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Bouisset F, Bataille V, Schiele F, Puymirat E, Fayol A, Simon T, Danchin N, Ferrières J. Type 2 diabetes mellitus in acute myocardial infarction: a persistent significant burden on long-term mortality. Front Cardiovasc Med 2024; 11:1401569. [PMID: 38932992 PMCID: PMC11204119 DOI: 10.3389/fcvm.2024.1401569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/13/2024] [Indexed: 06/28/2024] Open
Abstract
Objective The long-term impact of type 2 diabetes mellitus (T2DM) after an acute myocardial infarction (AMI) has not been thoroughly investigated yet. This study aimed to assess the long-term impact of T2DM after AMI. Research design and methods We analyzed the data of three nationwide observational studies from the French Registry of Acute ST-elevation and non-ST-elevation Myocardial Infarction (FAST-MI) program, conducted over a 1-month period in 2005, 2010, and 2015. Patients presenting T2DM were classified as diabetic, and patients presenting type 1 diabetes mellitus were excluded. We identified factors related to all-cause death at 1-year follow-up and divided 1,897 subjects into two groups, paired based on their estimated 1-year probability of death as determined by a logistic regression model. Results A total of 9,181 AMI patients were included in the analysis, among them 2,038 (22.2%) had T2DM. Patients with diabetes were significantly older (68.2 ± 12.0 vs. 63.8 ± 14.4, p < 0.001) and had a higher prevalence of a prior history of percutaneous coronary intervention (PCI), coronary artery bypass grafting (CABG), or heart failure (22.5% vs. 13.0%, 7.1% vs. 3.1% and 6.7 vs. 3.8% respectively, p < 0.001 for all). Even after matching two groups of 1,897 patients based on propensity score for their 1-year probability of death, diabetes remained associated with long-term mortality, with an HR of 1.30, 95%CI (1.17-1.45), p < 0.001. Conclusions T2DM per se has an adverse impact on long-term survival after myocardial infarction. Independently of the risk of short-term mortality, patients with diabetes who survived an AMI have a 30% higher risk of long-term mortality.
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Affiliation(s)
- Frédéric Bouisset
- Department of Cardiology, Toulouse Rangueil University Hospital, INSERM UMR 1295, Toulouse, France
| | - Vincent Bataille
- Department of Cardiology, Toulouse Rangueil University Hospital, INSERM UMR 1295, Toulouse, France
- Association Pour la Diffusion de la Médecine de Prévention (ADIMEP), Toulouse, France
| | - François Schiele
- Department of Cardiology, University Hospital Jean Minjoz, Besançon, France
| | - Etienne Puymirat
- Department of Cardiology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Européen Georges Pompidou, Université Paris-Descartes, Paris, France
| | - Antoine Fayol
- Department of Cardiology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Européen Georges Pompidou, Université Paris-Descartes, Paris, France
| | - Tabassome Simon
- Department of Clinical Pharmacology and Unité de Recherche Clinique (URCEST), AP-HP, Hôpital Saint Antoine, Université Pierre et Marie Curie (UPMC-Paris 06), Paris, France
| | - Nicolas Danchin
- Department of Cardiology, Hôpital Saint Joseph, Paris, France
| | - Jean Ferrières
- Department of Cardiology, Toulouse Rangueil University Hospital, INSERM UMR 1295, Toulouse, France
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Hou L, Du J, Dong Y, Wang M, Wang L, Zhao J. Liraglutide prevents cellular senescence in human retinal endothelial cells (HRECs) mediated by SIRT1: an implication in diabetes retinopathy. Hum Cell 2024; 37:666-674. [PMID: 38438663 PMCID: PMC11016519 DOI: 10.1007/s13577-024-01038-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 01/24/2024] [Indexed: 03/06/2024]
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder affecting millions of people worldwide, characterized by dysregulated glucose homeostasis and hyperglycemia. Diabetic retinopathy (DR) is one of the serious multisystemic complications. Aging is an important risk factor for DR. Endothelial sirtuin 1 (SIRT1) plays an important role in regulating the pathophysiology of glucose metabolism, cellular senescence, and aging. Liraglutide, an analog of Glucagon-like peptide 1 (GLP-1), has been widely used in the treatment of DM. However, the effects of Liraglutide on DR are less reported. Here, we investigated whether treatment with Liraglutide has beneficial effects on high glucose (HG)-induced injury in human retinal microvascular endothelial cells (HRECs). First, we found that exposure to HG reduced the expression of glucagon-like peptide 1 receptor 1 (GLP-1R). Additionally, Liraglutide ameliorated HG-induced increase in the expression of vascular endothelial growth factor-A (VEGF-A) and interleukin 6 (IL-6). Importantly, Liraglutide ameliorated cellular senescence and increased telomerase activity in HG-challenged HRECs. Liraglutide also reduced the levels of p53 and p21. Mechanistically, Liraglutide restored the expression of SIRT1 against HG. In contrast, the knockdown of SIRT1 abolished the protective effects of Liraglutide in cellular senescence of HRECs. Our findings suggest that Liraglutide might possess a benefit on DR mediated by SIRT1.
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Affiliation(s)
- Lihua Hou
- Department of Ophthalmology, The First People's Hospital of Xianyang, No. 10, Biyuan Road, Qindu District, Xianyang City, 712000, Shanxi, China
| | - Jianying Du
- Department of Ophthalmology, The First People's Hospital of Xianyang, No. 10, Biyuan Road, Qindu District, Xianyang City, 712000, Shanxi, China
| | - Yongxiao Dong
- Department of Ophthalmology, The First People's Hospital of Xianyang, No. 10, Biyuan Road, Qindu District, Xianyang City, 712000, Shanxi, China
| | - Min Wang
- Department of Ophthalmology, The First People's Hospital of Xianyang, No. 10, Biyuan Road, Qindu District, Xianyang City, 712000, Shanxi, China
| | - Libo Wang
- Department of Ophthalmology, Sanyuan Eye Hospital, Xianyang City, 713899, Shanxi, China
| | - Jifei Zhao
- Department of Ophthalmology, The First People's Hospital of Xianyang, No. 10, Biyuan Road, Qindu District, Xianyang City, 712000, Shanxi, China.
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Wu M, Hao Y, Wu X, Zhu M, Chen X, Qi J, Yu Z, Xu H. SirT7-mediated transcription of fascin in hyperglycemic glomerular endothelial cells contributes to EndMT in diabetic nephropathy. Acta Biochim Biophys Sin (Shanghai) 2024; 56:586-596. [PMID: 38449390 DOI: 10.3724/abbs.2024002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024] Open
Abstract
Diabetic nephropathy (DN) is the main cause of end-stage renal disease worldwide. It is reported that the endothelial-to-mesenchymal transition (EndMT) in glomerular endothelial cells plays an important role in DN. As a specific form of epithelial-to-mesenchymal transition, EndMT may involve common regulators of epithelial-to-mesenchymal transition. Fascin has been shown to mediate epithelial-to-mesenchymal transition. In addition, SirT7 has been confir med to contribute to inflammation in hyperglycemic endothelial cells via the modulation of gene transcription. In this study, we speculate that SirT7 modulates fascin transcription and is thus involved in EndMT in hyperglycemic glomerular endothelial cells. Our data indicate that α-smooth muscle actin (α-SMA) and fascin levels are increased, while CD31 levels are decreased in the kidneys of DN rats. Consistently, our cellular experiments reveal that high glucose treatment elevates fascin levels and induces EndMT in human glomerular endothelial cells (HGECs). Moreover, silencing of fascin inhibits EndMT in hyperglycaemic HGECs. In addition, SirT7 is found to be decreased in hyperglycemic cells and in the kidneys of DN mice. Moreover, the inhibition of SirT7 increases fascin level and mediates EndMT. An increase in SirtT7 expression decreases fascin expression, inhibits EndMT, and improves renal function in hyperglycemic cells and DN mice. SirT7 is found to bind to the promoter region of fascin. In summary, the present study indicates that SirT7 transcribes fascin to contribute to hyperglycemia-induced EndMT in DN patients.
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Affiliation(s)
- Mengchen Wu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Yingxiang Hao
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Xinwan Wu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Minmin Zhu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
- Department of Anesthesiology, Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiangyuan Chen
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Jie Qi
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Zhuang Yu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Hongjiao Xu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
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He HM, Zheng SW, Xie YY, Wang Z, Jiao SQ, Yang FR, Li XX, Li J, Sun YH. Simultaneous assessment of stress hyperglycemia ratio and glycemic variability to predict mortality in patients with coronary artery disease: a retrospective cohort study from the MIMIC-IV database. Cardiovasc Diabetol 2024; 23:61. [PMID: 38336720 PMCID: PMC10858529 DOI: 10.1186/s12933-024-02146-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND Stress hyperglycemia and glycemic variability (GV) can reflect dramatic increases and acute fluctuations in blood glucose, which are associated with adverse cardiovascular events. This study aimed to explore whether the combined assessment of the stress hyperglycemia ratio (SHR) and GV provides additional information for prognostic prediction in patients with coronary artery disease (CAD) hospitalized in the intensive care unit (ICU). METHODS Patients diagnosed with CAD from the Medical Information Mart for Intensive Care-IV database (version 2.2) between 2008 and 2019 were retrospectively included in the analysis. The primary endpoint was 1-year mortality, and the secondary endpoint was in-hospital mortality. Levels of SHR and GV were stratified into tertiles, with the highest tertile classified as high and the lower two tertiles classified as low. The associations of SHR, GV, and their combination with mortality were determined by logistic and Cox regression analyses. RESULTS A total of 2789 patients were included, with a mean age of 69.6 years, and 30.1% were female. Overall, 138 (4.9%) patients died in the hospital, and 404 (14.5%) patients died at 1 year. The combination of SHR and GV was superior to SHR (in-hospital mortality: 0.710 vs. 0.689, p = 0.012; 1-year mortality: 0.644 vs. 0.615, p = 0.007) and GV (in-hospital mortality: 0.710 vs. 0.632, p = 0.004; 1-year mortality: 0.644 vs. 0.603, p < 0.001) alone for predicting mortality in the receiver operating characteristic analysis. In addition, nondiabetic patients with high SHR levels and high GV were associated with the greatest risk of both in-hospital mortality (odds ratio [OR] = 10.831, 95% confidence interval [CI] 4.494-26.105) and 1-year mortality (hazard ratio [HR] = 5.830, 95% CI 3.175-10.702). However, in the diabetic population, the highest risk of in-hospital mortality (OR = 4.221, 95% CI 1.542-11.558) and 1-year mortality (HR = 2.013, 95% CI 1.224-3.311) was observed in patients with high SHR levels but low GV. CONCLUSIONS The simultaneous evaluation of SHR and GV provides more information for risk stratification and prognostic prediction than SHR and GV alone, contributing to developing individualized strategies for glucose management in patients with CAD admitted to the ICU.
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Affiliation(s)
- Hao-Ming He
- Department of Cardiology, China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shu-Wen Zheng
- Department of Cardiology, Beijing University of Chinese Medicine School of Traditional Chinese Medicine, Beijing, China
| | - Ying-Ying Xie
- Department of Cardiology, China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhe Wang
- Department of Cardiology, China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Si-Qi Jiao
- Department of Cardiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Fu-Rong Yang
- Department of Cardiology, Beijing University of Chinese Medicine School of Traditional Chinese Medicine, Beijing, China
| | - Xue-Xi Li
- Department of Cardiology, China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jie Li
- Department of Cardiology, China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yi-Hong Sun
- Department of Cardiology, China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Yao WY, Yu YF, Li L, Xu WH. Parental exposure to famine in early life and child overweight in offspring in Chinese populations. Clin Nutr 2023; 42:458-466. [PMID: 36857955 DOI: 10.1016/j.clnu.2023.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023]
Abstract
BACKGROUND Little is known about the transgenerational effect of nutrition deficiency in early life. This study aimed to evaluate the associations of fetal and childhood exposure to famine of parents with their offspring's risk of overweight during childhood. METHODS This analysis included a total of 3734 participants of the China Health and Nutrition Survey aged 1-17 years whose fathers and/or mothers were born in 1955-1966. These children were classified into subgroups according to parental famine exposure status (unexposed and exposed) and timing (fetal-exposed and childhood-exposed). Random effects models were applied to evaluate the associations of parental famine exposure with body mass index (BMI) and overweight of offspring. Fractional polynomial functions were adopted to describe trajectories of BMI against age. RESULTS Compared with children of unexposed parents, there was a lower risk of overweight among offspring of childhood-exposed fathers [OR (95%CI): 0.80 (0.61, 1.04)] or exposed parents [0.84 (0.68, 1.04)], particularly among male offspring, but not among those with exposed mothers only [0.98 (0.65, 1.47)]. For BMI, children with exposed mothers only had a slightly higher BMI [β(95%CI): 0.17 (-0.15, 0.49)], while those with exposed fathers only had no difference [-0.02 (-0.23, 0.19)] or exposed parents had a slightly lower BMI [-0.17 (-0.33, 0.00)] (p < 0.05 for interaction between maternal and paternal exposures). Stratified analysis showed little heterogeneity between male and female offspring, but the association between paternal childhood exposure to famine and lower overweight risk in offspring was more evident in high (vs low) paternal education group (p for interaction< 0.05). CONCLUSIONS The transgenerational associations of early-life exposure to famine with lower risks of child overweight may be via the paternal line and differ by the educational levels of parents. Further studies are warranted to confirm the results and reveal the biological mechanisms underlying.
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Affiliation(s)
- Wei-Yuan Yao
- Department of Epidemiology, School of Public Health, Fudan University, Key Laboratory of Public Health Safety, Ministry of Education (Fudan University), 138 Yi Xue Yuan Road, Shanghai, 200032, China; Yiwu Research Institute of Fudan University, Building V of Zhongfu Square, Yiwu, Zhejiang Province, 322000, China
| | - Yong-Fu Yu
- Department of Biostatistics, School of Public Health and the Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, 138 Yi Xue Yuan Road, Shanghai, 200032, China
| | - Leah Li
- Population, Policy and Practice Research and Teaching Department, University College London Great Ormond Street Institute of Child Health, London, United Kingdom.
| | - Wang-Hong Xu
- Department of Epidemiology, School of Public Health, Fudan University, Key Laboratory of Public Health Safety, Ministry of Education (Fudan University), 138 Yi Xue Yuan Road, Shanghai, 200032, China; Yiwu Research Institute of Fudan University, Building V of Zhongfu Square, Yiwu, Zhejiang Province, 322000, China.
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Eat like a Pig to Combat Obesity. Metabolites 2023; 13:metabo13030420. [PMID: 36984860 PMCID: PMC10051527 DOI: 10.3390/metabo13030420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Obesity and related metabolic health issues are a growing human threat, with many theories regarding its causes. In swine, physiologically alike to humans, considerable knowledge on obesity mechanisms has been accumulated. Calorie counting is the basis for managing swine diets and applied with great accuracy. Epigenetic programing predisposes pigs to insulin insensitivity, but pigs seem to sense this insensitivity and consequently eat less, preventing obesity. Pigs naturally prefer to eat small breakfasts and large dinners. Deviating from this eating pattern or providing diets with a high glycemic burden can trigger obesity; however, pigs will restrict food intake to prevent serious obesity. Interestingly, in practice, problems with obesity are rarely seen, even when pigs are fed poorly timed diets similar to junk food, likely because swine diets are balanced for every nutrient. Indeed, feeding pigs diets deficient in micronutrients does trigger obesity. For humans, several micronutrient requirements have not been set officially, and diets optimized for all micronutrients are rarely provided. In conclusion, various obesity triggers are being debated for humans, which have been proven in swine. Obesity problems in pigs are nevertheless less excessive, likely because pigs recognize unhealthy eating practices and consequently reduce food intake to avoid serious complications. Finally, swine diets are normally balanced for all nutrients, which may be an important practice to prevent obesity, from which human health could greatly benefit.
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Noro F, Santonastaso F, Marotta A, Bonaccio M, Orlandi S, Tirozzi A, Costanzo S, De Curtis A, Gianfagna F, Di Castelnuovo A, Brighenti F, Cerletti C, Donati MB, de Gaetano G, Iacoviello L, Gialluisi A, Izzi B, de Gaetano G, Donati MB, Bonaccio M, Bonanni A, Cerletti C, Costanzo S, De Curtis A, Di Castelnuovo A, Gialluisi A, Gianfagna F, Persichillo M, Di Prospero T, Vermylen J, Pegoraro R, Spagnolo A, Assanelli D, Rago L, Costanzo S, Olivieri M, Panzera T, Di Castelnuovo A, Bonaccio M, Costanzo S, Esposito S, Gialluisi A, Gianfagna F, Orlandi S, Ruggiero E, Tirozzi A, De Curtis A, Magnacca S, Noro F, Tirozzi A, Persichillo M, Bracone F, Panzera T, Bonanni A. Association of nutritional glycaemic indices with global DNA methylation patterns: results from the Moli-sani cohort. Clin Epigenetics 2022; 14:189. [PMID: 36578055 PMCID: PMC9798643 DOI: 10.1186/s13148-022-01407-3] [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: 07/04/2022] [Accepted: 12/13/2022] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND High dietary glycaemic index (GI) and load (GL) have been associated with increased risk of various cardiometabolic conditions. Among the molecular potential mechanisms underlying this relationship, DNA methylation has been studied, but a direct link between high GI and/or GL of diet and global DNA methylation levels has not been proved yet. We analyzed the associations between GI and GL and global DNA methylation patterns within an Italian population. RESULTS Genomic DNA methylation (5mC) and hydroxymethylation (5hmC) levels were measured in 1080 buffy coat samples from participants of the Moli-sani study (mean(SD) = 54.9(11.5) years; 52% women) via ELISA. A 188-item Food Frequency Questionnaire was used to assess food intake and dietary GI and GL for each participant were calculated. Multiple linear regressions were used to investigate the associations between dietary GI and GL and global 5mC and 5hmC levels, as well as the proportion of effect explained by metabolic and inflammatory markers. We found negative associations of GI with both 5mC (β (SE) = - 0.073 (0.027), p = 0.007) and 5hmC (- 0.084 (0.030), p = 0.006), and of GL with 5mC (- 0.14 (0.060), p = 0.014). Circulating biomarkers did not explain the above-mentioned associations. Gender interaction analyses revealed a significant association of the gender-x-GL interaction with 5mC levels, with men showing an inverse association three times as negative as in women (interaction β (SE) = - 0.16 (0.06), p = 0.005). CONCLUSIONS Our findings suggest that global DNA methylation and hydroxymethylation patterns represent a biomarker of carbohydrate intake. Based on the differential association of GL with 5mC between men and women, further gender-based separate approaches are warranted.
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Affiliation(s)
- Fabrizia Noro
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Federica Santonastaso
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy ,grid.510779.d0000 0004 9414 6915Present Address: Human Technopole, Viale Rita Levi Montalcini 1, 20157 Milan, Italy ,grid.4708.b0000 0004 1757 2822Present Address: European School of Molecular Medicine, University of Milan, 20122 Milan, Italy
| | - Annalisa Marotta
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy ,grid.412451.70000 0001 2181 4941Present Address: Center of Predictive Molecular Medicine, Center for Excellence on Ageing and Translational Medicine (CAST), University of Chieti-Pescara, Chieti, Italy
| | - Marialaura Bonaccio
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Sabatino Orlandi
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Alfonsina Tirozzi
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Simona Costanzo
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Amalia De Curtis
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Francesco Gianfagna
- grid.18147.3b0000000121724807EPIMED Research Center, Department of Medicine and Surgery, University of Insubria, Varese, Italy ,grid.477084.80000 0004 1787 3414Mediterranea Cardiocentro, Naples, Italy
| | | | - Furio Brighenti
- grid.10383.390000 0004 1758 0937Department of Food and Drug, University of Parma, Parma, Italy
| | - Chiara Cerletti
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Maria Benedetta Donati
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Giovanni de Gaetano
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
| | - Licia Iacoviello
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy ,grid.18147.3b0000000121724807EPIMED Research Center, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Alessandro Gialluisi
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy ,grid.18147.3b0000000121724807EPIMED Research Center, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Benedetta Izzi
- grid.419543.e0000 0004 1760 3561Department of Epidemiology and Prevention, IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, IS Italy
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Zhan J, Jin K, Ding N, Zhou Y, Hu G, Yuan S, Xie R, Wen Z, Chen C, Li H, Wang DW. Positive feedback loop of miR-320 and CD36 regulates the hyperglycemic memory-induced diabetic diastolic cardiac dysfunction. MOLECULAR THERAPY. NUCLEIC ACIDS 2022; 31:122-138. [PMID: 36618264 PMCID: PMC9813582 DOI: 10.1016/j.omtn.2022.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
Intensive glycemic control is insufficient for reducing the risk of heart failure among patients with diabetes mellitus (DM). While the "hyperglycemic memory" phenomenon is well documented, little is known about its underlying mechanisms. In this study, a type 1 DM model was established in C57BL/6 mice using streptozotocin (STZ). Leptin receptor-deficient (db/db) mice were used as a model of type 2 DM. A type 9 adeno-associated virus was used to overexpress or knock down miR-320 in vivo. Diastolic dysfunction was observed in the type 1 DM mice with elevated miR-320 expression. However, glycemic control using insulin failed to reverse diastolic dysfunction. miR-320 knockdown protected against STZ-induced diastolic dysfunction. Similar results were observed in the type 2 DM mice. In vitro, we found that miR-320 promoted CD36 expression, which in turn induced further miR-320 expression. CD36 was rapidly induced by hyperglycemia at protein level compared with the much slower induction of miR-320, suggesting a positive feedback loop of CD36/miR-320 with CD36 protein induction as the initial triggering event. In conclusion, in DM-induced cardiac injury, miR-320 and CD36 mutually enhance each other's expression, leading to a positive feedback loop and a sustained hyperlipidemic state in the heart.
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Affiliation(s)
- Jiabing Zhan
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Kunying Jin
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Nan Ding
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Yufei Zhou
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Guo Hu
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Shuai Yuan
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Rong Xie
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Zheng Wen
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Chen Chen
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China,Corresponding author: Chen Chen, Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, 1095# Jiefang Ave., Wuhan 430030, China.
| | - Huaping Li
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China,Corresponding author: Huaping Li, Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095# Jiefang Ave., Wuhan 430030, China.
| | - Dao Wen Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China,Corresponding author: Dao Wen Wang, Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095# Jiefang Ave., Wuhan 430030, China.
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9
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Li X, Liu J, Lu L, Huang T, Hou W, Wang F, Yu L, Wu F, Qi J, Chen X, Meng Z, Zhu M. Sirt7 associates with ELK1 to participate in hyperglycemia memory and diabetic nephropathy via modulation of DAPK3 expression and endothelial inflammation. Transl Res 2022; 247:99-116. [PMID: 35470010 DOI: 10.1016/j.trsl.2022.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 04/01/2022] [Accepted: 04/18/2022] [Indexed: 02/08/2023]
Abstract
Diabetic nephropathy (DN) is one of the most serious complications of advanced diabetes, and increases patient mortality. Recently, epigenetics-mediated hyperglycemic memory in pathological process of DN has received attention. The purpose of this study was to determine the underlying mechanism by which sirt7 modulates hyperglycemic memory in DN. In glomerular endothelial cells (GECs) cultured in high glucose and glomeruli of DN patients and rats, an increase in p65 phosphorylation and endothelial adhesion molecule levels persisted after glucose normalization but was reversed by glucose normalization associated with death-associated protein kinase-3 (DAPK3) knockout or DAPK3 inhibitor. High glucose-mediated decrease in sirt7, the deacetylase modulating H3K18-acetylation (H3K18ac), was sustained after normoglycemia. Sirt7 overexpression accompanied by glucose normalization suppressed DAPK3 expression and inflammation in GECs. Moreover, sh-sirt7-induced inflammation was inhibited by si-DAPK3. Furthermore, sirt7 and H3K18ac were located at the DAPK3 promoter region. ELK1 was found to combine with sirt7. si-ELK1 supplemented with normoglycemia inhibited high glucose-induced DAPK3 expression and inflammation in GECs. ELK1 overexpression-mediated inflammation was inhibited by si-DAPK3. In addition, ELK1 and sirt7 were located at the same promoter region of DAPK3. ELK1 overexpression enhanced DAPK3 promoter activity, which disappeared after specific binding site mutation. In vivo, sirt7 overexpression decreased inflammation and improved renal function during insulin treatment of DN rats, whereas insulin alone did not work. Our data demonstrated high glucose-mediated mutual inhibition between sirt7 and ELK1 induced DAPK3 transcription and inflammation despite normoglycemia in GECs, thus forming a vicious cycle and participating in the occurrence of hyperglycemic memory in DN.
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Affiliation(s)
- Xue Li
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jing Liu
- Department of Anaesthesiology, Huzhou Maternal & Child Health Care Hospital, Huzhou, Zhejiang, China
| | - Lihong Lu
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ting Huang
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wenting Hou
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Fei Wang
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lang Yu
- Department of Anaesthesiology, Huzhou Central Hospital, Affiliated Central Hospital of HuZhou University, No.1558 Sanhuan North Road, Huzhou, Zhejiang, China
| | - Fengfeng Wu
- Department of Orthopedics and Rehabilitation, Huzhou Central Hospital, Affiliated Central Hospital of HuZhou University, No.1558 Sanhuan North Road, Huzhou, Zhejiang, China
| | - Jie Qi
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiangyuan Chen
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Zhipeng Meng
- Department of Anaesthesiology, Huzhou Central Hospital, Affiliated Central Hospital of HuZhou University, No.1558 Sanhuan North Road, Huzhou, Zhejiang, China.
| | - Minmin Zhu
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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10
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Alimohammadi M, Makaremi S, Rahimi A, Asghariazar V, Taghadosi M, Safarzadeh E. DNA methylation changes and inflammaging in aging-associated diseases. Epigenomics 2022; 14:965-986. [PMID: 36043685 DOI: 10.2217/epi-2022-0143] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aging as an inevitable phenomenon is associated with pervasive changes in physiological functions. There is a relationship between aging and the increase of several chronic diseases. Most age-related disorders are accompanied by an underlying chronic inflammatory state, as demonstrated by local infiltration of inflammatory cells and greater levels of proinflammatory cytokines in the bloodstream. Within inflammaging, many epigenetic events, especially DNA methylation, change. During the aging process, due to aberrations of DNA methylation, biological processes are disrupted, leading to the emergence or progression of a variety of human diseases, including cancer, neurodegenerative disorders, cardiovascular disease and diabetes. The focus of this review is on DNA methylation, which is involved in inflammaging-related activities, and how its dysregulation leads to human disorders.
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Affiliation(s)
- Mina Alimohammadi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 1983969411, Iran
| | - Shima Makaremi
- School of Medicine & Allied Medical Sciences, Ardabil University of Medical Sciences, Ardabil, 5618985991, Iran
| | - Ali Rahimi
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, 5618985991, Iran
| | - Vahid Asghariazar
- Deputy of Research & Technology, Ardabil University of Medical Sciences, Ardabil, 5618985991, Iran
| | - Mahdi Taghadosi
- Department of Immunology, Kermanshah University of Medical Sciences, Kermanshah, 6714869914, Iran
| | - Elham Safarzadeh
- Department of Microbiology, Parasitology, & Immunology, Ardabil University of Medical Sciences, Ardabil, 5618985991, Iran
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11
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Studying Epigenetics of Cardiovascular Diseases on Chip Guide. CARDIOGENETICS 2022. [DOI: 10.3390/cardiogenetics12030021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Epigenetics is defined as the study of inheritable changes in the gene expressions and phenotypes that occurs without altering the normal DNA sequence. These changes are mainly due to an alteration in chromatin or its packaging, which changes the DNA accessibility. DNA methylation, histone modification, and noncoding or microRNAs can best explain the mechanism of epigenetics. There are various DNA methylated enzymes, histone-modifying enzymes, and microRNAs involved in the cause of various CVDs (cardiovascular diseases) such as cardiac hypertrophy, heart failure, and hypertension. Moreover, various CVD risk factors such as diabetes mellitus, hypoxia, aging, dyslipidemia, and their epigenetics are also discussed together with CVDs such as CHD (coronary heart disease) and PAH (pulmonary arterial hypertension). Furthermore, different techniques involved in epigenetic chromatin mapping are explained. Among these techniques, the ChIP-on-chip guide is explained with regard to its role in cardiac hypertrophy, a final form of heart failure. This review focuses on different epigenetic factors that are involved in causing cardiovascular diseases.
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12
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Polymer-Based Delivery of Peptide Drugs to Treat Diabetes: Normalizing Hyperglycemia and Preventing Diabetic Complications. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00057-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Zhang B, Zhang J, Liu G, Guo X, Liu X, Chen J. KDM3A Inhibition Ameliorates Hyperglycemia-Mediated Myocardial Injury by Epigenetic Modulation of Nuclear Factor Kappa-B/P65. Front Cardiovasc Med 2022; 9:870999. [PMID: 35571189 PMCID: PMC9106140 DOI: 10.3389/fcvm.2022.870999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/05/2022] [Indexed: 12/21/2022] Open
Abstract
Objectives Even after the glucose level returns to normal, hyperglycemia-induced cardiac dysfunction as well as reactive oxygen species (ROS) generation, inflammatory responses, and apoptosis continued deterioration, showing a long-lasting adverse effect on cardiac function and structure. We aimed to unveil the molecular and cellular mechanisms underlying hyperglycemia-induced persistent myocardial injury and cardiac dysfunction. Methods and Results Recently, the accumulated evidence indicated epigenetic regulation act as a determining factor in hyperglycemia-induced continuous cardiovascular dysfunction. As an important histone demethylase, the expression of lysine-specific demethylase 3A (KDM3A) was continually increased, accompanied by a sustained decline of H3K9me2 levels in diabetic myocardium even if received hypoglycemic therapy. Besides, by utilizing gain- and loss-of-functional approaches, we identified KDM3A as a novel regulator that accelerates hyperglycemia-mediated myocardial injury by promoting ROS generation, aggregating inflammatory reaction, and facilitating cell apoptosis in vitro and in vivo. The KDM3A inhibition could significantly ameliorate the adverse effect of hyperglycemia in both diabetes model and diabetic intensive glycemic control model. Mechanically, our data uncovered that KDM3A could promote the expression and transcriptional activity of nuclear factor kappa-B (NF-κB/P65), and the succedent rescue experiments further verified that KDM3A regulates hyperglycemia-induced myocardial injury in an NF-κB/P65 dependent manner. Conclusion This study revealed histone-modifying enzymes KDM3A drives persistent oxidative stress, inflammation, apoptosis, and subsequent myocardial injury in the diabetic heart by regulating the transcription of NF-κB/P65.
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Affiliation(s)
- Bofang Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei Key Laboratory of Cardiology, Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - Jing Zhang
- Department of Cardiology, The First College of Clinical Medical Science, Yichang Central People’s Hospital, China Three Gorges University, Yichang, China
| | - Gen Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei Key Laboratory of Cardiology, Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - Xin Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei Key Laboratory of Cardiology, Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - Xiaopei Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei Key Laboratory of Cardiology, Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - Jing Chen
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei Key Laboratory of Cardiology, Cardiovascular Research Institute, Wuhan University, Wuhan, China
- *Correspondence: Jing Chen, , orcid.org/0000-0002-4037-7158
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14
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Olaniyi KS, Atuma CL, Mahmud H, Saidi AO, Sabinari IW, Akintayo CO, Ajadi IO, Olatunji LA. Restoration of cardiac metabolic flexibility by acetate in high fat diet-induced obesity is independent of ANP/BNP modulation. Can J Physiol Pharmacol 2022; 100:509-520. [PMID: 35395159 DOI: 10.1139/cjpp-2021-0531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The present study hypothesized that cardiac metabolic inflexibility is dependent on cardiac ANP/BNP alteration and HDAC activity. We further sought to investigate the therapeutic potential of SCFA, acetate in high fat diet (HFD)-induced obese rat model. Adult male Wistar rats were assigned into groups (n = 6/group): Control, Obese, Sodium acetate (NaAc)-treated and Obese+ NaAc-treated groups received distilled water once daily (oral gavage), 40% HFD ad libitum, 200 mg/kg NaAc once daily (oral gavage) and 40% HFD+NaAc respectively. The treatments lasted for 12 weeks. HFD resulted in increased food intake, body weight and cardiac mass. It also caused insulin resistance and enhanced β-cell function, increased fasting insulin, lactate, plasma and cardiac triglyceride, total cholesterol, lipid peroxidation, TNF-α, IL-6, HDAC and cardiac troponin T and γ-Glutamyl transferase and decreased plasma and cardiac GSH with unaltered cardiac ANP and BNP. However, these alterations were averted when treated with acetate. Taken together, these results indicate that obesity induces defective cardiac metabolic flexibility, which is accompanied by elevated level of HDAC and not ANP/BNP alteration. The results also suggest that acetate ameliorates obesity-induced cardiac metabolic inflexibility by suppression of HDAC and independent of ANP/BNP modulation.
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Affiliation(s)
- Kehinde Samuel Olaniyi
- Afe Babalola University, 470822, Department of Physiology, Ado Ekiti, Nigeria.,College of Health Sciences University of Ilorin P, Department of Physiology, Ilorin, Nigeria;
| | - Chukwubueze L Atuma
- Afe Babalola University, 470822, Department of Physiology, Ado Ekiti, Nigeria;
| | - Hadiza Mahmud
- Afe Babalola University, 470822, Department of Physiology, Ado Ekiti, Nigeria;
| | - Azeezat O Saidi
- Afe Babalola University, 470822, Department of Physiology, Ado Ekiti, Nigeria;
| | | | - Christopher O Akintayo
- Afe Babalola University College of Medicine and Health Sciences, 473846, Cardio/Repro-metabolic and Microbiome Research Unit, Department of Physiology, Ado Ekiti, Ekiti, Nigeria;
| | - Isaac O Ajadi
- Ladoke Akintola University of Technology College of Health Sciences, 215747, Department of Physiology, Osogbo, Osun, Nigeria;
| | - Lawrence A Olatunji
- College of Health Sciences University of Ilorin P, Department of Physiology, Ilorin, Nigeria;
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15
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Hyperglycemia Promotes Endothelial Cell Senescence through AQR/PLAU Signaling Axis. Int J Mol Sci 2022; 23:ijms23052879. [PMID: 35270021 PMCID: PMC8911151 DOI: 10.3390/ijms23052879] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/23/2022] [Accepted: 03/02/2022] [Indexed: 02/06/2023] Open
Abstract
Hyperglycemia is reported to accelerate endothelial cell senescence that contributes to diabetic complications. The underlying mechanism, however, remains elusive. We previously demonstrated AQR as a susceptibility gene for type 2 diabetes mellitus (T2DM) and showed that it was increased in multiple tissues in models with T2DM or metabolic syndrome. This study aimed to investigate the role of AQR in hyperglycemia-induced senescence and its underlying mechanism. Here, we retrieved several datasets of the aging models and found the expression of AQR was increased by high glucose and by aging across species, including C. elegans (whole-body), rat (cardiac tissues), and monkey (blood). we validated the increased AQR expression in senescent human umbilical vein endothelial cells (HUVECs). When overexpressed, AQR promoted the endothelial cell senescence, confirmed by an increased number of cells stained with senescence-associated beta-galactosidase and upregulation of CDKN1A (P21) as well as the prohibited cellular colony formation and G2/M phase arrest. To explore the mechanism by which AQR regulated the cellular senescence, transcriptomic analyses of HUVECs with the overexpression and knockdown of the AQR were performed. We identified 52 co-expressed genes that were enriched, in the terms of plasminogen activation, innate immunity, immunity, and antiviral defense. Among co-expressed genes, PLAU was selected to evaluate its contribution to senescence for its highest strength in the enrichment of the biological process. We demonstrated that the knockdown of PLAU rescued senescence-related phenotypes, endothelial cell activation, and inflammation in models induced by AQR or TNF-α. These findings, for the first time, indicate that AQR/PLAU is a critical signaling axis in the modulation of endothelial cell senescence, revealing a novel link between hyperglycemia and vascular dysfunction. The study may have implications in the prevention of premature vascular aging associated with T2DM.
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16
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Kowluru RA. Long Noncoding RNAs and Mitochondrial Homeostasis in the Development of Diabetic Retinopathy. Front Endocrinol (Lausanne) 2022; 13:915031. [PMID: 35733767 PMCID: PMC9207305 DOI: 10.3389/fendo.2022.915031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
Retinopathy is one of the most devastating complications of diabetes, which a patient fears the most. Hyperglycemic environment results in many structural, functional, molecular and biochemical abnormalities in the retina, and overproduction of mitochondrial superoxide, induced by hyperglycemic milieu, is considered to play a central role in the development of diabetic retinopathy. Expression of many genes associated with maintaining mitochondrial homeostasis is also altered. Recent research has shown that several long noncoding RNAs, RNAs with more than 200 nucleotides but without any reading frames, are aberrantly expressed in diabetes, and altered expression of these long noncoding RNAs is now being implicated in the development of diabetes and its complications including retinopathy. This review focuses the role of long noncoding RNAs in the development of diabetic retinopathy, with a special emphasis on the maintenance of mitochondrial homeostasis.
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17
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Zhan J, Chen C, Wang DW, Li H. Hyperglycemic memory in diabetic cardiomyopathy. Front Med 2021; 16:25-38. [PMID: 34921674 DOI: 10.1007/s11684-021-0881-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 06/25/2021] [Indexed: 12/26/2022]
Abstract
Cardiovascular diseases account for approximately 80% of deaths among individuals with diabetes mellitus, with diabetic cardiomyopathy as the major diabetic cardiovascular complication. Hyperglycemia is a symptom that abnormally activates multiple downstream pathways and contributes to cardiac hypertrophy, fibrosis, apoptosis, and other pathophysiological changes. Although glycemic control has long been at the center of diabetes therapy, multicenter randomized clinical studies have revealed that intensive glycemic control fails to reduce heart failure-associated hospitalization and mortality in patients with diabetes. This finding indicates that hyperglycemic stress persists in the cardiovascular system of patients with diabetes even if blood glucose level is tightly controlled to the normal level. This process is now referred to as hyperglycemic memory (HGM) phenomenon. We briefly reviewed herein the current advances that have been achieved in research on the underlying mechanisms of HGM in diabetic cardiomyopathy.
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Affiliation(s)
- Jiabing Zhan
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Chen Chen
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China.
| | - Huaping Li
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China.
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18
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El Hayek MS, Ernande L, Benitah JP, Gomez AM, Pereira L. The role of hyperglycaemia in the development of diabetic cardiomyopathy. Arch Cardiovasc Dis 2021; 114:748-760. [PMID: 34627704 DOI: 10.1016/j.acvd.2021.08.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/02/2021] [Accepted: 08/04/2021] [Indexed: 01/08/2023]
Abstract
Diabetes mellitus is a metabolic disorder with a chronic hyperglycaemic state. Cardiovascular diseases are the primary cause of mortality in patients with diabetes. Increasing evidence supports the existence of diabetic cardiomyopathy, a cardiac dysfunction with impaired cardiac contraction and relaxation, independent of coronary and/or valvular complications. Diabetic cardiomyopathy can lead to heart failure. Several preclinical and clinical studies have aimed to decipher the underlying mechanisms of diabetic cardiomyopathy. Among all the co-factors, hyperglycaemia seems to play an important role in this pathology. Hyperglycaemia has been shown to alter cardiac metabolism and function through several deleterious mechanisms, such as oxidative stress, inflammation, accumulation of advanced glycated end-products and upregulation of the hexosamine biosynthesis pathway. These mechanisms are responsible for the activation of hypertrophic pathways, epigenetic modifications, mitochondrial dysfunction, cell apoptosis, fibrosis and calcium mishandling, leading to cardiac stiffness, as well as contractile and relaxation dysfunction. This review aims to describe the hyperglycaemic-induced alterations that participate in diabetic cardiomyopathy, and their correlation with the severity of the disease and patient mortality, and to provide an overview of cardiac outcomes of glucose-lowering therapy.
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Affiliation(s)
| | - Laura Ernande
- INSERM U955, Université Paris-Est Créteil (UPEC), 94010 Créteil, France; Department of Cardiology, Institut Mondor de Recherche Biomédicale, INSERM U955-Équipe 8, Faculté de Médecine de Créteil, 94010 Créteil, France
| | | | - Ana-Maria Gomez
- Université Paris-Saclay, INSERM, UMR-S 1180, 92296 Châtenay-Malabry, France
| | - Laetitia Pereira
- Université Paris-Saclay, INSERM, UMR-S 1180, 92296 Châtenay-Malabry, France.
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19
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Sultan S, Ahmed F, Bajouh O, Schulten HJ, Bagatian N, Al-Dayini R, Subhi O, Karim S, Almalki S. Alterations of transcriptome expression, cell cycle, and mitochondrial superoxide reveal foetal endothelial dysfunction in Saudi women with gestational diabetes mellitus. Endocr J 2021; 68:1067-1079. [PMID: 33867398 DOI: 10.1507/endocrj.ej21-0189] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Gestational diabetes mellitus (GDM) affects one in four Saudi women and is associated with high risks of cardiovascular diseases in both the mother and foetus. It is believed that endothelial cells (ECs) dysfunction initiates these diabetic complications. In this study, differences in the transcriptome profiles, cell cycle distribution, and mitochondrial superoxide (MTS) between human umbilical vein endothelial cells (HUVECs) from GDM patients and those from healthy (control) subjects were analysed. Transcriptome profiles were generated using high-density expression microarray. The selected four altered genes were validated using qRT-PCR. MTS and cell cycle were analysed by flow cytometry. A total of 84 altered genes were identified, comprising 52 upregulated and 32 downregulated genes in GDM.HUVECs. Our selection of the four interested altered genes (TGFB2, KITLG, NEK7, and IGFBP5) was based on the functional network analysis, which revealed that these altered genes are belonging to the highest enrichment score associated with cellular function and proliferation; all of which may contribute to ECs dysfunction. The cell cycle revealed an increased percentage of cells in the G2/M phase in GDM.HUVECs, indicating cell cycle arrest. In addition, we found that GDM.HUVECs had increased MTS generation. In conclusion, GDM induces persistent impairment of the biological functions of foetal ECs, as evidenced by analyses of transcriptome profiles, cell cycle, and MTS even after ECs culture in vitro for several passages under normal glucose conditions.
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Affiliation(s)
- Samar Sultan
- Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Farid Ahmed
- Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Osama Bajouh
- Department of Obstetrics and Gynaecology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Centre of Innovation in Personalized Medicine, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hans-Juergen Schulten
- Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nadia Bagatian
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Roaa Al-Dayini
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ohoud Subhi
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sajjad Karim
- Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sultanah Almalki
- Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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20
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Li Y, Baccouche B, Olayinka O, Serikbaeva A, Kazlauskas A. The Role of the Wnt Pathway in VEGF/Anti-VEGF-Dependent Control of the Endothelial Cell Barrier. Invest Ophthalmol Vis Sci 2021; 62:17. [PMID: 34542556 PMCID: PMC8458780 DOI: 10.1167/iovs.62.12.17] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Purpose Investigate the contribution of the Wnt pathway to vascular endothelial growth factor (VEGF)/anti-VEGF-mediated control of endothelial cell permeability. Methods High glucose-treated primary human retinal endothelial cells (HRECs) were exposed to either VEGF, or VEGF and then anti-VEGF. Changes in gene expression were assayed by RNAseq and qRT-PCR. Permeability was monitored by electrical cell-substrate impedance sensing (ECIS). Approaches to activate the Wnt pathway included treatment with LiCl and overexpression of constitutively activated β-catenin. β-catenin-dependent transcriptional activity was monitored in HRECs stably expressing a TCF/LEF-driven reporter. Results VEGF/anti-VEGF altered expression of genes encoding many members of the Wnt pathway. A subset of these genes was regulated in a way that is likely to contribute to control of the endothelial cell barrier. Namely, the VEGF-induced alteration of expression of such genes was reversed by anti-VEGF, and such adjustments occurred at times corresponding to changes in barrier function. While pharmacological and molecular approaches to activate the Wnt pathway had no effect on basal permeability, they suppressed VEGF-induced relaxation. Furthermore, anti-VEGF-mediated restoration of barrier function was unaffected by activation of the Wnt pathway. Conclusions VEGF/anti-VEGF engages multiple members of the Wnt pathway, and activating this pathway enforces the endothelial barrier by attenuating VEGF-induced relaxation. These data suggest that FDA-approved agents such as LiCl may be an adjuvant to anti-VEGF therapy for patients afflicted with blinding conditions including diabetic retinopathy.
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Affiliation(s)
- Yueru Li
- University of Illinois at Chicago, Department of Ophthalmology & Visual Sciences, Chicago, IL, United States
| | - Basma Baccouche
- University of Illinois at Chicago, Department of Ophthalmology & Visual Sciences, Chicago, IL, United States
| | - Olamide Olayinka
- Department of Physiology and Biophysics, Chicago, IL, United States
| | - Anara Serikbaeva
- Department of Physiology and Biophysics, Chicago, IL, United States
| | - Andrius Kazlauskas
- University of Illinois at Chicago, Department of Ophthalmology & Visual Sciences, Chicago, IL, United States.,Department of Physiology and Biophysics, Chicago, IL, United States
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21
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Klimontov VV, Saik OV, Korbut AI. Glucose Variability: How Does It Work? Int J Mol Sci 2021; 22:ijms22157783. [PMID: 34360550 PMCID: PMC8346105 DOI: 10.3390/ijms22157783] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 02/07/2023] Open
Abstract
A growing body of evidence points to the role of glucose variability (GV) in the development of the microvascular and macrovascular complications of diabetes. In this review, we summarize data on GV-induced biochemical, cellular and molecular events involved in the pathogenesis of diabetic complications. Current data indicate that the deteriorating effect of GV on target organs can be realized through oxidative stress, glycation, chronic low-grade inflammation, endothelial dysfunction, platelet activation, impaired angiogenesis and renal fibrosis. The effects of GV on oxidative stress, inflammation, endothelial dysfunction and hypercoagulability could be aggravated by hypoglycemia, associated with high GV. Oscillating hyperglycemia contributes to beta cell dysfunction, which leads to a further increase in GV and completes the vicious circle. In cells, the GV-induced cytotoxic effect includes mitochondrial dysfunction, endoplasmic reticulum stress and disturbances in autophagic flux, which are accompanied by reduced viability, activation of apoptosis and abnormalities in cell proliferation. These effects are realized through the up- and down-regulation of a large number of genes and the activity of signaling pathways such as PI3K/Akt, NF-κB, MAPK (ERK), JNK and TGF-β/Smad. Epigenetic modifications mediate the postponed effects of glucose fluctuations. The multiple deteriorative effects of GV provide further support for considering it as a therapeutic target in diabetes.
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Affiliation(s)
- Vadim V. Klimontov
- Laboratory of Endocrinology, Research Institute of Clinical and Experimental Lymphology—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (RICEL—Branch of IC&G SB RAS), 630060 Novosibirsk, Russia; (O.V.S.); (A.I.K.)
- Correspondence:
| | - Olga V. Saik
- Laboratory of Endocrinology, Research Institute of Clinical and Experimental Lymphology—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (RICEL—Branch of IC&G SB RAS), 630060 Novosibirsk, Russia; (O.V.S.); (A.I.K.)
- Laboratory of Computer Proteomics, Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences (IC&G SB RAS), 630090 Novosibirsk, Russia
| | - Anton I. Korbut
- Laboratory of Endocrinology, Research Institute of Clinical and Experimental Lymphology—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (RICEL—Branch of IC&G SB RAS), 630060 Novosibirsk, Russia; (O.V.S.); (A.I.K.)
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22
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Kowluru RA, Radhakrishnan R, Mohammad G. Regulation of Rac1 transcription by histone and DNA methylation in diabetic retinopathy. Sci Rep 2021; 11:14097. [PMID: 34238980 PMCID: PMC8266843 DOI: 10.1038/s41598-021-93420-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/17/2021] [Indexed: 12/16/2022] Open
Abstract
Cytosolic ROS, generated by NADPH oxidase 2 (Nox2) in diabetes, damage retinal mitochondria, which leads to the development of retinopathy. A small molecular weight G-protein essential for Nox2 activation, Rac1, is also transcriptionally activated via active DNA methylation-hydroxymethylation. DNA methylation is a dynamic process, and can also be regulated by histone modifications; diabetes alters retinal histone methylation machinery. Our aim is to investigate the role of histone methylation (H3K9me3) of Rac1 promoter in dynamic DNA methylation- transcriptional activation. Using human retinal endothelial cells in 20 mM D-glucose, H3K9me3 at Rac1 promoter was quantified by chromatin-Immunoprecipitation technique. Crosstalk between H3K9me3 and DNA methylation was examined in cells transfected with siRNA of histone trimethyl-transferase, Suv39H1, or Dnmt1, exposed to high glucose. Key parameters were confirmed in retinal microvessels from streptozotocin-induced diabetic mice, with intravitreally administered Suv39H1-siRNA or Dnmt1-siRNA. Compared to cells in normal glucose, high glucose increased H3K9me3 and Suv39H1 binding at Rac1 promoter, and Suv39H1-siRNA prevented glucose-induced increase 5 hydroxy methyl cytosine (5hmC) and Rac1 mRNA. Similarly, in diabetic mice, Suv39H1-siRNA attenuated increase in 5hmC and Rac1 mRNA. Thus, H3K9me3 at Rac1 promoter assists in active DNA methylation-hydroxymethylation, activating Rac1 transcription. Regulation of Suv39H1-H3K9 trimethylation could prevent further epigenetic modifications, and prevent diabetic retinopathy.
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Affiliation(s)
- Renu A Kowluru
- Ophthalmology, Visual and Anatomical Sciences, Kresge Eye Institute, Wayne State University, Detroit, MI, 48201, USA.
| | - Rakesh Radhakrishnan
- Ophthalmology, Visual and Anatomical Sciences, Kresge Eye Institute, Wayne State University, Detroit, MI, 48201, USA
| | - Ghulam Mohammad
- Ophthalmology, Visual and Anatomical Sciences, Kresge Eye Institute, Wayne State University, Detroit, MI, 48201, USA
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23
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Kowluru RA. Diabetic Retinopathy and NADPH Oxidase-2: A Sweet Slippery Road. Antioxidants (Basel) 2021; 10:783. [PMID: 34063353 PMCID: PMC8156589 DOI: 10.3390/antiox10050783] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/03/2021] [Accepted: 05/13/2021] [Indexed: 11/17/2022] Open
Abstract
Diabetic retinopathy remains the leading cause of vision loss in working-age adults. The multi-factorial nature of the disease, along with the complex structure of the retina, have hindered in elucidating the exact molecular mechanism(s) of this blinding disease. Oxidative stress appears to play a significant role in its development and experimental models have shown that an increase in cytosolic Reacttive Oxygen Speies (ROS) due to the activation of NADPH oxidase 2 (Nox2), is an early event, which damages the mitochondria, accelerating loss of capillary cells. One of the integral proteins in the assembly of Nox2 holoenzyme, Rac1, is also activated in diabetes, and due to epigenetic modifications its gene transcripts are upregulated. Moreover, addition of hyperlipidemia in a hyperglycemic milieu (type 2 diabetes) further exacerbates Rac1-Nox2-ROS activation, and with time, this accelerates and worsens the mitochondrial damage, ultimately leading to the accelerated capillary cell loss and the development of diabetic retinopathy. Nox2, a multicomponent enzyme, is a good candidate to target for therapeutic interventions, and the inhibitors of Nox2 and Rac1 (and its regulators) are in experimental or clinical trials for other diseases; their possible use to prevent/halt retinopathy will be a welcoming sign for diabetic patients.
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Affiliation(s)
- Renu A Kowluru
- Department of Ophthalmology, Visual and Anatomical Sciences, Kresge Eye Institute, Wayne State University, Detroit, MI 48201, USA
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24
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Quan Y, Liang F, Deng SM, Zhu Y, Chen Y, Xiong J. Mining the Selective Remodeling of DNA Methylation in Promoter Regions to Identify Robust Gene-Level Associations With Phenotype. Front Mol Biosci 2021; 8:597513. [PMID: 33842534 PMCID: PMC8034267 DOI: 10.3389/fmolb.2021.597513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 02/01/2021] [Indexed: 11/13/2022] Open
Abstract
Epigenetics is an essential biological frontier linking genetics to the environment, where DNA methylation is one of the most studied epigenetic events. In recent years, through the epigenome-wide association study (EWAS), researchers have identified thousands of phenotype-related methylation sites. However, the overlaps of identified phenotype-related DNA methylation sites between various studies are often quite small, and it might be due to the fact that methylation remodeling has a certain degree of randomness within the genome. Thus, the identification of robust gene-phenotype associations is crucial to interpreting pathogenesis. How to integrate the methylation values of different sites on the same gene and to mine the DNA methylation at the gene level remains a challenge. A recent study found that the DNA methylation difference of the gene body and promoter region has a strong correlation with gene expression. In this study, we proposed a Statistical difference of DNA Methylation between Promoter and Other Body Region (SIMPO) algorithm to extract DNA methylation values at the gene level. First, by choosing to smoke as an environmental exposure factor, our method led to significant improvements in gene overlaps (from 5 to 17%) between different datasets. In addition, the biological significance of phenotype-related genes identified by SIMPO algorithm is comparable to that of the traditional probe-based methods. Then, we selected two disease contents (e.g., insulin resistance and Parkinson's disease) to show that the biological efficiency of disease-related gene identification increased from 15.43 to 44.44% (p-value = 1.20e-28). In summary, our results declare that mining the selective remodeling of DNA methylation in promoter regions can identify robust gene-level associations with phenotype, and the characteristic remodeling of a given gene's promoter region can reflect the essence of disease.
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Affiliation(s)
- Yuan Quan
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
- Lab of Epigenetics and Advanced Health Technology, Space Science and Technology Institute, Shenzhen, China
| | - Fengji Liang
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, China
| | - Si-Min Deng
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
| | - Yuexing Zhu
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, China
- Aromability Inc., Beijing, China
| | - Ying Chen
- Lab of Epigenetics and Advanced Health Technology, Space Science and Technology Institute, Shenzhen, China
| | - Jianghui Xiong
- Lab of Epigenetics and Advanced Health Technology, Space Science and Technology Institute, Shenzhen, China
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, China
- Aromability Inc., Beijing, China
- Jiangsu Industrial Technology Research Institute (JITRI), Applied Adaptome Immunology Institute, Nanjing, Jiangsu, China
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25
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Jacoba CMP, Celi LA, Silva PS. Biomarkers for Progression in Diabetic Retinopathy: Expanding Personalized Medicine through Integration of AI with Electronic Health Records. Semin Ophthalmol 2021; 36:250-257. [PMID: 33734908 DOI: 10.1080/08820538.2021.1893351] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The goal of personalized diabetes eye care is to accurately predict in real-time the risk of diabetic retinopathy (DR) progression and visual loss. The use of electronic health records (EHR) provides a platform for artificial intelligence (AI) algorithms that predict DR progression to be incorporated into clinical decision-making. By implementing an algorithm on data points from each patient, their risk for retinopathy progression and visual loss can be modeled, allowing them to receive timely treatment. Data can guide algorithms to create models for disease and treatment that may pave the way for more personalized care. Currently, there exist numerous challenges that need to be addressed before reliably building and deploying AI algorithms, including issues with data quality, privacy, intellectual property, and informed consent.
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Affiliation(s)
- Cris Martin P Jacoba
- Joslin Diabetes Centre, Beetham Eye Institute, Boston, MA, USA.,Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Leo Anthony Celi
- Division of Pulmonary, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA.,Laboratory for Computational Physiology, Harvard-MIT Health Sciences and Technology Division, Cambridge, MA, USA.,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Paolo S Silva
- Joslin Diabetes Centre, Beetham Eye Institute, Boston, MA, USA.,Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
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26
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Malhotra S, Sivasubramanian R, Singhal V. Adult obesity and its complications: a pediatric disease? Curr Opin Endocrinol Diabetes Obes 2021; 28:46-54. [PMID: 33229926 DOI: 10.1097/med.0000000000000592] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE OF REVIEW Approximately 2.6 million people die each year secondary to obesity related diseases. The risk of developing serious comorbidities depends on the age of onset as well as duration of obesity. In this review, we discuss trends in BMI trajectories from early childhood to adulthood with latest evidence on comorbidities in adulthood stemming from pediatric obesity and benefits of early intervention and treatment in childhood obesity. RECENT FINDINGS Childhood obesity poses high risk of metabolic and cardiovascular disorders like type 2 diabetes, hypertension, atherosclerosis, coronary artery disease, and some types of cancer in adulthood. Early life obesity also increases risks of developing menstrual irregularities, infertility, and pregnancy complications. Several grave concerns including malignancies, autoimmune disorders, higher asthma morbidity, and psychiatric implications are found to be associated with childhood obesity. Disease outcomes can be transgenerational, causing suboptimal health in children of mothers with obesity. Encouragingly, many risks associated with childhood obesity can be reduced, delayed, or even reversed by early resolution of obesity necessitating close BMI monitoring and treatment early. SUMMARY Early identification and aggressive management of childhood obesity is critical in prevention of debilitating comorbidities in adult life. VIDEO ABSTRACT http://links.lww.com/COE/A19.
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Affiliation(s)
- Sonali Malhotra
- Division of Pediatric Endocrinology, Massachusetts General Hospital
- MGH Weight Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Vibha Singhal
- Division of Pediatric Endocrinology, Massachusetts General Hospital
- MGH Weight Center, Harvard Medical School, Boston, Massachusetts, USA
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27
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Abstract
Emerging evidence suggests the growing importance of "nongenetic factors" in the pathogenesis of atherosclerotic vascular disease. Indeed, the inherited genome determines only part of the risk profile as genomic approaches do not take into account additional layers of biological regulation by "epi"-genetic changes. Epigenetic modifications are defined as plastic chemical changes of DNA/histone complexes which critically affect gene activity without altering the DNA sequence. These modifications include DNA methylation, histone posttranslational modifications, and non-coding RNAs and have the ability to modulate gene expression at both transcriptional and posttranscriptional level. Notably, epigenetic signals are mainly induced by environmental factors (i.e., pollution, smoking, noise) and, once acquired, may be transmitted to the offspring. The inheritance of adverse epigenetic changes may lead to premature deregulation of pathways involved in vascular damage and endothelial dysfunction. Here, we describe the emerging role of epigenetic modifications as fine-tuners of gene transcription in atherosclerosis. Specifically, the following aspects are described in detail: (1) discovery and impact of the epigenome in cardiovascular disease, (2) the epigenetic landscape in atherosclerosis; (3) inheritance of epigenetic signals and premature vascular disease; (4) epigenetic control of lipid metabolism, vascular oxidative stress, inflammation, autophagy, and apoptosis; (5) epigenetic biomarkers in patients with atherosclerosis; (6) novel therapeutic strategies to modulate epigenetic marks. Understanding the individual epigenetic profile may pave the way for new approaches to determine cardiovascular risk and to develop personalized therapies to treat atherosclerosis and its complications.
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28
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Yin J, Han M, Li L, Li Y, Liu Z, Yang J, Liu Y. To Assess Liraglutide's Therapeutic Effect in Patients with Type 2 Diabetes Mellitus Using Flash Glucose Monitoring System. Diabetes Metab Syndr Obes 2021; 14:4399-4407. [PMID: 34744445 PMCID: PMC8565899 DOI: 10.2147/dmso.s331833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/15/2021] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Liraglutide, a type of glucagon-like peptide-1 receptor agonist, has significant anti-hyperglycaemic activity without increasing the incidence of hypoglycaemia. In addition, it can improve β-cell function and insulin resistance. The flash glucose monitoring system (FGMS) is a novel method to document consecutive and detailed interstitial glucose levels, further reflecting blood glucose levels. This study aimed to investigate the therapeutic effect of liraglutide on blood glucose management (glucose variability, hyperglycaemia, and the incidence of hypoglycaemia), β-cell function, and insulin resistance in patients with diabetes. PATIENTS AND METHODS Thirty-three patients with type 2 diabetes mellitus were recruited in this study. On the basis of metformin monotherapy, these patients received liraglutide add-on treatment for 3 months. The FGMS was used to document glucose levels before and after add-on treatment. Parameters of glucose variability, blood glucose levels at specific time periods, and the incidence of hypoglycaemia were assessed according to FGMS data and compared before and after liraglutide add-on treatment. Further, β-cell function and insulin resistance were assessed and compared before and after liraglutide add-on treatment. RESULTS According to FGMS monitoring data, liraglutide add-on treatment significantly improved general, within-day, and day-to-day glucose variability and the glucose-target-rate. Further, the specifically analysed blood glucose levels at different time periods showed that blood glucose levels significantly decreased at nocturnal, fasting, and postprandial periods after add-on treatment. The incidence of hypoglycaemia was comparable during the whole day, daytime, and night-time according to the prespecified cutoffs (3.9 mmol/L and 3.0 mmol/L) before and after add-on treatment. Analysis of other assessed parameters revealed significant differences in glycosylated hemoglobin A1c and fasting blood glucose levels as well as parameters of β-cell function and insulin resistance before and after add-on treatment. CONCLUSION In type 2 diabetes mellitus, liraglutide treatment can effectively decrease glucose variability and ameliorate hyperglycaemia without increasing the incidence of hypoglycaemia. In addition, liraglutide can significantly improve the β-cell function and insulin resistance.
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Affiliation(s)
- Jianhong Yin
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
| | - Minmin Han
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
| | - Linhui Li
- Department of Endocrinology, Taiyuan Central Hospital, Taiyuan, Shanxi, People’s Republic of China
| | - Yang Li
- Department of Infectious Diseases, Linfen People’s Hospital, Linfen, Shanxi, People’s Republic of China
| | - Zi’ang Liu
- Third Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
- The Affiliated Bethune Hospital of Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
| | - Jing Yang
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
- Correspondence: Jing Yang; Yunfeng Liu Department of Endocrinology, First Hospital of Shanxi Medical University, No. 85 Jiefang Nan Road, Yingze District, Taiyuan, Shanxi Province, People’s Republic of ChinaTel +86 18703416196Fax +86 351-4639758 Email ;
| | - Yunfeng Liu
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, People’s Republic of China
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29
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Kopf S, Kumar V, Kender Z, Han Z, Fleming T, Herzig S, Nawroth PP. Diabetic Pneumopathy-A New Diabetes-Associated Complication: Mechanisms, Consequences and Treatment Considerations. Front Endocrinol (Lausanne) 2021; 12:765201. [PMID: 34899603 PMCID: PMC8655305 DOI: 10.3389/fendo.2021.765201] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/22/2021] [Indexed: 01/04/2023] Open
Abstract
Patients with diabetes are over-represented among the total cases reported with "idiopathic" pulmonary fibrosis (IPF). This raises the question, whether this is an association only or whether diabetes itself can cause pulmonary fibrosis. Recent studies in mouse models of type 1 and type 2 diabetes demonstrated that diabetes causes pulmonary fibrosis. Both types of diabetes trigger a cascade, starting with increased DNA damage, an impaired DNA repair, and leading to persistent DNA damage signaling. This response, in turn, induces senescence, a senescence-associated-secretory phenotype (SASP), marked by the release of pro-inflammatory cytokines and growth factors, finally resulting in fibrosis. Restoring DNA repair drives fibrosis into remission, thus proving causality. These data can be translated clinically to patients with type 2 diabetes, characterized by long-term diabetes and albuminuria. Hence there are several arguments, to substitute the term "idiopathic" pulmonary fibrosis (IPF) in patients with diabetes (and exclusion of other causes of lung diseases) by the term "diabetes-induced pulmonary fibrosis" (DiPF). However, future studies are required to establish this term and to study whether patients with diabetes respond to the established therapies similar to non-diabetic patients.
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Affiliation(s)
- Stefan Kopf
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
| | - Varun Kumar
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
| | - Zoltan Kender
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
| | - Zhe Han
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Fleming
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
| | - Stephan Herzig
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
- Institute for Diabetes and Cancer, Helmholtz Center Munich, Munich-Neuherberg, Germany
- Joint Heidelberg-Institute for Diabetes and Cancer (IDC) Translational Diabetes Programme, Helmholtz-Zentrum, Munich, Germany
| | - Peter P. Nawroth
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
- Joint Heidelberg-Institute for Diabetes and Cancer (IDC) Translational Diabetes Programme, Helmholtz-Zentrum, Munich, Germany
- *Correspondence: Peter P. Nawroth,
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30
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Rehman S, Aatif M, Rafi Z, Khan MY, Shahab U, Ahmad S, Farhan M. Effect of non-enzymatic glycosylation in the epigenetics of cancer. Semin Cancer Biol 2020; 83:543-555. [DOI: 10.1016/j.semcancer.2020.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 02/09/2023]
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Bansal A, Balasubramanian S, Dhawan S, Leung A, Chen Z, Natarajan R. Integrative Omics Analyses Reveal Epigenetic Memory in Diabetic Renal Cells Regulating Genes Associated With Kidney Dysfunction. Diabetes 2020; 69:2490-2502. [PMID: 32747424 PMCID: PMC7576555 DOI: 10.2337/db20-0382] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/30/2020] [Indexed: 12/20/2022]
Abstract
Diabetic kidney disease (DKD) is a major complication of diabetes and the leading cause of end-stage renal failure. Epigenetics has been associated with metabolic memory in which prior periods of hyperglycemia enhance the future risk of developing DKD despite subsequent glycemic control. To understand the mechanistic role of such epigenetic memory in human DKD and to identify new therapeutic targets, we profiled gene expression, DNA methylation, and chromatin accessibility in kidney proximal tubule epithelial cells (PTECs) derived from subjects with and without type 2 diabetes (T2D). T2D-PTECs displayed persistent gene expression and epigenetic changes with and without transforming growth factor-β1 treatment, even after culturing in vitro under similar conditions as nondiabetic PTECs, signified by deregulation of fibrotic and transport-associated genes (TAGs). Motif analysis of differential DNA methylation and chromatin accessibility regions associated with genes differentially regulated in T2D revealed enrichment for SMAD3, HNF4A, and CTCF transcription factor binding sites. Furthermore, the downregulation of several TAGs in T2D (including CLDN10, CLDN14, CLDN16, SLC16A2, and SLC16A5) was associated with promoter hypermethylation, decreased chromatin accessibility, and reduced enrichment of HNF4A, histone H3-lysine-27-acetylation, and CTCF. Together, these integrative analyses reveal epigenetic memory underlying the deregulation of key target genes in T2D-PTECs that may contribute to sustained renal dysfunction in DKD.
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Affiliation(s)
- Anita Bansal
- Department of Diabetes Complications and Metabolism, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA
| | - Sreeram Balasubramanian
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA
| | - Sangeeta Dhawan
- Department of Translational Research and Cellular Therapeutics, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA
| | - Amy Leung
- Department of Diabetes Complications and Metabolism, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA
| | - Zhen Chen
- Department of Diabetes Complications and Metabolism, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA
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Hu M, Wu Y, Yang C, Wang X, Wang W, Zhou L, Zeng T, Zhou J, Wang C, Lao G, Yan L, Ren M. Novel Long Noncoding RNA lnc-URIDS Delays Diabetic Wound Healing by Targeting Plod1. Diabetes 2020; 69:2144-2156. [PMID: 32801140 DOI: 10.2337/db20-0147] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 07/29/2020] [Indexed: 12/15/2022]
Abstract
Impaired wound healing is one of the main causes of diabetic foot ulcerations. However, the exact mechanism of delayed wound healing in diabetes is not fully understood. Long noncoding RNAs (lncRNAs) are widely involved in a variety of biological processes and diseases, including diabetes and its associated complications. In this study, we identified a novel lncRNA, MRAK052872, named lncRNA UpRegulated in Diabetic Skin (lnc-URIDS), which regulates wound healing in diabetes. lnc-URIDS was highly expressed in diabetic skin and dermal fibroblasts treated with advanced glycation end products (AGEs). lnc-URIDS knockdown promoted migration of dermal fibroblasts under AGEs treatment in vitro and accelerated diabetic wound healing in vivo. Mechanistically, lnc-URIDS interacts with procollagen-lysine, 2-oxoglutarate 5-dioxygenase 1 (Plod1), a critical enzyme responsible for collagen cross-linking. The binding of lnc-URIDS to Plod1 results in a decreased protein stability of Plod1, which ultimately leads to the dysregulation of collagen production and deposition and delays wound healing. Collectively, this study identifies a novel lncRNA that regulates diabetic wound healing by targeting Plod1. The findings of the current study offer some insight into the potential mechanism for the delayed wound healing in diabetes and provide a potential therapeutic target for diabetic foot.
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Affiliation(s)
- Mengdie Hu
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yuxi Wu
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chuan Yang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaoyi Wang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Wang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Liyan Zhou
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tingting Zeng
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jing Zhou
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chuan Wang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Guojuan Lao
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li Yan
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Meng Ren
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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New Mechanisms of Vascular Dysfunction in Cardiometabolic Patients: Focus on Epigenetics. High Blood Press Cardiovasc Prev 2020; 27:363-371. [PMID: 32740853 DOI: 10.1007/s40292-020-00400-2] [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: 06/23/2020] [Accepted: 07/21/2020] [Indexed: 12/28/2022] Open
Abstract
Epigenetic processing takes centre stage in cardiometabolic diseases (obesity, metabolic syndrome, type 2 diabetes, hypertension), where it participates in adiposity, inflammation, endothelial dysfunction, vascular insulin resistance and atherosclerosis. Epigenetic modifications, defined as heritable changes in gene expression that do not entail mutation in the DNA sequence, are mainly induced by environmental stimuli (stress, pollution, cigarette smoking) and are gaining considerable interest due to their causal role in cardiovascular disease, and their amenability to pharmacological intervention. Importantly, epigenetic modifications acquired during life can be transmitted to the offspring and exert their biological effects across multiple generations. Indeed, such transgenerational transmission of epigenetic signals may contribute to anticipating cardiovascular and metabolic disease phenotypes already in children and young adults. A deeper understanding of environmental factors and their effects on the epigenetic machinery and transcriptional programs is warranted to develop effective mechanism-based therapeutic strategies. The clinical application of epigenetic drugs-also known as "epi-drugs"-is currently exploding in the field of cardiovascular disease. The present review describes the main epigenetic networks underlying cardiometabolic alterations and sheds light on specific points of intervention for pharmacological reprogramming in this setting.
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Chen Z, Miao F, Braffett BH, Lachin JM, Zhang L, Wu X, Roshandel D, Carless M, Li XA, Tompkins JD, Kaddis JS, Riggs AD, Paterson AD, Natarajan R. DNA methylation mediates development of HbA1c-associated complications in type 1 diabetes. Nat Metab 2020; 2:744-762. [PMID: 32694834 PMCID: PMC7590966 DOI: 10.1038/s42255-020-0231-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 05/29/2020] [Indexed: 01/09/2023]
Abstract
Metabolic memory, the persistent benefits of early glycaemic control on preventing and/or delaying the development of diabetic complications, has been observed in the Diabetes Control and Complications Trial (DCCT) and in the Epidemiology of Diabetes Interventions and Complications (EDIC) follow-up study, but the underlying mechanisms remain unclear. Here, we show the involvement of epigenetic DNA methylation (DNAme) in metabolic memory by examining its associations with preceding glycaemic history, and with subsequent development of complications over an 18-yr period in the blood DNA of 499 randomly selected DCCT participants with type 1 diabetes who are also followed up in EDIC. We demonstrate the associations between DNAme near the closeout of DCCT and mean HbA1c during DCCT (mean-DCCT HbA1c) at 186 cytosine-guanine dinucleotides (CpGs) (FDR < 15%, including 43 at FDR < 5%), many of which were located in genes related to complications. Exploration studies into biological function reveal that these CpGs are enriched in binding sites for the C/EBP transcription factor, as well as enhancer/transcription regions in blood cells and haematopoietic stem cells, and open chromatin states in myeloid cells. Mediation analyses show that, remarkably, several CpGs in combination explain 68-97% of the association of mean-DCCT HbA1c with the risk of complications during EDIC. In summary, DNAme at key CpGs appears to mediate the association between hyperglycaemia and complications in metabolic memory, through modifying enhancer activity at myeloid and other cells.
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Affiliation(s)
- Zhuo Chen
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Feng Miao
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Barbara H Braffett
- The Biostatistics Center, The George Washington University, Rockville, MD, USA
| | - John M Lachin
- The Biostatistics Center, The George Washington University, Rockville, MD, USA
| | - Lingxiao Zhang
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Xiwei Wu
- Integrative Genomics Core, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Delnaz Roshandel
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Melanie Carless
- Department of Biology, University of Texas at San Antonio, San Antonio, TX, USA
| | - Xuejun Arthur Li
- Biostatistics Core, Department of Computational and Quantitative Medicine, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Joshua D Tompkins
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - John S Kaddis
- Department of Diabetes Immunology, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
- Department of Diabetes and Cancer Discovery Science, Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Arthur D Riggs
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Andrew D Paterson
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA.
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Mohammed SA, Ambrosini S, Lüscher T, Paneni F, Costantino S. Epigenetic Control of Mitochondrial Function in the Vasculature. Front Cardiovasc Med 2020; 7:28. [PMID: 32195271 PMCID: PMC7064473 DOI: 10.3389/fcvm.2020.00028] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 02/19/2020] [Indexed: 12/24/2022] Open
Abstract
The molecular signatures of epigenetic regulation and chromatin architecture are emerging as pivotal regulators of mitochondrial function. Recent studies unveiled a complex intersection among environmental factors, epigenetic signals, and mitochondrial metabolism, ultimately leading to alterations of vascular phenotype and increased cardiovascular risk. Changing environmental conditions over the lifetime induce covalent and post-translational chemical modification of the chromatin template which sensitize the genome to establish new transcriptional programs and, hence, diverse functional states. On the other hand, metabolic alterations occurring in mitochondria affect the availability of substrates for chromatin-modifying enzymes, thus leading to maladaptive epigenetic signatures altering chromatin accessibility and gene transcription. Indeed, several components of the epigenetic machinery require intermediates of cellular metabolism (ATP, AcCoA, NADH, α-ketoglutarate) for enzymatic function. In the present review, we describe the emerging role of epigenetic modifications as fine tuners of gene transcription in mitochondrial dysfunction and vascular disease. Specifically, the following aspects are described in detail: (i) mitochondria and vascular function, (ii) mitochondrial ROS, (iii) epigenetic regulation of mitochondrial function; (iv) the role of mitochondrial metabolites as key effectors for chromatin-modifying enzymes; (v) epigenetic therapies. Understanding epigenetic routes may pave the way for new approaches to develop personalized therapies to prevent mitochondrial insufficiency and its complications.
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Affiliation(s)
- Shafeeq A Mohammed
- Center for Molecular Cardiology, University of Zürich, Zurich, Switzerland
| | - Samuele Ambrosini
- Center for Molecular Cardiology, University of Zürich, Zurich, Switzerland
| | - Thomas Lüscher
- Center for Molecular Cardiology, University of Zürich, Zurich, Switzerland.,Research, Education and Development, Royal Brompton and Harefield Hospital Trust and Imperial College, London, United Kingdom
| | - Francesco Paneni
- Center for Molecular Cardiology, University of Zürich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
| | - Sarah Costantino
- Center for Molecular Cardiology, University of Zürich, Zurich, Switzerland
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Kato M, Natarajan R. Epigenetics and epigenomics in diabetic kidney disease and metabolic memory. Nat Rev Nephrol 2020; 15:327-345. [PMID: 30894700 DOI: 10.1038/s41581-019-0135-6] [Citation(s) in RCA: 300] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The development and progression of diabetic kidney disease (DKD), a highly prevalent complication of diabetes mellitus, are influenced by both genetic and environmental factors. DKD is an important contributor to the morbidity of patients with diabetes mellitus, indicating a clear need for an improved understanding of disease aetiology to inform the development of more efficacious treatments. DKD is characterized by an accumulation of extracellular matrix, hypertrophy and fibrosis in kidney glomerular and tubular cells. Increasing evidence shows that genes associated with these features of DKD are regulated not only by classical signalling pathways but also by epigenetic mechanisms involving chromatin histone modifications, DNA methylation and non-coding RNAs. These mechanisms can respond to changes in the environment and, importantly, might mediate the persistent long-term expression of DKD-related genes and phenotypes induced by prior glycaemic exposure despite subsequent glycaemic control, a phenomenon called metabolic memory. Detection of epigenetic events during the early stages of DKD could be valuable for timely diagnosis and prompt treatment to prevent progression to end-stage renal disease. Identification of epigenetic signatures of DKD via epigenome-wide association studies might also inform precision medicine approaches. Here, we highlight the emerging role of epigenetics and epigenomics in DKD and the translational potential of candidate epigenetic factors and non-coding RNAs as biomarkers and drug targets for DKD.
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Affiliation(s)
- Mitsuo Kato
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA.
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Diabetes Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, USA.
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37
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Abstract
Background Organisms can be primed by metabolic exposures to continue expressing response genes even once the metabolite is no longer available, and can affect the speed and magnitude of responsive gene expression during subsequent exposures. This “metabolic transcriptional memory” can have a profound impact on the survivability of organisms in fluctuating environments. Scope of review Here I present several examples of metabolic transcriptional memory in the microbial world and discuss what is known so far regarding the underlying mechanisms, which mainly focus on chromatin modifications, protein inheritance, and broad changes in metabolic network. From these lessons learned in microbes, some insights into the yet understudied human metabolic memory can be gained. I thus discuss the implications of metabolic memory in disease progression in humans – i.e., the memory of high blood sugar exposure and the resulting effects on diabetic complications. Major conclusions Carbon source shifts from glucose to other less preferred sugars such as lactose, galactose, and maltose for energy metabolism as well as starvation of a signal transduction precursor sugar inositol are well-studied examples of metabolic transcriptional memory in Escherichia coli and Saccharomyces cerevisiae. Although the specific factors guiding metabolic transcriptional memory are not necessarily conserved from microbes to humans, the same basic mechanisms are in play, as is observed in hyperglycemic memory. Exploration of new metabolic transcriptional memory systems as well as further detailed mechanistic analyses of known memory contexts in microbes is therefore central to understanding metabolic memory in humans, and may be of relevance for the successful treatment of the ever-growing epidemic of diabetes. Metabolic exposures can prime genes to have memory. Memory of carbon source shifts occurs in all kingdoms of life. Memory is maintained through multiple mechanisms including chromatin modifications, proteins, and metabolic network. Metabolic transcriptional memory in unicellular organisms is a part of “bet-hedging” strategies to ensure survival. Hyperglycemic memory in humans contributes to diabetes and aging.
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Affiliation(s)
- Poonam Bheda
- Institute of Functional Epigenetics, Helmholtz Zentrum München, Neuherberg, Germany.
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38
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Souto SB, Campos JR, Fangueiro JF, Silva AM, Cicero N, Lucarini M, Durazzo A, Santini A, Souto EB. Multiple Cell Signalling Pathways of Human Proinsulin C-Peptide in Vasculopathy Protection. Int J Mol Sci 2020; 21:E645. [PMID: 31963760 PMCID: PMC7013900 DOI: 10.3390/ijms21020645] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 12/19/2022] Open
Abstract
A major hallmark of diabetes is a constant high blood glucose level (hyperglycaemia), resulting in endothelial dysfunction. Transient or prolonged hyperglycemia can cause diabetic vasculopathy, a secondary systemic damage. C-Peptide is a product of cleavage of proinsulin by a serine protease that occurs within the pancreatic β-cells, being secreted in similar amounts as insulin. The biological activity of human C-peptide is instrumental in the prevention of diabetic neuropathy, nephropathy and other vascular complications. The main feature of type 1 diabetes mellitus is the lack of insulin and of C-peptide, but the progressive β-cell loss is also observed in later stage of type 2 diabetes mellitus. C-peptide has multifaceted effects in animals and diabetic patients due to the activation of multiple cell signalling pathways, highlighting p38 mitogen-activated protein kinase and extracellular signal-regulated kinase ½, Akt, as well as endothelial nitric oxide production. Recent works highlight the role of C-peptide in the prevention and amelioration of diabetes and also in organ-specific complications. Benefits of C-peptide in microangiopathy and vasculopathy have been shown through conservation of vascular function, and also in the prevention of endothelial cell death, microvascular permeability, neointima formation, and in vascular inflammation. Improvement of microvascular blood flow by replacing a physiological amount of C-peptide, in several tissues of diabetic animals and humans, mainly in nerve tissue, myocardium, skeletal muscle, and kidney has been described. A review of the multiple cell signalling pathways of human proinsulin C-peptide in vasculopathy protection is proposed, where the approaches to move beyond the state of the art in the development of innovative and effective therapeutic options of diabetic neuropathy and nephropathy are discussed.
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Affiliation(s)
- Selma B. Souto
- Department of Endocrinology, Hospital de São João, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal;
| | - Joana R. Campos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.R.C.); (J.F.F.)
| | - Joana F. Fangueiro
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.R.C.); (J.F.F.)
| | - Amélia M. Silva
- Department of Biology and Environment, University of Trás-os-Montes e Alto Douro, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal;
- Centre for Research and Technology of Agro-Environmental and Biological Sciences, CITAB, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal
| | - Nicola Cicero
- Dipartimento di Scienze biomediche, odontoiatriche e delle immagini morfologiche e funzionali, Università degli Studi di Messina, Polo Universitario Annunziata, 98168 Messina, Italy;
| | - Massimo Lucarini
- CREA—Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy; (M.L.); (A.D.)
| | - Alessandra Durazzo
- CREA—Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy; (M.L.); (A.D.)
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - Eliana B. Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.R.C.); (J.F.F.)
- CEB—Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Abstract
PURPOSE OF THE REVIEW Kidney disease is the major cause of morbidity and mortality in patients with diabetes. Poor glycemic control shows the strongest correlation with diabetic kidney disease (DKD) development. A period of poor glycemia increases kidney disease risk even after an extended period of improved glucose control-a phenomenon called metabolic memory. Changes in the epigenome have been proposed to mediate the metabolic memory effect, as epigenome editing enzymes are regulated by substrates of intermediate metabolism and changes in the epigenome can be maintained after cell division. RECENT FINDINGS Epigenome-wide association studies (EWAS) have reported differentially methylated cytosines in blood and kidney samples of DKD subjects when compared with controls. Differentially methylated cytosines were enriched on regulatory regions and some correlated with gene expression. Methylation changes predicted the speed of kidney function decline. Site-specific methylome editing tools now can be used to interrogate the functional role of differentially methylated regions. Methylome changes can be detected in blood and kidneys of patients with DKD. Methylation changes can predict future kidney function changes. Future studies shall determine their role in disease development.
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Affiliation(s)
- Tamas Aranyi
- Renal Electrolyte and Hypertension Division, Department of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd, 12-123 Smilow Translational Research Building, Philadelphia, PA, 19104, USA
| | - Katalin Susztak
- Renal Electrolyte and Hypertension Division, Department of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd, 12-123 Smilow Translational Research Building, Philadelphia, PA, 19104, USA.
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40
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Singh S, Sonkar SK, Sonkar GK, Mahdi AA. Diabetic kidney disease: A systematic review on the role of epigenetics as diagnostic and prognostic marker. Diabetes Metab Res Rev 2019; 35:e3155. [PMID: 30892801 DOI: 10.1002/dmrr.3155] [Citation(s) in RCA: 8] [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: 08/14/2018] [Revised: 01/26/2019] [Accepted: 03/14/2019] [Indexed: 12/13/2022]
Abstract
Diabetic kidney disease is one of the most serious microvascular complications and among the leading causes of end stage renal disease. Persistently increasing albuminuria has been considered to be the central hallmark of nephropathy. However, albuminuria can indicate kidney damage for clinicians; it is not a specific biomarker for prediction of diabetic kidney disease prior to the onset of this devastating complication, and in fact all individuals with microalbuminuria do not progress to overt nephropathy. Controlled glycemia is unable to prevent nephropathy in all diabetic individuals indicating the role of other factors in progression of diabetic kidney disease. There are numerous cellular and molecular defects persisting prior to appearance of clinical symptoms. So, there is an urgent need to look for easy, novel, and accurate way to detect diabetic kidney disease prior to its beginning or at the infancy stage so that its progression can be slowed or arrested. It is now accepted that initiation and progression of diabetic kidney disease are a result of complex interactions between genetic and environmental factors. Environmental signals can alter the intracellular pathways by chromatin modifiers and regulate gene expression patterns leading to diabetes and its complications. In the present review, we have discussed a possible link between aberrant DNA methylation and altered gene expression in diabetic kidney disease. Drugs targeting to reverse epigenetic alteration can retard or stop the development of this devastating disease, just by breaking the chain of events occurring prior to the development of this microvascular complication in patients with diabetes.
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Affiliation(s)
- Sangeeta Singh
- Department of Biochemistry, King George's Medical University, U.P., Lucknow, India
| | | | | | - Abbas Ali Mahdi
- Department of Biochemistry, King George's Medical University, U.P., Lucknow, India
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Yan N, Mu K, An XF, Li L, Qin Q, Song RH, Yao QM, Shao XQ, Zhang JA. Aberrant Histone Methylation in Patients with Graves' Disease. Int J Endocrinol 2019; 2019:1454617. [PMID: 31341471 PMCID: PMC6612977 DOI: 10.1155/2019/1454617] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 05/01/2019] [Accepted: 05/20/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Graves' disease (GD) is an organ-specific autoimmune disease. Accumulated data have indicated that aberrant epigenetic modifications are associated with many autoimmune disorders. However, it remains unknown whether histone methylation plays a role in the pathogenesis of GD. In the present study, we aimed to assess histone modification patterns in peripheral blood mononuclear cells (PBMCs) from GD patients. The rate (degree) of H3K4 and H3K9 methylation and the expressions of histone-modifying genes were investigated. METHODS A total of 68 GD patients and 32 healthy controls were enrolled in this study. Global histone H3K4/H3K9 methylation of PBMCs was evaluated by the EpiQuik™ global histone H3K4/H3K9 methylation assay kit. The expressions of histone methyltransferases (HMTs) and histone demethylases (HDMs) at the mRNA level were determined by real-time quantitative polymerase chain reaction. RESULTS Global histone H3K9 methylation in PBMCs of GD patients was significantly decreased compared with that in the healthy controls (P=0.007). The expressions of HMTs (SUV39H1 and SUV39H2) at the mRNA level were significantly decreased in PBMCs from GD patients compared with healthy controls (P<0.001), whereas the SETD1A expression at the mRNA level was significantly increased in GD patients compared with healthy controls (P=0.004). In addition, the expressions of HDMs, including JHDM2A and JMJD2A, at the mRNA level were significantly increased in GD patients compared with healthy controls (P<0.001; P=0.007). Moreover, the mRNA expression levels of JARID1A and LSD1 did not significantly differ in GD patients and healthy controls (P>0.05). CONCLUSIONS These findings firstly suggested that the histone methylation was aberrant in PBMCs of GD patients, which could be possibly attributed to the deregulation of epigenetic modifier genes. Abnormal histone methylation modification may be involved in the pathogenesis of GD.
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Affiliation(s)
- Ni Yan
- Department of Endocrinology, Shaanxi Provincial People's Hospital, No. 256 West Youyi Road, Beilin District, Xi'an 710068, China
| | - Kaida Mu
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong New District, Shanghai 201318, China
| | - Xiao-fei An
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longyang Road, Jinshan District, Shanghai 201508, China
- Department of Endocrinology, The Affiliated Hospital of Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Qixia District, Nanjing 210023, China
| | - Ling Li
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longyang Road, Jinshan District, Shanghai 201508, China
| | - Qiu Qin
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong New District, Shanghai 201318, China
| | - Rong-hua Song
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong New District, Shanghai 201318, China
| | - Qiu-ming Yao
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longyang Road, Jinshan District, Shanghai 201508, China
| | - Xiao-qing Shao
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longyang Road, Jinshan District, Shanghai 201508, China
| | - Jin-an Zhang
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong New District, Shanghai 201318, China
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Duraisamy AJ, Mohammad G, Kowluru RA. Mitochondrial fusion and maintenance of mitochondrial homeostasis in diabetic retinopathy. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1617-1626. [PMID: 30922813 DOI: 10.1016/j.bbadis.2019.03.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/11/2019] [Accepted: 03/22/2019] [Indexed: 01/01/2023]
Abstract
Mitochondria are dynamic in structure, and undergo continuous fusion-fission to maintain their homeostasis. In diabetes, retinal mitochondria are swollen, their membrane is damaged and mitochondrial fusion protein, mitofusin 2 (Mfn2), is decreased. DNA methylation machinery is also activated and methylation status of genes implicated in mitochondrial damage and biogenesis is altered. This study aims to investigate the role of mitochondrial fusion in the development of diabetic retinopathy, and to illustrate the molecular mechanism responsible for Mfn2 suppression. Using human retinal endothelial cells, manipulated for Mfn2, we investigated the role of fusion in mitochondrial structural and functional damage in diabetes. The molecular mechanism of its suppression in diabetic milieu was determined by investigating Mfn2 promoter DNA methylation, and confirmed using molecular and pharmacological inhibitors of DNA methylation. Similar studies were performed in the retinal microvasculature (prepared by hypotonic shock method) of diabetic rats, and human donors with documented diabetic retinopathy. Overexpression of Mfn2 prevented glucose-induced increase in mitochondrial fragmentation, decrease in complex III activity and increase in membrane permeability, mtDNA damage and apoptosis. High glucose hypermethylated Mfn2 promoter and decreased transcription factor (SP1) binding, and Dnmt inhibition protected Mfn2 promoter from these changes. In streptozotocin-induced diabetic rats, intravitreal administration of Dnmt1-siRNA attenuated Mfn2 promoter hypermethylation and restored its expression. Human donors with diabetic retinopathy confirmed Mfn2 promoter DNA hypermethylation. Thus, regulating Mfn2 and its epigenetic modifications by molecular/pharmacological means will protect mitochondrial homeostasis in diabetes, and could attenuate the development of retinopathy in diabetic patients.
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MESH Headings
- Adult
- Aged
- Animals
- Cell Line
- DNA (Cytosine-5-)-Methyltransferase 1/antagonists & inhibitors
- DNA (Cytosine-5-)-Methyltransferase 1/genetics
- DNA (Cytosine-5-)-Methyltransferase 1/metabolism
- DNA Methylation
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Diabetic Retinopathy/genetics
- Diabetic Retinopathy/metabolism
- Diabetic Retinopathy/pathology
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Epigenesis, Genetic
- GTP Phosphohydrolases/genetics
- GTP Phosphohydrolases/metabolism
- Homeostasis/genetics
- Humans
- Male
- Middle Aged
- Mitochondria/genetics
- Mitochondria/metabolism
- Mitochondria/pathology
- Mitochondrial Dynamics
- Mitochondrial Proteins/genetics
- Mitochondrial Proteins/metabolism
- Promoter Regions, Genetic
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Rats
- Rats, Wistar
- Retina/metabolism
- Retina/pathology
- Signal Transduction
- Sp1 Transcription Factor/genetics
- Sp1 Transcription Factor/metabolism
- Streptozocin/administration & dosage
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Affiliation(s)
- Arul J Duraisamy
- Kresge Eye Institute, Department of Ophthalmology, Visual & Anatomical Sciences, Wayne State University, Detroit, MI, United States of America
| | - Ghulam Mohammad
- Kresge Eye Institute, Department of Ophthalmology, Visual & Anatomical Sciences, Wayne State University, Detroit, MI, United States of America
| | - Renu A Kowluru
- Kresge Eye Institute, Department of Ophthalmology, Visual & Anatomical Sciences, Wayne State University, Detroit, MI, United States of America.
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43
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Affiliation(s)
- Mark E Pepin
- Department of Pathology, Division of Molecular & Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Adam R Wende
- Department of Pathology, Division of Molecular & Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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44
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Echeverria C, Eltit F, Santibanez JF, Gatica S, Cabello-Verrugio C, Simon F. Endothelial dysfunction in pregnancy metabolic disorders. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165414. [PMID: 30794867 DOI: 10.1016/j.bbadis.2019.02.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 02/03/2019] [Accepted: 02/05/2019] [Indexed: 12/19/2022]
Abstract
In recent years, the vascular endothelium has gained attention as a key player in the initiation and development of pregnancy disorders. Endothelium acts as an endocrine organ that preserves the homeostatic balance by responding to changes in metabolic status. However, in metabolic disorders, endothelial cells adopt a dysfunctional function, losing their normal responsiveness. During pregnancy, several metabolic changes occur, in which endothelial function decisively participates. Similarly, when pregnancy metabolic disorders occur, endothelial dysfunction plays a key role in pathogenesis. This review outlines the main findings regarding endothelial dysfunction in three main metabolic pathological conditions observed during pregnancy: gestational diabetes, hypertensive disorders, and obesity and hyperlipidemia. Organ, histological and cellular characteristics were thoroughly described. Also, we focused in discussing the underlying molecular mechanisms involved in the cellular signaling pathways that mediate responses in these pathological conditions.
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Affiliation(s)
- Cesar Echeverria
- Facultad de Medicina, Universidad de Atacama, Copayapu 485, 1531772 Copiapo, Chile
| | - Felipe Eltit
- Department of Materials Engineering, University of British Columbia, Vancouver, Canada; School of Biomedical Engineering, University of British Columbia, Vancouver, Canada
| | - Juan F Santibanez
- Department of Molecular Oncology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia; Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - Sebastian Gatica
- Departamento de Ciencias Biologicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, 8331150 Santiago, Chile
| | - Claudio Cabello-Verrugio
- Departamento de Ciencias Biologicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, 8331150 Santiago, Chile; Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago, Chile
| | - Felipe Simon
- Departamento de Ciencias Biologicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, 8331150 Santiago, Chile.
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45
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Costantino S, Libby P, Kishore R, Tardif JC, El-Osta A, Paneni F. Epigenetics and precision medicine in cardiovascular patients: from basic concepts to the clinical arena. Eur Heart J 2018; 39:4150-4158. [PMID: 29069341 PMCID: PMC6293269 DOI: 10.1093/eurheartj/ehx568] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/04/2017] [Accepted: 09/22/2017] [Indexed: 12/11/2022] Open
Abstract
Cardiovascular diseases (CVDs) remain the leading cause of mortality worldwide and also inflict major burdens on morbidity, quality of life, and societal costs. Considering that CVD preventive medications improve vascular outcomes in less than half of patients (often relative risk reductions range from 12% to 20% compared with placebo), precision medicine offers an attractive approach to refine the targeting of CVD medications to responsive individuals in a population and thus allocate resources more wisely and effectively. New tools furnished by advances in basic science and translational medicine could help achieve this goal. This approach could reach beyond the practitioners 'eyeball' assessment or venerable markers derived from the physical examination and standard laboratory evaluation. Advances in genetics have identified novel pathways and targets that operate in numerous diseases, paving the way for 'precision medicine'. Yet the inherited genome determines only part of an individual's risk profile. Indeed, standard genomic approaches do not take into account the world of regulation of gene expression by modifications of the 'epi'genome. Epigenetic modifications defined as 'heritable changes to the genome that do not involve changes in DNA sequence' have emerged as a new layer of biological regulation in CVD and could advance individualized risk assessment as well as devising and deploying tailored therapies. This review, therefore, aims to acquaint the cardiovascular community with the rapidly advancing and evolving field of epigenetics and its implications in cardiovascular precision medicine.
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Affiliation(s)
- Sarah Costantino
- Center for Molecular Cardiology, University of Zürich, Wagistrasse 12, Schlieren, Zurich, Switzerland
| | - Peter Libby
- Brigham and Women’s Hospital, Division of Cardiovascular Medicine, Boston, MA, USA
| | - Raj Kishore
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA, USA
- Department of Pharmacology, Temple University, Philadelphia, PA, USA
| | - Jean-Claude Tardif
- Montreal Health Innovations Coordinating Center (MHICC), Montreal, Canada
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Assam El-Osta
- Central Clinical School, Faculty of Medicine, Monash University, Victoria, Australia
- Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
- Hong Kong Institute of Diabetes and Obesity, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR
| | - Francesco Paneni
- Center for Molecular Cardiology, University of Zürich, Wagistrasse 12, Schlieren, Zurich, Switzerland
- University Heart Center, Cardiology, University Hospital Zürich, Zürich, Switzerland
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46
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Zhang Y, Zheng Y, Li J, Nie L, Hu Y, Wang F, Liu H, Fernandes SM, Zhong Q, Li X, Schnaar RL, Jia Y. Immunoregulatory Siglec ligands are abundant in human and mouse aorta and are up-regulated by high glucose. Life Sci 2018; 216:189-199. [PMID: 30471282 DOI: 10.1016/j.lfs.2018.11.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/18/2018] [Accepted: 11/21/2018] [Indexed: 12/19/2022]
Abstract
AIM Inflammation is a driving force in development of atherosclerosis, and hyperglycemia is a significant risk factor for angiopathy. Siglec-9, expressed on human neutrophils and macrophages, engages specific glycan ligands on tissues to diminish ongoing inflammation. MATERIALS AND METHOD Siglec-9 ligands on human aorta were characterized and the effects of high glucose exposure on the expression of ligands for Siglec-9 on human umbilical vein endothelial cells (HUV-EC-C) in vitro and ligands for the comparable siglec (Siglec-E) on mouse aorta in vivo were studied. KEY FINDINGS Siglec-9 ligands were expressed broadly on human aorta, as well as on HUV-EC-C. Siglec-9 ligands on HUV-EC-C were sharply up-regulated under high glucose exposure in vitro, as were Siglec-E ligands on the aortas of hyperglycemic mice. Exposure of HUV-EC-C to high-glucose resulted in consistent inhibitory changes in co-cultured macrophages including increased apoptosis and decreased phagocytosis. Control of Siglec-9 ligand expression on HUV-EC-C was downstream of changes in an enzyme involved in their biosynthesis, UDP-galactose-4-epimerase (GALE) and increased cellular N-acetylgalactosamine. The alteration of GALE was associated with the regulatory microRNA hsa-let-7f. SIGNIFICANCE We conclude that exposure to high-glucose results in up-regulation of immune inhibitory Siglec-9 sialoglycan ligands on aorta and HUV-EC-C cells downstream of altered GALE and GalNAc expression, resulting in up-regulation of apoptosis and decrease of phagocytic activity of macrophages. Changes in Siglec-9 sialoglycan ligand expression on vascular endothelial cells may be a natural response to the initial steps of atherosclerosis and might be a potential target to regulate inflammation in diabetic angiopathy.
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Affiliation(s)
- Yingxian Zhang
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China; Department of Pharmacy, The Third Affiliated Hospital, ChongQing Medical University, Yubei, Chongqing 401120, China
| | - Yu Zheng
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China; Department of Pharmacy, Hainan Western Central Hospital, Danzhou, Hainan 571799, China
| | - Jin Li
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China
| | - Ling Nie
- Department of Nephrology, Xinqiao Hospital, Third Military Medical University, ChongQing 400037, China
| | - Yijie Hu
- Department of Cardiovascular Surgery, Research Institute of Surgery, Daping Hospital, Third Military Medical University, ChongQing 400042, China
| | - Fangjie Wang
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China
| | - Hongmei Liu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China
| | - Steve M Fernandes
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Qianjin Zhong
- Department of Cardiovascular Surgery, Research Institute of Surgery, Daping Hospital, Third Military Medical University, ChongQing 400042, China
| | - Xiaohui Li
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China.
| | - Ronald L Schnaar
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Yi Jia
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, ChongQing 400038, China.
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47
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Riehle C, Bauersachs J. Of mice and men: models and mechanisms of diabetic cardiomyopathy. Basic Res Cardiol 2018; 114:2. [PMID: 30443826 PMCID: PMC6244639 DOI: 10.1007/s00395-018-0711-0] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 11/09/2018] [Indexed: 02/07/2023]
Abstract
Diabetes mellitus increases the risk of heart failure independent of co-existing hypertension and coronary artery disease. Although several molecular mechanisms for the development of diabetic cardiomyopathy have been identified, they are incompletely understood. The pathomechanisms are multifactorial and as a consequence, no causative treatment exists at this time to modulate or reverse the molecular changes contributing to accelerated cardiac dysfunction in diabetic patients. Numerous animal models have been generated, which serve as powerful tools to study the impact of type 1 and type 2 diabetes on the heart. Despite specific limitations of the models generated, they mimic various perturbations observed in the diabetic myocardium and continue to provide important mechanistic insight into the pathogenesis underlying diabetic cardiomyopathy. This article reviews recent studies in both diabetic patients and in these animal models, and discusses novel hypotheses to delineate the increased incidence of heart failure in diabetic patients.
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Affiliation(s)
- Christian Riehle
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, 30625, Germany.
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, 30625, Germany
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48
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Oba S, Ayuzawa N, Nishimoto M, Kawarazaki W, Ueda K, Hirohama D, Kawakami-Mori F, Shimosawa T, Marumo T, Fujita T. Aberrant DNA methylation of Tgfb1 in diabetic kidney mesangial cells. Sci Rep 2018; 8:16338. [PMID: 30397232 PMCID: PMC6218490 DOI: 10.1038/s41598-018-34612-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 10/22/2018] [Indexed: 01/19/2023] Open
Abstract
Epigenetic modulation may underlie the progression of diabetic nephropathy (DN). Involvement of TGFB1 in mesangial fibrosis of DN led us to hypothesize that Tgfb1 DNA demethylation contributes to progression of DN. In primary mesangial cells from diabetic (db/db) mouse kidneys, demethylation of Tgfb1 DNA and upregulation of Tgfb1 mRNA progressed simultaneously. USF1 binding site in Tgfb1 promoter region were demethylated, and binding of USF1 increased, with decreased binding of DNMT1 in db/db compared with control. Given downregulation of Tgfb1 expression by folic acid, antioxidant Tempol reversed DNA demethylation, with increased and decreased recruitment of DNMT1 and USF1 to the promoter, resulting in decreased Tgfb1 expression in db/db mice. Addition of H2O2 to mesangial cells induced DNA demethylation and upregulated Tgfb1 expression. Finally, Tempol attenuated mesangial fibrosis in db/db mice. We conclude that aberrant DNA methylation of Tgfb1 due to ROS overproduction play a key to mesangial fibrosis during DN progression.
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Affiliation(s)
- Shigeyoshi Oba
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.
| | - Nobuhiro Ayuzawa
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Mitsuhiro Nishimoto
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Wakako Kawarazaki
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Kohei Ueda
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Daigoro Hirohama
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | | | - Tatsuo Shimosawa
- Department of Clinical Laboratory, International University of Health and Welfare, School of Medicine, Mita Hospital IUHW, Tokyo, Japan
| | - Takeshi Marumo
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Toshiro Fujita
- Division of Clinical Epigenetics, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.
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49
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van der Heijden CDCC, Noz MP, Joosten LAB, Netea MG, Riksen NP, Keating ST. Epigenetics and Trained Immunity. Antioxid Redox Signal 2018; 29:1023-1040. [PMID: 28978221 PMCID: PMC6121175 DOI: 10.1089/ars.2017.7310] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
SIGNIFICANCE A growing body of clinical and experimental evidence has challenged the traditional understanding that only the adaptive immune system can mount immunological memory. Recent findings describe the adaptive characteristics of the innate immune system, underscored by its ability to remember antecedent foreign encounters and respond in a nonspecific sensitized manner to reinfection. This has been termed trained innate immunity. Although beneficial in the context of recurrent infections, this might actually contribute to chronic immune-mediated diseases, such as atherosclerosis. Recent Advances: In line with its proposed role in sustaining cellular memories, epigenetic reprogramming has emerged as a critical determinant of trained immunity. Recent technological and computational advances that improve unbiased acquisition of epigenomic profiles have significantly enhanced our appreciation for the complexities of chromatin architecture in the contexts of diverse immunological challenges. CRITICAL ISSUES Key to resolving the distinct chromatin signatures of innate immune memory is a comprehensive understanding of the precise physiological targets of regulatory proteins that recognize, deposit, and remove chemical modifications from chromatin as well as other gene-regulating factors. Drawing from a rapidly expanding compendium of experimental and clinical studies, this review details a current perspective of the epigenetic pathways that support the adapted phenotypes of monocytes and macrophages. FUTURE DIRECTIONS We explore future strategies that are aimed at exploiting the mechanism of trained immunity to improve the prevention and treatment of infections and immune-mediated chronic disorders.
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Affiliation(s)
| | - Marlies P Noz
- 1 Department of Internal Medicine, Radboud University Medical Center , Nijmegen, The Netherlands
| | - Leo A B Joosten
- 1 Department of Internal Medicine, Radboud University Medical Center , Nijmegen, The Netherlands
| | - Mihai G Netea
- 1 Department of Internal Medicine, Radboud University Medical Center , Nijmegen, The Netherlands .,2 Department for Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn , Bonn, Germany
| | - Niels P Riksen
- 1 Department of Internal Medicine, Radboud University Medical Center , Nijmegen, The Netherlands
| | - Samuel T Keating
- 1 Department of Internal Medicine, Radboud University Medical Center , Nijmegen, The Netherlands
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50
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Epigenetic processing in cardiometabolic disease. Atherosclerosis 2018; 281:150-158. [PMID: 30290963 DOI: 10.1016/j.atherosclerosis.2018.09.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/24/2018] [Accepted: 09/20/2018] [Indexed: 02/07/2023]
Abstract
Albeit a consistent body of evidence supports the notion that genes influence cardiometabolic features and outcomes, the "non-genetic regulation" of this process is gaining increasing attention. Plastic chemical changes of DNA/histone complexes - known as epigenetic changes - critically determine gene activity by rapidly modifying chromatin accessibility to transcription factors. In this review, we describe the emerging role of chromatin modifications as fine tuners of gene transcription in adipogenesis, insulin resistance, macrophage polarization, immuno-metabolism, endothelial dysfunction and metabolic cardiomyopathy. Epigenetic processing participates in the dynamic interplay among different organs in the cardiometabolic patient. DNA methylation and post-translational histone modifications in both visceral and subcutaneous adipose tissue enable the transcription of genes implicated in lipo- and adipogenesis, inflammation and insulin resistance. Along the same line, complex networks of chromatin modifying enzymes are responsible for impaired nitric oxide bioavailability and defective insulin signalling in the vasculature, thus leading to reduced capillary recruitment and insulin delivery in the liver, skeletal muscle and adipose tissue. Furthermore, changes in methylation status of IL-4, IFNγ and Forkhead box P3 (Foxp3) gene loci are crucial for the polarization of immune cells, thus leading to adipose tissue inflammation and atherosclerosis. Cell-specific epigenetic information could advance our understanding of cardiometabolic processes, thus leading to individualized risk assessment and personalized therapeutic approaches in patients with cardiometabolic disturbances. The development of new chromatin modifying drugs indicates that targeting epigenetic changes is a promising approach to reduce the burden of cardiovascular disease in this setting.
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