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Guan L, Yu Z, Che Z, Zhang H, Yu Y, Yang D, Qian D, Chen R, Yu M. Experimental diabetes exacerbates autophagic flux impairment during myocardial I/R injury through calpain-mediated cleavage of Atg5/LAMP2. J Cell Mol Med 2022; 27:232-245. [PMID: 36562207 PMCID: PMC9843523 DOI: 10.1111/jcmm.17642] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/24/2022] Open
Abstract
To explore the role of autophagic flux in the increased susceptibility of the experimental diabetic heart to ischaemia-reperfusion (I/R) injury, we established STZ-induced diabetic mice and performed I/R. In vitro, neonatal mouse cardiomyocytes were subjected to high glucose and hypoxia/reoxygenation challenge to mimic diabetic I/R injury. We found that experimental diabetes aggravated I/R-induced injury than compared with nondiabetic mice. Autophagic flux was impaired in I/R hearts, and the impairment was exacerbated in diabetic mice subjected to I/R with defective autophagosome formation and clearance. Calpains, calcium-dependent thiol proteases, were upregulated and highly activated after I/R of diabetes, while calpain inhibition attenuated cardiac function and cell death and partially restored autophagic flux. The expression levels of Atg5 and LAMP2, two crucial autophagy-related proteins, were significantly degraded in diabetic I/R hearts, alterations that were associated with calpain activation and could be reversed by calpain inhibition. Co-overexpression of Atg5 and LAMP2 reduced myocardial injury and normalized autophagic flux. In conclusion, experimental diabetes exacerbates autophagic flux impairment of cardiomyocytes under I/R stress, resulting in worse I/R-induced injury. Calpain activation and cleavage of Atg5 and LAMP2 at least partially account for the deterioration of autophagic flux impairment.
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Affiliation(s)
- Lichun Guan
- Department of Cardiovascular Surgery, Shanghai General HospitalShanghai Jiao Tong University, School of MedicineShanghaiChina
| | - Ziqin Yu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan HospitalFudan UniversityShanghaiChina
| | - Zhimei Che
- Department of Anesthesiology, Shanghai Chest HospitalShanghai Jiao Tong University, School of MedicineShanghaiChina
| | - Hang Zhang
- Department of Cardiovascular Surgery, Nanjing First HospitalNanjing Medical UniversityNanjingChina
| | - Yong Yu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan HospitalFudan UniversityShanghaiChina
| | - Dicheng Yang
- Department of Cardiovascular Surgery, Shanghai General HospitalShanghai Jiao Tong University, School of MedicineShanghaiChina
| | - Dewei Qian
- Department of Cardiovascular Surgery, Shanghai General HospitalShanghai Jiao Tong University, School of MedicineShanghaiChina
| | - Ruizhen Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan HospitalFudan UniversityShanghaiChina
| | - Min Yu
- Department of Cardiovascular Surgery, Shanghai General HospitalShanghai Jiao Tong University, School of MedicineShanghaiChina
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2
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Chen SP, Hsu CL, Wang YF, Yang FC, Chen TH, Huang JH, Pan LLH, Fuh JL, Chang HC, Lee YL, Chang HC, Lee KH, Chang YC, Fann CSJ, Wang SJ. Genome-wide analyses identify novel risk loci for cluster headache in Han Chinese residing in Taiwan. J Headache Pain 2022; 23:147. [PMID: 36404298 PMCID: PMC9677903 DOI: 10.1186/s10194-022-01517-6] [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: 09/08/2022] [Accepted: 10/21/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Cluster headache is a highly debilitating neurological disorder with considerable inter-ethnic differences. Genome-wide association studies (GWAS) recently identified replicable genomic loci for cluster headache in Europeans, but the genetic underpinnings for cluster headache in Asians remain unclear. The objective of this study is to investigate the genetic architecture and susceptibility loci of cluster headache in Han Chinese resided in Taiwan. METHODS We conducted a two-stage genome-wide association study in a Taiwanese cohort enrolled from 2007 through 2022 to identify the genetic variants associated with cluster headache. Diagnosis of cluster headache was retrospectively ascertained with the criteria of International Classification of Headache Disorders, third edition. Control subjects were enrolled from the Taiwan Biobank. Genotyping was conducted with the Axiom Genome-Wide Array TWB chip, followed by whole genome imputation. A polygenic risk score was developed to differentiate patients from controls. Downstream analyses including gene-set and tissue enrichment, linkage disequilibrium score regression, and pathway analyses were performed. RESULTS We enrolled 734 patients with cluster headache and 9,846 population-based controls. We identified three replicable loci, with the lead SNPs being rs1556780 in CAPN2 (odds ratio = 1.59, 95% CI 1.42‒1.78, p = 7.61 × 10-16), rs10188640 in MERTK (odds ratio = 1.52, 95% CI 1.33‒1.73, p = 8.58 × 10-13), and rs13028839 in STAB2 (odds ratio = 0.63, 95% CI 0.52‒0.78, p = 2.81 × 10-8), with the latter two replicating the findings in European populations. Several previously reported genes also showed significant associations with cluster headache in our samples. Polygenic risk score differentiated patients from controls with an area under the receiver operating characteristic curve of 0.77. Downstream analyses implicated circadian regulation and immunological processes in the pathogenesis of cluster headache. CONCLUSIONS This study revealed the genetic architecture and novel susceptible loci of cluster headache in Han Chinese residing in Taiwan. Our findings support the common genetic contributions of cluster headache across ethnicities and provide novel mechanistic insights into the pathogenesis of cluster headache.
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Affiliation(s)
- Shih-Pin Chen
- grid.278247.c0000 0004 0604 5314Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Road, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan ,grid.278247.c0000 0004 0604 5314Division of Translational Research, Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan ,grid.260539.b0000 0001 2059 7017Institute of Clinical Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan ,grid.260539.b0000 0001 2059 7017School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chia-Lin Hsu
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yen-Feng Wang
- grid.278247.c0000 0004 0604 5314Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Road, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan ,grid.260539.b0000 0001 2059 7017School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Fu-Chi Yang
- grid.278244.f0000 0004 0638 9360Department of Neurology, Tri-Service General Hospital, Taipei, Taiwan
| | - Ting-Huei Chen
- grid.23856.3a0000 0004 1936 8390Department of Mathematics & Statistics, Laval University, Quebec City, QC Canada ,grid.23856.3a0000 0004 1936 8390Cervo Brain Research Centre, Quebec City, QC Canada
| | | | - Li-Ling Hope Pan
- grid.278247.c0000 0004 0604 5314Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Road, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jong-Ling Fuh
- grid.278247.c0000 0004 0604 5314Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Road, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan ,grid.260539.b0000 0001 2059 7017School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsueh-Chen Chang
- grid.278247.c0000 0004 0604 5314Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Road, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | | | | | | | | | - Cathy Shen-Jang Fann
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Shuu-Jiun Wang
- grid.278247.c0000 0004 0604 5314Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Road, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan ,grid.260539.b0000 0001 2059 7017School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
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3
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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] [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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4
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Chaturvedi P, Kalani A, Chaturvedi P, Kalani K, Verma VK, Tyagi SC. Exercise mitigates calpain induced Purkinje cell loss in diabetes. Life Sci 2022; 308:120982. [PMID: 36150460 DOI: 10.1016/j.lfs.2022.120982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/30/2022]
Abstract
Calpain-1 is a ubiquitous calcium dependent cysteine protease and found in cytoplasm as well as mitochondria. We have earlier reported that active calpain-1 is translocated from cytosol to mitochondria and activates MMP9. Calpain-1 activation is detrimental to the heart in several different ways, but there is little evidence that it can degrade Purkinje cell protein (PCP-4) and impair contractility in diabetes. Our hypothesis is that in diabetes, PCP-4 is degraded by calpain-1, causing contractile dysfunction that can be mitigated by exercise. To test this hypothesis, we recruited four groups of mice, 1) db/+ control, 2) db/+ with exercise, 3) db/db, 4) db/db with exercise. The mice were exercised on treadmill for 8 weeks as per American Veterinary Research Guidelines. Adding calcium to isolated cardiomyocytes caused them to lose shape and die. Compared with live myocytes, we observed high calpain-1 levels as well as significantly lower levels of PCP-4 and increased levels of calmodulin and calmodulin kinase II (CaMKII) in dead myocytes. We used the CRISPR/Cas9 (Clustered Regularly Interspaced Short Palindromic Repeats) plasmid to knock down calpain-1 in HL-1 myocytes which restored the levels of PCP-4 along with calmodulin and CaMKII. In vivo, we found upregulated levels of calpain-1 in db/db mice (diabetic) as compared to db/+ which were mitigated in the exercised mice. Conclusively our data strongly suggests that in diabetes there is high induction of calpain-1 with degrades PCP-4, a protein important for contractility and exercise can mitigate this.
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Affiliation(s)
- Pankaj Chaturvedi
- Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Anuradha Kalani
- Department of Physiology and Biophysics, University of Louisville, KY, USA; Department of Life Sciences and Biotechnology, Chhatrapati Shahu Ji Maharaj University, Kanpur, U.P., India.
| | - Poonam Chaturvedi
- Department of Physiotherapy, Lovely Professional University, Phagwara, Punjab, India
| | - Komal Kalani
- Department of Chemistry, Biotechnology Sciences and Engineering Building, University of Texas at San Antonio, San Antonio, TX, USA
| | - Vinod K Verma
- Department of Life Sciences and Biotechnology, Chhatrapati Shahu Ji Maharaj University, Kanpur, U.P., India
| | - Suresh C Tyagi
- Department of Physiology and Biophysics, University of Louisville, KY, USA
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5
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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] [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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6
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Heather LC, Hafstad AD, Halade GV, Harmancey R, Mellor KM, Mishra PK, Mulvihill EE, Nabben M, Nakamura M, Rider OJ, Ruiz M, Wende AR, Ussher JR. Guidelines on Models of Diabetic Heart Disease. Am J Physiol Heart Circ Physiol 2022; 323:H176-H200. [PMID: 35657616 PMCID: PMC9273269 DOI: 10.1152/ajpheart.00058.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Diabetes is a major risk factor for cardiovascular diseases, including diabetic cardiomyopathy, atherosclerosis, myocardial infarction, and heart failure. As cardiovascular disease represents the number one cause of death in people with diabetes, there has been a major emphasis on understanding the mechanisms by which diabetes promotes cardiovascular disease, and how antidiabetic therapies impact diabetic heart disease. With a wide array of models to study diabetes (both type 1 and type 2), the field has made major progress in answering these questions. However, each model has its own inherent limitations. Therefore, the purpose of this guidelines document is to provide the field with information on which aspects of cardiovascular disease in the human diabetic population are most accurately reproduced by the available models. This review aims to emphasize the advantages and disadvantages of each model, and to highlight the practical challenges and technical considerations involved. We will review the preclinical animal models of diabetes (based on their method of induction), appraise models of diabetes-related atherosclerosis and heart failure, and discuss in vitro models of diabetic heart disease. These guidelines will allow researchers to select the appropriate model of diabetic heart disease, depending on the specific research question being addressed.
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Affiliation(s)
- Lisa C Heather
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Anne D Hafstad
- Department of Medical Biology, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway
| | - Ganesh V Halade
- Department of Medicine, The University of Alabama at Birmingham, Tampa, Florida, United States
| | - Romain Harmancey
- Department of Internal Medicine, Division of Cardiology, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX, United States
| | | | - Paras K Mishra
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Erin E Mulvihill
- University of Ottawa Heart Institute, Ottawa, ON, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - Miranda Nabben
- Departments of Genetics and Cell Biology, and Clinical Genetics, Maastricht University Medical Center, CARIM School of Cardiovascular Diseases, Maastricht, the Netherlands
| | - Michinari Nakamura
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, Newark, NJ, United States
| | - Oliver J Rider
- University of Oxford Centre for Clinical Magnetic Resonance Research, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Matthieu Ruiz
- Montreal Heart Institute, Montreal, Quebec, Canada.,Department of Nutrition, Université de Montréal, Montreal, Quebec, Canada
| | - Adam R Wende
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - John R Ussher
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada.,Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada.,Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
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7
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Tirandi A, Carbone F, Montecucco F, Liberale L. The role of metabolic syndrome in sudden cardiac death risk: Recent evidence and future directions. Eur J Clin Invest 2022; 52:e13693. [PMID: 34714544 PMCID: PMC9286662 DOI: 10.1111/eci.13693] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/23/2021] [Accepted: 09/28/2021] [Indexed: 12/14/2022]
Abstract
Metabolic syndrome (MetS) is a frequent condition whose deleterious effects on the cardiovascular system are often underestimated. MetS is nowadays considered a real pandemic with an estimated prevalence of 25% in general population. Individuals with MetS are at high risk of sudden cardiac death (SCD) as this condition accounts for 50% of all cardiac deaths in such a population. Of interest, recent studies demonstrated that individuals with MetS show 70% increased risk of SCD even without previous history of coronary heart disease (CHD). However, little is known about the interplay between the two conditions. MetS is a complex disease determined by genetic predisposition, unhealthy lifestyle and ageing with deleterious effects on different organs. MetS components trigger a systemic chronic low-grade pro-inflammatory state, associated with excess of sympathetic activity, cardiac hypertrophy, arrhythmias and atherosclerosis. Thus, MetS has an important burden on the cardiovascular system as demonstrated by both preclinical and clinical evidence. The aim of this review is to summarize recent evidence concerning the association between MetS and SCD, showing possible common aetiological processes, and to indicate prospective for future studies and therapeutic targets.
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Affiliation(s)
- Amedeo Tirandi
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genoa - Italian Cardiovascular Network, Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genoa - Italian Cardiovascular Network, Genoa, Italy
| | - Luca Liberale
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,Center for Molecular Cardiology, University of Zürich, Schlieren, Switzerland
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8
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Muñoz-Córdova F, Hernández-Fuentes C, Lopez-Crisosto C, Troncoso MF, Calle X, Guerrero-Moncayo A, Gabrielli L, Chiong M, Castro PF, Lavandero S. Novel Insights Into the Pathogenesis of Diabetic Cardiomyopathy and Pharmacological Strategies. Front Cardiovasc Med 2022; 8:707336. [PMID: 35004869 PMCID: PMC8734937 DOI: 10.3389/fcvm.2021.707336] [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: 05/09/2021] [Accepted: 11/29/2021] [Indexed: 12/17/2022] Open
Abstract
Diabetic cardiomyopathy (DCM) is a severe complication of diabetes developed mainly in poorly controlled patients. In DCM, several clinical manifestations as well as cellular and molecular mechanisms contribute to its phenotype. The production of reactive oxygen species (ROS), chronic low-grade inflammation, mitochondrial dysfunction, autophagic flux inhibition, altered metabolism, dysfunctional insulin signaling, cardiomyocyte hypertrophy, cardiac fibrosis, and increased myocardial cell death are described as the cardinal features involved in the genesis and development of DCM. However, many of these features can be associated with broader cellular processes such as inflammatory signaling, mitochondrial alterations, and autophagic flux inhibition. In this review, these mechanisms are critically discussed, highlighting the latest evidence and their contribution to the pathogenesis of DCM and their potential as pharmacological targets.
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Affiliation(s)
- Felipe Muñoz-Córdova
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile
| | - Carolina Hernández-Fuentes
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile
| | - Camila Lopez-Crisosto
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile.,Division of Cardiovascular Diseases, Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), Pontifical Catholic University of Chile, Santiago, Chile
| | - Mayarling F Troncoso
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile.,Department of Medical Technology, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Ximena Calle
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile
| | - Alejandra Guerrero-Moncayo
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile
| | - Luigi Gabrielli
- Division of Cardiovascular Diseases, Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), Pontifical Catholic University of Chile, Santiago, Chile
| | - Mario Chiong
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile
| | - Pablo F Castro
- Division of Cardiovascular Diseases, Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), Pontifical Catholic University of Chile, Santiago, Chile.,Corporación Centro de Estudios Científicos de las Enfermedades Crónicas (CECEC), University of Chile, Santiago, Chile
| | - Sergio Lavandero
- Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Advanced Center for Chronic Diseases (ACCDiS), University of Chile, Santiago, Chile.,Corporación Centro de Estudios Científicos de las Enfermedades Crónicas (CECEC), University of Chile, Santiago, Chile.,Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, TX, United States
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9
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Sapian S, Taib IS, Latip J, Katas H, Chin KY, Mohd Nor NA, Jubaidi FF, Budin SB. Therapeutic Approach of Flavonoid in Ameliorating Diabetic Cardiomyopathy by Targeting Mitochondrial-Induced Oxidative Stress. Int J Mol Sci 2021; 22:11616. [PMID: 34769045 PMCID: PMC8583796 DOI: 10.3390/ijms222111616] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 12/26/2022] Open
Abstract
Diabetes cardiomyopathy is one of the key factors of mortality among diabetic patients around the globe. One of the prior contributors to the progression of diabetic cardiomyopathy is cardiac mitochondrial dysfunction. The cardiac mitochondrial dysfunction can induce oxidative stress in cardiomyocytes and was found to be the cause of majority of the heart morphological and dynamical changes in diabetic cardiomyopathy. To slow down the occurrence of diabetic cardiomyopathy, it is crucial to discover therapeutic agents that target mitochondrial-induced oxidative stress. Flavonoid is a plentiful phytochemical in plants that shows a wide range of biological actions against human diseases. Flavonoids have been extensively documented for their ability to protect the heart from diabetic cardiomyopathy. Flavonoids' ability to alleviate diabetic cardiomyopathy is primarily attributed to their antioxidant properties. In this review, we present the mechanisms involved in flavonoid therapies in ameliorating mitochondrial-induced oxidative stress in diabetic cardiomyopathy.
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Affiliation(s)
- Syaifuzah Sapian
- Centre for Diagnostic, Therapeutic and Investigative Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (S.S.); (I.S.T.); (N.A.M.N.); (F.F.J.)
| | - Izatus Shima Taib
- Centre for Diagnostic, Therapeutic and Investigative Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (S.S.); (I.S.T.); (N.A.M.N.); (F.F.J.)
| | - Jalifah Latip
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 46300, Malaysia;
| | - Haliza Katas
- Centre for Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia;
| | - Kok-Yong Chin
- Department of Pharmacology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur 56000, Malaysia;
| | - Nor Anizah Mohd Nor
- Centre for Diagnostic, Therapeutic and Investigative Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (S.S.); (I.S.T.); (N.A.M.N.); (F.F.J.)
| | - Fatin Farhana Jubaidi
- Centre for Diagnostic, Therapeutic and Investigative Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (S.S.); (I.S.T.); (N.A.M.N.); (F.F.J.)
| | - Siti Balkis Budin
- Centre for Diagnostic, Therapeutic and Investigative Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (S.S.); (I.S.T.); (N.A.M.N.); (F.F.J.)
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10
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Saadane A, Du Y, Thoreson WB, Miyagi M, Lessieur EM, Kiser J, Wen X, Berkowitz BA, Kern TS. Photoreceptor Cell Calcium Dysregulation and Calpain Activation Promote Pathogenic Photoreceptor Oxidative Stress and Inflammation in Prodromal Diabetic Retinopathy. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:1805-1821. [PMID: 34214506 PMCID: PMC8579242 DOI: 10.1016/j.ajpath.2021.06.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 05/20/2021] [Accepted: 06/15/2021] [Indexed: 12/13/2022]
Abstract
This study tested the hypothesis that diabetes promotes a greater than normal cytosolic calcium level in rod cells that activates a Ca2+-sensitive protease, calpain, resulting in oxidative stress and inflammation, two pathogenic factors of early diabetic retinopathy. Nondiabetic and 2-month diabetic C57Bl/6J and calpain1 knockout (Capn1-/-) mice were studied; subgroups were treated with a calpain inhibitor (CI). Ca2+ content was measured in photoreceptors using Fura-2. Retinal calpain expression was studied by quantitative RT-PCR and immunohistochemistry. Superoxide and expression of inflammatory proteins were measured using published methods. Proteomic analysis was conducted on photoreceptors isolated from untreated diabetic mice or treated daily with CI for 2 months. Cytosolic Ca2+ content was increased twofold in photoreceptors of diabetic mice as compared with nondiabetic mice. Capn1 expression increased fivefold in photoreceptor outer segments of diabetic mice. Pharmacologic inhibition or genetic deletion of Capn1 significantly suppressed diabetes-induced oxidative stress and expression of proinflammatory proteins in retina. Proteomics identified a protein (WW domain-containing oxidoreductase [WWOX]) whose expression was significantly increased in photoreceptors from mice diabetic for 2 months and was inhibited with CI. Knockdown of Wwox using specific siRNA in vitro inhibited increase in superoxide caused by the high glucose. These results suggest that reducing Ca2+ accumulation, suppressing calpain activation, and/or reducing Wwox up-regulation are novel targets for treating early diabetic retinopathy.
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Affiliation(s)
- Aicha Saadane
- Department of Ophthalmology, University of California, Irvine, Irvine, California.
| | - Yunpeng Du
- Department of Ophthalmology, University of California, Irvine, Irvine, California
| | - Wallace B Thoreson
- Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, Nebraska; Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska
| | - Masaru Miyagi
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio
| | - Emma M Lessieur
- Department of Ophthalmology, University of California, Irvine, Irvine, California
| | - Jianying Kiser
- Department of Ophthalmology, University of California, Irvine, Irvine, California
| | - Xiangyi Wen
- Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, Nebraska
| | - Bruce A Berkowitz
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, Michigan
| | - Timothy S Kern
- Department of Ophthalmology, University of California, Irvine, Irvine, California; Veterans Administration Medical Center Research Service, Long Beach, California
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11
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Cao Y, Wang Q, Liu C, Wang W, Lai S, Zou H, Tao E, Wang F, Wan L. Capn4 aggravates angiotensin II-induced cardiac hypertrophy by activating the IGF-AKT signaling pathway. J Biochem 2021; 171:53-61. [PMID: 34580724 DOI: 10.1093/jb/mvab100] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 09/22/2021] [Indexed: 11/12/2022] Open
Abstract
Capn4 belongs to a family of calpains that participate in a wide variety of biological functions, but little is known about the role of Capn4 in cardiac disease. Here, we show that the expression of Capn4 was significantly increased in Angiotensin II (Ang II)-treated cardiomyocytes and Ang II-induced cardiac hypertrophic mouse hearts. Importantly, in agreement with the Capn4 expression patterns, the maximal calpain activity measured in heart homogenates was elevated in Ang II-treated mice, and oral coadministration of SNJ-1945 (calpain inhibitor) attenuated the total calpain activity measured in vitro. Functional assays indicated that overexpression of Capn4 obviously aggravated Ang II-induced cardiac hypertrophy, whereas Capn4 knockdown resulted in the opposite phenotypes. Further investigation demonstrated that Capn4 maintained the activation of the insulin-like growth factor (IGF)-AKT signaling pathway in cardiomyocytes by increasing c-Jun expression. Mechanistic investigations revealed that Capn4 directly bound and stabilized c-Jun, and knockdown of Capn4 increased the ubiquitination level of c-Jun in cardiomyocytes. Additionally, our results demonstrated that the antihypertrophic effect of Capn4 silencing was partially dependent on the inhibition of c-Jun. Overall, these data suggested that Capn4 contributes to cardiac hypertrophy by enhancing the c-Jun-mediated IGF-AKT signaling pathway and could be a potential therapeutic target for hypertrophic cardiomyopathy.
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Affiliation(s)
- Yuanping Cao
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Qun Wang
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Caiyun Liu
- Operating Room, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Wenjun Wang
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Songqing Lai
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Huaxi Zou
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Ende Tao
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Fudong Wang
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Li Wan
- Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
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12
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Wang P, Luo C, Zhu D, Song Y, Cao L, Luan H, Gao L, Zheng S, Li H, Tian G. Pericardial Adipose Tissue-Derived Leptin Promotes Myocardial Apoptosis in High-Fat Diet-Induced Obese Rats Through Janus Kinase 2/Reactive Oxygen Species/Na+/K+-ATPase Signaling Pathway. J Am Heart Assoc 2021; 10:e021369. [PMID: 34482701 PMCID: PMC8649551 DOI: 10.1161/jaha.121.021369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background Pathophysiologic mechanisms underlying cardiac structural and functional changes in obesity are complex and linked to adipocytokines released from pericardial adipose tissue (PAT) and cardiomyocyte apoptosis. Although leptin is involved in various pathological conditions, its role in paracrine action of pericardial adipose tissue on myocardial apoptosis remains unknown. This study was designed to investigate the role of PAT‐derived leptin on myocardial apoptosis in high‐fat diet–induced obese rats. Methods and Results Hearts were isolated from lean or high‐fat diet–induced obese Wistar rats for myocardial remodeling studies. Obese rats had abnormal myocardial structure, diastolic dysfunction, greatly elevated cardiac apoptosis, enhanced cardiac fibrosis, and increased oxidative stress level. ELISA detected significantly higher than circulating leptin level in PAT of obese, but not lean, rats. Western blot and immunohistochemical analyses demonstrated increased leptin receptor density in obese hearts. H9c2 cardiomyoblasts, after being exposed to PAT‐conditioned medium of obese rats, exhibited pronounced reactive oxygen species–mediated apoptosis, which was partially reversed by leptin antagonist. Moreover, leptin derived from PAT of obese rats inhibited Na+/K+‐ATPase activity of H9c2 cells through stimulating reactive oxygen species, thereby activating calcium‐dependent apoptosis. Pretreatment with specific inhibitors revealed that Janus kinase 2/signal transducer and activator of transcription 3 and phosphoinositide 3‐kinase/protein kinase B signaling pathways were involved in leptin‐induced myocardial apoptosis. Conclusions PAT‐derived leptin induces myocardial apoptosis in high‐fat diet–induced obese rats via activating Janus kinase 2/signal transducer and activator of transcription 3/reactive oxygen species signaling pathway and inhibiting its downstream Na+/K+‐ATPase activity.
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Affiliation(s)
- Ping Wang
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Chaodi Luo
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Danjun Zhu
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Yan Song
- Department of Ultrasound First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Lifei Cao
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Hui Luan
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Lan Gao
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Shuping Zheng
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Hao Li
- Intensive Care Unit First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Gang Tian
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
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13
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Negri S, Faris P, Moccia F. Reactive Oxygen Species and Endothelial Ca 2+ Signaling: Brothers in Arms or Partners in Crime? Int J Mol Sci 2021; 22:ijms22189821. [PMID: 34575985 PMCID: PMC8465413 DOI: 10.3390/ijms22189821] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/08/2021] [Accepted: 09/08/2021] [Indexed: 12/20/2022] Open
Abstract
An increase in intracellular Ca2+ concentration ([Ca2+]i) controls virtually all endothelial cell functions and is, therefore, crucial to maintain cardiovascular homeostasis. An aberrant elevation in endothelial can indeed lead to severe cardiovascular disorders. Likewise, moderate amounts of reactive oxygen species (ROS) induce intracellular Ca2+ signals to regulate vascular functions, while excessive ROS production may exploit dysregulated Ca2+ dynamics to induce endothelial injury. Herein, we survey how ROS induce endothelial Ca2+ signals to regulate vascular functions and, vice versa, how aberrant ROS generation may exploit the Ca2+ handling machinery to promote endothelial dysfunction. ROS elicit endothelial Ca2+ signals by regulating inositol-1,4,5-trisphosphate receptors, sarco-endoplasmic reticulum Ca2+-ATPase 2B, two-pore channels, store-operated Ca2+ entry (SOCE), and multiple isoforms of transient receptor potential (TRP) channels. ROS-induced endothelial Ca2+ signals regulate endothelial permeability, angiogenesis, and generation of vasorelaxing mediators and can be exploited to induce therapeutic angiogenesis, rescue neurovascular coupling, and induce cancer regression. However, an increase in endothelial [Ca2+]i induced by aberrant ROS formation may result in endothelial dysfunction, inflammatory diseases, metabolic disorders, and pulmonary artery hypertension. This information could pave the way to design alternative treatments to interfere with the life-threatening interconnection between endothelial ROS and Ca2+ signaling under multiple pathological conditions.
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14
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Calpain-Mediated Mitochondrial Damage: An Emerging Mechanism Contributing to Cardiac Disease. Cells 2021; 10:cells10082024. [PMID: 34440793 PMCID: PMC8392834 DOI: 10.3390/cells10082024] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/19/2021] [Accepted: 08/06/2021] [Indexed: 12/13/2022] Open
Abstract
Calpains belong to the family of calcium-dependent cysteine proteases expressed ubiquitously in mammals and many other organisms. Activation of calpain is observed in diseased hearts and is implicated in cardiac cell death, hypertrophy, fibrosis, and inflammation. However, the underlying mechanisms remain incompletely understood. Recent studies have revealed that calpains target and impair mitochondria in cardiac disease. The objective of this review is to discuss the role of calpains in mediating mitochondrial damage and the underlying mechanisms, and to evaluate whether targeted inhibition of mitochondrial calpain is a potential strategy in treating cardiac disease. We expect to describe the wealth of new evidence surrounding calpain-mediated mitochondrial damage to facilitate future mechanistic studies and therapy development for cardiac disease.
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15
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Byrne NJ, Rajasekaran NS, Abel ED, Bugger H. Therapeutic potential of targeting oxidative stress in diabetic cardiomyopathy. Free Radic Biol Med 2021; 169:317-342. [PMID: 33910093 PMCID: PMC8285002 DOI: 10.1016/j.freeradbiomed.2021.03.046] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/24/2021] [Accepted: 03/25/2021] [Indexed: 02/07/2023]
Abstract
Even in the absence of coronary artery disease and hypertension, diabetes mellitus (DM) may increase the risk for heart failure development. This risk evolves from functional and structural alterations induced by diabetes in the heart, a cardiac entity termed diabetic cardiomyopathy (DbCM). Oxidative stress, defined as the imbalance of reactive oxygen species (ROS) has been increasingly proposed to contribute to the development of DbCM. There are several sources of ROS production including the mitochondria, NAD(P)H oxidase, xanthine oxidase, and uncoupled nitric oxide synthase. Overproduction of ROS in DbCM is thought to be counterbalanced by elevated antioxidant defense enzymes such as catalase and superoxide dismutase. Excess ROS in the cardiomyocyte results in further ROS production, mitochondrial DNA damage, lipid peroxidation, post-translational modifications of proteins and ultimately cell death and cardiac dysfunction. Furthermore, ROS modulates transcription factors responsible for expression of antioxidant enzymes. Lastly, evidence exists that several pharmacological agents may convey cardiovascular benefit by antioxidant mechanisms. As such, increasing our understanding of the pathways that lead to increased ROS production and impaired antioxidant defense may enable the development of therapeutic strategies against the progression of DbCM. Herein, we review the current knowledge about causes and consequences of ROS in DbCM, as well as the therapeutic potential and strategies of targeting oxidative stress in the diabetic heart.
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Affiliation(s)
- Nikole J Byrne
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Namakkal S Rajasekaran
- Cardiac Aging & Redox Signaling Laboratory, Molecular and Cellular Pathology, Department of Pathology, Birmingham, AL, USA; Division of Cardiovascular Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA; Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - E Dale Abel
- Fraternal Order of Eagles Diabetes Research Center, Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, USA
| | - Heiko Bugger
- Division of Cardiology, Medical University of Graz, Graz, Austria.
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16
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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] [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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17
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Battault S, Renguet E, Van Steenbergen A, Horman S, Beauloye C, Bertrand L. Myocardial glucotoxicity: Mechanisms and potential therapeutic targets. Arch Cardiovasc Dis 2020; 113:736-748. [PMID: 33189592 DOI: 10.1016/j.acvd.2020.06.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 12/19/2022]
Abstract
Besides coronary artery disease, which remains the main cause of heart failure in patients with diabetes, factors independent of coronary artery disease are involved in the development of heart failure in the onset of what is called diabetic cardiomyopathy. Among them, hyperglycaemia - a hallmark of type 2 diabetes - has both acute and chronic deleterious effects on myocardial function, and clearly participates in the establishment of diabetic cardiomyopathy. In the present review, we summarize the cellular and tissular events that occur in a heart exposed to hyperglycaemia, and depict the complex molecular mechanisms proposed to be involved in glucotoxicity. Finally, from a more translational perspective, different therapeutic strategies targeting hyperglycaemia-mediated molecular mechanisms will be detailed.
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Affiliation(s)
- Sylvain Battault
- Pole of cardiovascular research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Edith Renguet
- Pole of cardiovascular research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Anne Van Steenbergen
- Pole of cardiovascular research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Sandrine Horman
- Pole of cardiovascular research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Christophe Beauloye
- Pole of cardiovascular research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, B-1200 Brussels, Belgium; Division of cardiology, Cliniques Universitaires Saint-Luc, B-1200 Brussels, Belgium.
| | - Luc Bertrand
- Pole of cardiovascular research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, B-1200 Brussels, Belgium; WELBIO, B-1300 Wavre, Belgium.
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18
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Nguyen LD, Fischer TT, Abreu D, Arroyo A, Urano F, Ehrlich BE. Calpain inhibitor and ibudilast rescue β cell functions in a cellular model of Wolfram syndrome. Proc Natl Acad Sci U S A 2020; 117:17389-17398. [PMID: 32632005 PMCID: PMC7382278 DOI: 10.1073/pnas.2007136117] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Wolfram syndrome is a rare multisystem disease characterized by childhood-onset diabetes mellitus and progressive neurodegeneration. Most cases are attributed to pathogenic variants in a single gene, Wolfram syndrome 1 (WFS1). There currently is no disease-modifying treatment for Wolfram syndrome, as the molecular consequences of the loss of WFS1 remain elusive. Because diabetes mellitus is the first diagnosed symptom of Wolfram syndrome, we aimed to further examine the functions of WFS1 in pancreatic β cells in the context of hyperglycemia. Knockout (KO) of WFS1 in rat insulinoma (INS1) cells impaired calcium homeostasis and protein kinase B/Akt signaling and, subsequently, decreased cell viability and glucose-stimulated insulin secretion. Targeting calcium homeostasis with reexpression of WFS1, overexpression of WFS1's interacting partner neuronal calcium sensor-1 (NCS1), or treatment with calpain inhibitor and ibudilast reversed deficits observed in WFS1-KO cells. Collectively, our findings provide insight into the disease mechanism of Wolfram syndrome and highlight new targets and drug candidates to facilitate the development of a treatment for this disorder and similar diseases.
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Affiliation(s)
- Lien D Nguyen
- Department of Pharmacology, Yale University, New Haven, CT 06520
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT 06520
| | - Tom T Fischer
- Department of Pharmacology, Yale University, New Haven, CT 06520
- Institute of Pharmacology, University of Heidelberg, 69117 Heidelberg, Germany
| | - Damien Abreu
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO 63110
| | - Alfredo Arroyo
- Department of Pharmacology, Yale University, New Haven, CT 06520
| | - Fumihiko Urano
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University, New Haven, CT 06520;
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT 06520
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19
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Zhang Y, Li Y, Huang X, Zhang F, Tang L, Xu S, Liu Y, Tong N, Min W. Systemic Delivery of siRNA Specific for Silencing TLR4 Gene Expression Reduces Diabetic Cardiomyopathy in a Mouse Model of Streptozotocin-Induced Type 1 Diabetes. Diabetes Ther 2020; 11:1161-1173. [PMID: 32285313 PMCID: PMC7193037 DOI: 10.1007/s13300-020-00802-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Diabetic cardiomyopathy is a cardiac dysfunction in patients with diabetes which may lead to overt heart failure and death. Toll-like receptor (TLR) signaling triggers diabetic cardiomyopathy through various mechanisms, one of which is the upregulation of TLR4 expression. The aim of this study was to delineate the role of TLR4 in diabetic cardiomyopathy. METHODS C57BL/6 mice were injected with streptozotocin to induce diabetes. The experimental and control groups were treated with 5 μg of TLR4 small interfering RNA (siRNA) or scrambled siRNA. Cardiac histopathology was evaluated by hematoxylin and eosin, Sirius red, and immunofluorescence staining after treatment with TLR4 siRNA. The myocardial fibrosis and inflammatory factors were detected by quantitative real-time polymerase chain reaction after treatment with TLR4 siRNA. The myocardial function was evaluated by echocardiography after treatment with TLR4 siRNA. RESULTS Compared with non-diabetic mouse hearts, hypertrophy, fibrosis, inflammation of cardiomyocytes, and myocardial dysfunction were significantly increased in diabetic mice (p < 0.05). Knockdown of TLR4 decreased hypertrophy, fibrosis, inflammation of cardiomyocytes, and myocardial dysfunction (p < 0.05). Cardiomyocytic cross-sectional areas in hearts of TLR4 siRNA-treated diabetic mice were similar to those of the sham-treated mice (p > 0.05). The induction of expression of cardiac fetal genes, beta-myosin heavy chain (β-MHC) and atrial natriuretic peptide (ANP), which are two markers of cardiac hypertrophy, was significantly reduced in TLR4 siRNA-treated hearts compared with controls (p < 0.05). Moreover, siRNA-mediated silencing of TLR4 reduced diabetes-induced collagen deposition (p < 0.05). Paralleled with changes in collagen deposition and the expression of collagen I and collagen III, knockdown of TLR4 also reduced the expression of transforming growth factor-β1 (TGFβ1) mRNA (p < 0.05). The increased expression of intercellular cell adhesion molecule 1 (ICAM-1) and vascular cell adhesion molecule 1 (VCAM-1) was significantly attenuated by TLR4 siRNA treatment in the hearts of diabetic mice (p < 0.05). Furthermore, both fractional shortening (FS) and ejection fraction (EF) values were preserved in TLR4 siRNA-treated diabetic mice compared with control siRNA-treated mice (31.80% ± 2.82% vs. 28.50% ± 5.83% for FS, p < 0.05) (57.95% ± 6.48% vs. 45.34% ± 4.25% for EF, p < 0.05). CONCLUSION Our study used siRNA to specifically silence TLR4 gene expression in the diabetic mouse heart in vivo and to investigate the role that TLR4 plays in diabetic cardiomyopathy. It is likely that silencing of the TLR4 gene through siRNA could prevent the development of diabetic cardiomyopathy.
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Affiliation(s)
- Yuwei Zhang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Yang Li
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Xuefang Huang
- Endocrine and Metabolic Center, People's Hospital of Karamay, Xinjiang, China
| | - Fang Zhang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Lizhi Tang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Shishi Xu
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Yuqi Liu
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Nanwei Tong
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China.
| | - Weiping Min
- Departments of Surgery, Pathology, Medicine, Oncology, University of Western Ontario, London, ON, Canada.
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Taurine prevents cardiomyocyte apoptosis by inhibiting the calpain-1/cytochrome c pathway during RVH in broilers. Amino Acids 2020; 52:453-463. [PMID: 32108265 DOI: 10.1007/s00726-020-02824-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 01/30/2020] [Indexed: 12/26/2022]
Abstract
The calpain-1-activated apoptotic pathway plays a key role in right ventricular hypertrophy (RVH). Taurine has been shown to attenuate apoptosis by inhibiting calpain activity. This experiment aimed to determine whether taurine could prevent RVH by inhibiting the calpain-1/cytochrome c apoptotic pathway. The broilers were given 1% taurine dissolved in drinking water and were raised at 10 °C ~ 12 °C from day 21 to day 42. At 21 d, 28 d, 35 d and 42 d, the right ventricular (RV) tissues were collected. Increased RVH index, angiotensin II, norepinephrine and atrial natriuretic peptide mRNA expression were reduced by taurine in the broiler RVs. Taurine obviously inhibited cardiomyocyte apoptosis via maintaining the mitochondrial membrane potential and decreased the activation of caspase-9 and caspase-3 in the broiler RVs. The antioxidant assay demonstrated that taurine enhanced the activities of superoxide dismutase, total antioxidant capacity and glutathione peroxidase and the glutathione/glutathione disulfide ratio. Western blot results revealed that taurine also downregulated the expression of calpain-1 and cytosolic cytochrome c while upregulating the expression of Bcl-2/Bax and mitochondrial cytochrome c in broiler cardiomyocytes during RVH. In summary, we found that taurine could enhance cardiomyocyte antioxidant ability and further prevented cardiomyocyte apoptosis by inhibiting the calpain-1/cytochrome c pathway during RVH in broilers.
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Kalra J, Mangali SB, Dasari D, Bhat A, Goyal S, Dhar I, Sriram D, Dhar A. SGLT1 inhibition boon or bane for diabetes-associated cardiomyopathy. Fundam Clin Pharmacol 2019; 34:173-188. [PMID: 31698522 DOI: 10.1111/fcp.12516] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 09/18/2019] [Accepted: 10/14/2019] [Indexed: 12/29/2022]
Abstract
Chronic hyperglycaemia is a peculiar feature of diabetes mellitus (DM). Sequential metabolic abnormalities accompanying glucotoxicity are some of its implications. Glucotoxicity most likely corresponds to the vascular intricacy and metabolic alterations, such as increased oxidation of free fatty acids and reduced glucose oxidation. More than half of those with diabetes also develop cardiac abnormalities due to unknown causes, posing a major threat to the currently available marketed preparations which are being used for treating these cardiac complications. Even though impairment in cardiac functioning is the principal cause of death in individuals with type 2 diabetes (T2D), reducing plasma glucose levels has little effect on cardiovascular disease (CVD) risk. In vitro and in vivo studies have demonstrated that inhibitors of sodium glucose transporter (SGLT) represent a putative therapeutic intervention for these pathological conditions. Several clinical trials have reported the efficacy of SGLT inhibitors as a novel and potent antidiabetic agent which along with its antihyperglycaemic activity possesses the potential of effectively treating its associated cardiac abnormalities. Thus, hereby, the present review highlights the role of SGLT inhibitors as a successful drug candidate for correcting the shifts in deregulation of cardiac energy substrate metabolism together with its role in treating diabetes-related cardiac perturbations.
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Affiliation(s)
- Jaspreet Kalra
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad,, Andhra Pradesh, 500078, India
| | - Suresh Babu Mangali
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad,, Andhra Pradesh, 500078, India
| | - Deepika Dasari
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad,, Andhra Pradesh, 500078, India
| | - Audesh Bhat
- Centre for Molecular Biology, Central University of Jammu, Jammu, 181143, India
| | - Srashti Goyal
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad,, Andhra Pradesh, 500078, India
| | - Indu Dhar
- Department of Clinical Science, University of Bergen, Bergen, 5009, Norway
| | - Dharamrajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad,, Andhra Pradesh, 500078, India
| | - Arti Dhar
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad,, Andhra Pradesh, 500078, India
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Taurine Prevented Hypoxia Induced Chicken Cardiomyocyte Apoptosis Through the Inhibition of Mitochondrial Pathway Activated by Calpain-1. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019. [PMID: 31468422 DOI: 10.1007/978-981-13-8023-5_42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register]
Abstract
Objective To determine whether taurine has protective effects on chicken myocardial apoptosis induced by hypoxic condition through inhibiting calpain-1 derived mitochondrial apoptotic pathway. Methods Chicken primary embryonic myocardial cells were isolated and cultured at 37 °C under a 5% CO2 atmosphere. Firstly the optimum concentration of taurine or PD150606 was chosen by detecting the cell viability. Chicken cardiomyocytes were cultured in 95% N2-5% CO2 atmosphere for 12 h to produce hypoxic conditions. Before hypoxic treatment, 10 mM taurine and 10 uM PD150606 (a specific calpains inhibitor) were added separately or together. The cell apoptosis was detected by acridine orange/ethidium bromide (AO/EB) double staining. Western blotting was used to determine the protein expressions of calpain-1, cytochrome c, Bcl-2, procaspase-9 and procaspase-3 in the cardiomyocytes. Results Taurine administration effectively attenuated the myocardial apoptosis under hypoxic condition, reduced the calpain-1 protein level. In addition, pre-treated taurine could up-regulate the protein expressions of Bcl-2 and procaspase-3 in hypoxic myocardial cells, down-regulate protein expression levels of cytochrome c and procaspase-9. Moreover, taurine exhibited same inhibition effect as PD150606 on the cell apoptosis and proteins express under hypoxic condition. Conclusions Taurine could attenuate the chicken cardiomyocyte apoptosis impaired by hypoxia through inhibiting calpian-1-derived mitochondrial apoptotic pathway in vitro.
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Cho SO, Lim JW, Kim H. Oxidative stress induces apoptosis via calpain- and caspase-3-mediated cleavage of ATM in pancreatic acinar cells. Free Radic Res 2019; 54:799-809. [PMID: 31401888 DOI: 10.1080/10715762.2019.1655145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oxidative stress-induced DNA cleavage and apoptosis in pancreatic acinar cells has been implicated in the pathogenesis of acute pancreatitis. Thus, an efficient DNA repair process is key to prevention of apoptotic pancreatic acinar cell death. Ataxia telangiectasia mutated (ATM), a sensor of DNA breaks, functions by recruiting DNA repair proteins to initiate the DNA repair process. In the present study, we investigated whether H2O2 produced by the action of glucose oxidase on α-D-glucose (G/GO) induces apoptosis in pancreatic acinar AR42J cells through an alteration of the level of ATM. As a result, G/GO induced apoptosis by promoting a loss of cell viability, increase in Bax, decrease in Bcl-2, cleavage of poly (ADP-ribose) polymerase (PARP) and fragmentation of DNA. In addition, ATM cleavage along with elevated levels of calpain and caspase-3 activity was induced by G/GO. By using ATM siRNA, we demonstrated that reduction in ATM levels enhanced G/GO-induced apoptosis. Moreover, inhibition of calpain activity by calpeptin or calpastatin, or by inhibition of caspase-3 with z-DEVD, suppressed G/GO-induced apoptosis and ATM cleavage. Collectively, these findings suggest that proteolysis of ATM is the underlying mechanism of apoptosis of pancreatic acinar cells caused by exposure to oxidative stress.
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Affiliation(s)
- Soon Ok Cho
- Department of Pharmacology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Joo Weon Lim
- Department of Food and Nutrition, BK 21 Plus Project, College of Human Ecology, Yonsei University, Seoul, Republic of Korea
| | - Hyeyoung Kim
- Department of Food and Nutrition, BK 21 Plus Project, College of Human Ecology, Yonsei University, Seoul, Republic of Korea
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Li H, Chen LP, Wang T, Wang SG, Liu JH. Calpain inhibition improves erectile function in diabetic mice via upregulating endothelial nitric oxide synthase expression and reducing apoptosis. Asian J Androl 2019; 20:342-348. [PMID: 29319007 PMCID: PMC6038160 DOI: 10.4103/aja.aja_63_17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Calpain activation contributes to hyperglycemia-induced endothelial dysfunction and apoptosis. This study was designed to investigate the role of calpain inhibition in improving diabetic erectile dysfunction (ED) in mice. Thirty-eight-week-old male C57BL/6J mice were divided into three groups: (1) nondiabetic control group, (2) diabetic mice + vehicle group, and (3) diabetic mice + MDL28170 (an inhibitor of calpain) group. Type 1 diabetes was induced by intraperitoneal injection of streptozotocin at 60 mg kg−1 body weight for 5 consecutive days. Thirteen weeks later, diabetic mice were treated with MDL28170 or vehicle for 4 weeks. The erectile function was assessed by electrical stimulation of the cavernous nerve. Penile tissues were collected for measurement of calpain activity and the endothelial nitric oxide synthase (eNOS)-nitric oxide (NO)-cyclic guanosine monophosphate (cGMP) pathway. Terminal deoxynucleotidyl transferase 2'-deoxyuridine 5'-triphosphate nick end labeling (TUNEL) staining was used to evaluate apoptosis. Caspase-3 expression and activity were also measured to determine apoptosis. Our results showed that erectile function was enhanced by MDL28170 treatment in diabetic mice compared with the vehicle diabetic group. No differences in calpain-1 and calpain-2 expressions were observed among the three groups. However, calpain activity was increased in the diabetic group and reduced by MDL28170. The eNOS-NO-cGMP pathway was upregulated by MDL28170 treatment in diabetic mice. Additionally, MDL28170 could attenuate apoptosis and increase the endothelium and smooth muscle levels in corpus cavernosum. Inhibition of calpain could improve erectile function, probably by upregulating the eNOS-NO-cGMP pathway and reducing apoptosis.
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Affiliation(s)
- Hao Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li-Ping Chen
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shao-Gang Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ji-Hong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Meng Y, Sun T, Wu C, Dong C, Xiong S. Calpain regulates CVB3 induced viral myocarditis by promoting autophagic flux upon infection. Microbes Infect 2019; 22:46-54. [PMID: 31319178 DOI: 10.1016/j.micinf.2019.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/22/2019] [Accepted: 07/10/2019] [Indexed: 12/18/2022]
Abstract
Calpains are calcium-activated neutral cysteine proteases. The dysregulation of calpain activity has been found to be related to cardiovascular diseases, for which calpain inhibition is used as a treatment. Viral myocarditis (VMC) is primarily caused by Coxsackievirus group B3 virus infection (CVB3). CVB3 virus infection induces autophagy and hijacks this process to facilitate its replication. In this study, we found that calpain was significantly activated in hearts affected by VMC. However, pharmacologically inhibiting calpain aggravated VMC symptoms in mice due to myocardial inflammation and cardiac dysfunction. The inhibition of calpain activity in vitro led to the accumulation of LC3-II and increased levels of p62/SQSTM1 protein expression, suggesting that autophagic flux was impaired by calpain inhibition. These effects of calpain inhibition were also observed in capn4-specific myocardial knockout mice in vivo. Furthermore, our results provided evidence that calpain inhibition in VMC, unlike other cardiovascular diseases, exacerbated the disease symptom by impairing CVB3-induced autophagic flux, which may subsequently reduce virus autolysosome degradation. Our findings indicated that calpain inhibition may not be a good treatment for VMC disease in a clinical setting.
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Affiliation(s)
- Yawen Meng
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Tianle Sun
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Chuanjian Wu
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Chunsheng Dong
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
| | - Sidong Xiong
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
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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: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [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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TGR5 activation ameliorates hyperglycemia-induced cardiac hypertrophy in H9c2 cells. Sci Rep 2019; 9:3633. [PMID: 30842472 PMCID: PMC6403401 DOI: 10.1038/s41598-019-40002-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/06/2019] [Indexed: 12/20/2022] Open
Abstract
Left ventricular hypertrophy is an independent risk factor in diabetic patients. TGR5 is shown to express in hearts, but its functional role in diabetes-induced cardiac hypertrophy remained unclear. The current study investigated the role of TGR5 on high glucose-induced hypertrophy of H9C2 cells. After incubation with a high level of glucose, H9C2 cells showed hypertrophic responses. Activation of TGR5 by lithocholic acid (LCA) ameliorated cell hypertrophy and enhanced SERCA2a and phosphorylated phospholamban (PLN) expression in H9C2 cells. Triamterene inhibited these effects at an effective dose to block TGR5. However, LCA failed to modify the free radical elevation induced by high-glucose in the H9c2 cells. Moreover, PKA inhibitors, but not an Epac blocker, markedly improved hyperglycemia-induced hypertrophy and attenuated the increased SERCA2a expression by LCA; it also attenuated the phosphorylated PLN and SERCA2a protein expression levels in high glucose-treated H9C2 cells. In conclusion, TGR5 activation stimulated protein kinase A (PKA) to enhance PLN phosphorylation, which activated SERCA2a to remove Ca2+ from cytosol to sarcoplasmic reticulum in addition to the reduction of calcineurin/NFAT pathway signaling to ameliorate the hyperglycemia-induced cardiac hypertrophy shown in cardiomyocytes. TGR5 may service as a new target in the control of diabetic cardiomyopathy.
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Ong SB, Lee WH, Shao NY, Ismail NI, Katwadi K, Lim MM, Kwek XY, Michel NA, Li J, Newson J, Tahmasebi S, Rehman J, Kodo K, Jang HR, Ong SG. Calpain Inhibition Restores Autophagy and Prevents Mitochondrial Fragmentation in a Human iPSC Model of Diabetic Endotheliopathy. Stem Cell Reports 2019; 12:597-610. [PMID: 30799273 PMCID: PMC6411483 DOI: 10.1016/j.stemcr.2019.01.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 02/09/2023] Open
Abstract
The relationship between diabetes and endothelial dysfunction remains unclear, particularly the association with pathological activation of calpain, an intracellular cysteine protease. Here, we used human induced pluripotent stem cells-derived endothelial cells (iPSC-ECs) to investigate the effects of diabetes on vascular health. Our results indicate that iPSC-ECs exposed to hyperglycemia had impaired autophagy, increased mitochondria fragmentation, and was associated with increased calpain activity. In addition, hyperglycemic iPSC-ECs had increased susceptibility to cell death when subjected to a secondary insult-simulated ischemia-reperfusion injury (sIRI). Importantly, calpain inhibition restored autophagy and reduced mitochondrial fragmentation, concurrent with maintenance of ATP production, normalized reactive oxygen species levels and reduced susceptibility to sIRI. Using a human iPSC model of diabetic endotheliopathy, we demonstrated that restoration of autophagy and prevention of mitochondrial fragmentation via calpain inhibition improves vascular integrity. Our human iPSC-EC model thus represents a valuable platform to explore biological mechanisms and new treatments for diabetes-induced endothelial dysfunction.
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Affiliation(s)
- Sang-Bing Ong
- Signature Research Program in Cardiovascular & Metabolic Disorders, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Won Hee Lee
- Department of Basic Medical Sciences, University of Arizona, Phoenix, AZ 85004, USA
| | - Ning-Yi Shao
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nur Izzah Ismail
- Signature Research Program in Cardiovascular & Metabolic Disorders, Duke-NUS Medical School, Singapore 169857, Singapore; Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Khairunnisa Katwadi
- Signature Research Program in Cardiovascular & Metabolic Disorders, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Mim-Mim Lim
- Signature Research Program in Cardiovascular & Metabolic Disorders, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Xiu-Yi Kwek
- Signature Research Program in Cardiovascular & Metabolic Disorders, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Nathaly Anto Michel
- Signature Research Program in Cardiovascular & Metabolic Disorders, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Jiajun Li
- Department of Pharmacology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Jordan Newson
- Department of Pharmacology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Soroush Tahmasebi
- Department of Pharmacology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Jalees Rehman
- Department of Pharmacology, The University of Illinois College of Medicine, Chicago, IL 60612, USA; Division of Cardiology, Department of Medicine, The University of Illinois College of Medicine, 909 S Wolcott Avenue, Chicago, IL 60612, USA
| | - Kazuki Kodo
- Department of Pediatrics, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Hye Ryoun Jang
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351 Republic of Korea.
| | - Sang-Ging Ong
- Department of Pharmacology, The University of Illinois College of Medicine, Chicago, IL 60612, USA; Division of Cardiology, Department of Medicine, The University of Illinois College of Medicine, 909 S Wolcott Avenue, Chicago, IL 60612, USA.
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Liu ZF, Ji JJ, Zheng D, Su L, Peng T. Calpain-2 protects against heat stress-induced cardiomyocyte apoptosis and heart dysfunction by blocking p38 mitogen-activated protein kinase activation. J Cell Physiol 2018; 234:10761-10770. [PMID: 30417356 DOI: 10.1002/jcp.27750] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/22/2018] [Indexed: 12/25/2022]
Abstract
Cardiovascular dysfunction is a common complication among heatstroke patients, but its underlying mechanism is unclear. This study was designed to investigate the role of calpain-2 and its downstream signal pathway in heat stress-induced cardiomyocyte apoptosis and heart dysfunction. In cultured primary mouse neonatal cardiomyocytes (MNCs), heat stress (43°C for 2 hr) induced a heat-shock response, as indicated by upregulated heat-shock protein 27 (HSP27) expression and cellular apoptosis, as indicated by increased caspase-3 activity, DNA fragmentation and decreased cell viability. Meanwhile, heat stress decreased calpain activity, which was accompanied by downregulated calpain-2 expression and increased phosphorylation of p38, extraceIIuIar signaI-reguIated protein kinase (ERK1/2) and c-Jun N-terminaI kinase (JNK). Calpain-2 overexpression abrogated heat stress-induced apoptosis and phosphorylation of p38 and JNK, but not of ERK1/2. Blocking only p38 prevented heat stress-induced apoptosis in MNCs. In cardiac-specific calpain-2 overexpressing transgenic mice, p38 phosphorylation and cardiomyocyte apoptosis were decreased in the heart tissue of heatstroke mice, as revealed by western blot and terminal deoxynucleotidyl transferase dUTP nick end labelling assays, respectively. M-mode echocardiography also demonstrated that calpain-2 overexpression significantly improved heatstroke-induced decreases in ventricular end-diastolic volume and cardiac output. In conclusion, our study suggests that heat stress reduces calpain-2 expression, which then activates p38, leading to cardiomyocyte apoptosis and heart dysfunction.
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Affiliation(s)
- Zhi-Feng Liu
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, China.,Department of Medicine, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Pathology, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Jing-Jing Ji
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, China.,Departement of Pathophysiology, Southern Medical University, Guangzhou, China
| | - Dong Zheng
- Department of Medicine, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Pathology, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Lei Su
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, China.,Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, China
| | - Tianqing Peng
- Department of Medicine, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Pathology, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
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Li S, Ma J, Li JB, Lacefield JC, Jones DL, Peng TQ, Wei M. Over-expression of calpastatin attenuates myocardial injury following myocardial infarction by inhibiting endoplasmic reticulum stress. J Thorac Dis 2018; 10:5283-5297. [PMID: 30416776 DOI: 10.21037/jtd.2018.08.133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background Ischemic heart injury activates calpains and endoplasmic reticulum (ER) stress in cardiomyocytes. This study investigated whether over-expression of calpastatin, an endogenous calpain inhibitor, protects the heart against myocardial infarction (MI) by inhibiting ER stress. Methods Mice over-expressing calpastatin (Tg-CAST) and littermate wild type (WT) mice were divided into four groups: WT-sham, Tg-CAST-sham, WT-MI, and Tg-CAST-MI, respectively. WT-sham and Tg-CAST-sham mice showed similar cardiac function at baseline. MI for 7 days impaired cardiac function in WT-MI mice, which was ameliorated in Tg-CAST-MI mice. Results Tg-CAST-MI mice exhibited significantly decreased diameter of the left ventricular cavity, scar area, and cardiac cell death compared to WT-MI mice. WT-MI mice had higher cardiac expression of C/EBP homologous protein (CHOP) and BIP, indicators of ER stress, compared to WT-sham mice, indicative of MI-induced ER stress. This increase was abolished in Tg-CAST-MI hearts. Furthermore, administration of tauroursodeoxycholic acid, an inhibitor of ER stress, reduced MI-induced expression of CHOP and BIP, scar area, and myocardial dysfunction. In an in vitro model of oxidative stress, H2O2 stimulation of H9c2 cardiomyoblasts induced calpain activation, CHOP expression, and cell death, all of which were prevented by the calpain inhibitor PD150606, as well as CHOP silencing. Conclusions Over-expression of calpastatin ameliorates MI-induced myocardial injury in mice. These protective effects of calpastatin are partially achieved through suppression of the ER stress/CHOP pathway.
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Affiliation(s)
- Shuai Li
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada.,Department of Medicine, Western University, London, Ontario, Canada.,Department of Pathology, Western University, London, Ontario, Canada
| | - Jian Ma
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Jing-Bo Li
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - James C Lacefield
- Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada.,Department of Medical Biophysics, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada
| | - Douglas L Jones
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada.,Department of Medicine, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada.,Department of Physiology & Pharmacology, Western University, London, Ontario, Canada
| | - Tian-Qing Peng
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada.,Department of Medicine, Western University, London, Ontario, Canada.,Department of Pathology, Western University, London, Ontario, Canada
| | - Meng Wei
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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Joubert M, Manrique A, Cariou B, Prieur X. Diabetes-related cardiomyopathy: The sweet story of glucose overload from epidemiology to cellular pathways. DIABETES & METABOLISM 2018; 45:238-247. [PMID: 30078623 DOI: 10.1016/j.diabet.2018.07.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/28/2018] [Accepted: 07/12/2018] [Indexed: 02/07/2023]
Abstract
Type 2 diabetes (T2D) is a major risk factor for heart failure (HF). Although the number of cases of myocardial infarction in the T2D population has been reduced by 25% over the last 10 years, the incidence of HF is continuously increasing, making it the most worrying diabetes complication. This strongly reinforces the urgent need for innovative therapeutic interventions to prevent cardiac dysfunction in T2D patients. To this end, epidemiological, imaging and animal studies have aimed to highlight the mechanisms involved in the development of diabetic cardiomyopathy. Epidemiological observations clearly show that hyperglycaemia correlates with severity of cardiac dysfunction and mortality in T2D patients. Both animal and cellular studies have demonstrated that, in the context of diabetes, the heart loses its ability to utilize glucose, therefore leading to glucose overload in cardiomyocytes that, in turn, promotes oxidative stress, accumulation of advanced glycation end-products (AGEs) and chronic activation of the hexosamine pathway. These have all been found to activate apoptosis and to alter heart contractility, calcium signalling and mitochondrial function. Although, in the past, tight glycaemic control has failed to improve cardiac function in T2D patients, recent clinical trials have reported cardiovascular benefit with hypoglycaemic antidiabetic drugs of the SGLT2-inhibitor family. This review, based on clinical evidence from mechanistic studies as well as several large clinical trials, covers 15 years of research, and strongly supports the idea that hyperglycaemia and glucose overload play a central role in the pathophysiology of diabetic cardiomyopathy.
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Affiliation(s)
- M Joubert
- Diabetes care unit, Caen university hospital, 14033 Caen cedex, France; EA4650, UNICAEN, 14000 Caen, France
| | - A Manrique
- Nuclear medicine unit, Caen university hospital, 14033 Caen cedex, France; EA4650, UNICAEN, 14000 Caen, France
| | - B Cariou
- Institut du thorax, Inserm, CNRS, University of Nantes, CHU Nantes, 44000 Nantes, France
| | - X Prieur
- Institut du thorax, Inserm, CNRS, University of Nantes, 44000 Nantes, France.
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32
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Dong LY, Yao LP, Zhao J, Jin KK, Qiu XX. Captopril inhibits calpain‑mediated apoptosis of myocardial cells in diabetic rats and improves cardiac function. Mol Med Rep 2018; 18:2300-2306. [PMID: 29956776 DOI: 10.3892/mmr.2018.9192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 03/12/2018] [Indexed: 11/05/2022] Open
Abstract
To explore the effects of captopril on calpain‑mediated apoptosis of myocardial cells and cardiac function in diabetic rats, 30 adult male Sprague‑Dawley rats were randomly divided into three groups: Negative control (NC group), untreated diabetic rats (DM group) and diabetic rats treated with captopril (Cap group). Diabetes was induced by streptozotocin injection. Captopril was intragastrically administered at a daily dose of 50 mg/kg for 12 weeks; the NC and DM groups received an equivalent volume of saline. After 12 weeks of treatment, left ventricular systolic pressure (LVSP), left ventricular end‑diastolic pressure (LVDEP), maximal rate of left ventricular pressure increase (+dp/dtmax), maximal rate of left ventricular pressure decrease (‑dp/dtmax) and left ventricular mass index (LVMI) were measured. The levels of calpain‑1, calpain‑2, B‑cell lymphoma (Bcl)‑2, Bcl‑2 associated protein X (Bax) and total caspase‑3 were detected in cardiac tissue by western blot analysis. The apoptotic index (AI) was assessed with a terminal deoxynucleotidyl transferase‑mediated dUTP nick‑end labeling assay. The ultrastructure of cardiac tissue was determined by transmission electron microscopy. Compared with the NC group, LVDEP and LVMI were increased, whereas LVSP, +dp/dtmax and ‑dp/dtmax were decreased in the DM group. In the Cap group, LVDEP and LVMI were decreased, whereas LVSP, +dp/dtmax and ‑dp/dtmax were increased compared with the DM group. Bcl‑2 protein expression was decreased, whereas the levels of calpain‑1, calpain‑2, Bax and total caspase‑3 protein were increased in the DM group, compared with the NC group. Cap treatment increased Bcl‑2 protein expression and decreased calpain‑1, calpain‑2, Bax and total caspase‑3 protein expression compared with the DM group. Additionally, the AI was increased in the DM group compared with the NC group, and decreased in the Cap group compared with the DM group. Furthermore, ultrastructural examination demonstrated that myocardial cell injury was reduced in the Cap group compared with the DM group. Therefore, captopril improved myocardial structure and ventricular function, by inhibiting calpain‑1 and calpain‑2 activation, increasing Bcl‑2 expression, reducing Bax expression and subsequently inhibiting caspase‑3‑dependent apoptosis.
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Affiliation(s)
- Li-Ya Dong
- Department of Cardiothoracic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200092, P.R. China
| | - Li-Ping Yao
- Department of Cardiothoracic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200092, P.R. China
| | - Jing Zhao
- Department of Pathophysiology, Anqing Medical College, Anqing, Anhui 246052, P.R. China
| | - Ke-Ke Jin
- Department of Pathophysiology, Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xiao-Xiao Qiu
- Department of Pathophysiology, Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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33
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Zhang X, Lin Q, Chen J, Wei T, Li C, Zhao L, Gao H, Zheng H. High Glucose-Induced Cardiomyocyte Death May Be Linked to Unbalanced Branched-Chain Amino Acids and Energy Metabolism. Molecules 2018; 23:molecules23040807. [PMID: 29614759 PMCID: PMC6017930 DOI: 10.3390/molecules23040807] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/26/2018] [Accepted: 03/29/2018] [Indexed: 12/13/2022] Open
Abstract
High glucose-induced cardiomyocyte death is a common symptom in advanced-stage diabetic patients, while its metabolic mechanism is still poorly understood. The aim of this study was to explore metabolic changes in high glucose-induced cardiomyocytes and the heart of streptozotocin-induced diabetic rats by 1H-NMR-based metabolomics. We found that high glucose can promote cardiomyocyte death both in vitro and in vivo studies. Metabolomic results show that several metabolites exhibited inconsistent variations in vitro and in vivo. However, we also identified a series of common metabolic changes, including increases in branched-chain amino acids (BCAAs: leucine, isoleucine and valine) as well as decreases in aspartate and creatine under high glucose condition. Moreover, a reduced energy metabolism could also be a common metabolic characteristic, as indicated by decreases in ATP in vitro as well as AMP, fumarate and succinate in vivo. Therefore, this study reveals that a decrease in energy metabolism and an increase in BCAAs metabolism could be implicated in high glucose-induced cardiomyocyte death.
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Affiliation(s)
- Xi Zhang
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Qiuting Lin
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Jiuxia Chen
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Tingting Wei
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Chen Li
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Liangcai Zhao
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Hongchang Gao
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Hong Zheng
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
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Chocry M, Leloup L, Kovacic H. Reversion of resistance to oxaliplatin by inhibition of p38 MAPK in colorectal cancer cell lines: involvement of the calpain / Nox1 pathway. Oncotarget 2017; 8:103710-103730. [PMID: 29262595 PMCID: PMC5732761 DOI: 10.18632/oncotarget.21780] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/21/2017] [Indexed: 12/19/2022] Open
Abstract
Oxaliplatin is a major treatment for metastatic colorectal cancer, however its effectiveness is greatly diminished by the development of resistances. Our previous work has shown that oxaliplatin efficacy depends on the reactive oxygen species (ROS) produced by Nox1. In this report, we investigated Nox1 involvement in the survival mechanisms of oxaliplatin resistant cell lines that we have selected. Our results show that basal ROS production by Nox1 is increased in resistant cells. Whereas the transitory Nox1-dependent production of superoxide contributes to the cytotoxicity of oxaliplatin in sensitive cells, oxaliplatin treatment of resistant cells leads to a decrease in the production of superoxide associated with an increase of H2O2 and a decreased cytotoxicity of oxaliplatin. We have shown that calpains regulate differently Nox1 according to the sensitivity of the cells to oxaliplatin. In sensitive cells, calpains inhibit Nox1 by cleaving NoxA1 leading to a transient ROS production necessary for oxaliplatin cytotoxic effects. In contrast, in resistant cells calpain activation is associated with an increase of Nox1 activity through Src kinases, inducing a strong and maintained ROS production responsible for cell survival. Using a kinomic study we have shown that this overactivation of Nox1 results in an increase of p38 MAPK activity allowing the resistant cells to escape apoptosis. Our results show that the modulation of Nox1 activity in the context of anticancer treatment remains complex. However, a strategy to maximize Nox1 activation while inhibiting the p38 MAPK-dependent escape routes appears to be an option of choice to optimize oxaliplatin efficiency.
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Affiliation(s)
- Mathieu Chocry
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
| | - Ludovic Leloup
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
| | - Hervé Kovacic
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
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35
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Metabolic stress-induced cardiomyopathy is caused by mitochondrial dysfunction due to attenuated Erk5 signaling. Nat Commun 2017; 8:494. [PMID: 28887535 PMCID: PMC5591279 DOI: 10.1038/s41467-017-00664-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 07/18/2017] [Indexed: 12/01/2022] Open
Abstract
The prevalence of cardiomyopathy from metabolic stress has increased dramatically; however, its molecular mechanisms remain elusive. Here, we show that extracellular signal-regulated protein kinase 5 (Erk5) is lost in the hearts of obese/diabetic animal models and that cardiac-specific deletion of Erk5 in mice (Erk5-CKO) leads to dampened cardiac contractility and mitochondrial abnormalities with repressed fuel oxidation and oxidative damage upon high fat diet (HFD). Erk5 regulation of peroxisome proliferator-activated receptor γ co-activator-1α (Pgc-1α) is critical for cardiac mitochondrial functions. More specifically, we show that Gp91phox activation of calpain-1 degrades Erk5 in free fatty acid (FFA)-stressed cardiomyocytes, whereas the prevention of Erk5 loss by blocking Gp91phox or calpain-1 rescues mitochondrial functions. Similarly, adeno-associated virus 9 (AAV9)-mediated restoration of Erk5 expression in Erk5-CKO hearts prevents cardiomyopathy. These findings suggest that maintaining Erk5 integrity has therapeutic potential for treating metabolic stress-induced cardiomyopathy. The mechanistic link between metabolic stress and associated cardiomyopathy is unknown. Here the authors show that high fat diet causes calpain-1-dependent degradation of ERK5 leading to mitochondrial dysfunction, suggesting the maintenance of cardiac ERK5 as a therapeutic approach for cardiomyopathy prevention and/or treatment.
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36
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Ischemia/Reperfusion Injury following Acute Myocardial Infarction: A Critical Issue for Clinicians and Forensic Pathologists. Mediators Inflamm 2017; 2017:7018393. [PMID: 28286377 PMCID: PMC5327760 DOI: 10.1155/2017/7018393] [Citation(s) in RCA: 257] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/26/2016] [Accepted: 11/30/2016] [Indexed: 12/27/2022] Open
Abstract
Acute myocardial infarction (AMI) is a leading cause of morbidity and mortality. Reperfusion strategies are the current standard therapy for AMI. However, they may result in paradoxical cardiomyocyte dysfunction, known as ischemic reperfusion injury (IRI). Different forms of IRI are recognized, of which only the first two are reversible: reperfusion-induced arrhythmias, myocardial stunning, microvascular obstruction, and lethal myocardial reperfusion injury. Sudden death is the most common pattern for ischemia-induced lethal ventricular arrhythmias during AMI. The exact mechanisms of IRI are not fully known. Molecular, cellular, and tissue alterations such as cell death, inflammation, neurohumoral activation, and oxidative stress are considered to be of paramount importance in IRI. However, comprehension of the exact pathophysiological mechanisms remains a challenge for clinicians. Furthermore, myocardial IRI is a critical issue also for forensic pathologists since sudden death may occur despite timely reperfusion following AMI, that is one of the most frequently litigated areas of cardiology practice. In this paper we explore the literature regarding the pathophysiology of myocardial IRI, focusing on the possible role of the calpain system, oxidative-nitrosative stress, and matrix metalloproteinases and aiming to foster knowledge of IRI pathophysiology also in terms of medicolegal understanding of sudden deaths following AMI.
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Protective Effects of Emodin-Induced Neutrophil Apoptosis via the Ca 2+-Caspase 12 Pathway against SIRS in Rats with Severe Acute Pancreatitis. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1736024. [PMID: 28078280 PMCID: PMC5203873 DOI: 10.1155/2016/1736024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 10/26/2016] [Indexed: 12/12/2022]
Abstract
Severe acute pancreatitis (SAP) results in high mortality. This is partly because of early multiple organ dysfunction syndromes that are usually caused by systemic inflammatory response syndrome (SIRS). Many studies have reported the beneficial effects of emodin against SAP with SIRS. However, the exact mechanism underlying the effect of emodin remains unclear. This study was designed to explore the protective effects and underlying mechanisms of emodin against SIRS in rats with SAP. In the present study, cytosolic Ca2+ levels, calpain 1 activity, and the expression levels of the active fragments of caspases 12 and 3 decreased in neutrophils from rats with SAP and increased after treatment with emodin. Delayed neutrophil apoptosis occurred in rats with SAP and emodin was able to reverse this delayed apoptosis and inhibit SIRS. The effect of emodin on calpain 1 activity, the expression levels of the active fragments of caspases 12 and 3, neutrophil apoptosis, and SIRS scores were attenuated by PD150606 (an inhibitor of calpain). These results suggest that emodin inhibits SIRS in rats with SAP by inducing circulating neutrophil apoptosis via the Ca2+-calpain 1-caspase 12-caspase 3 signaling pathway.
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38
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Freitas ACS, Figueiredo MJ, Campos EC, Soave DF, Ramos SG, Tanowitz HB, Celes MRN. Activation of Both the Calpain and Ubiquitin-Proteasome Systems Contributes to Septic Cardiomyopathy through Dystrophin Loss/Disruption and mTOR Inhibition. PLoS One 2016; 11:e0166839. [PMID: 27880847 PMCID: PMC5120800 DOI: 10.1371/journal.pone.0166839] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 11/05/2016] [Indexed: 11/18/2022] Open
Abstract
Cardiac dysfunction caused by the impairment of myocardial contractility has been recognized as an important factor contributing to the high mortality in sepsis. Calpain activation in the heart takes place in response to increased intracellular calcium influx resulting in proteolysis of structural and contractile proteins with subsequent myocardial dysfunction. The purpose of the present study was to test the hypothesis that increased levels of calpain in the septic heart leads to disruption of structural and contractile proteins and that administration of calpain inhibitor-1 (N-acetyl-leucinyl-leucinyl-norleucinal (ALLN)) after sepsis induced by cecal ligation and puncture prevents cardiac protein degradation. We also tested the hypothesis that calpain plays a role in the modulation of protein synthesis/degradation through the activation of proteasome-dependent proteolysis and inhibition of the mTOR pathway. Severe sepsis significantly increased heart calpain-1 levels and promoted ubiquitin and Pa28β over-expression with a reduction in the mTOR levels. In addition, sepsis reduced the expression of structural proteins dystrophin and β-dystroglycan as well as the contractile proteins actin and myosin. ALLN administration prevented sepsis-induced increases in calpain and ubiquitin levels in the heart, which resulted in decreased of structural and contractile proteins degradation and basal mTOR expression levels were re-established. Our results support the concept that increased calpain concentrations may be part of an important mechanism of sepsis-induced cardiac muscle proteolysis.
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Affiliation(s)
- Ana Caroline Silva Freitas
- Department of Pathology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil
| | - Maria Jose Figueiredo
- Department of Pathology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil
| | - Erica Carolina Campos
- Department of Physiotherapy, Faculty of Physical Education, Federal University of Uberlandia, Minas Gerais, Brazil
| | - Danilo Figueiredo Soave
- Department of Histology, Embryology and Cellular Biology, Federal University of Goias, Goias, Brazil
| | - Simone Gusmao Ramos
- Department of Pathology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil
| | - Herbert B. Tanowitz
- Departments of Pathology and medicine, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, United States of America
| | - Mara Rúbia N. Celes
- Department of Pathology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goias, Brazil
- * E-mail: ,
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Prohibitin overexpression improves myocardial function in diabetic cardiomyopathy. Oncotarget 2016; 7:66-80. [PMID: 26623724 PMCID: PMC4807983 DOI: 10.18632/oncotarget.6384] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 11/16/2015] [Indexed: 01/07/2023] Open
Abstract
Prohibitin (PHB) is a highly conserved protein implicated in various cellular functions including proliferation, apoptosis, tumor suppression, transcription, and mitochondrial protein folding. However, its function in diabetic cardiomyopathy (DCM) is still unclear. In vivo, type 2 diabetic rat model was induced by using a high-fat diet and low-dose streptozotocin. Overexpression of the PHB protein in the model rats was achieved by injecting lentivirus carrying PHB cDNA via the jugular vein. Characteristics of type 2 DCM were evaluated by metabolic tests, echocardiography and histopathology. Rats with DCM showed severe insulin resistance, left ventricular dysfunction, fibrosis and apoptosis. PHB overexpression ameliorated the disease. Cardiofibroblasts (CFs) and H9c2 cardiomyoblasts were used in vitro to investigate the mechanism of PHB in altered function. In CFs treated with HG, PHB overexpression decreased expression of collagen, matrix metalloproteinase activity, and proliferation. In H9c2 cardiomyoblasts, PHB overexpression inhibited apoptosis induced by HG. Furthermore, the increased phosphorylation of extracellular signal–regulated kinase (ERK) 1/2 was significantly decreased and the inhibited phosphorylation of Akt was restored in DCM. Therefore, PHB may be a new therapeutic target for human DCM.
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40
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Ji J, Su L, Liu Z. Critical role of calpain in inflammation. Biomed Rep 2016; 5:647-652. [PMID: 28101338 DOI: 10.3892/br.2016.785] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 09/14/2016] [Indexed: 02/07/2023] Open
Abstract
Calpains are a family of cysteine proteases, implicated in a wide range of cellular calcium-regulated functions. Evidence from previous studies using an inhibitor of calpain indicates that calpain activation is involved in the process of numerous inflammation-associated diseases. As a result of in-depth studies, calpains have been proposed to influence the process of inflammation via a variety of mechanisms. The aim of the present study is to provide an overview of recent reports regarding the role of calpain in the process of inflammation, including regulation of immune cell migration, modulation of the activation of inflammatory mediators, degradation of certain associated proteins and induction of cell apoptosis. Understanding these mechanisms may contribute to the investigation of novel therapeutic targets for inflammation-associated diseases.
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Affiliation(s)
- Jingjing Ji
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China; Graduate School, Guangzhou Medical University, Guangzhou, Guangdong 510010, P.R. China
| | - Lei Su
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China; Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Zhifeng Liu
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China; Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
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Qiao Y, Zhao Y, Liu Y, Ma N, Wang C, Zou J, Liu Z, Zhou Z, Han D, He J, Sun Q, Liu Y, Xu C, Du Z, Huang H. miR-483-3p regulates hyperglycaemia-induced cardiomyocyte apoptosis in transgenic mice. Biochem Biophys Res Commun 2016; 477:541-547. [DOI: 10.1016/j.bbrc.2016.06.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 06/09/2016] [Indexed: 11/30/2022]
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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] [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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Abstract
Although cardiac resuscitation can revive the whole body, the mechanisms are unclear. To this end, we propose that reviving a dead/dysfunctional cardiomyocyte will shed light on resuscitation mechanisms and pave the way to treat cardiac myopathies. The degradation of the myocyte cytoskeleton by the proteasome system which involves calpains, ubiquitin, caspases and matrix metalloproteases is the main focus of this review. The activation of calpains beyond the calpastatin-mediated inhibition due to extensive calcium harbor can lead to titin degradation, damage to the sarcomere and contractile dysfunction. The ubiquitin proteasome system can disturb the protein homeostasis within the cell and generate a dysfunctional myocyte. The matrix metalloproteases disrupt the collagen/elastin ratio and connexins to generate arrhythmias. The concept of cardiac resuscitation stems from protecting the myocyte cytoskeleton and keeping the protein homeostasis intact through management of the degradation machinery. In this regard, proteasome inhibitors for the degradation machinery have an elegant space. Recently exosomes have been identified potentially, as carriers of microRNAs or proteins that can modify the target cells. Exosomes loaded with the inhibitor "cargo" which comprises microRNAs, siRNAs or proteins to inhibit the degradation machinery can be a method of choice for cardiac resuscitation-a process difficult to execute.
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Chang H, Sheng JJ, Zhang L, Yue ZJ, Jiao B, Li JS, Yu ZB. ROS-Induced Nuclear Translocation of Calpain-2 Facilitates Cardiomyocyte Apoptosis in Tail-Suspended Rats. J Cell Biochem 2016; 116:2258-69. [PMID: 25820554 DOI: 10.1002/jcb.25176] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 03/24/2015] [Indexed: 12/21/2022]
Abstract
Isoproterenol (ISO) induced nuclear translocation of calpain-2 which further increased susceptibility of cardiomyocyte apoptosis in tail-suspended rats. The underlying mechanisms remain elusive. In the present study, the results showed that ISO (10 nM) significantly elevated NADPH oxidases (NOXs) activity and NOXs-derived ROS productions which induced nuclear translocation of calpain-2 in cardiomyocytes of tail-suspended rats. In contrast, the inhibition of NADPH oxidase or cleavage of ROS not only reduced ROS productions, but also resisted nuclear translocation of calpain-2 and decreased ISO-induced apoptosis of cardiomyocyte in tail-suspended rats. ISO also increased the constitutive binding between calpain-2 and Ca(2+)/calmodulin-dependent protein kinase II δB (CaMK II δB) in nuclei, concomitant with the promotion of CaMK II δB degradation and subsequent down-regulation of Bcl-2 mRNA expression and the ratio of Bcl-2 to Bax protein in tail-suspended rat cardiomyocytes. These effects of ISO on cardiomyocytes were abolished by a calpain inhibitor PD150606. Inhibition of calpain significantly reduced ISO-induced loss of the mitochondrial membrane potential, cytochrome c release into the cytoplasm, as well as the activation of caspase-3 and caspase-9 in mitochondrial apoptotic pathway. In summary, the above results suggest that ISO increased NOXs-derived ROS which activated nuclear translocation of calpain-2, subsequently nuclear calpain-2 degraded CaMK II δB which reduced the ratio of Bcl-2 to Bax, and finally the mitochondria apoptosis pathway was triggered in tail-suspended rat cardiomyocytes. Therefore, calpain-2 may represent a potentially therapeutic target for prevention of oxidative stress-associated cardiomyocyte apoptosis.
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Affiliation(s)
- Hui Chang
- Department of Aerospace Physiology, Fourth Military Medical University, 169 Changlexi Road, Xi'an, 710032,, China
| | - Juan-Juan Sheng
- Department of Aerospace Physiology, Fourth Military Medical University, 169 Changlexi Road, Xi'an, 710032,, China
| | | | - Zhi-Jie Yue
- Department of Aerospace Physiology, Fourth Military Medical University, 169 Changlexi Road, Xi'an, 710032,, China
| | | | - Jin-Sheng Li
- Department of Aerospace Physiology, Fourth Military Medical University, 169 Changlexi Road, Xi'an, 710032,, China
| | - Zhi-Bin Yu
- Department of Aerospace Physiology, Fourth Military Medical University, 169 Changlexi Road, Xi'an, 710032,, China
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Jose Corbalan J, Vatner DE, Vatner SF. Myocardial apoptosis in heart disease: does the emperor have clothes? Basic Res Cardiol 2016; 111:31. [PMID: 27043720 DOI: 10.1007/s00395-016-0549-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/24/2016] [Indexed: 01/06/2023]
Abstract
Since the discovery of a novel mechanism of cell death that differs from traditional necrosis, i.e., apoptosis, there have been numerous studies concluding that increased apoptosis augments myocardial infarction and heart failure and that limiting apoptosis protects the heart. Importantly, the vast majority of cells in the heart are non-myocytes with only roughly 30 % myocytes, yet almost the entire field studying apoptosis in the heart has disregarded non-myocyte apoptosis, e.g., only 4.7 % of 423 studies on myocardial apoptosis in the past 3 years quantified non-myocyte apoptosis. Accordingly, we reviewed the history of apoptosis in the heart focusing first on myocyte apoptosis, followed by the history of non-myocyte apoptosis in myocardial infarction and heart failure. Apoptosis of several of the major non-myocyte cell types in the heart (cardiac fibroblasts, endothelial cells, vascular smooth muscle cells, macrophages and leukocytes) may actually be responsible for affecting the severity of myocardial infarction and heart failure. In summary, even though it is now known that the majority of apoptosis in the heart occurs in non-myocytes, very little work has been done to elucidate the mechanisms by which non-myocyte apoptosis might be responsible for the adverse effects of apoptosis in myocardial infarction and heart failure. The goal of this review is to provide an impetus for future work in this field on non-myocyte apoptosis that will be required for a better understanding of the role of apoptosis in the heart.
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Affiliation(s)
- J Jose Corbalan
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers-New Jersey Medical School, Newark, NJ, 07103, USA
| | - Dorothy E Vatner
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers-New Jersey Medical School, Newark, NJ, 07103, USA
| | - Stephen F Vatner
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers-New Jersey Medical School, Newark, NJ, 07103, USA.
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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: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [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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Riojas-Hernández A, Bernal-Ramírez J, Rodríguez-Mier D, Morales-Marroquín FE, Domínguez-Barragán EM, Borja-Villa C, Rivera-Álvarez I, García-Rivas G, Altamirano J, García N. Enhanced oxidative stress sensitizes the mitochondrial permeability transition pore to opening in heart from Zucker Fa/fa rats with type 2 diabetes. Life Sci 2015; 141:32-43. [DOI: 10.1016/j.lfs.2015.09.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 08/18/2015] [Accepted: 09/22/2015] [Indexed: 12/13/2022]
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Sheng JJ, Chang H, Yu ZB. Nuclear Translocation of Calpain-2 Mediates Apoptosis of Hypertrophied Cardiomyocytes in Transverse Aortic Constriction Rat. J Cell Physiol 2015; 230:2743-54. [PMID: 25820375 DOI: 10.1002/jcp.24999] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/23/2015] [Indexed: 01/04/2023]
Abstract
Apoptosis of cardiomyocytes plays an important role in the transition from cardiac hypertrophy to heart failure. Hypertrophied cardiomyocytes show enhanced susceptibility to apoptosis. Therefore, the aim of this study was to determine the susceptibility to apoptosis and its mechanism in hypertrophied cardiomyocytes using a rat model of transverse abdominal aortic constriction (TAC). Sixteen weeks of TAC showed compensatory and pathological hypertrophy in the left ventricle. TUNEL-positive nuclei were significantly increased in TAC with angiotensin II (Ang II) treatment. Calpain inhibitor, PD150606, effectively inhibited Ang II-induced apoptosis of hypertrophied cardiomyocytes. Ang II increased nuclear translocation of intracellular Ca(2+) activated calpain-2 in hypertrophied cardiomyocytes. Ang II enhanced the interaction between activated calpain-2 and Ca(2+)/calmodulin-dependent protein kinase II δB (CaMKIIδB), and promoted the degradation of CaMKIIδB by calpain-2 in the nuclei of hypertrophied cardiomyocytes. Consequently, the depressed CaMKIIδB downregulated the expression of antiapoptotic Bcl-2 leading to mitochondrial depolarization and release of cytochrome c led to apoptosis of hypertrophied cardiomyocytes. In conclusion, hypertrophied cardiomyocytes show increased susceptibility to apoptosis during Ang II stimulation via nuclear calpain-2 and CaMKIIδB pathway.
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Affiliation(s)
- Juan-Juan Sheng
- Department of Aerospace Physiology, Fourth Military Medical University, 169# Changlexi Road, Xi'an, China
| | - Hui Chang
- Department of Aerospace Physiology, Fourth Military Medical University, 169# Changlexi Road, Xi'an, China
| | - Zhi-Bin Yu
- Department of Aerospace Physiology, Fourth Military Medical University, 169# Changlexi Road, Xi'an, China
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Kharatmal SB, Singh JN, Sharma SS. Calpain inhibitor, MDL 28170 confer electrophysiological, nociceptive and biochemical improvement in diabetic neuropathy. Neuropharmacology 2015; 97:113-21. [DOI: 10.1016/j.neuropharm.2015.05.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 05/14/2015] [Accepted: 05/27/2015] [Indexed: 10/23/2022]
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Wan TT, Li XF, Sun YM, Li YB, Su Y. Role of the calpain on the development of diabetes mellitus and its chronic complications. Biomed Pharmacother 2015; 74:187-90. [PMID: 26349983 DOI: 10.1016/j.biopha.2015.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 08/03/2015] [Indexed: 12/26/2022] Open
Abstract
Diabetes mellitus (DM) is associated with acute and chronic complications that cause major morbidity and significant mortality. Calpains, a family of Ca(2+)-dependent cytosolic cysteine proteases, can modulate their substrates' structure and function through limited proteolytic activity. Calpain is a ubiquitous calcium-sensitive protease that is essential for normal physiologic function. However, alterations in calcium homeostasis lead to pathologic activation of calpain in diabetes mellitus. Since not much is known on the relationship between calpain and diabetes mellitus, this review outlines the contribution of calpain to chronic complications of diabetes mellitus, such as diabetic cardiomyopathy, diabetic nephropathy and diabetic retinopathy.
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Affiliation(s)
- Ting-Ting Wan
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Xiu-Fen Li
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yan-Ming Sun
- Department of Cardiology, the First Clinical Hospital of Harbin Medical University, Harbin, 150086, China
| | - Yan-Bo Li
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Ying Su
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.
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