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Kutschka I, Bertero E, Wasmus C, Xiao K, Yang L, Chen X, Oshima Y, Fischer M, Erk M, Arslan B, Alhasan L, Grosser D, Ermer KJ, Nickel A, Kohlhaas M, Eberl H, Rebs S, Streckfuss-Bömeke K, Schmitz W, Rehling P, Thum T, Higuchi T, Rabinowitz J, Maack C, Dudek J. Activation of the integrated stress response rewires cardiac metabolism in Barth syndrome. Basic Res Cardiol 2023; 118:47. [PMID: 37930434 PMCID: PMC10628049 DOI: 10.1007/s00395-023-01017-x] [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: 02/14/2023] [Revised: 09/29/2023] [Accepted: 10/14/2023] [Indexed: 11/07/2023]
Abstract
Barth Syndrome (BTHS) is an inherited cardiomyopathy caused by defects in the mitochondrial transacylase TAFAZZIN (Taz), required for the synthesis of the phospholipid cardiolipin. BTHS is characterized by heart failure, increased propensity for arrhythmias and a blunted inotropic reserve. Defects in Ca2+-induced Krebs cycle activation contribute to these functional defects, but despite oxidation of pyridine nucleotides, no oxidative stress developed in the heart. Here, we investigated how retrograde signaling pathways orchestrate metabolic rewiring to compensate for mitochondrial defects. In mice with an inducible knockdown (KD) of TAFAZZIN, and in induced pluripotent stem cell-derived cardiac myocytes, mitochondrial uptake and oxidation of fatty acids was strongly decreased, while glucose uptake was increased. Unbiased transcriptomic analyses revealed that the activation of the eIF2α/ATF4 axis of the integrated stress response upregulates one-carbon metabolism, which diverts glycolytic intermediates towards the biosynthesis of serine and fuels the biosynthesis of glutathione. In addition, strong upregulation of the glutamate/cystine antiporter xCT increases cardiac cystine import required for glutathione synthesis. Increased glutamate uptake facilitates anaplerotic replenishment of the Krebs cycle, sustaining energy production and antioxidative pathways. These data indicate that ATF4-driven rewiring of metabolism compensates for defects in mitochondrial uptake of fatty acids to sustain energy production and antioxidation.
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Affiliation(s)
- Ilona Kutschka
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Edoardo Bertero
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
- Department of Internal Medicine, University of Genova, Genoa, Italy
- Cardiovascular Disease Unit, IRCCS Ospedale Policlinico San Martino - Italian IRCCS Cardiology Network, Genoa, Italy
| | - Christina Wasmus
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Ke Xiao
- Institute of Molecular and Translational Therapeutic Strategies, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Straße 1, 30625, Hannover, Germany
| | - Lifeng Yang
- Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, 320 Yueyang Rd, Shanghai, 200031, China
| | - Xinyu Chen
- Department of Nuclear Medicine, University Clinic Würzburg, Oberdürrbacher Strasse 6, 97080, Würzburg, Germany
| | - Yasuhiro Oshima
- Department of Nuclear Medicine, University Clinic Würzburg, Oberdürrbacher Strasse 6, 97080, Würzburg, Germany
| | - Marcus Fischer
- Division of Pediatric Cardiology and Intensive Care, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Manuela Erk
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Berkan Arslan
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Lin Alhasan
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Daria Grosser
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Katharina J Ermer
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Alexander Nickel
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Michael Kohlhaas
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
| | - Hanna Eberl
- Department for Pharmacology and Toxicology, University of Würzburg, Versbacher Strasse 9, 97078, Würzburg, Germany
| | - Sabine Rebs
- Department for Pharmacology and Toxicology, University of Würzburg, Versbacher Strasse 9, 97078, Würzburg, Germany
| | - Katrin Streckfuss-Bömeke
- Department for Pharmacology and Toxicology, University of Würzburg, Versbacher Strasse 9, 97078, Würzburg, Germany
- Clinic for Cardiology and Pneumology, Georg-August University Göttingen and DZHK (German Center for Cardiovascular Research), Partner Site, Göttingen, Germany
| | - Werner Schmitz
- Department of Biochemistry and Molecular Biology, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Peter Rehling
- University Göttingen, Institute of Biochemistry and Molecular Cell Biology, Humboldtallee 23, 37072, Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: From Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Göttingen, Germany
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Straße 1, 30625, Hannover, Germany
- Rebirth Center for Translational Regenerative Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Takahiro Higuchi
- Department of Nuclear Medicine, University Clinic Würzburg, Oberdürrbacher Strasse 6, 97080, Würzburg, Germany
| | - Joshua Rabinowitz
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, 08544, USA
| | - Christoph Maack
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany
- Medical Clinic I, University Clinic Würzburg, Würzburg, Germany
| | - Jan Dudek
- Department of Translational Research, Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Am Schwarzenberg 15, Haus A15, 97078, Würzburg, Germany.
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Katorkin SE, Krivoshchekov EP, Elshin EB, Kushnarchuk MY. Modern possibilities and prospects of conservative treatment of patients with peripheral arterial diseases. AMBULATORNAYA KHIRURGIYA = AMBULATORY SURGERY (RUSSIA) 2022. [DOI: 10.21518/1995-1477-2022-19-2-50-60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The most common clinical manifestation of peripheral arterial disease is intermittent claudication due to insufficient blood supply to the affected limb. The article summarizes and systematizes the latest achievements in the field of conservative treatment of patients with intermittent claudication. In accordance with the requirements of evidence-based medicine, an overview of modern promising trends in conservative therapy presented in the latest Russian and foreign consensus documents, is given. The basis of the complex treatment of patients with peripheral arterial diseases is: non-drug and drug treatment to relieve the symptoms of chronic ischemia, pharmacotherapy for the secondary prevention of cardiovascular complications, open or endovascular revascularization to increase the distance of painfree walking. With the development of atherosclerosis, disturbances in the peptide composition of the endothelium occur, which reduce the ability of the vascular wall to resist inflammation and the associated triggering of pathological processes. It has been experimentally proven that the use of a complex of peptides obtained from the vessels of healthy and young animals in this situation restores the endothelial function of the arteries, affecting the main links of pathogenesis. Decrease in oxidative stress, decrease in atherogenic and lipidemic action, normalization of vascular tone and blood coagulation parameters, increase in the microvascular bed – these are the mechanisms that justify the indication of peptides to patients with atherosclerosis obliterans. Angioprotector based on a complex of polypeptides isolated from blood vessels can become an important part of the treatment of patients with obliterating diseases of the arteries of the lower extremities, providing a complex pathogenetic effect. It is necessary to further study in multicenter clinical trials the duration of the therapeutic effect of a drug in a longer period after a course of treatment, its effect on long-term outcomes of the disease, the possibility of using repeated courses, in chronic obliterating diseases of the arteries of the lower extremities III-IV stages according to the Fontaine classification, as well as the use drug for the treatment of systemic atherosclerosis of various arterial basins.
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Price D, Jackson KG, Lovegrove JA, Givens DI. The effects of whey proteins, their peptides and amino acids on vascular function. NUTR BULL 2022; 47:9-26. [DOI: 10.1111/nbu.12543] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 01/12/2022] [Accepted: 01/12/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Drew Price
- Hugh Sinclair Unit of Human Nutrition Department of Food and Nutritional Sciences University of Reading Reading UK
- Institute of Food Nutrition and Health University of Reading Reading UK
| | - Kim G. Jackson
- Hugh Sinclair Unit of Human Nutrition Department of Food and Nutritional Sciences University of Reading Reading UK
- Institute of Food Nutrition and Health University of Reading Reading UK
- Institute of Cardiovascular and Metabolic Research University of Reading Reading UK
| | - Julie A. Lovegrove
- Hugh Sinclair Unit of Human Nutrition Department of Food and Nutritional Sciences University of Reading Reading UK
- Institute of Food Nutrition and Health University of Reading Reading UK
- Institute of Cardiovascular and Metabolic Research University of Reading Reading UK
| | - David Ian Givens
- Institute of Food Nutrition and Health University of Reading Reading UK
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Rong Z, Chen H, Zhang Z, Zhang Y, Ge L, Lv Z, Zou Y, Lv J, He Y, Li W, Chen L. Identification of cardiomyopathy-related core genes through human metabolic networks and expression data. BMC Genomics 2022; 23:47. [PMID: 35016605 PMCID: PMC8753885 DOI: 10.1186/s12864-021-08271-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 12/15/2021] [Indexed: 12/27/2022] Open
Abstract
Abstract
Background
Cardiomyopathy is a complex type of myocardial disease, and its incidence has increased significantly in recent years. Dilated cardiomyopathy (DCM) and ischemic cardiomyopathy (ICM) are two common and indistinguishable types of cardiomyopathy.
Results
Here, a systematic multi-omics integration approach was proposed to identify cardiomyopathy-related core genes that could distinguish normal, DCM and ICM samples using cardiomyopathy expression profile data based on a human metabolic network. First, according to the differentially expressed genes between different states (DCM/ICM and normal, or DCM and ICM) of samples, three sets of initial modules were obtained from the human metabolic network. Two permutation tests were used to evaluate the significance of the Pearson correlation coefficient difference score of the initial modules, and three candidate modules were screened out. Then, a cardiomyopathy risk module that was significantly related to DCM and ICM was determined according to the significance of the module score based on Markov random field. Finally, based on the shortest path between cardiomyopathy known genes, 13 core genes related to cardiomyopathy were identified. These core genes were enriched in pathways and functions significantly related to cardiomyopathy and could distinguish between samples of different states.
Conclusion
The identified core genes might serve as potential biomarkers of cardiomyopathy. This research will contribute to identifying potential biomarkers of cardiomyopathy and to distinguishing different types of cardiomyopathy.
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Watanabe Y, Nakamura T, Uematsu M, Fujioka D, Inomata D, Saito Y, Horikoshi T, Yoshizaki T, Kobayashi T, Nakamura K, Kugiyama K. Glutaredoxin-1 levels in plasma can predict future events in patients with cardiovascular diseases. Free Radic Biol Med 2021; 176:241-245. [PMID: 34587543 DOI: 10.1016/j.freeradbiomed.2021.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 02/06/2023]
Abstract
Reactive oxygen species that increase during cardiovascular disease (CVD) react with protein cysteine residues to form a glutathione adduct by S-glutathionylation, which is selectively removed by glutaredoxin-1 (Glrx). We previously showed that S-glutathionylation and Glrx play important roles in mouse models of CVD, such as heart failure and peripheral artery disease models. However, there are few clinical studies on Glrx in CVD. Although Glrx is a cytosolic protein expressed in various organs, it is detectable in human plasma. Studies have reported that Glrx in plasma is a potential disease maker, such as CVD and chronic kidney disease and diabetes, however, it remains unclear whether Glrx is related to the prognosis of patients with CVD. The purpose of this study was to elucidate whether Glrx levels in plasma are associated with future events in patients with CVD. Plasma levels of Glrx were measured in 555 patients with CVD who underwent cardiac catheterization using enzyme-linked immunosorbent assay. All patients were followed prospectively for ≤36 months or until occurrence of adverse events, including all-cause death, non-fatal myocardial infarction, and worsening heart failure. During a mean follow-up period of 33 months, 54 adverse events occurred. Kaplan-Meier analysis showed that higher levels of Glrx (>0.622 ng/mL, determined by receiver-operating characteristic curve) resulted in a higher probability for adverse events compared with lower levels of Glrx (≤0.622 ng/mL) (P < 0.01, log-rank test). Multivariate Cox proportional hazards analysis showed that Glrx was a significant predictor of adverse events after adjustment for known risk factors. In conclusion, levels of plasma Glrx >0.662 ng/mL can predict future events in patients with CVD.
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Affiliation(s)
- Yosuke Watanabe
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan.
| | - Takamitsu Nakamura
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Manabu Uematsu
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Daisuke Fujioka
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Daichi Inomata
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Yukio Saito
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Takeo Horikoshi
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Toru Yoshizaki
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Tsuyoshi Kobayashi
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Kazuto Nakamura
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
| | - Kiyotaka Kugiyama
- Department of Cardiovascular Medicine, University of Yamanashi, Yamanashi, Japan
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Oral N-acetylcysteine as an adjunct to standard medical therapy improved heart function in cases with stable class II and III systolic heart failure. Ir J Med Sci 2021; 191:2063-2075. [PMID: 34727343 DOI: 10.1007/s11845-021-02829-3] [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: 10/01/2021] [Accepted: 10/21/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND This research attempted to assess whether N-acetylcysteine (NAC) as adjunctive therapy can be useful in the treatment of patients with heart failure (HF). METHODS Fifty-five cases with diagnosed systolic HF and stable symptomatic New York Heart Association (NYHA) functional class II and III and on optimal medical treatment of HF for at least 3 months were assigned for receiving oral NAC (600 mg twice daily) or placebo for 12 weeks. The outcomes were changes in the echocardiographic hemodynamic indices as well as the patients' functional capacity assessed by NYHA classification over a 12-week treatment. RESULTS Compared to placebo, NAC more significantly improved the systolic left ventricular (LV) function expressed as the ejection fraction and Tei index. These changes are accompanied by more improvement in other LV echocardiographic indices including LV end-diastolic volume index and LV global longitudinal strain in the patients receiving NAC in comparison with those receiving placebo. In parallel with the improvement of LV function, right ventricular (RV) function expressed as RV fractional area change and RV Tei-index also got more improvement in those receiving NAC than those receiving placebo. However, the change in RV global longitudinal strain did not show a significant difference between study groups. Additionally, at week 12, the distribution of the NYHA functional class also shifted toward a better outcome in the NAC group in comparison with the placebo group; however, it was not significant. CONCLUSIONS These preliminary data support experimental findings showing that NAC supplementation is able to improve heart function. TRIAL REGISTRATION The registration of the trial was done at the Iranian Registry of Clinical Trials ( www.irct.ir ). Identifier code: IRCT20120215009014N333. Registration date: 2020-01-11.
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Yang C, Xi M, Liu H, Bai H, Jiang C, Liu Q, Fan P. Association of Polymorphisms of Glutamate Cysteine Ligase Genes GCLC C-129 T and GCLM C-588 T with Risk of Polycystic Ovary Syndrome in Chinese Women. Reprod Sci 2021; 29:1790-1800. [PMID: 34642912 DOI: 10.1007/s43032-021-00764-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 10/03/2021] [Indexed: 01/18/2023]
Abstract
Polycystic ovary syndrome (PCOS) is generally considered a multifactorial disease caused by interactions between multiple susceptible genes and environmental factors. Glutamate cysteine ligase (GCL) is the rate-limiting enzyme in glutathione biosynthesis. This study examined the relationship between single nucleotide polymorphisms (SNPs) in the GCL catalytic subunit (GCLC C-129 T) and the modifier subunit (GCLM C-588 T) and PCOS. The two SNPs were genotyped in 1017 PCOS patients and 793 control women. Clinical, metabolic, hormonal, and oxidative stress parameters were also assessed. The frequencies of the CT + TT genotypes (21.6% vs. 27.7%) and T allele (11.5% vs. 14.7%) of SNP GCLC C-129 T were significantly lower in hyperandrogenism (HA)-PCOS patients than in control women. Logistic regression analysis revealed that the relative hazard of HA-PCOS was lower in individuals with the -129 T allele (CT + TT genotypes) than in those with the CC genotype (OR = 0.723, 95% CI: 0.571-0.915, P = 0.007). When using the GCLC-CC/GCLM-CC combined genotype as the reference category, the GCLC-CT + TT/GCLM-CC combined genotype was a protective factor for PCOS with HA (OR = 0.743, 95% CI: 0.566-0.976, P = 0.033). HA-PCOS patients with the -129 T allele had lower waist circumference, waist-to-hip ratio, and body mass index (BMI) and lower fasting insulin concentration and homeostatic model assessment of insulin resistance after correcting for age and BMI (P < 0.05). The T allele of SNP GCLC C-129 T and its combination with the CC genotype of SNP GCLM C-588 T are associated with decreased risk of HA-PCOS in Chinese women.
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Affiliation(s)
- Chunyi Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Mingrong Xi
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hongwei Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Huai Bai
- Laboratory of Genetic Disease and Perinatal Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Chenyu Jiang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qingqing Liu
- Laboratory of Genetic Disease and Perinatal Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ping Fan
- Laboratory of Genetic Disease and Perinatal Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.
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Luo W, Zhang S, Meng Q, Zhou J, Jin R, Long X, Tang YP, Guo H. A two-photon multi-emissive fluorescent probe for discrimination of Cys and Hcy/GSH via an aromatic substitution-rearrangement. Talanta 2021; 224:121833. [DOI: 10.1016/j.talanta.2020.121833] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/21/2020] [Accepted: 10/28/2020] [Indexed: 12/27/2022]
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9
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Szabó R, Hoffmann A, Börzsei D, Kupai K, Veszelka M, Berkó AM, Pávó I, Gesztelyi R, Juhász B, Turcsán Z, Pósa A, Varga C. Hormone Replacement Therapy and Aging: A Potential Therapeutic Approach for Age-Related Oxidative Stress and Cardiac Remodeling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8364297. [PMID: 33623635 PMCID: PMC7875635 DOI: 10.1155/2021/8364297] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/23/2020] [Accepted: 01/10/2021] [Indexed: 12/13/2022]
Abstract
Advanced age is an independent risk factor for cardiovascular diseases, which might be further exacerbated by estrogen deficiency. Hormone replacement therapy (HRT) decreases cardiovascular risks and events in postmenopausal women; however, its effects are not fully elucidated in older individuals. Thus, the aim of our study is to examine the impact of HRT on oxidant/antioxidant homeostasis and cardiac remodeling. In our experiment, control (fertile) and aging (~20-month-old) female Wistar rats were used. Aging rats were further divided into estrogen- (E2, 0.1 mg/kg/day per os) or raloxifene- (RAL, 1.0 mg/kg/day per os) treated subgroups. After 2 weeks of treatment, cardiac heme oxygenase (HO) activity, total glutathione (GSH) content, matrix metalloproteinase-2 (MMP-2) activity, and the concentrations of collagen type I and tissue inhibitor of metalloproteinase (TIMP-2), as well as the infarct size, were determined. The aging process significantly decreased the antioxidant HO activity and GSH content, altered the MMP-2/TIMP-2 signaling, and resulted in an excessive collagen accumulation, which culminated in cardiovascular injury. However, 2 weeks of either E2 or RAL treatment enhanced the antioxidant defense mechanisms and attenuated cardiac remodeling related to aging. Our findings clearly show that 2-week-long HRT is a potential intervention to bias successful cardiovascular aging via reducing oxidative damage and cardiovascular dysfunction.
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Affiliation(s)
- Renáta Szabó
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
- Interdisciplinary Excellence Centre, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Alexandra Hoffmann
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
| | - Denise Börzsei
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
| | - Krisztina Kupai
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
- 1st Department of Medicine, University of Szeged, Szeged H-6720, Hungary
| | - Médea Veszelka
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
| | - Anikó Magyariné Berkó
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
| | - Imre Pávó
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
| | - Rudolf Gesztelyi
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen H-4032, Hungary
| | - Béla Juhász
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen H-4032, Hungary
| | - Zsolt Turcsán
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
| | - Anikó Pósa
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
- Interdisciplinary Excellence Centre, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Csaba Varga
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged H-6726, Hungary
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Cyclophilin A inhibits A549 cell oxidative stress and apoptosis by modulating the PI3K/Akt/mTOR signaling pathway. Biosci Rep 2021; 41:227464. [PMID: 33393627 PMCID: PMC7846964 DOI: 10.1042/bsr20203219] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 12/19/2020] [Accepted: 12/24/2020] [Indexed: 12/19/2022] Open
Abstract
The excessive and inappropriate production of reactive oxygen species (ROS) can cause oxidative stress and is implicated in the pathogenesis of lung cancer. Cyclophilin A (CypA), a member of the immunophilin family, is secreted in response to ROS. To determine the role of CypA in oxidative stress injury, we investigated the role that CypA plays in human lung carcinoma (A549) cells. Here, we showed the protective effect of human recombinant CypA (hCypA) on hydrogen peroxide (H2O2)-induced oxidative damage in A549 cells, which play crucial roles in lung cancer. Our results demonstrated that hCypA substantially promoted cell viability, superoxide dismutase (SOD), glutathione (GSH), and GSH peroxidase (GSH-Px) activities, and attenuated ROS and malondialdehyde (MDA) production in H2O2-induced A549 cells. Compared with H2O2-induced A549 cells, Caspase-3 activity in hCypA-treated cells was significantly reduced. Using Western blotting, we showed that hCypA facilitated Bcl-2 expression and inhibited Bax, Caspase-3, Caspase-7, and PARP-1 expression. Furthermore, hCypA activates the PI3K/Akt/mTOR pathway in A549 cells in response to H2O2 stimulation. Additionally, peptidyl-prolyl isomerase activity was required for PI3K/Akt activation by CypA. The present study showed that CypA protected A549 cells from H2O2-induced oxidative injury and apoptosis by activating the PI3K/Akt/mTOR pathway. Thus, CypA might be a potential target for lung cancer therapy.
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Watanabe Y, Watanabe K, Fujioka D, Nakamura K, Nakamura T, Uematsu M, Bachschmid MM, Matsui R, Kugiyama K. Protein S-glutathionylation stimulate adipogenesis by stabilizing C/EBPβ in 3T3L1 cells. FASEB J 2020; 34:5827-5837. [PMID: 32141127 DOI: 10.1096/fj.201902575r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 02/07/2020] [Accepted: 02/20/2020] [Indexed: 02/02/2023]
Abstract
Reactive oxygen species (ROS) increase during adipogenesis and in obesity. Oxidants react with cysteine residues of proteins to form glutathione (GSH) adducts, S-glutathionylation, that are selectively removed by glutaredoxin-1 (Glrx). We have previously reported that Glrx knockout mice had increased protein S-glutathionylation and developed obesity by an unknown mechanism. In this study, we demonstrated that 3T3L1 adipocytes differentiation increased ROS and protein S-glutathionylation. Glrx ablation elevated protein S-glutathionylation and lipid content in 3T3L1 cells. Glrx replenishment decreased the lipid content of Glrx KO 3T3L1 cells. Glrx KO also increased protein expression and protein S-glutathionylation of the adipogenic transcription factor CCAAT enhancer-binding protein (C/EBP) β. Protein S-glutathionylation decreased the interaction of C/EBPβ and protein inhibitor of activated STAT (PIAS) 1, a small ubiquitin-related modifier E3 ligase that facilitates C/EBPβ degradation. Experiments with truncated mutant C/EBPβ demonstrated that PIAS1 interacted with the liver-enriched inhibitory protein (LIP) region of C/EBPβ. Furthermore, mass spectrometry analysis identified protein S-glutathionylation of Cys201 and Cys296 in the LIP region of C/EBPβ. The C201S, C296S double-mutant C/EBPβ prevented protein S-glutathionylation and preserved the interaction with PIAS1. In summary, Glrx ablation stimulated 3T3L1 cell differentiation and adipogenesis via increased protein S-glutathionylation of C/EBPβ, stabilizing and increasing C/EBPβ protein levels.
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Affiliation(s)
- Yosuke Watanabe
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Kazuhiro Watanabe
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Daisuke Fujioka
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Kazuto Nakamura
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Takamitsu Nakamura
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Manabu Uematsu
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Markus M Bachschmid
- Department of Medicine, Vascular Biology Section, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Reiko Matsui
- Department of Medicine, Vascular Biology Section, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Kiyotaka Kugiyama
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
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12
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Subramaniyan SB, Annes SB, Yuvasri M, Nivedha K, Ramesh S, Anbazhagan V. 1,3,5‐Triphenylpyrazoline Based Fluorescent Probe for Selective Sensing and Imaging of Glutathione in Live Cell under Oxidative Stress. ChemistrySelect 2020. [DOI: 10.1002/slct.201904169] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Siva Bala Subramaniyan
- Department of Chemistry, School of Chemical & Biotechnology SASTRA Deemed University, Thanjavur – 613401 Tamil Nadu India
| | - Sesuraj Babiola Annes
- Department of Chemistry, School of Chemical & Biotechnology SASTRA Deemed University, Thanjavur – 613401 Tamil Nadu India
| | - Manokaran Yuvasri
- Department of Chemistry, School of Chemical & Biotechnology SASTRA Deemed University, Thanjavur – 613401 Tamil Nadu India
| | - Kolanchinathan Nivedha
- Department of Chemistry, School of Chemical & Biotechnology SASTRA Deemed University, Thanjavur – 613401 Tamil Nadu India
| | - Subburethinam Ramesh
- Department of Chemistry, School of Chemical & Biotechnology SASTRA Deemed University, Thanjavur – 613401 Tamil Nadu India
| | - Veerappan Anbazhagan
- Department of Chemistry, School of Chemical & Biotechnology SASTRA Deemed University, Thanjavur – 613401 Tamil Nadu India
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13
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Sorrentino A, Steinhorn B, Troncone L, Saravi SSS, Badole S, Eroglu E, Kijewski MF, Divakaran S, Di Carli M, Michel T. Reversal of heart failure in a chemogenetic model of persistent cardiac redox stress. Am J Physiol Heart Circ Physiol 2019; 317:H617-H626. [PMID: 31298558 DOI: 10.1152/ajpheart.00177.2019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We previously described a novel "chemogenetic" animal model of heart failure that recapitulates a characteristic feature commonly found in human heart failure: chronic oxidative stress. This heart failure model uses a chemogenetic approach to activate a recombinant yeast d-amino acid oxidase in rat hearts in vivo to generate oxidative stress, which then rapidly leads to the development of a dilated cardiomyopathy. Here we apply this new model to drug testing by studying its response to treatment with the angiotensin II (ANG II) receptor blocker valsartan, administered either alone or with the neprilysin inhibitor sacubitril. Echocardiographic and [18F]fluorodeoxyglucose positron emission tomographic imaging revealed that valsartan in the presence or absence of sacubitril reverses the anatomical and metabolic remodeling induced by chronic oxidative stress. Markers of oxidative stress, mitochondrial function, and apoptosis, as well as classical heart failure biomarkers, also normalized following drug treatments despite the persistence of cardiac fibrosis. These findings provide evidence that chemogenetic heart failure is rapidly reversible by drug treatment, setting the stage for the study of novel heart failure therapeutics in this model. The ability of ANG II blockade and neprilysin inhibition to reverse heart failure induced by chronic oxidative stress identifies a central role for cardiac myocyte angiotensin receptors in the pathobiology of cardiac dysfunction caused by oxidative stress.NEW & NOTEWORTHY The chemogenetic approach allows us to distinguish cardiac myocyte-specific pathology from the pleiotropic changes that are characteristic of other "interventional" animal models of heart failure. These features of the chemogenetic heart failure model facilitate the analysis of drug effects on the progression and regression of ventricular remodeling, fibrosis, and dysfunctional signal transduction. Chemogenetic approaches will be highly informative in the study of the roles of redox stress in heart failure providing an opportunity for the identification of novel therapeutic targets.
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Affiliation(s)
- Andrea Sorrentino
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Benjamin Steinhorn
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Luca Troncone
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | | | - Sachin Badole
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Emrah Eroglu
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Marie Foley Kijewski
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Sanjay Divakaran
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Marcelo Di Carli
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Thomas Michel
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
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14
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Chen YL, Fan J, Cao L, Han TL, Zeng M, Xu Y, Ling Z, Yin Y. Unique mechanistic insights into the beneficial effects of angiotensin-(1-7) on the prevention of cardiac fibrosis: A metabolomic analysis of primary cardiac fibroblasts. Exp Cell Res 2019; 378:158-170. [PMID: 30844388 DOI: 10.1016/j.yexcr.2019.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/28/2019] [Accepted: 03/03/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cell metabolic pathways are highly conserved among species and change rapidly in response to drug stimulation. Therefore, we explore the effects of angiotensin-(1-7) in a primary cell model of cardiac fibrosis established in angiotensin II-stimulated cardiac fibroblasts via metabolomics analysis and further clarify the potential protective mechanism of angiotensin-(1-7). METHODS AND RESULTS After exposing cardiac fibroblasts to angiotensin II and/or angiotensin-(1-7), 172 metabolites in these cells were quantified and identified by gas chromatography-mass spectrometry. The data were subsequently analyzed by orthogonal partial least squares discriminant analysis to shortlist biochemically significant metabolites associated with the antifibrotic action of angiotensin-(1-7). Seven significant metabolites were identified: 10,13-dimethyltetradecanoic acid, arachidonic acid, aspartic acid, docosahexaenoic acid (DHA), glutathione, palmitelaidic acid, and pyroglutamic acid. By metabolic network analysis, we found that these metabolites were involved in six metabolic pathways, including arachidonic acid metabolism, leukotriene metabolism, and the γ-glutamyl cycle. Since these metabolic pathways are related to calcium balance and oxidative stress, we further verified that angiotensin-(1-7) suppressed the abnormal extracellular calcium influx and excessive accumulation of intracellular reactive oxygen species (ROS) in angiotensin II-stimulated cardiac fibroblasts. Furthermore, we found that angiotensin-(1-7) suppressed the abnormal calcium- and ROS-dependent activation of calcium/calmodulin-dependent protein kinase II delta (CaMKIIδ), the increased expression of CaMKIIδ-related proteins (NADPH oxidase 4 (Nox4), cellular communication network factor 2 (CTGF), and p-ERK1/2), and excessive collagen deposition in vitro and in vivo. CONCLUSIONS Angiotensin-(1-7) can ameliorate the angiotensin II-stimulated metabolic perturbations associated with cardiac fibroblast activation. These metabolic changes indicate that modulation of calcium- and ROS-dependent activation of CaMKIIδ mediates the activity of angiotensin-(1-7) against cardiac fibrosis. Moreover, pyroglutamic acid and arachidonic acid may be potential biomarkers for monitoring the antifibrotic action of angiotensin-(1-7).
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Affiliation(s)
- Yun-Lin Chen
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China
| | - Jinqi Fan
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China; Departments of Biomedical Engineering and Pediatrics, Emory University, Atlanta, GA 30322, USA
| | - Li Cao
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China
| | - Ting-Li Han
- Department of Obstetrics and Gynecology, the 1st Affiliated Hospital of Chongqing Medical University, China; Liggins Institute, University of Auckland, New Zealand; Mass Spectrometry Centre, China-Canada-New Zealand Joint Laboratory of Maternal and Foetal Medicine, Chongqing Medical University, China
| | - Mengying Zeng
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China
| | - Yanping Xu
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China
| | - Zhiyu Ling
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China
| | - Yuehui Yin
- Department of Cardiology, the 2nd Affiliated Hospital of Chongqing Medical University, China.
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15
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Gene-Level Regulation of Acupuncture Therapy in Spontaneously Hypertensive Rats: A Whole Transcriptome Analysis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:9541079. [PMID: 30906419 PMCID: PMC6398018 DOI: 10.1155/2019/9541079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/16/2018] [Accepted: 01/09/2019] [Indexed: 02/07/2023]
Abstract
Hypertension is a global health problem. It has been reported that acupuncture at Taichong acupoints (LR3) decreases high blood pressure in spontaneously hypertensive rats. A transcriptome analysis can profile gene expression and its relationship with acupuncture. In this study, rats were treated with 2 weeks of acupuncture followed by regular recording of blood pressure (BP). The mRNA changes in the rostral ventrolateral medulla (RVLM) were evaluated to uncover the genetic mechanisms of acupuncture by using a whole transcript array (Affymetrix Rat Gene 1.0 ST array). BP measurements showed that acupuncture significantly decreased systolic blood pressure (SBP), mean arterial pressure (MAP), and heart rate (HR). In the bioinformatics results, 2371 differentially expressed genes (DEGs) were identified, where 83 DEGs were overlapped among Wistar-Kyoto rats (WKYs), spontaneously hypertensive rats (SHRs), and SHRs + acupuncture rats (SHRs+Acu). Gene ontology (GO) and pathway analysis revealed that 279 GO terms and 20 pathways with significant differences were related to oxidative stress, inflammation, and vascular endothelial function. In addition, coexpressed DEGs networks indicated that Cd4 and Il-33 might mediate the cascade of inflammation and oxidative stress responses, which could serve as a potential target of acupuncture treatment. In conclusion, our study demonstrated that acupuncture is a promising therapy for treating hypertension and could regulate multiple biological processes mainly involving oxidative stress, inflammation, and vascular endothelial function.
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16
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Ooi BK, Chan KG, Goh BH, Yap WH. The Role of Natural Products in Targeting Cardiovascular Diseases via Nrf2 Pathway: Novel Molecular Mechanisms and Therapeutic Approaches. Front Pharmacol 2018; 9:1308. [PMID: 30498447 PMCID: PMC6249275 DOI: 10.3389/fphar.2018.01308] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/25/2018] [Indexed: 01/14/2023] Open
Abstract
Cardiovascular diseases (CVDs) are closely linked to cellular oxidative stress and inflammation. This may be resulted from the imbalance generation of reactive oxygen species and its role in promoting inflammation, thereby contributing to endothelial dysfunction and cardiovascular complications. Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor that plays a significant role in regulating expression of antioxidant and cytoprotective enzymes in response to oxidative stress. Natural products have emerged as a potential source of bioactive compounds which have shown to protect against atherogenesis development by activating Nrf2 signaling. This review aims to provide a comprehensive summary of the published data on the function, regulation and activation of Nrf2 as well as the molecular mechanisms of natural products in regulating Nrf2 signaling. The beneficial effects of using natural bioactive compounds as a promising therapeutic approach for the prevention and treatment of CVDs are reviewed.
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Affiliation(s)
- Bee Kee Ooi
- School of Biosciences, Taylor’s University, Subang Jaya, Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
- International Genome Centre, Jiangsu University, Zhenjiang, China
| | - Bey Hing Goh
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Bandar Sunway, Malaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
| | - Wei Hsum Yap
- School of Biosciences, Taylor’s University, Subang Jaya, Malaysia
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17
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Steinhorn B, Sorrentino A, Badole S, Bogdanova Y, Belousov V, Michel T. Chemogenetic generation of hydrogen peroxide in the heart induces severe cardiac dysfunction. Nat Commun 2018; 9:4044. [PMID: 30279532 PMCID: PMC6168530 DOI: 10.1038/s41467-018-06533-2] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 09/12/2018] [Indexed: 12/16/2022] Open
Abstract
Oxidative stress plays an important role in the pathogenesis of many disease states. In the heart, reactive oxygen species are linked with cardiac ischemia/reperfusion injury, hypertrophy, and heart failure. While this correlation between ROS and cardiac pathology has been observed in multiple models of heart failure, the independent role of hydrogen peroxide (H2O2) in vitro and in vivo is unclear, owing to a lack of tools for precise manipulation of intracellular redox state. Here we apply a chemogenetic system based on a yeast D-amino acid oxidase to show that chronic generation of H2O2 in the heart induces a dilated cardiomyopathy with significant systolic dysfunction. We anticipate that chemogenetic approaches will enable future studies of in vivo H2O2 signaling not only in the heart, but also in the many other organ systems where the relationship between redox events and physiology remains unclear. Excessive production of reactive oxygen species (ROS) is associated with cardiac dysfunction, but the causal role of ROS remains poorly understood. Here the authors use an in vivo chemogenetic approach to develop a heart failure model in which generation of hydrogen peroxide in the heart leads to systolic heart failure without fibrotic remodeling.
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Affiliation(s)
- Benjamin Steinhorn
- Department of Medicine, Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Andrea Sorrentino
- Department of Medicine, Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Sachin Badole
- Department of Medicine, Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Yulia Bogdanova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, GSP-7, Ulitsa Miklukho-Maklaya, 16/10, Moscow, Russia, 117997
| | - Vsevolod Belousov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, GSP-7, Ulitsa Miklukho-Maklaya, 16/10, Moscow, Russia, 117997.,Pirogov Russian National Research Medical University, Moscow, Russia, 117997.,Institute for Cardiovascular Physiology, Georg August University Göttingen, D-37075, Göttingen, Germany
| | - Thomas Michel
- Department of Medicine, Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA.
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18
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Gil A, van der Pol A, van der Meer P, Bischoff R. LC-MS analysis of key components of the glutathione cycle in tissues and body fluids from mice with myocardial infarction. J Pharm Biomed Anal 2018; 160:289-296. [DOI: 10.1016/j.jpba.2018.08.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 12/11/2022]
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19
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Liang B, Wang B, Ma Q, Xie C, Li X, Wang S. A lysosome-targetable turn-on fluorescent probe for the detection of thiols in living cells based on a 1,8-naphthalimide derivative. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 192:67-74. [PMID: 29126010 DOI: 10.1016/j.saa.2017.10.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 10/01/2017] [Accepted: 10/15/2017] [Indexed: 06/07/2023]
Abstract
Biological thiols, like cysteine (Cys), homocysteine (Hcy) and glutathione (GSH), play crucial roles in biological systems and in lysosomal processes. Highly selective probes for detecting biological thiols in lysomes of living cells are rare. In this work, a lysosome-targetable turn-on fluorescent probe for the detection of thiols in living cells was designed and synthesized based on a 1,8-naphthalimide derivative. The probe has a 4-(2-aminoethyl)morpholine unit as a lysosome-targetable group and an acrylate group as the thiol recognition unit as well as a fluorescence quencher. In the absence of biothiols, the probe displayed weak fluorescence due to the photoinduced electron transfer (PET) process. Upon the addition of biothiols, the probe exhibited an enhanced fluorescence emission centered at 550nm due to cleavage of the acrylate moiety. The probe had high selectivity toward biothiols. Moreover, the probe features fast response time, excitation in the visible region and ability of working in a wide pH range. The linear response range covers a concentration range of Cys from 1.5×10-7 to 1.0×10-5mol·L-1 and the detection limit is 6.9×10-8mol·L-1 for Cys. The probe has been successfully applied to the confocal imaging of biothiols in lysosomes of A549 cells with low cell toxicity. Furthermore, the method was successfully applied to the determination of thiols in a complex multicomponent mixture such as human serum, which suggests our proposed method has great potential for diagnostic purposes. All of such good properties prove it can be used to monitor biothiols in lysosomes of living cells and to be a good fluorescent probe for the selective detection of thiols.
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Affiliation(s)
- Beibei Liang
- School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450046, PR China
| | - Baiyan Wang
- Key Discipline Laboratory of Basic Medicine, Henan University of Traditional Chinese Medicine, Zhengzhou 450046, PR China
| | - Qiujuan Ma
- School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450046, PR China.
| | - Caixia Xie
- School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450046, PR China.
| | - Xian Li
- School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450046, PR China
| | - Suiping Wang
- Department of Food and Biological engineering, College of Chemical Engineering, Xiangtan University, Xiangtan 411105, PR China.
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20
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Activation of Serine One-Carbon Metabolism by Calcineurin Aβ1 Reduces Myocardial Hypertrophy and Improves Ventricular Function. J Am Coll Cardiol 2018; 71:654-667. [DOI: 10.1016/j.jacc.2017.11.067] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 11/16/2017] [Accepted: 11/28/2017] [Indexed: 01/01/2023]
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21
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van der Pol A, Gil A, Silljé HHW, Tromp J, Ovchinnikova ES, Vreeswijk-Baudoin I, Hoes M, Domian IJ, van de Sluis B, van Deursen JM, Voors AA, van Veldhuisen DJ, van Gilst WH, Berezikov E, van der Harst P, de Boer RA, Bischoff R, van der Meer P. Accumulation of 5-oxoproline in myocardial dysfunction and the protective effects of OPLAH. Sci Transl Med 2017; 9:eaam8574. [PMID: 29118264 DOI: 10.1126/scitranslmed.aam8574] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 08/01/2017] [Accepted: 10/03/2017] [Indexed: 12/28/2022]
Abstract
In response to heart failure (HF), the heart reacts by repressing adult genes and expressing fetal genes, thereby returning to a more fetal-like gene profile. To identify genes involved in this process, we carried out transcriptional analysis on murine hearts at different stages of development and on hearts from adult mice with HF. Our screen identified Oplah, encoding for 5-oxoprolinase, a member of the γ-glutamyl cycle that functions by scavenging 5-oxoproline. OPLAH depletion occurred as a result of cardiac injury, leading to elevated 5-oxoproline and oxidative stress, whereas OPLAH overexpression improved cardiac function after ischemic injury. In HF patients, we observed elevated plasma 5-oxoproline, which was associated with a worse clinical outcome. Understanding and modulating fetal-like genes in the failing heart may lead to potential diagnostic, prognostic, and therapeutic options in HF.
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Affiliation(s)
- Atze van der Pol
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Andres Gil
- Department of Pharmacy, Analytical Biochemistry, University of Groningen, 9713 AV Groningen, Netherlands
| | - Herman H W Silljé
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Jasper Tromp
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
- National Heart Centre Singapore, 169609 Singapore, Singapore
| | - Ekaterina S Ovchinnikova
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
- European Research Institute for the Biology of Aging, Laboratory of Stem Cell Regulation and Mechanisms of Regeneration, University of Groningen, 9713 AV Groningen, Netherlands
| | - Inge Vreeswijk-Baudoin
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Martijn Hoes
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Ibrahim J Domian
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Bart van de Sluis
- Molecular Genetics Section, Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | | | - Adriaan A Voors
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Dirk J van Veldhuisen
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Wiek H van Gilst
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Eugene Berezikov
- European Research Institute for the Biology of Aging, Laboratory of Stem Cell Regulation and Mechanisms of Regeneration, University of Groningen, 9713 AV Groningen, Netherlands
| | - Pim van der Harst
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Rudolf A de Boer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands
| | - Rainer Bischoff
- Department of Pharmacy, Analytical Biochemistry, University of Groningen, 9713 AV Groningen, Netherlands
| | - Peter van der Meer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, Netherlands.
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22
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Skvortsova L, Perfelyeva A, Khussainova E, Mansharipova A, Forman HJ, Djansugurova L. Association of GCLM -588C/T and GCLC -129T/C Promoter Polymorphisms of Genes Coding the Subunits of Glutamate Cysteine Ligase with Ischemic Heart Disease Development in Kazakhstan Population. DISEASE MARKERS 2017; 2017:4209257. [PMID: 28757675 PMCID: PMC5516751 DOI: 10.1155/2017/4209257] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/31/2017] [Accepted: 06/08/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Glutamate cysteine ligase (GCL) is a rate-limiting enzyme in synthesis of glutathione. Evidence suggests that genetic variations in the promoter region of genes coding a catalytic subunit (GCLC -129T/C) and a modifier subunit (GCLM -588C/T) of GCL have a functional impact on their transcriptional activity and were associated with various disorders. Hence, we hypothesize whether these two polymorphic variants of GCLM and GCLC genes are associated with the risk of ischemic heart disease (IHD) development in the population of Kazakhstan. METHODS We evaluated 360 patients with IHD and 341 control subjects. Allele frequencies of studied promoters' polymorphisms were detected by PCR-RFLP analysis. Multiple logistic regression analysis was applied to assess the risk for different genotypes obtained. RESULTS The presence of -588T allele in GCLM and -129T allele in GCLC gene genotypes was associated with an increased risk of IHD (GCLM -588T: OR = 3.92, p = 0.003; GCLC -129T: OR = 3.22, p = 0.03) for general ethnically mixed group. Analysis of each ethnical groups separately showed the higher risk tendency for Kazakhs as for GCLM -588T (OR = 4.79; p = 0.03) and as for GCLC -129T (OR = 4.79, p = 0.03). For Russians, statistically differences for two polymorphisms were not observed. CONCLUSION The two promoter polymorphisms of GCLM (-588C/T) and GCLC (-128T/C) are associated with an increased risk of IHD in Kazakhstan population.
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Affiliation(s)
- Liliya Skvortsova
- Institute of General Genetics and Cytology, Al-Farabi St. 93, Almaty, Kazakhstan
| | - Anastasia Perfelyeva
- Institute of General Genetics and Cytology, Al-Farabi St. 93, Almaty, Kazakhstan
| | - Elmira Khussainova
- Institute of General Genetics and Cytology, Al-Farabi St. 93, Almaty, Kazakhstan
| | | | - Henry Jay Forman
- Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Avenue, Los Angeles, CA 90089, USA
| | - Leyla Djansugurova
- Institute of General Genetics and Cytology, Al-Farabi St. 93, Almaty, Kazakhstan
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Redox regulation of ischemic limb neovascularization - What we have learned from animal studies. Redox Biol 2017; 12:1011-1019. [PMID: 28505880 PMCID: PMC5430575 DOI: 10.1016/j.redox.2017.04.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 04/08/2017] [Accepted: 04/24/2017] [Indexed: 12/31/2022] Open
Abstract
Mouse hindlimb ischemia has been widely used as a model to study peripheral artery disease. Genetic modulation of the enzymatic source of oxidants or components of the antioxidant system reveal that physiological levels of oxidants are essential to promote the process of arteriogenesis and angiogenesis after femoral artery occlusion, although mice with diabetes or atherosclerosis may have higher deleterious levels of oxidants. Therefore, fine control of oxidants is required to stimulate vascularization in the limb muscle. Oxidants transduce cellular signaling through oxidative modifications of redox sensitive cysteine thiols. Of particular importance, the reversible modification with abundant glutathione, called S-glutathionylation (or GSH adducts), is relatively stable and alters protein function including signaling, transcription, and cytoskeletal arrangement. Glutaredoxin-1 (Glrx) is an enzyme which catalyzes reversal of GSH adducts, and does not scavenge oxidants itself. Glrx may control redox signaling under fluctuation of oxidants levels. In ischemic muscle increased GSH adducts through Glrx deletion improves in vivo limb revascularization, indicating endogenous Glrx has anti-angiogenic roles. In accordance, Glrx overexpression attenuates VEGF signaling in vitro and ischemic vascularization in vivo. There are several Glrx targets including HIF-1α which may contribute to inhibition of vascularization by reducing GSH adducts. These animal studies provide a caution that excess antioxidants may be counter-productive for treatment of ischemic limbs, and highlights Glrx as a potential therapeutic target to improve ischemic limb vascularization.
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Matsuo K, Yabuki Y, Fukunaga K. Combined l-citrulline and glutathione administration prevents neuronal cell death following transient brain ischemia. Brain Res 2017; 1663:123-131. [PMID: 28315310 DOI: 10.1016/j.brainres.2017.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/11/2017] [Accepted: 03/12/2017] [Indexed: 10/20/2022]
Abstract
We previously reported that oral l-citrulline (l-Cit) administration antagonizes neuronal cell death in hippocampus following transient brain ischemia and that oral glutathione (GSH) administration prevents neuronal death through antioxidant activity. Here, we tested potential synergy of combined l-Cit and GSH administration in protection against neuronal death following cerebral ischemia. One day after a 20-min bilateral common carotid artery occlusion (BCCAO), mice were orally administered l-Cit or GSH alone (at 40 or 100mg/kgp.o.) or both (at 40mg/kgp.o. each) daily for 10days. The combination, but not l-Cit or GSH alone at 40mg/kgp.o., significantly prevented neuronal death in the hippocampal CA1 region in BCCAO mice. Consistently, combined l-Cit and GSH administration improved memory-related behavioral deficits observed in BCCAO mice. Combination treatment also significantly rescued reduced endothelial nitric oxide synthase (eNOS) protein levels and antagonized eNOS S-glutathionylation seen following BCCAO ischemia. Recovery of eNOS activity was confirmed by in vivo NO production in hippocampus of BCCAO mice. Taken together, combined administration of l-Cit with GSH rescues eNOS function, thereby inhibiting delayed neuronal death in hippocampus.
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Affiliation(s)
- Kazuya Matsuo
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
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25
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2-Aminobutyric acid modulates glutathione homeostasis in the myocardium. Sci Rep 2016; 6:36749. [PMID: 27827456 PMCID: PMC5101505 DOI: 10.1038/srep36749] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/20/2016] [Indexed: 02/06/2023] Open
Abstract
A previous report showed that the consumption of glutathione through oxidative stress activates the glutathione synthetic pathway, which is accompanied by production of ophthalmic acid from 2-aminobutyric acid (2-AB). We conducted a comprehensive quantification of serum metabolites using gas chromatography-mass spectrometry in patients with atrial septal defect to find clues for understanding myocardial metabolic regulation, and demonstrated that circulating 2-AB levels reflect hemodynamic changes. However, the metabolism and pathophysiological role of 2-AB remains unclear. We revealed that 2-AB is generated by an amino group transfer reaction to 2-oxobutyric acid, a byproduct of cysteine biosynthesis from cystathionine. Because cysteine is a rate-limiting substrate for glutathione synthesis, we hypothesized that 2-AB reflects glutathione compensation against oxidative stress. A murine cardiomyopathy model induced by doxorubicin supported our hypothesis, i.e., increased reactive oxygen species are accompanied by 2-AB accumulation and compensatory maintenance of myocardial glutathione levels. Intriguingly, we also found that 2-AB increases intracellular glutathione levels by activating AMPK and exerts protective effects against oxidative stress. Finally, we demonstrated that oral administration of 2-AB efficiently raises both circulating and myocardial glutathione levels and protects against doxorubicin-induced cardiomyopathy in mice. This is the first study to demonstrate that 2-AB modulates glutathione homeostasis in the myocardium.
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Watanabe Y, Cohen RA, Matsui R. Redox Regulation of Ischemic Angiogenesis - Another Aspect of Reactive Oxygen Species. Circ J 2016; 80:1278-84. [PMID: 27151566 DOI: 10.1253/circj.cj-16-0317] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Antioxidants are expected to improve cardiovascular disease (CVD) by eliminating oxidative stress, but clinical trials have not shown promising results in chronic CVD. Animal studies have revealed that reactive oxygen species (ROS) exacerbate acute CVDs in which high levels of ROS are observed. However, ROS are also necessary for angiogenesis after ischemia, because ROS not only damage cells but also stimulate the cell signaling required for angiogenesis. ROS affect signaling by protein modifications, especially of cysteine amino acid thiols. Although there are several cysteine modifications, S-glutathionylation (GSH adducts; -SSG), a reversible cysteine modification by glutathione (GSH), plays an important role in angiogenic signal transduction by ROS. Glutaredoxin-1 (Glrx) is an enzyme that specifically removes GSH adducts in vivo. Overexpression of Glrx inhibits, whereas deletion of Glrx improves revascularization after mouse hindlimb ischemia. These studies indicate that increased levels of GSH adducts in ischemic muscle are beneficial in promoting angiogenesis. The underlying mechanism can be explained by multiple targets of S-gluathionylation, which mediate the angiogenic effects in ischemia. Increments in the master angiogenic transcriptional factor, HIF-1α, reduction of the anti-angiogenic factor sFlt1, activation of the endoplasmic reticulum Ca(2+)pump, SERCA, and inhibition of phosphatases may occur as a consequence of enhanced S-glutathionylation in ischemic tissue. In summary, inducing S-glutathionylation by inhibiting Glrx may be a therapeutic strategy to improve ischemic angiogenesis in CVD. (Circ J 2016; 80: 1278-1284).
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Affiliation(s)
- Yosuke Watanabe
- Vascular Biology Section, Whitaker Cardiovascular Institute, Boston University School of Medicine
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27
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Kumar RR, Narasimhan M, Shanmugam G, Hong J, Devarajan A, Palaniappan S, Zhang J, Halade GV, Darley-Usmar VM, Hoidal JR, Rajasekaran NS. Abrogation of Nrf2 impairs antioxidant signaling and promotes atrial hypertrophy in response to high-intensity exercise stress. J Transl Med 2016; 14:86. [PMID: 27048381 PMCID: PMC4822244 DOI: 10.1186/s12967-016-0839-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 03/24/2016] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Anomalies in myocardial structure involving myocyte growth, hypertrophy, differentiation, apoptosis, necrosis etc. affects its function and render cardiac tissue more vulnerable to the development of heart failure. Although oxidative stress has a well-established role in cardiac remodeling and dysfunction, the mechanisms linking redox state to atrial cardiomyocyte hypertrophic changes are poorly understood. Here, we investigated the role of nuclear erythroid-2 like factor-2 (Nrf2), a central transcriptional mediator, in redox signaling under high intensity exercise stress (HIES) in atria. METHODS Age and sex-matched wild-type (WT) and Nrf2(-/-) mice at >20 months of age were subjected to HIES for 6 weeks. Gene markers of hypertrophy and antioxidant enzymes were determined in the atria of WT and Nrf2(-/-) mice by real-time qPCR analyses. Detection and quantification of antioxidants, 4-hydroxy-nonenal (4-HNE), poly-ubiquitination and autophagy proteins in WT and Nrf2(-/-) mice were performed by immunofluorescence analysis. The level of oxidative stress was measured by microscopical examination of di-hydro-ethidium (DHE) fluorescence. RESULTS Under the sedentary state, Nrf2 abrogation resulted in a moderate down regulation of some of the atrial antioxidant gene expression (Gsr, Gclc, Gstα and Gstµ) despite having a normal redox state. In response to HIES, enlarged atrial myocytes along with significantly increased gene expression of cardiomyocyte hypertrophy markers (Anf, Bnf and β-Mhc) were observed in Nrf2(-/-) when compared to WT mice. Further, the transcript levels of Gclc, Gsr and Gstµ and protein levels of NQO1, catalase, GPX1 were profoundly downregulated along with GSH depletion and increased oxidative stress in Nrf2(-/-) mice when compared to its WT counterparts after HIES. Impaired antioxidant state and profound oxidative stress were associated with enhanced atrial expression of LC3 and ATG7 along with increased ubiquitination of ATG7 in Nrf2(-/-) mice subjected to HIES. CONCLUSIONS Loss of Nrf2 describes an altered biochemical phenotype associated with dysregulation in genes related to redox state, ubiquitination and autophagy in HIES that result in atrial hypertrophy. Therefore, our findings direct that preserving Nrf2-related antioxidant function would be one of the effective strategies to safeguard atrial health.
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Affiliation(s)
- Radhakrishnan Rajesh Kumar
- />Cardiac Aging & Redox Signaling Laboratory, Division of Molecular & Cellular Pathology, Department of Pathology, The University of Alabama at Birmingham, Birmingham, AL 35294-2180 USA
| | - Madhusudhanan Narasimhan
- />Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430 USA
| | - Gobinath Shanmugam
- />Cardiac Aging & Redox Signaling Laboratory, Division of Molecular & Cellular Pathology, Department of Pathology, The University of Alabama at Birmingham, Birmingham, AL 35294-2180 USA
| | - Jennifer Hong
- />Division of Cardiovascular Medicine, Department of Medicine, The University of Utah School of Medicine, Salt Lake City, UT 84132 USA
| | - Asokan Devarajan
- />Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095 USA
| | - Sethu Palaniappan
- />Department of Bio-Engineering, Comprehensive Cardiovascular Center, The University of Alabama at Birmingham, Birmingham, AL USA
| | - Jianhua Zhang
- />Center for Free Radical Biology, The University of Alabama at Birmingham, Birmingham, AL 35294-2180 USA
| | - Ganesh V. Halade
- />Department of Medicine, Comprehensive Cardiovascular Center, The University of Alabama at Birmingham, Birmingham, AL USA
| | - Victor M. Darley-Usmar
- />Center for Free Radical Biology, The University of Alabama at Birmingham, Birmingham, AL 35294-2180 USA
| | - John R. Hoidal
- />Division of Pulmonary Medicine, Department of Medicine, The University of Utah School of Medicine, Salt Lake City, UT 84132 USA
| | - Namakkal S. Rajasekaran
- />Cardiac Aging & Redox Signaling Laboratory, Division of Molecular & Cellular Pathology, Department of Pathology, The University of Alabama at Birmingham, Birmingham, AL 35294-2180 USA
- />Division of Cardiovascular Medicine, Department of Medicine, The University of Utah School of Medicine, Salt Lake City, UT 84132 USA
- />Center for Free Radical Biology, The University of Alabama at Birmingham, Birmingham, AL 35294-2180 USA
- />Department of Exercise Physiology, College of Health, The University of Utah School of Medicine, Salt Lake City, UT 84132 USA
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Chakrabarti S, Wu J. Bioactive peptides on endothelial function. FOOD SCIENCE AND HUMAN WELLNESS 2016. [DOI: 10.1016/j.fshw.2015.11.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Zhang W, Deng J, Sunkara M, Morris AJ, Wang C, St Clair D, Vore M. Loss of multidrug resistance-associated protein 1 potentiates chronic doxorubicin-induced cardiac dysfunction in mice. J Pharmacol Exp Ther 2015; 355:280-7. [PMID: 26354995 DOI: 10.1124/jpet.115.225581] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/26/2015] [Indexed: 12/20/2022] Open
Abstract
Doxorubicin (DOX), an effective cancer chemotherapeutic agent, induces dose-dependent cardiotoxicity, in part due to its ability to cause oxidative stress. We investigated the role of multidrug resistance-associated protein 1 (Mrp1/Abcc1) in DOX-induced cardiotoxicity in C57BL wild-type (WT) mice and their Mrp1 null (Mrp1(-/-)) littermates. Male mice were administered intraperitoneal DOX (3 or 2 mg/kg body weight) or saline twice a week for 3 weeks and examined 2 weeks after the last dose (protocol A total dose: 18 mg/kg) or for 5 weeks, and mice were examined 48 hours and 2 weeks after the last dose (protocol B total dose: 20 mg/kg). Chronic DOX induced body weight loss and hemotoxicity, adverse effects significantly exacerbated in Mrp1(-/-) versus WT mice. In the heart, significantly higher basal levels of glutathione (1.41-fold ± 0.27-fold) and glutathione disulfide (1.35-fold ± 0.16-fold) were detected in Mrp1(-/-) versus WT mice, and there were comparable decreases in the glutathione/glutathione disulfide ratio in WT and Mrp1(-/-) mice after DOX administration. Surprisingly, DOX induced comparable increases in 4-hydroxynonenal glutathione conjugate concentration in hearts from WT and Mrp1(-/-) mice. However, more DOX-induced apoptosis was detected in Mrp1(-/-) versus WT hearts (P < 0.05) (protocol A), and cardiac function, assessed by measurement of fractional shortening and ejection fraction with echocardiography, was significantly decreased by DOX in Mrp1(-/-) versus WT mice (P < 0.05; 95% confidence intervals of 20.0%-24.3% versus 23.7%-29.5% for fractional shortening, and 41.5%-48.4% versus 47.7%-56.7% for ejection fraction; protocol B). Together, these data indicate that Mrp1 protects the mouse heart against chronic DOX-induced cardiotoxicity.
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Affiliation(s)
- Wei Zhang
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Jun Deng
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Manjula Sunkara
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Andrew J Morris
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Chi Wang
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Daret St Clair
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Mary Vore
- Department of Toxicology and Cancer Biology (W.Z., J.D., D.S.C., M.V.), Division of Cardiovascular Medicine, (M.S., A.J.M), and Markey Cancer Center (C.W.), College of Medicine, University of Kentucky, Lexington, Kentucky
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30
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Deng J, Coy D, Zhang W, Sunkara M, Morris AJ, Wang C, Chaiswing L, St Clair D, Vore M, Jungsuwadee P. Elevated glutathione is not sufficient to protect against doxorubicin-induced nuclear damage in heart in multidrug resistance-associated protein 1 (Mrp1/Abcc1) null mice. J Pharmacol Exp Ther 2015; 355:272-9. [PMID: 26354996 DOI: 10.1124/jpet.115.225490] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/26/2015] [Indexed: 12/18/2022] Open
Abstract
Cardiotoxicity is a major dose-limiting adverse effect of doxorubicin (DOX), mediated in part by overproduction of reactive oxygen species and oxidative stress. Abcc1 (Mrp1) mediates the efflux of reduced and oxidized glutathione (GSH, GSSG) and is also a major transporter that effluxes the GSH conjugate of 4-hydroxy-2-nonenal (HNE; GS-HNE), a toxic product of lipid peroxidation formed during oxidative stress. To assess the role of Mrp1 in protecting the heart from DOX-induced cardiac injury, wild-type (WT) and Mrp1 null (Mrp1(-/-)) C57BL/6 littermate mice were administered DOX (15 mg/kg) or saline (7.5 ml/kg) i.v., and heart ventricles were examined at 72 hours. Morphometric analysis by electron microscopy revealed extensive injuries in cytosol, mitochondria, and nuclei of DOX-treated mice in both genotypes. Significantly more severely injured nuclei were observed in Mrp1(-/-) versus WT mice (P = 0.031). GSH and the GSH/GSSG ratio were significantly increased in treatment-naïve Mrp1(-/-) versus WT mice; GSH remained significantly higher in Mrp1(-/-) versus WT mice after saline and DOX treatment, with no changes in GSSG or GSH/GSSG. GS-HNE, measured by mass spectrometry, was lower in the hearts of treatment-naïve Mrp1(-/-) versus WT mice (P < 0.05). DOX treatment decreased GS-HNE in WT but not Mrp1(-/-) mice, so that GS-HNE was modestly but significantly higher in Mrp1(-/-) versus WT hearts after DOX. Expression of enzymes mediating GSH synthesis and antioxidant proteins did not differ between genotypes. Thus, despite elevated GSH levels in Mrp1(-/-) hearts, DOX induced significantly more injury in the nuclei of Mrp1(-/-) versus WT hearts.
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Affiliation(s)
- Jun Deng
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Donna Coy
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Wei Zhang
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Manjula Sunkara
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Andrew J Morris
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Chi Wang
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Luksana Chaiswing
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Daret St Clair
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Mary Vore
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
| | - Paiboon Jungsuwadee
- Department of Toxicology and Cancer Biology (J.D., D.C., L.C., W.Z., D.St.C., M.V.), Division of Cardiovascular Medicine (M.S., A.J.M.), Markey Cancer Center (C.W.) University of Kentucky, Lexington, Kentucky; Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Administration Hospital and University of Wisconsin Medical School, Madison Wisconsin (L.C.); and School of Pharmacy, Fairleigh Dickinson University, Florham Park, New Jersey (P.J.)
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Abdelhamid G, El-Kadi AOS. Buthionine sulfoximine, an inhibitor of glutathione biosynthesis, induces expression of soluble epoxide hydrolase and markers of cellular hypertrophy in a rat cardiomyoblast cell line: roles of the NF-κB and MAPK signaling pathways. Free Radic Biol Med 2015; 82:1-12. [PMID: 25614461 DOI: 10.1016/j.freeradbiomed.2015.01.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 01/09/2015] [Accepted: 01/10/2015] [Indexed: 01/04/2023]
Abstract
Evidence suggests that upregulation of soluble epoxide hydrolase (sEH) is associated with the development of myocardial infarction, dilated cardiomyopathy, cardiac hypertrophy, and heart failure. However, the upregulation mechanism is still unknown. In this study, we treated H9C2 cells with buthionine sulfoximine (BSO) to explore whether oxidative stress upregulates sEH gene expression and to identify the molecular and cellular mechanisms behind this upregulatory response. Real-time PCR and Western blot analyses were used to measure mRNA and protein expression, respectively. We demonstrated that BSO significantly upregulated sEH at mRNA levels in a concentration- and time-dependent manner, leading to a significant increase in the cellular hypertrophic markers, atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP). Furthermore, BSO significantly increased the cytosolic phosphorylated IκB-α and translocation of NF-κB p50 subunits, as measured by Western blot analysis. This level of translocation was paralleled by an increase in the DNA-binding activity of NF-κB P50 subunits. Moreover, our results demonstrated that pretreatment with the NF-κB inhibitor PDTC significantly inhibited BSO-mediated induction of sEH and cellular hypertrophic marker gene expression in a dose-dependent manner. Additionally, mitogen-activated protein kinases (MAPKs) were transiently phosphorylated by BSO treatment. To understand further the role of MAPKs pathway in BSO-mediated induction of sEH mRNA, we examined the role of extracellular signal-regulated kinase (ERK), c-JunN-terminal kinase (JNK), and p38 MAPK. Indeed, treatment with the MEK/ERK signal transduction inhibitor, PD98059, partially blocked the activation of IκB-α and translocation of NF-κB p50 subunits induced by BSO. Moreover, pretreatment with MEK/ERK signal transduction inhibitors, PD98059 and U0126, significantly inhibited BSO-mediated induction of sEH and cellular hypertrophic marker gene expression. These results clearly demonstrated that the NF-κB signaling pathway is involved in BSO-mediated induction of sEH gene expression, and appears to be associated with the activation of the MAPK pathway. Furthermore, our findings provide a strong link between sEH-induced cardiac dysfunction and involvement of NF-κB in the development of cellular hypertrophy.
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Affiliation(s)
- Ghada Abdelhamid
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2N8
| | - Ayman O S El-Kadi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2N8.
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32
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Abstract
The interaction between antioxidant glutathione and the free thiol in susceptible cysteine residues of proteins leads to reversible protein S-glutathionylation. This reaction ensures cellular homeostasis control (as a common redox-dependent post-translational modification associated with signal transduction) and intervenes in oxidative stress-related cardiovascular pathology (as initiated by redox imbalance). The purpose of this review is to evaluate the recent knowledge on protein S-glutathionylation in terms of chemistry, broad cellular intervention, specific quantification, and potential for therapeutic exploitation. The data bases searched were Medline and PubMed, from 2009 to 2014 (term: glutathionylation). Protein S-glutathionylation ensures protection of protein thiols against irreversible over-oxidation, operates as a biological redox switch in both cell survival (influencing kinases and protein phosphatases pathways) and cell death (by potentiation of apoptosis), and cross-talks with phosphorylation and with S-nitrosylation. Collectively, protein S-glutathionylation appears as a valuable biomarker for oxidative stress, with potential for translation into novel therapeutic strategies.
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Affiliation(s)
- Doina Popov
- Institute of Cellular Biology and Pathology "N. Simionescu" of the Romanian Academy , 8, B.P. Hasdeu Street, Bucharest 050568 , Romania
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Wang SQ, Wu QH, Wang HY, Zheng XX, Shen SL, Zhang YR, Miao JY, Zhao BX. Novel pyrazoline-based fluorescent probe for detecting glutathione and its application in cells. Biosens Bioelectron 2013; 55:386-90. [PMID: 24434493 DOI: 10.1016/j.bios.2013.12.047] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 12/20/2013] [Accepted: 12/20/2013] [Indexed: 01/02/2023]
Abstract
A novel compound, 2-(1,5-diphenyl-4,5-dihydro-1H-pyrazol-3-yl)phenyl acrylate (probe L), was designed and synthesized as a highly sensitive and selective fluorescent probe for recognizing and detecting glutathione among cysteine, homocysteine and other amino acids. The structures of related compounds were characterized using IR, NMR and HRMS spectroscopy analysis. The probe is a non-fluorescent compound. On being mixed with glutathione in buffered EtOH:PBS=3:7 solution at pH 7.4, the probe exhibited the blue emission of the pyrazoline at 474 nm and a 83-fold enhancement in fluorescence intensity. This probe is very sensitive and displayed a linear fluorescence off-on response to glutathione with fluorometric detection limit of 8.2 × 10(-8)M. The emission of the probe is pH independent in the physiological pH range. Live-cell imaging of HeLa cells confirmed the cell permeability of the probe and its ability to selectively discriminate GSH from Cys and Hcy in cells. The toxicity of the probe was low in cultured HeLa cells.
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Affiliation(s)
- Sheng-Qing Wang
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Qing-Hua Wu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Hao-Yan Wang
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Xiao-Xin Zheng
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Shi-Li Shen
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Yan-Ru Zhang
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Jun-Ying Miao
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China.
| | - Bao-Xiang Zhao
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China.
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Tang L, Wang H, Ziolo MT. Targeting NOS as a therapeutic approach for heart failure. Pharmacol Ther 2013; 142:306-15. [PMID: 24380841 DOI: 10.1016/j.pharmthera.2013.12.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 11/19/2013] [Indexed: 02/07/2023]
Abstract
Nitric oxide is a key signaling molecule in the heart and is produced endogenously by three isoforms of nitric oxide synthase, neuronal NOS (NOS1), endothelial NOS (NOS3), and inducible NOS (NOS2). Nitric oxide signals via cGMP-dependent or independent pathways to modulate downstream proteins via specific post translational modifications (i.e. cGMP-dependent protein kinase phosphorylation, S-nitrosylation, etc.). Dysfunction of NOS (i.e. altered expression, location, coupling, activity, etc.) exists in various cardiac disease conditions, such as heart failure, contributing to the contractile dysfunction, adverse remodeling, and hypertrophy. This review will focus on the signaling pathways of each NOS isoform during health and disease, and discuss current and potential therapeutic approaches targeting nitric oxide signaling to treat heart disease.
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Affiliation(s)
- Lifei Tang
- Department of Physiology & Cell Biology, Davis Heart and Lung Research Institute, The Ohio State University, USA
| | - Honglan Wang
- Department of Physiology & Cell Biology, Davis Heart and Lung Research Institute, The Ohio State University, USA
| | - Mark T Ziolo
- Department of Physiology & Cell Biology, Davis Heart and Lung Research Institute, The Ohio State University, USA.
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Bir SC, Shen X, Kavanagh TJ, Kevil CG, Pattillo CB. Control of angiogenesis dictated by picomolar superoxide levels. Free Radic Biol Med 2013; 63:135-42. [PMID: 23685287 PMCID: PMC3732119 DOI: 10.1016/j.freeradbiomed.2013.05.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 12/12/2022]
Abstract
Control of vascular insufficiencies due to various cardiovascular pathologies is important for developing specific and effective treatments. Fluctuations in oxidative stress significantly alter the progression of angiogenesis under physiological and pathological conditions. However, the precise amount of reactive oxygen species (ROS) required to influence subsequent signaling pathways for ischemic angiogenesis remains undefined. Here, we have determined the effect of ROS-mediated molecular mechanisms on angiogenesis in a murine model of peripheral artery disease using Gclm mutant mice (a model of compromised glutathione synthesis and therefore reduced antioxidant capacity). Left femoral artery ligation and excision were performed in Gclm WT (+/+), heterozygous (+/-), and null (-/-) mice. Blood flow (laser Doppler), angiogenic index (CD31/DAPI), and proliferation index (Ki67/DAPI) were significantly increased in Gclm(+/-) mice but not in Gclm(+/+) or Gclm(-/-) mice. Measurements of reactive oxygen species suggest that the amount of superoxide required to stimulate angiogenesis after the induction of ischemia is 9.82 pmol/mg of tissue. Protein carbonyl levels increased in a manner consistent with increasing oxidative stress. Superoxide and protein carbonyl levels were reduced by the addition of the nitroxide tempol, a known superoxide dismutase mimetic. Finally, restoration of blood flow in Gclm(+/-) mice was attenuated by a VEGF164 aptamer, verifying that slightly elevated levels of ROS restore blood flow by stimulating endothelial cell proliferation through a VEGF-dependent pathway. The results of this study reveal new information on the amount of ROS necessary for angiogenic activity and provide the foundation of critical redox parameters for vascular remodeling responses. The information obtained from this study on vascular ischemia, using a model of decreased antioxidant capacity, has provided insight into the control of revascularization and is a step forward in our ability to regulate angiogenic therapies.
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Affiliation(s)
- Shyamal C Bir
- Department of Pathology, LSU Health Sciences Center-Shreveport, Shreveport, LA 71104
| | - Xinggui Shen
- Department of Pathology, LSU Health Sciences Center-Shreveport, Shreveport, LA 71104
| | - Terrance J Kavanagh
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195
| | - Christopher G Kevil
- Department of Pathology, LSU Health Sciences Center-Shreveport, Shreveport, LA 71104
- Department of Molecular and Cellular Physiology, LSU Health Sciences Center-Shreveport, Shreveport, LA 71104
| | - Christopher B Pattillo
- Department of Molecular and Cellular Physiology, LSU Health Sciences Center-Shreveport, Shreveport, LA 71104
- Correspondence to: Christopher B. Pattillo, Ph.D., Department of Molecular and Cellular Physiology, LSU Health Sciences Center-Shreveport, 1501 Kings Hwy, Shreveport, LA 71130, , Phone: (318) 675-6974, Fax: (318) 675-6005
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Weldy CS, Luttrell IP, White CC, Morgan-Stevenson V, Cox DP, Carosino CM, Larson TV, Stewart JA, Kaufman JD, Kim F, Chitaley K, Kavanagh TJ. Glutathione (GSH) and the GSH synthesis gene Gclm modulate plasma redox and vascular responses to acute diesel exhaust inhalation in mice. Inhal Toxicol 2013; 25:444-54. [PMID: 23808636 DOI: 10.3109/08958378.2013.801004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Inhalation of fine particulate matter (PM₂.₅) is associated with acute pulmonary inflammation and impairments in cardiovascular function. In many regions, PM₂.₅ is largely derived from diesel exhaust (DE), and these pathophysiological effects may be due in part to oxidative stress resulting from DE inhalation. The antioxidant glutathione (GSH) is important in limiting oxidative stress-induced vascular dysfunction. The rate-limiting enzyme in GSH synthesis is glutamate cysteine ligase and polymorphisms in its catalytic and modifier subunits (GCLC and GCLM) have been shown to influence vascular function and risk of myocardial infarction in humans. OBJECTIVE We hypothesized that compromised de novo synthesis of GSH in Gclm⁻/⁺ mice would result in increased sensitivity to DE-induced lung inflammation and vascular effects. MATERIALS AND METHODS WT and Gclm⁻/⁺ mice were exposed to DE via inhalation (300 μg/m³) for 6 h. Neutrophil influx into the lungs, plasma GSH redox potential, vascular reactivity of aortic rings and aortic nitric oxide (NO•) were measured. RESULTS DE inhalation resulted in mild bronchoalveolar neutrophil influx in both genotypes. DE-induced effects on plasma GSH oxidation and acetylcholine (ACh)-relaxation of aortic rings were only observed in Gclm⁻/⁺ mice. Contrary to our hypothesis, DE exposure enhanced ACh-induced relaxation of aortic rings in Gclm⁻/⁺ mice. DISCUSSION AND CONCLUSION THESE data support the hypothesis that genetic determinants of antioxidant capacity influence the biological effects of acute inhalation of DE. However, the acute effects of DE on the vasculature may be dependent on the location and types of vessels involved. Polymorphisms in GSH synthesis genes are common in humans and further investigations into these potential gene-environment interactions are warranted.
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Affiliation(s)
- Chad S Weldy
- Department of Environmental and Occupational Health Sciences, University of Washington, Box 354695, Seattle, WA 98195, USA
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Wang SQ, Wu QH, Wang HY, Zheng XX, Shen SL, Zhang YR, Miao JY, Zhao BX. A novel pyrazoline-based selective fluorescent probe for detecting reduced glutathione and its application in living cells and serum. Analyst 2013; 138:7169-74. [DOI: 10.1039/c3an01440a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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