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Ge M, Hu J, Zhou Y, Tian Y, Liu Z, Yang H, Zhou Y, Qiu Q, Ye D. DNA damage induced PARP-1 overactivation confers paclitaxel-induced neuropathic pain by regulating mitochondrial oxidative metabolism. CNS Neurosci Ther 2024; 30:e70012. [PMID: 39215404 PMCID: PMC11364515 DOI: 10.1111/cns.70012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 07/27/2024] [Accepted: 08/12/2024] [Indexed: 09/04/2024] Open
Abstract
AIMS Poly (ADP-ribose) polymerase (PARP) has been extensively investigated in human cancers. Recent studies verified that current available PARP inhibitors (Olaparib or Veliparib) provided clinical palliation of clinical patients suffering from paclitaxel-induced neuropathic pain (PINP). However, the underlying mechanism of PARP overactivation in the development of PINP remains to be investigated. METHODS AND RESULTS We reported induction of DNA oxidative damage, PARP-1 overactivation, and subsequent nicotinamide adenine dinucleotide (NAD+) depletion as crucial events in the pathogenesis of PINP. Therefore, we developed an Olaparib PROTAC to achieve the efficient degradation of PARP. Continuous intrathecal injection of Olaparib PROTAC protected against PINP by inhibiting the activity of PARP-1 in rats. PARP-1, but not PARP-2, was shown to be a crucial enzyme in the development of PINP. Specific inhibition of PARP-1 enhanced mitochondrial redox metabolism partly by upregulating the expression and deacetylase activity of sirtuin-3 (SIRT3) in the dorsal root ganglions and spinal cord in the PINP rats. Moreover, an increase in the NAD+ level was found to be a crucial mechanism by which PARP-1 inhibition enhanced SIRT3 activity. CONCLUSION The findings provide a novel insight into the mechanism of DNA oxidative damage in the development of PINP and implicate PARP-1 as a possible therapeutic target for clinical PINP treatment.
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Affiliation(s)
- Meng‐meng Ge
- Department of Anesthesiology, Zhongshan HospitalFudan UniversityShanghaiChina
- Department of Anesthesiology and Pain Medicine, Tongji HospitalTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Jun‐jie Hu
- Cancer Center, Tongji HospitalTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Ya‐qun Zhou
- Department of Anesthesiology and Pain Medicine, Tongji HospitalTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Yu‐ke Tian
- Department of Anesthesiology and Pain Medicine, Tongji HospitalTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Zhi‐heng Liu
- Department of AnesthesiologyShenzhen Second People's Hospital/The First Affiliated Hospital of Shenzhen University, Health Science CenterShenzhenChina
| | - Hui Yang
- Department of Anesthesiology and Pain Medicine, Tongji HospitalTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Yi‐rong Zhou
- School of PharmacyTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Qiu Qiu
- Department of AnaesthesiologyQueen Mary Hospital, Hong Kong, Special Administrative RegionHong KongChina
| | - Da‐wei Ye
- Cancer Center, Tongji HospitalTongji Medical College, Huazhong University of Science and TechnologyWuhanChina
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Yang W, Lei X, Liu F, Sui X, Yang Y, Xiao Z, Cui Z, Sun Y, Yang J, Yang X, Lin X, Bao Z, Li W, Ma Y, Wang Y, Luo Y. Meldonium, as a potential neuroprotective agent, promotes neuronal survival by protecting mitochondria in cerebral ischemia-reperfusion injury. J Transl Med 2024; 22:771. [PMID: 39148053 PMCID: PMC11325598 DOI: 10.1186/s12967-024-05222-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/19/2024] [Indexed: 08/17/2024] Open
Abstract
BACKGROUND Stroke is a globally dangerous disease capable of causing irreversible neuronal damage with limited therapeutic options. Meldonium, an inhibitor of carnitine-dependent metabolism, is considered an anti-ischemic drug. However, the mechanisms through which meldonium improves ischemic injury and its potential to protect neurons remain largely unknown. METHODS A rat model with middle cerebral artery occlusion (MCAO) was used to investigate meldonium's neuroprotective efficacy in vivo. Infarct volume, neurological deficit score, histopathology, neuronal apoptosis, motor function, morphological alteration and antioxidant capacity were explored via 2,3,5-Triphenyltetrazolium chloride staining, Longa scoring method, hematoxylin and eosin staining, terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay, rotarod test, transmission electron microscopy and Oxidative stress index related kit. A primary rat hippocampal neuron model subjected to oxygen-glucose deprivation reperfusion was used to study meldonium's protective ability in vitro. Neuronal viability, mitochondrial membrane potential, mitochondrial morphology, respiratory function, ATP production, and its potential mechanism were assayed by MTT cell proliferation and cytotoxicity assay kit, cell-permeant MitoTracker® probes, mitochondrial stress, real-time ATP rate and western blotting. RESULTS Meldonium markedly reduced the infarct size, improved neurological function and motor ability, and inhibited neuronal apoptosis in vivo. Meldonium enhanced the morphology, antioxidant capacity, and ATP production of mitochondria and inhibited the opening of the mitochondrial permeability transition pore in the cerebral cortex and hippocampus during cerebral ischemia-reperfusion injury (CIRI) in rats. Additionally, meldonium improved the damaged fusion process and respiratory function of neuronal mitochondria in vitro. Further investigation revealed that meldonium activated the Akt/GSK-3β signaling pathway to inhibit mitochondria-dependent neuronal apoptosis. CONCLUSION Our study demonstrated that meldonium shows a neuroprotective function during CIRI by preserving the mitochondrial function, thus prevented neurons from apoptosis.
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Affiliation(s)
- Weijie Yang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xiuxing Lei
- Lu'An Hospital of Traditional Chinese Medicine, Anhui, China
| | - Fengying Liu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xin Sui
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yi Yang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Zhenyu Xiao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Ziqi Cui
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yangyang Sun
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Jun Yang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xinyi Yang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xueyang Lin
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Zhenghao Bao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Weidong Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yingkai Ma
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yongan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China.
| | - Yuan Luo
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China.
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3
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Wang Y, Zhu Y, Cui H, Deng H, Zuo Z, Fang J, Guo H. Effects of CuSO 4 on hepatic mitochondrial function, biogenesis and dynamics in mice. ENVIRONMENTAL TOXICOLOGY 2024; 39:2208-2217. [PMID: 38124272 DOI: 10.1002/tox.24085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/10/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023]
Abstract
Copper is an essential trace element for animal. Excessive intake of copper will cause a large accumulation of copper in the body, especially in the liver, and induce hepatotoxicity, however, there are few studies on the effects of copper on hepatic mitochondrial biogenesis and mitochondrial dynamics. In this study, mice were treated with different doses of CuSO4 (0, 10, 20, and 40 mg/kg) for 21 and 42 days by gavage. The results verified that CuSO4 decreased the content of mitochondrial respiratory chain complexes I-IV in mouse liver. CuSO4 treatment resulted the decrease in the protein and mRNA expression levels of PGC-1α, TFAM, and NRF1, which were the mitochondrial biogenesis regulator proteins. Meanwhile, the proteins involved in mitochondrial fusion were reduced by CuSO4 , such as Mfn1 and Mfn2, however, mitochondrial fission proteins Drip1 and Fis1 were significantly increased. Abovementioned results show that CuSO4 could induce mitochondria damage in the liver of mice, and mitochondrial biogenesis and mitochondrial dynamics are involved in the molecular mechanism of CuSO4 -induced hepatotoxicity.
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Affiliation(s)
- Yihan Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yanqiu Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Chengdu, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Chengdu, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Chengdu, China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Chengdu, China
| | - Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Chengdu, China
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Xu T, Wang J, Liu X, Xiang R, Li H, Wang S, Yang J, Xu M. FAM3A Deficiency - Induced Mitochondrial Dysfunction Underlies Post-Infarct Mortality and Heart Failure. J Cardiovasc Transl Res 2024; 17:104-120. [PMID: 37014466 DOI: 10.1007/s12265-023-10382-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/20/2023] [Indexed: 04/05/2023]
Abstract
Mitochondrial protein sequence similarity 3 gene family member A (FAM3A) plays important roles in the electron transfer chain, while its functions in the heart are still unknown. This study aims to explore the roles and mechanisms of FAM3A after myocardial infarction (MI). FAM3A-deficient (Fam3a-/-) mice were implemented with MI injury and showed lower survival rates at 4 weeks as well as decreased cardiac systolic function. Isolated cardiomyocytes of Fam3a-/- mice showed reduced basal, ATP-linked respiration and respiratory reserve compared to that of wild-type mice. Transmission electron microscopy studies showed Fam3a-/- mice had a larger size and elevated density of mitochondria. FAM3A deficiency also induced elevated mitochondrial Ca2+, higher opening level of mPTP, lower mitochondrial membrane potential and elevated apoptotic rates. Further analyses demonstrated that mitochondrial dynamics protein Opa1 contributed to the effects of FAM3A in cardiomyocytes. Our study discloses the important roles of mitochondrial protein FAM3A in the heart.
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Affiliation(s)
- Tan Xu
- Department of Cardiology, Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Jiaxing Wang
- Department of Cardiology, Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Xiaoxiao Liu
- State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing, China
| | - Rui Xiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Sciences of the Ministry of Education, Center for Non-Coding RNA Medicine, Peking University Health Science Center, Beijing, 100191, China
| | - Houhua Li
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, China
| | - Shiqiang Wang
- State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing, China
| | - Jichun Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Sciences of the Ministry of Education, Center for Non-Coding RNA Medicine, Peking University Health Science Center, Beijing, 100191, China.
| | - Ming Xu
- Department of Cardiology, Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China.
- Research Unit of Medical Science Research Management/Basic and Clinical Research of Metabolic Cardiovascular Diseases, Chinese Academy of Medical Sciences, Beijing, China.
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5
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Song J, Li S, Zhang B, Wu J, Zhong A. Quercetin protects human coronary artery endothelial cells against hypoxia/reoxygenation-induced mitochondrial apoptosis via the Nrf2/HO-1 axis. Biomed Res 2024; 45:197-207. [PMID: 39370298 DOI: 10.2220/biomedres.45.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2024]
Abstract
Our study explored the therapeutic effect and the mechanism of quercetin against hypoxia/reoxygenation (H/R)-induced injury in human coronary artery endothelial cells (CAECs). Quercetin was selected as a potential component for the BuShenKangShuaiPian formula (BSKSP) treatment via the Network pharmacology analysis. Cell viability and reactive oxygen species (ROS) production were measured by CCK8 assay and immunofluorescence, respectively. The expression of Bax, Bcl-2, Cle-caspase-3, cytochrome c (Cyt-C), NF-E2-related factor 2 (Nrf2), and heme oxygenase-1 (HO-1) protein was quantified by western blotting. The superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA) activity, mtDNA copy number, and ATP production were measured via corresponding kits. Quercetin was selected from the BSKSP for its high degree value (Degree value: 22). Besides, quercetin protected CAECs against H/R-induced cytotoxicity and apoptosis. The H/R-induced increased ROS level, ATP production, Cyt-C release, and decreased mtDNA copy number were removed by the quercetin. Moreover, quercetin upregulated the Nrf2/ HO-1 axis, SOD, and CAT activity, and downregulated MDA levels in H/R treated CAECs, while knockdown Nrf2 reversed the protection of quercetin against H/R-induced oxidative stress, mitochondrial damage, and apoptosis. Quercetin protects CAECs against H/R-induced mitochondrial apoptosis via the Nrf2/HO-1 axis, which innovatively suggests the therapeutic potential of quercetin for coronary heart disease (CHD) treatment.
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Affiliation(s)
- Jiejin Song
- Department of Pharmacy, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Shuang Li
- National Health Commission's Key Laboratory for Critical Care Medicine, Tianjin First Central Hospital, Tianjin, China
| | - Boyong Zhang
- Department of Pharmacy, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Jiao Wu
- Department of Pharmacy, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Aiqin Zhong
- North Hospital Emergency Department, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxi- bustion, Tianjin, China
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6
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Shirzad H, Mousavinezhad SA, Panji M, Ala M. Amlodipine alleviates renal ischemia/reperfusion injury in rats through Nrf2/Sestrin2/PGC-1α/TFAM Pathway. BMC Pharmacol Toxicol 2023; 24:82. [PMID: 38129888 PMCID: PMC10740300 DOI: 10.1186/s40360-023-00722-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Previously, observational studies showed that amlodipine can mitigate calcineurin inhibitor- and contrast-induced acute kidney injury (AKI). Herein, we aimed to measure the effect of amlodipine on renal ischemia/reperfusion (I/R) injury and find the underlying mechanisms. MATERIALS AND METHODS Bilateral renal I/R was induced by clamping the hilum of both kidneys for 30 min. The first dose of amlodipine 10 mg/kg was gavaged before anesthesia. The second dose of amlodipine was administered 24 h after the first dose. Forty-eight hours after I/R, rats were anesthetized, and their blood and tissue specimens were collected. RESULTS Amlodipine significantly decreased the elevated serum levels of creatinine and blood urea nitrogen (BUN) and mitigated tissue damage in hematoxylin & eosin (H&E) staining. Amlodipine strongly reduced the tissue levels of malondialdehyde (MDA), interleukin 1β (IL1β), and tumor necrosis factor α (TNF-α). Amlodipine enhanced antioxidant defense by upregulating nuclear factor erythroid 2-related factor 2 (Nrf2) and Sestrin2. Furthermore, amlodipine significantly improved mitochondrial biogenesis by promoting Sestrin2/peroxisome proliferator-activated receptor-gamma coactivator (PGC-1α)/mitochondrial transcription factor A (TFAM) pathway. It also enhanced autophagy and attenuated apoptosis, evidenced by increased LC3-II/LC3-I and bcl2/bax ratios after renal I/R. CONCLUSION These findings suggest that amlodipine protects against renal I/R through Nrf2/Sestrin2/PGC-1α/TFAM Pathway.
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Affiliation(s)
- Hadi Shirzad
- Research Center for Life, Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarters, Tehran, Iran
| | - Seyed Amin Mousavinezhad
- Research Center for Life, Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarters, Tehran, Iran
| | - Mohammad Panji
- Research Center for Life, Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarters, Tehran, Iran
| | - Moin Ala
- Research Center for Life, Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarters, Tehran, Iran.
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Ibrahim AA, Abdel Mageed SS, Safar MM, El-Yamany MF, Oraby MA. MitoQ alleviates hippocampal damage after cerebral ischemia: The potential role of SIRT6 in regulating mitochondrial dysfunction and neuroinflammation. Life Sci 2023; 328:121895. [PMID: 37385372 DOI: 10.1016/j.lfs.2023.121895] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 07/01/2023]
Abstract
AIMS Mitochondrial perturbations are the major culprit of the inflammatory response during the initial phase of cerebral ischemia. The present study explored the neuroprotective effect of the mitochondrial-targeted antioxidant, Mitoquinol (MitoQ), against hippocampal neuronal loss in an experimental model of brain ischemia/reperfusion (I/R) injury. MAIN METHODS Rats were subjected to common carotid artery occlusion for 45 min, followed by reperfusion for 24 h. MitoQ (2 mg/kg; i.p daily) was administered for 7 successive days prior to the induction of brain ischemia. KEY FINDINGS I/R rats exhibited hippocampal damage evidenced by aggravated mitochondrial oxidative stress, thereby enhancing mtROS and oxidized mtDNA, together with inhibiting mtGSH. Mitochondrial biogenesis and function were also affected, as reflected by the reduction of PGC-1α, TFAM, and NRF-1 levels, as well as loss of mitochondrial membrane potential (△Ψm (. These changes were associated with neuroinflammation, apoptosis, impairment of cognitive function as well as hippocampal neurodegenerative changes in histopathological examination. Notably, SIRT6 was suppressed. Pretreatment with MitoQ markedly potentiated SIRT6, modulated mitochondrial oxidative status and restored mitochondrial biogenesis and function. In addition, MitoQ alleviated the inflammatory mediators, TNF-α, IL-18, and IL-1β and dampened GFAB immunoexpression along with downregulation of cleaved caspase-3 expression. Reversal of hippocampal function by MitoQ was accompanied by improved cognitive function and hippocampal morphological aberrations. SIGNIFICANCE This study suggests that MitoQ preserved rats' hippocampi from I/R insults via maintenance of mitochondrial redox status, biogenesis, and activity along with mitigation of neuroinflammation and apoptosis, thereby regulating SIRT6.
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Affiliation(s)
- Ayman A Ibrahim
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Sherif S Abdel Mageed
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt.
| | - Marwa M Safar
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Mohammed F El-Yamany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Mamdouh A Oraby
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Badr University in Cairo, 11829 Cairo, Egypt.
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8
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Wei XY, Zeng YF, Guo QH, Liu JJ, Yin N, Liu Y, Zeng WJ. Cardioprotective effect of epigallocatechin gallate in myocardial ischemia/reperfusion injury and myocardial infarction: a meta-analysis in preclinical animal studies. Sci Rep 2023; 13:14050. [PMID: 37640837 PMCID: PMC10462709 DOI: 10.1038/s41598-023-41275-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/24/2023] [Indexed: 08/31/2023] Open
Abstract
This meta-analysis aims to determine the efficacy of Epigallocatechin gallate (EGCG) in the treatment of myocardial ischemia-reperfusion injury (MIRI) and summarize the mechanisms involved. Literature from six databases including Web of Science, PubMed, Embase, China National Knowledge Infrastructure (CNKI), Wan-Fang database, and VIP database (VIP) were systematically searched. All the analysis were conducted by R. Twenty-five eligible studies involving 443 animals were included in this meta-analysis. The results indicated that compared to controls, EGCG exerts a cardioprotective effect by reducing myocardial infarct size (SMD = -4.06; 95% CI: -5.17, -2.94; P < 0.01; I2 = 77%). The funnel plot revealed publication bias. Moreover, EGCG significantly improves cardiac function, serum myocardial injury enzyme, and oxidative stress levels in MIRI animal models. This meta-analysis demonstrates that EGCG exhibits therapeutic promise in animal models of MIRI. However, further validation is still needed in large animal models and large clinical studies.
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Affiliation(s)
- Xin-Yu Wei
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yi-Fan Zeng
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qi-Hao Guo
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Pharmacy, Shengjing Hospital, China Medical University, Shenyang, China
| | - Ji-Jia Liu
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ni Yin
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yan Liu
- Department of Pharmacy, Hunan Aerospace Hospital, Hunan Normal University, Changsha, Hunan, China
| | - Wen-Jing Zeng
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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9
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Mongelli A, Mengozzi A, Geiger M, Gorica E, Mohammed SA, Paneni F, Ruschitzka F, Costantino S. Mitochondrial epigenetics in aging and cardiovascular diseases. Front Cardiovasc Med 2023; 10:1204483. [PMID: 37522089 PMCID: PMC10382027 DOI: 10.3389/fcvm.2023.1204483] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/29/2023] [Indexed: 08/01/2023] Open
Abstract
Mitochondria are cellular organelles which generate adenosine triphosphate (ATP) molecules for the maintenance of cellular energy through the oxidative phosphorylation. They also regulate a variety of cellular processes including apoptosis and metabolism. Of interest, the inner part of mitochondria-the mitochondrial matrix-contains a circular molecule of DNA (mtDNA) characterised by its own transcriptional machinery. As with genomic DNA, mtDNA may also undergo nucleotide mutations that have been shown to be responsible for mitochondrial dysfunction. During physiological aging, the mitochondrial membrane potential declines and associates with enhanced mitophagy to avoid the accumulation of damaged organelles. Moreover, if the dysfunctional mitochondria are not properly cleared, this could lead to cellular dysfunction and subsequent development of several comorbidities such as cardiovascular diseases (CVDs), diabetes, respiratory and cardiovascular diseases as well as inflammatory disorders and psychiatric diseases. As reported for genomic DNA, mtDNA is also amenable to chemical modifications, namely DNA methylation. Changes in mtDNA methylation have shown to be associated with altered transcriptional programs and mitochondrial dysfunction during aging. In addition, other epigenetic signals have been observed in mitochondria, in particular the interaction between mtDNA methylation and non-coding RNAs. Mitoepigenetic modifications are also involved in the pathogenesis of CVDs where oxygen chain disruption, mitochondrial fission, and ROS formation alter cardiac energy metabolism leading to hypertrophy, hypertension, heart failure and ischemia/reperfusion injury. In the present review, we summarize current evidence on the growing importance of epigenetic changes as modulator of mitochondrial function in aging. A better understanding of the mitochondrial epigenetic landscape may pave the way for personalized therapies to prevent age-related diseases.
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Affiliation(s)
- Alessia Mongelli
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Alessandro Mengozzi
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Martin Geiger
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Era Gorica
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Shafeeq Ahmed Mohammed
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Francesco Paneni
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Frank Ruschitzka
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Sarah Costantino
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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10
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Silva BR, Silva JRV. Mechanisms of action of non-enzymatic antioxidants to control oxidative stress during in vitro follicle growth, oocyte maturation, and embryo development. Anim Reprod Sci 2023; 249:107186. [PMID: 36638648 DOI: 10.1016/j.anireprosci.2022.107186] [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: 03/01/2022] [Revised: 11/25/2022] [Accepted: 12/28/2022] [Indexed: 01/01/2023]
Abstract
In vitro follicle growth and oocyte maturation still has a series of limitations, since not all oocytes matured in vitro have the potential to develop in viable embryos. One of the factors associated with low oocyte quality is the generation of reactive oxygen species (ROS) during in vitro culture. Therefore, this review aims to discuss the role of non-enzymatic antioxidants in the control of oxidative stress during in vitro follicular growth, oocyte maturation and embryonic development. A wide variety of non-enzymatic antioxidants (melatonin, resveratrol, L-ascorbic acid, L-carnitine, N-acetyl-cysteine, cysteamine, quercetin, nobiletin, lycopene, acteoside, mogroside V, phycocyanin and laminarin) have been used to supplement culture media. Some of them, like N-acetyl-cysteine, cysteamine, nobiletin and quercetin act by increasing the levels of glutathione (GSH), while melatonin and resveratrol increase the expression of antioxidant enzymes and minimize oocyte oxidative stress. L-ascorbic acid reduces free radicals and reactive oxygen species. Lycopene positively regulates the expression of many antioxidant genes. Additionally, L-carnitine protects DNA against ROS-induced damage, while acteoside and laminarin reduces the expression of proapoptotic genes. Mogrosides increases mitochondrial function and reduces intracellular ROS levels, phycocyanin reduces lipid peroxidation, and lycopene neutralizes the adverse effects of ROS. Thus, it is very important to know their mechanisms of actions, because the combination of two or more antioxidants with different activities has great potential to improve in vitro culture systems.
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Affiliation(s)
- Bianca R Silva
- Laboratory of Physiology and Biotechnology of Reproduction, Federal University of Ceara, Sobral, CE, Brazil
| | - José R V Silva
- Laboratory of Physiology and Biotechnology of Reproduction, Federal University of Ceara, Sobral, CE, Brazil.
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Effects of Lycopene Attenuating Injuries in Ischemia and Reperfusion. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9309327. [PMID: 36246396 PMCID: PMC9568330 DOI: 10.1155/2022/9309327] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/25/2022] [Accepted: 09/15/2022] [Indexed: 11/18/2022]
Abstract
Tissue and organ ischemia can lead to cell trauma, tissue necrosis, irreversible damage, and death. While intended to reverse ischemia, reperfusion can further aggravate an ischemic injury (ischemia-reperfusion injury, I/R injury) through a range of pathologic processes. An I/R injury to one organ can also harm other organs, leading to systemic multiorgan failure. A type of carotenoid, lycopene, has been shown to treat and prevent many diseases (e.g., rheumatoid arthritis, cancer, diabetes, osteoporosis, male infertility, neurodegenerative diseases, and cardiovascular disease), making it a hot research topic in health care. Some recent researches have suggested that lycopene can evidently ameliorate ischemic and I/R injuries to many organs, but few clinical studies are available. Therefore, it is essential to review the effects of lycopene on ischemic and I/R injuries to different organs, which may help further research into its potential clinical applications.
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Chen B, Zhang W, Lin C, Zhang L. A Comprehensive Review on Beneficial Effects of Catechins on Secondary Mitochondrial Diseases. Int J Mol Sci 2022; 23:ijms231911569. [PMID: 36232871 PMCID: PMC9569714 DOI: 10.3390/ijms231911569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/13/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
Mitochondria are the main sites for oxidative phosphorylation and synthesis of adenosine triphosphate in cells, and are known as cellular power factories. The phrase "secondary mitochondrial diseases" essentially refers to any abnormal mitochondrial function other than primary mitochondrial diseases, i.e., the process caused by the genes encoding the electron transport chain (ETC) proteins directly or impacting the production of the machinery needed for ETC. Mitochondrial diseases can cause adenosine triphosphate (ATP) synthesis disorder, an increase in oxygen free radicals, and intracellular redox imbalance. It can also induce apoptosis and, eventually, multi-system damage, which leads to neurodegenerative disease. The catechin compounds rich in tea have attracted much attention due to their effective antioxidant activity. Catechins, especially acetylated catechins such as epicatechin gallate (ECG) and epigallocatechin gallate (EGCG), are able to protect mitochondria from reactive oxygen species. This review focuses on the role of catechins in regulating cell homeostasis, in which catechins act as a free radical scavenger and metal ion chelator, their protective mechanism on mitochondria, and the protective effect of catechins on mitochondrial deoxyribonucleic acid (DNA). This review highlights catechins and their effects on mitochondrial functional metabolic networks: regulating mitochondrial function and biogenesis, improving insulin resistance, regulating intracellular calcium homeostasis, and regulating epigenetic processes. Finally, the indirect beneficial effects of catechins on mitochondrial diseases are also illustrated by the warburg and the apoptosis effect. Some possible mechanisms are shown graphically. In addition, the bioavailability of catechins and peracetylated-catechins, free radical scavenging activity, mitochondrial activation ability of the high-molecular-weight polyphenol, and the mitochondrial activation factor were also discussed.
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Mitophagy: A Potential Target for Pressure Overload-Induced Cardiac Remodelling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2849985. [PMID: 36204518 PMCID: PMC9532135 DOI: 10.1155/2022/2849985] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 07/16/2022] [Accepted: 08/11/2022] [Indexed: 11/18/2022]
Abstract
The pathological mechanisms underlying cardiac remodelling and cardiac dysfunction caused by pressure overload are poorly understood. Mitochondrial damage and functional dysfunction, including mitochondrial bioenergetic disorder, oxidative stress, and mtDNA damage, contribute to heart injury caused by pressure overload. Mitophagy, an important regulator of mitochondrial homeostasis and function, is triggered by mitochondrial damage and participates in the pathological process of cardiovascular diseases. Recent studies indicate that mitophagy plays a critical role in the pressure overload model, but evidence on the causal relationship between mitophagy abnormality and pressure overload-induced heart injury is inconclusive. This review summarises the mechanism, role, and regulation of mitophagy in the pressure overload model. It also pays special attention to active compounds that may regulate mitophagy in pressure overload, which provide clues for possible clinical applications.
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Yue R, Lv M, Lan M, Zheng Z, Tan X, Zhao X, Zhang Y, Pu J, Xu L, Hu H. Irisin protects cardiomyocytes against hypoxia/reoxygenation injury via attenuating AMPK mediated endoplasmic reticulum stress. Sci Rep 2022; 12:7415. [PMID: 35523819 PMCID: PMC9076689 DOI: 10.1038/s41598-022-11343-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 04/19/2022] [Indexed: 11/09/2022] Open
Abstract
Endoplasmic reticulum (ER) stress plays a central role in myocardial ischemia/reperfusion (I/R) injury. Irisin has been reported to have protective properties in ischemia disease. In this study, we aimed at investigating whether irisin could alleviate myocardial I/R injury by ER stress attenuation. The in vitro model of hypoxia/reoxygenation (H/R) was established, which resembles I/R in vivo. Cell viability and apoptosis were estimated. Expressions of cleaved caspase-3, cytochrome c, GRP78, pAMPK, CHOP, and eIF2α were assessed by western blot. Our results revealed that pre-treatment with irisin significantly decreased cytochrome c release from mitochondria and caspase-3 activation caused by H/R. Irsin also reduced apoptosis and increased cell viability. These effects were abolished by AMPK inhibitor compound C pre-treatment. Also, GRP78 and CHOP expressions were up-regulated in the H/R group compared to the control group; however, irisin attenuated their expression. The pAMPK level was significantly decreased compared to the control, and this effect could be partly reversed by metformin pre-treatment. These results suggest that ER stress is associated with cell viability decreasing and cardiomyocytes apoptosis induced by H/R. Irisin could efficiently protect cardiomyocytes from H/R-injury via attenuating ER stress and ER stress-induced apoptosis.
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Affiliation(s)
- Rongchuan Yue
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China.,Academician Workstation, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, Sichuan, People's Republic of China.,Cardiovascular Research Center, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, People's Republic of China
| | - Mingming Lv
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China
| | - Meide Lan
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China
| | - Zaiyong Zheng
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China
| | - Xin Tan
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China
| | - Xuemei Zhao
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China
| | - Yulong Zhang
- Anesthesiology Department, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, People's Republic of China
| | - Jun Pu
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China
| | - Lei Xu
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China. .,Department of Cardiology, Central Hospital of Guangyuan, No. 16, Jing Alley, Lizhou District, Guangyuan, 628000, Sichuan, People's Republic of China.
| | - Houxiang Hu
- Department of Cardiology, Affiliated Hospital of North Sichuan Medical College, No. 63, Wenhua Road, Shunqing District, Nanchong, 637000, Sichuan, People's Republic of China. .,Academician Workstation, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, Sichuan, People's Republic of China.
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Zhu SY, Guo JY, Li JY, Dai XY, Li XN, Li JL. Lycopene ameliorates atrazine-induced pyroptosis in spleen by suppressing the Ox-mtDNA/Nlrp3 inflammasome pathway. Food Funct 2022; 13:3551-3560. [PMID: 35260874 DOI: 10.1039/d1fo02857j] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nlrp3 is a vital integration point of diverse extracellular stimuli and cellular stress. However, the inappropriate activation of Nlrp3 results in the progression of autoinflammatory and metabolic disorders. Atrazine, which is used widely in the agricultural sector, is toxic to humans. Herein, this study found that atrazine could induce oxidative stress and the expression of Nfkb and IRF1 in spleen, promoting the ox-mtDNA formation. Also, production and release of ox-mtDNA stimulated the Nlrp3 inflammasome. Lastly, atrazine induced pyroptosis in spleen, mediating the activation of Nlrp3 inflammasome. In addition, lycopene, a kind of carotenoid, is natural bioactive component in fruits and vegetables, which is applied toward reducing oxidative stress. It was found that lycopene could ameliorate the pyroptosis induced by atrazine via the inhibition of ox-mtDNA production. The results also provided evidence that lycopene had a potential role in the prevention of Nlrp3 inflammasome activation by depleting the ox-mtDNA.
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Affiliation(s)
- Shi-Yong Zhu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
| | - Jian-Ying Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
| | - Jin-Yang Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
| | - Xue-Yan Dai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
| | - Xue-Nan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China. .,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.,Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, P. R. China
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Mitochondrial Quality and Quantity Control: Mitophagy Is a Potential Therapeutic Target for Ischemic Stroke. Mol Neurobiol 2022; 59:3110-3123. [PMID: 35266113 DOI: 10.1007/s12035-022-02795-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/05/2022] [Indexed: 02/07/2023]
Abstract
Ischemic stroke is a cerebrovascular disease with high mortality and disability, which seriously affects the health and lives of people around the world. Effective treatment for ischemic stroke has been limited by its complex pathological mechanisms. Increasing evidence has indicated that mitochondrial dysfunction plays an essential role in the occurrence, development, and pathological processes of ischemic stroke. Therefore, strict control of the quality and quantity of mitochondria via mitochondrial fission and fusion as well as mitophagy is beneficial to the survival and normal function maintenance of neurons. Under certain circumstances, excessive mitophagy also could induce cell death. This review discusses the dynamic changes and double-edged roles of mitochondria and related signaling pathways of mitophagy in the pathophysiology of ischemic stroke. Furthermore, we focus on the possibility of modulating mitophagy as a potential therapy for the prevention and prognosis of ischemic stroke. Notably, we reviewed recent advances in the studies of natural compounds, which could modulate mitophagy and exhibit neuroprotective effects, and discussed their potential application in the treatment of ischemic stroke.
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Zhao Y, Li HX, Luo Y, Cui JG, Talukder M, Li JL. Lycopene mitigates DEHP-induced hepatic mitochondrial quality control disorder via regulating SIRT1/PINK1/mitophagy axis and mitochondrial unfolded protein response. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118390. [PMID: 34699919 DOI: 10.1016/j.envpol.2021.118390] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/25/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Di (2-ethylhexyl) phthalate (DEHP) is a hazardous chemical which is used as a plasticizer in the plastic products. Lycopene (LYC) is a carotenoid that has protective roles against cellular damage in different organs. The present study sought to explore the role of the interaction between mitophagy and mitochondrial unfolded protein response (UPRmt) in the LYC mitigating DEHP-induced hepatic mitochondrial quality control disorder. The mice were treated with LYC (5 mg/kg) and/or DEHP (500 or 1000 mg/kg). In our findings, LYC prevented DEHP-induced histopathological alterations including steatosis and fibrosis, and ultrastructural injuries including decreased mitochondrial membrane potential (ΔΨm) and mitochondria volume density. Furthermore, LYC alleviated DEHP-induced mitochondrial biogenesis disorder by suppressing SIRT1-PGC-1α axis, PINK1-mediated mitophagy and the activation of mitochondrial unfolded protein response (UPRmt). This research suggested that LYC could prevent DEHP-induced hepatic mitochondrial quality control disorder via regulating SIRT1/PINK1/mitophagy axis and UPRmt. The present study provided a current understanding about the potential implication of the SIRT1/PINK1/mitophagy axis and UPRmt in LYC preventing DEHP-induced hepatic mitochondrial quality control disorder.
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Affiliation(s)
- Yi Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Hui-Xin Li
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150086, PR China
| | - Yu Luo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; People's Government of Nierhe Township of Suiling County, Suihua, 152236, PR China
| | - Jia-Gen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Milton Talukder
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Department of Physiology and Pharmacology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal, 8210, Bangladesh
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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The dynamin-related protein 1 is decreased and the mitochondrial network is altered in Friedreich's ataxia cardiomyopathy. Int J Biochem Cell Biol 2021; 143:106137. [PMID: 34923139 DOI: 10.1016/j.biocel.2021.106137] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 11/20/2022]
Abstract
Friedreich ataxia is an autosomal recessive congenital neurodegenerative disease caused by a deficiency in the frataxin protein and is often diagnosed in young adulthood. An expansion of guanine-adenine-adenine repeats in the first intron of the FXN gene leads to decreased frataxin expression. Frataxin plays an essential role in mitochondrial metabolism. Most Friedreich ataxia patients are diagnosed with left ventricular hypertrophic cardiomyopathy, and 60% of patients die with hypertrophic cardiomyopathy. However, the mitochondrial anatomy in Friedreich ataxia hypertrophic cardiomyopathy is still poorly understood. We investigated mitochondrial fission, fusion, and function using biochemical, microscopy, and computational stochastic analysis in human induced pluripotent stem cell derived cardiomyocytes from a patient with Friedreich ataxia hypertrophic cardiomyopathy and a healthy individual. We found a significantly higher mitochondrial footprint, decreased mitochondrial fission protein dynamin-related protein, and mitochondrial fission rate over fusion with more giant mitochondrial clusters in human induced pluripotent stem cell derived cardiomyocytes from a patient with Friedreich ataxia hypertrophic cardiomyopathy, compared to an unaffected individual. We also found significantly depolarized mitochondrial membrane potential and higher reactive oxygen species levels in Friedreich ataxia human induced pluripotent stem cell cardiomyocytes. Our results show that frataxin's depletion may dampen the mitochondrial fission machinery by reducing dynamin-related protein1. The loss of mitochondrial fission might lead to elevated reactive oxygen species and depolarized mitochondrial membrane potential, which may cause oxidative damage in Friedreich ataxia hypertrophic cardiomyopathy. Further investigations are needed to identify the mechanism of downregulating dynamin-related protein1 due to the frataxin deficiency in Friedreich ataxia hypertrophic cardiomyopathy.
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Luo R, Wang L, Ye F, Wang YR, Fang W, Zhang MR, Wang F. [ 18F]FEDAC translocator protein positron emission tomography-computed tomography for early detection of mitochondrial dysfunction secondary to myocardial ischemia. Ann Nucl Med 2021; 35:927-936. [PMID: 34081287 PMCID: PMC8285353 DOI: 10.1007/s12149-021-01630-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND This study aimed to evaluate the biodistribution and kinetics of [18F]FEDAC targeting the translocator protein TSPO in the myocardium, and to explore its use for the identification of mitochondrial dysfunction. We also assessed the feasibility of [18F]FEDAC for the early detection of mitochondrial dysfunction associated with myocardial ischemia (MI). METHODS The radiochemical purity and stability of [18F]FEDAC were analyzed by radio-high-performance liquid chromatography (radio-HPLC). Its biodistribution and kinetics were evaluated by dissection and dynamic imaging using micro-positron emission tomography-computed tomography (micro-PET-CT) in healthy mice. [18F]FEDAC was also applied in an MI rat model and in sham-operated controls. Mitochondrial changes were observed by immunohistochemical staining and electron microscopy. RESULTS Radioactivity levels (%ID/g) in the myocardium in normal mice, determined by [18F]FEDAC, were 8.32 ± 0.80 at 5 min and 2.40 ± 0.10 at 60 min. PET showed significantly decreased uptake by injured cardiac tissue in MI rats, with maximal normal-to-ischemic uptake ratios of 10.47 ± 3.03 (1.5 min) and 3.92 ± 1.12 (27.5 min) (P = 0.025). Immunohistochemistry confirmed that TSPO expression was decreased in MI rats. Mitochondrial ultrastructure demonstrated significant swelling and permeability. CONCLUSION [18F]FEDAC uptake is reduced in the injured myocardium, consistent with mitochondrial dysfunction. These results may provide new evidence to aid the early detection of mitochondrial dysfunction associated with myocardial ischemic injury.
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Affiliation(s)
- Rui Luo
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, China
| | - Lei Wang
- Department of Nuclear Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Fei Ye
- Deparment of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yan-Rong Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, China
| | - Wei Fang
- Department of Nuclear Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Ming-Rong Zhang
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Feng Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, China.
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Wang C, Liu L, Wang Y, Xu D. Advances in the mechanism and treatment of mitochondrial quality control involved in myocardial infarction. J Cell Mol Med 2021; 25:7110-7121. [PMID: 34160885 PMCID: PMC8335700 DOI: 10.1111/jcmm.16744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/22/2021] [Accepted: 06/03/2021] [Indexed: 12/11/2022] Open
Abstract
Mitochondria are important organelles in eukaryotic cells. Normal mitochondrial homeostasis is subject to a strict mitochondrial quality control system, including the strict regulation of mitochondrial production, fission/fusion and mitophagy. The strict and accurate modulation of the mitochondrial quality control system, comprising the mitochondrial fission/fusion, mitophagy and other processes, can ameliorate the myocardial injury of myocardial ischaemia and ischaemia-reperfusion after myocardial infarction, which plays an important role in myocardial protection after myocardial infarction. Further research into the mechanism will help identify new therapeutic targets and drugs for the treatment of myocardial infarction. This article aims to summarize the recent research regarding the mitochondrial quality control system and its molecular mechanism involved in myocardial infarction, as well as the potential therapeutic targets in the future.
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Affiliation(s)
- Chunfang Wang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Leiling Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yishu Wang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Danyan Xu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
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21
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İkiz Ö, Kahramansoy N, Erkol H, Koçoğlu E, Fırat T. Effects of lycopene in intestinal ischemia reperfusion injury via intestinal immunoglobulin A. J Surg Res 2021; 267:63-70. [PMID: 34130240 DOI: 10.1016/j.jss.2021.04.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 03/17/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Intestinal ischemia causes an inflammatory response that may become intense by reperfusion and result in bacterial translocation. Intestinal immunoglobulin A is known to be a barrier against bacterial translocation. Lycopene is a compound with antioxidant and anti-inflammatory properties. We hypothesized that lycopene has positive effects in ischemia-reperfusion of the intestine through the intestinal IgA. MATERIAL AND METHODS Twenty-eight Wistar albino rats were separated into four groups: sham, control, lycopene-administered-before-ischemia (L-pre), and lycopene-administered-after-reperfusion groups. Histopathologic changes, intestinal immunoglobulin A levels, and bacterial translocation were evaluated after the ischemia-reperfusion period of 0.5-12 h. RESULTS Histopathologic changes, intestinal immunoglobulin A, and bacterial translocation levels in the L-pre group were similar to those in the sham group. Administration of the lycopene after reperfusion showed just a slight protective effect. However, the L-pre group had significantly fewer histopathologic changes when compared with changes in the control (P = 0.011). Intestinal immunoglobulin A level in the L-pre group was found to be higher than that in the control group (P = 0.014). Bacterial translocation levels in the blood and mesenteric lymph nodes, in the L-pre group, were lower than those in the control group (P = 0.0027 and P = 0.0097, respectively). CONCLUSIONS Lycopene limited intestinal damage, reduced loss of intestinal immunoglobulin A and decreased bacterial translocation when administered before the ischemia-reperfusion injury.
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Affiliation(s)
- Özgür İkiz
- Abant Izzet Baysal University Faculty of Medicine, Department of General Surgery, Bolu, Turkey
| | - Nurettin Kahramansoy
- Abant Izzet Baysal University Faculty of Medicine, Department of General Surgery, Bolu, Turkey.
| | - Hayri Erkol
- Abant Izzet Baysal University Faculty of Medicine, Department of General Surgery, Bolu, Turkey
| | - Esra Koçoğlu
- Abant İzzet Baysal University Faculty of Medicine, Department of Clinical Microbiology, Bolu, Turkey
| | - Tülin Fırat
- Abant İzzet Baysal University Faculty of Medicine, Department of Histology and Embryology, Bolu, Turkey
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22
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The Role of Mitochondrial Quality Control in Cardiac Ischemia/Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5543452. [PMID: 34211627 PMCID: PMC8211512 DOI: 10.1155/2021/5543452] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/18/2021] [Accepted: 05/19/2021] [Indexed: 11/17/2022]
Abstract
A healthy mitochondrial network produces a large amount of ATP and biosynthetic intermediates to provide sufficient energy for myocardium and maintain normal cell metabolism. Mitochondria form a dynamic and interconnected network involved in various cellular metabolic signaling pathways. As mitochondria are damaged, controlling mitochondrial quantity and quality is activated by changing their morphology and tube network structure, mitophagy, and biogenesis to replenish a healthy mitochondrial network to preserve cell function. There is no doubt that mitochondrial dysfunction has become a key factor in many diseases. Ischemia/reperfusion (IR) injury is a pathological manifestation of various heart diseases. Cardiac ischemia causes temporary tissue and organelle damage. Although reperfusion is essential to compensate for nutrient deficiency, blood flow restoration inconsequently further kills the previously ischemic cardiomyocytes. To date, dysfunctional mitochondria and disturbed mitochondrial quality control have been identified as critical IR injury mechanisms. Many researchers have detected abnormal mitochondrial morphology and mitophagy, as well as aberrant levels and activity of mitochondrial biogenesis factors in the IR injury model. Although mitochondrial damage is well-known in myocardial IR injury, the causal relationship between abnormal mitochondrial quality control and IR injury has not been established. This review briefly describes the molecular mechanisms of mitochondrial quality control, summarizes our current understanding of the complex role of mitochondrial quality control in IR injury, and finally speculates on the possibility of targeted control of mitochondria and the methods available to mitigate IR injury.
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Anzell AR, Fogo GM, Gurm Z, Raghunayakula S, Wider JM, Maheras KJ, Emaus KJ, Bryson TD, Wang M, Neumar RW, Przyklenk K, Sanderson TH. Mitochondrial fission and mitophagy are independent mechanisms regulating ischemia/reperfusion injury in primary neurons. Cell Death Dis 2021; 12:475. [PMID: 33980811 PMCID: PMC8115279 DOI: 10.1038/s41419-021-03752-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 02/03/2023]
Abstract
Mitochondrial dynamics and mitophagy are constitutive and complex systems that ensure a healthy mitochondrial network through the segregation and subsequent degradation of damaged mitochondria. Disruption of these systems can lead to mitochondrial dysfunction and has been established as a central mechanism of ischemia/reperfusion (I/R) injury. Emerging evidence suggests that mitochondrial dynamics and mitophagy are integrated systems; however, the role of this relationship in the context of I/R injury remains unclear. To investigate this concept, we utilized primary cortical neurons isolated from the novel dual-reporter mitochondrial quality control knockin mice (C57BL/6-Gt(ROSA)26Sortm1(CAG-mCherry/GFP)Ganl/J) with conditional knockout (KO) of Drp1 to investigate changes in mitochondrial dynamics and mitophagic flux during in vitro I/R injury. Mitochondrial dynamics was quantitatively measured in an unbiased manner using a machine learning mitochondrial morphology classification system, which consisted of four different classifications: network, unbranched, swollen, and punctate. Evaluation of mitochondrial morphology and mitophagic flux in primary neurons exposed to oxygen-glucose deprivation (OGD) and reoxygenation (OGD/R) revealed extensive mitochondrial fragmentation and swelling, together with a significant upregulation in mitophagic flux. Furthermore, the primary morphology of mitochondria undergoing mitophagy was classified as punctate. Colocalization using immunofluorescence as well as western blot analysis revealed that the PINK1/Parkin pathway of mitophagy was activated following OGD/R. Conditional KO of Drp1 prevented mitochondrial fragmentation and swelling following OGD/R but did not alter mitophagic flux. These data provide novel evidence that Drp1 plays a causal role in the progression of I/R injury, but mitophagy does not require Drp1-mediated mitochondrial fission.
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Affiliation(s)
- Anthony R. Anzell
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.254444.70000 0001 1456 7807Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201 USA ,grid.21925.3d0000 0004 1936 9000Department of Human Genetics, University of Pittsburgh, Pittsburgh, PA 15269 USA
| | - Garrett M. Fogo
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Zoya Gurm
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Frankel Cardiovascular Center, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Sarita Raghunayakula
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Joseph M. Wider
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Kathleen J. Maheras
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Katlynn J. Emaus
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Timothy D. Bryson
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Frankel Cardiovascular Center, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Madison Wang
- grid.254444.70000 0001 1456 7807Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201 USA
| | - Robert W. Neumar
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Karin Przyklenk
- grid.254444.70000 0001 1456 7807Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201 USA
| | - Thomas H. Sanderson
- grid.214458.e0000000086837370Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Frankel Cardiovascular Center, University of Michigan Medical School, Ann Arbor, MI 48109 USA ,grid.214458.e0000000086837370Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109 USA
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24
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Wen W, Chen X, Huang Z, Chen D, Yu B, He J, Zheng P, Luo Y, Yan H, Yu J. Lycopene increases the proportion of slow-twitch muscle fiber by AMPK signaling to improve muscle anti-fatigue ability. J Nutr Biochem 2021; 94:108750. [PMID: 33933581 DOI: 10.1016/j.jnutbio.2021.108750] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 02/03/2021] [Accepted: 03/30/2021] [Indexed: 10/21/2022]
Abstract
Lycopene has a wide range of biological functions, especially its antioxidant capacity. However, effects of lycopene on muscle fatigue resistant and muscle fiber type conversion are unknown. In this study, we found that lycopene significantly prolonged the swimming time to exhaustion in mice. We also showed that lycopene increased the proportion of slow-twitch muscle fiber by promoting muscle fiber type conversion from fast-twitch to slow-twitch in mice and in C2C12 myotubes. The AMP-activated protein kinase (AMPK) signaling was activated by lycopene. AMPK upstream and downstream regulators including nuclear respiratory factor 1, calcium calmodulin-dependent protein kinase kinase-β, sirtuin 1 and peroxisome proliferator activated receptor-γ coactivator-1ɑ were also increased by lycopene. AMPK inhibitor compound C markedly attenuated the lycopene-induced skeletal muscle fiber type conversion in C2C12 myotubes. Taken together, we provided the first evidence that lycopene increases the proportion of slow-twitch muscle fiber through AMPK signaling pathway to improve fatigue resistant of skeletal muscle.
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Affiliation(s)
- Wanxue Wen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiaoling Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhiqing Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jun He
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hui Yan
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jie Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
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25
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Wu Z, Zhang X, Li Z, Wen Z, Lin Y. Activation of autophagy contributes to the protective effects of lycopene against oxidative stress-induced apoptosis in rat chondrocytes. Phytother Res 2021; 35:4032-4045. [PMID: 33860572 DOI: 10.1002/ptr.7127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 01/15/2023]
Abstract
Oxidative stress is commonly associated with osteoarthritis (OA). Lycopene (LYC), a natural carotenoid compound, is an effective antioxidant with potential cartilage-protecting actions. However, how it affects hydrogen peroxide (H2 O2 )-induced damage to the cartilage is unclear. In this study, an in vitro oxidative stress model was developed via treating primary chondrocytes with H2 O2 . Western blot, immunohistochemistry, and quantitative RT-PCR (qRT-PCR) were used to assess the levels of related factors. Reactive oxygen species (ROS) and apoptosis levels were analyzed by the use of appropriate probes and flow cytometry. The expression and activity of stress-specific enzymes (malondialdehyde, superoxide dismutase, and catalase) were also assessed. The role of autophagy was explored by using the inhibitor, 3-methyladenine (3-MA), as well as monodansylcadaverine staining, western blotting, and red fluorescent protein-green fluorescent protein-light chain 3 lentivirus infection. The result showed LYC exerted significant chondrocyte-protective effects, including reduced inflammation and chondrocyte degradation, increased chondrocyte proliferation, apoptosis inhibition, and reduced ROS production. LYC could effectively induce autophagy in the H2 O2 treatment group, and this effect could be attenuated by 3-MA. In terms of mechanism, LYC played a role in inhibiting MAPK and PI3K/Akt/NF-κB axis, which down-regulates levels of mTOR and had a potential therapeutic significance for cartilage degeneration.
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Affiliation(s)
- Zhengyuan Wu
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiaohan Zhang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhengtian Li
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhenpei Wen
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yicai Lin
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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26
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Gao R, Ren L, Zhou Y, Wang L, Xie Y, Zhang M, Liu X, Ke S, Wu K, Zheng J, Liu X, Chen Z, Liu L. Recurrent non-severe hypoglycemia aggravates cognitive decline in diabetes and induces mitochondrial dysfunction in cultured astrocytes. Mol Cell Endocrinol 2021; 526:111192. [PMID: 33545179 DOI: 10.1016/j.mce.2021.111192] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 12/13/2022]
Abstract
The present study aimed to determine the relationship between astrocytes and recurrent non-severe hypoglycemia (RH)2 -associated cognitive decline in diabetes. RH induced cognitive impairment and neuronal cell death in the cerebral cortex of diabetic mice, accompanied by excessive activation of astrocytes. Levels of the neurotrophins BDNF and GDNF, together with BDNF and GDNF- related signaling, were downregulated by RH. In vitro, recurrent low glucose (RLG)3 impaired cell viability and induced apoptosis of high-glucose cultured astrocytes. Accumulating mitochondrial ROS and dysregulated mitochondrial functions, including abnormal morphology, decreased membrane potential, downregulated ATP levels, and disrupted bioenergetic status, were observed in these cells. SS-31 mediated protection of mitochondrial functions reversed RLG-induced cell viability defects and neurotrophin production. These findings demonstrate that RH induced astrocyte overactivation and mitochondrial dysfunction, leading to astrocyte-derived neurotrophin disturbance, which might contribute to diabetic cognitive decline. Targeting astrocyte mitochondria might represent a neuroprotective therapy for hypoglycemia-associated neurodegeneration in diabetes.
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Affiliation(s)
- Ruonan Gao
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Lingjia Ren
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Yu Zhou
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Lijing Wang
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Yunzhen Xie
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Mengjun Zhang
- Department of pharmacy, Zhongshan Hopital, Fudan University (Xiamen Branch), Xiamen, 361000, China
| | - Xiaoying Liu
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Sujie Ke
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Kejun Wu
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Jiaping Zheng
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Xiaohong Liu
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Zhou Chen
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
| | - Libin Liu
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, 350001, China.
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27
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Xue R, Qiu J, Wei S, Liu M, Wang Q, Wang P, Sha B, Wang H, Shi Y, Zhou J, Rao J, Lu L. Lycopene alleviates hepatic ischemia reperfusion injury via the Nrf2/HO-1 pathway mediated NLRP3 inflammasome inhibition in Kupffer cells. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:631. [PMID: 33987329 PMCID: PMC8106004 DOI: 10.21037/atm-20-7084] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Lycopene is a naturally occurring carotenoid found in many fruits and vegetables, which has antioxidant effects. Although lycopene’s protective effect has been observed on ischemia reperfusion (IR) injury in different organs, the effect of lycopene on Kupffer cells (KCs) has not been clearly elucidated in IR-induced acute hepatic inflammatory injury. Methods Mice were administered with either olive oil (10 mL/kg body weight) as the control or lycopene (20 mg/kg body weight) by gavage for 2 weeks before undergoing hepatic IR injury. Results In this study, we observed that the levels of aspartate aminotransferases (AST), alanine aminotransferase (ALT), and the percentages of hepatocellular apoptosis in mice pretreated with lycopene were significantly lower than control mice. Lycopene inhibited F4/80+ macrophage and Ly6G+ neutrophil accumulation, which further decreased the levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin 6 (IL-6). Interestingly, lycopene induced increased autophagy in KCs, which was evidenced by elevated autophagosomes and the increased protein level of LC3B. In these KCs, lycopene-induced upregulation of autophagy inhibited NOD-like receptor family pyrin domain-containing 3 protein (NLRP3) inflammasome activation, which was demonstrated by the reduced mRNA and protein levels of NLRP3, cleaved caspase-1, an apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), and IL-1β. Furthermore, 3-methyladenine, an autophagy inhibitor, abolished lycopene’s inhibitory effect on the NLRP3 inflammasome in KCs, which led to increased hepatic IR injury. Intriguingly, we identified that the protein levels of nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase 1 (HO-1) were elevated in KCs isolated from IR-stressed mice pretreated with lycopene. Nrf2-siRNA or HO-1-siRNA could block the autophagy activation enhanced by lycopene in KCs, resulting in the activation of the NLRP3 inflammasome and aggravated hepatic IR injury. Conclusions Our findings demonstrated that lycopene promoted Nrf2/HO-1 pathway activation and further suppressed the NLRP3 inflammasome via enhancing KC autophagy, which alleviated hepatic IR injury.
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Affiliation(s)
- Rong Xue
- School of Medicine, Southeast University, Nanjing, China.,Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China
| | - Jiannan Qiu
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Song Wei
- School of Medicine, Southeast University, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Mu Liu
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Qi Wang
- School of Medicine, Southeast University, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Peng Wang
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Bowen Sha
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Hao Wang
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Yong Shi
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Jinren Zhou
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China
| | - Jianhua Rao
- Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China
| | - Ling Lu
- School of Medicine, Southeast University, Nanjing, China.,Hepatobiliary Center of The First Affiliated Hospital, Nanjing Medical University, Nanjing, China & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, China.,The Affiliated Cancer Hospital (Jiangsu Cancer Hospital), Nanjing Medical University, Nanjing, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China.,Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Nanjing Medical University, Nanjing, China
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28
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Hu J, Su B, Li X, Li Y, Zhao J. Klotho overexpression suppresses apoptosis by regulating the Hsp70/Akt/Bad pathway in H9c2(2-1) cells. Exp Ther Med 2021; 21:486. [PMID: 33790995 PMCID: PMC8005687 DOI: 10.3892/etm.2021.9917] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 02/16/2021] [Indexed: 12/15/2022] Open
Abstract
Early reperfusion is the most effective and important treatment for acute myocardial infarction. However, reperfusion therapy often leads to a certain degree of myocardial damage. The aim of the present study was to identify the role of klotho, and the molecular mechanism underlying its effects, in myocardial damage using a model of myocardial hypoxia injury. Hypoxia/reoxygenation (H/R) was used to mimic ischemia/reperfusion (I/R) injury in vitro. The expression and distribution of klotho in H9c2(2-1) cells was observed by fluorogenic scanning, and the apoptotic rate was determined by Annexin V-FITC/propidium iodide dual staining. Cell viability was determined by MTT assay, and caspase-3, cleaved caspase-3, Bcl-2, Bax, heat shock protein (Hsp) 70 and Akt levels were assessed by western blotting. A lactate dehydrogenase test was performed to determine the degree of H9c2(2-1) cell damage. The results revealed that klotho was primarily located in the cytoplasm of H9c2(2-1) cells. Klotho overexpression markedly suppressed H/R-induced H9c2(2-1) cell apoptosis. Furthermore, cell viability increased, and injury decreased in response to klotho. Klotho also suppressed the activation of caspase-3, upregulated Bcl2 and decreased Bax levels following H/R injury, as well as alleviating H/R injury by upregulating the expression of Hsp70 and increasing the levels of phosphorylated (p-)Akt and Bad. In conclusion, these results indicate that klotho suppressed H/R-induced H9c2(2-1) cell apoptosis by regulating the levels of Hsp70, p-Akt and p-Bad, which suggest that klotho could be a novel agent for the treatment of coronary disease.
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Affiliation(s)
- Jinpeng Hu
- Graduate School of Tianjin Medical University, Tianjin 300070, P.R. China.,Department of Geriatric Medicine, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin 300162, P.R. China
| | - Bin Su
- Ministry of Research, Characteristic Medical Center of The Chinese People's Armed Police Force, Tianjin 300162, P.R. China
| | - Xuewen Li
- Department of Geriatric Medicine, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin 300162, P.R. China
| | - Yuming Li
- Angiocardiopathy Institute of Characteristic Medical Center of PAP, Tianjin 300162, P.R. China.,TEDA International Cardiovascular Hospital, Tianjin Economic-Technological Development Area, Tianjin 300457, P.R. China
| | - Jihong Zhao
- Department of Geriatric Medicine, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin 300162, P.R. China
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NLRP3-mediated pyroptosis aggravates pressure overload-induced cardiac hypertrophy, fibrosis, and dysfunction in mice: cardioprotective role of irisin. Cell Death Discov 2021; 7:50. [PMID: 33723236 PMCID: PMC7961005 DOI: 10.1038/s41420-021-00434-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/31/2021] [Accepted: 02/14/2021] [Indexed: 02/07/2023] Open
Abstract
The exact mechanism of myocardial hypertrophy has not been completely elucidated. NOD-like receptor protein 3 (NLRP3) and the pyroptotic cascade play a critical role in cardiac hypertrophy and inflammation. The myokine irisin can inhibit NLRP3 activation, although its exact mechanism of action is unknown. In this study, we induced cardiac hypertrophy in a mouse model via aortic constriction (TAC) to further explore the pathological role of NLRP3 inflammasome-mediated pyroptosis and the potential therapeutic effects of irisin. Cardiac hypertrophy significantly increased the percentage of apoptotic cells and upregulated IL-1β, cleaved caspase-1, and GSDMD-N that lie downstream of the NLRP3 inflammasome. Subsequently, irisin was co-administered to the TAC mice or angiotensin II (Ang-II)-treated cardiomyocytes to observe whether it could attenuate pyroptosis and cardiac hypertrophy. We established a direct association between pyroptosis and cardiac hypertrophy and found that pharmacological or genetic inhibition of NLRP3 attenuated cardiac hypertrophy. Furthermore, ectopic overexpression of NLRP3 abrogated the cardioprotective effects of irisin. To summarize, pyroptosis is a pathological factor in cardiac hypertrophy, and irisin is a promising therapeutic agent that inhibits NLRP3-mediated pyroptosis of cardiomyocytes.
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30
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Jia J, Jin H, Nan D, Yu W, Huang Y. New insights into targeting mitochondria in ischemic injury. Apoptosis 2021; 26:163-183. [PMID: 33751318 DOI: 10.1007/s10495-021-01661-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2021] [Indexed: 12/15/2022]
Abstract
Stroke is the leading cause of adult disability and death worldwide. Mitochondrial dysfunction has been recognized as a marker of neuronal death during ischemic stroke. Maintaining the function of mitochondria is important for improving the survival of neurons and maintaining neuronal function. Damaged mitochondria induce neuronal cell apoptosis by releasing reactive oxygen species (ROS) and pro-apoptotic factors. Mitochondrial fission and fusion processes and mitophagy are of great importance to mitochondrial quality control. This paper reviews the dynamic changes in mitochondria, the roles of mitochondria in different cell types, and related signaling pathways in ischemic stroke. This review describes in detail the role of mitochondria in the process of neuronal injury and protection in cerebral ischemia, and integrates neuroprotective drugs targeting mitochondria in recent years, which may provide a theoretical basis for the progress of treatment of ischemic stroke. The potential of mitochondrial-targeted therapy is also emphasized, which provides valuable insights for clinical research.
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Affiliation(s)
- Jingjing Jia
- Department of Neurology, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Haiqiang Jin
- Department of Neurology, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Ding Nan
- Department of Neurology, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Weiwei Yu
- Department of Neurology, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China.
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31
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Zhang Q, Fan A, Fu J, Zhao Q. Precise engineering of iron oxide nanoparticle-encapsulated protein hydrogel: Implications for cardiac toxicity and ultrasound contrast agents. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.01.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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32
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Ibrahim MAA, Elkaliny HH, Abd-Elsalam MM. Lycopene ameliorates the effect of Aroclor 1254 on morphology, proliferation, and angiogenesis of the thyroid gland in rat. Toxicology 2021; 452:152722. [PMID: 33592256 DOI: 10.1016/j.tox.2021.152722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 02/03/2021] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
Aroclor 1254 is a mixture of polychlorinated biphenyls that are reported to disrupt thyroid hormone homeostasis, yet little is known on its effect on thyroid gland microarchitecture. Lycopene is a commonly used potent antioxidant. This study is a biochemical, histological, and immunohistochemical assessment of the effect of Aroclor 1254 on the morphology, proliferation, and angiogenesis of the thyroid gland in rat and to evaluate the possible ameliorating role of lycopene. Twenty-four adult male albino rats were divided into 4 groups; Control, lycopene-treated (4 mg/kg/day orally for 30 days), Aroclor 1254-treated (2 mg/kg/day intraperitoneally for 30 days), and lycopene & Aroclor 1254-treated group. Serum thyroid hormones, thyroid-stimulating hormone (TSH), and tissue malondialdehyde (MDA) were quantified. Thyroid specimens were processed for histological staining with hematoxylin and eosin, periodic acid-Schiff, and Mallory's trichrome stains as well as immunohistochemical staining for detection of calcitonin, Ki67, and VEGF. In this study, Aroclor 1254-treated animals recorded a significant decline in both serum T3 and T4 coupled with a significant elevation in both TSH and tissue MDA. Histological sections showed small irregular follicles with the formation of hyperplastic and micro follicles. Some follicular and parafollicular cells depicted nuclear and cytoplasmic alterations associating with scanty or absent colloid in addition to signs of inflammation and fibrosis. A significant upregulation in the immunohistochemical expression of calcitonin, Ki67, and VEGF was recorded. Lycopene co-treatment successfully reinstated the values of most studied parameters and retrieved a near-control thyroid morphology. In conclusion, Aroclor 1254 impacted the thyroid hormone homeostasis, morphology, proliferation, and angiogenesis of the thyroid gland in rat, while lycopene efficiently ameliorated these adverse effects.
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Affiliation(s)
- Marwa A A Ibrahim
- Histology and Cell Biology Department, Faculty of Medicine, Tanta University, Egypt.
| | - Heba H Elkaliny
- Histology and Cell Biology Department, Faculty of Medicine, Tanta University, Egypt
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Kirmizi DA, Baser E, Okan A, Kara M, Yalvac ES, Doganyigit Z. The effect of a natural molecule in ovary ischemia reperfusion damage: does lycopene protect ovary? Exp Anim 2021; 70:37-44. [PMID: 32921696 PMCID: PMC7887625 DOI: 10.1538/expanim.20-0080] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/12/2020] [Indexed: 12/13/2022] Open
Abstract
Ovarian ischemia is a gynecological emergency case that occurs as a result of ovarian torsion. Oxidative stress plays a central role in the development of ischemia/reperfusion (IR) injuries. Lycopene (LYC) is a lipophilic, natural carotenoid well known for its antioxidant properties. This study provides information on the potential applications of lycopene. The Wistar Albino rats were distributed into six groups: Sham group (only a laparotomy was performed), Control group [laparotomy and intraperitoneal dissolvent (olive oil)], IR group, IR+olive oil group, IR+LYC 2.5 mg/kg/dose, intraperitoneal group, IR+LYC 5 mg/kg/dose intraperitoneal group. Evaluated in terms of histopathological changes, tissue malondialdehyde levels (MDA), ovarian expressions of phosphorylated nuclear factor-kappa B (p-NF-κB) and the TUNEL method was utilized to show apoptosis of ovarian tissue. There was a significant decrease in MDA, p-NF-κB values and the proportion of apoptotic cells assessed by TUNEL compared to the group that did not receive intraperitoneal LYC in rat injury with IR damage (P<0.05). In histopathological damage scoring, it was observed that the cell damage was significantly reduced in LYC-administered groups. LYC showed significant ameliorative effects on ovary injury caused by IR through acting as an antioxidant, antiinflammatory, and antiapoptotic agent.
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Affiliation(s)
- Demet Aydogan Kirmizi
- Yozgat Bozok University, Faculty of Medicine, Department of Obstetrics and Gynecology, Adnan Menderes Boulevard No:44, 66100, Yozgat, Turkey
| | - Emre Baser
- Yozgat Bozok University, Faculty of Medicine, Department of Obstetrics and Gynecology, Adnan Menderes Boulevard No:44, 66100, Yozgat, Turkey
| | - Aslı Okan
- Yozgat Bozok University, Faculty of Medicine, Department of Histology and Embryology, Adnan Menderes Boulevard No:44, 66100, Yozgat, Turkey
| | - Mustafa Kara
- Ahi Evran University Training and Research Hospital, Department of Obstetrics and Gynecology, Bagbasi District Sahir Kurutluoğlu Street No: 100, 40100, Kırsehir, Turkey
| | - Ethem Serdar Yalvac
- Yozgat Bozok University, Faculty of Medicine, Department of Obstetrics and Gynecology, Adnan Menderes Boulevard No:44, 66100, Yozgat, Turkey
| | - Zuleyha Doganyigit
- Yozgat Bozok University, Faculty of Medicine, Department of Histology and Embryology, Adnan Menderes Boulevard No:44, 66100, Yozgat, Turkey
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Chang X, Zhao Z, Zhang W, Liu D, Ma C, Zhang T, Meng Q, Yan P, Zou L, Zhang M. Natural Antioxidants Improve the Vulnerability of Cardiomyocytes and Vascular Endothelial Cells under Stress Conditions: A Focus on Mitochondrial Quality Control. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6620677. [PMID: 33552385 PMCID: PMC7847351 DOI: 10.1155/2021/6620677] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/08/2020] [Accepted: 12/24/2020] [Indexed: 02/06/2023]
Abstract
Cardiovascular disease has become one of the main causes of human death. In addition, many cardiovascular diseases are accompanied by a series of irreversible damages that lead to organ and vascular complications. In recent years, the potential therapeutic strategy of natural antioxidants in the treatment of cardiovascular diseases through mitochondrial quality control has received extensive attention. Mitochondria are the main site of energy metabolism in eukaryotic cells, including myocardial and vascular endothelial cells. Mitochondrial quality control processes ensure normal activities of mitochondria and cells by maintaining stable mitochondrial quantity and quality, thus protecting myocardial and endothelial cells against stress. Various stresses can affect mitochondrial morphology and function. Natural antioxidants extracted from plants and natural medicines are becoming increasingly common in the clinical treatment of diseases, especially in the treatment of cardiovascular diseases. Natural antioxidants can effectively protect myocardial and endothelial cells from stress-induced injury by regulating mitochondrial quality control, and their safety and effectiveness have been preliminarily verified. This review summarises the damage mechanisms of various stresses in cardiomyocytes and vascular endothelial cells and the mechanisms of natural antioxidants in improving the vulnerability of these cell types to stress by regulating mitochondrial quality control. This review is aimed at paving the way for novel treatments for cardiovascular diseases and the development of natural antioxidant drugs.
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Affiliation(s)
- Xing Chang
- Wangjing Hospital, China Academy of Chinese Medical Sciences, China
- Guang'anmen Hospital, Chinese Academy of Traditional Chinese Medicine, Beijing, China
| | - Zhenyu Zhao
- Wangjing Hospital, China Academy of Chinese Medical Sciences, China
| | - Wenjin Zhang
- Wangjing Hospital, China Academy of Chinese Medical Sciences, China
- College of Pharmacy, Ningxia Medical University, Ningxia, China
| | - Dong Liu
- China Academy of Chinese Medical Sciences, Institute of the History of Chinese Medicine and Medical Literature, Beijing, China
| | - Chunxia Ma
- Shandong Analysis and Test Centre, Qilu University of Technology, Jinan, China
| | - Tian Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Qingyan Meng
- College of Pharmacy, Ningxia Medical University, Ningxia, China
| | - Peizheng Yan
- College of Pharmacy, Ningxia Medical University, Ningxia, China
| | - Longqiong Zou
- Chongqing Sanxia Yunhai Pharmaceutical Co., Ltd., Chongqing, China
| | - Ming Zhang
- Wangjing Hospital, China Academy of Chinese Medical Sciences, China
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Chang X, Zhang W, Zhao Z, Ma C, Zhang T, Meng Q, Yan P, Zhang L, Zhao Y. Regulation of Mitochondrial Quality Control by Natural Drugs in the Treatment of Cardiovascular Diseases: Potential and Advantages. Front Cell Dev Biol 2020; 8:616139. [PMID: 33425924 PMCID: PMC7793684 DOI: 10.3389/fcell.2020.616139] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022] Open
Abstract
Mitochondria are double-membraned cellular organelles that provide the required energy and metabolic intermediates to cardiomyocytes. Mitochondrial respiratory chain defects, structure abnormalities, and DNA mutations can affect the normal function of cardiomyocytes, causing an imbalance in intracellular calcium ion homeostasis, production of reactive oxygen species, and apoptosis. Mitochondrial quality control (MQC) is an important process that maintains mitochondrial homeostasis in cardiomyocytes and involves multi-level regulatory mechanisms, such as mitophagy, mitochondrial fission and fusion, mitochondrial energy metabolism, mitochondrial antioxidant system, and mitochondrial respiratory chain. Furthermore, MQC plays a role in the pathological mechanisms of various cardiovascular diseases (CVDs). In recent years, the regulatory effects of natural plants, drugs, and active ingredients on MQC in the context of CVDs have received significant attention. Effective active ingredients in natural drugs can influence the production of energy-supplying substances in the mitochondria, interfere with the expression of genes associated with mitochondrial energy requirements, and regulate various mechanisms of MQC modulation. Thus, these ingredients have therapeutic effects against CVDs. This review provides useful information about novel treatment options for CVDs and development of novel drugs targeting MQC.
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Affiliation(s)
- Xing Chang
- China Academy of Chinese Medical Sciences, Beijing, China.,Guang'anmen Hospital of Chinese Academy of Traditional Chinese Medicine, Beijing, China
| | - Wenjin Zhang
- China Academy of Chinese Medical Sciences, Beijing, China.,College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Zhenyu Zhao
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Chunxia Ma
- Shandong Analysis and Test Center, Qilu University of Technology, Jinan, China
| | - Tian Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Qingyan Meng
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Peizheng Yan
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Lei Zhang
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yuping Zhao
- China Academy of Chinese Medical Sciences, Beijing, China
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Thioredoxin protects mitochondrial structure, function and biogenesis in myocardial ischemia-reperfusion via redox-dependent activation of AKT-CREB- PGC1α pathway in aged mice. Aging (Albany NY) 2020; 12:19809-19827. [PMID: 33049718 PMCID: PMC7732314 DOI: 10.18632/aging.104071] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/19/2020] [Indexed: 01/24/2023]
Abstract
Aging is an independent risk factor for cardiovascular diseases, such as myocardial infarction due to ischemia-reperfusion injury (I/R) of the heart. Cytosolic thioredoxin (Trx) is a multifunctional redox protein which has antioxidant and protein disulfide reducing properties. We hypothesized that high levels of Trx will protect against multifactorial disease such as myocardial infarction due to I/R injury in aged mice. Aged mice overexpressing human Trx (Trx-Tg), mice expressing redox-inactive mutant of human Trx (dnTrx-Tg) and non-transgenic litter-mates (NT) were subjected to I/R (60/30 min), and cardiac function, mitochondrial structure and function, and biogenesis involving PGC1α pathway were evaluated in these mice. While aged Trx-Tg mice were protected from I/R-induced reduction in ejection fraction (EF) and fractional shortening (FS), had smaller infarct with decreased apoptosis and preserved mitochondrial function, aged dnTrx-Tg mice showed enhanced myocardial injury and mitochondrial dysfunction. Further, Trx-Tg mice were protected from I/R induced loss of PGC1α, ACO2, MFN1 and MFN2 in the myocardium. The dnTrx-Tg mice were highly sensitive to I/R induced apoptosis. Overall, our study demonstrated that the loss of Trx redox balance in I/R in aged NT or dnTrx-Tg mice resulted in decreased PGC1α expression that decreased mitochondrial gene expression with increased myocardial apoptosis. High levels of Trx, but not mitochondrial thioredoxin (Trx-2) maintained Trx redox balance in I/R resulting in increased PGC1α expression via AKT/CREB activation upregulating mitochondrial gene expression and protection against I/R injury.
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Roles of Reactive Oxygen Species in Biological Behaviors of Prostate Cancer. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1269624. [PMID: 33062666 PMCID: PMC7538255 DOI: 10.1155/2020/1269624] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023]
Abstract
Prostate cancer (PCa), known as a heterogenous disease, has a high incidence and mortality rate around the world and seriously threatens public health. As an inevitable by-product of cellular metabolism, reactive oxygen species (ROS) exhibit beneficial effects by regulating signaling cascades and homeostasis. More and more evidence highlights that PCa is closely associated with age, and high levels of ROS are driven through activation of several signaling pathways with age, which facilitate the initiation, development, and progression of PCa. Nevertheless, excessive amounts of ROS result in harmful effects, such as genotoxicity and cell death. On the other hand, PCa cells adaptively upregulate antioxidant genes to detoxify from ROS, suggesting that a subtle balance of intracellular ROS levels is required for cancer cell functions. The current review discusses the generation and biological roles of ROS in PCa and provides new strategies based on the regulation of ROS for the treatment of PCa.
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Ou S, Fang Y, Tang H, Wu T, Chen L, Jiang M, Zhou L, Xu J, Guo K. Lycopene protects neuroblastoma cells against oxidative damage via depression of ER stress. J Food Sci 2020; 85:3552-3561. [PMID: 32885410 DOI: 10.1111/1750-3841.15419] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 07/27/2020] [Indexed: 01/19/2023]
Abstract
Lycopene is a pigment derived from tomatoes and other red fruits, and has potent antioxidant and antitumor effects. However, its potential role in alleviating oxidative damage in neuronal cells is not well defined. In this study, we investigated the effects of lycopene on H2 O2 -induced damage in neuroblastoma cells, as well as the underlying mechanisms. Exposure to H2 O2 markedly decreased the viability of SH-SY5Y cells and increased LDH release, both of which were reversed by lycopene pretreatment. Lycopene also ameliorated H2 O2 -induced damage and reduced the expression of apoptotic markers, such as Bcl-2, Bax, and cleaved caspase 3. In addition, the H2 O2 -induced oxidative markers, including MDA, 8-OHdG, and protein carbonyls, were also downregulated by lycopene. Exogenous H2 O2 activated the GRP78/PERK/eIF2α signaling pathway, which was inhibited by pretreatment with lycopene. Finally, lycopene significantly ameliorated ER stress-induced activation and nuclear translocation of CHOP. Overexpression of CHOP markedly reversed the antiapoptotic effects of lycopene, indicating that it is essential for the latter's protective effects. Taken together, lycopene protects neuroblastoma cells from oxidative stress and ER stress-induced damage by inhibiting the PERK-CHOP signaling pathway, which is a potential therapeutic target in neurodegenerative diseases. PRACTICAL APPLICATION: Lycopene demonstrated antioxidative damage properties in protecting the neural system in vitro. The present study provides a novel preventive strategy against neurodegenerative diseases. Increased consumption of lycopene-based products and lycopene-rich fruits and vegetables may result in a lower risk for neurodegenerative diseases.
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Affiliation(s)
- Shanshan Ou
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.,The 5th Affiliated Hospital of Sun Yat-sen University, Zhuhai, 519000, China
| | - Yinchao Fang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Hai Tang
- Guangdong Jiangmen Chinese Medical College, Jiangmen, Guangdong, 529000, China
| | - Tong Wu
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Lizhi Chen
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Mei Jiang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Lingqi Zhou
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Jie Xu
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Kaihua Guo
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
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Liu B, Yan L, Jiao X, Sun X, Zhao Z, Yan J, Guo M, Zang Y. Lycopene Alleviates Hepatic Hypoxia/Reoxygenation Injury Through Nrf2/HO-1 Pathway in AML12 Cell. J Interferon Cytokine Res 2020; 40:406-417. [PMID: 32813603 DOI: 10.1089/jir.2020.0038] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Bing Liu
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Lihong Yan
- The Library of the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xuefei Jiao
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xiaozhi Sun
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Zonggang Zhao
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Junwei Yan
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Mingjin Guo
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yunjin Zang
- Institute of Transplantation Science, Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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Mechanisms and pharmacokinetic/pharmacodynamic profiles underlying the low nephrotoxicity and ototoxicity of etimicin. Acta Pharmacol Sin 2020; 41:866-878. [PMID: 31937930 PMCID: PMC7468263 DOI: 10.1038/s41401-019-0342-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 12/02/2019] [Indexed: 02/03/2023] Open
Abstract
Etimicin (ETM), a fourth-generation aminoglycosides (AGs), is now widely clinically used in China due to its high efficacy and low toxicity. However, the mechanisms underlying its low nephrotoxicity and ototoxicity remain unclear. In the present study we compared the antibacterial and toxicity profiles of etimicin, gentamicin (GM, a second-generation AG), and amikacin (AMK, a third-generation AG), and investigated their pharmacokinetic properties in the toxicity target organs (kidney and inner ear) and subcellular compartments. We first demonstrated that ETM exhibited superior antibacterial activities against clinical isolates to GM and AMK, and it exerted minimal nephrotoxicity and ototoxicity in rats following multi-dose administration. Then, we conducted pharmacokinetic studies in rats, showed that the three AGs accumulated in the kidney and inner ear with ETM being distributed to a lesser degree in the two toxicity target organs as compared with GM and AMK high-dose groups. Furthermore, we conducted in vitro experiments in NRK-52E rat renal tubular epithelial cells and HEI-OC1 cochlear hair cells, and revealed that all the three AGs were distributed predominantly in the mitochondria with ETM showing minimal accumulation; they not only directly inhibited the activity of mitochondrial complexes IV and V but also inhibited mitochondrial function and its related PGC-1α-NRF1-TFAM pathway; ETM caused minimal damage to the mitochondrial complex and mitochondrial biogenesis. Our results demonstrate that the minimal otonephrotoxicity of ETM results from its lesser accumulation in mitochondria of target cells and subsequently lesser inhibition of mitochondrial function. These results provide a new strategy for discovering novel AGs with high efficacy and low toxicity.
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Antiepithelial-Mesenchymal Transition of Herbal Active Substance in Tumor Cells via Different Signaling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9253745. [PMID: 32377312 PMCID: PMC7183534 DOI: 10.1155/2020/9253745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/06/2020] [Indexed: 12/31/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is a biological process through which epithelial cells differentiate into mesenchymal cells. EMT plays an important role in embryonic development and wound healing; however, EMT also contributes to some pathological processes, such as tumor metastasis and fibrosis. EMT mechanisms, including gene mutation and transcription factor regulation, are complicated and not yet well understood. In this review, we introduce some herbal active substances that exert antitumor activity through inhibiting EMT that is induced by hypoxia, high blood glucose level, lipopolysaccharide, or other factors.
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Koller A, Fazzini F, Lamina C, Rantner B, Kollerits B, Stadler M, Klein-Weigel P, Fraedrich G, Kronenberg F. Mitochondrial DNA copy number is associated with all-cause mortality and cardiovascular events in patients with peripheral arterial disease. J Intern Med 2020; 287:569-579. [PMID: 32037598 PMCID: PMC7318579 DOI: 10.1111/joim.13027] [Citation(s) in RCA: 24] [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: 09/18/2019] [Revised: 12/18/2019] [Accepted: 01/15/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Dysfunctional mitochondria have an influence on inflammation and increased oxidative stress due to an excessive production of reactive oxygen species. The mitochondrial DNA copy number (mtDNA-CN) is a potential biomarker for mitochondrial dysfunction and has been associated with various diseases. However, results were partially contrasting which might have been caused by methodological difficulties to quantify mtDNA-CN. OBJECTIVE We aimed to investigate whether mtDNA-CN is associated with peripheral arterial disease (PAD) as well as all-cause mortality and cardiovascular events during seven years of follow-up. METHODS A total of 236 male patients with PAD from the Cardiovascular Disease in Intermittent Claudication (CAVASIC) study were compared with 249 age- and diabetes-matched controls. MtDNA-CN was measured with a well-standardized plasmid-normalized quantitative PCR-based assay determining the ratio between mtDNA-CN and nuclear DNA. RESULTS Individuals in the lowest quartile of mtDNA-CN had a twofold increased risk for PAD which, however, was no longer significant after adjusting for leukocytes and platelets. About 67 of the 236 patients had already experienced a cardiovascular event at baseline and those in the lowest mtDNA-CN quartile had a 2.34-fold increased risk for these events (95% CI 1.08-5.13). During follow-up, 37 PAD patients died and 66 patients experienced a cardiovascular event. Patients in the lowest mtDNA-CN quartile had hazard ratios of 2.66 (95% CI 1.27-5.58) for all-cause-mortality and 1.82 (95% CI 1.02-3.27) for cardiovascular events compared with the combined quartile 2-4 (adjusted for age, smoking, CRP, diabetes, prevalent cardiovascular disease, leukocytes and platelets). CONCLUSION This investigation supports the hypothesis of mitochondrial dysfunction in peripheral arterial disease and shows an association of low mtDNA-CNs with all-cause-mortality and prevalent and incident cardiovascular disease in PAD patients with intermittent claudication.
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Affiliation(s)
- A Koller
- From the, Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - F Fazzini
- From the, Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - C Lamina
- From the, Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - B Rantner
- Department of Vascular Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - B Kollerits
- From the, Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - M Stadler
- 3rd Medical Department of Metabolic Diseases and Nephrology, Hietzing Hospital, Vienna, Austria.,Diabetes Research Group, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - P Klein-Weigel
- Clinic of Angiology, Center of Vascular Medicine, Ernst von Bergmann Klinikum, Potsdam, Germany
| | - G Fraedrich
- Department of Vascular Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - F Kronenberg
- From the, Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
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Abstract
Ischemia/reperfusion (I/R) injury is a common occurrence resulting from acute mesenteric ischemia, traumatic or septic shock, burns, and surgical procedures that can lead to multiple organ failure and high mortality in critically ill patients. Mitochondria are often considered the cellular power factory via their capacity for ATP generation. Recently, mitochondria have been further identified as vital regulators of cell death, inflammation, and oxidative stress, all of which can aggravate I/R injury. Studies have indicated that mitochondrial DNA (mtDNA) damage leads to mitochondrial dysfunction and aggravates I/R injury. mtDNA is emerging as an agonist of the innate immune system that influences inflammatory pathology during I/R injury. In addition, when mtDNA is released into the cytoplasm, extracellular milieu, or circulation, it can activate multiple pattern-recognition receptors to trigger type I interferon and pro-inflammatory responses. Here, we review the emerging role of mtDNA in I/R injury to highlight novel mechanistic insights and discuss the pathophysiological relevance of mitochondrial biology.
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44
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Zhang XX, Wu XS, Mi SH, Fang SJ, Liu S, Xin Y, Zhao QM. Neuregulin-1 promotes mitochondrial biogenesis, attenuates mitochondrial dysfunction, and prevents hypoxia/reoxygenation injury in neonatal cardiomyocytes. Cell Biochem Funct 2020; 38:549-557. [PMID: 32037595 DOI: 10.1002/cbf.3503] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 12/02/2019] [Accepted: 12/22/2019] [Indexed: 01/24/2023]
Abstract
Neuregulin-1 (NRG-1)/erythroblastic leukaemia viral oncogene homologues (ErbB) pathway activation plays a crucial role in regulating the adaptation of the adult heart to physiological and pathological stress. In the present study, we investigate the effect of recombined human NRG-1 (rhNRG-1) on mitochondrial biogenesis, mitochondrial function, and cell survival in neonatal rat cardiac myocytes (NRCMs) exposed to hypoxia/reoxygenation (H/R). The results of this study showed that, in the H/R-exposed NRCMs, mitochondrial biogenesis was impaired, as manifested by the decrease of the expression of peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) and mitochondrial membrane proteins, the inner membrane (Tim23), mitofusin 1 (Mfn1), and mitofusin 2 (Mfn2). RhNRG-1 pretreatment effectively restored the expression of PGC-1α and these membrane proteins, upregulated the expression of the anti-apoptosis proteins Bcl-2 and Bcl-xL, preserved the mitochondrial membrane potential, and attenuated H/R-induced cell apoptosis. Blocking PGC-1 expression with siRNA abolished the beneficial role of rhNRG-1 on mitochondrial function and cell survival. The results of the present study strongly suggest that NRG-1/ErbB activation enhances the adaption of cardiomyocytes to H/R injury via promoted mitochondrial biogenesis and improved mitochondrial homeostasis. SIGNIFICANCE OF THE STUDY: The results of this research revealed for the first time the relationship between neuregulin-1 (NRG-1)/erythroblastic leukaemia viral oncogene homologues (ErbB) activation and mitochondrial biogenesis in neonatal cardiomyocytes and verified the significance of this promoted mitochondrial biogenesis in attenuating hypoxia/reoxygenation injury. This finding may open a new field to further understand the biological role of NRG-1/ErbB signalling pathway in cardiomyocyte.
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Affiliation(s)
- Xiao-Xia Zhang
- Department of Cardiology, Beijing AnZhen Hospital, Capital Medical University, Beijing, China
| | - Xue-Si Wu
- Department of Cardiology, Beijing AnZhen Hospital, Capital Medical University, Beijing, China
| | - Shu-Hua Mi
- Department of Cardiology, Beijing AnZhen Hospital, Capital Medical University, Beijing, China
| | - Shan-Juan Fang
- Emergency and Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, China
| | - Sa Liu
- Institute of Heart Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, The Capital Medical University, Beijing, China
| | - Yi Xin
- Institute of Heart Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, The Capital Medical University, Beijing, China
| | - Quan-Ming Zhao
- Department of Cardiology, Beijing AnZhen Hospital, Capital Medical University, Beijing, China
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Cai HA, Tao X, Zheng LJ, Huang L, Peng Y, Liao RY, Zhu YM. Ozone alleviates ischemia/reperfusion injury by inhibiting mitochondrion-mediated apoptosis pathway in SH-SY5Y cells. Cell Biol Int 2020; 44:975-984. [PMID: 31880362 DOI: 10.1002/cbin.11294] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 12/25/2019] [Indexed: 12/11/2022]
Abstract
Cerebral ischemia/reperfusion (I/R) injuries are common and often cause severe complications. Ozone has been applied for protecting I/R injury in animal models of several organs including cerebra, but the detailed mechanism remains unclear. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and lactate dehydrogenase measurement were used to determine the influence of ozone on cell activity and damage of SH-SY5Y cells. Some redox items such as catalase (CAT), malondialdehyde (MDA), glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD) were measured by enzyme-linked immunosorbent assay. The mitochondrial membrane potential (ΔΨm ) was determined by JC-1 assay. Cytochrome-c (cyt-c) level in the cytoplasm and mitochondrion was measured by western blotting. Apoptosis was determined by flow cytometry, and some apoptosis-related molecules were detected by quantitative real-time polymerase chain reaction and western blotting. Ozone alleviated oxidative damage by increasing GSH-Px, SOD, CAT, and decreasing MDA. Ozone decreased mitochondrial damage caused by I/R injury and inhibited the release of cyt-c from mitochondrion to cytoplasm in SH-SY5Y cells. The cell apoptosis caused by I/R was inhibited by ozone, and ozone could decrease apoptosis by increasing the ratio of Bcl-2/Bax and inhibiting caspase signaling pathway in SH-SY5Y cells. Ozone has the ability of maintaining redox homeostasis, decreasing mitochondrion damage, and inhibiting neurocytes apoptosis induced by I/R. Therefore, ozone may be a promising protective strategy against cerebral I/R injury.
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Affiliation(s)
- Hua-An Cai
- Department of Rehabilitative Medicine, Laboratory of Sports Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Xi Tao
- Department of Rehabilitative Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Li-Jun Zheng
- Department of Rehabilitative Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Liang Huang
- Department of Rehabilitative Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Yan Peng
- Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Ruo-Yi Liao
- Department of Nursing, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, P.R. China
| | - Yi-Min Zhu
- Hunan Provincial Key Laboratory of Emergency and Critical Care Metabonomics, Changsha, 410005, P.R. China
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Wu Y, Hao C, Liu X, Han G, Yin J, Zou Z, Zhou J, Xu C. MitoQ protects against liver injury induced by severe burn plus delayed resuscitation by suppressing the mtDNA-NLRP3 axis. Int Immunopharmacol 2020; 80:106189. [PMID: 31931374 DOI: 10.1016/j.intimp.2020.106189] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/17/2019] [Accepted: 01/03/2020] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Liver injury induced by burn plus delayed resuscitation (B + DR) is life threatening in clinical settings. Mitochondrial damage and oxidative stress may account for the liver injury. MitoQ is a mitochondria-targeted antioxidant. We aimed to evaluate whether MitoQ protects against B + DR-induced liver injury. METHODS Rats were randomly divided into three groups: (1) the sham group; (2) the B + DR group, which was characterized by third-degree burn of 30% of the total body surface area plus delayed resuscitation, and (3) the treatment group, in which rats from the B + DR model received the target treatment. MitoQ was injected intraperitoneally (i.p) at 15 min before resuscitation and shortly after resuscitation. In the vitro experiments, Kupffer cells (KCs) were subjected to hypoxia/reoxygenation (H/R) injury to simulate the B + DR model. Mitochondrial characteristics, oxidative stress, liver function, KCs apoptosis and activation of the NLRP3 inflammasome in KCs were measured. RESULTS B + DR caused liver injury and oxidative stress. Excessive ROS lead to liver injury by damaging mitochondrial integrity and activating the mitochondrial DNA (mtDNA)-NLRP3 axis in KCs. The oxidized mtDNA, which was released into the cytosol during KCs apoptosis, directly bound and activated the NLRP3 inflammasome. MitoQ protected against liver injury by scavenging intracellular and mitochondrial ROS, preserving mitochondrial integrity and function, reducing KCs apoptosis, inhibiting the release of mtDNA, and suppressing the mtDNA-NLRP3 axis in KCs. CONCLUSION MitoQ protected against B + DR-induced liver injury by suppressing the mtDNA-NLRP3 axis.
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Affiliation(s)
- Yin Wu
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
| | - Chao Hao
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China.
| | - Xiongfei Liu
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
| | - Guangye Han
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
| | - Jun Yin
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
| | - Zhongtao Zou
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
| | - Jinfeng Zhou
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
| | - Changzheng Xu
- Department of Burn and Plastic Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China
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Zhang Y, Zuo Y, Li B, Xie J, Ma Z, Thirupathi A, Yu P, Gao G, Shi M, Zhou C, Xu H, Chang Y, Shi Z. Propofol prevents oxidative stress and apoptosis by regulating iron homeostasis and targeting JAK/STAT3 signaling in SH-SY5Y cells. Brain Res Bull 2019; 153:191-201. [PMID: 31472185 DOI: 10.1016/j.brainresbull.2019.08.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/09/2019] [Accepted: 08/26/2019] [Indexed: 12/11/2022]
Abstract
The present study aimed to test the hypothesis that propofol (PRO) could exert a neuroprotective effect via inhibiting oxidative stress induced by iron accumulation. Human SH-SY5Y cells were pretreated with ferric citrate (FAC), and then were protected by PRO. Cell viability was measured by MTT method. Iron levels were assayed by ICP-MS. Cell apoptosis was examined by TUNEL and digital holographic technique. Malondialdehyde (MDA), reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) depolarization were measured by MDA, DCFH-DA and JC-1 kits, respectively. The expression of proteins or genes involved in iron metabolism such as ferritin, TfR1, DMT1, Fpn1 and hepcidin, and other apoptosis-related proteins including Bcl2, Bax, Bid, Cox2, IL-6, JAK1 and STAT3 were detected by western blot. Our results showed low concentration of PRO (5 μM) could significantly prevent FAC induced apoptosis via inhibiting oxidative stress and iron accumulation. PRO suppressed the increase of ROS and MDA and decrease of MMP induced by FAC. PRO significantly down-regulated the expression of ferritin and up-regulated the expression of TfR1and Fpn1, but had no effect of DMT1. Furthermore, this effect was not done by PRO chelating iron. Meanwhile, PRO suppressed the inflammatory response through inhibiting IL-6 and Cox2 expression and activating JAK/STAT3 signaling induced by iron overload. In conclusion, here we demonstrated a new antioxidation mechanism of PRO. PRO could protect against nerve cell injury induced by overload of iron through regulating iron metabolism and inhibiting stress oxidative and inflammation reaction pathways by targeting JAK/STAT3 signaling.
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Affiliation(s)
- Ying Zhang
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Yong Zuo
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Bowen Li
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Jinhong Xie
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Zhao Ma
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Anand Thirupathi
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Peng Yu
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Guofen Gao
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Mengtong Shi
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Changhao Zhou
- First Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei Province, China
| | - Hongmeng Xu
- Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei Province, China
| | - Yanzhong Chang
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China.
| | - Zhenhua Shi
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China.
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Liu X, Lin X, Zhang S, Guo C, Li J, Mi Y, Zhang C. Lycopene ameliorates oxidative stress in the aging chicken ovary via activation of Nrf2/HO-1 pathway. Aging (Albany NY) 2019; 10:2016-2036. [PMID: 30115814 PMCID: PMC6128425 DOI: 10.18632/aging.101526] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 08/10/2018] [Indexed: 11/25/2022]
Abstract
After 480 days of age, high-producing hens are likely to be subject to ovarian aging, mainly due to oxidative stress. In this study, the amelioration of ovarian aging in chickens, using a plant antioxidant, lycopene, was investigated. The activity of the Nrf2/HO-1 pathway in chicken ovaries at different ages (90, 150, 280 and 580 days old) were compared to elucidate any age-related changes. Subsequently, the putative attenuating effect of lycopene (100 ng/mL) on ovarian aging was evaluated through the establishment of a D-gal-induced aging ovarian culture model. The cultured ovarian tissues of young (280 days) and old (580 days) hens were treated with lycopene for 72 h to verify protective effects of lycopene on naturally aged ovaries. Results showed that the Nrf2/HO-1 pathway was down-regulated during the ovarian aging process. Lycopene rescued the decreased antioxidant capacity by increasing the activities of antioxidases and activating the Nrf2/HO-1 pathway in both D-gal-induced and naturally aged ovaries. Moreover, lycopene promoted cell proliferation and inhibited apoptosis in both D-gal-induced and naturally aged ovaries. Lycopene also alleviated D-gal-induced mitochondrial damage in the living granulosa cells. In conclusion, lycopene can effectively ameliorate the oxidative stress in aging hen ovaries via the activation of the Nrf2/HO-1 pathway.
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Affiliation(s)
- Xingting Liu
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xin Lin
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Siyu Zhang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Changquan Guo
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jian Li
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuling Mi
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Caiqiao Zhang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
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Shen Q, Wu J, Ni Y, Xie X, Yu C, Xiao Q, Zhou J, Wang X, Fu Z. Exposure to jet lag aggravates depression-like behaviors and age-related phenotypes in rats subject to chronic corticosterone. Acta Biochim Biophys Sin (Shanghai) 2019; 51:834-844. [PMID: 31314053 DOI: 10.1093/abbs/gmz070] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Indexed: 01/09/2023] Open
Abstract
Our previous finding demonstrated that chronic corticosterone (CORT) may be involved in mediating the pathophysiology of premature aging in rats. Frequent jet lag increases the risk for many diseases, including obesity and type 2 diabetes, and is associated with the aging processes. However, the effect of jet lag on CORT-induced depression and its association with aging phenotypes remain unclear. In this study, the rats were exposed to both CORT and jet lag treatment, and the differences were analyzed and compared to rats with single CORT treatment. Our results showed that jet lag treatment aggravated CORT-induced depression-like behavior evidenced by sucrose intake test, forced swimming test, and open field test. Additionally, this treatment aggravated the shortening of telomeres, which possibly resulted in decreased telomerase activity, and downregulated the expression of telomere-binding factor 2 (TRF2) and telomerase reverse transcriptase compared to that in CORT rats, as revealed by quantitative real-time-polymerase chain reaction and western blot analysis, respectively. The shortening of telomeres may have been caused by increased oxidative stress, which was associated with the inhibition of sirtuin 3. Exposure to jet lag also aggravated the degeneration of mitochondrial functions, as shown by the decreases in the mRNA expression of COX1, ND1, and Tfam. Our findings provide physiological evidence that jet lag exposure may worsen stress-induced depression and age-related abnormalities.
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Affiliation(s)
- Qichen Shen
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Junli Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Yuehan Ni
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Xiaoxian Xie
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Chunan Yu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Qingfeng Xiao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Jiafeng Zhou
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Xia Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
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50
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Liu DW, Zhang YN, Hu HJ, Zhang PQ, Cui W. Downregulation of microRNA‑199a‑5p attenuates hypoxia/reoxygenation‑induced cytotoxicity in cardiomyocytes by targeting the HIF‑1α‑GSK3β‑mPTP axis. Mol Med Rep 2019; 19:5335-5344. [PMID: 31059047 PMCID: PMC6522876 DOI: 10.3892/mmr.2019.10197] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 04/03/2019] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRs) have been identified as critical regulatory molecules in myocardial ischemia/reperfusion injury; however, the exact expression profile of miR-199a-5p in reperfusion injury and the underlying pathogenic mechanisms remain unclear. In the present study, it was revealed that miR-199a-5p expression was significantly increased in the plasma of patients with acute myocardial infarction and in a H9c2 cell model of oxygen-glucose deprivation and reperfusion (OGD/R) via reverse transcription-quantitative PCR. H9c2 cells were transfected with miR-199a-5p mimic or inhibitor, or short interfering RNA (siRNA) specific to hypoxia-inducible factor-1α (HIF-1α). MTS, lactate dehydrogenase (LDH), TUNEL staining and flow cytometry assays were performed to determine the proliferation, LDH activity, apoptosis and mitochondrial membrane potential (ΔΨm) of H9c2 cells, respectively. The overexpression of miR-199a-5p in the OGD/R cell model significantly decreased the viability and increased the lactate dehydrogenase leakage of cells; whereas knockdown of miR-199-5p induced the opposing effects. Additionally, inhibition of miR-199-5p significantly attenuated OGD/R-induced alterations to the mitochondrial transmembrane potential (ΔΨm) and increases in the apoptosis of cells. Furthermore, the overexpression or knockdown of miR-199a-5p decreased or increased the expression of HIF-1α and phosphorylation of glycogen synthase kinase 3β (GSK3β) in OGD/R-treated H9c2 cells. Additionally, siRNA-mediated downregulation of HIF-1α decreased phosphorylated (p)-GSK3β (Ser9) levels and reversed the protective effects of miR-199a-5p inhibition on OGD/R-injured H9c2 cells. Similarly, treatment with LiCl (a specific inhibitor of p-GSK3β) also attenuated the protective effects of miR-199a-5p knockdown on OGD/R-injured H9c2 cells. Mechanistic studies revealed that HIF-1α was a target of miR-199a-5p, and that HIF-1α downregulation suppressed the expression of p-GSK3β in OGD/R-injured H9c2 cells. Furthermore, an miR-199a-5p inhibitor increased the interaction between p-GSK3β and adenine nucleotide transferase (ANT), which was decreased by OGD/R. Additionally, miR-199a-5p inhibitor reduced the OGD/R-induced interaction between ANT and cyclophilin D (Cyp-D), potentially leading to the increased mitochondrial membrane potential in inhibitor-transfected OGD/R-injured H9c2 cells. Collectively, the present study identified a novel regulatory pathway in which the upregulation of miR-199a-5p reduced the expression of HIF-1α and p-GSK3β, and potentially suppresses the interaction between p-GSK3β and ANT, thus promoting the interaction between ANT and Cyp-D and potentially inducing cytotoxicity in OGD/R-injured H9c2 cells.
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Affiliation(s)
- Da-Wei Liu
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Ya-Nan Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Hai-Juan Hu
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Pu-Qiang Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Wei Cui
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
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