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Wang YF, An ZY, Li JW, Dong ZK, Jin WL. MG53/TRIM72: multi-organ repair protein and beyond. Front Physiol 2024; 15:1377025. [PMID: 38681139 PMCID: PMC11046001 DOI: 10.3389/fphys.2024.1377025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 04/01/2024] [Indexed: 05/01/2024] Open
Abstract
MG53, a member of the tripartite motif protein family, possesses multiple functionalities due to its classic membrane repair function, anti-inflammatory ability, and E3 ubiquitin ligase properties. Initially recognized for its crucial role in membrane repair, the therapeutic potential of MG53 has been extensively explored in various diseases including muscle injury, myocardial damage, acute lung injury, and acute kidney injury. However, further research has revealed that the E3 ubiquitin ligase characteristics of MG53 also contribute to the pathogenesis of certain conditions such as diabetic cardiomyopathy, insulin resistance, and metabolic syndrome. Moreover, recent studies have highlighted the anti-tumor effects of MG53 in different types of cancer, such as small cell lung cancer, liver cancer, and colorectal cancer; these effects are closely associated with their E3 ubiquitin ligase activities. In summary, MG53 is a multifunctional protein that participates in important physiological and pathological processes of multiple organs and is a promising therapeutic target for various human diseases. MG53 plays a multi-organ protective role due to its membrane repair function and its exertion of anti-tumor effects due to its E3 ubiquitin ligase properties. In addition, the controversial aspect of MG53's E3 ubiquitin ligase properties potentially causing insulin resistance and metabolic syndrome necessitates further cross-validation for clarity.
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Affiliation(s)
- Yong-Fei Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zi-Yi An
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou, China
| | - Jian-Wen Li
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zi-Kai Dong
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou, China
| | - Wei-Lin Jin
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou, China
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2
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Liu SM, Zhao Q, Li WJ, Zhao JQ. Advances in the Study of MG53 in Cardiovascular Disease. Int J Gen Med 2023; 16:6073-6082. [PMID: 38152078 PMCID: PMC10752033 DOI: 10.2147/ijgm.s435030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 11/29/2023] [Indexed: 12/29/2023] Open
Abstract
Cardiovascular diseases represent a global health crisis, and understanding the intricate molecular mechanisms underlying cardiac pathology is crucial for developing effective diagnostic and therapeutic strategies. Mitsugumin-53 (MG53) plays a pivotal role in cell membrane repair, has emerged as a multifaceted player in cardiovascular health. MG53, also known as TRIM72, is primarily expressed in cardiac and skeletal muscle and actively participates in membrane repair processes essential for maintaining cardiomyocyte viability. It promotes k-ion currents, ensuring action potential integrity, and actively engages in repairing myocardial and mitochondrial membranes, preserving cardiac function in the face of oxidative stress. This study discusses the dual impact of MG53 on cardiac health, highlighting its cardioprotective role during ischemia/reperfusion injury, its modulation of cardiac arrhythmias, and its influence on cardiomyopathy. MG53's regulation of metabolic pathways, such as lipid metabolism, underlines its role in diabetic cardiomyopathy, while its potential to mitigate the effects of various cardiac disorders, including those induced by antipsychotic medications and alcohol consumption, warrants further exploration. Furthermore, we examine MG53's diagnostic potential as a biomarker for cardiac injury. Research has shown that MG53 levels correlate with cardiomyocyte damage and may predict major adverse cardiovascular events, highlighting its value as a biomarker. Additionally, exogenous recombinant human MG53 (rhMG53) emerges as a promising therapeutic option, demonstrating its ability to reduce infarct size, inhibit apoptosis, and attenuate fibrotic responses. In summary, MG53's diagnostic and therapeutic potential in cardiovascular diseases presents an exciting avenue for improved patient care and outcomes.
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Affiliation(s)
- Shan-Mei Liu
- Bayannur Hospital Department of Cardiology, Bayannur City, Inner Mongolia, 015000, People’s Republic of China
| | - Qin Zhao
- Bayannur Hospital Department of Cardiology, Bayannur City, Inner Mongolia, 015000, People’s Republic of China
| | - Wen-Jun Li
- Tangshan Central Hospital, Tangshan, Hebei, 063008, People’s Republic of China
| | - Jian-Quan Zhao
- Bayannur Hospital Department of Cardiology, Bayannur City, Inner Mongolia, 015000, People’s Republic of China
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Zhuang J, Cheng G, Huang J, Guo H, Lai Y, Wang J, Shan Z, Zheng S. Rosuvastatin exerts cardioprotective effect in lipopolysaccharide-mediated injury of cardiomyocytes in an MG53-dependent manner. BMC Cardiovasc Disord 2022; 22:69. [PMID: 35196979 PMCID: PMC8865731 DOI: 10.1186/s12872-022-02458-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 01/04/2022] [Indexed: 12/03/2022] Open
Abstract
Background Myocarditis is a cardiomyopathy associated with the inflammatory response. Rosuvastatin (RS) demonstrates cardioprotective effect in the clinical setting, although its cellular and molecular mechanisms in ameliorating myocarditis are largely unknown. MG53 (muscle-specific E3 ligase Mitsugumin 53), a newly identified striated muscle-specific protein, is involved in skeletal muscle membrane repair. We aimed to explore whether RS mediated the repair of cardiomyocytes in an MG53-dependent manner. Methods The RS-induced upregulation of MG53 was determined using RT-qPCR and western blotting. A lipopolysaccharide (LPS)-induced cell inflammatory model was constructed using rat cardiac muscle cell H9C2. Inflammatory injury was evaluated according to the alterations of cell viability, mitochondrial membrane potential, cell apoptosis, and expression of pro-inflammatory cytokines (interleukin-1β, interleukin-6, tumor necrosis factor-α, and monocyte chemoattractant protein-1). Small interfering RNAs (siRNAs) were used to silence MG53. The cardioprotective effect of RS and the inhibition of this protection by MG53 silence were evaluated in the forementioned in vitro model. The underlying mechanism was finally investigated using western blotting to detected the expressions of apoptotic markers (Bcl-2, Bax, Cleaved caspase-9, Cleaved caspase-3), cell cycle regulatory factors (Cyclin A, Cyclin E1, Cyclin D1, CDK2), and components involved in NF-κB signaling pathway (p-IκBa, Iκba, p-p65, p65). Results RS ameliorated LPS-induced inflammatory injury. RS upregulated the expression of MG53. MG53 was crucial for the RS-mediated repair response in vitro. Ablation of MG53 inhibited the RS-mediated protective effect. Furthermore, RS and MG53 interact in multiple signaling pathways to modulate recovery. Conclusion RS exerts cardioprotective effect in an MG53-dependent manner. MG53 may serve as a novel drug target for myocarditis treatment. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02458-3.
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Affiliation(s)
- Jiawei Zhuang
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Gangyi Cheng
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Jian Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Hongwei Guo
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Yiquan Lai
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Jiamao Wang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Zhonggui Shan
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China.
| | - Shaoyi Zheng
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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4
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Zhong W, Benissan-Messan DZ, Ma J, Cai C, Lee PHU. Cardiac effects and clinical applications of MG53. Cell Biosci 2021; 11:115. [PMID: 34183055 PMCID: PMC8240287 DOI: 10.1186/s13578-021-00629-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/11/2021] [Indexed: 12/18/2022] Open
Abstract
Heart disease remains the leading cause of mortality globally, so further investigation is required to identify its underlying mechanisms and potential targets for treatment and prevention. Mitsugumin 53 (MG53), also known as TRIM72, is a TRIM family protein that was found to be involved in cell membrane repair and primarily found in striated muscle. Its role in skeletal muscle regeneration and myogenesis has been well documented. However, accumulating evidence suggests that MG53 has a potentially protective role in heart tissue, including in ischemia/reperfusion injury of the heart, cardiomyocyte membrane injury repair, and atrial fibrosis. This review summarizes the regulatory role of MG53 in cardiac tissues, current debates regarding MG53 in diabetes and diabetic cardiomyopathy, as well as highlights potential clinical applications of MG53 in treating cardiac pathologies.
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Affiliation(s)
- Weina Zhong
- Department of Surgery, The Ohio State University, Columbus, OH, USA
| | | | - Jianjie Ma
- Department of Surgery, The Ohio State University, Columbus, OH, USA
| | - Chuanxi Cai
- Department of Surgery, The Ohio State University, Columbus, OH, USA.
| | - Peter H U Lee
- Department of Surgery, The Ohio State University, Columbus, OH, USA.
- Department of Pathology and Laboratory Medicine, Brown University, Campus Box G-E5, 70 Ship Street, Providence, RI, 02912, USA.
- Department of Cardiothoracic Surgery, Southcoast Health, Fall River, MA, USA.
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Jiang W, Liu M, Gu C, Ma H. The Pivotal Role of Mitsugumin 53 in Cardiovascular Diseases. Cardiovasc Toxicol 2020; 21:2-11. [PMID: 33006052 DOI: 10.1007/s12012-020-09609-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/23/2020] [Indexed: 12/28/2022]
Abstract
The MG53 (also known as TRIM72) is a conserved, muscle-specific tripartite motif family protein that is abundantly expressed in cardiac or skeletal muscle and present in circulation. Recently, the MG53 had been hypothesized to serve a dual role in the heart: involving in repairing cell membranes that protect myocardial function while acting as an E3 ligase to trigger insulin resistance and cardiovascular complications. This review discusses the roles of MG53 in cardiac physiological function with emphasis on MG53 protective function in the heart and its negative impact on the myocardium due to the continuous elevation of MG53. Besides, this work reviewed the significance of MG53 as a potential therapeutic in human cardiovascular diseases. Despite the expression of MG53 being rare in the human, thus exogenous MG53 can potentially be a new treatment for human cardiovascular diseases. Notably, the specific mechanism of MG53 in cardiovascular diseases remains elusive.
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Affiliation(s)
- Wenhua Jiang
- Institute of Medical Research, Northweastern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Manling Liu
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Chunhu Gu
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
| | - Heng Ma
- Institute of Medical Research, Northweastern Polytechnical University, Xi'an, 710072, People's Republic of China.
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6
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Zhang JR, Li XX, Hu WN, Li CY. Emerging Role of TRIM Family Proteins in Cardiovascular Disease. Cardiology 2020; 145:390-400. [PMID: 32305978 DOI: 10.1159/000506150] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/23/2020] [Indexed: 11/19/2022]
Abstract
Ubiquitination is one of the basic mechanisms of cell protein homeostasis and degradation and is accomplished by 3 enzymes, E1, E2, and E3. Tripartite motif-containing proteins (TRIMs) constitute the largest subfamily of RING E3 ligases, with >70 current members in humans and mice. These members are involved in multiple biological processes, including growth, differentiation, and apoptosis as well as disease and tumorigenesis. Accumulating evidence has shown that many TRIM proteins are associated with various cardiac processes and pathologies, such as heart development, signal transduction, protein degradation, autophagy mediation, ion channel regulation, congenital heart disease, and cardiomyopathies. In this review, we provide an overview of the TRIM family and discuss its involvement in the regulation of cardiac proteostasis and pathophysiology and its potential therapeutic implications.
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Affiliation(s)
- Jing-Rui Zhang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xin-Xin Li
- Department of Respiratory Medicine, Tangshan People's Hospital, Tangshan, China
| | - Wan-Ning Hu
- Department of Cardiology, Laboratory of Molecular Biology, Tangshan Gongren Hospital, Tangshan, China,
| | - Chang-Yi Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Department of Cardiology, Laboratory of Molecular Biology, Tangshan Gongren Hospital, Tangshan, China
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Liu W, Wang G, Zhang C, Ding W, Cheng W, Luo Y, Wei C, Liu J. MG53, A Novel Regulator of KChIP2 and I to,f, Plays a Critical Role in Electrophysiological Remodeling in Cardiac Hypertrophy. Circulation 2020; 139:2142-2156. [PMID: 30760025 DOI: 10.1161/circulationaha.118.029413] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND KChIP2 (K+ channel interacting protein) is the auxiliary subunit of the fast transient outward K+ current ( Ito,f) in the heart, and insufficient KChIP2 expression induces Ito,f downregulation and arrhythmogenesis in cardiac hypertrophy. Studies have shown muscle-specific mitsugumin 53 (MG53) has promiscuity of function in the context of normal and diseased heart. This study investigates the possible roles of cardiac MG53 in regulation of KChIP2 expression and Ito,f, and the arrhythmogenic potential in hypertrophy. METHODS MG53 expression is manipulated by genetic ablation of MG53 in mice and adenoviral overexpression or knockdown of MG53 by RNA interference in cultured neonatal rat ventricular myocytes. Cardiomyocyte hypertrophy is produced by phenylephrine stimulation in neonatal rat ventricular myocytes, and pressure overload-induced mouse cardiac hypertrophy is produced by transverse aortic constriction. RESULTS KChIP2 expression and Ito,f density are downregulated in hearts from MG53-knockout mice and MG53-knockdown neonatal rat ventricular myocytes, but upregulated in MG53-overexpressing cells. In phenylephrine-induced cardiomyocyte hypertrophy, MG53 expression is reduced with concomitant downregulation of KChIP2 and Ito,f, which can be reversed by MG53 overexpression, but exaggerated by MG53 knockdown. MG53 knockout enhances Ito,f remodeling and action potential duration prolongation and increases susceptibility to ventricular arrhythmia in mouse cardiac hypertrophy. Mechanistically, MG53 regulates NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) activity and subsequently controls KChIP2 transcription. Chromatin immunoprecipitation demonstrates NF-κB protein has interaction with KChIP2 gene. MG53 overexpression decreases, whereas MG53 knockdown increases NF-κB enrichment at the 5' regulatory region of KChIP2 gene. Normalizing NF-κB activity reverses the alterations in KChIP2 in MG53-overexpressing or knockdown cells. Coimmunoprecipitation and Western blotting assays demonstrate MG53 has physical interaction with TAK1 (transforming growth factor-b [TGFb]-activated kinase 1) and IκBα (nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha), critical components of the NF-κB pathway. CONCLUSIONS These findings establish MG53 as a novel regulator of KChIP2 and Ito,f by modulating NF-κB activity and reveal its critical role in electrophysiological remodeling in cardiac hypertrophy.
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Affiliation(s)
- Wenjuan Liu
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathophysiology (W.L., G.W., W.C., Y.L., J.L.), School of Medicine, Shenzhen University, China
| | - Gang Wang
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathophysiology (W.L., G.W., W.C., Y.L., J.L.), School of Medicine, Shenzhen University, China
| | - Cuicui Zhang
- Prenatal Diagnosis Center, The Women and Children Hospital of Guangdong Province, Guangzhou, China (C.Z.)
| | - Wenwen Ding
- Department of Basic Medicine, School of Medicine, Jingchu University of Technology, Jingmen, China (W.D.)
| | - Wanwen Cheng
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathophysiology (W.L., G.W., W.C., Y.L., J.L.), School of Medicine, Shenzhen University, China
| | - Yizhi Luo
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathophysiology (W.L., G.W., W.C., Y.L., J.L.), School of Medicine, Shenzhen University, China
| | - Chaoliang Wei
- Department of Cell Biology and Medical Genetics (C.W.), School of Medicine, Shenzhen University, China
| | - Jie Liu
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathophysiology (W.L., G.W., W.C., Y.L., J.L.), School of Medicine, Shenzhen University, China
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8
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Li X, Jiang M, Tan T, Narasimhulu CA, Xiao Y, Hao H, Cui Y, Zhang J, Liu L, Yang C, Li Y, Ma J, Verfaillie CM, Parthasarathy S, Zhu H, Liu Z. N-acetylcysteine prevents oxidized low-density lipoprotein-induced reduction of MG53 and enhances MG53 protective effect on bone marrow stem cells. J Cell Mol Med 2019; 24:886-898. [PMID: 31742908 PMCID: PMC6933383 DOI: 10.1111/jcmm.14798] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/01/2019] [Accepted: 10/07/2019] [Indexed: 12/12/2022] Open
Abstract
MG53 is an important membrane repair protein and partially protects bone marrow multipotent adult progenitor cells (MAPCs) against oxidized low‐density lipoprotein (ox‐LDL). The present study was to test the hypothesis that the limited protective effect of MG53 on MAPCs was due to ox‐LDL‐induced reduction of MG53. MAPCs were cultured with and without ox‐LDL (0‐20 μg/mL) for up to 48 hours with or without MG53 and antioxidant N‐acetylcysteine (NAC). Serum MG53 level was measured in ox‐LDL‐treated mice with or without NAC treatment. Ox‐LDL induced significant membrane damage and substantially impaired MAPC survival with selective inhibition of Akt phosphorylation. NAC treatment effectively prevented ox‐LDL‐induced reduction of Akt phosphorylation without protecting MAPCs against ox‐LDL. While having no effect on Akt phosphorylation, MG53 significantly decreased ox‐LDL‐induced membrane damage and partially improved the survival, proliferation and apoptosis of MAPCs in vitro. Ox‐LDL significantly decreased MG53 level in vitro and serum MG53 level in vivo without changing MG53 clearance. NAC treatment prevented ox‐LDL‐induced MG53 reduction both in vitro and in vivo. Combined NAC and MG53 treatment significantly improved MAPC survival against ox‐LDL. These data suggested that NAC enhanced the protective effect of MG53 on MAPCs against ox‐LDL through preventing ox‐LDL‐induced reduction of MG53.
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Affiliation(s)
- Xin Li
- Department of Endocrinology, The First Affiliated Hospital, Dalian Medical University, Dalian, China.,Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Meng Jiang
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Tao Tan
- Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Chandrakala A Narasimhulu
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Yuan Xiao
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Hong Hao
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Yuqi Cui
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Jia Zhang
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Lingjuan Liu
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Chunlin Yang
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Yixi Li
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Jianjie Ma
- Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | | | - Sampath Parthasarathy
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Hua Zhu
- Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Zhenguo Liu
- Center for Precision Medicine and Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
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Chao RY, Cheng CH, Wu SN, Chen PC. Defective trafficking of Kv2.1 channels in MPTP-induced nigrostriatal degeneration. J Neurochem 2018; 144:483-497. [PMID: 29265365 DOI: 10.1111/jnc.14282] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/13/2017] [Accepted: 12/07/2017] [Indexed: 12/19/2022]
Abstract
Intracellular protein trafficking is tightly regulated, and improper trafficking might be the fundamental provocateur for human diseases including neurodegeneration. In neurons, protein trafficking to and from the plasma membrane affects synaptic plasticity. Voltage-gated potassium channel 2.1 (Kv2.1) is a predominant delayed rectifier potassium (K+ ) current, and electrical activity patterns of dopamine (DA) neurons within the substantia nigra are generated and modulated by the orchestrated function of different ion channels. The pathological hallmark of Parkinson's disease (PD) is the progressive loss of these DA neurons, resulting in the degeneration of striatal dopaminergic terminals. However, whether trafficking of Kv2.1 channels contributes to PD remains unclear. In this study, we demonstrated that MPTP/MPP+ increases the surface expression of the Kv2.1 channel and causes nigrostriatal degeneration by using a subchronic MPTP mouse model. The inhibition of the Kv2.1 channel by using a specific blocker, guangxitoxin-1E, protected nigrostriatal projections against MPTP/MPP+ insult and thus facilitated the recovery of motor coordination. These findings highlight the importance of trafficking of Kv2.1 channels in the pathogenesis of PD.
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Affiliation(s)
- Ru-Yi Chao
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Hui Cheng
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Nan Wu
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pei-Chun Chen
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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10
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Treatment with Recombinant Human MG53 Protein Increases Membrane Integrity in a Mouse Model of Limb Girdle Muscular Dystrophy 2B. Mol Ther 2017; 25:2360-2371. [PMID: 28750735 DOI: 10.1016/j.ymthe.2017.06.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 06/23/2017] [Accepted: 06/28/2017] [Indexed: 12/20/2022] Open
Abstract
Limb girdle muscular dystrophy type 2B (LGMD2B) and other dysferlinopathies are degenerative muscle diseases that result from mutations in the dysferlin gene and have limited treatment options. The dysferlin protein has been linked to multiple cellular functions including a Ca2+-dependent membrane repair process that reseals disruptions in the sarcolemmal membrane. Recombinant human MG53 protein (rhMG53) can increase the membrane repair process in multiple cell types both in vitro and in vivo. Here, we tested whether rhMG53 protein can improve membrane repair in a dysferlin-deficient mouse model of LGMD2B (B6.129-Dysftm1Kcam/J). We found that rhMG53 can increase the integrity of the sarcolemmal membrane of isolated muscle fibers and whole muscles in a Ca2+-independent fashion when assayed by a multi-photon laser wounding assay. Intraperitoneal injection of rhMG53 into mice before acute eccentric treadmill exercise can decrease the release of intracellular enzymes from skeletal muscle and decrease the entry of immunoglobulin G and Evans blue dye into muscle fibers in vivo. These results indicate that short-term rhMG53 treatment can ameliorate one of the underlying defects in dysferlin-deficient muscle by increasing sarcolemmal membrane integrity. We also provide evidence that rhMG53 protein increases membrane integrity independently of the canonical dysferlin-mediated, Ca2+-dependent pathway known to be important for sarcolemmal membrane repair.
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11
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Nishtala K, Phong TQ, Steil L, Sauter M, Salazar MG, Kandolf R, Felix SB, Völker U, Klingel K, Hammer E. Proteomic analyses of age related changes in A.BY/SnJ mouse hearts. Proteome Sci 2013; 11:29. [PMID: 23816347 PMCID: PMC3704963 DOI: 10.1186/1477-5956-11-29] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 06/11/2013] [Indexed: 11/25/2022] Open
Abstract
Background A.BY/SnJ mice are used to study pathological alterations in the heart due to enteroviral infections. Since age is a well-known factor influencing the susceptibility of mice to infection, response to stress and manifestation of cardiovascular diseases, the myocardial proteome of A.BY/SnJ mice aged 1 and 4 months was comparatively studied using two dimensional-differential in-gel electrophoresis (2D-DIGE) and liquid chromatography tandem mass spectrometry (LC-MS/MS). Results Complementary analyses by 2D-DIGE and gel-free LC-MS/MS revealed 96 distinct proteins displaying age associated alterations in their levels. Proteins related to protein transport, and transport chain, lipid metabolism and fatty acid transport showed significant changes in 4 months old mouse hearts compared to juvenile hearts. Proteins involved in lipid metabolism and transport were identified at significantly higher levels in older mice and dysregulation of proteins of the respiratory transport chain were observed. Conclusion The current proteomics study discloses age dependent changes occurring in the hearts already in young mice of the strain A.BY/SnJ. Besides alterations in protein transport, we provide evidence that a decrease of ATP synthase in murine hearts starts already in the first months of life, leading to well-known low expression levels manifested in old mice thereby raising the possibility of reduced energy supply. In the first few months of murine life this seems to be compensated by an increased lipid metabolism. The functional alterations described should be considered during experimental setups in disease related studies.
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Affiliation(s)
- Krishnatej Nishtala
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung, Universitätsmedizin Greifswald, Friedrich-Ludwig-Jahn-Str. 15A, 17487 Greifswald, Germany
| | - Truong Quoc Phong
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung, Universitätsmedizin Greifswald, Friedrich-Ludwig-Jahn-Str. 15A, 17487 Greifswald, Germany
| | - Leif Steil
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung, Universitätsmedizin Greifswald, Friedrich-Ludwig-Jahn-Str. 15A, 17487 Greifswald, Germany
| | - Martina Sauter
- Abteilung Molekulare Pathologie, Universitätsklinikum Tübingen, Tübingen, Germany
| | - Manuela Gesell Salazar
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung, Universitätsmedizin Greifswald, Friedrich-Ludwig-Jahn-Str. 15A, 17487 Greifswald, Germany
| | - Reinhard Kandolf
- Abteilung Molekulare Pathologie, Universitätsklinikum Tübingen, Tübingen, Germany
| | - Stephan B Felix
- Klinik für Innere Medizin B, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Uwe Völker
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung, Universitätsmedizin Greifswald, Friedrich-Ludwig-Jahn-Str. 15A, 17487 Greifswald, Germany
| | - Karin Klingel
- Abteilung Molekulare Pathologie, Universitätsklinikum Tübingen, Tübingen, Germany
| | - Elke Hammer
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung, Universitätsmedizin Greifswald, Friedrich-Ludwig-Jahn-Str. 15A, 17487 Greifswald, Germany
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Nishi M, Aoyama F, Kisa F, Zhu H, Sun M, Lin P, Ohta H, Van B, Yamamoto S, Kakizawa S, Sakai H, Ma J, Sawaguchi A, Takeshima H. TRIM50 protein regulates vesicular trafficking for acid secretion in gastric parietal cells. J Biol Chem 2012; 287:33523-32. [PMID: 22872646 DOI: 10.1074/jbc.m112.370551] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Of the TRIM/RBCC family proteins taking part in a variety of cellular processes, TRIM50 is a stomach-specific member with no defined biological function. Our biochemical data demonstrated that TRIM50 is specifically expressed in gastric parietal cells and is predominantly localized in the tubulovesicular and canalicular membranes. In cultured cells ectopically expressing GFP-TRIM50, confocal microscopic imaging revealed dynamic movement of TRIM50-associated vesicles in a phosphoinositide 3-kinase-dependent manner. A protein overlay assay detected preferential binding of the PRY-SPRY domain from the TRIM50 C-terminal region to phosphatidylinositol species, suggesting that TRIM50 is involved in vesicular dynamics by sensing the phosphorylated state of phosphoinositol lipids. Trim50 knock-out mice retained normal histology in the gastric mucosa but exhibited impaired secretion of gastric acid. In response to histamine, Trim50 knock-out parietal cells generated deranged canaliculi, swollen microvilli lacking actin filaments, and excess multilamellar membrane complexes. Therefore, TRIM50 seems to play an essential role in tubulovesicular dynamics, promoting the formation of sophisticated canaliculi and microvilli during acid secretion in parietal cells.
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Affiliation(s)
- Miyuki Nishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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13
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Yamazaki D, Tabara Y, Kita S, Hanada H, Komazaki S, Naitou D, Mishima A, Nishi M, Yamamura H, Yamamoto S, Kakizawa S, Miyachi H, Yamamoto S, Miyata T, Kawano Y, Kamide K, Ogihara T, Hata A, Umemura S, Soma M, Takahashi N, Imaizumi Y, Miki T, Iwamoto T, Takeshima H. TRIC-A channels in vascular smooth muscle contribute to blood pressure maintenance. Cell Metab 2011; 14:231-41. [PMID: 21803293 DOI: 10.1016/j.cmet.2011.05.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 04/09/2011] [Accepted: 05/12/2011] [Indexed: 01/11/2023]
Abstract
TRIC channel subtypes, namely TRIC-A and TRIC-B, are intracellular monovalent cation channels postulated to mediate counter-ion movements facilitating physiological Ca(2+) release from internal stores. Tric-a-knockout mice developed hypertension during the daytime due to enhanced myogenic tone in resistance arteries. There are two Ca(2+) release mechanisms in vascular smooth muscle cells (VSMCs); incidental opening of ryanodine receptors (RyRs) generates local Ca(2+) sparks to induce hyperpolarization, while agonist-induced activation of inositol trisphosphate receptors (IP(3)Rs) evokes global Ca(2+) transients causing contraction. Tric-a gene ablation inhibited RyR-mediated hyperpolarization signaling to stimulate voltage-dependent Ca(2+) influx, and adversely enhanced IP(3)R-mediated Ca(2+) transients by overloading Ca(2+) stores in VSMCs. Moreover, association analysis identified single-nucleotide polymorphisms (SNPs) around the human TRIC-A gene that increase hypertension risk and restrict the efficiency of antihypertensive drugs. Therefore, TRIC-A channels contribute to maintaining blood pressure, while TRIC-A SNPs could provide biomarkers for constitutional diagnosis and personalized medical treatment of essential hypertension.
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Affiliation(s)
- Daiju Yamazaki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
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Weisleder N, Takeshima H, Ma J. Mitsugumin 53 (MG53) facilitates vesicle trafficking in striated muscle to contribute to cell membrane repair. Commun Integr Biol 2011; 2:225-6. [PMID: 19641737 DOI: 10.4161/cib.2.3.8077] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2009] [Accepted: 02/02/2009] [Indexed: 11/19/2022] Open
Abstract
Repair of the plasma membrane following damage is an important aspect of normal cellular physiology, and disruption of this process is observed in many pathologic states. In a recent series of publications, we resolved that Mitsugumin 53 (MG53) is a novel, muscle-specific member of the tripartite motif/RING B-box Coiled Coil (TRIM/RBCC) family of proteins (TRIM72) that contributes to vesicle trafficking in the course of normal cellular physiology. MG53 can bind phosphatidylserine (PS) with some specificity, and interacts with caveolin-3 (Cav-3) as part of its function in vesicle trafficking. As part of the response to membrane damage in muscle cells, MG53 acts in an oxidation-dependent manner to facilitate vesicle translocation to the sites of membrane injury where these vesicles are involved in patching the membrane. Here we discuss these findings and examine the implications of this work in the field of membrane repair. Further discussion is provided about potential therapeutic applications for MG53.
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Affiliation(s)
- Noah Weisleder
- Department of Physiology and Biophysics; Robert Wood Johnson Medical School; Piscataway, NJ USA
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