1
|
Koklesova L, Mazurakova A, Samec M, Biringer K, Samuel SM, Büsselberg D, Kubatka P, Golubnitschaja O. Homocysteine metabolism as the target for predictive medical approach, disease prevention, prognosis, and treatments tailored to the person. EPMA J 2021; 12:477-505. [PMID: 34786033 PMCID: PMC8581606 DOI: 10.1007/s13167-021-00263-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 10/29/2021] [Indexed: 02/07/2023]
Abstract
Homocysteine (Hcy) metabolism is crucial for regulating methionine availability, protein homeostasis, and DNA-methylation presenting, therefore, key pathways in post-genomic and epigenetic regulation mechanisms. Consequently, impaired Hcy metabolism leading to elevated concentrations of Hcy in the blood plasma (hyperhomocysteinemia) is linked to the overproduction of free radicals, induced oxidative stress, mitochondrial impairments, systemic inflammation and increased risks of eye disorders, coronary artery diseases, atherosclerosis, myocardial infarction, ischemic stroke, thrombotic events, cancer development and progression, osteoporosis, neurodegenerative disorders, pregnancy complications, delayed healing processes, and poor COVID-19 outcomes, among others. This review focuses on the homocysteine metabolism impairments relevant for various pathological conditions. Innovative strategies in the framework of 3P medicine consider Hcy metabolic pathways as the specific target for in vitro diagnostics, predictive medical approaches, cost-effective preventive measures, and optimized treatments tailored to the individualized patient profiles in primary, secondary, and tertiary care.
Collapse
Affiliation(s)
- Lenka Koklesova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Alena Mazurakova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Marek Samec
- Jessenius Faculty of Medicine in Martin, Biomedical Centre Martin, Comenius University in Bratislava, Mala Hora 4D, 036 01 Martin, Slovakia
| | - Kamil Biringer
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Samson Mathews Samuel
- Department of Physiology and Biophysics, Weill Cornell Medicine in Qatar, Education City, Qatar Foundation, 24144 Doha, Qatar
| | - Dietrich Büsselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine in Qatar, Education City, Qatar Foundation, 24144 Doha, Qatar
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Olga Golubnitschaja
- Predictive, Preventive, Personalised (3P) Medicine, Department of Radiation Oncology, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, 53127 Bonn, Germany
| |
Collapse
|
2
|
Cachope R, Pereda AE. Regulatory Roles of Metabotropic Glutamate Receptors on Synaptic Communication Mediated by Gap Junctions. Neuroscience 2020; 456:85-94. [PMID: 32619474 DOI: 10.1016/j.neuroscience.2020.06.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 12/18/2022]
Abstract
Variations of synaptic strength are thought to underlie forms of learning and can functionally reshape neural circuits. Metabotropic glutamate receptors play key roles in regulating the strength of chemical synapses. However, information within neural circuits is also conveyed via a second modality of transmission: gap junction-mediated synapses. We review here evidence indicating that metabotropic glutamate receptors also play important roles in the regulation of synaptic communication mediated by neuronal gap junctions, also known as 'electrical synapses'. Activity-driven interactions between metabotropic glutamate receptors and neuronal gap junctions can lead to long-term changes in the strength of electrical synapses. Further, the regulatory action of metabotropic glutamate receptors on neuronal gap junctions is not restricted to adulthood but is also of critical relevance during brain development and contributes to the pathological mechanisms that follow brain injury.
Collapse
Affiliation(s)
- Roger Cachope
- CHDI Foundation, USA; Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Alberto E Pereda
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA.
| |
Collapse
|
3
|
Wang XJ, Tian DC, Wang FW, Zhang MH, Fan CD, Chen W, Wang MH, Fu XY, Ma JK. Astaxanthin inhibits homocysteine‑induced endothelial cell dysfunction via the regulation of the reactive oxygen species‑dependent VEGF‑VEGFR2‑FAK signaling pathway. Mol Med Rep 2019; 19:4753-4760. [PMID: 31059085 PMCID: PMC6522805 DOI: 10.3892/mmr.2019.10162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 04/10/2019] [Indexed: 12/11/2022] Open
Abstract
Increased plasma levels of homocysteine (Hcy) can cause severe damage to vascular endothelial cells. Hcy‑induced endothelial cell dysfunction contributes to the occurrence and development of human cerebrovascular diseases (CVDs). Our previous studies have revealed that astaxanthin (ATX) exhibits novel cardioprotective activity against Hcy‑induced cardiotoxicity in vitro and in vivo. However, the protective effect and mechanism of ATX against Hcy‑induced endothelial cell dysfunction requires further investigation. In the present study, treatment of human umbilical vascular endothelial cells (HUVECs) with Hcy inhibited the migration, invasive and tube formation potentials of these cells in a dose‑dependent manner. Hcy treatment further induced a time‑dependent increase in the production of reactive oxygen species (ROS), and downregulated the expression of vascular endothelial growth factor (VEGF), phosphorylated (p)‑Tyr‑VEGF receptor 2 (VEGFR2) and p‑Tyr397‑focal adhesion kinase (FAK). On the contrary, ATX pre‑treatment significantly inhibited Hcy‑induced cytotoxicity and increased HUVEC migration, invasion and tube formation following Hcy treatment. The mechanism of action may involve the effective inhibition of Hcy‑induced ROS generation and the recovery of FAK phosphorylation. Collectively, our findings suggested that ATX could inhibit Hcy‑induced endothelial dysfunction by suppressing Hcy‑induced activation of the VEGF‑VEGFR2‑FAK signaling axis, which indicates the novel therapeutic potential of ATX in treating Hcy‑mediated CVD.
Collapse
Affiliation(s)
- Xian-Jun Wang
- Department of Neurology, People's Hospital of Linyi Affiliated to Qingdao University, Linyi, Shandong 276000, P.R. China
| | - Da-Chen Tian
- Department of Neurology, People's Hospital of Linyi Affiliated to Qingdao University, Linyi, Shandong 276000, P.R. China
| | - Feng-Wen Wang
- Department of Biochemistry, Basic Medical School, Taishan Medical University, Taian, Shandong 271000, P.R. China
| | - Meng-Hao Zhang
- Department of Biochemistry, Basic Medical School, Taishan Medical University, Taian, Shandong 271000, P.R. China
| | - Cun-Dong Fan
- Department of Biochemistry, Basic Medical School, Taishan Medical University, Taian, Shandong 271000, P.R. China
| | - Wang Chen
- Department of Neurology, People's Hospital of Linyi Affiliated to Qingdao University, Linyi, Shandong 276000, P.R. China
| | - Mei-Hong Wang
- Department of Neurology, People's Hospital of Linyi Affiliated to Qingdao University, Linyi, Shandong 276000, P.R. China
| | - Xiao-Yan Fu
- Department of Biochemistry, Basic Medical School, Taishan Medical University, Taian, Shandong 271000, P.R. China
| | - Jin-Kui Ma
- Department of Food Science and Technology, School of Food and Pharmaceutical Engineering, Zhaoqing University, Zhaoqing, Guangdong 526061, P.R. China
| |
Collapse
|
4
|
Chen CH, Mayo JN, Gourdie RG, Johnstone SR, Isakson BE, Bearden SE. The connexin 43/ZO-1 complex regulates cerebral endothelial F-actin architecture and migration. Am J Physiol Cell Physiol 2015; 309:C600-7. [PMID: 26289751 DOI: 10.1152/ajpcell.00155.2015] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 08/12/2015] [Indexed: 12/17/2022]
Abstract
Endothelial cell migration is a fundamental process during angiogenesis and, therefore, a point of intervention for therapeutic strategies aimed at controlling pathologies involving blood vessel growth. We sought to determine the role of the gap junction protein connexin 43 (Cx43) in key features of angiogenesis in the central nervous system. We used an in vitro model to test the hypothesis that a complex of interacting proteins, including Cx43 and zonula occludens-1 (ZO-1), regulates the migratory behavior of cerebral endothelium. With knockdown and overexpression experiments, we demonstrate that the rate of healing following scrape-wounding of endothelium is regulated by the level of Cx43 protein expression. The effects on cell motility and proliferation were independent of gap junction communication as cells were sensitive to altered Cx43 expression in single plated cells. Coupling of Cx43/ZO-1 critically regulates this process as demonstrated with the use of a Cx43 α-carboxy terminus 1 peptide mimetic (αCT1) and overexpression of a mutant ZO-1 with the Cx43-binding PDZ2 domain deleted. Disrupting the Cx43/ZO-1 complex with these treatments resulted in collapse of the organized F-actin cytoskeleton and the appearance of actin nodes. Preincubation with the myosin 2 inhibitors blebbistatin or Y-27632 disrupted the Cx43/ZO-1 complex and inhibited cell spreading at the leading edge of migration. Cells studied individually in time-lapse open field locomotion assays wandered less when Cx43/ZO-1 interaction was disrupted without significant change in speed, suggesting that faster wound healing is a product of linearized migration. In contrast to the breakdown of F-actin architecture, microtubule architecture was not obviously affected by treatments. This study provides new insight into the fundamental regulatory mechanisms of cerebral endothelial cell locomotion. Cx43 tethers the F-actin cytoskeleton through a ZO-1 linker and supports cell spreading and exploration during locomotion. Here, we demonstrate that releasing this actin-coupled tether shifts the balance of directional migration control to a more linear movement that enhances the rate of wound healing.
Collapse
Affiliation(s)
- Cheng-Hung Chen
- Department of Biological Sciences, Idaho State University, Pocatello, Idaho
| | - Jamie N Mayo
- Department of Biological Sciences, Idaho State University, Pocatello, Idaho
| | - Robert G Gourdie
- Virginia Polytechnic and State University Carilion Research Institute, Roanoke, Virginia
| | - Scott R Johnstone
- BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, United Kingdom; and
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia
| | - Shawn E Bearden
- Department of Biological Sciences, Idaho State University, Pocatello, Idaho;
| |
Collapse
|
5
|
Mayo JN, Chen CH, Liao FF, Bearden SE. Homocysteine disrupts outgrowth of microvascular endothelium by an iNOS-dependent mechanism. Microcirculation 2015; 21:541-50. [PMID: 24655004 DOI: 10.1111/micc.12133] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 03/17/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To test the hypothesis that Hcy impairs angiogenic outgrowth through an iNOS-dependent mechanism. METHODS Adult C57Bl/6 mouse choroid explants were used in angiogenic outgrowth assays. Mouse microvascular endothelial cells were studied in culture during scrape-induced migration and dispersed cell locomotion experiments. Activity of iNOS was manipulated with pharmacology (1400 W), siRNA, and by use of choroid explants from iNOS knockout mice (iNOS(-/-)). RESULTS Hcy (20 μM) significantly decreased the area of endothelial outgrowth without altering the number of cells in the choroid explant angiogenic assay, resulting in more densely packed outgrowth. Hcy prevented the outward orientation of actin filaments and decreased the number of actin projections along the leading edge of outgrowth. Hcy also slowed outgrowth from the edge of a scraped endothelial monolayer and in cultures of dispersed cells, Hcy impaired cell locomotion without affecting proliferation. Inhibition of iNOS activity rescued the effect of Hcy on area of explant outgrowth, cell density, number of projections, cell locomotion, and rate of outgrowth following scraping. CONCLUSIONS Hcy impairs microvascular endothelial outgrowth, but not proliferation, by disrupting cell locomotion through an iNOS-dependent mechanism.
Collapse
Affiliation(s)
- Jamie N Mayo
- Department of Biological Sciences, Idaho State University, Pocatello, Idaho, USA
| | | | | | | |
Collapse
|
6
|
Lin YJ, Chang JS, Liu X, Tsang H, Lin TH, Liao CC, Huang SM, Chien WK, Chen JH, Wu JY, Chen CH, Chang LC, Lin CW, Ho TJ, Tsai FJ. Genetic variants of glutamate receptor gene family in Taiwanese Kawasaki disease children with coronary artery aneurysms. Cell Biosci 2014; 4:67. [PMID: 25485088 PMCID: PMC4258047 DOI: 10.1186/2045-3701-4-67] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 10/20/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Patients with Kawasaki disease (KD), a pediatric systemic vasculitis, may develop coronary artery aneurysm (CAA) as a complication. To investigate the role of glutamate receptors in KD and its CAA development, we performed genetic association studies. METHODS AND RESULTS We examined the whole family of glutamate receptors by genetic association studies in a Taiwanese cohort of 262 KD patients. We identified glutamate receptor ionotropic, kainate 1 (GRIK1) as a novel susceptibility locus associated with CAA formation in KD. Statistically significant differences were noted for factors like fever duration, 1st Intravenous immunoglobulin (IVIG) used time (number of days after the first day of fever) and the GRIK1 (rs466013, rs425507, and rs38700) genetic variants. This significant association persisted even after using multivariate regression analysis (Full model: for rs466013: odds ratio =2.12; 95% CI =1.22-3.65; for rs425507: odds ratio =2.16; 95% CI =1.26-3.76; for rs388700: odds ratio =2.16; 95% CI =1.26-3.76). CONCLUSIONS We demonstrated that GRIK1 polymorphisms are associated CAA formation in KD, even when adjusted for fever duration and IVIG used time, and may also serve as a genetic marker for the CAA formation in KD.
Collapse
Affiliation(s)
- Ying-Ju Lin
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan ; School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Jeng-Sheng Chang
- Department of Pediatrics, China Medical University Hospital, Taichung, Taiwan
| | - Xiang Liu
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland USA
| | - Hsinyi Tsang
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland USA
| | - Ting-Hsu Lin
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chiu-Chu Liao
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Shao-Mei Huang
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Wen-Kuei Chien
- Biostatistics Center, China Medical University, Taichung, Taiwan ; Biostatistics Center and School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Jin-Hua Chen
- Biostatistics Center, China Medical University, Taichung, Taiwan ; Biostatistics Center and School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Jer-Yuarn Wu
- School of Chinese Medicine, China Medical University, Taichung, Taiwan ; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chien-Hsiun Chen
- School of Chinese Medicine, China Medical University, Taichung, Taiwan ; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Li-Ching Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Cheng-Wen Lin
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan
| | - Tsung-Jung Ho
- School of Chinese Medicine, China Medical University, Taichung, Taiwan ; Division of Chinese Medicine, China Medical University Beigang Hospital, Yunlin County, Taiwan ; Division of Chinese Medicine, Tainan Municipal An-Nan Hospital -China Medical University, Tainan, Taiwan
| | - Fuu-Jen Tsai
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan ; School of Chinese Medicine, China Medical University, Taichung, Taiwan ; Asia University, Taichung, Taiwan
| |
Collapse
|
7
|
Phyllanthus emblica L. Enhances Human Umbilical Vein Endothelial Wound Healing and Sprouting. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:720728. [PMID: 23606890 PMCID: PMC3626238 DOI: 10.1155/2013/720728] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 03/05/2013] [Indexed: 01/13/2023]
Abstract
Endothelial dysfunction is the hallmark of impaired wound healing and increased risk of cardiovascular disease. Antioxidants from natural sources decrease oxidative stress and protect against cellular damage caused by reactive oxygen species (ROS). In this study, we examined the antioxidant constituents and capacity of Phyllanthus emblica L. (PE) fruit in freeze-dried power form. The pharmacological properties of PE were investigated using human umbilical vein endothelial cells (HUVECs) in the aspects of endothelial cell proliferation, nitric oxide (NO) production, wound healing, cell migration, in vitro angiogenesis, and VEGF gene expression. The ASC content of PE was 1.574% + 0.046% (w/w) as determined by HPLC and the total phenolic content was 36.1% ± 0.7% gallic acid equivalent when measured by Folin-Ciocalteu assay. The FRAP assay revealed a relatively high antioxidant capacity at 3,643 + 192.5 µmole/mg. PE at 0.1 to 10 µg/mL did not significantly influence endothelial cell proliferation, but at higher concentrations PE decreased cell survival to 62%. PE significantly promoted NO production, endothelial wound closure, endothelial sprouting, and VEGF mRNA expression. Therefore, PE is a candidate for antioxidant supplement that promotes endothelial function and restores wound healing competency.
Collapse
|
8
|
Erratum. Microcirculation 2012. [DOI: 10.1111/j.1549-8719.2012.00206.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
9
|
Metabotropic glutamate receptor 5 mediates phosphorylation of vascular endothelial cadherin and nuclear localization of β-catenin in response to homocysteine. Vascul Pharmacol 2012; 56:159-67. [PMID: 22285407 DOI: 10.1016/j.vph.2012.01.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 12/31/2011] [Accepted: 01/16/2012] [Indexed: 11/22/2022]
Abstract
Elevated plasma homocysteine (Hcy) is an independent risk factor for vascular disease and stroke in part by causing generalized endothelial dysfunction. A receptor that is sensitive to Hcy and its intracellular signaling systems has not been identified. β-catenin is a pleiotropic regulator of transcription and cell function. Using a brain microvascular endothelial cell line (bEnd.3), we tested the hypothesis that Hcy causes receptor-dependent nuclear translocation of β-catenin. Hcy increased phosphorylation of Y731 on vascular endothelial cadherin (VE-cadherin), a site involved in coupling β-catenin to VE-cadherin. This was blocked by inhibition of either metabotropic glutamate receptor 5 (mGluR5) or ionotropic glutamate receptor (NMDAr) and by shRNA knockdown of mGluR5. Expression of these receptors was confirmed by flow cytometry, immunohistochemistry, and western blotting. Directed pharmacology with specific agonists elucidated a signaling cascade where Hcy activates mGluR5 which activates NMDAr with subsequent PKC activation and uncoupling of the VE-cadherin/β-catenin complex. Moreover, Hcy caused a shift in localization of β-catenin from membrane-bound VE-cadherin to the cell nucleus, where it bound DNA, including a regulatory region of the gene for claudin-5, leading to reduced expression of claudin-5. Nuclear localization, DNA binding of β-catenin, and reduced claudin-5 expression were blocked by inhibition of mGluR5. Knockdown of mGluR5 expression with shRNA also rescued claudin-5 expression from the effects of Hcy treatment. These data uniquely identify mGluR5 as a master switch that drives β-catenin nuclear localization in vascular endothelium and regulates cell-cell coupling in response to elevated Hcy levels. These studies dissect a pharmacological opportunity for developing new therapeutic strategies in HHcy.
Collapse
|