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Ryaboshapkina M, Ye R, Ye Y, Birnbaum Y. Effects of Dapagliflozin on Myocardial Gene Expression in BTBR Mice with Type 2 Diabetes. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07517-1. [PMID: 37914900 DOI: 10.1007/s10557-023-07517-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND Dapagliflozin, a sodium-glucose cotransporter 2 (SGLT2) inhibitor, is approved for the treatment of type 2 diabetes, heart failure, and chronic kidney disease. DAPA-HF and DELIVER trial results demonstrate that the cardiovascular protective effect of dapagliflozin extends to non-diabetic patients. Hence, the mechanism-of-action may extend beyond glucose-lowering and is not completely elucidated. We have previously shown that dapagliflozin reduces cardiac hypertrophy, inflammation, fibrosis, and apoptosis and increases ejection fraction in BTBR mice with type 2 diabetes. METHODS We conducted a follow-up RNA-sequencing study on the heart tissue of these animals and performed differential expression and Ingenuity Pathway analysis. Selected markers were confirmed by RT-PCR and Western blot. RESULTS SGLT2 had negligible expression in heart tissue. Dapagliflozin improved cardiac metabolism by decreasing glycolysis and pyruvate utilization enzymes, induced antioxidant enzymes, and decreased expression of hypoxia markers. Expression of inflammation, apoptosis, and hypertrophy pathways was decreased. These observations corresponded to the effects of dapagliflozin in the clinical trials.
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Affiliation(s)
- Maria Ryaboshapkina
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Regina Ye
- University of Texas at Austin, Austin, TX, USA
| | - Yumei Ye
- The Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, USA
| | - Yochai Birnbaum
- The Section of Cardiology, The Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA.
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2
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Heck-Swain KL, Koeppen M. The Intriguing Role of Hypoxia-Inducible Factor in Myocardial Ischemia and Reperfusion: A Comprehensive Review. J Cardiovasc Dev Dis 2023; 10:jcdd10050215. [PMID: 37233182 DOI: 10.3390/jcdd10050215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023] Open
Abstract
Hypoxia-inducible factors (HIFs) play a crucial role in cellular responses to low oxygen levels during myocardial ischemia and reperfusion injury. HIF stabilizers, originally developed for treating renal anemia, may offer cardiac protection in this context. This narrative review examines the molecular mechanisms governing HIF activation and function, as well as the pathways involved in cell protection. Furthermore, we analyze the distinct cellular roles of HIFs in myocardial ischemia and reperfusion. We also explore potential therapies targeting HIFs, emphasizing their possible benefits and limitations. Finally, we discuss the challenges and opportunities in this research area, underscoring the need for continued investigation to fully realize the therapeutic potential of HIF modulation in managing this complex condition.
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Affiliation(s)
- Ka-Lin Heck-Swain
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Tuebingen, 72076 Tübingen, Germany
| | - Michael Koeppen
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Tuebingen, 72076 Tübingen, Germany
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3
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Lee S, Williams HC, Gorman AA, Devanney NA, Harrison DA, Walsh AE, Goulding DS, Tuck T, Schwartz JL, Zajac DJ, Macauley SL, Estus S, Julia TCW, Johnson LA, Morganti JM. APOE4 drives transcriptional heterogeneity and maladaptive immunometabolic responses of astrocytes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.06.527204. [PMID: 36798317 PMCID: PMC9934552 DOI: 10.1101/2023.02.06.527204] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Apolipoprotein E4 (APOE4) is the strongest risk allele associated with the development of late onset Alzheimer's disease (AD). Across the CNS, astrocytes are the predominant expressor of APOE while also being critical mediators of neuroinflammation and cerebral metabolism. APOE4 has been consistently linked with dysfunctional inflammation and metabolic processes, yet insights into the molecular constituents driving these responses remain unclear. Utilizing complementary approaches across humanized APOE mice and isogenic human iPSC astrocytes, we demonstrate that ApoE4 alters the astrocyte immunometabolic response to pro-inflammatory stimuli. Our findings show that ApoE4-expressing astrocytes acquire distinct transcriptional repertoires at single-cell and spatially-resolved domains, which are driven in-part by preferential utilization of the cRel transcription factor. Further, inhibiting cRel translocation in ApoE4 astrocytes abrogates inflammatory-induced glycolytic shifts and in tandem mitigates production of multiple pro-inflammatory cytokines. Altogether, our findings elucidate novel cellular underpinnings by which ApoE4 drives maladaptive immunometabolic responses of astrocytes.
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Affiliation(s)
- Sangderk Lee
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
| | - Holden C. Williams
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY
| | - Amy A. Gorman
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
| | - Nicholas A. Devanney
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
- Department of Biology, University of Kentucky College of Arts and Sciences, Lexington, KY
| | | | - Adeline E. Walsh
- Department of Biology, University of Kentucky College of Arts and Sciences, Lexington, KY
| | - Danielle S. Goulding
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
| | - Tony Tuck
- Boston University, Chobanian & Avedisian School of Medicine, Boston, MA
| | - James L. Schwartz
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
| | - Diana J. Zajac
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
- Department of Biology, University of Kentucky College of Arts and Sciences, Lexington, KY
| | - Shannon L. Macauley
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC
| | - Steven Estus
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
- Department of Biology, University of Kentucky College of Arts and Sciences, Lexington, KY
| | - TCW Julia
- Boston University, Chobanian & Avedisian School of Medicine, Boston, MA
| | - Lance A. Johnson
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
- Department of Biology, University of Kentucky College of Arts and Sciences, Lexington, KY
| | - Josh M. Morganti
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY
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Chen RF, Chen PM, Pan CS, Huang CC, Chiang EPI. Association of metallothionein 2A rs10636 with low mean corpuscular volume (MCV), low mean corpuscular haemoglobin (MCH) in healthy Taiwanese. Sci Rep 2023; 13:1292. [PMID: 36690679 PMCID: PMC9869811 DOI: 10.1038/s41598-022-27304-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/29/2022] [Indexed: 01/25/2023] Open
Abstract
Human metallothionein-2A (MT2A) protein participates in metal homeostasis, detoxification, oxidative stress reduction, and immune defense. It decreases heavy metal ions and reactive oxygen species (ROS) during injury of cells and tissues. The single nucleotide polymorphisms at the MT2A gene have been associated in various human diseases including cancer. The current study aimed to elucidate associations between MT2A genotypes with the clinical, biochemical, and molecular characteristics that potentially related to lowered MT2A ex-pression. One hundred and forty-one healthy Taiwanese subjects were enrolled from Changhua Show-Chwan Memorial Hospital. Clinical, biochemical and molecular characteristics including the frequent minor allele SNPs, rs28366003 and rs10636, within the MT2A gene were determined. The genotype distribution of MT2A rs10636 fits the Hardy-Weinberg equilibrium. The significant associations with gradually decline of mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) were identified with MT2A rs10636 and rs28366003 using analysis of variance (ANOVA) with Tukey's analysis as a post hoc test. We further validated the correlations between the expressions of genes in erythropoiesis, cholesterol synthesis, platelet synthesis, insulin with MT2A using the web-based Gene Expression Profiling Interactive Analysis (GEPIA) databases. The results revealed that hypoxia-inducible factor 1α (HIF-1α), erythropoietin (EPO), lipoprotein lipase (LPL), and lecithin-cholesterol acyltransferase (LCAT) mRNA ex-pression are significantly correlated with MT2A mRNA expression. In conclusion, these results suggested that genetic variations of MT2A rs10636 and rs28366003 might be an important risk factor for erythropoiesis in the Taiwanese general population.
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Affiliation(s)
- Rong-Fu Chen
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan, Republic of China
| | - Po-Ming Chen
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, Republic of China
- Research Assistant Center, Show-Chwan Memorial Hospital, Changhua, 500, Taiwan, Republic of China
| | - Chau-Shiung Pan
- Department of Neurology, Show-Chwan Memorial Hospital, Changhua, Taiwan, Republic of China
| | - Chieh-Cheng Huang
- Department of Life Science, National Chung Hsing University, Taichung, 40402, Taiwan, Republic of China
- Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung, 402, Taiwan, Republic of China
| | - En-Pei Isabel Chiang
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, Republic of China.
- Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung, 402, Taiwan, Republic of China.
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5
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Wei S, Yu X, Wen X, Zhang M, Lang Q, Zhong P, Huang B. Genetic Variations in Metallothionein Genes and Susceptibility to Hypertensive Disorders of Pregnancy: A Case-Control Study. Front Genet 2022; 13:830446. [PMID: 35734434 PMCID: PMC9208279 DOI: 10.3389/fgene.2022.830446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/19/2022] [Indexed: 01/07/2023] Open
Abstract
Background: The involvement of oxidative stress in the pathological process of hypertensive disorders of pregnancy (HDP) gives rise to the interest in exploring the association of genetic variations in antioxidant metallothionein (MT) genes with HDP susceptibility. Methods: Seventeen single-nucleotide polymorphisms(SNPs) in MT genes were selected to conduct genotyping based on a case-control study consisting of 371 HDP cases (pregnancy with chronic hypertension (66), gestational hypertension (172), and preeclampsia or preeclampsia superimposed on chronic hypertension (133)) and 479 controls. The association between SNPs in MTs and the risk of HDP was estimated with unconditional logistic regression analysis and further tested with the false-positive report probability (FPRP) procedure. The joint effects of SNPs on the HDP risk were assessed by haplotype analysis. Results: After the adjustment for age and pre-pregnancy body mass index (pre-BMI) in the logistic regress analysis and followed by the FPRP test, the genetic variation rs10636 (OR = 0.46, 95% CI: 0.30–0.71 for GG vs. CC, p = 0.000 and OR = 0.48, 95% CI: 0.32–0.73 for GG vs. CG/CC, p = 0.001) in MT2A was associated with gestational hypertension. Other four SNPs, that is, rs11076161 (OR = 1.89, 95% CI: 1.35–2.63 for GG vs. GA/AA, p = 0.000) in MT1A; rs7191779 (OR = 1.54, 95% CI: 1.11–2.13 for CC vs. CG/GG, p = 0.010) in MT1B; rs8044719 (OR = 0.57, 95% CI: 0.40–0.80 for GT vs. GG, p = 0.001) in MT1DP; and rs8052334 (OR = 1.52, 95% CI: 1.10–2.11 for TT vs. TC/CC, p = 0.012) in MT1B were significantly associated with the susceptibility of HDP. The haplotype analysis among 11, 10, 10, and seven SNPs in MT (MT1A, MT2A, MT1M, MT1B, and MT1DP) genes showed that eight (A-C-G-T-C-G-A-G-C-G-C, OR = 4.559; A-C-T-C-C-C-A-G-C-G-C, OR = 5.777; A-C-T-T-C-G-A-G-C-G-C, OR = 4.590; G-A-T-C-C-G-C-G-G-C-C, OR = 4.065; G-A-T-C-G-C-C-G-G-C-C, OR = 4.652; G-A-T-T-C-C-C-G-G-C-C, OR = 0.404; G-C-T-C-C-C-A-G-G-C-C, OR = 1.901; G-C-T-T-C-C-A-G-G-C-C, and OR = 3.810), five (C-G-A-T-C-A-C-C-G-G, OR = 2.032; C-G-A-T-C-G-C-C-G-G, OR = 2.077; G-A-C-T-C-A-C-C-T-G, OR = 0.564; G-G-A-G-C-A-C-C-G-G, OR = 5.466; G-G-A-T-T-A-G-C-G-G, and OR = 0.284), five (A-C-G-T-C-G-A-G-C-C, OR = 2.399; A-C-T-C-C-C-C-T-G-G, OR = 0.259; G-A-T-C-C-C-C-G-G-C, OR = 1.572; G-A-T-C-G-C-C-G-G-C, OR = 0.001; G-C-T-C-G-C-A-G-G-C, and OR = 2.512), and five (A-C-T-C-C-C-G, OR = 0.634; G-A-G-C-C-C-G, OR = 4.047; G-A-T-T-G-C-G, OR = 0.499; G-C-G-T-C-A-G, and OR = 7.299; G-C-T-C-C-A-G, OR = 1.434) haplotypes were significantly associated with pregnancy with chronic hypertension, gestational hypertension, preeclampsia, or preeclampsia superimposed on chronic hypertension and HDP. Conclusion: These variant MT alleles and their combination patterns may be used as genetic markers for predicting HDP susceptibility.
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Affiliation(s)
- Shudan Wei
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care, Guilin Medical University, Guilin, China
| | - Xiangyuan Yu
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care, Guilin Medical University, Guilin, China
| | - Xiaolan Wen
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care, Guilin Medical University, Guilin, China
| | - Min Zhang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care, Guilin Medical University, Guilin, China
| | - Qi Lang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care, Guilin Medical University, Guilin, China
| | - Ping Zhong
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Bo Huang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care, Guilin Medical University, Guilin, China
- *Correspondence: Bo Huang,
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Tang W, Guo ZD, Chai WN, Du DL, Yang XM, Cao L, Chen H, Zhou C, Cheng CJ, Sun XC, Huang ZJ, Zhong JJ. Downregulation of miR-491-5p promotes neovascularization after traumatic brain injury. Neural Regen Res 2022; 17:577-586. [PMID: 34380897 PMCID: PMC8504397 DOI: 10.4103/1673-5374.314326] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
MicroRNA-491-5p (miR-491-5p) plays an important role in regulating cell proliferation and migration; however, the effect of miR-491-5p on neovascularization after traumatic brain injury remains poorly understood. In this study, a controlled cortical injury model in C57BL/6 mice and an oxygen-glucose deprivation model in microvascular endothelial cells derived from mouse brain were established to simulate traumatic brain injury in vivo and in vitro, respectively. In the in vivo model, quantitative real-time-polymerase chain reaction results showed that the expression of miR-491-5p increased or decreased following the intracerebroventricular injection of an miR-491-5p agomir or antagomir, respectively, and the expression of miR-491-5p decreased slightly after traumatic brain injury. To detect the neuroprotective effects of miR-491-p, neurological severity scores, Morris water maze test, laser speckle techniques, and immunofluorescence staining were assessed, and the results revealed that miR-491-5p downregulation alleviated neurological dysfunction, promoted the recovery of regional cerebral blood flow, increased the number of lectin-stained microvessels, and increased the survival of neurons after traumatic brain injury. During the in vitro experiments, the potential mechanism of miR-491-5p on neovascularization was explored through quantitative real-time-polymerase chain reaction, which showed that miR-491-5p expression increased or decreased in brain microvascular endothelial cells after transfection with an miR-491-5p mimic or inhibitor, respectively. Dual-luciferase reporter and western blot assays verified that metallothionein-2 was a target gene for miR-491-5p. Cell counting kit 8 (CCK-8) assay, flow cytometry, and 2?,7?-dichlorofluorescein diacetate (DCFH-DA) assay results confirmed that the downregulation of miR-491-5p increased brain microvascular endothelial cell viability, reduced cell apoptosis, and alleviated oxidative stress under oxygen-glucose deprivation conditions. Cell scratch assay, Transwell assay, tube formation assay, and western blot assay results demonstrated that miR-491-5p downregulation promoted the migration, proliferation, and tube formation of brain microvascular endothelial cells through a metallothionein-2-dependent hypoxia-inducible factor-1α/vascular endothelial growth factor pathway. These findings confirmed that miR-491-5p downregulation promotes neovascularization, restores cerebral blood flow, and improves the recovery of neurological function after traumatic brain injury. The mechanism may be mediated through a metallothionein-2-dependent hypoxia-inducible factor-1α/vascular endothelial growth factor signaling pathway and the alleviation of oxidative stress. All procedures were approved by Ethics Committee of the First Affiliated Hospital of Chongqing Medical University, China (approval No. 2020-304) on June 22, 2020.
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Affiliation(s)
- Wei Tang
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zong-Duo Guo
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei-Na Chai
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Dong-Lin Du
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiao-Min Yang
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lang Cao
- Department of Ophthalmology, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hong Chen
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chao Zhou
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chong-Jie Cheng
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiao-Chuan Sun
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhi-Jian Huang
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jian-Jun Zhong
- Department of Neurosurgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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7
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Wang K, Dai X, He J, Yan X, Yang C, Fan X, Sun S, Chen J, Xu J, Deng Z, Fan J, Yuan X, Liu H, Carlson EC, Shen F, Wintergerst KA, Conklin DJ, Epstein PN, Lu C, Tan Y. Endothelial Overexpression of Metallothionein Prevents Diabetes-Induced Impairment in Ischemia Angiogenesis Through Preservation of HIF-1α/SDF-1/VEGF Signaling in Endothelial Progenitor Cells. Diabetes 2020; 69:1779-1792. [PMID: 32404351 PMCID: PMC7519474 DOI: 10.2337/db19-0829] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 05/09/2020] [Indexed: 12/13/2022]
Abstract
Diabetes-induced oxidative stress is one of the major contributors to dysfunction of endothelial progenitor cells (EPCs) and impaired endothelial regeneration. Thus, we tested whether increasing antioxidant protein metallothionein (MT) in EPCs promotes angiogenesis in a hind limb ischemia (HLI) model in endothelial MT transgenic (JTMT) mice with high-fat diet- and streptozocin-induced diabetes. Compared with littermate wild-type (WT) diabetic mice, JTMT diabetic mice had improved blood flow recovery and angiogenesis after HLI. Similarly, transplantation of JTMT bone marrow-derived mononuclear cells (BM-MNCs) stimulated greater blood flow recovery in db/db mice with HLI than did WT BM-MNCs. The improved recovery was associated with augmented EPC mobilization and angiogenic function. Further, cultured EPCs from patients with diabetes exhibited decreased MT expression, increased cell apoptosis, and impaired tube formation, while cultured JTMT EPCs had enhanced cell survival, migration, and tube formation in hypoxic/hyperglycemic conditions compared with WT EPCs. Mechanistically, MT overexpression enhanced hypoxia-inducible factor 1α (HIF-1α), stromal cell-derived factor (SDF-1), and vascular endothelial growth factor (VEGF) expression and reduced oxidative stress in ischemic tissues. MT's pro-EPC effects were abrogated by siRNA knockdown of HIF-1α without affecting its antioxidant action. These results indicate that endothelial MT overexpression is sufficient to protect against diabetes-induced impairment of angiogenesis by promoting EPC function, most likely through upregulation of HIF-1α/SDF-1/VEGF signaling and reducing oxidative stress.
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MESH Headings
- Animals
- Blotting, Western
- Cell Survival/genetics
- Cell Survival/physiology
- Chemokine CXCL12/genetics
- Chemokine CXCL12/metabolism
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/prevention & control
- Endothelial Progenitor Cells/metabolism
- Enzyme-Linked Immunosorbent Assay
- Female
- Hindlimb/pathology
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Ischemia/genetics
- Ischemia/metabolism
- Leukocytes, Mononuclear/metabolism
- Male
- Metallothionein/genetics
- Metallothionein/metabolism
- Mice
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/prevention & control
- Oxidative Stress/genetics
- Oxidative Stress/physiology
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
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Affiliation(s)
- Kai Wang
- Department of Pediatrics, Endocrinology and Metabolism, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
| | - Xiaozhen Dai
- School of Bioscience and Technology, Chengdu Medical College, Chengdu, China
| | - Junhong He
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
- Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaoqing Yan
- Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Chengkui Yang
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
| | - Xia Fan
- Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Shiyue Sun
- Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jing Chen
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
| | - Jianxiang Xu
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
| | - Zhongbin Deng
- Department of Medicine, School of Medicine, University of Louisville, Louisville, KY
| | - Jiawei Fan
- School of Bioscience and Technology, Chengdu Medical College, Chengdu, China
| | - Xiaohuan Yuan
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
- Heilongjiang Key Laboratory of Tissue Damage and Repair, Mudanjiang Medical University, Heilongjiang, China
| | - Hairong Liu
- Experimental Research Center, the First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan, China
| | - Edward C Carlson
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, ND
| | - Feixia Shen
- Department of Pediatrics, Endocrinology and Metabolism, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Kupper A Wintergerst
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
- Division of Endocrinology, Department of Pediatrics, University of Louisville, Norton Children's Medical Group, Louisville, KY
- Wendy Novak Diabetes Center, Louisville, KY
| | - Daniel J Conklin
- Department of Medicine, School of Medicine, University of Louisville, Louisville, KY
- Diabetes and Obesity Center, University of Louisville, Louisville, KY
| | - Paul N Epstein
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
- Wendy Novak Diabetes Center, Louisville, KY
| | - Chaosheng Lu
- Department of Pediatrics, Endocrinology and Metabolism, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yi Tan
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY
- Wendy Novak Diabetes Center, Louisville, KY
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8
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Chen X, Zhang Z, Wang X, Chen Y, Wang C. NT5C2 Gene Polymorphisms and the Risk of Coronary Heart Disease. Public Health Genomics 2020; 23:90-99. [PMID: 32541135 DOI: 10.1159/000507714] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/30/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Increasing studies have reported that 5'-nucleotidase cytosolic II (NT5C2) has a strong relationship with coronary heart disease (CHD) development. This study was designed to examine the relationship between NT5C2 polymorphisms and CHD in the Chinese Han population. METHODS We studied 501 CHD patients and 496 healthy controls from the Second Affiliated Hospital of Hainan Medical University in Hainan Province, China. Four single nucleotide polymorphisms (SNPs) in NT5C2 were selected and genotyped using Agena MassARRAY technology. Odds ratios and 95% confidence intervals were calculated using logistic regression after adjusting for age and gender. Stratification analysis was performed by age and gender in all individuals; we especially investigated the effects of NT5C2 SNPs on hypertension and diabetes among CHD patients. RESULTS rs2148198 of NT5C2 was strongly associated with an increased risk of CHD (allele: p = 0.045; codominant: p = 0.007; additive: p = 0.016). Stratified analysis revealed that rs2148198 was associated with increased CHD risk in individuals aged ≤61 years and males. For CHD patients, rs2148198 significantly affected the risk of hypertension and diabetes (p < 0.05). Further, rs79237883 of NT5C2 was associated with decreased susceptibility to hypertension in multiple genetic models for individuals with CHD (allele: p = 0.007; codominant: p = 0.001; dominant: p = 0.001; additive: p = 0.008). CONCLUSION This study reports the association of NT5C2 gene variants and CHD susceptibility in the Chinese Han population. Especially, NT5C2 rs2148198 was significantly associated with CHD risk in the subgroups of males, hypertension, and diabetes.
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Affiliation(s)
- Xianghong Chen
- Department of General Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Zaozhang Zhang
- Department of General Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Xingfan Wang
- Department of Rehabilitative Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yuewu Chen
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Chao Wang
- Department of General Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China,
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9
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Lu S, Zhong J, Zhang Y, Huang K, Wu M, Zhou Y, Li Q, Chen Z, Zhang S, Zhou H. CYP17A1 Polymorphisms Are Linked to the Risk of Coronary Heart Disease in a Case-Control Study. J Cardiovasc Pharmacol 2020; 74:98-104. [PMID: 31356544 DOI: 10.1097/fjc.0000000000000687] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Cytochrome P450 17A1 (CYP17A1) catalyzes the formation and metabolism of steroid hormones and is required for cortisol and androgens. There is increasing evidence that CYP17A1 plays an important role in the development of coronary heart disease (CHD). However, the association of CYP17A1 polymorphisms and CHD susceptibility is still not clear. METHODS We conducted a case-control study with 396 CHD cases and 461 healthy controls from Hainan province, China. Using the Agena MassARRAY platform, we genotyped 4 genetic variants (rs3740397, rs1004467, rs4919687, and rs3781286) in CYP17A1. Logistic regression analysis was used to assess the association of CYP17A1 polymorphisms with CHD risk by odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS It showed that A allele of CYP17A1 rs4919687 carried with a 1.59-fold increased risk of CHD (OR = 1.59; 95% CI = 1.26-1.99; P < 0.001). Also, rs4919687 was significantly associated with CHD risk under various models (homozygote: OR = 3.60; 95% CI = 1.64-7.83; P = 0.001; dominant: OR = 1.51; 95% CI = 1.06-2.13; P = 0.021; recessive: OR = 3.28; 95% CI = 1.51-7.14; P = 0.003; additive: OR = 1.56; 95% CI = 1.17-2.07; P = 0.002). Moreover, analysis showed that Ars1004467 Ars4919687 haplotype was a protective factor of CHD (OR = 0.64; 95% CI = 0.48-0.86; P = 0.002). CONCLUSIONS Our study suggests that CYP17A1 polymorphisms are associated with CHD susceptibility in the Hainan Han Chinese population.
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Affiliation(s)
- Shijuan Lu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Jianghua Zhong
- Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Yingai Zhang
- Central Laboratory, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Kang Huang
- Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Miao Wu
- Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Yilei Zhou
- Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Qiang Li
- Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Zibin Chen
- Department of Cardiology, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Shufang Zhang
- Central Laboratory, Haikou People's Hospital, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Honghao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
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10
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Schneller D, Hofer-Warbinek R, Sturtzel C, Lipnik K, Gencelli B, Seltenhammer M, Wen M, Testori J, Bilban M, Borowski A, Windwarder M, Kapel SS, Besemfelder E, Cejka P, Habertheuer A, Schlechta B, Majdic O, Altmann F, Kocher A, Augustin HG, Luttmann W, Hofer E. Cytokine-Like 1 Is a Novel Proangiogenic Factor Secreted by and Mediating Functions of Endothelial Progenitor Cells. Circ Res 2019; 124:243-255. [PMID: 30582450 DOI: 10.1161/circresaha.118.313645] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
RATIONALE Endothelial colony forming cells (ECFCs) or late blood outgrowth endothelial cells can be isolated from human cord or peripheral blood, display properties of endothelial progenitors, home into ischemic tissues and support neovascularization in ischemic disease models. OBJECTIVE To assess the functions of CYTL1 (cytokine-like 1), a factor we found preferentially produced by ECFCs, in regard of vessel formation. METHODS AND RESULTS We show by transcriptomic analysis that ECFCs are distinguished from endothelial cells of the vessel wall by production of high amounts of CYTL1. Modulation of expression demonstrates that the factor confers increased angiogenic sprouting capabilities to ECFCs and can also trigger sprouting of mature endothelial cells. The data further display that CYTL1 can be induced by hypoxia and that it functions largely independent of VEGF-A (vascular endothelial growth factor-A). By recombinant production of CYTL1 we confirm that the peptide is indeed a strong proangiogenic factor and induces sprouting in cellular assays and functional vessel formation in animal models comparable to VEGF-A. Mass spectroscopy corroborates that CYTL1 is specifically O-glycosylated on 2 neighboring threonines in the C-terminal part and this modification is important for its proangiogenic bioactivity. Further analyses show that the factor does not upregulate proinflammatory genes and strongly induces several metallothionein genes encoding anti-inflammatory and antiapoptotic proteins. CONCLUSIONS We conclude that CYTL1 can mediate proangiogenic functions ascribed to endothelial progenitors such as ECFCs in vivo and may be a candidate to support vessel formation and tissue regeneration in ischemic pathologies.
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Affiliation(s)
- Doris Schneller
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria.,Division Signal Transduction and Growth Control, German Cancer Research Center (DKFZ), Heidelberg (D.S.)
| | - Renate Hofer-Warbinek
- Clinical Department for Heart Surgery (R.H.-W., A.H., A.K.), Medical University of Vienna, Austria
| | - Caterina Sturtzel
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
| | - Karoline Lipnik
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
| | - Burcu Gencelli
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
| | - Monika Seltenhammer
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
| | - Mingjie Wen
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
| | - Julia Testori
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
| | - Martin Bilban
- Department of Laboratory Medicine (M.B.), Medical University of Vienna, Austria
| | | | - Markus Windwarder
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria (M. Windwarder, F.A.)
| | - Stephanie S Kapel
- Division of Vascular Oncology and Metastasis, German Cancer Research Center (DKFZ-ZMBH Alliance), Heidelberg, Germany (S.S.K., E.B., H.G.A.).,Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Germany (S.S.K., H.G.A.)
| | - Eva Besemfelder
- Division of Vascular Oncology and Metastasis, German Cancer Research Center (DKFZ-ZMBH Alliance), Heidelberg, Germany (S.S.K., E.B., H.G.A.)
| | - Petra Cejka
- Department of Immunology (P.C., O.M.), Medical University of Vienna, Austria
| | - Andreas Habertheuer
- Clinical Department for Heart Surgery (R.H.-W., A.H., A.K.), Medical University of Vienna, Austria
| | - Bernhard Schlechta
- Department of Gynecology and Obstetrics (B.S.), Medical University of Vienna, Austria
| | - Otto Majdic
- Department of Immunology (P.C., O.M.), Medical University of Vienna, Austria
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria (M. Windwarder, F.A.)
| | - Alfred Kocher
- Clinical Department for Heart Surgery (R.H.-W., A.H., A.K.), Medical University of Vienna, Austria
| | - Hellmut G Augustin
- Division of Vascular Oncology and Metastasis, German Cancer Research Center (DKFZ-ZMBH Alliance), Heidelberg, Germany (S.S.K., E.B., H.G.A.).,Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Germany (S.S.K., H.G.A.)
| | | | - Erhard Hofer
- From the Department of Vascular Biology and Thrombosis Research (D.S., C.S., K.L., B.G., M.S., M. Wen, J.T., E.H.), Medical University of Vienna, Austria
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11
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Ge T, Yu Y, Cui J, Cai L. The adaptive immune role of metallothioneins in the pathogenesis of diabetic cardiomyopathy: good or bad. Am J Physiol Heart Circ Physiol 2019; 317:H264-H275. [PMID: 31100011 DOI: 10.1152/ajpheart.00123.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Diabetes is a metabolic disorder characterized by hyperglycemia, resulting in low-grade systemic inflammation. Diabetic cardiomyopathy (DCM) is a common complication among diabetic patients, and the mechanism underlying its induction of cardiac remodeling and dysfunction remains unclear. Numerous experimental and clinical studies have suggested that adaptive immunity, especially T lymphocyte-mediated immunity, plays a potentially important role in the pathogenesis of diabetes and DCM. Metallothioneins (MTs), cysteine-rich, metal-binding proteins, have antioxidant properties. Some potential mechanisms underlying the cardioprotective effects of MTs include the role of MTs in calcium regulation, zinc homeostasis, insulin sensitization, and antioxidant activity. Moreover, metal homeostasis, especially MT-regulated zinc homeostasis, is essential for immune function. This review discusses aberrant immune regulation in diabetic heart disease with respect to endothelial insulin resistance and the effects of hyperglycemia and hyperlipidemia on tissues and the different effects of intracellular and extracellular MTs on adaptive immunity. This review shows that intracellular MTs are involved in naïve T-cell activation and reduce regulatory T-cell (Treg) polarization, whereas extracellular MTs promote proliferation and survival in naïve T cells and Treg polarization but inhibit their activation, thus revealing potential therapeutic strategies targeting the regulation of immune cell function by MTs.
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Affiliation(s)
- Tingwen Ge
- Cancer Center, First Hospital of Jilin University , Changchun, Jilin , China.,Pediatric Research Institute, Department of Pediatrics, University of Louisville, Norton Health Care, Louisville, Kentucky
| | - Youxi Yu
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Norton Health Care, Louisville, Kentucky.,Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jilin University , Changchun, Jilin , China
| | - Jiuwei Cui
- Cancer Center, First Hospital of Jilin University , Changchun, Jilin , China
| | - Lu Cai
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Norton Health Care, Louisville, Kentucky.,Departments of Radiation Oncology, Pharmacology and Toxicology, University of Louisville , Louisville, Kentucky
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12
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Zhou M, Gao M, Luo Y, Gui R, Ji H. Long non-coding RNA metallothionein 1 pseudogene 3 promotes p2y12 expression by sponging miR-126 to activate platelet in diabetic animal model. Platelets 2018; 30:452-459. [PMID: 29617185 DOI: 10.1080/09537104.2018.1457781] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Platelet hyperaggregation and hypercoagulation are associated with increase of thrombogenic risk, especially in patients with type 2 diabetes (T2D). High activity of P2Y12 receptor is found in T2D patients, exposing such patients to a prothrombotic condition. P2Y12 is a promising target for antiplatelet, but due to P2Y12 receptor constitutive activation, the clinical practical phenomena such as "clopidogrel resistance" are commonly occurring. In this study, we investigate the role of lncRNA on platelet activation. By lncRNA array, we screened thousands of differentially expressed lncRNA in megakaryocytes from T2D patients and confirmed that lncRNA metallothionein 1 pseudogene 3 (MT1P3) was significantly upregulated in megakaryocytes from T2D patients than in healthy controls. And we further investigate the biofunction of MT1P3 on platelet activation and the regulatory mechanism on p2y12. MT1P3 was positively correlated with p2y12 mRNA levels and promoted p2y12 expression by sponging miR-126. Knockdown of MT1P3 by siRNA reduced p2y12 expression, inhibiting platelet activation and aggregation in diabetes animal model. In conclusion, our findings identify MT1P3 as a key regulator in platelet activation by increasing p2y12 expression through sponging miR-126 under T2D condition. These findings may provide a new insight for managing platelet hyperactivity-related diseases.
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Affiliation(s)
- Ming Zhou
- a Department of Hematology , Hunan Provincial People's Hospital, The first affiliated hospital of Hunan normal University , Hunan Province , China
| | - Meng Gao
- b Department of Transfusion , The Third Xiangya Hospital, Central South University , Changsha , China
| | - Yanwei Luo
- b Department of Transfusion , The Third Xiangya Hospital, Central South University , Changsha , China
| | - Rong Gui
- b Department of Transfusion , The Third Xiangya Hospital, Central South University , Changsha , China
| | - Hongwen Ji
- c Department of Anesthesiology , Transfusion Medicine, Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College , Beijing , China
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13
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Giacconi R, Cai L, Costarelli L, Cardelli M, Malavolta M, Piacenza F, Provinciali M. Implications of impaired zinc homeostasis in diabetic cardiomyopathy and nephropathy. Biofactors 2017; 43:770-784. [PMID: 28845600 DOI: 10.1002/biof.1386] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/12/2017] [Accepted: 07/27/2017] [Indexed: 12/18/2022]
Abstract
Impaired zinc homeostasis is observed in diabetes mellitus (DM2) and its complications. Zinc has a specific role in pancreatic β-cells via insulin synthesis, storage, and secretion. Intracellular zinc homeostasis is tightly controlled by zinc transporters (ZnT and Zip families) and metallothioneins (MT) which modulate the uptake, storage, and distribution of zinc. Several investigations in animal models demonstrate the protective role of MT in DM2 and its cardiovascular or renal complications, while a copious literature shows that a common polymorphism (R325W) in ZnT8, which affects the protein's zinc transport activity, is associated with increased DM2 risk. Emerging studies highlight a role of other zinc transporters in β-cell function, suggesting that targeting them could make a possible contribution in managing the hyperglycemia in diabetic patients. This article summarizes the current findings concerning the role of zinc homeostasis in DM2 pathogenesis and development of diabetic cardiomyopathy and nephropathy and suggests novel therapeutic targets. © 2017 BioFactors, 43(6):770-784, 2017.
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Affiliation(s)
- Robertina Giacconi
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Lu Cai
- Pediatric Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA
| | - Laura Costarelli
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Maurizio Cardelli
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Marco Malavolta
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Francesco Piacenza
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
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14
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Ozyıldırım S, Baltaci AK, Sahna E, Mogulkoc R. Effects of Chronic and Acute Zinc Supplementation on Myocardial Ischemia-Reperfusion Injury in Rats. Biol Trace Elem Res 2017; 178:64-70. [PMID: 27909864 DOI: 10.1007/s12011-016-0903-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 11/22/2016] [Indexed: 10/20/2022]
Abstract
The present study aims to explore the effects of chronic and acute zinc sulfate supplementation on myocardial ischemia-reperfusion injury in rats. The study registered 50 adult male rats which were divided into five groups in equal numbers as follows: group 1, normal control; group 2, sham; group 3, myocardial ischemia reperfusion (My/IR): the group which was fed on a normal diet and in which myocardial I/R was induced; group 4, myocardial ischemia reperfusion + chronic zinc: (5 mg/kg i.p. zinc sulfate for 15 days); and group 5, myocardial ischemia reperfusion + acute zinc: the group which was administered 15 mg/kg i.p. zinc sulfate an hour before the operation and in which myocardial I/R was induced. The collected blood and cardiac tissue samples were analyzed using spectrophotometric method to determine levels of MDA, as an indicator of tissue injury, and GSH, as an indicator of antioxidant activity. The highest plasma and heart tissue MDA levels were measured in group 3 (p < 0.05). Group 5 had lower MDA values than group 3, while group 4 had significantly lower MDA values than groups 3 and 5 (p < 0.05). The highest erythrocyte GSH values were found in group 4 (p < 0.05). Erythrocyte GSH values in group 5 were higher than those in group 3 (p < 0.05). The highest GSH values in heart tissue were measured in group 4 (p < 0.05). The results of the study reveal that the antioxidant activity inhibited by elevated oxidative stress in heart ischemia reperfusion in rats is restored partially by acute zinc administration and markedly by chronic zinc supplementation.
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Affiliation(s)
| | | | - Engin Sahna
- Medical Faculty, Department of Pharmacology, Firat University, Elazıg, Turkey
| | - Rasim Mogulkoc
- Medical Faculty, Department of Physiology, Selcuk University, 42031, Konya, Turkey
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15
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Huang X, Zuo L, Lv Y, Chen C, Yang Y, Xin H, Li Y, Qian Y. Asiatic Acid Attenuates Myocardial Ischemia/Reperfusion Injury via Akt/GSK-3β/HIF-1α Signaling in Rat H9c2 Cardiomyocytes. Molecules 2016; 21:molecules21091248. [PMID: 27657024 PMCID: PMC6273770 DOI: 10.3390/molecules21091248] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/13/2016] [Accepted: 09/16/2016] [Indexed: 12/11/2022] Open
Abstract
Myocardial ischemic/reperfusion injury results from severe impairment of coronary blood supply and leads to irreversible cell death, with limited therapeutic possibilities. Asiatic acid is a pentacyclic triterpenoid derived from the tropical medicinal plant Centella asiatica and serves a variety of bioactivities. In this study, we determined the effect of asiatic acid on myocardial ischemia/reperfusion injury and investigated the underlying mechanisms, using an in vitro rat H9c2 cardiomyocytes model of oxygen-glucose deprivation/reoxygenation (OGD/R) injury. Results showed that pre-treatment with asiatic acid significantly augmented cell viability and prevented lactate dehydrogenase (LDH) release in a concentration-dependent manner after OGD/R exposure. Asiatic acid at 10 μM effectively inhibited apoptotic cell death, suppressed the activities of caspase-3 and caspase-9, and reversed Bax/Bcl-2 ratio in hypoxic H9c2 cells. In addition, asiatic acid improved mitochondrial function, as evidenced by reduced reactive oxygen species (ROS) accumulation, enhanced mitochondrial membrane potential and decreased intracellular calcium concentration. Using Western blot assay, we found that asiatic acid promoted the phosphorylation of Akt and subsequent inactivation of glycogen synthase kinase-3β (GSK-3β), and induced the expression of hypoxia-inducible factor 1α (HIF-1α) after OGD/R. The cardioprotective effects of asiatic acid were attenuated by the Akt or HIF-1α inhibitor. Taken together, these data suggested that asiatic acid exerted protective effects against OGD/R-induced apoptosis in cardiomyocytes, at least partly via the Akt/GSK-3β/HIF-1α pathway.
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Affiliation(s)
- Xiang Huang
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Li Zuo
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Yanni Lv
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang 330006, China.
| | - Chuqiao Chen
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Yaqin Yang
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Hongbo Xin
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Yunman Li
- Department of Physiology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China.
| | - Yisong Qian
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
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16
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Mansor LS, Mehta K, Aksentijevic D, Carr CA, Lund T, Cole MA, Le Page L, Sousa Fialho MDL, Shattock MJ, Aasum E, Clarke K, Tyler DJ, Heather LC. Increased oxidative metabolism following hypoxia in the type 2 diabetic heart, despite normal hypoxia signalling and metabolic adaptation. J Physiol 2016; 594:307-20. [PMID: 26574233 PMCID: PMC4713751 DOI: 10.1113/jp271242] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/10/2015] [Indexed: 01/13/2023] Open
Abstract
KEY POINTS Adaptation to hypoxia makes the heart more oxygen efficient, by metabolising more glucose. In contrast, type 2 diabetes makes the heart metabolise more fatty acids. Diabetes increases the chances of the heart being exposed to hypoxia, but whether the diabetic heart can adapt and respond is unknown. In this study we show that diabetic hearts retain the ability to adapt their metabolism in response to hypoxia, with functional hypoxia signalling pathways. However, the hypoxia-induced changes in metabolism are additive to abnormal baseline metabolism, resulting in hypoxic diabetic hearts metabolising more fat and less glucose than controls. This stops the diabetic heart being able to recover its function when stressed. These results demonstrate that the diabetic heart retains metabolic flexibility to adapt to hypoxia, but is hindered by the baseline effects of the disease. This increases our understanding of how the diabetic heart is affected by hypoxia-associated complications of the disease. ABSTRACT Hypoxia activates the hypoxia-inducible factor (HIF), promoting glycolysis and suppressing mitochondrial respiration. In the type 2 diabetic heart, glycolysis is suppressed whereas fatty acid metabolism is promoted. The diabetic heart experiences chronic hypoxia as a consequence of increased obstructive sleep apnoea and cardiovascular disease. Given the opposing metabolic effects of hypoxia and diabetes, we questioned whether diabetes affects cardiac metabolic adaptation to hypoxia. Control and type 2 diabetic rats were housed for 3 weeks in normoxia or 11% oxygen. Metabolism and function were measured in the isolated perfused heart using radiolabelled substrates. Following chronic hypoxia, both control and diabetic hearts upregulated glycolysis, lactate efflux and glycogen content and decreased fatty acid oxidation rates, with similar activation of HIF signalling pathways. However, hypoxia-induced changes were superimposed on diabetic hearts that were metabolically abnormal in normoxia, resulting in glycolytic rates 30% lower, and fatty acid oxidation 36% higher, in hypoxic diabetic hearts than hypoxic controls. Peroxisome proliferator-activated receptor α target proteins were suppressed by hypoxia, but activated by diabetes. Mitochondrial respiration in diabetic hearts was divergently activated following hypoxia compared with controls. These differences in metabolism were associated with decreased contractile recovery of the hypoxic diabetic heart following an acute hypoxic insult. In conclusion, type 2 diabetic hearts retain metabolic flexibility to adapt to hypoxia, with normal HIF signalling pathways. However, they are more dependent on oxidative metabolism following hypoxia due to abnormal normoxic metabolism, which was associated with a functional deficit in response to stress.
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Affiliation(s)
- Latt S Mansor
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Keshavi Mehta
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Dunja Aksentijevic
- British Heart Foundation Centre of Research Excellence, King's College London, The Rayne Institute, London, UK
| | - Carolyn A Carr
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Trine Lund
- Department of Medical Biology, University of Tromso, Norway
| | - Mark A Cole
- University of Nottingham Medical School, Queens Medical Centre, Nottingham, UK
| | - Lydia Le Page
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | | | - Michael J Shattock
- British Heart Foundation Centre of Research Excellence, King's College London, The Rayne Institute, London, UK
| | - Ellen Aasum
- Department of Medical Biology, University of Tromso, Norway
| | - Kieran Clarke
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Damian J Tyler
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Lisa C Heather
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
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17
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Catrina SB, Zheng X. Disturbed hypoxic responses as a pathogenic mechanism of diabetic foot ulcers. Diabetes Metab Res Rev 2016; 32 Suppl 1:179-85. [PMID: 26453314 DOI: 10.1002/dmrr.2742] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/15/2015] [Accepted: 09/20/2015] [Indexed: 12/24/2022]
Abstract
Diabetic foot ulceration (DFU) is a chronic complication of diabetes that is characterized by impaired wound healing in the lower extremities. DFU remains a major clinical challenge because of poor understanding of its pathogenic mechanisms. Impaired wound healing in diabetes is characterized by decreased angiogenesis, reduced bone marrow-derived endothelial progenitor cell (EPC) recruitment, and decreased fibroblast and keratinocyte proliferation and migration. Recently, increasing evidence has suggested that increased hypoxic conditions and impaired cellular responses to hypoxia are essential pathogenic factors of delayed wound healing in DFU. Hypoxia-inducible factor-1 (HIF-1, a heterodimer of HIF-1α and HIF-1β) is a master regulator of oxygen homeostasis that mediates the adaptive cellular responses to hypoxia by regulating the expression of genes involved in angiogenesis, metabolic changes, proliferation, migration, and cell survival. However, HIF-1 signalling is inhibited in diabetes as a result of hyperglycaemia-induced HIF-1α destabilization and functional repression. Increasing HIF-1α expression and activity using various approaches promotes angiogenesis, EPC recruitment, and granulation, thereby improving wound healing in experimental diabetes. The mechanisms underlying HIF-1α regulation in diabetes and the therapeutic strategies targeting HIF-1 signalling for the treatment of diabetic wounds are discussed in this review. Further investigations of the pathways involved in HIF-1α regulation in diabetes are required to advance our understanding of the mechanisms underlying impaired wound healing in diabetes and to provide a foundation for developing novel therapeutic approaches to treat DFU.
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Affiliation(s)
- Sergiu-Bogdan Catrina
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Xiaowei Zheng
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
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18
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Regulation of cellular oxidative stress and apoptosis by G protein-coupled receptor kinase-2; The role of NADPH oxidase 4. Cell Signal 2015; 28:190-203. [PMID: 26631573 DOI: 10.1016/j.cellsig.2015.11.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 11/13/2015] [Accepted: 11/25/2015] [Indexed: 11/23/2022]
Abstract
Cardiac myocyte oxidative stress and apoptosis are considered important mechanisms for the development of heart failure (HF). Chronic HF is characterized by increased circulating catecholamines to augment cardiac output. Long-term stimulation of myocardial β-adrenergic receptors (β-ARs) is deleterious in cardiac myocytes, however, the potential mechanisms underlying increased cell death are unclear. We hypothesize that GRK2, a critical regulator of myocardial β-AR signaling, plays an important role in mediating cellular oxidative stress and apoptotic cell death in response to β-agonist stimulation. Stimulation of H9c2 cells with a non-selective β-agonist, isoproterenol (Iso) caused increased oxidative stress and apoptosis. There was also increased Nox4 expression, but no change in Nox2, the primary NADPH isoforms and major sources of ROS generation in cardiac myocytes. Adenoviral-mediated overexpression of GRK2 led to similar increases in ROS production and apoptosis as seen with Iso stimulation. These increases in oxidative stress were abolished by pre-treatment with the non-specific Nox inhibitor, apocynin, or siRNA knockdown of Nox4. Adenoviral-mediated expression of a GRK2 inhibitor prevented ROS production and apoptosis in response to Iso stimulation. β-Arrestins are signaling proteins that function downstream of GRK2 in β-AR uncoupling. Adenoviral-mediated overexpression of β-arrestins increased ROS production and Nox4 expression. Chronic β-agonist stimulation in mice increased Nox4 expression and apoptosis compared to PBS or AngII treatment. These data demonstrate that GRK2 may play an important role in regulating oxidative stress and apoptosis in cardiac myocytes and provides an additional novel mechanism for the beneficial effects of cardiac-targeted GRK2 inhibition to prevent the development of HF.
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19
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Schuermann A, Helker CSM, Herzog W. Metallothionein 2 regulates endothelial cell migration through transcriptional regulation of vegfc expression. Angiogenesis 2015. [PMID: 26198291 PMCID: PMC4596909 DOI: 10.1007/s10456-015-9473-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Analysis of developmental angiogenesis can help to identify regulatory networks, which also contribute to disease-related vascular growth. Vascular endothelial growth factors (Vegf) drive angiogenic processes such as sprouting, endothelial cell (EC) migration and proliferation. However, how Vegf expression is regulated during development is not well understood. By analyzing developmental zebrafish angiogenesis, we have identified Metallothionein 2 (Mt2) as a novel regulator of vegfc expression. While Metallothioneins (Mts) have been extensively analyzed for their capability of regulating homeostasis and metal detoxification, we demonstrate that Mt2 is required for EC migration, proliferation and angiogenic sprouting upstream of vegfc expression. We further demonstrate that another Mt family member cannot compensate Mt2 deficiency and therefore postulate that Mt2 regulates angiogenesis independent of its canonical Mt function. Our data not only reveal a non-canonical function of Mt2 in angiogenesis, but also propose Mt2 as a novel regulator of vegfc expression.
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Affiliation(s)
- Annika Schuermann
- University of Muenster, Muenster, Germany.,Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Muenster, Germany
| | - Christian S M Helker
- University of Muenster, Muenster, Germany.,Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Wiebke Herzog
- University of Muenster, Muenster, Germany. .,Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Muenster, Germany. .,Max-Planck-Institute for Molecular Biomedicine, Muenster, Germany.
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20
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Sárközy M, Szűcs G, Pipicz M, Zvara Á, Éder K, Fekete V, Szűcs C, Bárkányi J, Csonka C, Puskás LG, Kónya C, Ferdinandy P, Csont T. The effect of a preparation of minerals, vitamins and trace elements on the cardiac gene expression pattern in male diabetic rats. Cardiovasc Diabetol 2015; 14:85. [PMID: 26126619 PMCID: PMC4499218 DOI: 10.1186/s12933-015-0248-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 06/17/2015] [Indexed: 02/06/2023] Open
Abstract
Background Diabetic patients have an increased risk of developing cardiovascular diseases, which are the leading cause of death in developed countries. Although multivitamin products are widely used as dietary supplements, the effects of these products have not been investigated in the diabetic heart yet. Therefore, here we investigated if a preparation of different minerals, vitamins, and trace elements (MVT) affects the cardiac gene expression pattern in experimental diabetes. Methods Two-day old male Wistar rats were injected with streptozotocin (i.p. 100 mg/kg) or citrate buffer to induce diabetes. From weeks 4 to 12, rats were fed with a vehicle or a MVT preparation. Fasting blood glucose measurement and oral glucose tolerance test were performed at week 12, and then total RNA was isolated from the myocardium and assayed by rat oligonucleotide microarray for 41012 oligonucleotides. Results Significantly elevated fasting blood glucose concentration and impaired glucose tolerance were markedly improved by MVT-treatment in diabetic rats at week 12. Genes with significantly altered expression due to diabetes include functional clusters related to cardiac hypertrophy (e.g. caspase recruitment domain family, member 9; cytochrome P450, family 26, subfamily B, polypeptide; FXYD domain containing ion transport regulator 3), stress response (e.g. metallothionein 1a; metallothionein 2a; interleukin-6 receptor; heme oxygenase (decycling) 1; and glutathione S-transferase, theta 3), and hormones associated with insulin resistance (e.g. resistin; FK506 binding protein 5; galanin/GMAP prepropeptide). Moreover the expression of some other genes with no definite cardiac function was also changed such as e.g. similar to apolipoprotein L2; brain expressed X-linked 1; prostaglandin b2 synthase (brain). MVT-treatment in diabetic rats showed opposite gene expression changes in the cases of 19 genes associated with diabetic cardiomyopathy. In healthy hearts, MVT-treatment resulted in cardiac gene expression changes mostly related to immune response (e.g. complement factor B; complement component 4a; interferon regulatory factor 7; hepcidin). Conclusions MVT-treatment improved diagnostic markers of diabetes. This is the first demonstration that MVT-treatment significantly alters cardiac gene expression profile in both control and diabetic rats. Our results and further studies exploring the mechanistic role of individual genes may contribute to the prevention or diagnosis of cardiac complications in diabetes. Electronic supplementary material The online version of this article (doi:10.1186/s12933-015-0248-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Márta Sárközy
- Department of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | - Gergő Szűcs
- Department of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | - Márton Pipicz
- Department of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | - Ágnes Zvara
- Institute of Genetics, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary.
| | - Katalin Éder
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary.
| | - Veronika Fekete
- Department of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | | | | | - Csaba Csonka
- Department of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | - László G Puskás
- Institute of Genetics, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary.
| | - Csaba Kónya
- Béres Pharmaceuticals Ltd, Budapest, Hungary.
| | - Péter Ferdinandy
- Pharmahungary Group, Szeged, Hungary. .,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary.
| | - Tamás Csont
- Department of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary.
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21
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McCarty MF, DiNicolantonio JJ. The protection conferred by chelation therapy in post-MI diabetics might be replicated by high-dose zinc supplementation. Med Hypotheses 2015; 84:451-5. [DOI: 10.1016/j.mehy.2015.01.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 01/23/2015] [Accepted: 01/26/2015] [Indexed: 12/20/2022]
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22
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Schulkens IA, Castricum KCM, Weijers EM, Koolwijk P, Griffioen AW, Thijssen VL. Expression, regulation and function of human metallothioneins in endothelial cells. J Vasc Res 2014; 51:231-8. [PMID: 25116857 DOI: 10.1159/000365550] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 06/23/2014] [Indexed: 11/19/2022] Open
Abstract
Metallothioneins (MTs) are small cysteine-rich proteins which are involved in e.g. metal homeostasis, metal detoxification and protection against oxidative stress. In addition, several MTs have been shown to regulate expression of proangiogenic growth factors like vascular endothelial growth factor. Detailed information about the expression and regulation of specific MT isoforms in endothelial cells (EC) is limited. We therefore performed extensive mRNA expression profiling of all known human MTs in EC. We found that the basal endothelial expression is restricted to MT1E, MT1X, MT2A, and MT3. Physiological activation of EC by exposure to serum increased the expression of MT1E and MT2A and induced the expression of MT1M. Furthermore, exposure to zinc or copper induced the expression of most MT1 isoforms, while hypoxia specifically increased the expression of MT1E, MT1M, MT1X, and MT3. Finally, knockdown of the dominant MT isoform in EC, i.e. MT2A, resulted in decreased proliferation and sprouting as well as in increased migration of human umbilical vein EC. Together, these findings provide a link between MTs and angiogenesis.
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Affiliation(s)
- Iris A Schulkens
- Angiogenesis Laboratory, Department of Medical Oncology, VU University Medical Center, Amsterdam, The Netherlands
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23
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Wang Y, Zhou S, Sun W, McClung K, Pan Y, Liang G, Tan Y, Zhao Y, Liu Q, Sun J, Cai L. Inhibition of JNK by novel curcumin analog C66 prevents diabetic cardiomyopathy with a preservation of cardiac metallothionein expression. Am J Physiol Endocrinol Metab 2014; 306:E1239-47. [PMID: 24714399 DOI: 10.1152/ajpendo.00629.2013] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The development of diabetic cardiomyopathy is attributed to diabetic oxidative stress, which may be related to the mitogen-activated protein kinase (MAPK) c-Jun NH2-terminal kinase (JNK) activation. The present study tested a hypothesis whether the curcumin analog C66 [(2E,6E)-2,6-bis(2-(trifluoromethyl)benzylidene) cyclohexanone] as a potent antioxidant can protect diabetes-induced cardiac functional and pathogenic changes via inhibition of JNK function. Diabetes was induced with a single intraperitoneal injection of streptozotocin in male C57BL/6 mice. Diabetic and age-matched control mice were randomly divided into three groups, each group treated with C66, JNK inhibitor (JNKi, SP600125), or vehicle (1% CMC-Na solution) by gavage at 5 mg/kg every other day for 3 mo. Neither C66 nor JNKi impacted diabetic hyperglycemia and inhibition of body-weight gain, but both significantly prevented diabetes-induced JNK phosphorylation in the heart. Compared with basal line, cardiac function was significantly decreased in diabetic mice at 3 mo of diabetes but not in C66- or JNKi-treated diabetic mice. Cardiac fibrosis, oxidative damage, endoplasmic reticulum stress, and cell apoptosis, examined by Sirius red staining, Western blot, and thiobarbituric acid assay, were also significantly increased in diabetic mice, all which were prevented by C66 or JNKi treatment under diabetic conditions. Cardiac metallothionein expression was significantly decreased in diabetic mice but was almost normal in C66- or JNKi-treated diabetic mice. These results suggest that, like JNKi, C66 is able to prevent diabetic upregulation of JNK function, resulting in a prevention of diabetes-induced cardiac fibrosis, oxidative stress, endoplasmic reticulum stress, and cell death, along with a preservation of cardiac metallothionein expression.
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Affiliation(s)
- Yonggang Wang
- The First Hospital of Jilin University, Changchun, China; Kosair Children's Hospital Research Institute, Department of Pediatrics, University of Louisville, Louisville, Kentucky
| | - Shanshan Zhou
- The First Hospital of Jilin University, Changchun, China; Kosair Children's Hospital Research Institute, Department of Pediatrics, University of Louisville, Louisville, Kentucky
| | - Wanqing Sun
- The First Hospital of Jilin University, Changchun, China
| | - Kristen McClung
- Kosair Children's Hospital Research Institute, Department of Pediatrics, University of Louisville, Louisville, Kentucky
| | - Yong Pan
- The Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, China; Chemical Biology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yi Tan
- Kosair Children's Hospital Research Institute, Department of Pediatrics, University of Louisville, Louisville, Kentucky; The Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, China; Departments of Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky; and
| | - Yunjie Zhao
- Chemical Biology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Quan Liu
- The First Hospital of Jilin University, Changchun, China
| | - Jian Sun
- The First Hospital of Jilin University, Changchun, China
| | - Lu Cai
- Kosair Children's Hospital Research Institute, Department of Pediatrics, University of Louisville, Louisville, Kentucky; The Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, China; Departments of Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky; and
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24
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Mao X, Wang T, Liu Y, Irwin MG, Ou JS, Liao XL, Gao X, Xu Y, Ng KFJ, Vanhoutte PM, Xia Z. N-acetylcysteine and allopurinol confer synergy in attenuating myocardial ischemia injury via restoring HIF-1α/HO-1 signaling in diabetic rats. PLoS One 2013; 8:e68949. [PMID: 23874823 PMCID: PMC3715528 DOI: 10.1371/journal.pone.0068949] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 06/04/2013] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVES To determine whether or not the antioxidants N-acetylcysteine (NAC) and allopurinol (ALP) confer synergistic cardioprotection against myocardial ischemia/reperfusion (MI/R) injury by stabilizing hypoxia inducible factor 1α (HIF-1α)/heme oxygenase 1 (HO-1) signaling in diabetic myocardium. METHODS Control or diabetic [streptozotocin (STZ)-induced] Sprague Dawley rats received vehicle or NAC, ALP or their combination for four weeks starting one week after STZ injection. The animals were then subjected to thirty minutes of coronary artery occlusion followed by two hours reperfusion in the absence or presence of the selective HO-1 inhibitor, tin protoporphyrin-IX (SnPP-IX) or the HIF-1α inhibitor 2-Methoxyestradiol (2ME2). Cardiomyocytes exposed to high glucose were subjected to hypoxia/re-oxygenation in the presence or absence of HIF-1α and HO-1 achieved by gene knock-down with related siRNAs. RESULTS Myocardial and plasma levels of 15-F2t-isoprostane, an index of oxidative stress, were significantly increased in diabetic rats while cardiac HO-1 protein and activity were reduced; this was accompanied with reduced cardiac protein levels of HIF-1α, and increased post-ischemic myocardial infarct size and cellular injury. NAC and ALP given alone and in particular their combination normalized cardiac levels of HO-1 and HIF-1α protein expression and prevented the increase in 15-F2t-isoprostane, resulting in significantly attenuated post-ischemic myocardial infarction. NAC and ALP also attenuated high glucose-induced post-hypoxic cardiomyocyte death in vitro. However, all the above protective effects of NAC and ALP were cancelled either by inhibition of HO-1 or HIF-1α with SnPP-IX and 2ME2 in vivo or by HO-1 or HIF-1α gene knock-down in vitro. CONCLUSION NAC and ALP confer synergistic cardioprotection in diabetes via restoration of cardiac HIF-1α and HO-1 signaling.
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Affiliation(s)
- Xiaowen Mao
- Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
| | - Tingting Wang
- Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
| | - Yanan Liu
- Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
| | - Michael G. Irwin
- Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
| | - Jing-song Ou
- Division of Cardiac Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiao-long Liao
- Division of Cardiac Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xia Gao
- Department of Endocrinology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yuan Xu
- Department of Endocrinology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Kwok F. J. Ng
- Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
- Division of Cardiac Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Paul M. Vanhoutte
- Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, China
| | - Zhengyuan Xia
- Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
- Shenzhen Institute of Research and Innovation, The University of Hong Kong, Shenzhen, China
- * E-mail:
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