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miR-320a targeting RGS5 aggravates atherosclerosis by promoting migration and proliferation of ox-LDL-stimulated vascular smooth muscle cells. J Cardiovasc Pharmacol 2022; 80:110-117. [PMID: 35522176 DOI: 10.1097/fjc.0000000000001286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 04/12/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT MicroRNAs (miRNAs) have been implicated in atherosclerosis (AS) progression. Here, we focused on how miR-320a affect AS progression via vascular smooth muscle cells (VSMCs). Oxidized low-density lipoproteins (ox-LDL)-stimulated VSMCs were used as an AS cell model and qRT-PCR was performed to measure miR-320a and RGS5 levels. CCK-8 and wound healing assays were used to detect the viability and migration of VSMCs. Western blotting was used to measure the protein expression levels of PCNA, Bax, and Bcl-2. The interaction of miR-320a and RGS5 was determined by dual-luciferase and RNA pull-down assays. MiR-320a was highly expressed while RGS5 showed low levels of expression in the arterial plaque tissues. Silencing of miR-320a blocked cell viability and migration, inhibited expression of the proliferation-specific protein PCNA in ox-LDL-treated VSMCs, promoted Bax protein expression and inhibited Bcl-2 protein expression. Furthermore, miR-320a was found to exert these effects by inhibiting RGS5 expression. Collectively, miR-320a promoted cell viability, migration, and proliferation while reducing apoptosis of ox-LDL-stimulated VSMCs by inhibiting RGS5.
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2
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Golbidi S, Edvinsson L, Laher I. Smoking and Endothelial Dysfunction. Curr Vasc Pharmacol 2020; 18:1-11. [PMID: 30210003 DOI: 10.2174/1573403x14666180913120015] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/12/2018] [Accepted: 09/12/2018] [Indexed: 02/07/2023]
Abstract
Cigarette smoking is one of the most important health concerns worldwide. Even though the rate of smoking is declining in developed countries, it is still experiencing growth in developing regions. Many studies have examined the relationship between smoking, as an established risk factor, and cardiovascular diseases. We provide an updated review of the underlying mechanisms of smokinginduced cardiovascular diseases, with a focus on the relationship between smoking and oxidative stress, particularly from the perspective of endothelial cell dysfunction. We review smoking-induced oxidative stress as a trigger for a generalized vascular inflammation associated with cytokine release, adhesion of inflammatory cells and, ultimately, disruption of endothelial integrity as a protective barrier layer. We also briefly discuss the harms related to the vaping of electronic cigarettes, which many erroneously consider as a safe alternative to smoking. We conclude that even though e-cigarette could be a helpful device during the transition period of cigarette quitting, it is by no means a safe substitute.
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Affiliation(s)
- Saeid Golbidi
- Department of Family Practice, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Lars Edvinsson
- Department of Medicine, Institute of Clinical Sciences, Lund University, Getingevägen, 22185 Lund, Sweden
| | - Ismail Laher
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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3
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Yetkin Yildirim G, Tola EN, Dağ I. A novel biochemical marker - OKL38- with its apoptotic and antioxidant properties for the development of PCOS and its related clinical implications. Gynecol Endocrinol 2020; 36:673-677. [PMID: 31996062 DOI: 10.1080/09513590.2020.1718641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Aim: To investigate the role of serum OKL38 levels in the development of polycystic ovary syndrome (PCOS) and clinical implications related to PCOS.Method: PCOS (n = 33) and ovulatory controls (n = 48) were recruited for the study. Anthropometric measurements were recorded, and blood samples for hormonal and biochemical parameters including serum OKL38 levels were obtained. The potential role of OKL38 on the development of PCOS, metabolic syndrome and cardiovascular disease (CVD) were investigated. Framingham risk score (FRS) was used for the determination of CVD risk.Results: Mean Ferriman-Gallway (FG) score, insulin, low-density lipoprotein (LDL), total cholesterol (TC) levels, and the homeostasis model assessment of insulin resistance index (HOMA-IR) were significantly increased (p < .05) in women with PCOS compared to controls. PCOS group had lower mean OKL38 level compared to controls (p < .0001) and OKL38 was negatively predictive for the diagnosis of PCOS after adjustment of variables that were significantly different between two groups. A negative association between OKL38 and metabolic syndrome in PCOS women was evident after adjustment for age, obesity, and abdominal obesity. OKL38 level was also negatively correlated with body mass index, waist-to-hip-ratio, fat composition, serum TC, LDL, free testosterone levels, FRS, and FG scores.Conclusion: OKL38 may have a partial role in the etiopathogenesis of PCOS and may protect development of metabolic syndrome and CVD in women with PCOS.
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Affiliation(s)
- Gonca Yetkin Yildirim
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Esra Nur Tola
- Department of Obstetrics and Gynecology, Istanbul Medipol University, Faculty of Medicine, Istanbul, Turkey
| | - Ismail Dağ
- Department of Biochemistry, Eyup State Hospital, Istanbul, Turkey
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4
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Shoeibi S. Diagnostic and theranostic microRNAs in the pathogenesis of atherosclerosis. Acta Physiol (Oxf) 2020; 228:e13353. [PMID: 31344321 DOI: 10.1111/apha.13353] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 12/12/2022]
Abstract
MicroRNAs (miRNAs) are a group of small single strand and noncoding RNAs that regulate several physiological and molecular signalling pathways. Alterations of miRNA expression profiles may be involved with pathophysiological processes underlying the development of atherosclerosis and cardiovascular diseases, including changes in the functions of the endothelial cells and vascular smooth muscle cells, such as cell proliferation, migration and inflammation, which are involved in angiogenesis, macrophage function and foam cell formation. Thus, miRNAs can be considered to have a crucial role in the progression, modulation and regulation of every stage of atherosclerosis. Such potential biomarkers will enable us to predict therapeutic response and prognosis of cardiovascular diseases and adopt effective preclinical and clinical treatment strategies. In the present review article, the current data regarding the role of miRNAs in atherosclerosis were summarized and the potential miRNAs as prognostic, diagnostic and theranostic biomarkers in preclinical and clinical studies were further discussed. The highlights of this review are expected to present opportunities for future research of clinical therapeutic approaches in vascular diseases resulting from atherosclerosis with an emphasis on miRNAs.
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Affiliation(s)
- Sara Shoeibi
- Atherosclerosis Research Center Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
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5
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da Costa RM, Rodrigues D, Pereira CA, Silva JF, Alves JV, Lobato NS, Tostes RC. Nrf2 as a Potential Mediator of Cardiovascular Risk in Metabolic Diseases. Front Pharmacol 2019; 10:382. [PMID: 31031630 PMCID: PMC6473049 DOI: 10.3389/fphar.2019.00382] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/26/2019] [Indexed: 12/30/2022] Open
Abstract
Free radicals act as secondary messengers, modulating a number of important biological processes, including gene expression, ion mobilization in transport systems, protein interactions and enzymatic functions, cell growth, cell cycle, redox homeostasis, among others. In the cardiovascular system, the physiological generation of free radicals ensures the integrity and function of cardiomyocytes, endothelial cells, and adjacent smooth muscle cells. In physiological conditions, there is a balance between free radicals generation and the activity of enzymatic and non-enzymatic antioxidant systems. Redox imbalance, caused by increased free radical's production and/or reduced antioxidant defense, plays an important role in the development of cardiovascular diseases, contributing to cardiac hypertrophy and heart failure, endothelial dysfunction, hypertrophy and hypercontractility of vascular smooth muscle. Excessive production of oxidizing agents in detriment of antioxidant defenses in the cardiovascular system has been described in obesity, diabetes mellitus, hypertension, and atherosclerosis. The transcription factor Nrf2 (nuclear factor erythroid 2-related factor 2), a major regulator of antioxidant and cellular protective genes, is primarily activated in response to oxidative stress. Under physiological conditions, Nrf2 is constitutively expressed in the cytoplasm of cells and is usually associated with Keap-1, a repressor protein. This association maintains low levels of free Nrf2. Stressors, such as free radicals, favor the translocation of Nrf2 to the cell nucleus. The accumulation of nuclear Nrf2 allows the binding of this protein to the antioxidant response element of genes that code antioxidant proteins. Although little information on the role of Nrf2 in the cardiovascular system is available, growing evidence indicates that decreased Nrf2 activity contributes to oxidative stress, favoring the pathophysiology of cardiovascular disorders found in obesity, diabetes mellitus, and atherosclerosis. The present mini-review will provide a comprehensive overview of the role of Nrf2 as a contributing factor to cardiovascular risk in metabolic diseases.
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Affiliation(s)
- Rafael M da Costa
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Special Academic Unit of Health Sciences, Federal University of Goiás, Jataí, Brazil
| | - Daniel Rodrigues
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Camila A Pereira
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Josiane F Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Juliano V Alves
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Núbia S Lobato
- Special Academic Unit of Health Sciences, Federal University of Goiás, Jataí, Brazil
| | - Rita C Tostes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
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6
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Hypertension exaggerates renovascular resistance via miR-122-associated stress response in aging. J Hypertens 2018; 36:2226-2236. [DOI: 10.1097/hjh.0000000000001770] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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7
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Kuosmanen SM, Kansanen E, Kaikkonen MU, Sihvola V, Pulkkinen K, Jyrkkänen HK, Tuoresmäki P, Hartikainen J, Hippeläinen M, Kokki H, Tavi P, Heikkinen S, Levonen AL. NRF2 regulates endothelial glycolysis and proliferation with miR-93 and mediates the effects of oxidized phospholipids on endothelial activation. Nucleic Acids Res 2018; 46:1124-1138. [PMID: 29161413 PMCID: PMC5815049 DOI: 10.1093/nar/gkx1155] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/12/2017] [Accepted: 11/01/2017] [Indexed: 01/02/2023] Open
Abstract
Phospholipids, such as 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (PAPC), are the major components of cell membranes. Their exposure to reactive oxygen species creates oxidized phospholipids, which predispose to the development of chronic inflammatory diseases and metabolic disorders through endothelial activation and dysfunction. Although the effects of oxidized PAPC (oxPAPC) on endothelial cells have been previously studied, the underlying molecular mechanisms evoking biological responses remain largely unknown. Here, we investigated the molecular mechanisms of oxPAPC function with a special emphasis on NRF2-regulated microRNAs (miRNAs) in human umbilical vein endothelial cells (HUVECs) utilizing miRNA profiling, global run-on sequencing (GRO-seq), genome-wide NRF2 binding model, and RNA sequencing (RNA-seq) with miRNA overexpression and silencing. We report that the central regulators of endothelial activity, KLF2 for quiescence, PFKFB3 for glycolysis, and VEGFA, FOXO1 and MYC for growth and proliferation, are regulated by transcription factor NRF2 and the NRF2-regulated miR-106b∼25 cluster member, miR-93, in HUVECs. Mechanistically, oxPAPC was found to induce glycolysis and proliferation NRF2-dependently, and oxPAPC-dependent induction of the miR-106b∼25 cluster was mediated by NRF2. Additionally, several regulatory loops were established between NRF2, miR-93 and the essential regulators of healthy endothelium, collectively implying that NRF2 controls the switch between the quiescent and the proliferative endothelial states together with miR-93.
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Affiliation(s)
- Suvi M Kuosmanen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Emilia Kansanen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Minna U Kaikkonen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Virve Sihvola
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Kati Pulkkinen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Henna-Kaisa Jyrkkänen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Pauli Tuoresmäki
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - Juha Hartikainen
- School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
- Heart Centre, Kuopio University Hospital, 70211 Kuopio, Finland
| | | | - Hannu Kokki
- School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
- Anaesthesia and Operative Services, 70211 Kuopio University Hospital, Kuopio, Finland
| | - Pasi Tavi
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Sami Heikkinen
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - Anna-Liisa Levonen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
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8
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Flowers E, Kanaya AM, Fukuoka Y, Allen IE, Cooper B, Aouizerat BE. Preliminary evidence supports circulating microRNAs as prognostic biomarkers for type 2 diabetes. Obes Sci Pract 2017; 3:446-452. [PMID: 29259803 PMCID: PMC5729496 DOI: 10.1002/osp4.134] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/01/2017] [Accepted: 09/08/2017] [Indexed: 12/22/2022] Open
Abstract
Background Circulating microRNAs are emerging as potential prognostic biomarkers for the development of type 2 diabetes. However, microRNAs are also associated with complications from impaired glucose metabolism (e.g. endothelial cell function). Prior studies have not evaluated for associations between trajectories of circulating microRNAs with trajectories of fasting blood glucose over time and the responses to behavioral interventions to reduce risk. This study performed longitudinal assessment of microRNAs and fasting blood glucose and identified relationships between microRNAs and behavioral risk reduction interventions. Methods MicroRNAs (n = 353) were measured in subsets (n = 10, n = 8) of participants from previously completed clinical trials that studied behavioral risk reduction interventions. Fasting blood glucose trajectories were associated with changes in 45 microRNAs over 12 months. Results Following a 3‐month physical activity and dietary intervention compared with baseline, 13 microRNAs were differentially expressed. Seven microRNAs (i.e. miR‐106b, miR‐20b, miR‐363, miR‐486, miR‐532, miR‐92a and miR‐93) were commonly identified between the two analyses. Conclusions Further studies are needed to determine which microRNAs are prognostic biomarkers of risk for type 2 diabetes versus consequences of impaired glucose metabolism. Additional future directions of this research are to differentiate whether microRNAs are prognostic and/or diagnostic biomarkers for risk for type 2 diabetes and predictive biomarkers of responses to risk reduction interventions.
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Affiliation(s)
- E. Flowers
- Department of Physiological NursingUniversity of CaliforniaSan FranciscoCAUSA
- Institute for Human GeneticsUniversity of CaliforniaSan FranciscoCAUSA
| | - A. M. Kanaya
- Department of MedicineUniversity of CaliforniaSan FranciscoCAUSA
- Department of Epidemiology and BiostatisticsUniversity of CaliforniaSan FranciscoCAUSA
| | - Y. Fukuoka
- Department of Physiological NursingUniversity of CaliforniaSan FranciscoCAUSA
| | - I. E. Allen
- Department of Epidemiology and BiostatisticsUniversity of CaliforniaSan FranciscoCAUSA
| | - B. Cooper
- University of CaliforniaSan FranciscoCAUSA
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9
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Bochkov V, Gesslbauer B, Mauerhofer C, Philippova M, Erne P, Oskolkova OV. Pleiotropic effects of oxidized phospholipids. Free Radic Biol Med 2017; 111:6-24. [PMID: 28027924 DOI: 10.1016/j.freeradbiomed.2016.12.034] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/21/2016] [Accepted: 12/22/2016] [Indexed: 12/25/2022]
Abstract
Oxidized phospholipids (OxPLs) are increasingly recognized to play a role in a variety of normal and pathological states. OxPLs were implicated in regulation of inflammation, thrombosis, angiogenesis, endothelial barrier function, immune tolerance and other important processes. Rapidly accumulating evidence suggests that OxPLs are biomarkers of atherosclerosis and other pathologies. In addition, successful application of experimental drugs based on structural scaffold of OxPLs in animal models of inflammation was recently reported. This review briefly summarizes current knowledge on generation, methods of quantification and biological activities of OxPLs. Furthermore, receptor and cellular mechanisms of these effects are discussed. The goal of the review is to give a broad overview of this class of lipid mediators inducing pleiotropic biological effects.
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Affiliation(s)
- Valery Bochkov
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Austria.
| | - Bernd Gesslbauer
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Austria
| | - Christina Mauerhofer
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Austria
| | - Maria Philippova
- Signaling Laboratory, Department of Biomedicine, Basel University Hospital, Basel, Switzerland
| | - Paul Erne
- Signaling Laboratory, Department of Biomedicine, Basel University Hospital, Basel, Switzerland
| | - Olga V Oskolkova
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Austria.
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10
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Iskandar AR, Mathis C, Schlage WK, Frentzel S, Leroy P, Xiang Y, Sewer A, Majeed S, Ortega-Torres L, Johne S, Guedj E, Trivedi K, Kratzer G, Merg C, Elamin A, Martin F, Ivanov NV, Peitsch MC, Hoeng J. A systems toxicology approach for comparative assessment: Biological impact of an aerosol from a candidate modified-risk tobacco product and cigarette smoke on human organotypic bronchial epithelial cultures. Toxicol In Vitro 2017; 39:29-51. [PMID: 27865774 DOI: 10.1016/j.tiv.2016.11.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/11/2016] [Indexed: 11/24/2022]
Abstract
This study reports a comparative assessment of the biological impact of a heated tobacco aerosol from the tobacco heating system (THS) 2.2 and smoke from a combustible 3R4F cigarette. Human organotypic bronchial epithelial cultures were exposed to an aerosol from THS2.2 (a candidate modified-risk tobacco product) or 3R4F smoke at similar nicotine concentrations. A systems toxicology approach was applied to enable a comprehensive exposure impact assessment. Culture histology, cytotoxicity, secreted pro-inflammatory mediators, ciliary beating, and genome-wide mRNA/miRNA profiles were assessed at various time points post-exposure. Series of experimental repetitions were conducted to increase the robustness of the assessment. At similar nicotine concentrations, THS2.2 aerosol elicited lower cytotoxicity compared with 3R4F smoke. No morphological change was observed following exposure to THS2.2 aerosol, even at nicotine concentration three times that of 3R4F smoke. Lower levels of secreted mediators and fewer miRNA alterations were observed following exposure to THS2.2 aerosol than following 3R4F smoke. Based on the computational analysis of the gene expression changes, 3R4F (0.13 mg nicotine/L) elicited the highest biological impact (100%) in the context of Cell Fate, Cell Proliferation, Cell Stress, and Inflammatory Network Models at 4 h post-exposure. Whereas, the corresponding impact of THS2.2 (0.14 mg nicotine/L) was 7.6%.
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Affiliation(s)
- Anita R Iskandar
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Carole Mathis
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Walter K Schlage
- Biology Consultant, Max-Baermann-Str. 21, 51429, Bergisch Gladbach, Germany.
| | - Stefan Frentzel
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Patrice Leroy
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Yang Xiang
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Alain Sewer
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Shoaib Majeed
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Laura Ortega-Torres
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Stephanie Johne
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Emmanuel Guedj
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Keyur Trivedi
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Gilles Kratzer
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Celine Merg
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Ashraf Elamin
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Florian Martin
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Nikolai V Ivanov
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Manuel C Peitsch
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Julia Hoeng
- Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
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Bolisetty S, Zarjou A, Agarwal A. Heme Oxygenase 1 as a Therapeutic Target in Acute Kidney Injury. Am J Kidney Dis 2017; 69:531-545. [PMID: 28139396 DOI: 10.1053/j.ajkd.2016.10.037] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 10/22/2016] [Indexed: 01/06/2023]
Abstract
A common clinical condition, acute kidney injury (AKI) significantly influences morbidity and mortality, particularly in critically ill patients. The pathophysiology of AKI is complex and involves multiple pathways, including inflammation, autophagy, cell-cycle progression, and oxidative stress. Recent evidence suggests that a single insult to the kidney significantly enhances the propensity to develop chronic kidney disease. Therefore, the generation of effective therapies against AKI is timely. In this context, the cytoprotective effects of heme oxygenase 1 (HO-1) in animal models of AKI are well documented. HO-1 modulates oxidative stress, autophagy, and inflammation and regulates the progression of cell cycle via direct and indirect mechanisms. These beneficial effects of HO-1 induction during AKI are mediated in part by the by-products of the HO reaction (iron, carbon monoxide, and bile pigments). This review highlights recent advances in the molecular mechanisms of HO-1-mediated cytoprotection and discusses the translational potential of HO-1 induction in AKI.
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Affiliation(s)
- Subhashini Bolisetty
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL; Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham, AL; Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL
| | - Abolfazl Zarjou
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL; Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham, AL
| | - Anupam Agarwal
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL; Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham, AL; Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL; Birmingham Veterans Administration Medical Center, Birmingham, AL.
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12
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Lu SC, Mato JM, Espinosa-Diez C, Lamas S. MicroRNA-mediated regulation of glutathione and methionine metabolism and its relevance for liver disease. Free Radic Biol Med 2016; 100:66-72. [PMID: 27033954 PMCID: PMC5749629 DOI: 10.1016/j.freeradbiomed.2016.03.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 03/18/2016] [Accepted: 03/21/2016] [Indexed: 12/31/2022]
Abstract
The discovery of the microRNA (miRNA) family of small RNAs as fundamental regulators of post-transcriptional gene expression has fostered research on their importance in every area of biology and clinical medicine. In the particular area of liver metabolism and disease, miRNAs are gaining increasing importance. By focusing on two fundamental hepatic biosynthetic pathways, glutathione and methionine, we review recent advances on the comprehension of the role of miRNAs in liver pathophysiology and more specifically of models of hepatic cholestasis/fibrosis and hepatocellular carcinoma.
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Affiliation(s)
- Shelly C Lu
- Division of Gastroenterology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - José M Mato
- CIC bioGUNE, (CIBERehd), Parque Tecnológico de Bizcaia, Derio, Spain
| | - Cristina Espinosa-Diez
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239, USA
| | - Santiago Lamas
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Nicolás Cabrera 1, 28049 Madrid, Spain.
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13
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Chen X, Yang M, Hao W, Han J, Ma J, Wang C, Sun S, Zheng Q. Differentiation-inducing and anti-proliferative activities of isoliquiritigenin and all-trans-retinoic acid on B16F0 melanoma cells: Mechanisms profiling by RNA-seq. Gene 2016; 592:86-98. [PMID: 27461947 DOI: 10.1016/j.gene.2016.07.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 07/14/2016] [Accepted: 07/22/2016] [Indexed: 12/11/2022]
Abstract
Melanoma is a cancer that arises from melanocytes, specialized pigmented cells that are found predominantly in the skin. The incidence of malignant melanoma has significantly increased over the last decade. With the development of therapy, the survival rate of some kind of cancer has been improved greatly. But the treatment of melanoma remains unsatisfactory. Much of melanoma's resistance to traditional chemotherapy is believed to arise intrinsically, by virtue of potent growth and cell survival-promoting genetic alteration. Therefore, significant attention has recently been focused on differentiation therapy, as well as differentiation inducer compounds. In previous study, we found isoliquiritigenin (ISL), a natural product extracted from licorice, could induce B16F0 melanoma cell differentiation. Here we investigated the transcriptional response of melanoma differentiation process induced by ISL and all-trans-retinoic acid (RA). Results showed that 390 genes involves in 201 biochemical pathways were differentially expressed in ISL treatment and 304 genes in 193 pathways in RA treatment. Differential expressed genes (DGEs, fold-change (FC)≥10) with the function of anti-proliferative and differentiation inducing indicated a loss of grade malignancy characteristic. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated glutathione metabolism, glycolysis/gluconeogenesis and pentose phosphate pathway were the top three relative pathway perturbed by ISL, and mitogen-activated protein kinase (MAPK) signaling pathway was the most important pathway in RA treatment. In the analysis of hierarchical clustering of DEGs, we discovered 72 DEGs involved in the process of drug action. We thought Cited1, Tgm2, Xaf1, Cd59a, Fbxo2, Adh7 may have critical role in the differentiation of melanoma. The evidence displayed herein confirms the critical role of reactive oxygen species (ROS) in melanoma pathobiology and provides evidence for future targets in the development of next-generation biomarkers and therapeutics.
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Affiliation(s)
- Xiaoyu Chen
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ming Yang
- BGI-Tech, BGI-Shenzhen, Shenzhen, Guangdong 518083, China
| | - Wenjin Hao
- Binzhou Medical University, Yantai, Shandong 264003, China
| | - Jichun Han
- Binzhou Medical University, Yantai, Shandong 264003, China
| | - Jun Ma
- Binzhou Medical University, Yantai, Shandong 264003, China
| | - Caixia Wang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Shiguo Sun
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Qiusheng Zheng
- Binzhou Medical University, Yantai, Shandong 264003, China.
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miR-320a affects spinal cord edema through negatively regulating aquaporin-1 of blood-spinal cord barrier during bimodal stage after ischemia reperfusion injury in rats. BMC Neurosci 2016; 17:10. [PMID: 26850728 PMCID: PMC4744445 DOI: 10.1186/s12868-016-0243-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 01/25/2016] [Indexed: 01/19/2023] Open
Abstract
Background Spinal cord edema is a serious complication and pathophysiological change after ischemia reperfusion (IR) injury. It has been demonstrated closely associated with bimodal disruption of blood–spinal cord barrier (BSCB) in our previous work. Aquaporin (AQP)1 plays important but contradictory roles in water homeostasis. Recently, microRNAs (miRs) effectively regulate numerous target mRNAs during ischemia. However, whether miRs are able to protect against dimodal disruption of BSCB by regulating perivascular AQP1 remains to be elucidated.
Results Spinal water content and EB extravasation were suggested as a bimodal distribution in directly proportion to AQP1, since all maximal changes were detected at 12 and 48 h after reperfusion. Further TEM and double immunofluorescence showed that former disruption of BSCB at 12 h was attributed to cytotoxic edema by up-regulated AQP1 expressions in astrocytes, whereas the latter at 48 h was mixed with vasogenic edema with both endothelial cells and astrocytes involvement. Microarray analysis revealed that at 12 h post-injury, ten miRs were upregulated (>2.0 fold) and seven miRs were downregulated (<0.5 fold) and at 48 h, ten miRs were upregulated and eleven were downregulated compared to Sham-operated controls. Genomic screening and luciferase assays identified that miR-320a was a potential modulator of AQP1 in spinal cord after IR in vitro. In vivo, compared to rats in IR and negative control group, intrathecal infusion of miR-320a mimic attenuated IR-induced lower limb motor function deficits and BSCB dysfunction as decreased EB extravasation and spinal water content through down-regulating AQP1 expressions, whereas pretreated with miR-320a AMO reversed above effects.
Conclusion These findings indicate miR-320a directly and functionally affects spinal cord edema through negatively regulating AQP1 of BSCB after IR.
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Flowers E, Gadgil M, Aouizerat BE, Kanaya AM. Circulating micrornas associated with glycemic impairment and progression in Asian Indians. Biomark Res 2015; 3:22. [PMID: 26966540 PMCID: PMC4785747 DOI: 10.1186/s40364-015-0047-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 08/02/2015] [Indexed: 12/13/2022] Open
Abstract
AIMS/HYPOTHESIS Asian Indians have a high incidence of type 2 diabetes, but factors associated with glycemic progression in this population are not understood. MicroRNAs are emerging as important mediators of glucose homeostasis and have not been previously studied in Asian Indians. We examined microRNA (miR) expression associated with glycemic impairment and progression in Asian Indians from the San Francisco Bay Area. We studied 128 Asian Indians age 45-84 years without known cardiovascular disease and not taking diabetes medications. Oral glucose tolerance tests were performed at baseline and after 2.5 years. We quantified circulating miRs from plasma collected during the enrollment visit using a flow cytometry-based assay. RESULTS Glycemic impairment was present in 57 % (n = 73) at baseline. MiR-191 was positively associated with glycemic impairment (odds ratio (OR) 1.7 (95 % CI 1.2, 2.4), p < 0.01). The prevalence of glycemic progression after 2.5 years was 24 % (n = 23). Six miRs were negatively associated with glycemic progression: miR-122 (OR 0.5 (0.2, 0.8), p < 0.01), miR-15a (OR 0.6 (0.4, 0.9), p < 0.01), miR-197 (OR 0.6 (0.4, 0.9), p < 0.01), miR-320a (OR 0.6 (0.4, 0.9), p < 0.01), miR-423 (OR 0.6 (0.4, 0.9), p < 0.01), and miR-486 (OR 0.5 (0.3, 0.8), p < 0.01). Further multivariate adjustment did not attenuate these results. CONCLUSIONS/INTERPRETATION This is the first study to investigate circulating miRs associated with glycemic status among this high-risk ethnic group. Individual miRs were significantly associated with both glycemic impairment and glycemic progression. Further studies are needed to determine whether miR (s) might be useful clinical biomarkers for incident T2D in the Asian Indian population.
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Affiliation(s)
- Elena Flowers
- Department of Physiological Nursing, School of Nursing, University of California, 2 Koret Way #N605L, CA 94143 San Francisco, USA
| | - Meghana Gadgil
- Division of General Internal Medicine, University of California, San Francisco, USA
| | - Bradley E Aouizerat
- Department of Physiological Nursing, School of Nursing, University of California, 2 Koret Way #N605L, CA 94143 San Francisco, USA ; Institute for Human Genetics, University of California, San Francisco, USA
| | - Alka M Kanaya
- Division of General Internal Medicine, University of California, San Francisco, USA ; Department of Epidemiology and Biostatistics, University of California, San Francisco, USA
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Abstract
The nuclear factor erythroid 2-related factor 2 (NRF2) transcription factor is a key player in the cellular antioxidant response and it also controls various other functions in a cell-type specific manner. Due to these key functions, a tight control of NRF2 expression and activity is essential. This regulation is exerted at multiple levels, including transcriptional regulation and proteasomal degradation. Recent studies revealed important roles of miRNAs (miRs) in the control of NRF2 activity through direct targeting of the NRF2 mRNA and of mRNAs encoding proteins that control the level and activity of NRF2. In addition, NRF2 itself has been identified as a regulator of miRs, which exert some of the functions of NRF2 in metabolic regulation and also novel functions in the regulation of cell adhesion. Here, we summarize the roles and mechanisms of action of miRs in the regulation of NRF2 activity and as downstream effectors of this transcription factor.
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