open
Abstract
After an ischemic injury, the heart undergoes a complex process of structural and functional remodeling that involves several steps, including inflammatory and fibrotic responses. In this review, we are focusing on the contribution of microRNAs in the regulation of inflammation and fibrosis after myocardial infarction. We summarize the most updated studies exploring the interactions between microRNAs and key regulators of inflammation and fibroblast activation and we discuss the recent discoveries, including clinical applications, in these rapidly advancing fields.
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Affiliation(s)
- Fahimeh Varzideh
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Institute for Neuroimmunology and Inflammation (INI), New York, NY, United States
| | - Urna Kansakar
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Institute for Neuroimmunology and Inflammation (INI), New York, NY, United States
| | - Kwame Donkor
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
| | - Scott Wilson
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
| | - Stanislovas S. Jankauskas
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Institute for Neuroimmunology and Inflammation (INI), New York, NY, United States
| | - Pasquale Mone
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
| | - Xujun Wang
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Institute for Neuroimmunology and Inflammation (INI), New York, NY, United States
| | - Angela Lombardi
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
| | - Gaetano Santulli
- Department of Medicine, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Aging Research, New York, NY, United States
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Institute for Neuroimmunology and Inflammation (INI), New York, NY, United States
- *Correspondence: Gaetano Santulli,
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25
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Tsai CR, Martin JF. Hippo signaling in cardiac fibroblasts during development, tissue repair, and fibrosis. Curr Top Dev Biol 2022; 149:91-121. [PMID: 35606063 PMCID: PMC10898347 DOI: 10.1016/bs.ctdb.2022.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The evolutionarily conserved Hippo signaling pathway plays key roles in regulating the balance between cell proliferation and apoptosis, cell differentiation, organ size control, tissue repair, and regeneration. Recently, the Hippo pathway has been shown to regulate heart fibrosis, defined as excess extracellular matrix (ECM) deposition and increased tissue stiffness. Cardiac fibroblasts (CFs) are the primary cell type that produces, degrades, and remodels the ECM during homeostasis, aging, inflammation, and tissue repair and regeneration. Here, we review the available evidence from the current literature regarding how the Hippo pathway regulates the formation and function of CFs during heart development and tissue repair.
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Affiliation(s)
- Chang-Ru Tsai
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, United States
| | - James F Martin
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, United States; Cardiomyocyte Renewal Laboratory, Texas Heart Institute, Houston, TX, United States.
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26
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Bugg D, Bailey LRJ, Bretherton RC, Beach KE, Reichardt IM, Robeson KZ, Reese AC, Gunaje J, Flint G, DeForest CA, Stempien-Otero A, Davis J. MBNL1 drives dynamic transitions between fibroblasts and myofibroblasts in cardiac wound healing. Cell Stem Cell 2022; 29:419-433.e10. [PMID: 35176223 PMCID: PMC8929295 DOI: 10.1016/j.stem.2022.01.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 11/30/2021] [Accepted: 01/24/2022] [Indexed: 12/18/2022]
Abstract
Dynamic fibroblast to myofibroblast state transitions underlie the heart's fibrotic response. Because transcriptome maturation by muscleblind-like 1 (MBNL1) promotes differentiated cell states, this study investigated whether tactical control of MBNL1 activity could alter myofibroblast activity and fibrotic outcomes. In healthy mice, cardiac fibroblast-specific overexpression of MBNL1 transitioned the fibroblast transcriptome to that of a myofibroblast and after injury promoted myocyte remodeling and scar maturation. Both fibroblast- and myofibroblast-specific loss of MBNL1 limited scar production and stabilization, which was ascribed to negligible myofibroblast activity. The combination of MBNL1 deletion and injury caused quiescent fibroblasts to expand and adopt features of cardiac mesenchymal stem cells, whereas transgenic MBNL1 expression blocked fibroblast proliferation and drove the population into a mature myofibroblast state. These data suggest MBNL1 is a post-transcriptional switch, controlling fibroblast state plasticity during cardiac wound healing.
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Affiliation(s)
- Darrian Bugg
- Department of Lab Medicine & Pathology, University of Washington, Seattle, WA 98195, USA
| | - Logan R J Bailey
- Molecular & Cellular Biology, University of Washington, Seattle, WA 98195, USA
| | - Ross C Bretherton
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Kylie E Beach
- Department of Lab Medicine & Pathology, University of Washington, Seattle, WA 98195, USA
| | | | - Kalen Z Robeson
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Anna C Reese
- Department of Lab Medicine & Pathology, University of Washington, Seattle, WA 98195, USA
| | - Jagadambika Gunaje
- Department of Lab Medicine & Pathology, University of Washington, Seattle, WA 98195, USA
| | - Galina Flint
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Cole A DeForest
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | | | - Jennifer Davis
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA; Department of Lab Medicine & Pathology, University of Washington, Seattle, WA 98195, USA; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA 98109, USA.
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27
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Hong JH, Zhang HG. Transcription Factors Involved in the Development and Prognosis of Cardiac Remodeling. Front Pharmacol 2022; 13:828549. [PMID: 35185581 PMCID: PMC8849252 DOI: 10.3389/fphar.2022.828549] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/14/2022] [Indexed: 01/09/2023] Open
Abstract
To compensate increasing workload, heart must work harder with structural changes, indicated by increasing size and changing shape, causing cardiac remodeling. However, pathological and unlimited compensated cardiac remodeling will ultimately lead to decompensation and heart failure. In the past decade, numerous studies have explored many signaling pathways involved in cardiac remodeling, but the complete mechanism of cardiac remodeling is still unrecognized, which hinders effective treatment and drug development. As gene transcriptional regulators, transcription factors control multiple cellular activities and play a critical role in cardiac remodeling. This review summarizes the regulation of fetal gene reprogramming, energy metabolism, apoptosis, autophagy in cardiomyocytes and myofibroblast activation of cardiac fibroblasts by transcription factors, with an emphasis on their potential roles in the development and prognosis of cardiac remodeling.
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28
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Wu Y, Wang M, Xu J, Wei J, Yang H. Signature network-based survey of the effects of a traditional Chinese medicine on heart failure. JOURNAL OF ETHNOPHARMACOLOGY 2022; 283:114750. [PMID: 34662664 DOI: 10.1016/j.jep.2021.114750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/07/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Heart failure (HF) after myocardial infarction (MI) is one of the most common disabling and painful diseases. A traditional Chinese medicine (TCM) formula, Shengmaisan, is known as a multitarget medicine that is widely used clinically to treat heart failure (HF) in Asian countries. However, its mechanism has not been comprehensively demonstrated. AIM OF THE STUDY To use a prediction network to figure out which disease link SMZ mainly alleviates in HF and find biomarkers related to myocardial fibrosis in the serum for clinical reference. MATERIALS AND METHODS In this article, we collected a large amount of actual measurement data and our own proteomics data, along with the biomarkers of heart failure staging under study to establish a precise network. Then, we tested and verified the medicinal effect of SMZ in treatment of HF after MI by Measurement of left ventricular wall thickness and ejection fraction by echocardiography. Then we tested the serum level of the potential targets of SMZ predicting by the network we developed using ELISA. RESULTS the cardiac ejection fraction and retarding the thinning of the anterior wall of the left ventricle increased after treating with SMZ. The serum level of EGFR and MAPK1 decreased in the groups treated with SMZ. CONCLUSION SMZ can improve the cardiac function of rats with MI by increasing the cardiac ejection fraction and retarding the thinning of the anterior wall of the left ventricle. In addition, SMZ could delay heart failure mainly by inhibiting the progression of myocardial fibrosis through decreasing the EGFR and MAPK1 levels.
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Affiliation(s)
- Yue Wu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Menglan Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Jing Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Junying Wei
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Hongjun Yang
- Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases, Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
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29
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Yang W, Chen Y, Huang C, Wang W, Huang C, Li Y. MiR-18a Inhibits PI3K/AKT Signaling Pathway to Regulate PDGF BB-Induced Airway Smooth Muscle Cell Proliferation and Phenotypic Transformation. Physiol Res 2021. [DOI: 10.33549//physiolres.934753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The increased proliferation and migration of airway smooth muscle cells (ASMCs) is a key process in the formation of airway remodeling in asthma. In this study, we focused on the expression of mircoRNA-18a (miR-18a) in airway remodeling in bronchial asthma and its related mechanisms. ASMCs are induced by platelet-derived growth factor BB (PDGF-BB) for in vitro airway remodeling. The expression of miR-18a in sputum of asthmatic patients and healthy volunteers was detected by qRT-PCR. The expression of miR-18a was over-expressed or interfered with in PDGF-BB-treated ASMCs. Cell proliferation, apoptosis and migration were detected by MTT, flow cytometry and Transwell, respectively; the expression of contractile phenotype marker proteins (SM-22α, α-SM-actin, calponin) and key molecules of the phosphatidylinositol 3-kinase (PI3K)/AKT pathway (PI3K, p-PI3K, AKT and p-AKT) in ASMCs were detected by Western blot. The expression of miR-18a was down-regulated in the sputum and PDGF-BB-treated ASMCs of asthma patients. PDGF-BB could promote the proliferation and migration of ASMCs and inhibit their apoptosis; it could also promote the phenotypic transformation of ASMCs and activate the PI3K/AKT pathway. MiR-18a could inhibit the proliferation, migration ability and phenotypic transformation of ASMCs induced by PDGF-BB to a certain extent and alleviate the effect of PDGF-BB in supressing apoptosis, while miR-18a could inhibit the activation of the PI3K/AKT pathway. MiR-18a inhibits PDGF-BB-induced proliferation, migration and phenotypic conversion of ASMCs by inhibiting the PI3K/AKT pathway, thus attenuating airway remodeling in asthma.
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30
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Nicin L, Wagner JUG, Luxán G, Dimmeler S. Fibroblast-mediated intercellular crosstalk in the healthy and diseased heart. FEBS Lett 2021; 596:638-654. [PMID: 34787896 DOI: 10.1002/1873-3468.14234] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 01/07/2023]
Abstract
Cardiac fibroblasts constitute a major cell population in the heart. They secrete extracellular matrix components and various other factors shaping the microenvironment of the heart. In silico analysis of intercellular communication based on single-cell RNA sequencing revealed that fibroblasts are the source of the majority of outgoing signals to other cell types. This observation suggests that fibroblasts play key roles in orchestrating cellular interactions that maintain organ homeostasis but that can also contribute to disease states. Here, we will review the current knowledge of fibroblast interactions in the healthy, diseased, and aging heart. We focus on the interactions that fibroblasts establish with other cells of the heart, specifically cardiomyocytes, endothelial cells and immune cells, and particularly those relying on paracrine, electrical, and exosomal communication modes.
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Affiliation(s)
- Luka Nicin
- Institute for Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany.,German Center for Cardiovascular Research (DZHK), Frankfurt am Main, Germany.,Cardio-Pulmonary Institute (CPI), Frankfurt am Main, Germany
| | - Julian U G Wagner
- Institute for Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany.,German Center for Cardiovascular Research (DZHK), Frankfurt am Main, Germany.,Cardio-Pulmonary Institute (CPI), Frankfurt am Main, Germany
| | - Guillermo Luxán
- Institute for Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany.,German Center for Cardiovascular Research (DZHK), Frankfurt am Main, Germany.,Cardio-Pulmonary Institute (CPI), Frankfurt am Main, Germany
| | - Stefanie Dimmeler
- Institute for Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany.,German Center for Cardiovascular Research (DZHK), Frankfurt am Main, Germany.,Cardio-Pulmonary Institute (CPI), Frankfurt am Main, Germany
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31
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Yang W, Chen Y, Huang C, Wang W, Huang C, Li Y. MiR-18a Inhibits PI3K/AKT Signaling Pathway to Regulate PDGF BB-Induced Airway Smooth Muscle Cell Proliferation and Phenotypic Transformation. Physiol Res 2021; 70:883-892. [PMID: 34717064 DOI: 10.33549/physiolres.934753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The increased proliferation and migration of airway smooth muscle cells (ASMCs) is a key process in the formation of airway remodeling in asthma. In this study, we focused on the expression of mircoRNA-18a (miR-18a) in airway remodeling in bronchial asthma and its related mechanisms. ASMCs are induced by platelet-derived growth factor BB (PDGF-BB) for in vitro airway remodeling. The expression of miR-18a in sputum of asthmatic patients and healthy volunteers was detected by qRT-PCR. The expression of miR-18a was over-expressed or interfered with in PDGF-BB-treated ASMCs. Cell proliferation, apoptosis and migration were detected by MTT, flow cytometry and Transwell, respectively; the expression of contractile phenotype marker proteins (SM-22alpha, alpha-SM-actin, calponin) and key molecules of the phosphatidylinositol 3-kinase (PI3K)/AKT pathway (PI3K, p-PI3K, AKT and p-AKT) in ASMCs were detected by Western blot. The expression of miR-18a was down-regulated in the sputum and PDGF-BB-treated ASMCs of asthma patients. PDGF-BB could promote the proliferation and migration of ASMCs and inhibit their apoptosis; it could also promote the phenotypic transformation of ASMCs and activate the PI3K/AKT pathway. MiR-18a could inhibit the proliferation, migration ability and phenotypic transformation of ASMCs induced by PDGF-BB to a certain extent and alleviate the effect of PDGF-BB in supressing apoptosis, while miR-18a could inhibit the activation of the PI3K/AKT pathway. MiR-18a inhibits PDGF-BB-induced proliferation, migration and phenotypic conversion of ASMCs by inhibiting the PI3K/AKT pathway, thus attenuating airway remodeling in asthma.
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Affiliation(s)
- Wei Yang
- Department of Pediatrics, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China. and
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32
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Rogers JD, Holmes JW, Saucerman JJ, Richardson WJ. Mechano-chemo signaling interactions modulate matrix production by cardiac fibroblasts. Matrix Biol Plus 2021; 10:100055. [PMID: 34195592 PMCID: PMC8233457 DOI: 10.1016/j.mbplus.2020.100055] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/23/2020] [Accepted: 11/23/2020] [Indexed: 01/20/2023] Open
Abstract
Extracellular matrix remodeling after myocardial infarction occurs in a dynamic environment in which local mechanical stresses and biochemical signaling species stimulate the accumulation of collagen-rich scar tissue. It is well-known that cardiac fibroblasts regulate post-infarction matrix turnover by secreting matrix proteins, proteases, and protease inhibitors in response to both biochemical stimuli and mechanical stretch, but how these stimuli act together to dictate cellular responses is still unclear. We developed a screen of cardiac fibroblast-secreted proteins in response to combinations of biochemical agonists and cyclic uniaxial stretch in order to elucidate the relationships between stretch, biochemical signaling, and cardiac matrix turnover. We found that stretch significantly synergized with biochemical agonists to inhibit the secretion of matrix metalloproteinases, with stretch either amplifying protease suppression by individual agonists or antagonizing agonist-driven upregulation of protease expression. Stretch also modulated fibroblast sensitivity towards biochemical agonists by either sensitizing cells towards agonists that suppress protease secretion or de-sensitizing cells towards agonists that upregulate protease secretion. These findings suggest that the mechanical environment can significantly alter fibrosis-related signaling in cardiac fibroblasts, suggesting caution when extrapolating in vitro data to predict effects of fibrosis-related cytokines in situations like myocardial infarction where mechanical stretch occurs.
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Affiliation(s)
- Jesse D. Rogers
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | - Jeffrey W. Holmes
- Departments of Biomedical Engineering, Medicine/Cardiovascular Disease, and Surgery/Cardiothoracic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jeffrey J. Saucerman
- Department of Biomedical Engineering and Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, USA
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33
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Collagen denaturation in the infarcted myocardium involves temporally distinct effects of MT1-MMP-dependent proteolysis and mechanical tension. Matrix Biol 2021; 99:18-42. [PMID: 34048934 DOI: 10.1016/j.matbio.2021.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 05/14/2021] [Accepted: 05/19/2021] [Indexed: 12/13/2022]
Abstract
Tissue injury results in profound alterations in the collagen network, associated with unfolding of the collagen triple helix, proteolytic degradation and generation of fragments. In the infarcted myocardium, changes in the collagen network are critically involved in the pathogenesis of left ventricular rupture, adverse remodeling and chronic dysfunction. We hypothesized that myocardial infarction is associated with temporally and spatially restricted patterns of collagen denaturation that may reflect distinct molecular mechanisms of collagen unfolding. We used a mouse model of non-reperfused myocardial infarction, and in vitro assays in fibroblast-populated collagen lattices. In healing infarcts, labeling with collagen hybridizing peptide (CHP) revealed two distinct patterns of collagen denaturation. During the inflammatory and proliferative phases of infarct healing, collagen denaturation was pericellular, localized in close proximity to macrophages and myofibroblasts. qPCR array analysis of genes associated with matrix remodeling showed that Membrane Type 1-Matrix Metalloproteinase (MT1-MMP) is markedly upregulated in infarct macrophages and fibroblasts, suggesting its involvement in pericellular collagen denaturation. In vitro, MT1-MMP-mediated pericellular collagen denaturation is involved in cardiac fibroblast migration. The effects of MT1-MMP on collagen denaturation and fibroblast migration involve the catalytic site, and require hemopexin domain-mediated actions. In contrast, during the maturation phase of infarct healing, extensive collagen denaturation was noted in the hypocellular infarct, in the infarct border zone and in the mitral valve annulus, in the absence of MT1-MMP. In vitro, mechanical tension in attached collagen lattices was sufficient to induce peripheral collagen denaturation. Our study suggests that in healing infarcts, early pericellular collagen denaturation may be important for migration of macrophages and reparative myofibroblasts in the infarct. Extensive denaturation of collagen fibers is noted in mature scars, likely reflecting mechanical tension. Chronic collagen denaturation may increase susceptibility of the matrix to proteolysis, thus contributing to progressive cardiac dilation and post-infarction heart failure.
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Reichardt IM, Robeson KZ, Regnier M, Davis J. Controlling cardiac fibrosis through fibroblast state space modulation. Cell Signal 2020; 79:109888. [PMID: 33340659 DOI: 10.1016/j.cellsig.2020.109888] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/13/2022]
Abstract
The transdifferentiation of cardiac fibroblasts into myofibroblasts after cardiac injury has traditionally been defined by a unidirectional continuum from quiescent fibroblasts, through activated fibroblasts, and finally to fibrotic-matrix producing myofibroblasts. However, recent lineage tracing and single cell RNA sequencing experiments have demonstrated that fibroblast transdifferentiation is much more complex. Growing evidence suggests that fibroblasts are more heterogenous than previously thought, and many new cell states have recently been identified. This review reexamines conventional fibroblast transdifferentiation paradigms with a dynamic state space lens, which could enable a more complex understanding of how fibroblast state dynamics alters fibrotic remodeling of the heart. This review will define cellular state space, how it relates to fibroblast state transitions, and how the canonical and non-canonical fibrotic signaling pathways modulate fibroblast cell state and cardiac fibrosis. Finally, this review explores the therapeutic potential of fibroblast state space modulation by p38 inhibition, yes-associated protein (YAP) inhibition, and fibroblast reprogramming.
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Affiliation(s)
- Isabella M Reichardt
- Department of Bioengineering, University of Washington, Seattle, WA 98105, United States.
| | - Kalen Z Robeson
- Department of Bioengineering, University of Washington, Seattle, WA 98105, United States.
| | - Michael Regnier
- Department of Bioengineering, University of Washington, Seattle, WA 98105, United States; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA 98109, United States; Center for Cardiovascular Biology, University of Washington, Seattle, WA 98109, United States; Center for Translational Muscle Research, University of Washington, Seattle, WA 98109, United States.
| | - Jennifer Davis
- Department of Bioengineering, University of Washington, Seattle, WA 98105, United States; Department of Pathology, University of Washington, 850 Republican, #343, Seattle, WA 98109, United States; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA 98109, United States; Center for Cardiovascular Biology, University of Washington, Seattle, WA 98109, United States; Center for Translational Muscle Research, University of Washington, Seattle, WA 98109, United States.
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Aujla PK, Kassiri Z. Diverse origins and activation of fibroblasts in cardiac fibrosis. Cell Signal 2020; 78:109869. [PMID: 33278559 DOI: 10.1016/j.cellsig.2020.109869] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 12/21/2022]
Abstract
Cardiac fibroblasts (cFBs) have emerged as a heterogenous cell population. Fibroblasts are considered the main cell source for synthesis of the extracellular matrix (ECM) and as such a dysregulation in cFB function, activity, or viability can lead to disrupted ECM structure or fibrosis. Fibrosis can be initiated in response to different injuries and stimuli, and can be reparative (beneficial) or reactive (damaging). FBs need to be activated to myofibroblasts (MyoFBs) which have augmented capacity in synthesizing ECM proteins, causing fibrosis. In addition to the resident FBs in the myocardium, a number of other cells (pericytes, fibrocytes, mesenchymal, and hematopoietic cells) can transform into MyoFBs, further driving the fibrotic response. Multiple molecules including hormones, cytokines, and growth factors stimulate this process leading to generation of activated MyoFBs. Contribution of different cell types to cFBs and MyoFBs can result in an exponential increase in the number of MyoFBs and an accelerated pro-fibrotic response. Given the diversity of the cell sources, and the array of interconnected signalling pathways that lead to formation of MyoFBs and subsequently fibrosis, identifying a single target to limit the fibrotic response in the myocardium has been challenging. This review article will delineate the importance and relevance of fibroblast heterogeneity in mediating fibrosis in different models of heart failure and will highlight important signalling pathways implicated in myofibroblast activation.
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Affiliation(s)
- Preetinder K Aujla
- Department of Physiology, Cardiovascular Research Center, University of Alberta, Edmonton, Alberta, Canada
| | - Zamaneh Kassiri
- Department of Physiology, Cardiovascular Research Center, University of Alberta, Edmonton, Alberta, Canada.
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DeLeon-Pennell KY, Barker TH, Lindsey ML. Fibroblasts: The arbiters of extracellular matrix remodeling. Matrix Biol 2020; 91-92:1-7. [PMID: 32504772 PMCID: PMC7434687 DOI: 10.1016/j.matbio.2020.05.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/29/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022]
Abstract
Extracellular matrix (ECM) is the foundation on which all cells and organs converge to orchestrate normal physiological functions. In the setting of pathology, the ECM is modified to incorporate additional roles, with modifications including turnover of existing ECM and deposition of new ECM. The fibroblast is center stage in coordinating both normal tissue homeostasis and response to disease. Understanding how fibroblasts work under normal conditions and are activated in response to injury or stress will provide mechanistic insight that triggers discovery of new therapeutic treatments for a wide range of disease. We highlight here fibroblast roles in the cancer, lung, and heart as example systems where fibroblasts are major contributors to homeostasis and pathology.
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Affiliation(s)
- Kristine Y DeLeon-Pennell
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, and Research Service, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC 29425, USA
| | - Thomas H Barker
- Department of Biomedical Engineering, University of Virginia, 415 Lane Road, Charlottesville, VA 22903, USA
| | - Merry L Lindsey
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, 985850 Nebraska Medical Center, Omaha, NE 68198-5850, USA; and Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68105; Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68105.
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Cardiac fibroblast activation during myocardial infarction wound healing: Fibroblast polarization after MI. Matrix Biol 2020; 91-92:109-116. [PMID: 32446909 DOI: 10.1016/j.matbio.2020.03.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 12/13/2022]
Abstract
Cardiac wound healing after myocardial infarction (MI) evolves from pro-inflammatory to anti-inflammatory to reparative responses, and the cardiac fibroblast is a central player during the entire transition. The fibroblast mirrors changes seen in the left ventricle infarct by undergoing a continuum of polarization phenotypes that follow pro-inflammatory, anti-inflammatory, and pro-scar producing profiles. The development of each phenotype transition is contingent upon the MI environment into which the fibroblast enters. In this mini-review, we summarize our current knowledge regarding cardiac fibroblast activation during MI and highlight key areas where gaps remain.
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