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Jiao JH, Gao L, Yong WL, Kou ZY, Ren ZQ, Cai R, Chu GY, Pang WJ. Resveratrol improves estrus disorder induced by bisphenol A through attenuating oxidative stress, autophagy, and apoptosis. J Biochem Mol Toxicol 2022; 36:e23120. [PMID: 35670589 DOI: 10.1002/jbt.23120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/26/2022] [Accepted: 05/28/2022] [Indexed: 11/08/2022]
Abstract
Bisphenol A (BPA), as a widely used plasticizer, is easily absorbed by animals and humans. It has certain toxic effects on various tissues, including liver, heart, kidney, testis, and ovary. The toxic effects of BPA on animal reproduction have aroused widespread concern, but its regulatory mechanism and antidote in female animals estrus cycle remain unclear. In this study, the results displayed that BPA destroyed the normal estrus cycle of mice through decreasing the levels of progesterone and estradiol. Furthermore, BPA significantly increased the levels of oxidative stress, autophagy, and apoptosis in ovaries and granulosa cells. Interestingly, we found that the natural antioxidant resveratrol rescued estrus disorder and impaired estradiol secretion, reduced the abnormal reactive oxygen species accumulation, autophagy, and apoptosis in BPA exposed ovarian tissues. Moreover, transmission electron microscopy showed that resveratrol reduced BPA-induced autophagic vesicles formation and flow cytometry showed that resveratrol inhibited the increase of apoptotic cells induced by BPA on granulosa cells. Therefore, the supplement of resveratrol could restore BPA-induced estrus disorder by protecting ovarian granulosa cells. Overall, resveratrol is a potential drug to alleviate BPA-induced estrous cycle disorders and ovarian damage.
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Affiliation(s)
- Jun-Heng Jiao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Lei Gao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Wen-Long Yong
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Zhong-Yun Kou
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Zhi-Qiang Ren
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Rui Cai
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Gui-Yan Chu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
| | - Wei-Jun Pang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi, China
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Sathyanarayana AR, Lu CK, Liaw CC, Chang CC, Han HY, Green BD, Huang WJ, Huang C, He WD, Lee LC, Liu HK. 1,2,3,4,6-Penta-O-galloyl-d-glucose Interrupts the Early Adipocyte Lifecycle and Attenuates Adiposity and Hepatic Steatosis in Mice with Diet-Induced Obesity. Int J Mol Sci 2022; 23:4052. [PMID: 35409415 DOI: 10.3390/ijms23074052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 12/31/2022] Open
Abstract
Phytochemicals that interrupt adipocyte lifecycle can provide anti-obesity effects. 1,2,3,4,6-penta-O-galloyl-d-glucose (PGG) is a tannin with two isomers that occurs widely in plants and exhibits various pharmacological activities. The aim of the investigation is to comprehensively examine effects of PGG isomer(s) on adipocyte lifecycle and diet-induced obesity. Human mesenchymal stem cells (hMSC), 3T3-L1 fibroblasts, and H4IIE hepatoma cells were used to determine the effects of PGG isomers on cell viability and adipogenesis. Mice with diet-induced obesity were generated from male C57/BL6 mice fed with a 45% high fat diet. Oral administration of β-PGG (0.1 and 5 mg/kg) lasted for 14 weeks. Viability was reduced by repeated PGG treatment in hMSC, preadipocytes, and cells under differentiation. PGG mainly induces apoptosis, and this effect is independent of its insulin mimetic action. In vivo, administration of β-PGG attenuated shortening of the colon, hyperlipidaemia, fat cells and islet hypertrophy in DIO mice. Hepatic steatosis and related gene expression were improved along with glucose intolerance. Increased serum adiponectin, leptin, and glucagon-like peptide-1 levels were also observed. In conclusion, repeated PGG treatment interrupts the adipocyte lifecycle. PGG administration reduces adiposity and fatty liver development in DIO mice, and therefore, PGG could aid in clinical management of obesity.
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3
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Khan H, Garg N, Singh TG, Kaur A, Thapa K. Calpain Inhibitors as Potential Therapeutic Modulators in Neurodegenerative Diseases. Neurochem Res 2022. [PMID: 34982393 DOI: 10.1007/s11064-021-03521-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 02/07/2023]
Abstract
It is considered a significant challenge to understand the neuronal cell death mechanisms with a suitable cure for neurodegenerative disorders in the coming years. Calpains are one of the best-considered "cysteine proteases activated" in brain disorders. Calpain is an important marker and mediator in the pathophysiology of neurodegeneration. Calpain activation being the essential neurodegenerative factor causing apoptotic machinery activation, it is crucial to develop reliable and effective approaches to prevent calpain-mediated apoptosis in degenerating neurons. It has been recently seen that the "inhibition of calpain activation" has appeared as a possible therapeutic target for managing neurodegenerative diseases. A systematic literature review of PubMed, Medline, Bentham, Scopus, and EMBASE (Elsevier) databases was conducted. The present article reviews the basic pathobiology and role of selective calpain inhibitors used in various neurodegenerative diseases as a therapeutic target.
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Khodayari N, Wang RL, Oshins R, Lu Y, Millett M, Aranyos AM, Mostofizadeh S, Scindia Y, Flagg TO, Brantly M. The Mechanism of Mitochondrial Injury in Alpha-1 Antitrypsin Deficiency Mediated Liver Disease. Int J Mol Sci 2021; 22:13255. [PMID: 34948056 PMCID: PMC8704552 DOI: 10.3390/ijms222413255] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022] Open
Abstract
Alpha-1 antitrypsin deficiency (AATD) is caused by a single mutation in the SERPINA1 gene, which culminates in the accumulation of misfolded alpha-1 antitrypsin (ZAAT) within the endoplasmic reticulum (ER) of hepatocytes. AATD is associated with liver disease resulting from hepatocyte injury due to ZAAT-mediated toxic gain-of-function and ER stress. There is evidence of mitochondrial damage in AATD-mediated liver disease; however, the mechanism by which hepatocyte retention of aggregated ZAAT leads to mitochondrial injury is unknown. Previous studies have shown that ER stress is associated with both high concentrations of fatty acids and mitochondrial dysfunction in hepatocytes. Using a human AAT transgenic mouse model and hepatocyte cell lines, we show abnormal mitochondrial morphology and function, and dysregulated lipid metabolism, which are associated with hepatic expression and accumulation of ZAAT. We also describe a novel mechanism of ZAAT-mediated mitochondrial dysfunction. We provide evidence that misfolded ZAAT translocates to the mitochondria for degradation. Furthermore, inhibition of ZAAT expression restores the mitochondrial function in ZAAT-expressing hepatocytes. Altogether, our results show that ZAAT aggregation in hepatocytes leads to mitochondrial dysfunction. Our findings suggest a plausible model for AATD liver injury and the possibility of mechanism-based therapeutic interventions for AATD liver disease.
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Affiliation(s)
- Nazli Khodayari
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Rejean L. Wang
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Regina Oshins
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Yuanqing Lu
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Michael Millett
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Alek M. Aranyos
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Sayedamin Mostofizadeh
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA;
| | - Yogesh Scindia
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Tammy O. Flagg
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
| | - Mark Brantly
- Division of Pulmonary, Department of Medicine, University of Florida, Gainesville, FL 32610, USA; (R.L.W.); (R.O.); (Y.L.); (M.M.); (A.M.A.); (Y.S.); (T.O.F.)
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5
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Wang Y, Zhang X, Wen Y, Li S, Lu X, Xu R, Li C. Endoplasmic Reticulum-Mitochondria Contacts: A Potential Therapy Target for Cardiovascular Remodeling-Associated Diseases. Front Cell Dev Biol 2021; 9:774989. [PMID: 34858991 PMCID: PMC8631538 DOI: 10.3389/fcell.2021.774989] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/08/2021] [Indexed: 12/14/2022] Open
Abstract
Cardiovascular remodeling occurs in cardiomyocytes, collagen meshes, and vascular beds in the progress of cardiac insufficiency caused by a variety of cardiac diseases such as chronic ischemic heart disease, chronic overload heart disease, myocarditis, and myocardial infarction. The morphological changes that occur as a result of remodeling are the critical pathological basis for the occurrence and development of serious diseases and also determine morbidity and mortality. Therefore, the inhibition of remodeling is an important approach to prevent and treat heart failure and other related diseases. The endoplasmic reticulum (ER) and mitochondria are tightly linked by ER-mitochondria contacts (ERMCs). ERMCs play a vital role in different signaling pathways and provide a satisfactory structural platform for the ER and mitochondria to interact and maintain the normal function of cells, mainly by involving various cellular life processes such as lipid metabolism, calcium homeostasis, mitochondrial function, ER stress, and autophagy. Studies have shown that abnormal ERMCs may promote the occurrence and development of remodeling and participate in the formation of a variety of cardiovascular remodeling-associated diseases. This review focuses on the structure and function of the ERMCs, and the potential mechanism of ERMCs involved in cardiovascular remodeling, indicating that ERMCs may be a potential target for new therapeutic strategies against cardiovascular remodeling-induced diseases.
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Affiliation(s)
- Yu Wang
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China.,Emergency Department, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xinrong Zhang
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ya Wen
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Sixuan Li
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiaohui Lu
- Emergency Department, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ran Xu
- Jinan Tianqiao People's Hospital, Jinan, China
| | - Chao Li
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
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Bahar E, Kim JY, Kim DC, Kim HS, Yoon H. Combination of Niraparib, Cisplatin and Twist Knockdown in Cisplatin-Resistant Ovarian Cancer Cells Potentially Enhances Synthetic Lethality through ER-Stress Mediated Mitochondrial Apoptosis Pathway. Int J Mol Sci 2021; 22:ijms22083916. [PMID: 33920140 PMCID: PMC8070209 DOI: 10.3390/ijms22083916] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/01/2021] [Accepted: 04/08/2021] [Indexed: 12/20/2022] Open
Abstract
Poly (ADP-ribose) polymerase 1 inhibitors (PARPi) are used to treat recurrent ovarian cancer (OC) patients due to greater survival benefits and minimal side effects, especially in those patients with complete or partial response to platinum-based chemotherapy. However, acquired resistance of platinum-based chemotherapy leads to the limited efficacy of PARPi monotherapy in most patients. Twist is recognized as a possible oncogene and contributes to acquired cisplatin resistance in OC cells. In this study, we show how Twist knockdown cisplatin-resistant (CisR) OC cells blocked DNA damage response (DDR) to sensitize these cells to a concurrent treatment of cisplatin as a platinum-based chemotherapy agent and niraparib as a PARPi on in vitro two-dimensional (2D) and three-dimensional (3D) cell culture. To investigate the lethality of PARPi and cisplatin on Twist knockdown CisR OC cells, two CisR cell lines (OV90 and SKOV3) were established using step-wise dose escalation method. In addition, in vitro 3D spheroidal cell model was generated using modified hanging drop and hydrogel scaffolds techniques on poly-2-hydroxylethly methacrylate (poly-HEMA) coated plates. Twist expression was strongly correlated with the expression of DDR proteins, PARP1 and XRCC1 and overexpression of both proteins was associated with cisplatin resistance in OC cells. Moreover, combination of cisplatin (Cis) and niraparib (Nira) produced lethality on Twist-knockdown CisR OC cells, according to combination index (CI). We found that Cis alone, Nira alone, or a combination of Cis+Nira therapy increased cell death by suppressing DDR proteins in 2D monolayer cell culture. Notably, the combination of Nira and Cis was considerably effective against 3D-cultures of Twist knockdown CisR OC cells in which Endoplasmic reticulum (ER) stress is upregulated, leading to initiation of mitochondrial-mediated cell death. In addition, immunohistochemically, Cis alone, Nira alone or Cis+Nira showed lower ki-67 (cell proliferative marker) expression and higher cleaved caspase-3 (apoptotic marker) immuno-reactivity. Hence, lethality of PARPi with the combination of Cis on Twist knockdown CisR OC cells may provide an effective way to expand the therapeutic potential to overcome platinum-based chemotherapy resistance and PARPi cross resistance in OC.
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Affiliation(s)
- Entaz Bahar
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea;
| | - Ji-Ye Kim
- Department of Pathology, Ilsan Paik Hospital, Inje University, Goyang 10380, Korea;
| | - Dong-Chul Kim
- Department of Pathology, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju 52828, Korea;
| | - Hyun-Soo Kim
- Samsung Medical Center, Department of Pathology and Translational Genomics, Sungkyunkwan University School of Medicine, Seoul 06351, Korea
- Correspondence: (H.-S.K.); (H.Y.); Tel.: +82-2-3410-1243 (H.-S.K.); +82-55-772-2422 (H.Y.)
| | - Hyonok Yoon
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea;
- Correspondence: (H.-S.K.); (H.Y.); Tel.: +82-2-3410-1243 (H.-S.K.); +82-55-772-2422 (H.Y.)
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Wang J, Zhang J, Ma Y, Zeng Y, Lu C, Yang F, Jiang N, Zhang X, Wang Y, Xu Y, Hou H, Jiang S, Zhuang S. WTAP promotes myocardial ischemia/reperfusion injury by increasing endoplasmic reticulum stress via regulating m 6A modification of ATF4 mRNA. Aging (Albany NY) 2021; 13:11135-11149. [PMID: 33819187 PMCID: PMC8109143 DOI: 10.18632/aging.202770] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 02/03/2021] [Indexed: 12/19/2022]
Abstract
Myocardial infarction (MI) is one of the leading causes of death. Wilms' tumor 1-associating protein (WTAP), one of the components of the m6A methyltransferase complex, has been shown to affect gene expression via regulating mRNA modification. Although WTAP has been implicated in various diseases, its role in MI is unclear. In this study, we found that hypoxia/reoxygenation (H/R) time-dependently increased WTAP expression, which in turn promoted endoplasmic reticulum (ER) stress and apoptosis, in human cardiomyocytes (AC16). H/R effects on ER stress and apoptosis were all blocked by silencing of WTAP, promoted by WTAP overexpression, and ameliorated by administration of ER stress inhibitor, 4-PBA. We then investigated the underlying molecular mechanism and found that WTAP affected m6A methylation of ATF4 mRNA to regulate its expression, and that the inhibitory effects of WTAP on ER stress and apoptosis were ATF4 dependent. Finally, WTAP’s effects on myocardial I/R injury were confirmed in vivo. WTAP promoted myocardial I/R injury through promoting ER stress and cell apoptosis by regulating m6A modification of ATF4 mRNA. These findings highlight the importance of WTAP in I/R injury and provide new insights into therapeutic strategies for MI.
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Affiliation(s)
- Jiayi Wang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Jiehan Zhang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Yan Ma
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Yuxiao Zeng
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Cheng Lu
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Fenghua Yang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Nianxin Jiang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Xuan Zhang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Yuhua Wang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Yinghui Xu
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Hanjing Hou
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Shengyang Jiang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
| | - Shaowei Zhuang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China
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8
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Lin Y, Chen C, Shih J, Cheng B, Chang C, Lin M, Ho C, Chen Z, Fisch S, Chang W. Dapagliflozin Improves Cardiac Hemodynamics and Mitigates Arrhythmogenesis in Mitral Regurgitation-Induced Myocardial Dysfunction. J Am Heart Assoc 2021; 10:e019274. [PMID: 33749310 PMCID: PMC8174384 DOI: 10.1161/jaha.120.019274] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Mitral regurgitation (MR) is a major contributor for heart failure (HF) and atrial fibrillation. Despite the advancement of MR surgeries, an effective medical therapy to mitigate MR progression is lacking. Sodium glucose cotransporter 2 inhibitors, a new class of antidiabetic drugs, has shown measurable benefits in reduction of HF hospitalization and cardiovascular mortality but the mechanism is unclear. We hypothesized that dapagliflozin (DAPA), a sodium glucose cotransporter 2 inhibitor, can improve cardiac hemodynamics in MR‐induced HF. Methods and Results Using a novel, mini‐invasive technique, we established a MR model in rats, in which MR induced left heart dilatation and functional decline. Half of the rats were randomized to be administered with DAPA at 10 mg/kg per day for 6 weeks. After evaluation of electrocardiography and echocardiography, hemodynamic studies were performed, followed by postmortem tissue analyses. Results showed that DAPA partially rescued MR‐induced impairment including partial restoration of left ventricular ejection fraction and end‐systolic pressure volume relationship. Despite no significant changes in electrocardiography at rest, rats treated with DAPA exhibited lower inducibility and decreased duration of pacing‐induced atrial fibrillation. DAPA also significantly attenuated cardiac fibrosis, cardiac expression of apoptosis, and endoplasmic reticulum stress‐associated proteins. Conclusions DAPA was able to suppress cardiac fibrosis and endoplasmic reticulum stress and improve hemodynamics in an MR‐induced HF rat model. The demonstrated DAPA effect on the heart and its association with key molecular contributors in eliciting its cardio‐protective function, provides a plausible point of DAPA as a potential strategy for MR‐induced HF.
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Affiliation(s)
- Yu‐Wen Lin
- Division of CardiologyDepartment of Internal MedicineChi‐Mei Medical CenterTainanTaiwan
| | - Chin‐Yu Chen
- Department of RadiologyChi‐Mei Medical CenterTainanTaiwan
| | - Jhih‐Yuan Shih
- Division of CardiologyDepartment of Internal MedicineChi‐Mei Medical CenterTainanTaiwan
| | - Bor‐Chih Cheng
- Division of Cardiovascular SurgeryChi‐Mei Medical CenterTainanTaiwan
- Department of BiotechnologySouthern Taiwan University of Science and TechnologyTainanTaiwan
| | - Ching‐Ping Chang
- Department of Medical ResearchChi Mei Medical CenterTainanTaiwan
| | - Mao‐Tsun Lin
- Department of Medical ResearchChi Mei Medical CenterTainanTaiwan
| | - Chung‐Han Ho
- Department of Hospital and Health Care AdministrationChi‐Mei Medical CenterTainanTaiwan
| | - Zhih‐Cherng Chen
- Division of CardiologyDepartment of Internal MedicineChi‐Mei Medical CenterTainanTaiwan
| | - Sudeshna Fisch
- Department of MedicineBrigham and Women's HospitalHarvard Medical SchoolBostonMA
| | - Wei‐Ting Chang
- Division of CardiologyDepartment of Internal MedicineChi‐Mei Medical CenterTainanTaiwan
- Department of BiotechnologySouthern Taiwan University of Science and TechnologyTainanTaiwan
- Institute of Clinical MedicineCollege of MedicineNational Cheng Kung UniversityTainanTaiwan
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9
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Kumar VK, Lackey A, Snyder J, Karhadkar S, Rao AD, DiCarlo A, Sato PY. Mitochondrial Membrane Intracellular Communication in Healthy and Diseased Myocardium. Front Cell Dev Biol 2020; 8:609241. [PMID: 33425917 PMCID: PMC7786191 DOI: 10.3389/fcell.2020.609241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/19/2020] [Indexed: 12/24/2022] Open
Abstract
Research efforts in the twenty-first century have been paramount to the discovery and development of novel pharmacological treatments in a variety of diseases resulting in improved life expectancy. Yet, cardiac disease remains a leading cause of morbidity and mortality worldwide. Over time, there has been an expansion in conditions such as atrial fibrillation (AF) and heart failure (HF). Although past research has elucidated specific pathways that participate in the development of distinct cardiac pathologies, the exact mechanisms of action leading to disease remain to be fully characterized. Protein turnover and cellular bioenergetics are integral components of cardiac diseases, highlighting the importance of mitochondria and endoplasmic reticulum (ER) in driving cellular homeostasis. More specifically, the interactions between mitochondria and ER are crucial to calcium signaling, apoptosis induction, autophagy, and lipid biosynthesis. Here, we summarize mitochondrial and ER functions and physical interactions in healthy physiological states. We then transition to perturbations that occur in response to pathophysiological challenges and how this alters mitochondrial–ER and other intracellular organelle interactions. Finally, we discuss lifestyle interventions and innovative therapeutic targets that may be used to restore beneficial mitochondrial and ER interactions, thereby improving cardiac function.
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Affiliation(s)
- Vishnu K Kumar
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Atreju Lackey
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Jonathan Snyder
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Sunil Karhadkar
- Department of Surgery, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Ajay D Rao
- Section of Endocrinology, Diabetes and Metabolism, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States.,Center for Metabolic Disease Research, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Antonio DiCarlo
- Department of Surgery, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Priscila Y Sato
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
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10
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Haas Bueno R, Recamonde-Mendoza M. Meta-analysis of Transcriptomic Data Reveals Pathophysiological Modules Involved with Atrial Fibrillation. Mol Diagn Ther 2020; 24:737-751. [PMID: 33095430 DOI: 10.1007/s40291-020-00497-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Atrial fibrillation (AF) is a complex disease and affects millions of people around the world. The biological mechanisms that are involved with AF are complex and still need to be fully elucidated. Therefore, we performed a meta-analysis of transcriptome data related to AF to explore these mechanisms aiming at more sensitive and reliable results. METHODS Ten public transcriptomic datasets were downloaded, analyzed for quality control, and individually pre-processed. Differential expression analysis was carried out for each dataset, and the results were meta-analytically aggregated using the rth ordered p value method. We analyzed the final list of differentially expressed genes through network analysis, namely topological and modularity analysis, and functional enrichment analysis. RESULTS The meta-analysis of transcriptomes resulted in 1197 differentially expressed genes, whose protein-protein interaction network presented 39 hubs-bottlenecks and four main identified functional modules. These modules were enriched for 39, 20, 64, and 10 biological pathways involved with the pathophysiology of AF, especially with the disease's structural and electrical remodeling processes. The stress of the endoplasmic reticulum, protein catabolism, oxidative stress, and inflammation are some of the enriched processes. Among hub-bottlenecks genes, which are highly connected and probably have a key role in regulating these processes, HSPA5, ANK2, CTNNB1, and MAPK1 were identified. CONCLUSION Our approach based on transcriptome meta-analysis revealed a set of key genes that demonstrated consistent overall changes in expression patterns associated with AF despite data heterogeneity related, among others, to type of tissue. Further experimental investigation of our findings may shed light on the pathophysiology of the disease and contribute to the identification of new therapeutic targets.
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Affiliation(s)
- Rodrigo Haas Bueno
- Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
- Bioinformatics Core, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Mariana Recamonde-Mendoza
- Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil.
- Bioinformatics Core, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil.
- Institute of Informatics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
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11
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Wang C, Yu S, Bao Q, Qiang W, Wu C, Zhang C, Jiang Y, Cai Y, Huang D, Chen Y, Hou C, Wang D. Circulating Mesencephalic Astrocyte-Derived Neurotrophic Factor Negatively Correlates With Atrial Apoptosis in Human Chronic Atrial Fibrillation. J Cardiovasc Pharmacol 2020; 75:141-7. [PMID: 31789884 DOI: 10.1097/FJC.0000000000000781] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Atrial apoptosis has been found to be majorly involved in the pathogenesis of human atrial fibrillation (AF). Mesencephalic astrocyte-derived neurotrophic factor exerts an antiapoptotic effect for multiple cell types. However, the correlation between MANF and atrial apoptosis in AF is still undefined. In this study, 59 patients with valvular or congenital heart disease were divided into 2 groups: AF group and sinus rhythm (SR) group. We found that the apoptotic atrial myocytes in the right atrial appendage tissues of the AF group were significantly more than those of the SR group, whereas mRNA and protein levels of MANF in the AF group were significantly down-regulated compared with those in the SR group. The serum MANF in patients with AF was markedly lower than that in patients with SR, which was inversely correlated with atrial apoptosis in patients with AF. In addition, the AF group had the greater inflammation and endoplasmic reticulum stress compared with the SR group. These findings suggest that MANF downregulation may lead to more atrial apoptosis in human chronic AF, indicating MANF as a potential therapeutic agent in AF treatment.
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12
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Li J, Zhang D, Brundel BJJM, Wiersma M. Imbalance of ER and Mitochondria Interactions: Prelude to Cardiac Ageing and Disease? Cells 2019; 8:cells8121617. [PMID: 31842269 PMCID: PMC6952992 DOI: 10.3390/cells8121617] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022] Open
Abstract
Cardiac disease is still the leading cause of morbidity and mortality worldwide, despite some exciting and innovative improvements in clinical management. In particular, atrial fibrillation (AF) and heart failure show a steep increase in incidence and healthcare costs due to the ageing population. Although research revealed novel insights in pathways driving cardiac disease, the exact underlying mechanisms have not been uncovered so far. Emerging evidence indicates that derailed proteostasis (i.e., the homeostasis of protein expression, function and clearance) is a central component driving cardiac disease. Within proteostasis derailment, key roles for endoplasmic reticulum (ER) and mitochondrial stress have been uncovered. Here, we describe the concept of ER and mitochondrial stress and the role of interactions between the ER and mitochondria, discuss how imbalance in the interactions fuels cardiac ageing and cardiac disease (including AF), and finally assess the potential of drugs directed at conserving the interaction as an innovative therapeutic target to improve cardiac function.
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Affiliation(s)
- Jin Li
- Correspondence: (J.L.); (M.W.)
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13
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Wang S, Zhang C, Li Y, Li P, Zhang D, Li C. Anti-liver cancer effect and the mechanism of arsenic sulfide in vitro and in vivo. Cancer Chemother Pharmacol 2018; 83:519-530. [PMID: 30542770 DOI: 10.1007/s00280-018-3755-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE This study aimed at investigating the anti-tumor effect of arsenic sulfide (As2S2) against liver cancer both in vivo and in vitro and to elucidate its underlying mechanisms. METHODS Cell viability of the human hepatocellular carcinoma cell lines SMMC-7721, BEL-7402, HepG2 were measured by CCK-8 assay. The effects of As2S2 on cell proliferation and apoptosis of SMMC-7721 cells were investigated using Calcein-AM and PI staining, Hoechst 33258 staining, crystal violet staining, and JC-1 staining. Cell cycle and Annexin V/PI assay were analyzed via flow cytometry. The expression of apoptosis-related proteins, phosphorylation of PI3K and AKT were detected by Western blotting. H22-bearing mice model was established to evaluate the anti-tumor effect of As2S2 in vivo. HE staining, PCNA was observed via immunohistochemistry, and TUNEL assay was used to assess the anti-proliferation and pro-apoptotic effects of As2S2. RESULTS As2S2 significantly inhibited the growth of human hepatoma cells SMMC-7721, BEL-7402 and HepG2. As2S2 inhibited cell proliferation effectively by inducing G0/G1 cell cycle arrest in SMMC-7721 cells. As2S2 could increase Bax/Bcl-2 ratio, decrease mitochondrial membrane potential, promote the release of cytochrome c, increase the levels of cleaved caspase-3 and PARP, indicating that As2S2 induced apoptosis in SMMC-7721 cells via mitochondrial-mediated apoptosis pathway. Further research showed that As2S2 inhibited the PI3K/AKT signaling pathway leading to apoptotic cell death. In addition, As2S2 significantly inhibited tumor growth in H22-bearing mice and induced apoptosis by deactivating PI3K/AKT pathway, which was consistent with the in vitro results. CONCLUSION These findings suggested that As2S2 could induce apoptosis of liver cancer cells in vitro and in vivo, which was related to PI3K/AKT-mediated mitochondrial pathway and may provide a novel promising therapeutic agent for liver cancer treatment.
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Affiliation(s)
- Shudan Wang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Chao Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yumei Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Ping Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Dafang Zhang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.
| | - Chaoying Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.
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14
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Freundt JK, Frommeyer G, Wötzel F, Huge A, Hoffmeier A, Martens S, Eckardt L, Lange PS. The Transcription Factor ATF4 Promotes Expression of Cell Stress Genes and Cardiomyocyte Death in a Cellular Model of Atrial Fibrillation. Biomed Res Int 2018; 2018:3694362. [PMID: 30003094 DOI: 10.1155/2018/3694362] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/29/2018] [Accepted: 04/15/2018] [Indexed: 12/19/2022]
Abstract
Introduction Cardiomyocyte remodelling in atrial fibrillation (AF) has been associated with both oxidative stress and endoplasmic reticulum (ER) stress and is accompanied by a complex transcriptional regulation. Here, we investigated the role the oxidative stress and ER stress responsive bZIP transcription factor ATF4 plays in atrial cardiomyocyte viability and AF induced gene expression. Methods HL-1 cardiomyocytes were subjected to rapid field stimulation. Forced expression of ATF4 was achieved by adenoviral gene transfer. Using global gene expression analysis and chromatin immunoprecipitation, ATF4 dependent transcriptional regulation was studied, and tissue specimen of AF patients was analysed by immunohistochemistry. Results Oxidative stress and ER stress caused a significant reduction in cardiomyocyte viability and were associated with an induction of ATF4. Accordingly, ATF4 was also induced by rapid field stimulation mimicking AF. Forced expression of wild type ATF4 promoted cardiomyocyte death. ATF4 was demonstrated to bind to the promoters of several cell stress genes and to induce the expression of a number of ATF4 dependent stress responsive genes. Moreover, immunohistochemical analyses showed that ATF4 is expressed in the nuclei of cardiomyocytes of tissue specimen obtained from AF patients. Conclusion ATF4 is expressed in human atrial cardiomyocytes and is induced in response to different types of cell stress. High rate electrical field stimulation seems to result in ATF4 induction, and forced expression of ATF4 reduces cardiomyocyte viability.
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15
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Cui C, Geng L, Shi J, Zhu Y, Yang G, Wang Z, Wang J, Chen M. Structural and electrophysiological dysfunctions due to increased endoplasmic reticulum stress in a long-term pacing model using human induced pluripotent stem cell-derived ventricular cardiomyocytes. Stem Cell Res Ther 2017; 8:109. [PMID: 28490375 PMCID: PMC5426064 DOI: 10.1186/s13287-017-0566-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/16/2017] [Accepted: 04/26/2017] [Indexed: 01/15/2023] Open
Abstract
Background Long-term ventricular pacing has deleterious effects and becomes more significant when cumulative percent ventricular pacing (Cum%VP) exceeds 40% of time. However, cellular disturbances and pathways by which pacing leads to myocardial disorders are not well understood. Attempts to resolve these questions have been hampered by difficulties in obtaining human cardiac tissue and the inability to build a longer-lasting (lasting longer than weeks) pacing model in vitro. Methods Human induced pluripotent stem cell-derived ventricular cardiomyocytes (VCMs) were cultured in the presence of electrical stimulation for 2 weeks. Quantitative structural and electrophysiological analyses were used to define the functional disturbances of pacing. Results Compared to controls, paced VCMs exhibited a remarkable reduction in the contractile protein expression, an increased apoptosis ratio and electrophysiological remodelling in a Cum%VP-dependent manner. Investigation of the protein expression levels revealed that long-term pacing universally activated both ER stress and downstream calpain. Moreover, the inhibition of calpain attenuated the adverse effects on the structural remodelling and increased the ICa, L in paced VCMs. Conclusions The results demonstrated that pacing VCMs for 2 weeks in vitro led to a series of structural and electrophysiological dysfunctions. The increased ER stress and downstream calpain could be a central mechanism underlying the disease pathogenesis. This finding could represent a new therapeutic target in the management of long-term pacing patients. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0566-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chang Cui
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Le Geng
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Jiaojiao Shi
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yue Zhu
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Gang Yang
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Zidun Wang
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Jiaxian Wang
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Minglong Chen
- Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
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Wang Y, Xuan L, Cui X, Wang Y, Chen S, Wei C, Zhao M. Ibutilide treatment protects against ER stress induced apoptosis by regulating calumenin expression in tunicamycin treated cardiomyocytes. PLoS One 2017; 12:e0173469. [PMID: 28399139 PMCID: PMC5388464 DOI: 10.1371/journal.pone.0173469] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 02/22/2017] [Indexed: 12/24/2022] Open
Abstract
Background Ibutilide, a class III antiarrhythmic agent has been shown to be cardioprotective in treating atrial fibrillation, promoting cardioconversion and recently this agent has been shown to protect against ER stress induced apoptosis in cardiomyocytes. In this study we begin to identify the mechanism by which ibutilide exerts its cardioprotection in tunicamycin treated cardiomyocytes. We examined ER stress markers including calumenin; a calcium binding ER chaperone protein that has recently been linked to ER stress in cardiomyocytes, in our treated cells. Methods To assess the effect of ibutilide we used the well characterized in vitro model of ER stress induced apoptosis in rat neonatal cardiomyocytes (RNC). RNC were treated with tunicamycin and the degree of ER stress was assessed by quantifying mRNA and protein levels of GRP78, GRP94 and calumenin, and examined the extent of apoptosis by assessing the protein levels of caspase-3/9/12, CHOP, ATF6, p-PERK, spliced XBP-1, the ratio of Bax/Bcl-2 and the percentage of deoxynucleotidyl-transferase- mediated dUTP nick end labeling (TUNEL) positive cells. Results We demonstrate ibutilide attenuated the up-regulation of ER stress markers GRP78 and GRP94 and rescued the decline in calumenin mRNA and protein levels in tunicamycin treated cardiomyocytes. The up-regulation of apoptotic markers caspase-3, CHOP, ATF6, p-PERK, spliced XBP-1, the ratio of Bax/Bcl-2 and the percentage of TUNEL positive cells were also attenuated after ibutilide treatment while the protein levels of Caspase-9 and Caspase-12 were unaffected. Conclusions This study suggests another cardioprotective effect of the antiarrhythmic agent ibutilide whereby pretreatment leads to the attenuation of ER stress induced apoptosis by regulating calumenin expression. This study provides further evidence for the role of calumenin in the cardiomyocyte ER stress response.
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Affiliation(s)
- Yu Wang
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China
- Inner Mongolia Provincial Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| | - Liying Xuan
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China
- Inner Mongolia Provincial Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| | - Xiaoxue Cui
- First Clinical Medical College of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China
| | - Yilin Wang
- First Clinical Medical College of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China
| | - Shaoqing Chen
- First Clinical Medical College of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China
| | - Chengxi Wei
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China
- Inner Mongolia Provincial Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
- * E-mail: (CXW); (MZ)
| | - Ming Zhao
- Inner Mongolia Provincial Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
- First Clinical Medical College of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China
- * E-mail: (CXW); (MZ)
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Ren Z, Chen S, Zhang J, Doshi U, Li AP, Guo L. Endoplasmic Reticulum Stress Induction and ERK1/2 Activation Contribute to Nefazodone-Induced Toxicity in Hepatic Cells. Toxicol Sci 2016; 154:368-380. [PMID: 27613715 DOI: 10.1093/toxsci/kfw173] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Nefazodone, an antagonist for the 5-hydroxytryptanine receptor, has been used for the treatment of depression. Acute liver injury has been documented to be associated with the use of nefazodone; however, the mechanisms of nefazodone-induced liver toxicity are not well defined. In this report, using biochemical and molecular analyses, we characterized the molecular mechanisms underlying the hepatotoxicity of nefazodone. We found that nefazodone induced endoplasmic reticulum (ER) stress in HepG2 cells, as the expression of typical ER stress markers, including CHOP, ATF-4, and p-eIF2α, was significantly increased, and splicing of XBP1 was observed. Nefazodone-suppressed protein secretion was evaluated using a Gaussia luciferase reporter assay that measures ER stress. The ER stress inhibitors (4-phenylbutyrate and salubrinal) and knockdown of ATF-4 gene attenuated nefazodone-induced ER stress and cytotoxicity. Nefazodone activated the MAPK signaling pathway, as indicated by increased phosphorylation of JNK, ERK1/2, and p38. Inhibition of ERK1/2 reduced ER stress caused by nefazodone. Taken together, our findings suggest that ER stress contributes to nefazodone-induced toxicity in HepG2 cells and that the MAPK signaling pathway plays an important role in ER stress.
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Affiliation(s)
- Zhen Ren
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. FDA, Jefferson, Arkansas
| | - Si Chen
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. FDA, Jefferson, Arkansas
| | - Jie Zhang
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. FDA, Jefferson, Arkansas
| | | | - Albert P Li
- In Vitro ADMET Laboratories LLC, Columbia, Maryland
| | - Lei Guo
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. FDA, Jefferson, Arkansas;
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18
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Park MJ, Oh KS, Nho JH, Kim GY, Kim DI. Asymmetric dimethylarginine (ADMA) treatment induces apoptosis in cultured rat mesangial cells via endoplasmic reticulum stress activation. Cell Biol Int 2016; 40:662-70. [PMID: 26992443 DOI: 10.1002/cbin.10602] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/14/2016] [Indexed: 12/31/2022]
Abstract
Asymmetric dimethylarginine (ADMA), a high risk factor for endothelial dysfunction and cardiovascular disease (CVD), has been reported to promote cellular dysfunction via endoplasmic reticulum (ER) stress activation in various cells. Additionally, increased serum ADMA levels have been observed in incipient kidney diseases. Previously, we reported that activated ER stress is associated with mesangial cell apoptosis, observed mainly in overt nephropathy or chronic kidney disease (CKD). However, the effect of ADMA on mesangial cell apoptosis is unknown. Thus, we investigated the effects of ADMA on mesangial cell apoptosis and ER stress signaling. ADMA treatment increased caspase-3 activity and activated three branches of ER stress signaling (PERK, IRE1, and ATF6) that induce mesangial cell apoptosis. Pharmacological inhibitors of ER stress (inhibitors of PERK, IRE1, and S1P) attenuated ADMA-induced cleavage of caspase-3 and induced a decrease in the mitochondrial membrane potential. Furthermore, these inhibitors diminished the number of apoptotic cells induced by ADMA treatment. Taken together, our results indicated that ADMA treatment induces mesangial cell apoptosis via ER stress signaling. These results suggest that ADMA-induced mesangial cell apoptosis could contribute to the progression of overt nephropathy and CKD.
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Affiliation(s)
- Min-Jung Park
- College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, Korea.,Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, 48109, USA.,Department of Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ki-Seok Oh
- College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, Korea
| | - Jong-Hyun Nho
- College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, Korea
| | - Gye-Yeop Kim
- Department of Physical Therapy, College of Health and Welfare, Dongshin University, Naju, 520-714, Korea
| | - Dong-Il Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, Korea.,Life Science Institute, University of Michigan, Ann Arbor, MI, 48109, USA
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Grossini E, Marotta P, Farruggio S, Sigaudo L, Qoqaiche F, Raina G, de Giuli V, Mary D, Vacca G, Pollastro F. Effects of Artemetin on Nitric Oxide Release and Protection against Peroxidative Injuries in Porcine Coronary Artery Endothelial Cells. Phytother Res 2015; 29:1339-1348. [PMID: 26032176 DOI: 10.1002/ptr.5386] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 04/15/2015] [Accepted: 05/12/2015] [Indexed: 12/27/2022]
Abstract
Artemetin is one of the main components of Achillea millefolium L. and Artemisia absinthium, which have long been used for the treatment of various diseases. To date, however, available information about protective effects of their extracts on the cardiovascular system is scarce. Therefore, we planned to analyze the effects of artemetin on nitric oxide (NO) release and the protection exerted against oxidation in porcine aortic endothelial (PAE) cells. In PAE, we examined the modulation of NO release caused by artemetin and the involvement of muscarinic receptors, β2-adrenoreceptors, estrogenic receptors (ER), protein-kinase A, phospholipase-C, endothelial-NO-synthase (eNOS), Akt, extracellular-signal-regulated kinases 1/2 (ERK1/2) and p38 mitogen activated protein kinase (p38 MAPK). Moreover, in cells treated with hydrogen peroxide, the effects of artemetin were examined on cell survival, glutathione (GSH) levels, apoptosis, mitochondrial membrane potential and transition pore opening. Artemetin increased eNOS-dependent NO production by the involvement of muscarinic receptors, β2-adrenoreceptors, ER and all the aforementioned kinases. Furthermore, artemetin improved cell viability in PAE that were subjected to peroxidation by counteracting GSH depletion and apoptosis and through the modulation of mitochondrial function. In conclusion, artemetin protected endothelial function by acting as antioxidant and antiapoptotic agent and through the activation of ERK1/2 and Akt. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Elena Grossini
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Patrizia Marotta
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Serena Farruggio
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Lorenzo Sigaudo
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Fatima Qoqaiche
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Giulia Raina
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Veronica de Giuli
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - David Mary
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Giovanni Vacca
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, University of Eastern Piedmont 'A. Avogadro', Via Solaroli 17, Azienda Ospedaliera Universitaria Maggiore della Carità, corso Mazzini 36, Novara, Italy
| | - Federica Pollastro
- Dept. Drug Sciences, University East Piedmont 'A. Avogadro', Largo Donegani 2, Novara, Italy
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