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Wang X, Du W, Li Y, Yang HH, Zhang Y, Akbar R, Morgan H, Peng T, Chen J, Sadayappan S, Hu YC, Fan Y, Huang W, Fan GC. Macrophage-enriched Sectm1a promotes efficient efferocytosis to attenuate ischemia/reperfusion-induced cardiac injury. JCI Insight 2024; 9:e173832. [PMID: 38456501 DOI: 10.1172/jci.insight.173832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 01/23/2024] [Indexed: 03/09/2024] Open
Abstract
Efficient clearance and degradation of apoptotic cardiomyocytes by macrophages (collectively termed efferocytosis) is critical for inflammation resolution and restoration of cardiac function after myocardial ischemia/reperfusion (I/R). Here, we define secreted and transmembrane protein 1a (Sectm1a), a cardiac macrophage-enriched gene, as a modulator of macrophage efferocytosis in I/R-injured hearts. Upon myocardial I/R, Sectm1a-KO mice exhibited impaired macrophage efferocytosis, leading to massive accumulation of apoptotic cardiomyocytes, cardiac inflammation, fibrosis, and consequently, exaggerated cardiac dysfunction. By contrast, therapeutic administration of recombinant SECTM1A protein significantly enhanced macrophage efferocytosis and improved cardiac function. Mechanistically, SECTM1A could elicit autocrine effects on the activation of glucocorticoid-induced TNF receptor (GITR) at the surface of macrophages, leading to the upregulation of liver X receptor α (LXRα) and its downstream efferocytosis-related genes and lysosomal enzyme genes. Our study suggests that Sectm1a-mediated activation of the Gitr/LXRα axis could be a promising approach to enhance macrophage efferocytosis for the treatment of myocardial I/R injury.
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Affiliation(s)
| | - Wa Du
- Department of Cancer Biology, and
| | - Yutian Li
- Department of Pharmacology and Systems Physiology
| | - Hui-Hui Yang
- Department of Pharmacology and Systems Physiology
| | - Yu Zhang
- Department of Pharmacology and Systems Physiology
| | - Rubab Akbar
- Department of Pharmacology and Systems Physiology
| | - Hannah Morgan
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Tianqing Peng
- Centre for Critical Illness Research, Lawson Health Research Institute, London, Ontario, Canada
| | - Jing Chen
- Division of Biomedical Informatics and
| | - Sakthivel Sadayappan
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Yueh-Chiang Hu
- Transgenic Animal and Genome Editing Facility, Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | | | - Wei Huang
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Liu BD, Akbar R, Oliverio A, Thapa K, Wang X, Fan GC. BACTERIAL EXTRACELLULAR VESICLES IN THE REGULATION OF INFLAMMATORY RESPONSE AND HOST-MICROBE INTERACTIONS. Shock 2024; 61:175-188. [PMID: 37878470 PMCID: PMC10921997 DOI: 10.1097/shk.0000000000002252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
ABSTRACT Extracellular vesicles (EVs) are a new revelation in cross-kingdom communication, with increasing evidence showing the diverse roles of bacterial EVs (BEVs) in mammalian cells and host-microbe interactions. Bacterial EVs include outer membrane vesicles released by gram-negative bacteria and membrane vesicles generated from gram-positive bacteria. Recently, BEVs have drawn attention for their potential as biomarkers and therapeutic tools because they are nano-sized and can deliver bacterial cargo into host cells. Importantly, exposure to BEVs significantly affects various physiological and pathological responses in mammalian cells. Herein, we provide a comprehensive overview of the various effects of BEVs on host cells (i.e., immune cells, endothelial cells, and epithelial cells) and inflammatory/infectious diseases. First, the biogenesis and purification methods of BEVs are summarized. Next, the mechanisms and pathways identified by BEVs that stimulate either proinflammatory or anti-inflammatory responses are highlighted. In addition, we discuss the mechanisms by which BEVs regulate host-microbe interactions and their effects on the immune system. Finally, this review focuses on the contribution of BEVs to the pathogenesis of sepsis/septic shock and their therapeutic potential for the treatment of sepsis.
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Affiliation(s)
- Benjamin D. Liu
- Department of Chemistry and Biochemistry, The Ohio State University College of Arts and Sciences, Columbus, OH, 43210, USA
| | - Rubab Akbar
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Anna Oliverio
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Kajol Thapa
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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Feng Y, Cai L, Pook M, Liu F, Chang CH, Mouti MA, Nibhani R, Militi S, Dunford J, Philpott M, Fan Y, Fan GC, Liu Q, Qi J, Wang C, Hong W, Morgan H, Wang M, Sadayappan S, Jegga AG, Oppermann U, Wang Y, Huang W, Jiang L, Pauklin S. BRD9-SMAD2/3 Orchestrates Stemness and Tumorigenesis in Pancreatic Ductal Adenocarcinoma. Gastroenterology 2024; 166:139-154. [PMID: 37739089 DOI: 10.1053/j.gastro.2023.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND & AIMS The dismal prognosis of pancreatic ductal adenocarcinoma (PDAC) is linked to the presence of pancreatic cancer stem-like cells (CSCs) that respond poorly to current chemotherapy regimens. The epigenetic mechanisms regulating CSCs are currently insufficiently understood, which hampers the development of novel strategies for eliminating CSCs. METHODS By small molecule compound screening targeting 142 epigenetic enzymes, we identified that bromodomain-containing protein BRD9, a component of the BAF histone remodeling complex, is a key chromatin regulator to orchestrate the stemness of pancreatic CSCs via cooperating with the TGFβ/Activin-SMAD2/3 signaling pathway. RESULTS Inhibition and genetic ablation of BRD9 block the self-renewal, cell cycle entry into G0 phase and invasiveness of CSCs, and improve the sensitivity of CSCs to gemcitabine treatment. In addition, pharmacological inhibition of BRD9 significantly reduced the tumorigenesis in patient-derived xenografts mouse models and eliminated CSCs in tumors from pancreatic cancer patients. Mechanistically, inhibition of BRD9 disrupts enhancer-promoter looping and transcription of stemness genes in CSCs. CONCLUSIONS Collectively, the data suggest BRD9 as a novel therapeutic target for PDAC treatment via modulation of CSC stemness.
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Affiliation(s)
- Yuliang Feng
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Liuyang Cai
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Guangdong, China
| | - Martin Pook
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Feng Liu
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Chao-Hui Chang
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Mai Abdel Mouti
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Reshma Nibhani
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Stefania Militi
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - James Dunford
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Martin Philpott
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, Ohio; Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Guo-Chang Fan
- Departments of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Qi Liu
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Jun Qi
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Cheng Wang
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Wanzi Hong
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, China
| | - Hannah Morgan
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio
| | - Mingyang Wang
- College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
| | - Sakthivel Sadayappan
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio
| | - Anil G Jegga
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Department of Computer Science, University of Cincinnati College of Engineering, Cincinnati, Ohio
| | - Udo Oppermann
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Oxford Translational Myeloma Centre, Botnar Research Centre, Oxford, United Kingdom
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio.
| | - Wei Huang
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio.
| | - Lei Jiang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, China.
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
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Cao T, Ni R, Ding W, Ji X, Fan GC, Zhang Z, Peng T. Nicotinamide mononucleotide as a therapeutic agent to alleviate multi-organ failure in sepsis. J Transl Med 2023; 21:883. [PMID: 38057866 DOI: 10.1186/s12967-023-04767-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023] Open
Abstract
BACKGROUND Sepsis-caused multi-organ failure remains the major cause of morbidity and mortality in intensive care units with limited therapeutics. Nicotinamide mononucleotide (NMN), a precursor of nicotinamide adenine dinucleotide (NAD+), has been recently reported to be protective in sepsis; however, its therapeutic effects remain to be determined. This study sought to investigate the therapeutic effects of NMN in septic organ failure and its underlying mechanisms. METHODS Sepsis was induced by feces-injection-in-peritoneum in mice. NMN was given after an hour of sepsis onset. Cultured neutrophils, macrophages and endothelial cells were incubated with various agents. RESULTS We demonstrate that administration of NMN elevated NAD+ levels and reduced serum lactate levels, oxidative stress, inflammation, and caspase-3 activity in multiple organs of septic mice, which correlated with the attenuation of heart dysfunction, pulmonary microvascular permeability, liver injury, and kidney dysfunction, leading to lower mortality. The therapeutic effects of NMN were associated with lower bacterial burden in blood, and less ROS production in septic mice. NMN improved bacterial phagocytosis and bactericidal activity of macrophages and neutrophils while reducing the lipopolysaccharides-induced inflammatory response of macrophages. In cultured endothelial cells, NMN mitigated mitochondrial dysfunction, inflammation, apoptosis, and barrier dysfunction induced by septic conditions, all of which were offset by SIRT3 inhibition. CONCLUSION NAD+ repletion with NMN prevents mitochondrial dysfunction and restrains bacterial dissemination while limiting inflammatory damage through SIRT3 signaling in sepsis. Thus, NMN may represent a therapeutic option for sepsis.
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Affiliation(s)
- Ting Cao
- Institutes of Biology and Medical Sciences and Institute for Cardiovascular Science, Soochow University, Suzhou, 215123, China.
| | - Rui Ni
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada
- Department of Pathology and Laboratory Medicine, Western University, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
| | - Weimin Ding
- Institutes of Biology and Medical Sciences and Institute for Cardiovascular Science, Soochow University, Suzhou, 215123, China
| | - Xiaoyun Ji
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada
- Department of Pathology and Laboratory Medicine, Western University, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Zhuxu Zhang
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada
- Department of Pathology and Laboratory Medicine, Western University, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Medicine, Western University, London, ON, N6A 5W9, Canada
| | - Tianqing Peng
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada.
- Department of Pathology and Laboratory Medicine, Western University, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada.
- Department of Medicine, Western University, London, ON, N6A 5W9, Canada.
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Zhao H, Wang P, Wang X, Du W, Yang HH, Liu Y, Cui SN, Huang W, Peng T, Chen J, Gao C, Wang Y, Sadayappan S, Ma C, Fan Y, Wang C, Fan GC. Lipocalin 10 is essential for protection against inflammation-triggered vascular leakage by activating LDL receptor-related protein 2-slingshot homologue 1 signalling pathway. Cardiovasc Res 2023; 119:1981-1996. [PMID: 37392461 PMCID: PMC10681662 DOI: 10.1093/cvr/cvad105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/06/2023] [Accepted: 03/20/2023] [Indexed: 07/03/2023] Open
Abstract
AIMS Systemic inflammation occurs commonly during many human disease settings and increases vascular permeability, leading to organ failure, and lethal outcomes. Lipocalin 10 (Lcn10), a poorly characterized member of the lipocalin family, is remarkably altered in the cardiovascular system of human patients with inflammatory conditions. Nonetheless, whether Lcn10 regulates inflammation-induced endothelial permeability remains unknown. METHODS AND RESULTS Systemic inflammation models were induced using mice by injection of endotoxin lipopolysaccharide (LPS) or caecal ligation and puncture (CLP) surgery. We observed that the expression of Lcn10 was dynamically altered only in endothelial cells (ECs), but not in either fibroblasts or cardiomyocytes isolated from mouse hearts following the LPS challenge or CLP surgery. Using in vitro gain- and loss-of-function approaches and an in vivo global knockout mouse model, we discovered that Lcn10 negatively regulated endothelial permeability upon inflammatory stimuli. Loss of Lcn10 augmented vascular leakage, leading to severe organ damage and higher mortality following LPS challenge, compared to wild-type controls. By contrast, overexpression of Lcn10 in ECs displayed opposite effects. A mechanistic analysis revealed that both endogenous and exogenous elevation of Lcn10 in ECs could activate slingshot homologue 1 (Ssh1)-Cofilin signalling cascade, a key axis known to control actin filament dynamics. Accordingly, a reduced formation of stress fibre and increased generation of cortical actin band were exhibited in Lcn10-ECs, when compared to controls upon endotoxin insults. Furthermore, we identified that Lcn10 interacted with LDL receptor-related protein 2 (LRP2) in ECs, which acted as an upstream factor of the Ssh1-Confilin signalling. Finally, injection of recombinant Lcn10 protein into endotoxic mice showed therapeutic effects against inflammation-induced vascular leakage. CONCLUSION This study identifies Lcn10 as a novel regulator of EC function and illustrates a new link in the Lcn10-LRP2-Ssh1 axis to controlling endothelial barrier integrity. Our findings may provide novel strategies for the treatment of inflammation-related diseases.
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Affiliation(s)
- Hongyan Zhao
- Department of Critical Care Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Peng Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Wa Du
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Hui-Hui Yang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Yueying Liu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Shu-Nan Cui
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
- Department of Anesthesiology, Beijing Cancer Hospital, Peking University School of Oncology, Beijing, China
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Tianqing Peng
- The Centre for Critical Illness Research, Lawson Health Research Institute, London, Ontario, Canada
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Chen Gao
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Sakthivel Sadayappan
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Chengen Ma
- Department of Critical Care Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Chunting Wang
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
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Wu Z, Huang W, He X, Dutta S, Paul C, Fan GC, Kanisicak O, Xu M, Liang J, Wang Y. Myocardial IGF2R is a critical mediator of inflammation and fibrosis after ischemia-reperfusion injury. bioRxiv 2023:2023.04.21.537835. [PMID: 37131709 PMCID: PMC10153233 DOI: 10.1101/2023.04.21.537835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Ischemia-reperfusion (I/R) injury is a common occurrence in various surgical procedures used to treat heart diseases. However, the role of insulin-like growth factor 2 receptor (IGF2R) during the process of myocardial I/R remains unclear. Therefore, this study aims to investigate the expression, distribution, and functionality of IGF2R in various I/R-associated models (such as reoxygenation, revascularization, and heart transplant). Loss-of-function studies (including myocardial conditional knockout and CRISPR interference) were performed to clarify the role of IGF2R in I/R injuries. Following hypoxia, IGF2R expression increased, but this effect was reversed upon restoration of oxygen levels. Loss of myocardial IGF2R was found to enhance the cardiac contractile functions, and reduced cell infiltration or cardiac fibrosis of I/R mouse models compared to the genotype control. CRISPR-inhibition of IGF2R decreased cell apoptotic death under hypoxia. RNA sequencing analysis indicated that myocardial IGF2R played a critical role in regulating the inflammatory response, innate immune response, and apoptotic process following I/R. Integrated analysis of the mRNA profiling, pulldown assays, and mass spectrometry identified granulocyte-specific factors as potential targets of myocardial IGF2R in the injured heart. In conclusion, myocardial IGF2R emerges as a promising therapeutic target to ameliorate inflammation or fibrosis following I/R injuries.
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Yang HH, Wang X, Li S, Liu Y, Akbar R, Fan GC. Lipocalin family proteins and their diverse roles in cardiovascular disease. Pharmacol Ther 2023; 244:108385. [PMID: 36966973 PMCID: PMC10079643 DOI: 10.1016/j.pharmthera.2023.108385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/01/2023] [Accepted: 03/13/2023] [Indexed: 04/03/2023]
Abstract
The lipocalin (LCN) family members, a group of small extracellular proteins with 160-180 amino acids in length, can be detected in all kingdoms of life from bacteria to human beings. They are characterized by low similarity of amino acid sequence but highly conserved tertiary structures with an eight-stranded antiparallel β-barrel which forms a cup-shaped ligand binding pocket. In addition to bind small hydrophobic ligands (i.e., fatty acids, odorants, retinoids, and steroids) and transport them to specific cells, lipocalins (LCNs) can interact with specific cell membrane receptors to activate their downstream signaling pathways, and with soluble macromolecules to form the complex. Consequently, LCNs exhibit great functional diversity. Accumulating evidence has demonstrated that LCN family proteins exert multiple layers of function in the regulation of many physiological processes and human diseases (i.e., cancers, immune disorders, metabolic disease, neurological/psychiatric disorders, and cardiovascular disease). In this review, we firstly introduce the structural and sequence properties of LCNs. Next, six LCNs including apolipoprotein D (ApoD), ApoM, lipocalin 2 (LCN2), LCN10, retinol-binding protein 4 (RBP4), and Lipocalin-type prostaglandin D synthase (L-PGDS) which have been characterized so far are highlighted for their diagnostic/prognostic values and their potential effects on coronary artery disease and myocardial infarction injury. The roles of these 6 LCNs in cardiac hypertrophy, heart failure, diabetes-induced cardiac disorder, and septic cardiomyopathy are also summarized. Finally, their therapeutic potential for cardiovascular disease is discussed in each section.
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Affiliation(s)
- Hui-Hui Yang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Siru Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Yueying Liu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Rubab Akbar
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
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Saas P, Fan GC. Editorial: Hypoxia and inflammation: A two-way street. Front Immunol 2023; 14:1171116. [PMID: 36969222 PMCID: PMC10031103 DOI: 10.3389/fimmu.2023.1171116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/01/2023] [Indexed: 03/10/2023] Open
Affiliation(s)
- Philippe Saas
- EFS, Recherche et Développement, Grenoble, France
- Université Grenoble-Alpes, INSERM U1209, CNRS UMR 5309, Institute for Advanced Biosciences, Grenoble, France
- *Correspondence: Philippe Saas, ; Guo-Chang Fan,
| | - Guo-Chang Fan
- Department of Pharmacology & Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- *Correspondence: Philippe Saas, ; Guo-Chang Fan,
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9
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Feng Y, Cai L, Pook M, Liu F, Chang CH, Mouti MA, Nibhani R, Wu S, Deng S, Militi S, Dunford J, Philpott M, Fan Y, Fan GC, Liu Q, Qi J, Sadayappan S, Jegga AG, Oppermann U, Wang Y, Huang W, Jiang L, Pauklin S. BRD9-SMAD2/3 orchestrates stemness and tumorigenesis in pancreatic ductal adenocarcinoma. bioRxiv 2023:2023.03.02.530770. [PMID: 36909530 PMCID: PMC10002796 DOI: 10.1101/2023.03.02.530770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The dismal prognosis of pancreatic ductal adenocarcinoma (PDAC) is linked to the presence of pancreatic cancer stem-like cells (CSCs) that respond poorly to current chemotherapy regimens. By small molecule compound screening targeting 142 epigenetic enzymes, we identified that bromodomain-containing protein BRD9, a component of the BAF histone remodelling complex, is a key chromatin regulator to orchestrate the stemness of pancreatic CSCs via cooperating with the TGFβ/Activin-SMAD2/3 signalling pathway. Inhibition and genetic ablation of BDR9 block the self-renewal, cell cycle entry into G0 phase and invasiveness of CSCs, and improve the sensitivity of CSCs to gemcitabine treatment. In addition, pharmacological inhibition of BRD9 significantly reduced the tumorigenesis in patient-derived xenografts mouse models and eliminated CSCs in tumours from pancreatic cancer patients. Mechanistically, inhibition of BRD9 disrupts enhancer-promoter looping and transcription of stemness genes in CSCs. Collectively, the data suggest BRD9 as a novel therapeutic target for PDAC treatment via modulation of CSC stemness.
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10
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Ren L, Du W, Song D, Lu H, Hamblin MH, Wang C, Du C, Fan GC, Becker RC, Fan Y. Genetic ablation of diabetes-associated gene Ccdc92 reduces obesity and insulin resistance in mice. iScience 2023; 26:105769. [PMID: 36594018 PMCID: PMC9804112 DOI: 10.1016/j.isci.2022.105769] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 10/30/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Multiple genome-wide association studies (GWAS) have identified specific genetic variants in the coiled-coil domain containing 92 (CCDC92) locus that is associated with obesity and type 2 diabetes in humans. However, the biological function of CCDC92 in obesity and insulin resistance remains to be explored. Utilizing wild-type (WT) and Ccdc92 whole-body knockout (KO) mice, we found that Ccdc92 KO reduced obesity and increased insulin sensitivity under high-fat diet (HFD) conditions. Ccdc92 KO inhibited macrophage infiltration and fibrosis in white adipose tissue (WAT), suggesting Ccdc92 ablation protects against adipose tissue dysfunction. Ccdc92 deletion also increased energy expenditure and further attenuated hepatic steatosis in mice on an HFD. Ccdc92 KO significantly inhibited the inflammatory response and suppressed the NLR Family Pyrin Domain Containing 3 (NLRP3) inflammasome in WAT. Altogether, we demonstrated the critical role of CCDC92 in metabolism, constituting a potential target for treating obesity and insulin resistance.
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Affiliation(s)
- Lu Ren
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Wa Du
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Dan Song
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Haocheng Lu
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Milton H. Hamblin
- Tulane University Health Sciences Center, Tulane University, New Orleans, LA 70112, USA
- College of Pharmacy, Xavier University of Louisiana, New Orleans, LA 70125, USA
| | - Chenran Wang
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Chunying Du
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology & Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Richard C. Becker
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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11
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Ji XY, Zheng D, Ni R, Wang JX, Shao JQ, Vue Z, Hinton A, Song LS, Fan GC, Chakrabarti S, Su ZL, Peng TQ. Sustained over-expression of calpain-2 induces age-dependent dilated cardiomyopathy in mice through aberrant autophagy. Acta Pharmacol Sin 2022; 43:2873-2884. [PMID: 35986214 PMCID: PMC9622835 DOI: 10.1038/s41401-022-00965-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 07/24/2022] [Indexed: 11/09/2022] Open
Abstract
Calpains have been implicated in heart diseases. While calpain-1 has been detrimental to the heart, the role of calpain-2 in cardiac pathology remains controversial. In this study we investigated whether sustained over-expression of calpain-2 had any adverse effects on the heart and the underlying mechanisms. Double transgenic mice (Tg-Capn2/tTA) were generated, which express human CAPN2 restricted to cardiomyocytes. The mice were subjected to echocardiography at age 3, 6, 8 and 12 months, and their heart tissues and sera were collected for analyses. We showed that transgenic mice over-expressing calpain-2 restricted to cardiomyocytes had normal heart function with no evidence of cardiac pathological remodeling at age 3 months. However, they exhibited features of dilated cardiomyopathy including increased heart size, enlarged heart chambers and heart dysfunction from age 8 months; histological analysis revealed loss of cardiomyocytes replaced by myocardial fibrosis and cardiomyocyte hypertrophy in transgenic mice from age 8 months. These cardiac alterations closely correlated with aberrant autophagy evidenced by significantly increased LC3BII and p62 protein levels and accumulation of autophagosomes in the hearts of transgenic mice. Notably, injection of 3-methyladenine, a well-established inhibitor of autophagy (30 mg/kg, i.p. once every 3 days starting from age 6 months for 2 months) prevented aberrant autophagy, attenuated myocardial injury and improved heart function in the transgenic mice. In cultured cardiomyocytes, over-expression of calpain-2 blocked autophagic flux by impairing lysosomal function. Furthermore, over-expression of calpain-2 resulted in lower levels of junctophilin-2 protein in the heart of transgenic mice and in cultured cardiomyocytes, which was attenuated by 3-methyladenine. In addition, blockade of autophagic flux by bafilomycin A (100 nM) induced a reduction of junctophilin-2 protein in cardiomyocytes. In summary, transgenic over-expression of calpain-2 induces age-dependent dilated cardiomyopathy in mice, which may be mediated through aberrant autophagy and a reduction of junctophilin-2. Thus, a sustained increase in calpain-2 may be detrimental to the heart.
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Affiliation(s)
- Xiao-Yun Ji
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, N6A 5C1, Canada
| | - Dong Zheng
- Centre of Clinical Laboratory, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Rui Ni
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, N6A 5C1, Canada
| | - Jin-Xi Wang
- Division of Cardiovascular Medicine, Department of Internal Medicine, Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Jian-Qiang Shao
- Central Microscopy Research Facility, University of Iowa, Iowa City, IA, 52242, USA
| | - Zer Vue
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Antentor Hinton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Long-Sheng Song
- Division of Cardiovascular Medicine, Department of Internal Medicine, Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Subrata Chakrabarti
- Department of Pathology and Laboratory Medicine, Western University, London, ON, N6A 5C1, Canada
| | - Zhao-Liang Su
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China.
| | - Tian-Qing Peng
- Lawson Health Research Institute, London Health Sciences Centre, London, ON, N6A 5W9, Canada.
- Department of Pathology and Laboratory Medicine, Western University, London, ON, N6A 5C1, Canada.
- Department of Medicine, Western University, London, ON, N6A 5W9, Canada.
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12
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Cao T, Ni R, Ding W, Ji X, Li L, Liao G, Lu Y, Fan GC, Zhang Z, Peng T. MLKL-mediated necroptosis is a target for cardiac protection in mouse models of type-1 diabetes. Cardiovasc Diabetol 2022; 21:165. [PMID: 36030201 PMCID: PMC9420252 DOI: 10.1186/s12933-022-01602-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/16/2022] [Indexed: 11/18/2022] Open
Abstract
Background Cardiomyocyte death contributes to cardiac pathology of diabetes. Studies have shown that the RIPK3/MLKL necroptosis signaling is activated in diabetic hearts. Deletion of RIPK3 was reported to attenuate myocardial injury and heart dysfunction in streptozocin (STZ)-induced diabetic mice, suggesting a potential role of necroptosis in diabetic cardiomyopathy. This study characterized cardiomyocyte necroptosis in diabetic hearts and investigated whether MLKL-mediated necroptosis is a target for cardiac protection in diabetes. Methods Type 1 diabetes was induced in RIPK3 knockout, MLKL knockout and wild-type mice. Akita Type-1 diabetic mice were injected with shRNA for MLKL. Myocardial function was assessed by echocardiography. Immuno-histological analyses determined cardiomyocyte death and fibrosis in the heart. Cultured adult mouse cardiomyocytes were incubated with high glucose in the presence of various drugs. Cell death and phosphorylation of RIPK3 and MLKL were analysed. Results We showed that the levels of phosphorylated RIPK3 and MLKL were higher in high glucose-stimulated cardiomyocytes and hearts of STZ-induced type-1 diabetic mice, akita mice and type-1 diabetic monkeys when compared to non-diabetic controls. Inhibition of RIPK3 by its pharmacological inhibitor or gene deletion, or MLKL deletion prevented high glucose-induced MLKL phosphorylation and attenuated necroptosis in cardiomyocytes. In STZ-induced type-1 diabetic mice, cardiomyocyte necroptosis was present along with elevated cardiac troponin I in serum and MLKL oligomerization, and co-localized with phosphorylated MLKL. Deletion of RIPK3 or MLKL prevented MLKL phosphorylation and cardiac necroptosis, attenuated serum cardiac troponin I levels, reduced myocardial collagen deposition and improved myocardial function in STZ-injected mice. Additionally, shRNA-mediated down-regulation of MLKL reduced cardiomyocyte necroptosis in akita mice. Interestingly, incubation with anti-diabetic drugs (empagliflozin and metformin) prevented phosphorylation of RIPK3 and MLKL, and reduced cell death in high glucose-induced cardiomyocytes. Conclusions We have provided evidence that cardiomyocyte necroptosis is present in diabetic hearts and that MLKL-mediated cardiomyocyte necroptosis contributes to diabetic cardiomyopathy. These findings highlight MLKL-mediated necroptosis as a target for cardiac protection in diabetes. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-022-01602-9.
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Affiliation(s)
- Ting Cao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Rui Ni
- Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 5W9, Canada.,Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Weimin Ding
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Xiaoyun Ji
- Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 5W9, Canada.,Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Lan Li
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, and Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Guangneng Liao
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, and Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, and Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Zhuxu Zhang
- Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 5W9, Canada.,Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada
| | - Tianqing Peng
- Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 5W9, Canada. .,Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada. .,Department of Medicine, Western University, London, ON, Canada.
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13
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Li Q, Li Y, Huang W, Wang X, Liu Z, Chen J, Fan Y, Peng T, Sadayappan S, Wang Y, Fan GC. Loss of Lipocalin 10 Exacerbates Diabetes-Induced Cardiomyopathy via Disruption of Nr4a1-Mediated Anti-Inflammatory Response in Macrophages. Front Immunol 2022; 13:930397. [PMID: 35757735 PMCID: PMC9226549 DOI: 10.3389/fimmu.2022.930397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Metabolic disorders (i.e., hyperglycemia, hyperlipidemia, and hyperinsulinemia) cause increased secretion of inflammatory cytokines/chemokines, leading to gradual loss of cardiac resident macrophage population and increased accumulation of inflammatory monocytes/macrophages in the heart. Such self-perpetuating effect may contribute to the development of cardiomyopathy during diabetes. Recent meta-analysis data reveal that lipocalin 10 (Lcn10) is significantly downregulated in cardiac tissue of patients with heart failure but is increased in the blood of septic patients. However, the functional role of Lcn10 in cardiac inflammation triggered by metabolic disorders has never been investigated. In this study, we demonstrate that the expression of Lcn10 in macrophages was significantly decreased under multiple metabolic stress conditions. Furthermore, Lcn10-null macrophages exhibited pro-inflammatory phenotype in response to inflammation stimuli. Next, using a global Lcn10-knockout (KO) mouse model to induce type-2 diabetes (T2D), we observed that loss of Lcn10 promoted more pro-inflammatory macrophage infiltration into the heart, compared to controls, leading to aggravated insulin resistance and impaired cardiac function. Similarly, adoptive transfer of Lcn10-KO bone marrow cells into X-ray irradiated mice displayed higher ratio of pro-/anti-inflammatory macrophages in the heart and worsened cardiac function than those mice received wild-type (WT) bone marrows upon T2D conditions. Mechanistically, RNA-sequencing analysis showed that Nr4a1, a nuclear receptor known to have potent anti-inflammatory effects, is involved in Lcn10-mediated macrophage activation. Indeed, we found that nuclear translocation of Nr4a1 was disrupted in Lcn10-KO macrophages upon stimulation with LPS + IFNγ. Accordingly, treatment with Cytosporone B (CsnB), an agonist of Nr4a1, attenuated the pro-inflammatory response in Lcn10-null macrophages and partially improved cardiac function in Lcn10-KO diabetic mice. Together, these findings indicate that loss of Lcn10 skews macrophage polarization to pro-inflammatory phenotype and aggravates cardiac dysfunction during type-2 diabetes through the disruption of Nr4a1-mediated anti-inflammatory signaling pathway in macrophages. Therefore, reduction of Lcn10 expression observed in diabetic macrophages may be responsible for the pathogenesis of diabetes-induced cardiac dysfunction. It suggests that Lcn10 might be a potential therapeutic factor for diabetic heart failure.
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Affiliation(s)
- Qianqian Li
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, United States
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Zhenling Liu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Tianqing Peng
- The Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada
| | - Sakthivel Sadayappan
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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14
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Feng Y, Cai L, Hong W, Zhang C, Tan N, Wang M, Wang C, Liu F, Wang X, Ma J, Gao C, Kumar M, Mo Y, Geng Q, Luo C, Lin Y, Chen H, Wang SY, Watson MJ, Jegga AG, Pedersen RA, Fu JD, Wang ZV, Fan GC, Sadayappan S, Wang Y, Pauklin S, Huang F, Huang W, Jiang L. Rewiring of 3D Chromatin Topology Orchestrates Transcriptional Reprogramming and the Development of Human Dilated Cardiomyopathy. Circulation 2022; 145:1663-1683. [PMID: 35400201 PMCID: PMC9251830 DOI: 10.1161/circulationaha.121.055781] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Transcriptional reconfiguration is central to heart failure, the most common cause of which is dilated cardiomyopathy (DCM). The effect of 3-dimensional chromatin topology on transcriptional dysregulation and pathogenesis in human DCM remains elusive. METHODS We generated a compendium of 3-dimensional epigenome and transcriptome maps from 101 biobanked human DCM and nonfailing heart tissues through highly integrative chromatin immunoprecipitation (H3K27ac [acetylation of lysine 27 on histone H3]), in situ high-throughput chromosome conformation capture, chromatin immunoprecipitation sequencing, assay for transposase-accessible chromatin using sequencing, and RNA sequencing. We used human induced pluripotent stem cell-derived cardiomyocytes and mouse models to interrogate the key transcription factor implicated in 3-dimensional chromatin organization and transcriptional regulation in DCM pathogenesis. RESULTS We discovered that the active regulatory elements (H3K27ac peaks) and their connectome (H3K27ac loops) were extensively reprogrammed in DCM hearts and contributed to transcriptional dysregulation implicated in DCM development. For example, we identified that nontranscribing NPPA-AS1 (natriuretic peptide A antisense RNA 1) promoter functions as an enhancer and physically interacts with the NPPA (natriuretic peptide A) and NPPB (natriuretic peptide B) promoters, leading to the cotranscription of NPPA and NPPB in DCM hearts. We revealed that DCM-enriched H3K27ac loops largely resided in conserved high-order chromatin architectures (compartments, topologically associating domains) and their anchors unexpectedly had equivalent chromatin accessibility. We discovered that the DCM-enriched H3K27ac loop anchors exhibited a strong enrichment for HAND1 (heart and neural crest derivatives expressed 1), a key transcription factor involved in early cardiogenesis. In line with this, its protein expression was upregulated in human DCM and mouse failing hearts. To further validate whether HAND1 is a causal driver for the reprogramming of enhancer-promoter connectome in DCM hearts, we performed comprehensive 3-dimensional epigenome mappings in human induced pluripotent stem cell-derived cardiomyocytes. We found that forced overexpression of HAND1 in human induced pluripotent stem cell-derived cardiomyocytes induced a distinct gain of enhancer-promoter connectivity and correspondingly increased the expression of their connected genes implicated in DCM pathogenesis, thus recapitulating the transcriptional signature in human DCM hearts. Electrophysiology analysis demonstrated that forced overexpression of HAND1 in human induced pluripotent stem cell-derived cardiomyocytes induced abnormal calcium handling. Furthermore, cardiomyocyte-specific overexpression of Hand1 in the mouse hearts resulted in dilated cardiac remodeling with impaired contractility/Ca2+ handling in cardiomyocytes, increased ratio of heart weight/body weight, and compromised cardiac function, which were ascribed to recapitulation of transcriptional reprogramming in DCM. CONCLUSIONS This study provided novel chromatin topology insights into DCM pathogenesis and illustrated a model whereby a single transcription factor (HAND1) reprograms the genome-wide enhancer-promoter connectome to drive DCM pathogenesis.
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Affiliation(s)
- Yuliang Feng
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford Old Road, Headington, Oxford, OX3 7LD, UK
- These authors contributed equally to this work
| | - Liuyang Cai
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR 999077, China
- These authors contributed equally to this work
| | - Wanzi Hong
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
- These authors contributed equally to this work
| | - Chunxiang Zhang
- Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan 646000, China
- These authors contributed equally to this work
| | - Ning Tan
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
| | - Mingyang Wang
- College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Cheng Wang
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin 2, Ireland D02 VF25
| | - Feng Liu
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford Old Road, Headington, Oxford, OX3 7LD, UK
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Jianyong Ma
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Chen Gao
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Mohit Kumar
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH 45236, USA
| | - Yuanxi Mo
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
| | - Qingshan Geng
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
| | - Changjun Luo
- Institute of Cardiovascular Diseases, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Yan Lin
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
| | - Haiyang Chen
- National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Shuang-Yin Wang
- Department of Immunology, Weizmann Institute of Science, Rehovot WR35+R8, Israel
| | - Michael J. Watson
- Department of Surgery, Cardiovascular & Thoracic, Duke University, Durham, NC 27710, USA
| | - Anil G. Jegga
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
- Department of Computer Science, University of Cincinnati College of Engineering, Cincinnati, OH 45221, USA
| | - Roger A. Pedersen
- Department of OB-GYN/Reproductive, Perinatal and Stem Cell Biology Research, Stanford University, Stanford, California, USA
| | - Ji-dong Fu
- Departments of Physiology and Cell Biology, the Dorothy M. Davis Heart and Lung Research Institute, Frick Center for Heart Failure and Arrhythmia, the Ohio State University, Columbus, OH 43210, USA
| | - Zhao V. Wang
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA, 75390-8573
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Sakthivel Sadayappan
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH 45236, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford Old Road, Headington, Oxford, OX3 7LD, UK
| | - Feng Huang
- Institute of Cardiovascular Diseases, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Lei Jiang
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
- Lead contact
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15
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Zhao H, Wang P, Wang X, Li Y, Li Q, Chen J, Ma C, Wang C, Fan GC. Abstract 386: Lipocalin 10 Protects Against Sepsis-triggered Vascular Leakage Through Activation Of The Ssh1-cofilin Signaling Pathway. Arterioscler Thromb Vasc Biol 2022. [DOI: 10.1161/atvb.42.suppl_1.386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Background:
The increased vascular leakage seen in sepsis patients is well-recognized to be responsible for sepsis-triggered organ failure and patient mortality. Prior work suggests that lipocalin 10 (Lcn10), a member of the lipocalin superfamily, is significantly downregulated in the blood of non-survival septic patients when comparing to the survival group. Nonetheless, whether Lcn10 affects endothelial barrier integrity in sepsis remains unknown.
Methods and Results:
First, we observed that the expression of Lcn10 was remarkably down-regulated in the hearts of both endotoxin LPS- and cecal ligation/puncture (CLP)-induced septic mice, compared to their controls. Interestingly, further analysis of Lcn10 expression in different cell types isolated from LPS- and CLP-hearts showed that reduction of Lcn10 occurred only in cardiac endothelial cells (ECs) but not in cardiomyocytes or fibroblasts. Using a global Lcn10-knockout (KO) mouse model, we found that loss of Lcn10 greatly increased vascular permeability, which correlated with more severe cardiac depression and higher mortality following LPS challenge or CLP surgery, compared to LPS- or CLP-treated wild-type (WT) mice. By contrast,
in vitro
overexpression of Lcn10 in ECs provided greater resistance to LPS-caused monolayer leak, compared to control cells. A mechanistic analysis by RNA-sequencing and RT-qPCR revealed that both endogenous and exogenous elevation of Lcn10 in ECs could greatly upregulate slingshot homolog 1 (Ssh1) expression. Ssh1 is a phosphatase known to activate Cofilin, a key actin-binding protein that plays an essential role in controlling actin filament dynamics. Accordingly, phosphorylated Cofilin levels were significantly reduced and thereby, reorganized F-actin to cortical actin for stabilizing tight junction molecules in Lcn10-treated ECs, compared to control cells. Finally, knockdown of Ssh1 in ECs by siRNA greatly offsets Lcn10-induced reduction of monolayer leakage upon LPS insult.
Conclusions:
Endothelial Lcn10 is critical for protecting against sepsis-induced cardiovascular leakage, and its underlying mechanism involves the activation of Ssh1-Cofilin pathway. Our study suggests that Lcn10 could be a novel regulator of vascular barrier integrity.
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Affiliation(s)
- Hongyan Zhao
- Shandong Univ Cheeloo College of Medicine, Jinan, China
| | - Peng Wang
- Shandong Provincial Hosp Affiliated to Shandong First Med Univ, Jinan, China
| | | | - Yutian Li
- UNIV OF CINCINNATI COLLEGE OF MEDIC, Cincinnati, OH
| | | | | | - Chengen Ma
- Shandong Univ Cheeloo College of Medicine, Jinan, China
| | - Chunting Wang
- Shandong Provincial Hosp Affiliated to Shandong First Med Univ, Jinan, China
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16
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Zhang M, Zhong H, Cao T, Huang Y, Ji X, Fan GC, Peng T. Gamma-Aminobutyrate Transaminase Protects against Lipid Overload-Triggered Cardiac Injury in Mice. Int J Mol Sci 2022; 23:ijms23042182. [PMID: 35216295 PMCID: PMC8874535 DOI: 10.3390/ijms23042182] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/10/2022] [Accepted: 02/13/2022] [Indexed: 12/26/2022] Open
Abstract
Lipid overload contributes to cardiac complications of diabetes and obesity. However, the underlying mechanisms remain obscure. This study investigates the role of gamma-aminobutyrate transaminase (ABAT), the key enzyme involved in the catabolism of γ-aminobutyric acid (GABA), in lipid overload-induced cardiac injury. Microarray revealed a down-regulation of ABAT mRNA expression in high fat diet (HFD)-fed mouse hearts, which correlated with a reduction in ABAT protein level and its GABA catabolic activity. Transgenic mice with cardiomyocyte-specific ABAT over-expression (Tg-ABAT/tTA) were generated to determine the role of ABAT in lipid overload-induced cardiac injury. Feeding with a HFD to control mice for 4 months reduced ATP production and the mitochondrial DNA copy number, and induced myocardial oxidative stress, hypertrophy, fibrosis and dysfunction. Such pathological effects of HFD were mitigated by ABAT over-expression in Tg-ABAT/tTA mice. In cultured cardiomyocytes, palmitate increased mitochondrial ROS production, depleted ATP production and promoted apoptosis, all of which were attenuated by ABAT over-expression. With the inhibition of ABAT’s GABA catabolic activity, the protective effects of ABAT remained unchanged in palmitate-induced cardiomyocytes. Thus, ABAT protects the mitochondrial function in defending the heart against lipid overload-induced injury through mechanisms independent of its GABA catabolic activity, and may represent a new therapeutic target for lipid overload-induced cardiac injury.
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Affiliation(s)
- Mengxiao Zhang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China; (M.Z.); (H.Z.); (T.C.); (Y.H.)
- School of Pharmacy, Bengbu Medical College, Bengbu 233000, China
- Department of Pathology and Laboratory Medicine, Western University, London, ON N6A 5C1, Canada;
| | - Huiting Zhong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China; (M.Z.); (H.Z.); (T.C.); (Y.H.)
| | - Ting Cao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China; (M.Z.); (H.Z.); (T.C.); (Y.H.)
| | - Yifan Huang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China; (M.Z.); (H.Z.); (T.C.); (Y.H.)
| | - Xiaoyun Ji
- Department of Pathology and Laboratory Medicine, Western University, London, ON N6A 5C1, Canada;
- Lawson Health Research Institute, London Health Sciences Centre, London, ON N6A 5W9, Canada
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA;
| | - Tianqing Peng
- Department of Pathology and Laboratory Medicine, Western University, London, ON N6A 5C1, Canada;
- Lawson Health Research Institute, London Health Sciences Centre, London, ON N6A 5W9, Canada
- Department of Medicine, Western University, London, ON N6A 5W9, Canada
- VRLA6-140, 800 Commissioners Road, London, ON N6A 5W9, Canada
- Correspondence: ; Tel.: +1-519-6858500-55441
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17
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Jiang L, Liang J, Huang W, Ma J, Park KH, Wu Z, Chen P, Zhu H, Ma JJ, Cai W, Paul C, Niu L, Fan GC, Wang HS, Kanisicak O, Xu M, Wang Y. CRISPR activation of endogenous genes reprograms fibroblasts into cardiovascular progenitor cells for myocardial infarction therapy. Mol Ther 2022; 30:54-74. [PMID: 34678511 PMCID: PMC8753567 DOI: 10.1016/j.ymthe.2021.10.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/27/2021] [Accepted: 10/18/2021] [Indexed: 01/07/2023] Open
Abstract
Fibroblasts can be reprogrammed into cardiovascular progenitor cells (CPCs) using transgenic approaches, although the underlying mechanism remains unclear. We determined whether activation of endogenous genes such as Gata4, Nkx2.5, and Tbx5 can rapidly establish autoregulatory loops and initiate CPC generation in adult extracardiac fibroblasts using a CRISPR activation system. The induced fibroblasts (>80%) showed phenotypic changes as indicated by an Nkx2.5 cardiac enhancer reporter. The progenitor characteristics were confirmed by colony formation and expression of cardiovascular genes. Cardiac sphere induction segregated the early and late reprogrammed cells that can generate functional cardiomyocytes and vascular cells in vitro. Therefore, they were termed CRISPR-induced CPCs (ciCPCs). Transcriptomic analysis showed that cell cycle and heart development pathways were important to accelerate CPC formation during the early reprogramming stage. The CRISPR system opened the silenced chromatin locus, thereby allowing transcriptional factors to access their own promoters and eventually forming a positive feedback loop. The regenerative potential of ciCPCs was assessed after implantation in mouse myocardial infarction models. The engrafted ciCPCs differentiated into cardiovascular cells in vivo but also significantly improved contractile function and scar formation. In conclusion, multiplex gene activation was sufficient to drive CPC reprogramming, providing a new cell source for regenerative therapeutics.
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Affiliation(s)
- Lin Jiang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Jialiang Liang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA.
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Jianyong Ma
- Department of Pharmacology and Systems Physiology, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Ki Ho Park
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Zhichao Wu
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Peng Chen
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Hua Zhu
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Jian-Jie Ma
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Wenfeng Cai
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Christian Paul
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Liang Niu
- Division of Biostatistics and Bioinformatics, Department of Environmental Health, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Hong-Sheng Wang
- Department of Pharmacology and Systems Physiology, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Onur Kanisicak
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Meifeng Xu
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA.
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18
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Abstract
ABSTRACT Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been spread around the world and is currently affecting global public health. Clinical evidence indicates that the elevated number of peripheral neutrophils and higher ratio of neutrophils-to-lymphocytes are correlated with severe outcomes in COVID-19 patients, suggesting the possible immunopathological role of neutrophils during SARS-CoV-2 infection. As an abundant innate immune cell type, neutrophils are well known for their contributions to antimicrobial defense. However, their dysfunction is also associated with different inflammatory signatures during the pathogenesis of infection. Herein, in this mini-review, we summarize the recent progress on the potential role of neutrophils during COVID-19-associated inflammatory responses. In particular, we highlight the interactions between neutrophils and viruses as well as the relationship of neutrophils with cytokine storm and thrombosis in COVID-19 patients. Lastly, we discuss the importance of neutrophils as potential therapeutic targets for COVID-19.
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Affiliation(s)
- Shu-Nan Cui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Anesthesiology, Peking University Cancer Hospital and Institute, Beijing, China
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Hong-Yu Tan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Anesthesiology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
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19
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Zheng D, Cao T, Zhang LL, Fan GC, Qiu J, Peng TQ. Targeted inhibition of calpain in mitochondria alleviates oxidative stress-induced myocardial injury. Acta Pharmacol Sin 2021; 42:909-920. [PMID: 32968209 PMCID: PMC8149722 DOI: 10.1038/s41401-020-00526-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 09/03/2020] [Indexed: 12/14/2022] Open
Abstract
The protein levels and activities of calpain-1 and calpain-2 are increased in cardiac mitochondria under pathological conditions including ischemia, diabetes, and sepsis, and transgenic overexpression of mitochondrial-targeted calpain-1 induces dilated heart failure, which underscores an important role of increased calpain in mitochondria in mediating myocardial injury. However, it remains to be determined whether selective inhibition of calpain in mitochondria protects the heart under pathological conditions. In this study, we generated transgenic mice overexpressing mitochondrial-targeted calpastatin in cardiomyocytes. Their hearts were isolated and subjected to global ischemia/reperfusion. Hyperglycemia was induced in the transgenic mice by injections of STZ. We showed that transgenic calpastatin was expressed exclusively in mitochondria isolated from their hearts but not from other organs including skeletal muscle and lung tissues. Transgenic overexpression of mitochondrial-targeted calpastatin significantly attenuated mitochondrial oxidative stress and cell death induced by global ischemia/reperfusion in isolated hearts, and ameliorated mitochondrial oxidative stress, cell death, myocardial remodeling and dysfunction in STZ-treated transgenic mice. The protective effects of mitochondrial-targeted calpastatin were correlated with increased ATP5A1 protein expression and ATP synthase activity in isolated hearts subjected to global ischemia/reperfusion and hearts of STZ-treated transgenic mice. In cultured rat myoblast H9c2 cells, overexpression of mitochondrial-targeted calpastatin maintained the protein levels of ATP5A1 and ATP synthase activity, prevented mitochondrial ROS production and decreased cell death following hypoxia/reoxygenation, whereas upregulation of ATP5A1 or scavenging of mitochondrial ROS by mito-TEMPO abrogated mitochondrial ROS production and decreased cell death. These results confirm the role of calpain in myocardial injury, suggesting that selective inhibition of calpain in myocardial mitochondria by mitochondrial-targeted calpastatin is an effective strategy for alleviating myocardial injury and dysfunction in cardiac pathologies.
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Affiliation(s)
- Dong Zheng
- Centre of Clinical Laboratory, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China
| | - Ting Cao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China
| | - Lu-Lu Zhang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Jun Qiu
- Centre of Clinical Laboratory, the First Affiliated Hospital of Soochow University, Suzhou 215006, China.
| | - Tian-Qing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China.
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20
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Li Y, Deng S, Wang X, Huang W, Chen J, Robbins N, Mu X, Essandoh K, Peng T, Jegga AG, Rubinstein J, Adams DE, Wang Y, Peng J, Fan GC. Sectm1a deficiency aggravates inflammation-triggered cardiac dysfunction through disruption of LXRα signalling in macrophages. Cardiovasc Res 2021; 117:890-902. [PMID: 32170929 PMCID: PMC8453795 DOI: 10.1093/cvr/cvaa067] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/17/2020] [Accepted: 03/12/2020] [Indexed: 01/03/2023] Open
Abstract
AIMS Cardiac dysfunction is a prevalent comorbidity of disrupted inflammatory homeostasis observed in conditions such as sepsis (acute) or obesity (chronic). Secreted and transmembrane protein 1a (Sectm1a) has previously been implicated to regulate inflammatory responses, yet its role in inflammation-associated cardiac dysfunction is virtually unknown. METHODS AND RESULTS Using the CRISPR/Cas9 system, we generated a global Sectm1a-knockout (KO) mouse model and observed significantly increased mortality and cardiac injury after lipopolysaccharide (LPS) injection, when compared with wild-type (WT) control. Further analysis revealed significantly increased accumulation of inflammatory macrophages in hearts of LPS-treated KO mice. Accordingly, ablation of Sectm1a remarkably increased inflammatory cytokines levels both in vitro [from bone marrow-derived macrophages (BMDMs)] and in vivo (in serum and myocardium) after LPS challenge. RNA-sequencing results and bioinformatics analyses showed that the most significantly down-regulated genes in KO-BMDMs were modulated by LXRα, a nuclear receptor with robust anti-inflammatory activity in macrophages. Indeed, we identified that the nuclear translocation of LXRα was disrupted in KO-BMDMs when treated with GW3965 (LXR agonist), resulting in higher levels of inflammatory cytokines, compared to GW3965-treated WT-cells. Furthermore, using chronic inflammation model of high-fat diet (HFD) feeding, we observed that infiltration of inflammatory monocytes/macrophages into KO-hearts were greatly increased and accordingly, worsened cardiac function, compared to WT-HFD controls. CONCLUSION This study defines Sectm1a as a new regulator of inflammatory-induced cardiac dysfunction through modulation of LXRα signalling in macrophages. Our data suggest that augmenting Sectm1a activity may be a potential therapeutic approach to resolve inflammation and associated cardiac dysfunction.
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Affiliation(s)
- Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Shan Deng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children’s Hospital, Cincinnati, OH 45267, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Nathan Robbins
- Department of Internal Medicine, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Kobina Essandoh
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, London, ON N6A 4G5, Canada
| | - Anil G Jegga
- Division of Biomedical Informatics, Cincinnati Children’s Hospital, Cincinnati, OH 45267, USA
| | - Jack Rubinstein
- Department of Internal Medicine, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - David E Adams
- Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
| | - Jiangtong Peng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0575, USA
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21
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Wang P, Mu X, Zhao H, Li Y, Wang L, Wolfe V, Cui SN, Wang X, Peng T, Zingarelli B, Wang C, Fan GC. Administration of GDF3 Into Septic Mice Improves Survival via Enhancing LXRα-Mediated Macrophage Phagocytosis. Front Immunol 2021; 12:647070. [PMID: 33679812 PMCID: PMC7925632 DOI: 10.3389/fimmu.2021.647070] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/26/2021] [Indexed: 12/26/2022] Open
Abstract
The defective eradication of invading pathogens is a major cause of death in sepsis. As professional phagocytic cells, macrophages actively engulf/kill microorganisms and play essential roles in innate immune response against pathogens. Growth differentiation factor 3 (GDF3) was previously implicated as an important modulator of inflammatory response upon acute sterile injury. In this study, administration of recombinant GDF3 protein (rGDF3) either before or after CLP surgery remarkably improved mouse survival, along with significant reductions in bacterial load, plasma pro-inflammatory cytokine levels, and organ damage. Notably, our in vitro experiments revealed that rGDF3 treatment substantially promoted macrophage phagocytosis and intracellular killing of bacteria in a dose-dependent manner. Mechanistically, RNA-seq analysis results showed that CD5L, known to be regulated by liver X receptor α (LXRα), was the most significantly upregulated gene in rGDF3-treated macrophages. Furthermore, we observed that rGDF3 could promote LXRα nuclear translocation and thereby, augmented phagocytosis activity in macrophages, which was similar as LXRα agonist GW3965 did. By contrast, pre-treating macrophages with LXRα antagonist GSK2033 abolished beneficial effects of rGDF3 in macrophages. In addition, rGDF3 treatment failed to enhance bacteria uptake and killing in LXRα-knockout (KO) macrophages. Taken together, these results uncover that GDF3 may represent a novel mediator for controlling bacterial infection.
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Affiliation(s)
- Peng Wang
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Hongyan Zhao
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Department of Critical Care Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Lu Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Vivian Wolfe
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Shu-Nan Cui
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Department of Anesthesiology, Beijing Cancer Hospital, Peking University School of Oncology, Beijing, China
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Tianqing Peng
- The Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada
| | - Basilia Zingarelli
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Chunting Wang
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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22
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Abstract
ABSTRACT As an integral component of cardiac tissue, macrophages are critical for cardiac development, adult heart homeostasis, as well as cardiac healing. One fundamental function of macrophages involves the clearance of dying cells or debris, a process termed efferocytosis. Current literature primarily pays attention to the impact of efferocytosis on apoptotic cells. However, emerging evidence suggests that necrotic cells and their released cellular debris can also be removed by cardiac macrophages through efferocytosis. Importantly, recent studies have demonstrated that macrophage efferocytosis plays an essential role in cardiac pathophysiology and repair. Therefore, understanding macrophage efferocytosis would provide valuable insights on cardiac health, and may offer new therapeutic strategies for the treatment of patients with heart failure. In this review, we first summarize the molecular signals that are associated with macrophage efferocytosis of apoptotic and necrotic cells, and then discuss how the linkage of efferocytosis to the resolution of inflammation affects cardiac function and recovery under normal and diseased conditions. Lastly, we highlight new discoveries related to the effects of macrophage efferocytosis on cardiac injury and repair.
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Affiliation(s)
- Li Yutian
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Li Qianqian
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Pharmaceutical Science, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
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23
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Abstract
ABSTRACT Macrophage, as an integral component of the immune system and the first responder to local damage, is on the front line of defense against infection. Over the past century, the prevailing view of macrophage origin states that all macrophage populations resided in tissues are terminally differentiated and replenished by monocytes from bone-marrow progenitors. Nonetheless, this theory has been reformed by ground-breaking discoveries from the past decades. It is now believed that tissue-resident macrophages (TRMs) are originated from the embryonic precursors and seeded in tissue prenatally. They can replenish via self-renewal throughout the lifespan. Indeed, recent studies have demonstrated that tissue-resident macrophages should not be classified by the over-simplified macrophage polarization (M1/M2) dogma during inflammation. Moreover, multiple lines of evidence have indicated that tissue-resident macrophages play critical roles in maintaining tissue homeostasis and facilitating tissue repair through controlling infection and resolving inflammation. In this review, we summarize the properties of resident macrophages in the lung, spleen, and heart, and further highlight the impact of TRM populations on inflammation control and tissue repair. We also discuss the potential role of local proliferation in maintaining a physiologically stable TRM pool in response to acute inflammation.
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Affiliation(s)
- Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
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24
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Liang L, Li H, Cao T, Qu L, Zhang L, Fan GC, Greer PA, Li J, Jones DL, Peng T. Calpain activation mediates microgravity-induced myocardial abnormalities in mice via p38 and ERK1/2 MAPK pathways. J Biol Chem 2020; 295:16840-16851. [PMID: 32989050 PMCID: PMC7864076 DOI: 10.1074/jbc.ra119.011890] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 09/22/2020] [Indexed: 12/26/2022] Open
Abstract
The human cardiovascular system has adapted to function optimally in Earth's 1G gravity, and microgravity conditions cause myocardial abnormalities, including atrophy and dysfunction. However, the underlying mechanisms linking microgravity and cardiac anomalies are incompletely understood. In this study, we investigated whether and how calpain activation promotes myocardial abnormalities under simulated microgravity conditions. Simulated microgravity was induced by tail suspension in mice with cardiomyocyte-specific deletion of Capns1, which disrupts activity and stability of calpain-1 and calpain-2, and their WT littermates. Tail suspension time-dependently reduced cardiomyocyte size, heart weight, and myocardial function in WT mice, and these changes were accompanied by calpain activation, NADPH oxidase activation, and oxidative stress in heart tissues. The effects of tail suspension were attenuated by deletion of Capns1 Notably, the protective effects of Capns1 deletion were associated with the prevention of phosphorylation of Ser-345 on p47 phox and attenuation of ERK1/2 and p38 activation in hearts of tail-suspended mice. Using a rotary cell culture system, we simulated microgravity in cultured neonatal mouse cardiomyocytes and observed decreased total protein/DNA ratio and induced calpain activation, phosphorylation of Ser-345 on p47 phox , and activation of ERK1/2 and p38, all of which were prevented by calpain inhibitor-III. Furthermore, inhibition of ERK1/2 or p38 attenuated phosphorylation of Ser-345 on p47 phox in cardiomyocytes under simulated microgravity. This study demonstrates for the first time that calpain promotes NADPH oxidase activation and myocardial abnormalities under microgravity by facilitating p47 phox phosphorylation via ERK1/2 and p38 pathways. Thus, calpain inhibition may be an effective therapeutic approach to reduce microgravity-induced myocardial abnormalities.
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Affiliation(s)
- Liwen Liang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada
| | - Huili Li
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Ting Cao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Lina Qu
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, China.
| | - Lulu Zhang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Peter A Greer
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, Queen's University, Kingston, Ontario, Canada; Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Jianmin Li
- Department of Pathology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Douglas L Jones
- Department of Physiology and Pharmacology, Western University, London, Ontario, Canada; Lawson Health Research Institute of London Health Sciences Centre, London, Ontario, Canada; Department of Medicine, Western University, London, Ontario, Canada
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada; Lawson Health Research Institute of London Health Sciences Centre, London, Ontario, Canada; Department of Medicine, Western University, London, Ontario, Canada.
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25
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Mu X, Wang P, Wang X, Li Y, Zhao H, Li Q, Essandoh K, Deng S, Peng T, Fan GC. Identification of a Novel Antisepsis Pathway: Sectm1a Enhances Macrophage Phagocytosis of Bacteria through Activating GITR. J Immunol 2020; 205:1633-1643. [PMID: 32769121 DOI: 10.4049/jimmunol.2000440] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/13/2020] [Indexed: 02/06/2023]
Abstract
The inability to effectively control invading bacteria or other pathogens is a major cause of multiple organ dysfunction and death in sepsis. As the first-line defense of the immune system, macrophages play a crucial role in the removal of pathogens during sepsis. In this study, we define secreted and transmembrane 1A (Sectm1a) as a novel ligand of glucocorticoid-induced TNFR (GITR) that greatly boosts macrophage phagocytosis and bactericidal capacity. Using a global Sectm1a knockout (KO) mouse model, we observed that Sectm1a deficiency significantly suppressed phagocytosis and bactericidal activity in both recruited macrophages and tissue-resident macrophages, which consequently aggravated bacterial burden in the blood and multiple organs and further increased systemic inflammation, leading to multiple organ injury and increased mortality during polymicrobial sepsis. By contrast, treatment of septic mice with recombinant Sectm1a protein (rSectm1a) not only promoted macrophage phagocytosis and bactericidal activity but also significantly improved survival outcome. Mechanistically, we identified that Sectm1a could bind to GITR in the surface of macrophages and thereby activate its downstream PI3K-Akt pathway. Accordingly, rSectm1a-mediated phagocytosis and bacterial killing were abolished in macrophages by either KO of GITR or pharmacological inhibition of the PI3K-Akt pathway. In addition, rSectm1a-induced therapeutic effects on sepsis injury were negated in GITR KO mice. Taken together, these results uncover that Sectm1a may represent a novel target for drug development to control bacterial dissemination during sepsis or other infectious diseases.
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Affiliation(s)
- Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Peng Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267.,Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Hongyan Zhao
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267.,Department of Critical Care Medicine, The Second Hospital of Shandong University, Jinan, Shandong 250033, China
| | - Qianqian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267.,Division of Pharmaceutical Science, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267
| | - Kobina Essandoh
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Shan Deng
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267.,Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China; and
| | - Tianqing Peng
- The Centre for Critical Illness Research, Lawson Health Research Institute, London, Ontario N6C 2R5, Canada
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267;
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26
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Deng S, Essandoh K, Wang X, Li Y, Huang W, Chen J, Peng J, Jiang DS, Mu X, Wang C, Peng T, Guan JL, Wang Y, Jegga A, Huang K, Fan GC. Tsg101 positively regulates P62-Keap1-Nrf2 pathway to protect hearts against oxidative damage. Redox Biol 2020; 32:101453. [PMID: 32057709 PMCID: PMC7264471 DOI: 10.1016/j.redox.2020.101453] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/01/2020] [Accepted: 02/05/2020] [Indexed: 12/17/2022] Open
Abstract
Currently, most antioxidants do not show any favorable clinical outcomes in reducing myocardial ischemia-reperfusion (I/R) injury, suggesting an urgent need for exploring a new regulator of redox homeostasis in I/R hearts. Here, using heart-specific transgenic (TG) and knockdown (KD) mouse models, tumor susceptibility gene 101 (Tsg101) is defined as a novel cardiac-protector against I/R-triggered oxidative stress. RNA sequencing and bioinformatics data surprisingly reveal that most upregulated genes in Tsg101-TG hearts are transcribed by Nrf2. Accordingly, pharmacological inhibition of Nrf2 offsets Tsg101-elicited cardio-protection. Mechanistically, Tsg101 interacts with SQSTM1/p62 through its PRR domain, and promotes p62 aggregation, leading to recruitment of Keap1 for degradation by autophagosomes and release of Nrf2 to the nucleus. Furthermore, knockout of p62 abrogates Tsg101-induced cardio-protective effects during I/R. Hence, our findings uncover a previously unrecognized role of Tsg101 in the regulation of p62/Keap1/Nrf2 signaling cascades and provide a new strategy for the treatment of ischemic heart disease.
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Affiliation(s)
- Shan Deng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China; Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA; Clinical Center for Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Kobina Essandoh
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Jiangtong Peng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China; Clinical Center for Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Ding-Sheng Jiang
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Chenran Wang
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, Ontario, Canada
| | - Jun-Lin Guan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Anil Jegga
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Kai Huang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China; Clinical Center for Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
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Peng J, Li Y, Wang X, Deng S, Holland J, Yates E, Chen J, Gu H, Essandoh K, Mu X, Wang B, McNamara RK, Peng T, Jegga AG, Liu T, Nakamura T, Huang K, Perez-Tilve D, Fan GC. An Hsp20-FBXO4 Axis Regulates Adipocyte Function through Modulating PPARγ Ubiquitination. Cell Rep 2019; 23:3607-3620. [PMID: 29925002 DOI: 10.1016/j.celrep.2018.05.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 04/21/2018] [Accepted: 05/18/2018] [Indexed: 10/28/2022] Open
Abstract
Exposure to cold temperature is well known to upregulate heat shock protein (Hsp) expression and recruit and/or activate brown adipose tissue and beige adipocytes in humans and animals. However, whether and how Hsps regulate adipocyte function for energy homeostatic responses is poorly understood. Here, we demonstrate a critical role of Hsp20 as a negative regulator of adipocyte function. Deletion of Hsp20 enhances non-shivering thermogenesis and suppresses inflammatory responses, leading to improvement of glucose and lipid metabolism under both chow diet and high-fat diet conditions. Mechanistically, Hsp20 controls adipocyte function by interacting with the subunit of the ubiquitin ligase complex, F-box only protein 4 (FBXO4), and regulating the ubiquitin-dependent degradation of peroxisome proliferation activated receptor gamma (PPARγ). Indeed, Hsp20 deficiency mimics and enhances the pharmacological effects of the PPARγ agonist rosiglitazone. Together, our findings suggest a role of Hsp20 in mediating adipocyte function by linking β-adrenergic signaling to PPARγ activity.
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Affiliation(s)
- Jiangtong Peng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China; Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Shan Deng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China; Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Jenna Holland
- Division of Endocrinology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45237, USA
| | - Emily Yates
- Division of Endocrinology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45237, USA
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Haitao Gu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Kobina Essandoh
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Boyu Wang
- Samaritan Medical Center, Watertown, NY 13601, USA
| | - Robert K McNamara
- Lipidomics Research Program, Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, OH 45219-0516, USA
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, London, ON N6A 4G5, Canada
| | - Anil G Jegga
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Tiemin Liu
- Sate Key Laboratory of Genetic Engineering, School of Life Sciences, Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Takahisa Nakamura
- Divisions of Endocrinology and Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
| | - Kai Huang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China.
| | - Diego Perez-Tilve
- Division of Endocrinology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45237, USA.
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
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28
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Essandoh K, Wang X, Huang W, Deng S, Gardner G, Mu X, Li Y, Kranias EG, Wang Y, Fan GC. Tumor susceptibility gene 101 ameliorates endotoxin-induced cardiac dysfunction by enhancing Parkin-mediated mitophagy. J Biol Chem 2019; 294:18057-18068. [PMID: 31619520 DOI: 10.1074/jbc.ra119.008925] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 10/10/2019] [Indexed: 12/28/2022] Open
Abstract
Cardiac mitochondrial damage and subsequent inflammation are hallmarks of endotoxin-induced myocardial depression. Activation of the Parkin/PTEN-induced kinase 1 (PINK1) pathway has been shown to promote autophagy of damaged mitochondria (mitophagy) and to protect from endotoxin-induced cardiac dysfunction. Tumor susceptibility gene 101 (TSG101) is a key member of the endosomal recycling complexes required for transport, which may affect autophagic flux. In this study, we investigated whether TSG101 regulates mitophagy and influences the outcomes of endotoxin-induced myocardial dysfunction. TSG101 transgenic and knockdown mice underwent endotoxin/lipopolysaccharide treatment (10 μg/g) and were assessed for survival, cardiac function, systemic/local inflammation, and activity of mitophagy mediators in the heart. Upon endotoxin challenge and compared with WT mice, TSG101 transgenic mice exhibited increased survival, preserved cardiac contractile function, reduced inflammation, and enhanced mitophagy activation in the heart. By contrast, TSG101 knockdown mice displayed opposite phenotypes during endotoxemia. Mechanistically, both coimmunoprecipitation assays and coimmunofluorescence staining revealed that TSG101 directly binds to Parkin in the cytosol of myocytes and facilitates translocation of Parkin from the cytosol to the mitochondria. Our results indicate that TSG101 elevation could protect against endotoxin-triggered myocardial injury by promoting Parkin-induced mitophagy.
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Affiliation(s)
- Kobina Essandoh
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Shan Deng
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267; Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - George Gardner
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Evangelia G Kranias
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267.
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29
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Liang L, Yuan W, Qu L, Li H, Zhang L, Fan GC, Peng T. Administration of losartan preserves cardiomyocyte size and prevents myocardial dysfunction in tail-suspended mice by inhibiting p47 phox phosphorylation, NADPH oxidase activation and MuRF1 expression. J Transl Med 2019; 17:279. [PMID: 31438970 PMCID: PMC6704685 DOI: 10.1186/s12967-019-2021-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 08/13/2019] [Indexed: 12/12/2022] Open
Abstract
Background Spaceflight or microgravity conditions cause myocardial atrophy and dysfunction, contributing to post-flight orthostatic intolerance. However, the underlying mechanisms remain incompletely understood and preventive approaches are limited. This study investigated whether and how losartan, a blocker of angiotensin-II receptor, preserved cardiomyocyte size and prevented myocardial dysfunction during microgravity. Method Adult male mice were suspended with their tails to simulate microgravity. Echocardiography was performed to assess myocardial function. Heart weight and cardiomyocyte size were measured. NADPH oxidase activation was determined by analyzing membrane translocation of its cytosolic subunits including p47phox, p67phox and Rac1. Heart tissues were also assayed for oxidative stress, p47phox phosphorylation (Ser345), MuRF1 protein levels and angiotensin-II production. Results Tail-suspension for 28 days increased angiotensin-II production in hearts, decreased cardiomyocyte size and heart weight, and induced myocardial dysfunction. Administration of losartan preserved cardiomyocyte size and heart weight, and prevented myocardial dysfunction in tail-suspended mice. These cardioprotective effects of losartan were associated with inhibition of p47phox phosphorylation (Ser345), NADPH oxidase and oxidative stress in tail-suspended mouse hearts. Additionally, the NADPH oxidase inhibitor, apocynin, also reduced oxidative stress, preserved cardiomyocyte size and heart weight, and improved myocardial function in tail-suspended mice. Furthermore, losartan but not apocynin attenuated tail-suspension-induced up-regulation of MuRF1 protein in mouse hearts. Conclusions Administration of losartan preserves cardiomyocyte size and prevents myocardial dysfunction under microgravity by blocking p47phox phosphorylation and NADPH oxidase activation, and by inhibiting MuRF1 expression. Thus, losartan may be a useful drug to prevent microgravity-induced myocardial abnormalities.
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Affiliation(s)
- Liwen Liang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Wenyi Yuan
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Lina Qu
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, 100094, China.
| | - Huili Li
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Lulu Zhang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
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30
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Li Y, Deng S, Peng J, Wang X, Essandoh K, Mu X, Peng T, Meng ZX, Fan GC. MicroRNA-223 is essential for maintaining functional β-cell mass during diabetes through inhibiting both FOXO1 and SOX6 pathways. J Biol Chem 2019; 294:10438-10448. [PMID: 31118273 DOI: 10.1074/jbc.ra119.007755] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/16/2019] [Indexed: 01/26/2023] Open
Abstract
The initiation and development of diabetes are mainly ascribed to the loss of functional β-cells. Therapies designed to regenerate β-cells provide great potential for controlling glucose levels and thereby preventing the devastating complications associated with diabetes. This requires detailed knowledge of the molecular events and underlying mechanisms in this disorder. Here, we report that expression of microRNA-223 (miR-223) is up-regulated in islets from diabetic mice and humans, as well as in murine Min6 β-cells exposed to tumor necrosis factor α (TNFα) or high glucose. Interestingly, miR-223 knockout (KO) mice exhibit impaired glucose tolerance and insulin resistance. Further analysis reveals that miR-223 deficiency dramatically suppresses β-cell proliferation and insulin secretion. Mechanistically, using luciferase reporter gene assays, histological analysis, and immunoblotting, we demonstrate that miR-223 inhibits both forkhead box O1 (FOXO1) and SRY-box 6 (SOX6) signaling, a unique bipartite mechanism that modulates expression of several β-cell markers (pancreatic and duodenal homeobox 1 (PDX1), NK6 homeobox 1 (NKX6.1), and urocortin 3 (UCN3)) and cell cycle-related genes (cyclin D1, cyclin E1, and cyclin-dependent kinase inhibitor P27 (P27)). Importantly, miR-223 overexpression in β-cells could promote β-cell proliferation and improve β-cell function. Taken together, our results suggest that miR-223 is a critical factor for maintaining functional β-cell mass and adaptation during metabolic stress.
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Affiliation(s)
- Yutian Li
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Shan Deng
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267.,Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China 430074
| | - Jiangtong Peng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China 430074
| | - Xiaohong Wang
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Kobina Essandoh
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Xingjiang Mu
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, Ontario, Canada N6C 2R5, and
| | - Zhuo-Xian Meng
- Department of Pathology and Pathophysiology, Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China 310058
| | - Guo-Chang Fan
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267,
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31
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Teng X, Ji C, Zhong H, Zheng D, Ni R, Hill DJ, Xiong S, Fan GC, Greer PA, Shen Z, Peng T. Selective deletion of endothelial cell calpain in mice reduces diabetic cardiomyopathy by improving angiogenesis. Diabetologia 2019; 62:860-872. [PMID: 30778623 PMCID: PMC6702672 DOI: 10.1007/s00125-019-4828-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 01/14/2019] [Indexed: 01/09/2023]
Abstract
AIMS/HYPOTHESIS The role of non-cardiomyocytes in diabetic cardiomyopathy has not been fully addressed. This study investigated whether endothelial cell calpain plays a role in myocardial endothelial injury and microvascular rarefaction in diabetes, thereby contributing to diabetic cardiomyopathy. METHODS Endothelial cell-specific Capns1-knockout (KO) mice were generated. Conditions mimicking prediabetes and type 1 and type 2 diabetes were induced in these KO mice and their wild-type littermates. Myocardial function and coronary flow reserve were assessed by echocardiography. Histological analyses were performed to determine capillary density, cardiomyocyte size and fibrosis in the heart. Isolated aortas were assayed for neovascularisation. Cultured cardiac microvascular endothelial cells were stimulated with high palmitate. Angiogenesis and apoptosis were analysed. RESULTS Endothelial cell-specific deletion of Capns1 disrupted calpain 1 and calpain 2 in endothelial cells, reduced cardiac fibrosis and hypertrophy, and alleviated myocardial dysfunction in mouse models of diabetes without significantly affecting systemic metabolic variables. These protective effects of calpain disruption in endothelial cells were associated with an increase in myocardial capillary density (wild-type vs Capns1-KO 3646.14 ± 423.51 vs 4708.7 ± 417.93 capillary number/high-power field in prediabetes, 2999.36 ± 854.77 vs 4579.22 ± 672.56 capillary number/high-power field in type 2 diabetes and 2364.87 ± 249.57 vs 3014.63 ± 215.46 capillary number/high-power field in type 1 diabetes) and coronary flow reserve. Ex vivo analysis of neovascularisation revealed more endothelial cell sprouts from aortic rings of prediabetic and diabetic Capns1-KO mice compared with their wild-type littermates. In cultured cardiac microvascular endothelial cells, inhibition of calpain improved angiogenesis and prevented apoptosis under metabolic stress. Mechanistically, deletion of Capns1 elevated the protein levels of β-catenin in endothelial cells of Capns1-KO mice and constitutive activity of calpain 2 suppressed β-catenin protein expression in cultured endothelial cells. Upregulation of β-catenin promoted angiogenesis and inhibited apoptosis whereas knockdown of β-catenin offset the protective effects of calpain inhibition in endothelial cells under metabolic stress. CONCLUSIONS/INTERPRETATION These results delineate a primary role of calpain in inducing cardiac endothelial cell injury and impairing neovascularisation via suppression of β-catenin, thereby promoting diabetic cardiomyopathy, and indicate that calpain is a promising therapeutic target to prevent diabetic cardiac complications.
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Affiliation(s)
- Xiaomei Teng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Department of Cardiovascular Surgery of the First Affiliated Hospital, Soochow University, Suzhou, China
- Institute for Cardiovascular Science, Soochow University, Suzhou, China
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Chen Ji
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Huiting Zhong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Dong Zheng
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Rui Ni
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - David J Hill
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Medicine, Western University, London, ON, Canada
- Department of Physiology and Pharmacology, Western University, London, ON, Canada
| | - Sidong Xiong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Peter A Greer
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, Queen's University, Kingston, ON, Canada
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - Zhenya Shen
- Department of Cardiovascular Surgery of the First Affiliated Hospital, Soochow University, Suzhou, China
- Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China.
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada.
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada.
- Department of Medicine, Western University, London, ON, Canada.
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32
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Gardner GT, Travers JG, Qian J, Liu GS, Haghighi K, Robbins N, Jiang M, Li Y, Fan GC, Rubinstein J, Blaxall BC, Kranias EG. Phosphorylation of Hsp20 Promotes Fibrotic Remodeling and Heart Failure. ACTA ACUST UNITED AC 2019; 4:188-199. [PMID: 31061921 PMCID: PMC6488766 DOI: 10.1016/j.jacbts.2018.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 09/27/2018] [Accepted: 11/14/2018] [Indexed: 01/28/2023]
Abstract
Cardiomyocyte-specific increases in phosphorylated Hsp20 (S16D-Hsp20) to levels similar to those observed in human failing hearts are associated with early fibrotic remodeling and depressed left ventricular function, symptoms which progress to heart failure and early death. The underlying mechanisms appear to involve translocation of phosphorylated Hsp20 to the nucleus and upregulation of interleukin (IL)-6, which subsequently activates cardiac fibroblasts in a paracrine fashion through transcription factor STAT3 signaling. Accordingly, treatment of S16D-Hsp20 mice with a rat anti-mouse IL-6 receptor monoclonal antibody (MR16-1) attenuated interstitial fibrosis and preserved cardiac function. These findings suggest that phosphorylated Hsp20 may be a potential therapeutic target in heart failure.
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Key Words
- Ccl2, C-C motif chemokine ligand 2
- Ccl3, C-C motif chemokine ligand 3
- Col1a1, collagen 1A1
- Col3A1, collagen 3A1
- ECM, extra-cellular matrix
- Hsp, heat shock protein
- Hsp20
- I/R, ischemia/reperfusion
- IL, interleukin
- IL-6
- Postn, periostin
- SMA, smooth muscle actin
- STAT3, signal transducer and activator of transcription 3
- TG, transgenic
- TGF, transforming growth factor
- TNF, tumor necrosis factor
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling
- WT, wild type
- fibroblast
- heart failure
- remodeling
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Affiliation(s)
- George T Gardner
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Joshua G Travers
- Department of Pediatrics, Division of Molecular Cardiovascular Biology, The Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jiang Qian
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Guan-Sheng Liu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Kobra Haghighi
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Nathan Robbins
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Min Jiang
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Jack Rubinstein
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Burns C Blaxall
- Department of Pediatrics, Division of Molecular Cardiovascular Biology, The Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Evangelia G Kranias
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Molecular Biology Division, Center for Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
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33
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Essandoh K, Deng S, Wang X, Jiang M, Mu X, Peng J, Li Y, Peng T, Wagner KU, Rubinstein J, Fan GC. Tsg101 positively regulates physiologic-like cardiac hypertrophy through FIP3-mediated endosomal recycling of IGF-1R. FASEB J 2019; 33:7451-7466. [PMID: 30884248 DOI: 10.1096/fj.201802338rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Development of physiologic cardiac hypertrophy has primarily been ascribed to the IGF-1 and its receptor, IGF-1 receptor (IGF-1R), and subsequent activation of the protein kinase B (Akt) pathway. However, regulation of endosome-mediated recycling and degradation of IGF-1R during physiologic hypertrophy has not been investigated. In a physiologic hypertrophy model of treadmill-exercised mice, we observed that levels of tumor susceptibility gene 101 (Tsg101), a key member of the endosomal sorting complex required for transport, were dramatically elevated in the heart compared with sedentary controls. To determine the role of Tsg101 on physiologic hypertrophy, we generated a transgenic (TG) mouse model with cardiac-specific overexpression of Tsg101. These TG mice exhibited a physiologic-like cardiac hypertrophy phenotype at 8 wk evidenced by: 1) the absence of cardiac fibrosis, 2) significant improvement of cardiac function, and 3) increased total and plasma membrane levels of IGF-1R and increased phosphorylation of Akt. Mechanistically, we identified that Tsg101 interacted with family-interacting protein 3 (FIP3) and IGF-1R, thereby stabilizing FIP3 and enhancing recycling of IGF-1R. In vitro, adenovirus-mediated overexpression of Tsg101 in neonatal rat cardiomyocytes resulted in cell hypertrophy, which was blocked by addition of monensin, an inhibitor of endosome-mediated recycling, and by small interfering RNA-mediated knockdown (KD) of FIP3. Furthermore, cardiac-specific KD of Tsg101 showed a significant reduction in levels of endosomal recycling compartment members (Rab11a and FIP3), IGF-1R, and Akt phosphorylation. Most interestingly, Tsg101-KD mice failed to develop cardiac hypertrophy after intense treadmill training. Taken together, our data identify Tsg101 as a novel positive regulator of physiologic cardiac hypertrophy through facilitating the FIP3-mediated endosomal recycling of IGF-1R.-Essandoh, K., Deng, S., Wang, X., Jiang, M., Mu, X., Peng, J., Li, Y., Peng, T., Wagner, K.-U., Rubinstein, J., Fan, G.-C. Tsg101 positively regulates physiologic-like cardiac hypertrophy through FIP3-mediated endosomal recycling of IGF-1R.
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Affiliation(s)
- Kobina Essandoh
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Shan Deng
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Department of Cardiology, Union Hospital-Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Min Jiang
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Xingjiang Mu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Jiangtong Peng
- Department of Cardiology, Union Hospital-Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, London, Ontario, Canada
| | - Kay-Uwe Wagner
- Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Jack Rubinstein
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Cao T, Fan S, Zheng D, Wang G, Yu Y, Chen R, Song LS, Fan GC, Zhang Z, Peng T. Increased calpain-1 in mitochondria induces dilated heart failure in mice: role of mitochondrial superoxide anion. Basic Res Cardiol 2019; 114:17. [PMID: 30874894 DOI: 10.1007/s00395-019-0726-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 03/11/2019] [Indexed: 12/17/2022]
Abstract
We and others have reported that calpain-1 was increased in myocardial mitochondria from various animal models of heart disease. This study investigated whether constitutive up-regulation of calpain-1 restricted to mitochondria induced myocardial injury and heart failure and, if so, whether these phenotypes could be rescued by selective inhibition of mitochondrial superoxide production. Transgenic mice with human CAPN1 up-regulation restricted to mitochondria in cardiomyocytes (Tg-mtCapn1/tTA) were generated and characterized with low and high over-expression of transgenic human CAPN1 restricted to mitochondria, respectively. Transgenic up-regulation of mitochondria-targeted CAPN1 dose-dependently induced cardiac cell death, adverse myocardial remodeling, heart failure, and early death in mice, the changes of which were associated with mitochondrial dysfunction and mitochondrial superoxide generation. Importantly, a daily injection of mitochondria-targeted superoxide dismutase mimetics mito-TEMPO for 1 month starting from age 2 months attenuated cardiac cell death, adverse myocardial remodeling and heart failure, and reduced mortality in Tg-mtCapn1/tTA mice. In contrast, administration of TEMPO did not achieve similar cardiac protection in transgenic mice. Furthermore, transgenic up-regulation of mitochondria-targeted CAPN1 induced a reduction of ATP5A1 protein and ATP synthase activity in hearts. In cultured cardiomyocytes, increased calpain-1 in mitochondria promoted mitochondrial permeability transition pore (mPTP) opening and induced cell death, which were prevented by over-expression of ATP5A1, mito-TEMPO or cyclosporin A, an inhibitor of mPTP opening. In conclusion, this study has provided direct evidence demonstrating that increased mitochondrial calpain-1 is an important mechanism contributing to myocardial injury and heart failure by disrupting ATP synthase, and promoting mitochondrial superoxide generation and mPTP opening.
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Affiliation(s)
- Ting Cao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Shuai Fan
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Dong Zheng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4S2, Canada
- Department of Medicine, University of Western Ontario, London, ON, N6A 4S2, Canada
- Department of Pathology and Laboratory Medicine, University of Western Ontario, London, ON, N6A 4S2, Canada
| | - Grace Wang
- Faculty of Medicine, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Yong Yu
- Shanghai Institute of Cardiovascular Diseases, Shanghai Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Ruizhen Chen
- Shanghai Institute of Cardiovascular Diseases, Shanghai Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Long-Sheng Song
- Division of Cardiovascular Medicine, Department of Internal Medicine, François M. Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City, IA, 52242, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Zhuxu Zhang
- Department of Medicine, University of Western Ontario, London, ON, N6A 4S2, Canada
- Department of Pathology and Laboratory Medicine, University of Western Ontario, London, ON, N6A 4S2, Canada
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4S2, Canada.
- Department of Medicine, University of Western Ontario, London, ON, N6A 4S2, Canada.
- Department of Pathology and Laboratory Medicine, University of Western Ontario, London, ON, N6A 4S2, Canada.
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35
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Zheng D, Su Z, Zhang Y, Ni R, Fan GC, Robbins J, Song LS, Li J, Peng T. Calpain-2 promotes MKP-1 expression protecting cardiomyocytes in both in vitro and in vivo mouse models of doxorubicin-induced cardiotoxicity. Arch Toxicol 2019; 93:1051-1065. [DOI: 10.1007/s00204-019-02405-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 01/31/2019] [Indexed: 12/31/2022]
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Ren X, Roessler AE, Lynch TL, Haar L, Mallick F, Lui Y, Tranter M, Ren MH, Xie WR, Fan GC, Zhang JM, Kranias EG, Anjak A, Koch S, Jiang M, Miao Q, Wang Y, Cohen A, Rubinstein J, Weintraub NL, Jones WK. Cardioprotection via the skin: nociceptor-induced conditioning against cardiac MI in the NIC of time. Am J Physiol Heart Circ Physiol 2018; 316:H543-H553. [PMID: 30575436 DOI: 10.1152/ajpheart.00094.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Timely reperfusion is still the most effective approach to limit infarct size in humans. Yet, despite advances in care and reduction in door-to-balloon times, nearly 25% of patients develop heart failure postmyocardial infarction, with its attendant morbidity and mortality. We previously showed that cardioprotection results from a skin incision through the umbilicus in a murine model of myocardial infarction. In the present study, we show that an electrical stimulus or topical capsaicin applied to the skin in the same region induces significantly reduced infarct size in a murine model. We define this class of phenomena as nociceptor-induced conditioning (NIC) based on the peripheral nerve mechanism of initiation. We show that NIC is effective both as a preconditioning and postconditioning remote stimulus, reducing infarct size by 86% and 80%, respectively. NIC is induced via activation of skin C-fiber nerves. Interestingly, the skin region that activates NIC is limited to the anterior of the T9-T10 vertebral region of the abdomen. Cardioprotection after NIC requires the integrity of the spinal cord from the region of stimulation to the thoracic vertebral region of the origin of the cardiac nerves but does not require that the cord be intact in the cervical region. Thus, we show that NIC is a reflex and not a central nervous system-mediated effect. The mechanism involves bradykinin 2 receptor activity and activation of PKC, specifically, PKC-α. The similarity of the neuroanatomy and conservation of the effectors of cardioprotection supports that NIC may be translatable to humans as a nontraumatic and practical adjunct therapy against ischemic disease. NEW & NOTEWORTHY This study shows that an electrical stimulus to skin sensory nerves elicits a very powerful cardioprotection against myocardial infarction. This stimulus works by a neurogenic mechanism similar to that previously elucidated for remote cardioprotection of trauma. Nociceptor-induced conditioning is equally potent when applied before ischemia or at reperfusion and has great potential clinically.
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Affiliation(s)
- Xiaoping Ren
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
| | - Anne E Roessler
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
| | - Thomas L Lynch
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
| | - Lauren Haar
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
| | - Faryal Mallick
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Yong Lui
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Michael Tranter
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Michelle Huan Ren
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Wen Rui Xie
- Department of Anesthesiology and Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Guo-Chang Fan
- Department of Pharmacology, University of Cincinnati , Cincinnati, Ohio
| | - Jun-Ming Zhang
- Department of Anesthesiology and Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | - Ahmad Anjak
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Sheryl Koch
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Min Jiang
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Qing Miao
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
| | - Yang Wang
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
| | - Albert Cohen
- Department of Mathematics, Michigan State University , East Lansing, Michigan
| | - Jack Rubinstein
- Division of Cardiology, Department of Medicine, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | - Neal L Weintraub
- Division of Cardiology, Georgia Regents University, Augusta, Geogia
| | - W Keith Jones
- Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Mawood, Illinois
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Hong G, Zheng D, Zhang L, Ni R, Wang G, Fan GC, Lu Z, Peng T. Administration of nicotinamide riboside prevents oxidative stress and organ injury in sepsis. Free Radic Biol Med 2018; 123:125-137. [PMID: 29803807 PMCID: PMC6236680 DOI: 10.1016/j.freeradbiomed.2018.05.073] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 05/01/2018] [Accepted: 05/19/2018] [Indexed: 01/11/2023]
Abstract
AIMS Sepsis-caused multiple organ failure remains the major cause of morbidity and mortality in intensive care units. Nicotinamide riboside (NR) is a precursor of nicotinamide adenine dinucleotide (NAD+), which is important in regulating oxidative stress. This study investigated whether administration of NR prevented oxidative stress and organ injury in sepsis. METHODS Mouse sepsis models were induced by injection of lipopolysaccharides (LPS) or feces-injection-in-peritoneum. NR was given before sepsis onset. Cultured macrophages and endothelial cells were incubated with various agents. RESULTS Administration of NR elevated the NAD+ levels, and elicited a reduction of oxidative stress, inflammation and caspase-3 activity in lung and heart tissues, which correlated with attenuation of pulmonary microvascular permeability and myocardial dysfunction, leading to less mortality in sepsis models. These protective effects of NR were associated with decreased levels of plasma high mobility group box-1 (HMGB1) in septic mice. Consistently, pre-treatment of macrophages with NR increased NAD+ content and reduced HMGB1 release upon LPS stimulation. NR also prevented reactive oxygen species (ROS) production and apoptosis in endothelial cells induced by a conditioned-medium collected from LPS-treated macrophages. Furthermore, inhibition of SIRT1 by EX527 offset the negative effects of NR on HMGB1 release in macrophages, and ROS and apoptosis in endothelial cells. CONCLUSIONS Administration of NR prevents lung and heart injury, and improves the survival in sepsis, likely by inhibiting HMGB1 release and oxidative stress via the NAD+/SIRT1 signaling. Given NR has been used as a health supplement, it may be a useful agent to prevent organ injury in sepsis.
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Affiliation(s)
- Guangliang Hong
- Department of Emergency, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada N6A 4G5; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada N6A 4G5
| | - Dong Zheng
- Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada N6A 4G5; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada N6A 4G5; Department of Medicine, Western University, London, Ontario, Canada N6A 4G5; Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China
| | - Lulu Zhang
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China
| | - Rui Ni
- Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada N6A 4G5; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada N6A 4G5
| | - Grace Wang
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada M5S 1A8
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Zhongqiu Lu
- Department of Emergency, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
| | - Tianqing Peng
- Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada N6A 4G5; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada N6A 4G5; Department of Medicine, Western University, London, Ontario, Canada N6A 4G5; Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, China.
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38
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Chen Y, Tang Y, Fan GC, Duan DD. Extracellular vesicles as novel biomarkers and pharmaceutic targets of diseases. Acta Pharmacol Sin 2018; 39:499-500. [PMID: 29606702 DOI: 10.1038/aps.2018.15] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Yu YJ, Wang XH, Fan GC. Versatile effects of bacterium-released membrane vesicles on mammalian cells and infectious/inflammatory diseases. Acta Pharmacol Sin 2018; 39:514-533. [PMID: 28858295 PMCID: PMC5888691 DOI: 10.1038/aps.2017.82] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 05/10/2017] [Indexed: 01/18/2023] Open
Abstract
Gram-negative bacterium-released outer-membrane vesicles (OMVs) and Gram-positive bacterium-released membrane vesicles (MVs) share significant similarities with mammalian cell-derived MVs (eg, microvesicles and exosomes) in terms of structure and their biological activities. Recent studies have revealed that bacterial OMVs/MVs could (1) interact with immune cells to regulate inflammatory responses, (2) transport virulence factors (eg, enzymes, DNA and small RNAs) to host cells and result in cell injury, (3) enhance barrier function by stimulating the expression of tight junction proteins in intestinal epithelial cells, (4) upregulate the expression of endothelial cell adhesion molecules, and (5) serve as natural nanocarriers for immunogenic antigens, enzyme support and drug delivery. In addition, OMVs/MVs can enter the systemic circulation and induce a variety of immunological and metabolic responses. This review highlights the recent advances in the understanding of OMV/MV biogenesis and their compositional remodeling. In addition, interactions between OMVs/MVs and various types of mammalian cells (ie, immune cells, epithelial cells, and endothelial cells) and their pathological/preventive effects on infectious/inflammatory diseases are summarized. Finally, methods for engineering OMVs/MVs and their therapeutic potential are discussed.
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Affiliation(s)
- You-jiang Yu
- Medical College of Yangzhou Polytechnic College, Yangzhou 225009, China
| | - Xiao-hong Wang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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40
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Liu GS, Zhu H, Cai WF, Wang X, Jiang M, Essandoh K, Vafiadaki E, Haghighi K, Lam CK, Gardner G, Adly G, Nicolaou P, Sanoudou D, Liang Q, Rubinstein J, Fan GC, Kranias EG. Regulation of BECN1-mediated autophagy by HSPB6: Insights from a human HSPB6 S10F mutant. Autophagy 2018; 14:80-97. [PMID: 29157081 DOI: 10.1080/15548627.2017.1392420] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
HSPB6/Hsp20 (heat shock protein family B [small] member 6) has emerged as a novel cardioprotector against stress-induced injury. We identified a human mutant of HSPB6 (HSPB6S10F) exclusively present in dilated cardiomyopathy (DCM) patients. Cardiac expression of this mutant in mouse hearts resulted in remodeling and dysfunction, which progressed to heart failure and early death. These detrimental effects were associated with reduced interaction of mutant HSPB6S10F with BECN1/Beclin 1, leading to BECN1 ubiquitination and its proteosomal degradation. As a result, autophagy flux was substantially inhibited and apoptosis was increased in HSPB6S10F-mutant hearts. In contrast, overexpression of wild-type HSPB6 (HSPB6 WT) not only increased BECN1 levels, but also competitively suppressed binding of BECN1 to BCL2, resulting in stimulated autophagy. Indeed, preinhibition of autophagy attenuated the cardioprotective effects of HSPB6 WT. Taken together, these findings reveal a new regulatory mechanism of HSPB6 in cell survival through its interaction with BECN1. Furthermore, Ser10 appears to be crucial for the protective effects of HSPB6 and transversion of this amino acid to Phe contributes to cardiomyopathy.
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Affiliation(s)
- Guan-Sheng Liu
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Hongyan Zhu
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Wen-Feng Cai
- b Department of Pathology & Lab Medicine , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Xiaohong Wang
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Min Jiang
- c Department of Internal Medicine , University of Cincinnati College of Medicine. Cincinnati , OH , USA
| | - Kobina Essandoh
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Elizabeth Vafiadaki
- d Molecular Biology Division, Center for Basic Research, Biomedical Research Foundation of the Academy of Athens , Athens , Greece
| | - Kobra Haghighi
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Chi Keung Lam
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - George Gardner
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - George Adly
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Persoulla Nicolaou
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Despina Sanoudou
- d Molecular Biology Division, Center for Basic Research, Biomedical Research Foundation of the Academy of Athens , Athens , Greece
| | - Qiangrong Liang
- e Department of Biomedical Sciences , New York Institute of Technology College of Osteopathic Medicine , Old Westbury , NY , USA
| | - Jack Rubinstein
- c Department of Internal Medicine , University of Cincinnati College of Medicine. Cincinnati , OH , USA
| | - Guo-Chang Fan
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA
| | - Evangelia G Kranias
- a Department of Pharmacology & System Physiology , University of Cincinnati College of Medicine, Cincinnati , OH , USA.,d Molecular Biology Division, Center for Basic Research, Biomedical Research Foundation of the Academy of Athens , Athens , Greece
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Mu X, Wang X, Essandoh K, Li Y, Pugh AM, Peng J, Deng S, Salem ES, Caldwell CC, Fan GC. Abstract 628: Circulating Exosomes Isolated From Septic Mice Induce Endothelial Hyperpermeability Through Promoting Podosome Cluster Formation. Arterioscler Thromb Vasc Biol 2017. [DOI: 10.1161/atvb.37.suppl_1.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Septic shock increases vascular permeability, leading to multiple organ failure and higher mortality. Reactive oxygen species (ROS) have been shown to promote both actin cytoskeleton reorganization resulting in vascular leakage and the formation of podosome, an actin-based dynamic membrane structure. Interestingly, recent studies have shown that circulating exosomes from septic patients contained higher levels of ROS than healthy ones. In this study, we hypothesized that septic exosomes can transfer exosomal ROS to endothelial cell (EC) to promote the generation of podosomes, leading to hyperpermeability.
Methods:
C57BL/6 mice (20-25g) were subjected to CLP surgery or injection with LPS (25 μg/g). Sham-operated or PBS-treated mice were used as controls. Exosomes were isolated from sera, collected at 3 h post-CLP or post-LPS-injection. Podosomes were identified by co-immunostaining F-actin/cortactin following stimulation with PMA, thrombin and exosomes. Transendothelial electrical resistance (TEER) analysis was performed to monitor the change of EC monolayer permeability. The ROS levels in exosomes and ECs were measured by using a ROS-Glo H
2
O
2
Assay kit.
Results:
First, we observed that thrombin and PMA both stimulated podosome cluster formation at the cell periphery in (30-36%, 90-108 of 300) ECs, which correlated well with reduction (40.5-50.7%, 6-7.5 of 14.8) in TEER values (n=4, p<0.01). Next, we discovered that septic exosomes collected at 3 h post-CLP or post-LPS-injection contained significantly higher amount of H
2
O
2
which can be transferred into ECs, leading to 1.5-fold increase of H
2
O
2
in ECs (n=6, p<0.01). Moreover, treatment of ECs with septic exosomes remarkably increased the percentage of cells carrying podosome clusters (20.3%, 51 of 251) compared to controls (9.5%, 24 of 252 n=4, p<0.01). Meanwhile, the TEER value was reduced by 27.6% (3.4 of 12.3) upon septic exosome stimulation (n=4, p<0.01). By contrast, scavenging H
2
O
2
in septic exosomes significantly attenuated their effects on podosome cluster formation and EC monolayer TEER.
Conclusion:
septic exosomes can stimulate the formation of podosome clusters in ECs through transferring exosomal H
2
O
2,
leading to endothelial hyperpermeability.
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Abstract
Diabetic subjects are at risk of developing cardiovascular disease, which accounts for 60-80% of diabetes-related mortality. Atherosclerosis is still considered as a leading cause of heart failure in diabetic patients, but it could also be an intrinsic and long-term effect of contractile cardiac cells malfunction, known as diabetic cardiomyopathy (DCM). Pathologically, this cardiac dysfunction is manifested by inflammation, apoptosis, fibrosis, hypertrophy and altered cardiomyocytes metabolism. However, the underlying molecular mechanisms of DCM pathophysiology are not clearly understood. Recent and several studies have suggested that exosomes are contributed to the regulation of cell-to-cell communication. Therefore, their in-depth investigation can interpret the complex pathophysiology of DCM. Structurally, exosomes are membrane-bounded vesicles (10-200 nm in diameter), which are actively released from all types of cells and detected in all biological fluids. They carry a wide array of bioactive molecules, including mRNAs, none-coding RNAs (e.g., microRNAs, lncRNAs, circRNAs, etc), proteins and lipids. Importantly, the abundance and nature of loaded molecules inside exosomes fluctuate with cell types and pathological conditions. This chapter summarizes currently available studies on the exosomes' role in the regulation of diabetic cardiomyopathy. Specifically, the advances on the pathological effects of exosomes in diabetic cardiomyopathy as well as the therapeutic potentials and perspectives are also discussed.
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Affiliation(s)
- Esam S B Salem
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, 5872 Care Mail Loc-0575, Cincinnati, OH, 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, 5872 Care Mail Loc-0575, Cincinnati, OH, 45267, USA.
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Wang X, Gu H, Huang W, Peng J, Li Y, Yang L, Qin D, Essandoh K, Wang Y, Peng T, Fan GC. Hsp20-Mediated Activation of Exosome Biogenesis in Cardiomyocytes Improves Cardiac Function and Angiogenesis in Diabetic Mice. Diabetes 2016; 65:3111-28. [PMID: 27284111 PMCID: PMC5033265 DOI: 10.2337/db15-1563] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 05/25/2016] [Indexed: 12/12/2022]
Abstract
Decreased heat shock protein (Hsp) expression in type 1 and type 2 diabetes has been implicated as a primary factor contributing to diabetes-induced organ damage. We recently showed that diabetic cardiomyocytes could release detrimental exosomes, which contain lower levels of Hsp20 than normal ones. To investigate whether such detrimental exosomes could be modified in cardiomyocytes by raising Hsp20 levels to become protective, we used a transgenic (TG) mouse model with cardiac-specific overexpression of Hsp20. TG and control wild-type (WT) mice were injected with streptozotocin (STZ) to induce diabetes. We observed that overexpression of Hsp20 significantly attenuated STZ-caused cardiac dysfunction, hypertrophy, apoptosis, fibrosis, and microvascular rarefaction. Moreover, Hsp20-TG cardiomyocytes exhibited an increased generation/secretion of exosomes by direct interaction of Hsp20 with Tsg101. Of importance, exosomes derived from TG cardiomyocytes encased higher levels of Hsp20, p-Akt, survivin, and SOD1 than WT exosomes and protected against in vitro hyperglycemia-triggered cell death, as well as in vivo STZ-induced cardiac adverse remodeling. Last, blockade of exosome generation by GW4869 remarkably offset Hsp20-mediated cardioprotection in diabetic mice. Our results indicate that elevation of Hsp20 in cardiomyocytes can offer protection in diabetic hearts through the release of instrumental exosomes. Thus, Hsp20-engineered exosomes might be a novel therapeutic agent for diabetic cardiomyopathy.
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MESH Headings
- Aniline Compounds/pharmacology
- Animals
- Benzylidene Compounds/pharmacology
- Cell Movement/drug effects
- Cell Movement/physiology
- Cell Proliferation/drug effects
- Cell Proliferation/physiology
- Cells, Cultured
- Collagen Type I/metabolism
- Collagen Type III/metabolism
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/physiopathology
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Exosomes/drug effects
- Exosomes/metabolism
- HSP20 Heat-Shock Proteins/genetics
- HSP20 Heat-Shock Proteins/metabolism
- Heart/drug effects
- Male
- Mice
- Mice, Transgenic
- Myocardium/metabolism
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/physiology
- Neovascularization, Physiologic/drug effects
- Neovascularization, Physiologic/genetics
- Neovascularization, Physiologic/physiology
- Platelet Endothelial Cell Adhesion Molecule-1/metabolism
- Protein Binding
- Reactive Oxygen Species/metabolism
- Superoxide Dismutase-1/metabolism
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Affiliation(s)
- Xiaohong Wang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Haitao Gu
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Jiangtong Peng
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH Department of Cardiovascular Diseases, Tongji Medical College Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yutian Li
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Liwang Yang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Dongze Qin
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Kobina Essandoh
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, Ontario, Canada
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
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Li S, Zhang L, Ni R, Cao T, Zheng D, Xiong S, Greer PA, Fan GC, Peng T. Disruption of calpain reduces lipotoxicity-induced cardiac injury by preventing endoplasmic reticulum stress. Biochim Biophys Acta Mol Basis Dis 2016; 1862:2023-2033. [PMID: 27523632 DOI: 10.1016/j.bbadis.2016.08.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/15/2016] [Accepted: 08/09/2016] [Indexed: 12/16/2022]
Abstract
Diabetes and obesity are prevalent in westernized countries. In both conditions, excessive fatty acid uptake by cardiomyocytes induces cardiac lipotoxicity, an important mechanism contributing to diabetic cardiomyopathy. This study investigated the effect of calpain disruption on cardiac lipotoxicity. Cardiac-specific capns1 knockout mice and their wild-type littermates (male, age of 4weeks) were fed a high fat diet (HFD) or normal diet for 20weeks. HFD increased body weight, altered blood lipid profiles and impaired glucose tolerance comparably in both capns1 knockout mice and their wild-type littermates. Calpain activity, cardiomyocyte cross-sectional areas, collagen deposition and triglyceride were significantly increased in HFD-fed mouse hearts, and these were accompanied by myocardial dysfunction and up-regulation of hypertrophic and fibrotic collagen genes as well as pro-inflammatory cytokines. These effects of HFD were attenuated by disruption of calpain in capns1 knockout mice. Mechanistically, deletion of capns1 in HFD-fed mouse hearts and disruption of calpain with calpain inhibitor-III, silencing of capn1, or deletion of capns1 in palmitate-stimulated cardiomyocytes prevented endoplasmic reticulum stress, apoptosis, cleavage of caspase-12 and junctophilin-2, and pro-inflammatory cytokine expression. Pharmacological inhibition of endoplasmic reticulum stress diminished palmitate-induced apoptosis and pro-inflammatory cytokine expression in cardiomyocytes. In summary, disruption of calpain prevents lipotoxicity-induced apoptosis in cardiomyocytes and cardiac injury in mice fed a HFD. The role of calpain is mediated, at least partially, through endoplasmic reticulum stress. Thus, calpain/endoplasmic reticulum stress may represent a new mechanism and potential therapeutic targets for cardiac lipotoxicity.
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Affiliation(s)
- Shengcun Li
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China
| | - Lulu Zhang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China
| | - Rui Ni
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China; Critical Illness Research, Lawson Health Research Institute, Western University, London, Ontario N6A 4G5, Canada; Department of Pathology and Laboratory Medicine, Western University, London, Ontario N6A 4G5, Canada
| | - Ting Cao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China
| | - Dong Zheng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China; Critical Illness Research, Lawson Health Research Institute, Western University, London, Ontario N6A 4G5, Canada; Department of Medicine, Western University, London, Ontario N6A 4G5, Canada
| | - Sidong Xiong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China
| | - Peter A Greer
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, Kingston, Ontario K7L 3N6, Canada; Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China; Critical Illness Research, Lawson Health Research Institute, Western University, London, Ontario N6A 4G5, Canada; Department of Medicine, Western University, London, Ontario N6A 4G5, Canada; Department of Pathology and Laboratory Medicine, Western University, London, Ontario N6A 4G5, Canada.
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Qin D, Wang X, Li Y, Yang L, Wang R, Peng J, Essandoh K, Mu X, Peng T, Han Q, Yu KJ, Fan GC. MicroRNA-223-5p and -3p Cooperatively Suppress Necroptosis in Ischemic/Reperfused Hearts. J Biol Chem 2016; 291:20247-59. [PMID: 27502281 DOI: 10.1074/jbc.m116.732735] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Indexed: 11/06/2022] Open
Abstract
Recent studies have shown that myocardial ischemia/reperfusion (I/R)-induced necrosis can be controlled by multiple genes. In this study, we observed that both strands (5p and 3p) of miR-223 were remarkably dysregulated in mouse hearts upon I/R. Precursor miR-223 (pre-miR-223) transgenic mouse hearts exhibited better recovery of contractile performance over reperfusion period and lesser degree of myocardial necrosis than wild type hearts upon ex vivo and in vivo myocardial ischemia. Conversely, pre-miR-223 knock-out (KO) mouse hearts displayed opposite effects. Furthermore, we found that the RIP1/RIP3/MLKL necroptotic pathway and inflammatory response were suppressed in transgenic hearts, whereas they were activated in pre-miR-223 KO hearts upon I/R compared with wild type controls. Accordingly, treatment of pre-miR-223 KO mice with necrostatin-1s, a potent necroptosis inhibitor, significantly decreased I/R-triggered cardiac necroptosis, infarction size, and dysfunction. Mechanistically, we identified two critical cell death receptors, TNFR1 and DR6, as direct targets of miR-223-5p, whereas miR-223-3p directly suppressed the expression of NLRP3 and IκB kinase α, two important mediators known to be involved in I/R-induced inflammation and cell necroptosis. Our findings indicate that miR-223-5p/-3p duplex works together and cooperatively inhibits I/R-induced cardiac necroptosis at multiple layers. Thus, pre-miR-223 may constitute a new therapeutic agent for the treatment of ischemic heart disease.
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Affiliation(s)
- Dongze Qin
- From the Department of Cardiology, the First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, China, Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Xiaohong Wang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Yutian Li
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Liwang Yang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Ruitao Wang
- Department of Intensive Care Unit, The Third Affiliated Hospital of Harbin Medical University, Heilongjiang 150081, China, and
| | - Jiangtong Peng
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Kobina Essandoh
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Xingjiang Mu
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, Ontario N6A 4G5, Canada
| | - Qinghua Han
- From the Department of Cardiology, the First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Kai-Jiang Yu
- Department of Intensive Care Unit, The Third Affiliated Hospital of Harbin Medical University, Heilongjiang 150081, China, and
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267,
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Yang L, Li Y, Wang X, Mu X, Qin D, Huang W, Alshahrani S, Nieman M, Peng J, Essandoh K, Peng T, Wang Y, Lorenz J, Soleimani M, Zhao ZQ, Fan GC. Overexpression of miR-223 Tips the Balance of Pro- and Anti-hypertrophic Signaling Cascades toward Physiologic Cardiac Hypertrophy. J Biol Chem 2016; 291:15700-13. [PMID: 27226563 DOI: 10.1074/jbc.m116.715805] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 12/31/2022] Open
Abstract
MicroRNAs (miRNAs) have been extensively examined in pathological cardiac hypertrophy. However, few studies focused on profiling the miRNA alterations in physiological hypertrophic hearts. In this study we generated a transgenic mouse model with cardiac-specific overexpression of miR-223. Our results showed that elevation of miR-223 caused physiological cardiac hypertrophy with enhanced cardiac function but no fibrosis. Using the next generation RNA sequencing, we observed that most of dys-regulated genes (e.g. Atf3/5, Egr1/3, Sfrp2, Itgb1, Ndrg4, Akip1, Postn, Rxfp1, and Egln3) in miR-223-transgenic hearts were associated with cell growth, but they were not directly targeted by miR-223. Interestingly, these dys-regulated genes are known to regulate the Akt signaling pathway. We further identified that miR-223 directly interacted with 3'-UTRs of FBXW7 and Acvr2a, two negative regulators of the Akt signaling. However, we also validated that miR-223 directly inhibited the expression of IGF-1R and β1-integrin, two positive regulators of the Akt signaling. Lastly, Western blotting did reveal that Akt was activated in miR-223-overexpressing hearts. Adenovirus-mediated overexpression of miR-223 in neonatal rat cardiomyocytes induced cell hypertrophy, which was blocked by the addition of MK2206, a specific inhibitor of Akt Taken together, these data represent the first piece of work showing that miR-223 tips the balance of promotion and inactivation of Akt signaling cascades toward activation of Akt, a key regulator of physiological cardiac hypertrophy. Thus, our study suggests that the ultimate phenotype outcome of a miRNA may be decided by the secondary net effects of the whole target network rather than by several primary direct targets in an organ/tissue.
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Affiliation(s)
- Liwang Yang
- From the Shanxi Medical University, Taiyuan 030001, China, Department of Pharmacology and Cell Biophysics
| | - Yutian Li
- Department of Pharmacology and Cell Biophysics
| | | | | | - Dongze Qin
- From the Shanxi Medical University, Taiyuan 030001, China, Department of Pharmacology and Cell Biophysics
| | - Wei Huang
- Department of Pathology and Laboratory Medicine
| | - Saeed Alshahrani
- Department of Pharmacology and Cell Biophysics, Research Services, Veterans Affairs Hospital and Department of Medicine, and
| | - Michelle Nieman
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267-0575
| | - Jiangtong Peng
- Department of Pharmacology and Cell Biophysics, Department of Cardiology, Union Hospital Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China, and
| | | | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, Ontario N6A 4G5, Canada
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine
| | - John Lorenz
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267-0575
| | - Manoocher Soleimani
- Research Services, Veterans Affairs Hospital and Department of Medicine, and
| | - Zhi-Qing Zhao
- From the Shanxi Medical University, Taiyuan 030001, China
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Hu J, Al-Waili D, Hassan A, Fan GC, Xin M, Hao J. Inhibition of cerebral vascular inflammation by brain endothelium-targeted oligodeoxynucleotide complex. Neuroscience 2016; 329:30-42. [PMID: 27132231 DOI: 10.1016/j.neuroscience.2016.04.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 11/24/2022]
Abstract
The present study generated a novel DNA complex to specifically target endothelial NF-κB to inhibit cerebral vascular inflammation. This DNA complex (GS24-NFκB) contains a DNA decoy which inhibits NF-κB activity, and a DNA aptamer (GS-24), a ligand of transferrin receptor (TfR), which allows for targeted delivery of the DNA decoy into cells. The results indicate that GS24-NFκB was successfully delivered into a murine brain-derived endothelial cell line, bEND5, and inhibited inflammatory responses induced by tumor necrosis factor α (TNF-α) or oxygen-glucose deprivation/re-oxygenation (OGD/R) via down-regulation of the nuclear NF-κB subunit, p65, as well as its downstream inflammatory cytokines, inter-cellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule (VCAM-1). The inhibitory effect of the GS24-NFκB was demonstrated by a significant reduction in TNF-α or OGD/R induced monocyte adhesion to the bEND5 cells after GS24-NFκB treatment. Intravenous (i.v.) injection of GS24-'NFκB (15mg/kg) was able to inhibit the levels of phoseph-p65 and VCAM-1 in brain endothelial cells in a mouse lipopolysaccharide (LPS)-induced inflammatory model in vivo. In conclusion, our approach using DNA nanotechnology for DNA decoy delivery could potentially be utilized for inhibition of inflammation in ischemic stroke and other neuro-inflammatory diseases affecting cerebral vasculature.
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Affiliation(s)
- Jing Hu
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Daniah Al-Waili
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Aishlin Hassan
- Department of Pediatrics, University of Cincinnati & Cincinnati Children's Hospital Medical Center, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Mei Xin
- Department of Pediatrics, University of Cincinnati & Cincinnati Children's Hospital Medical Center, USA
| | - Jiukuan Hao
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA.
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Ni R, Cao T, Xiong S, Ma J, Fan GC, Lacefield JC, Lu Y, Le Tissier S, Peng T. Therapeutic inhibition of mitochondrial reactive oxygen species with mito-TEMPO reduces diabetic cardiomyopathy. Free Radic Biol Med 2016; 90:12-23. [PMID: 26577173 PMCID: PMC5066872 DOI: 10.1016/j.freeradbiomed.2015.11.013] [Citation(s) in RCA: 185] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 10/27/2015] [Accepted: 11/09/2015] [Indexed: 02/08/2023]
Abstract
AIMS The mitochondria are important sources of reactive oxygen species (ROS) in the heart. Mitochondrial ROS production has been implicated in the pathogenesis of diabetic cardiomyopathy, suggesting that therapeutic strategies specifically targeting mitochondrial ROS may have benefit in this disease. We investigated the therapeutic effects of mitochondria-targeted antioxidant mito-TEMPO on diabetic cardiomyopathy. METHODS The mitochondria-targeted antioxidant mito-TEMPO was administrated after diabetes onset in a mouse model of streptozotocin-induced type-1 diabetes and type-2 diabetic db/db mice. Cardiac adverse changes were analyzed and myocardial function assessed. Cultured adult cardiomyocytes were stimulated with high glucose, and mitochondrial superoxide generation and cell death were measured. RESULTS Incubation with high glucose increased mitochondria superoxide generation in cultured cardiomyocytes, which was prevented by mito-TEMPO. Co-incubation with mito-TEMPO abrogated high glucose-induced cell death. Mitochondrial ROS generation, and intracellular oxidative stress levels were induced in both type-1 and type-2 diabetic mouse hearts. Daily injection of mito-TEMPO for 30 days inhibited mitochondrial ROS generation, prevented intracellular oxidative stress levels, decreased apoptosis and reduced myocardial hypertrophy in diabetic hearts, leading to improvement of myocardial function in both type-1 and type-2 diabetic mice. Incubation with mito-TEMPO or inhibition of Nox2-containing NADPH oxidase prevented oxidative stress levels and cell death in high glucose-stimulated cardiomyocytes. Mechanistic study revealed that the protective effects of mito-TEMPO were associated with down-regulation of ERK1/2 phosphorylation. CONCLUSIONS Therapeutic inhibition of mitochondrial ROS by mito-TEMPO reduced adverse cardiac changes and mitigated myocardial dysfunction in diabetic mice. Thus, mitochondria-targeted antioxidants may be an effective therapy for diabetic cardiac complications.
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Affiliation(s)
- Rui Ni
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China; Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, Ont., Canada N6A 4G5; Departments of Medicine and Pathology, The University of Western Ontario, London, Ont., Canada N6A 4G5
| | - Ting Cao
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China
| | - Sidong Xiong
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China
| | - Jian Ma
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, Ont., Canada N6A 4G5; Departments of Medicine and Pathology, The University of Western Ontario, London, Ont., Canada N6A 4G5
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - James C Lacefield
- Electrical and Computer Engineering, Medical Biophysics, Robarts Research Institute, University of Western Ontario, London, Ont., Canada N6A 4G5
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health; Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Sydney Le Tissier
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, Ont., Canada N6A 4G5
| | - Tianqing Peng
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province 215123, China; Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, VRL 6th Floor, A6-140, 800 Commissioners Road, London, Ont., Canada N6A 4G5; Departments of Medicine and Pathology, The University of Western Ontario, London, Ont., Canada N6A 4G5.
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Ni R, Zheng D, Xiong S, Hill DJ, Sun T, Gardiner RB, Fan GC, Lu Y, Abel ED, Greer PA, Peng T. Mitochondrial Calpain-1 Disrupts ATP Synthase and Induces Superoxide Generation in Type 1 Diabetic Hearts: A Novel Mechanism Contributing to Diabetic Cardiomyopathy. Diabetes 2016; 65:255-68. [PMID: 26470784 PMCID: PMC4686953 DOI: 10.2337/db15-0963] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 10/07/2015] [Indexed: 02/05/2023]
Abstract
Calpain plays a critical role in cardiomyopathic changes in type 1 diabetes (T1D). This study investigated how calpain regulates mitochondrial reactive oxygen species (ROS) generation in the development of diabetic cardiomyopathy. T1D was induced in transgenic mice overexpressing calpastatin, in mice with cardiomyocyte-specific capn4 deletion, or in their wild-type littermates by injection of streptozotocin. Calpain-1 protein and activity in mitochondria were elevated in diabetic mouse hearts. The increased mitochondrial calpain-1 was associated with an increase in mitochondrial ROS generation and oxidative damage and a reduction in ATP synthase-α (ATP5A1) protein and ATP synthase activity. Genetic inhibition of calpain or upregulation of ATP5A1 increased ATP5A1 and ATP synthase activity, prevented mitochondrial ROS generation and oxidative damage, and reduced cardiomyopathic changes in diabetic mice. High glucose concentration induced ATP synthase disruption, mitochondrial superoxide generation, and cell death in cardiomyocytes, all of which were prevented by overexpression of mitochondria-targeted calpastatin or ATP5A1. Moreover, upregulation of calpain-1 specifically in mitochondria induced the cleavage of ATP5A1, superoxide generation, and apoptosis in cardiomyocytes. In summary, calpain-1 accumulation in mitochondria disrupts ATP synthase and induces ROS generation, which promotes diabetic cardiomyopathy. These findings suggest a novel mechanism for and may have significant implications in diabetic cardiac complications.
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Affiliation(s)
- Rui Ni
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, China Department of Medicine, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada Department of Pathology, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Dong Zheng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, China Department of Medicine, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada Department of Pathology, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Sidong Xiong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, China
| | - David J Hill
- Department of Medicine, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Tao Sun
- Department of Medicine, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Richard B Gardiner
- Department of Biology, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - E Dale Abel
- Division of Endocrinology and Metabolism, Fraternal Order of Eagles Diabetes Research Center, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA
| | - Peter A Greer
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, China Department of Medicine, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada Department of Pathology, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
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50
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Zheng D, Yu Y, Li M, Wang G, Chen R, Fan GC, Martin C, Xiong S, Peng T. Inhibition of MicroRNA 195 Prevents Apoptosis and Multiple-Organ Injury in Mouse Models of Sepsis. J Infect Dis 2015; 213:1661-70. [PMID: 26704614 DOI: 10.1093/infdis/jiv760] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 12/16/2015] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND MicroRNAs (miRs) are a class of short RNA molecules, which negatively regulate gene expression. The levels of circulating miR-15 family members are elevated in septic patients and may be associated with septic death. This study investigated whether inhibition of miR-195, a member of the miR-15 family, provided beneficial effects in sepsis. METHODS AND RESULTS Sepsis was induced by injection of feces into the peritoneum in mice. miR-195 was upregulated in the lung and liver of septic mice. Silencing of miR-195 increased the protein levels of BCL-2, Sirt1, and Pim-1; prevented apoptosis; reduced liver and lung injury; and improved the survival in septic mice. Silencing of miR-195 provided similar protection in lipopolysaccharide-induced endotoxemic mice. In endothelial cells, upregulation of miR-195 induced apoptosis, and inhibition of miR-195 prevented lipopolysaccharide-induced apoptosis. miR-195 repressed expression of its protein targets, BCL-2, Sirt1, and Pim-1. Furthermore, overexpression of Pim-1 prevented apoptosis induced by lipopolysaccharide and miR-195 mimic. Inhibition of Pim-1 attenuated the protective effects of miR-195 silencing in septic mice. CONCLUSIONS Silencing of miR-195 reduced multiple-organ injury and improved the survival in sepsis, and the protective effects of miR-195 inhibition were associated with upregulation of Bcl-2, Sirt1, and Pim-1. Thus, inhibition of miR-195 may represent a new therapeutic approach for sepsis.
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Affiliation(s)
- Dong Zheng
- Jiangsu Key Laboratory of Infection and Immunity, Institutes for Biology and Medical Sciences, Soochow University, Suzhou Lawson Health Research Institute Department of Medicine Department of Pathology, University of Western Ontario, London, Canada
| | - Yong Yu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, China
| | - Minghui Li
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, China
| | - Grace Wang
- Department of Pathology, University of Western Ontario, London, Canada
| | - Ruizhen Chen
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, China
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Ohio
| | | | - Sidong Xiong
- Jiangsu Key Laboratory of Infection and Immunity, Institutes for Biology and Medical Sciences, Soochow University, Suzhou
| | - Tianqing Peng
- Jiangsu Key Laboratory of Infection and Immunity, Institutes for Biology and Medical Sciences, Soochow University, Suzhou Lawson Health Research Institute Department of Medicine Department of Pathology, University of Western Ontario, London, Canada
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