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Jiang Y, Liu P, Li H, Fan D, Huang Y, Zhou M, Yang T. A novel theranostic strategy for myocardial infarction through neutralization of endogenous SO 2 using an endoplasmic reticulum-targeted fluorescent probe. Eur J Med Chem 2024; 277:116778. [PMID: 39151274 DOI: 10.1016/j.ejmech.2024.116778] [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: 04/15/2024] [Revised: 08/12/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024]
Abstract
Myocardial infarction (MI), one of the leading causes of death worldwide, urgently needs further understanding of the pathological process and effective therapies. SO2 in endoplasmic reticulum in several cardiovascular diseases has been reported to be particularly important. However, the role of endogenous SO2 in endoplasmic reticulum in treating myocardial infarction is still ambiguous and needs to be elucidated. Herein, we developed TPA-HI-SO2 as the first endoplasmic reticulum-targeting fluorescent agent for specific imaging and detection of sulfur dioxide derivatives both in vitro and in vivo. TPA-HI-SO2 shows a highly sensitive and selective response to SO2 derivatives over other anions in aqueous solution with a satisfactory response time and detection limit. Furthermore, TPA-HI-SO2 decreased the SO2 concentration in H9C2 cells treated with H2O2 and in an MI mouse model. Most importantly, TPA-HI-SO2 protects H9C2 cells from H2O2-induced apoptosis and obviously protects against myocardial infarction in vivo through neutralization of endogenous SO2. Taken together, we developed the first ER-targeting ratiometric fluorescent probe for endogenous SO2 with excellent biocompatibility, high selectivity and sensitivity in this paper. More importantly, we demonstrated an obvious increase of the endogenous SO2 concentration in a myocardial infarction mouse model for the first time, which suggests that neutralization of endogenous SO2 in endoplasmic reticulum could be a promising therapeutic strategy for myocardial infarction.
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Affiliation(s)
- Yunhan Jiang
- Department of Cardiovascular Surgery, and Laboratory of Human Diseases and Immunotherapies, West China Hospital, Sichuan University, Chengdu, 610041, China; Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Pingxian Liu
- Department of Cardiovascular Surgery, and Laboratory of Human Diseases and Immunotherapies, West China Hospital, Sichuan University, Chengdu, 610041, China; Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Huidong Li
- Research Center for Advanced Computation, School of Science, Xihua University, Chengdu, 610041, China
| | - Dongmei Fan
- Department of Cardiovascular Surgery, and Laboratory of Human Diseases and Immunotherapies, West China Hospital, Sichuan University, Chengdu, 610041, China; Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yukun Huang
- School of Food and Bioengineering, Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, China
| | - Meng Zhou
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China
| | - Tao Yang
- Department of Cardiovascular Surgery, and Laboratory of Human Diseases and Immunotherapies, West China Hospital, Sichuan University, Chengdu, 610041, China; Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, China.
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2
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Hino C, Chan G, Jordaan G, Chang SS, Saunders JT, Bashir MT, Hansen JE, Gera J, Weisbart RH, Nishimura RN. Cellular protection from H 2O 2 toxicity by Fv-Hsp70: protection via catalase and gamma-glutamyl-cysteine synthase. Cell Stress Chaperones 2023; 28:429-439. [PMID: 37171750 PMCID: PMC10352194 DOI: 10.1007/s12192-023-01349-6] [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: 02/24/2023] [Revised: 04/19/2023] [Accepted: 04/23/2023] [Indexed: 05/13/2023] Open
Abstract
Heat shock proteins (HSPs), especially Hsp70 (HSPA1), have been associated with cellular protection from various cellular stresses including heat, hypoxia-ischemia, neurodegeneration, toxins, and trauma. Endogenous HSPs are often synthesized in direct response to these stresses but in many situations are inadequate in protecting cells. The present study addresses the transduction of Hsp70 into cells providing protection from acute oxidative stress by H2O2. The recombinant Fv-Hsp70 protein and two mutant Fv-Hsp70 proteins minus the ATPase domain and minus the ATPase and terminal lid domains were tested at 0.5 and 1.0 μM concentrations after two different concentrations of H2O2 treatment. All three recombinant proteins protected SH-SY5Y cells from acute H2O2 toxicity. This data indicated that the protein binding domain was responsible for cellular protection. In addition, experiments pretreating cells with inhibitors of antioxidant proteins catalase and gamma-glutamylcysteine synthase (GGCS) before H2O2 resulted in cell death despite treatment with Fv-Hsp70, implying that both enzymes were protected from acute oxidative stress after treatment with Fv-Hsp70. This study demonstrates that Fv-Hsp70 is protective in our experiments primarily by the protein-binding domain. The Hsp70 terminal lid domain was also not necessary for protection.
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Affiliation(s)
- Chris Hino
- Dept. of Internal Medicine, Loma Linda School of Medicine, Loma Linda, CA, 92350, USA
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
| | - Grace Chan
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
| | - Gwen Jordaan
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
| | - Sophia S Chang
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
| | - Jacquelyn T Saunders
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
| | - Mohammad T Bashir
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
- Dept. of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095, USA
| | - James E Hansen
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
- Dept. of Therapeutic Radiology, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Joseph Gera
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
- Dept. of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095, USA
| | - Richard H Weisbart
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA
- Dept. of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095, USA
| | - Robert N Nishimura
- VA Greater Los Angeles Healthcare System, North Hills, Los Angeles, CA, 91343, USA.
- Dept. of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095, USA.
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Wang YC, Wang H, Shao CL, Li XY, Cui J, Guo HD. Screening and identification of effective components from modified Taohong Siwu decoction for protecting H9c2 cells from damage. In Vitro Cell Dev Biol Anim 2023:10.1007/s11626-023-00773-3. [PMID: 37294373 DOI: 10.1007/s11626-023-00773-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/26/2023] [Indexed: 06/10/2023]
Abstract
We found that modified Taohong Siwu decoction (MTHSWD) had cardioprotective effects after myocardial ischemia-reperfusion injury. This study was to screen the effective components of MTHSWD that have protective effects on H9c2 cell injury through H2O2 injury model. Fifty-three active components were screened by CCK8 assay to detect cell viability. The anti-oxidative stress ability was evaluated by detecting the levels of total superoxide dismutase (SOD) and malondialdehyde (MDA) in cells. The anti-apoptotic effect was determined by terminal deoxynucleotidyl transferase-mediated dUTP nick-end-labeling (TUNEL). Finally, the phosphorylation levels of ERK, AKT, and P38MAPK were detected by WB (Western blot) to study the protective mechanism of effective monomers against H9c2 cell injury. Among the 53 active ingredients of MTHSWD, ginsenoside Rb3, levistilide A, ursolic acid, tanshinone I, danshensu, dihydrotanshinone I, and astragaloside I could significantly increase the viability of H9c2 cells. The results of SOD and MDA showed that ginsenoside Rb3, tanshinone I, danshensu, dihydrotanshinone I, and tanshinone IIA could significantly reduce the content of lipid peroxide in cells. TUNEL results showed that ginsenoside Rb3, tanshinone I, danshensu, dihydrotanshinone I, and tanshinone IIA reduced apoptosis to varying degrees. The tanshinone IIA, ginsenoside Rb3, dihydrotanshinone I, and tanshinone I reduced the phosphorylation levels of P38MAPK and ERK in H9c2 cells induced by H2O2, and the phosphorylation level of ERK was also significantly reduced by danshensu. At the same time, tanshinone IIA, ginsenoside Rb3, dihydrotanshinone I, tanshinone I, and danshensu significantly increased AKT phosphorylation level in H9c2 cells. In conclusion, the effective ingredients in MTHSWD provide basic basis and experimental reference for the prevention and treatment of cardiovascular diseases.
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Affiliation(s)
- Ya-Chao Wang
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huan Wang
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chang-le Shao
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiu-Ya Li
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Ji Cui
- School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Hai-Dong Guo
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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4
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Design, synthesis, and in vitro protective effect evaluation of α-carboline derivatives against H2O2-induced cardiomyocyte injury. Eur J Med Chem 2022; 238:114469. [DOI: 10.1016/j.ejmech.2022.114469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/06/2022] [Accepted: 05/15/2022] [Indexed: 12/23/2022]
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5
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Zhang H, Zhang RH, Liao XM, Yang D, Wang YC, Zhao YL, Xu GB, Liu CH, Li YJ, Liao SG, Zhou M. Discovery of β-Carboline Derivatives as a Highly Potent Cardioprotectant against Myocardial Ischemia-Reperfusion Injury. J Med Chem 2021; 64:9166-9181. [PMID: 34132541 DOI: 10.1021/acs.jmedchem.1c00384] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Timely myocardial reperfusion salvages ischemic myocardium from infarction, whereas reperfusion itself induces cardiomyocyte death, which is called myocardial ischemia/reperfusion (MI/R) injury. Herein, β-carboline derivative 17c was designed and synthesized with obvious myocardial protective activity for the first time. Pretreatment of 17c effectively protected the cardiomyocyte H9c2 cells from H2O2-induced lactate dehydrogenase leakage and restored the endogenous antioxidants, superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px). Besides, 17c effectively protected the mitochondria through decreasing the reactive oxygen species overproduction and enhancing the mitochondrial membrane potential. As a result, 17c significantly reduced the necrosis of cardiomyocytes in H2O2-induced oxidative stress, which was more potent than polydatin. In MI/R injury rats, 17c pretreatment obviously increased the levels of SOD and GSH-Px and inhibited the apoptosis of cardiomyocytes. Through this way, the size of myocardial infarction was significantly reduced after MI/R injury in vivo, better than that of polydatin, suggesting that 17c is a promising cardioprotectant for the prevention of MI/R injury.
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Affiliation(s)
- Hong Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang 550004, P. R. China.,School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Rong-Hong Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang 550004, P. R. China.,Center for Tissue Engineering and Stem Cell Research, Key Laboratory of Regenerative Medicine of Guizhou Province, Guizhou Medical University, Guiyang 550004, P. R. China
| | - Xiang-Ming Liao
- School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Dan Yang
- School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Yu-Chan Wang
- School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Yong-Long Zhao
- School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Guo-Bo Xu
- School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Chun-Hua Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang 550004, P. R. China.,School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Yong-Jun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang 550004, P. R. China.,School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Shang-Gao Liao
- School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
| | - Meng Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang 550004, P. R. China.,School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
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Fang H, Kang L, Abbas Z, Hu L, Chen Y, Tan X, Wang Y, Xu Q. Identification of key Genes and Pathways Associated With Thermal Stress in Peripheral Blood Mononuclear Cells of Holstein Dairy Cattle. Front Genet 2021; 12:662080. [PMID: 34178029 PMCID: PMC8222911 DOI: 10.3389/fgene.2021.662080] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 05/10/2021] [Indexed: 12/30/2022] Open
Abstract
The objectives of the present study were to identify key genes and biological pathways associated with thermal stress in Chinese Holstein dairy cattle. Hence, we constructed a cell-model, applied various molecular biology experimental techniques and bioinformatics analysis. A total of 55 candidate genes were screened from published literature and the IPA database to examine its regulation under cold (25°C) or heat (42°C) stress in PBMCs. We identified 29 (3 up-regulated and 26 down-regulated) and 41 (15 up-regulated and 26 down-regulated) significantly differentially expressed genes (DEGs) (fold change ≥ 1.2-fold and P < 0.05) after cold and heat stress treatments, respectively. Furthermore, bioinformatics analyses confirmed that major biological processes and pathways associated with thermal stress include protein folding and refolding, protein phosphorylation, transcription factor binding, immune effector process, negative regulation of cell proliferation, autophagy, apoptosis, protein processing in endoplasmic reticulum, estrogen signaling pathway, pathways related to cancer, PI3K- Akt signaling pathway, and MAPK signaling pathway. Based on validation at the cellular and individual levels, the mRNA expression of the HIF1A gene showed upregulation during cold stress and the EIF2A, HSPA1A, HSP90AA1, and HSF1 genes showed downregulation after heat exposure. The RT-qPCR and western blot results revealed that the HIF1A after cold stress and the EIF2A, HSPA1A, HSP90AA1, and HSF1 after heat stress had consistent trend changes at the cellular transcription and translation levels, suggesting as key genes associated with thermal stress response in Holstein dairy cattle. The cellular model established in this study with PBMCs provides a suitable platform to improve our understanding of thermal stress in dairy cattle. Moreover, this study provides an opportunity to develop simultaneously both high-yielding and thermotolerant Chinese Holstein cattle through marker-assisted selection.
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Affiliation(s)
- Hao Fang
- Institute of Life Sciences and Bio-Engineering, Beijing Jiaotong University, Beijing, China
| | - Ling Kang
- Institute of Life Sciences and Bio-Engineering, Beijing Jiaotong University, Beijing, China
| | - Zaheer Abbas
- Institute of Life Sciences and Bio-Engineering, Beijing Jiaotong University, Beijing, China
| | - Lirong Hu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, National Engineering Laboratory for Animal Breeding, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yumei Chen
- Institute of Life Sciences and Bio-Engineering, Beijing Jiaotong University, Beijing, China
| | - Xiao Tan
- Institute of Life Sciences and Bio-Engineering, Beijing Jiaotong University, Beijing, China
| | - Yachun Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, National Engineering Laboratory for Animal Breeding, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qing Xu
- Institute of Life Sciences and Bio-Engineering, Beijing Jiaotong University, Beijing, China
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7
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Eskla KL, Porosk R, Reimets R, Visnapuu T, Vasar E, Hundahl CA, Luuk H. Hypothermia augments stress response in mammalian cells. Free Radic Biol Med 2018; 121:157-168. [PMID: 29704622 DOI: 10.1016/j.freeradbiomed.2018.04.571] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 04/16/2018] [Accepted: 04/22/2018] [Indexed: 12/22/2022]
Abstract
Mild hypothermia (32 °C) is routinely used in medical practice to alleviate hypoxic ischemic damage, however, the mechanisms that underlie its protective effects remain uncertain. Using a systems approach based on genome-wide expression screens, reporter assays and biochemical studies, we find that cellular hypothermia response is associated with the augmentation of major stress-inducible transcription factors Nrf2 and HIF1Α affecting the antioxidant system and hypoxia response pathways, respectively. At the same time, NF-κB, a transcription factor involved in the control of immune and inflammatory responses, was not induced by hypothermia. Furthermore, mild hypothermia did not trigger unfolded protein response. Lower temperatures (27 °C and 22 °C) did not activate Nrf2 and HIF1A pathways as efficiently as mild hypothermia. Current findings are discussed in the context of the thermodynamic hypothesis of therapeutic hypothermia. We argue that the therapeutic effects are likely to stem both from metabolic suppression (inhibitory component) and augmentation of stress tolerance (activating component). We argue that systems coping with cellular stressors are plausible targets of therapeutic hypothermia and deserve more attention in clinical hypothermia research.
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Affiliation(s)
- Kattri-Liis Eskla
- Institute of Biomedicine and Translational Medicine, Department of Physiology, University of Tartu, Tartu, Estonia.
| | - Rando Porosk
- Institute of Biomedicine and Translational Medicine, Department of Biochemistry, University of Tartu, Tartu, Estonia
| | - Riin Reimets
- Institute of Biomedicine and Translational Medicine, Department of Physiology, University of Tartu, Tartu, Estonia
| | - Tanel Visnapuu
- Institute of Biomedicine and Translational Medicine, Department of Physiology, University of Tartu, Tartu, Estonia
| | - Eero Vasar
- Institute of Biomedicine and Translational Medicine, Department of Physiology, University of Tartu, Tartu, Estonia; Centre of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Christian Ansgar Hundahl
- Institute of Biomedicine and Translational Medicine, Department of Physiology, University of Tartu, Tartu, Estonia
| | - Hendrik Luuk
- Institute of Biomedicine and Translational Medicine, Department of Physiology, University of Tartu, Tartu, Estonia; Centre of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
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8
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Qiu L, Chen J, Lin J, Wo D, Chu J, Peng J. Baicalin alleviates H2O2-induced injury of H9c2 cardiomyocytes through suppression of the Wnt/β-catenin signaling pathway. Mol Med Rep 2017; 16:9251-9255. [DOI: 10.3892/mmr.2017.7748] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 09/06/2017] [Indexed: 11/06/2022] Open
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Luteolin Prevents H2O2-Induced Apoptosis in H9C2 Cells through Modulating Akt-P53/Mdm2 Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5125836. [PMID: 27525270 PMCID: PMC4976196 DOI: 10.1155/2016/5125836] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/31/2016] [Indexed: 11/26/2022]
Abstract
Introduction. Luteolin, a falconoid compound in many Chinese herbs and formula, plays important roles in cardiovascular diseases. The underlying mechanism of luteolin remains to be further elaborated. Methods. A model of hydrogen peroxide- (H2O2-) induced H9C2 cells apoptosis was established. Cell viabilities were examined with an MTT assay. 2′,7′-Dichlorofluorescin diacetate (DCFH-DA) and flow cytometry were used to detect ROS level and apoptosis rate, respectively. The expressions of signaling proteins related to apoptosis were analyzed by western blot and mRNA levels were detected by real-time polymerase chain reaction (PCR). Quercetin was applied as positive drug. Results. Incubation with various concentrations of H2O2 (0, 50, 100, and 200 μM) for 1 h caused dose-dependent loss of cell viability and 100 μM H2O2 reduced the cell viability to approximately 50%. Treatments with luteolin and quercetin protected cells from H2O2-induced cytotoxicity and reduced cellular ROS level and apoptosis rate. Moreover, luteolin could downregulate the expressions of Bax, caspase-8, cleaved-caspase-3, and p53 in apoptotic signaling pathway. Further study showed that the expressions of Akt, Bcl-2, and Mdm2 were upregulated by luteolin. Conclusion. Luteolin protects H9C2 cells from H2O2-induced apoptosis. The protective and antiapoptotic effects of luteolin could be mediated by regulating the Akt-P53/Mdm2 apoptotic pathway.
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Li B, Chi RF, Qin FZ, Guo XF. Distinct changes of myocyte autophagy during myocardial hypertrophy and heart failure: association with oxidative stress. Exp Physiol 2016; 101:1050-63. [PMID: 27219474 DOI: 10.1113/ep085586] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 05/19/2016] [Indexed: 01/04/2023]
Abstract
NEW FINDINGS What is the central question of this study? We investigated the changes of myocyte autophagy during the stages of myocardial hypertrophy and failure and the relationship between autophagy and oxidative stress. What is the main findings and its importance? Myocyte autophagy is reduced during myocardial hypertrophy and increased during heart failure. Reduced autophagy is correlated with myocyte hypertrophy, and increased autophagy is correlated with myocyte apoptosis. The distinct alterations are associated with oxidative stress. Hydrogen peroxide causes distinct, concentration-dependent changes in autophagy in cultured cardiomyocytes. Oxidative stress may mediate the distinct alterations of myocyte autophagy during cardiac hypertrophy and failure. Myocyte autophagy occurs at basal levels in the heart in normal conditions and increases in heart failure. However, the changes of myocyte autophagy during the stages of myocardial hypertrophy and failure are not fully understood. Little is known about the relationship among myocyte autophagy, hypertrophy, apoptosis and oxidative stress. In the present study, we first examined the changes of myocyte autophagy in mice with chronic pressure overload and the relationships between myocyte autophagy and hypertrophy, apoptosis and oxidative stress. Second, we determined the direct role of hydrogen peroxide on autophagy in cultured cardiomyocytes. Eight-week-old male C57BL/6J mice underwent transverse aortic constriction (TAC) or sham operation. In TAC mice, left ventricular wall thickness was increased at 1 week and increased further at 9 weeks. Left ventricular end-diastolic dimension showed no change at 1 week, but increased at 9 weeks in association with systolic dysfunction. Myocyte autophagy was decreased at 1 week after TAC, and the decrease was correlated with increased myocyte size. Myocyte autophagy was increased at 9 weeks after TAC, and the increase was correlated with increased myocyte apoptosis. The alterations in autophagy after TAC were associated with myocardial oxidative stress. Hydrogen peroxide caused distinct, concentration-dependent changes in autophagy in cultured cardiomyocytes. In conclusion, myocyte autophagy was decreased during myocardial hypertrophy and increased during heart failure. The distinct changes were associated with myocyte hypertrophy, apoptosis and oxidative stress. These findings suggest that oxidative stress may mediate the distinct alterations of myocyte autophagy during myocardial hypertrophy and heart failure.
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Affiliation(s)
- Bao Li
- The Affiliated Cardiovascular Hospital of Shanxi Medical University, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Hospital, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Institute, Taiyuan, 030024, Shanxi, PR China
| | - Rui-Fang Chi
- The Affiliated Cardiovascular Hospital of Shanxi Medical University, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Hospital, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Institute, Taiyuan, 030024, Shanxi, PR China.,Shanxi Medical University, Taiyuan, 030001, Shanxi, PR China
| | - Fu-Zhong Qin
- The Affiliated Cardiovascular Hospital of Shanxi Medical University, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Hospital, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Institute, Taiyuan, 030024, Shanxi, PR China.,Shanxi Medical University, Taiyuan, 030001, Shanxi, PR China
| | - Xiao-Fei Guo
- The Affiliated Cardiovascular Hospital of Shanxi Medical University, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Hospital, Taiyuan, 030024, Shanxi, PR China.,Shanxi Province Cardiovascular Institute, Taiyuan, 030024, Shanxi, PR China.,Shanxi Medical University, Taiyuan, 030001, Shanxi, PR China
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11
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Zhang J, Xue X, Xu Y, Zhang Y, Li Z, Wang H. The transcriptome responses of cardiomyocyte exposed to hypothermia. Cryobiology 2016; 72:244-50. [DOI: 10.1016/j.cryobiol.2016.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 03/07/2016] [Accepted: 03/28/2016] [Indexed: 11/26/2022]
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12
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Zhou JM, Xu ZL, Li N, Zhao YW, Wang ZZ, Xiao W. Identification of cardioprotective agents from traditional Chinese medicine against oxidative damage. Mol Med Rep 2016; 14:77-88. [PMID: 27176126 PMCID: PMC4918535 DOI: 10.3892/mmr.2016.5243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 02/23/2016] [Indexed: 01/18/2023] Open
Abstract
Reactive oxygen species are damaging to cardiomyocytes. H9c2 cardiomyocytes are commonly used to study the cellular mechanisms and signal transduction in cardiomyocytes, and to evaluate the cardioprotective effects of drugs following oxidative damage. The present study developed a robust, automated high throughput screening (HTS) assay to identify cardioprotective agents from a traditional Chinese medicine (TCM) library using a H2O2-induced oxidative damage model in H9c2 cells. Using this HTS format, several hits were identified as cardioprotective by detecting changes to cell viability using the cell counting kit (CCK)-8 assay. Two TCM extracts, KY-0520 and KY-0538, were further investigated. The results of the present study demonstrated that treatment of oxidatively damaged cells with KY-0520 or KY-0538 markedly increased the cell viability and superoxide dismutase activity, decreased lactate dehydrogenase activity and malondialdehyde levels, and inhibited early growth response-1 (Egr-1) protein expression. The present study also demonstrated that KY-0520 or KY-0538 treatment protected H9c2 cells from H2O2-induced apoptosis by altering the Bcl-2/Bax protein expression ratio, and decreasing the levels of cleaved caspase-3. In addition, KY-0520 and KY-0538 reduced the phosphorylation of ERK1/2 and p38-MAPK proteins, and inhibited the translocation of Egr-1 from the cytoplasm to nucleus in H2O2-treated H9c2 cells. These findings suggested that oxidatively damaged H9c2 cells can be used for the identification of cardioprotective agents that reduce oxidative stress by measuring cell viabilities using CCK-8 in an HTS format. The underlying mechanism of the cardioprotective activities of KY-0520 and KY-0538 may be attributed to their antioxidative activity, regulation of Egr-1 and apoptosis-associated proteins, and the inhibition of ERK1/2, p38-MAPK and Egr-1 signaling pathways.
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Affiliation(s)
- Jian-Ming Zhou
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Modern Traditional Chinese Medicine Research Institute, Lianyungang, Jiangsu 222001, P.R. China
| | - Zhi-Liang Xu
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Modern Traditional Chinese Medicine Research Institute, Lianyungang, Jiangsu 222001, P.R. China
| | - Na Li
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Modern Traditional Chinese Medicine Research Institute, Lianyungang, Jiangsu 222001, P.R. China
| | - Yi-Wu Zhao
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Modern Traditional Chinese Medicine Research Institute, Lianyungang, Jiangsu 222001, P.R. China
| | - Zhen-Zhong Wang
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Modern Traditional Chinese Medicine Research Institute, Lianyungang, Jiangsu 222001, P.R. China
| | - Wei Xiao
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Modern Traditional Chinese Medicine Research Institute, Lianyungang, Jiangsu 222001, P.R. China
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Jia K, Sun D, Ling S, Tian Y, Yang X, Sui J, Tang B, Wang L. Activated δ‑opioid receptors inhibit hydrogen peroxide‑induced apoptosis in liver cancer cells through the PKC/ERK signaling pathway. Mol Med Rep 2014; 10:839-47. [PMID: 24912447 DOI: 10.3892/mmr.2014.2301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 04/14/2014] [Indexed: 11/06/2022] Open
Abstract
Apoptotic liver cancer cells have important roles in liver tumorigenesis and liver cancer progression. Recent studies have shown that δ‑opioid receptors are highly expressed in human liver and liver cancer cells. The present study aimed to investigate the role of activated δ‑opioid receptors on human liver cancer cell apoptosis and its interrelation with the mitochondria and the protein kinase C/extracellular‑signal‑regulated kinase (PKC/ERK) signaling pathway. H2O2 was used to induce apoptosis in human liver cancer cells. During apoptosis, mitochondrial transmembrane potentials were observed to decrease, cytochrome c expression was found to increase and B cell lymphoma 2 (Bcl‑2) expression decreased. These findings suggested that H2O2‑induced apoptosis was mediated through the mitochondrial pathway. Of note, activated δ‑opioid receptors were observed to inhibit H2O2‑induced apoptosis in human liver cancer cells. Following δ‑opioid receptor activation, the number of apoptotic liver cancer cells decreased, mitochondrial transmembrane potentials were restored, cytoplasmic cytochrome c and Bcl‑2‑associated X protein expression decreased and Bcl‑2 expression increased. These data suggested that δ‑opioid receptor activation inhibited mitochondria‑mediated apoptosis. In addition, activation of δ‑opioid receptors was observed to increase the expression of PKC and ERK in human liver cancer cells. Furthermore, upon inhibition of the PKC/ERK signaling pathway, the protective effect associated with the δ‑opioid receptor on liver cancer cell apoptosis was inhibited, which was not associated with the status of δ‑opioid receptor activation. These findings suggested that the PKC/ERK signaling pathway has an important role in δ‑opioid receptor‑mediated inhibition of apoptosis in human liver cancer cells.
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Affiliation(s)
- Kaiqi Jia
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Deguang Sun
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Sunbin Ling
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Yu Tian
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Xuejun Yang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Jidong Sui
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Bo Tang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Liming Wang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
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Wang HS, Han JS. Research progress on combat trauma treatment in cold regions. Mil Med Res 2014; 1:8. [PMID: 25722866 PMCID: PMC4340833 DOI: 10.1186/2054-9369-1-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 04/17/2014] [Indexed: 12/29/2022] Open
Abstract
Cold regions are a special combat environment in which low temperatures have a great impact on human metabolism and other vital functions, including the nervous, motion, cardiovascular, circulatory, respiratory, and urinary systems; consequently, low temperatures often aggravate existing trauma, leading to high mortality rates if rapid and appropriate treatment is not provided. Hypothermia is an independent risk factor of fatality following combat trauma; therefore, proactive preventative measures are needed to reduce the rate of mortality. After summarizing the basic research on battlefield environments and progress in the prevention and treatment of trauma, this article concludes that current treatment and prevention measures for combat trauma in cold regions are inadequate. Future molecular biology studies are needed to elucidate the mechanisms and relevant cell factors underlying bodily injury caused by cold environment, a research goal will also allow further exploration of corresponding treatments.
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Affiliation(s)
- Hui-Shan Wang
- Department of Cardiovascular Surgery, General Hospital of Shenyang Military Command, Shenyang, 110016 China
| | - Jin-Song Han
- Department of Cardiovascular Surgery, General Hospital of Shenyang Military Command, Shenyang, 110016 China
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Oxidative stress and antioxidant activity in hypothermia and rewarming: can RONS modulate the beneficial effects of therapeutic hypothermia? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:957054. [PMID: 24363826 PMCID: PMC3865646 DOI: 10.1155/2013/957054] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 10/21/2013] [Indexed: 12/12/2022]
Abstract
Hypothermia is a condition in which core temperature drops below the level necessary to maintain bodily functions. The decrease in temperature may disrupt some physiological systems of the body, including alterations in microcirculation and reduction of oxygen supply to tissues. The lack of oxygen can induce the generation of reactive oxygen and nitrogen free radicals (RONS), followed by oxidative stress, and finally, apoptosis and/or necrosis. Furthermore, since the hypothermia is inevitably followed by a rewarming process, we should also consider its effects. Despite hypothermia and rewarming inducing injury, many benefits of hypothermia have been demonstrated when used to preserve brain, cardiac, hepatic, and intestinal function against ischemic injury. This review gives an overview of the effects of hypothermia and rewarming on the oxidant/antioxidant balance and provides hypothesis for the role of reactive oxygen species in therapeutic hypothermia.
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Chang W, Zhang M, Li J, Meng Z, Wei S, Du H, Chen L, Hatch GM. Berberine improves insulin resistance in cardiomyocytes via activation of 5'-adenosine monophosphate-activated protein kinase. Metabolism 2013; 62:1159-67. [PMID: 23537779 DOI: 10.1016/j.metabol.2013.02.007] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 02/11/2013] [Accepted: 02/19/2013] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Insulin resistance plays an important role in the pathogenesis of diabetic cardiomyopathy. Berberine (BBR) is a plant alkaloid which promotes hypoglycemia via increasing insulin sensitivity in peripheral tissues. Little is known of BBR's role in regulating glucose metabolism in heart. MATERIALS/METHODS We examined the effect and mechanism of BBR on glucose consumption and glucose uptake in insulin sensitive or insulin resistant rat H9c2 cardiomyocyte cells. H9c2 myoblast cells were differentiated into cardiomyocytes and incubated with insulin for 24h to induce insulin resistance. RESULTS BBR-treatment of H9c2 cells increased glucose consumption and glucose uptake compared to controls. In addition, BBR-treatment attenuated the reduction in glucose consumption and glucose uptake in insulin resistant H9c2 cells. Compound C, an inhibitor of AMP-activated protein kinase (AMPK), abolished the enhancement of glucose consumption and glucose uptake mediated by BBR in both insulin sensitive and insulin resistant H9c2 cells compared to controls. CONCLUSION BBR significantly increased AMPK activity, but had little effect on the activity of protein kinase B (AKT) in insulin resistant H9c2 cells, suggesting that berberine improves insulin resistance in H9c2 cardiomyocytes at least in part via stimulation of AMPK activity.
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Affiliation(s)
- Wenguang Chang
- Department of Pharmacology, Norman Bethune Medical College, Jilin University, Changchun 130021, China
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17
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Chiou SY, Lee YS, Jeng MJ, Tsao PC, Soong WJ. Moderate hypothermia attenuates oxidative stress injuries in alveolar epithelial A549 cells. Exp Lung Res 2013; 39:217-28. [PMID: 23647088 DOI: 10.3109/01902148.2013.792881] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Reactive oxygen species (ROS) are generally involved in lung inflammation and acute lung injury. We investigated the effects of hypothermia on ROS-induced cell damage in human alveolar type II cells. A549 cells were exposed to H2O2 and cultured at different temperatures, namely, normthermia (37°C), mild hypothermia (34°C), or moderate hypothermia (32°C). Cell damage was measured using various assays. The biochemical studies demonstrated a significant increase in apoptosis and intracellular ROS at 32°C in uninjured A549 cells. After exposure to H2O2, a marked decrease in cell viability (<50%) was demonstrated, and this was significantly ameliorated upon culture at 32°C. Significantly intracellular damage was found to affect the 24-hour H2O2-exposed cells in 37°C (P < .05), including an increase in apoptosis and necrosis, intracellular ROS, caspase-3 activity, HMGB1 protein expression, and some alterations to the cell cycle. On hypothermic treatment, the 24-hour H2O2-induced caspase-3 activation was significantly suppressed in cells cultured at both 32°C and 34°C (P < .05 versus 37°C). The cell cycle changes in 24-hour H2O2-exposed cells were significantly diminished when the cells were cultured in 32°C (P < .05 versus 37°C). However, these intracellular alterations were not seen in 6-hour H2O2-exposed cells. We concluded that moderate hypothermia (32°C) of alveolar epithelial A549 cells seems to provide protection against H2O2-induced 24-hour oxidative stress by attenuating cell death and intracellular damage. However, moderate hypothermia might cause minor damage to uninjured cells, so the use of hypothermic treatment needs to be judiciously applied.
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Affiliation(s)
- Shr-Yun Chiou
- Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
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18
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ZHOU TIANEN, JIANG JUN, ZHANG MENG, FU YUE, YANG ZHENGFEI, JIANG LONGYUAN. Protective effect of mild hypothermia on oxygen-glucose deprivation injury in rat hippocampal neurons after hypoxia. Mol Med Rep 2013; 7:1859-64. [DOI: 10.3892/mmr.2013.1410] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 03/18/2013] [Indexed: 11/06/2022] Open
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Effect of cerium oxide nanoparticles to inflammation and oxidative DNA damages in H9c2 cells. Mol Cell Toxicol 2012. [DOI: 10.1007/s13273-012-0033-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Zhao H, Dobrucki J, Rybak P, Traganos F, Dorota Halicka H, Darzynkiewicz Z. Induction of DNA damage signaling by oxidative stress in relation to DNA replication as detected using "click chemistry". Cytometry A 2011; 79:897-902. [PMID: 21905210 DOI: 10.1002/cyto.a.21137] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 07/22/2011] [Accepted: 08/08/2011] [Indexed: 12/17/2022]
Abstract
Induction of DNA damage by oxidants such as H(2) O(2) activates the complex network of DNA damage response (DDR) pathways present in cells to initiate DNA repair, halt cell cycle progression, and prepare an apoptotic reaction. We have previously reported that activation of Ataxia Telangiectasia Mutated protein kinase (ATM) and induction of γH2AX are among the early events of the DDR induced by exposure of cells to H(2) O(2) , and in human pulmonary carcinoma A549 cells, both events were expressed predominantly during S-phase. This study was designed to further explore a correlation between these events and DNA replication. Toward this end, we utilized 5-ethynyl-2'deoxyuridine (EdU) and the "click chemistry" approach to label DNA during replication, followed by exposure of A549 cells to H(2) O(2) . Multiparameter laser scanning cytometric analysis of these cells made it possible to identify DNA replicating cells and directly correlate H(2) O(2) -induced ATM activation and induction of γH2AX with DNA replication on a cell by cell basis. After pulse-labeling with EdU and exposure to H(2) O(2) , confocal microscopy was also used to examine the localization of DNA replication sites ("replication factories") versus the H2AX phosphorylation sites (γH2AX foci) in nuclear chromatin in an attempt to observe the absence or presence of colocalization. The data indicate a close association between DNA replication and H2AX phosphorylation in A549 cells, suggesting that these DNA damage response events may be triggered by stalled replication forks and perhaps also by induction of DNA double-strand breaks at the primary DNA lesions induced by H(2) O(2) .
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Affiliation(s)
- Hong Zhao
- Department of Pathology, New York Medical College, Valhalla, NY 10595, USA
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