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Bin XN, Xu TJ, Zou HP, Lian Z, Cheng Y, Wu JQ, He MF. Efficacy and Mechanism Study of 6S-5-Methyltetrahydrofolate-Calcium Against Telencephalon Infarction Injury in Zebrafish Model of Ischemic Stroke. Mol Neurobiol 2024; 61:434-449. [PMID: 37624487 DOI: 10.1007/s12035-023-03588-1] [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: 05/10/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023]
Abstract
Ischemic stroke is a heterogeneous brain injury with complex pathophysiology and it is also a time sensitive neurological injury disease. At present, the treatment options for ischemic stroke are still limited. 6S-5-methyltetrahydrofolate-calcium (MTHF-Ca) is the calcium salt of the predominant form of dietary folate in circulation. MTHF-Ca has potential neuroprotective effect on neurocytes, but whether it can be used for ischemic stroke treatment remains unknown. We established zebrafish ischemic stroke model through photothrombotic method to evaluate the protective effect of MTHF-Ca on the ischemic brain injury of zebrafish. We demonstrated that MTHF-Ca reduced the brain damage by reducing motor dysfunction and neurobehavioral defects of zebrafish with telencephalon infarction injury. MTHF-Ca counteracted oxidative damages after Tel injury by increasing the activities of GSH-Px and SOD and decreasing the content of MDA. RNA-seq and RT-qPCR results showed that MTHF-Ca played a neuroprotective role by alleviating neuroinflammation, inhibiting blood coagulation, and neuronal apoptosis processes. Overall, we have demonstrated that MTHF-Ca has neuroprotective effect in ischemic stroke and can be used as a potential treatment for ischemic stroke.
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Affiliation(s)
- Xin-Ni Bin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Tao-Jun Xu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Han-Peng Zou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Zenglin Lian
- Institute of Biological Chinese Medicine, Beijing Yichuang Institute of Biotechnology Industry, Beijing, 100023, China
| | - Yongzhi Cheng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Jia-Qi Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.
| | - Ming-Fang He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.
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Zhang J, Liu YP, Bu LJ, Liu Q, Pei CX, Huo WJ. Effects of dietary folic acid supplementation on lactation performance and mammary epithelial cell development of dairy cows and its regulatory mechanism. Anim Biotechnol 2023; 34:3796-3807. [PMID: 37409454 DOI: 10.1080/10495398.2023.2228842] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
The experiment investigated the impacts of FA on the proliferation of bovine mammary gland epithelial cells (BMECs) and to investigate the underlying mechanisms. Supplementation of 10 µM FA elevated the mRNA expression of proliferating cell nuclear antigen (PCNA), cyclin A2 and cyclin D1, and protein expression of PCNA and Cyclin A1. The mRNA and protein expression of B-cell lymphoma-2 (BCL2) and the BCL2 to BCL2 associated X 4 (BAX4) ratio elevated, while that of BAX, Caspase-3 and Caspase-9 reduced by FA. Both Akt and mTOR signaling pathways were activated by FA. Moreover, the stimulation of BMECs proliferation, the alteration of proliferative genes and protein expression, the change of apoptotic genes and protein expression, and the activation of mTOR signaling pathway caused by FA were obstructed by Akt inhibitor. Suppression of mTOR with Rapamycin reversed the FA-modulated promotion of BMECs proliferation and change of proliferous genes and protein expression, with no impact on mRNA or proteins expression related to apoptosis and FA-activated Akt signaling pathway. Supplementation of rumen-protected FA in cow diets evaluated milk yields and serum insulin-like growth factor-1 and estradiol levels. The results implied that the proliferation of BMECs was stimulated by FA through the Akt-mTOR signaling pathway.
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Affiliation(s)
- Jing Zhang
- College of Animal Sciences, Shanxi Agricultural University, Taigu, Shanxi, P. R. China
| | - Ya-Peng Liu
- College of Animal Sciences, Shanxi Agricultural University, Taigu, Shanxi, P. R. China
| | - Li-Jun Bu
- College of Animal Sciences, Shanxi Agricultural University, Taigu, Shanxi, P. R. China
| | - Qiang Liu
- College of Animal Sciences, Shanxi Agricultural University, Taigu, Shanxi, P. R. China
| | - Cai-Xia Pei
- College of Animal Sciences, Shanxi Agricultural University, Taigu, Shanxi, P. R. China
| | - Wen-Jie Huo
- College of Animal Sciences, Shanxi Agricultural University, Taigu, Shanxi, P. R. China
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Munteanu C, Berindean I, Mihai M, Pop B, Popa M, Muntean L, Petrescu O, Ona A. E, K, B5, B6, and B9 vitamins and their specific immunological effects evaluated by flow cytometry. Front Med (Lausanne) 2023; 9:1089476. [PMID: 36687400 PMCID: PMC9849766 DOI: 10.3389/fmed.2022.1089476] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/12/2022] [Indexed: 01/07/2023] Open
Abstract
It has been proven that vitamins play an essential role in preventing certain diseases since ancient times. It is thus fruitless to approach the roles of vitamins without making reference to the techniques used in evaluating the effects of these micronutrients. Therefore, the aim of this paper was to summarize the immunological effects of E, K, B5, B6, and B9 vitamins evaluated by flow cytometry. Some of these significant effects were presented and discussed: (a) The role of vitamins E in the prevention and treatment of different types of cancer. (b) The properties of K vitamins in the development and maintenance of pheochromocytoma Cell Line 12 (PC12) cells in Parkinson's disease; (c) The improvement effect of vitamin B5 on the loss of bone mass in low estrogen conditions; (d) The anticancer role of vitamins B6. (e) The role of Vitamin B9 in the regulation of Treg cells. As such, the flow cytometry technique used to assess these properties is essential to evaluate the immunomodulatory effects of certain vitamins. The technique undergoes constant improvement which makes it possible to determine several parameters with a role in the modulation of the immune function and at the same time increase the accuracy of the methods that highlight them.
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Affiliation(s)
- Camelia Munteanu
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Ioana Berindean
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Mihaela Mihai
- Department of Transversal Competencies, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Bianca Pop
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Mihai Popa
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Leon Muntean
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Olivia Petrescu
- Department of Applied Modern Languages, Faculty of Letters, Babeş-Bolyai University, Cluj-Napoca, Romania
| | - Andreea Ona
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania,*Correspondence: Andreea Ona,
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Akhgarjand C, Ebrahimi Mousavi S, Kalantar Z, Bagheri A, Imani H, Rezvani H, Ghorbi MD, Vahabi Z. Does folic acid supplementation have a positive effect on improving memory? A systematic review and meta-analysis of randomized controlled trials. Front Aging Neurosci 2022; 14:966933. [PMID: 36518821 PMCID: PMC9742231 DOI: 10.3389/fnagi.2022.966933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 11/03/2022] [Indexed: 09/25/2023] Open
Abstract
INTRODUCTION The results of randomized controlled trials (RCTs) on the effect of folic acid supplementation on memory status due to various heterogeneity, dosage, duration, and cognitive function assessments were inconclusive. Therefore, we have performed a systematic review and meta-analysis to investigate the effect of folic acid supplementation on memory in RCTs. METHOD Comprehensive computerized systematic searches were conducted throughout Scopus, PubMed/Medline, and Google Scholar from inception until February 2022 to investigate the effect of folic acid supplementation memory levels in RCTs. The standardized mean difference (SMD) and 95% confidence interval (CIs) were used to estimate the overall effect size using random-effects meta-analyses. RESULTS The overall results of nine trials with 641 participants, revealed that folic acid supplementation did not significantly change memory score compared to placebo (SMD: 0.12; 95% CI: -0.17, 0.40, p = 0.418; I 2 = 62.6%). However, subgroup analyses showed that supplementation with folic acid had favorable effects on memory levels considering the following conditions: (1) doses lower than 1 mg/day, (2) treatment lasting more than 6 months, (3) conducted in eastern countries, and (4) in participants equal to or older than 70 years old. The dose-response analysis suggested a significant favorable effect on memory status at doses of 6-11 mg/d and a significant decline at doses of 17-20 mg/d. DISCUSSION Although we did not find a significant effect of folic acid supplementation on memory, there were some suggestions of beneficial effects in the subgroup analyses.
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Affiliation(s)
- Camellia Akhgarjand
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Ebrahimi Mousavi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Kalantar
- Department of Cellular and Molecular Nutrition, School of Nutrition Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Bagheri
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Hossein Imani
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Rezvani
- Hemato-Oncology Ward, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahmoud Dehghani Ghorbi
- Hemato-Oncology Ward, Imam Hossein Hospital, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Zahra Vahabi
- Cognitive Neurology and Neuropsychiatry Division, Department of Psychiatry, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Geriatric, Ziaeian Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Xu X, Johnson Z, Wang A, Padget RL, Smyth JW, Xie H. Folate regulates RNA m 5C modification and translation in neural stem cells. BMC Biol 2022; 20:261. [PMID: 36424632 PMCID: PMC9686110 DOI: 10.1186/s12915-022-01467-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Folate is an essential B-group vitamin and a key methyl donor with important biological functions including DNA methylation regulation. Normal neurodevelopment and physiology are sensitive to the cellular folate levels. Either deficiency or excess of folate may lead to neurological disorders. Recently, folate has been linked to tRNA cytosine-5 methylation (m5C) and translation in mammalian mitochondria. However, the influence of folate intake on neuronal mRNA m5C modification and translation remains largely unknown. Here, we provide transcriptome-wide landscapes of m5C modification in poly(A)-enriched RNAs together with mRNA transcription and translation profiles for mouse neural stem cells (NSCs) cultured in three different concentrations of folate. RESULTS NSCs cultured in three different concentrations of folate showed distinct mRNA methylation profiles. Despite uncovering only a few differentially expressed genes, hundreds of differentially translated genes were identified in NSCs with folate deficiency or supplementation. The differentially translated genes induced by low folate are associated with cytoplasmic translation and mitochondrial function, while the differentially translated genes induced by high folate are associated with increased neural stem cell proliferation. Interestingly, compared to total mRNAs, polysome mRNAs contained high levels of m5C. Furthermore, an integrative analysis indicated a transcript-specific relationship between RNA m5C methylation and mRNA translation efficiency. CONCLUSIONS Altogether, our study reports a transcriptome-wide influence of folate on mRNA m5C methylation and translation in NSCs and reveals a potential link between mRNA m5C methylation and mRNA translation.
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Affiliation(s)
- Xiguang Xu
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA, 24061, USA
- Department of Biological Sciences, College of Science, Virginia Tech, Blacksburg, VA, 24061, USA
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Zachary Johnson
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA, 24061, USA
- Genetics, Bioinformatics and Computational Biology Program, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Amanda Wang
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Rachel L Padget
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA, 24061, USA
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, 24016, USA
| | - James W Smyth
- Department of Biological Sciences, College of Science, Virginia Tech, Blacksburg, VA, 24061, USA
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA, 24061, USA
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, 24016, USA
- Virginia Tech Carilion School of Medicine, Roanoke, VA, 24016, USA
| | - Hehuang Xie
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA, 24061, USA.
- Department of Biological Sciences, College of Science, Virginia Tech, Blacksburg, VA, 24061, USA.
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA.
- Genetics, Bioinformatics and Computational Biology Program, Virginia Tech, Blacksburg, VA, 24061, USA.
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA, 24061, USA.
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The use of insulin-transferrin-selenium (ITS), and folic acid on individual in vitro embryo culture systems in cattle. Theriogenology 2022; 184:153-161. [DOI: 10.1016/j.theriogenology.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 11/21/2022]
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7
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Huang L, Zhao J, Chen Y, Ma F, Huang G, Li W. Baseline folic acid status affects the effectiveness of folic acid supplements in cognitively relevant outcomes in older adults: a systematic review. Aging Ment Health 2022; 26:457-463. [PMID: 33463361 DOI: 10.1080/13607863.2021.1875194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Folic acid was investigated for decreased concentrations of the same type of cysteine (Hcy), which is considered a risk factor for Alzheimer's disease. However, the conclusions are inconsistent, while supplementing elders with different folic acid states. METHOD The PubMed, Science Network and EMBASE databases were searched for randomized controlled trials published over the past decade; The 11/485 study was included on the basis of pre-defined criteria. Cognitive-related results, including cognitive function and brain atrophy, were measured using cognitive scales and magnetic resonance imaging. RESULTS Significant cognitive benefits were reported in individuals with incomplete folic acid (n s 4); However, individuals with sufficient folic acid (n s 2) do not benefit from supplements, evaluated by the cognitive scale. On the other hand, a significant positive association was established in the participants of plasma Hcy, but the folic acid state was sufficient (n s 2). One study reported that folic acid supplements did not provide any benefit, but folic acid status data were missing. In addition, folic acid supplementation also improves brain atrophy (n s 2). CONCLUSION Baseline folic acid status may be a potential factor affecting the results of cognitive function folic acid supplementation in older adults. Older people with insufficient folic acid will benefit from folic acid supplementation.
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Affiliation(s)
- Ling Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China
| | - Jing Zhao
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China
| | - Yongjie Chen
- Department of Epidemiology and Biostatists, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| | - Fei Ma
- Department of Epidemiology and Biostatists, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
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Inhibitors of DNA Methylation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1389:471-513. [DOI: 10.1007/978-3-031-11454-0_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Li Z, Li W, Zhou D, Zhao J, Ma Y, Huang L, Dong C, Wilson JX, Huang G. Alleviating Oxidative Damage-Induced Telomere Attrition: a Potential Mechanism for Inhibition by Folic Acid of Apoptosis in Neural Stem Cells. Mol Neurobiol 2021; 59:590-602. [PMID: 34741234 DOI: 10.1007/s12035-021-02623-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 10/26/2021] [Indexed: 01/07/2023]
Abstract
DNA oxidative damage can cause telomere attrition or dysfunction that triggers cell senescence and apoptosis. The hypothesis of this study is that folic acid decreases apoptosis in neural stem cells (NSCs) by preventing oxidative stress-induced telomere attrition. Primary cultures of NSCs were incubated for 9 days with various concentrations of folic acid (0-40 µM) and then incubated for 24 h with a combination of folic acid and an oxidant (100-µM hydrogen peroxide, H2O2), antioxidant (10-mM N-acetyl-L-cysteine, NAC), or vehicle. Intracellular folate concentration, apoptosis rate, cell proliferative capacity, telomere length, telomeric DNA oxidative damage, telomerase activity, intracellular reactive oxygen species (ROS) levels, cellular oxidative damage, and intracellular antioxidant enzyme activities were determined. The results showed that folic acid deficiency in NSCs decreased intracellular folate concentration, cell proliferation, telomere length, and telomerase activity but increased apoptosis, telomeric DNA oxidative damage, and intracellular ROS levels. In contrast, folic acid supplementation dose-dependently increased intracellular folate concentration, cell proliferative capacity, telomere length, and telomerase activity but decreased apoptosis, telomeric DNA oxidative damage, and intracellular ROS levels. Exposure to H2O2 aggravated telomere attrition and oxidative damage, whereas NAC alleviated the latter. High doses of folic acid prevented telomere attrition and telomeric DNA oxidative damage by H2O2. In conclusion, inhibition of telomeric DNA oxidative damage and telomere attrition in NSCs may be potential mechanisms of inhibiting NSC apoptosis by folic acid.
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Affiliation(s)
- Zhenshu Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
- Center for International Collaborative Research On Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Dezheng Zhou
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Jing Zhao
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Yue Ma
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Ling Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Cuixia Dong
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - John X Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214-8028, USA
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China.
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China.
- Center for International Collaborative Research On Environment, Nutrition and Public Health, Tianjin, 300070, China.
- The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, 300070, China.
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Li QY, Chen J, Luo YH, Zhang W, Xiao EH. Sodium Butyrate Pre-Treatment Enhance Differentiation of Bone Marrow Mesenchymal Stem Cells (BM-MSCs) into Hepatocytes and Improve Liver Injury. Curr Mol Med 2021; 22:663-674. [PMID: 34649486 DOI: 10.2174/1566524021666211014161716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The treatment of liver failure by stem cell transplantation has attracted growing interest. Herein, we aim to explore the role of sodium butyrate (NaB) in the hepatic differentiation of bone marrow mesenchymal stem cells (BM-MSCs) under liver-specific factors induction in vitro and vivo. MATERIALS & METHODS We isolated BM-MSCs from the mononuclear cell fraction of rabbit bone marrow samples, and identified the cells by Immunophenotypic analysis. We investigated the effects of different concentrations and induction conditions. The histone deacetylase inhibitor NaB induced hepatic differentiation of BM-MSCs under liver-specific factors induction in vitro. Morphological features, liver-specific gene and protein expression, and functional analyses in vitro and vivo were performed to evaluate the hepatic differentiation of BM-MSCs. RESULTS Our results showed that pre-treated NaB inhibited the expression of liver-specific protein in a dose-dependent manner. The induction efficiency of NaB with 24h pre-treatment was higher than that of NaB continuous intervention. 0.5 mM 24h NaB pre-treated cells can improve liver tissue damage in vivo. And the liver ALB, AAT and the serum TP were significantly increased, while the serum ALT was significantly reduced. CONCLUSION Continuous NaB treatment can inhibit BM-MSCs proliferation in a dose-dependent manner at a certain concentration range. 0.5 mM 24h pre-treatment of NaB enhanced differentiation of BM-MSCs into hepatocytes and improves liver injury in vitro and vivo.
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Affiliation(s)
- Qiu-Yun Li
- Department of Radiology, Second Xiangya hospital of Central South University, Changsha, Hunan, 410011. China
| | - Juan Chen
- Department of Radiology, Second Xiangya hospital of Central South University, Changsha, Hunan, 410011. China
| | - Yong-Heng Luo
- Department of Radiology, Second Xiangya hospital of Central South University, Changsha, Hunan, 410011. China
| | - Wei Zhang
- Department of Radiology, Second people's hospital of Hunan Province, Changsha, Hunan, 410007. China
| | - En-Hua Xiao
- Department of Radiology, Second Xiangya hospital of Central South University, Changsha, Hunan, 410011. China
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Muhsen M, Youngs J, Riu A, Gustafsson JÅ, Kondamadugu VS, Garyfalidis E, Bondesson M. Folic acid supplementation rescues valproic acid-induced developmental neurotoxicity and behavioral alterations in zebrafish embryos. Epilepsia 2021; 62:1689-1700. [PMID: 33997963 DOI: 10.1111/epi.16915] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Fetal exposure to the anticonvulsant drug valproic acid (VPA), used to treat certain types of epilepsy, increases the risk for birth defects, including neural tube defects, as well as learning difficulties and behavioral problems. Here, we investigated neurotoxic effects of VPA exposure using zebrafish as a model organism. The capacity of folic acid (FA) supplementation to rescue the VPA-induced neuronal and behavioral perturbations was also examined. METHODS Zebrafish embryos of different transgenic lines with neuronal green fluorescent protein expression were exposed to increasing concentrations of VPA with or without FA supplementation. Fluorescence microscopy was used to visualize alterations in brain structures and neural progenitor cells, as well as motor neurons and neurite sprouting. A twitching behavioral assay was used to examine the functional consequences of VPA and FA treatment. RESULTS In zebrafish embryos, VPA exposure caused a decrease in the midbrain size, an increase in the midline gap of the hindbrain, and perturbed neurite sprouting of secondary motor neurons, in a concentration-dependent manner. VPA exposure also decreased the fluorescence intensity of neuronal progenitor cells in early developmental stages, indicating fewer cells. Furthermore, VPA exposure significantly altered embryonic twitching activity, causing hyperactivity in dark and hypoactivity in light. Supplementation of FA rescued the VPA-induced smaller midbrain size and hindbrain midline gap defects. FA treatment also increased the number of neuronal progenitor cells in VPA-treated embryos and salvaged neurite sprouting of the secondary motor neurons. FA rescued the VPA-induced alterations in twitching activity in light but not in dark. SIGNIFICANCE We conclude that VPA exposure induces specific neurotoxic perturbations in developing zebrafish embryos, and that FA reversed most of the identified defects. The results demonstrate that zebrafish is a promising model to study VPA-induced teratogenesis and to screen for countermeasures.
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Affiliation(s)
- Maram Muhsen
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana, USA
| | - Jaclyn Youngs
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana, USA
| | - Anne Riu
- Department of Biology and Biochemistry, Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, Texas, USA
| | - Jan-Åke Gustafsson
- Department of Biology and Biochemistry, Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, Texas, USA.,Department of Biosciences and Nutrition, Karolinska Institute, Solna, Sweden
| | - Vijay Sai Kondamadugu
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana, USA
| | - Elefterios Garyfalidis
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana, USA
| | - Maria Bondesson
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana, USA
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Li N, Zhang D, Cao S, Qiao M, Zhang P, Zhao Q, Shen Y, Huang X, Song L. The effects of folic acid on RNA m6A methylation in hippocampus as well as learning and memory ability of rats with acute lead exposure. J Funct Foods 2021. [DOI: 10.1016/j.jff.2020.104276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Wang X, Li W, Li Z, Ma Y, Yan J, Wilson JX, Huang G. Maternal Folic Acid Supplementation During Pregnancy Promotes Neurogenesis and Synaptogenesis in Neonatal Rat Offspring. Cereb Cortex 2020; 29:3390-3397. [PMID: 30137237 DOI: 10.1093/cercor/bhy207] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/08/2018] [Indexed: 12/25/2022] Open
Abstract
Maternal folic acid supplementation during pregnancy is associated with improved cognitive performances in offspring. However, the effect of supplementation on offspring's neurogenesis and synaptogenesis is unknown, and whether supplementation should be continued throughout pregnancy is controversial. In present study, 3 groups of female rats were fed a folate-normal diet, folate-deficient diet, or folate-supplemented diet from 1 week before mating until the end of pregnancy. A fourth group fed folate-normal diet from 1 week before mating until mating, then fed folate-supplemented diet for 10 consecutive days, then fed folate-normal diet until the end of pregnancy. Offspring were sacrificed on postnatal day 0 for measurement of neurogenesis and synaptogenesis by immunofluorescence and western blot. Additionally neural stem cells (NSCs) were cultured from offspring's hippocampus for immunocytochemical measurement of their rates of proliferation and neuronal differentiation. The results demonstrated that maternal folic acid supplementation stimulated hippocampal neurogenesis by increasing proliferation and neuronal differentiation of NSCs, and also enhanced synaptogenesis in cerebral cortex of neonatal offspring. Hippocampal neurogenesis was stimulated more when supplementation was continued throughout pregnancy instead of being limited to the periconceptional period. In conclusion, maternal folic acid supplementation, especially if continued throughout pregnancy, improves neurogenesis and synaptogenesis in neonatal offspring.
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Affiliation(s)
- Xinyan Wang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Zhenshu Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yue Ma
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Jing Yan
- Department of Social Medicine and Health Administration, School of Public Health, Tianjin Medical University, Tianjin, China
| | - John X Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
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Li W, Ma Y, Li Z, Lv X, Wang X, Zhou D, Luo S, Wilson JX, Huang G. Folic Acid Decreases Astrocyte Apoptosis by Preventing Oxidative Stress-Induced Telomere Attrition. Int J Mol Sci 2019; 21:ijms21010062. [PMID: 31861819 PMCID: PMC6981374 DOI: 10.3390/ijms21010062] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 12/18/2019] [Accepted: 12/18/2019] [Indexed: 12/14/2022] Open
Abstract
Astrocytes are the most widely distributed cells in the brain, and astrocyte apoptosis may play an important role in the pathogenesis of neurodegenerative diseases. Folate is required for the normal development of the nervous system, but its effect on astrocyte apoptosis is unclear. In this study, we hypothesized that folic acid (the therapeutic form of folate) decreases astrocyte apoptosis by preventing oxidative stress-induced telomere attrition. Primary cultures of astrocytes were incubated for 12 days with various concentrations of folic acid (0-40 μmol/L), then cell proliferation, apoptosis, intracellular folate concentration, intracellular homocysteine (Hcy) concentration, intracellular reactive oxygen species (ROS) levels, telomeric DNA oxidative damage, and telomere length were determined. The results showed that folic acid deficiency decreased intracellular folate, cell proliferation, and telomere length, whereas it increased Hcy concentration, ROS levels, telomeric DNA oxidative damage, and apoptosis. In contrast, folic acid dose-dependently increased intracellular folate, cell proliferation, and telomere length but it decreased Hcy concentration, ROS levels, telomeric DNA oxidative damage, and apoptosis. In conclusion, folic acid inhibited apoptosis in astrocytes. The underlying mechanism for this protective effect may be that folic acid decreased oxidative stress and thereby prevented telomeric DNA oxidative damage and telomere attrition.
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Affiliation(s)
- Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China
| | - Yue Ma
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
| | - Zhenshu Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
| | - Xin Lv
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
| | - Xinyan Wang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
| | - Dezheng Zhou
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
| | - Suhui Luo
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China
| | - John X. Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214-8028, USA;
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China; (W.L.); (Y.M.); (Z.L.); (X.L.); (X.W.); (D.Z.); (S.L.)
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China
- Correspondence: ; Tel.: +86-22-8333-6603; Fax: +86-22-8333-6603
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Desai M, Han G, Li T, Ross MG. Programmed Epigenetic DNA Methylation-Mediated Reduced Neuroprogenitor Cell Proliferation and Differentiation in Small-for-Gestational-Age Offspring. Neuroscience 2019; 412:60-71. [PMID: 31153962 DOI: 10.1016/j.neuroscience.2019.05.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/01/2019] [Accepted: 05/22/2019] [Indexed: 12/28/2022]
Abstract
Small-for-gestational age (SGA) human newborns have an increased risk of hyperphagia and obesity, as well as a spectrum of neurologic and neurobehavioral abnormalities. We have shown that the SGA hypothalamic (appetite regulatory site) neuroprogenitor cells (NPCs) exhibit reduced proliferation and neuronal differentiation. DNA methylation (DNA methyltransferase; DNMT1) regulates neurogenesis by maintaining NPC proliferation and suppressing premature differentiation. Once differentiation ensues, DNMT1 preferentially promotes neuronal and inhibits astroglial fate. We hypothesized that the programmed dysfunction of NPC proliferation and differentiation in SGA offspring is epigenetically mediated via DNMT1. Pregnant rats received either ad libitum food (Control) or were 50% food-restricted to create SGA offspring. Primary hypothalamic NPCs from 1 day old SGA and Controls newborns were cultured and transfected with nonspecific or DNMT1-specific siRNA. NPC proliferation and protein expression of specific markers of NPC (nestin), neuroproliferative transcription factor (Hes1), neurons (Tuj1) and astrocytes (GFAP) were determined. Under basal conditions, SGA NPCs exhibited decreased DNMT1 and reduced proliferation and differentiation, as compared to Controls. In both SGA and Controls, DNMT1 siRNA in complete media inhibited NPC proliferation, consistent with reduced expression of nestin and Hes1. In differentiation media, DNMT1 siRNA decreased expression of Tuj1 but increased GFAP. In vivo data replicated these findings. In SGA offspring, impaired neurogenesis is epigenetically mediated, in part, via reduction in DNMT1 expression and suppression of Hes1 resulting in NPC differentiation. It is likely that the maturation of regions beyond the hypothalamus (e.g., cerebral cortex, hippocampus) may be impacted, contributing to poor cognitive and neurobehavioral competency in SGA offspring.
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Affiliation(s)
- Mina Desai
- Perinatal Research Laboratory, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Department of Obstetrics and Gynecology, Torrance, CA, USA; Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
| | - Guang Han
- Perinatal Research Laboratory, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Department of Obstetrics and Gynecology, Torrance, CA, USA
| | - Tie Li
- Perinatal Research Laboratory, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Department of Obstetrics and Gynecology, Torrance, CA, USA
| | - Michael G Ross
- Perinatal Research Laboratory, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Department of Obstetrics and Gynecology, Torrance, CA, USA; Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA; Department of Obstetrics and Gynecology, Charles R. Drew University, Los Angeles, CA, USA
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Kang WB, Chen YJ, Lu DY, Yan JZ. Folic acid contributes to peripheral nerve injury repair by promoting Schwann cell proliferation, migration, and secretion of nerve growth factor. Neural Regen Res 2019; 14:132-139. [PMID: 30531087 PMCID: PMC6263007 DOI: 10.4103/1673-5374.243718] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
After peripheral nerve injury, intraperitoneal injection of folic acid improves axon quantity, increases axon density and improves electromyography results. However, the mechanisms for this remain unclear. This study explored whether folic acid promotes peripheral nerve injury repair by affecting Schwann cell function. Primary Schwann cells were obtained from rats by in vitro separation and culture. Cell proliferation, assayed using the Cell Counting Kit-8 assay, was higher in cells cultured for 72 hours with 100 mg/L folic acid compared with the control group. Cell proliferation was also higher in the 50, 100, 150, and 200 mg/L folic acid groups compared with the control group after culture for 96 hours. Proliferation was markedly higher in the 100 mg/L folic acid group compared with the 50 mg/L folic acid group and the 40 ng/L nerve growth factor group. In Transwell assays, the number of migrated Schwann cells dramatically increased after culture with 100 and 150 mg/L folic acid compared with the control group. In nerve growth factor enzyme-linked immunosorbent assays, treatment of Schwann cell cultures with 50, 100, and 150 mg/L folic acid increased levels of nerve growth factor in the culture medium compared with the control group at 3 days. The nerve growth factor concentration of Schwann cell cultures treated with 100 mg/L folic acid group was remarkably higher than that in the 50 and 150 mg/L folic acid groups at 3 days. Nerve growth factor concentration in the 10, 50, and 100 mg/L folic acid groups was higher than that in the control group at 7 days. The nerve growth factor concentration in the 50 mg/L folic acid group was remarkably higher than that in the 10 and 100 mg/L folic acid groups at 7 days. In vivo, 80 μg/kg folic acid was intraperitoneally administrated for 7 consecutive days after sciatic nerve injury. Immunohistochemical staining showed that the number of Schwann cells in the folic acid group was greater than that in the control group. We suggest that folic acid may play a role in improving the repair of peripheral nerve injury by promoting the proliferation and migration of Schwann cells and the secretion of nerve growth factors.
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Affiliation(s)
- Wei-Bo Kang
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yong-Jie Chen
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Du-Yi Lu
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jia-Zhi Yan
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Fernández-Villa D, Jiménez Gómez-Lavín M, Abradelo C, San Román J, Rojo L. Tissue Engineering Therapies Based on Folic Acid and Other Vitamin B Derivatives. Functional Mechanisms and Current Applications in Regenerative Medicine. Int J Mol Sci 2018; 19:E4068. [PMID: 30558349 PMCID: PMC6321107 DOI: 10.3390/ijms19124068] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 12/30/2022] Open
Abstract
B-vitamins are a group of soluble vitamins which are cofactors of some of the enzymes involved in the metabolic pathways of carbohydrates, fats and proteins. These compounds participate in a number of functions as cardiovascular, brain or nervous systems. Folic acid is described as an accessible and multifunctional niche component that can be used safely, even combined with other compounds, which gives it high versatility. Also, due to its non-toxicity and great stability, folic acid has attracted much attention from researchers in the biomedical and bioengineering area, with an increasing number of works directed at using folic acid and its derivatives in tissue engineering therapies as well as regenerative medicine. Thus, this review provides an updated discussion about the most relevant advances achieved during the last five years, where folic acid and other vitamins B have been used as key bioactive compounds for enhancing the effectiveness of biomaterials' performance and biological functions for the regeneration of tissues and organs.
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Affiliation(s)
- Daniel Fernández-Villa
- Instituto de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas, CSIC, 28006 Madrid, Spain.
- Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, 28029 Madrid, Spain.
| | - Mirta Jiménez Gómez-Lavín
- Departamento de Química y Bioquímica. Facultad de Farmacia Universidad CEU San Pablo, 28668 Madrid, Spain.
| | - Cristina Abradelo
- Departamento de Química y Bioquímica. Facultad de Farmacia Universidad CEU San Pablo, 28668 Madrid, Spain.
| | - Julio San Román
- Instituto de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas, CSIC, 28006 Madrid, Spain.
- Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, 28029 Madrid, Spain.
| | - Luis Rojo
- Instituto de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas, CSIC, 28006 Madrid, Spain.
- Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, 28029 Madrid, Spain.
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Continuous zebularine treatment enhances hepatic differentiation of mesenchymal stem cells under liver-specific factors induction in vitro. Life Sci 2018; 215:57-63. [PMID: 30473025 DOI: 10.1016/j.lfs.2018.10.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/21/2018] [Accepted: 10/24/2018] [Indexed: 11/20/2022]
Abstract
AIMS To investigate the effect of zebularine, a stable inhibitor of DNA methylation, on hepatic differentiation of bone marrow-derived mesenchymal stem cells (BM-MSCs) under liver-specific factors induction in vitro. MAIN METHODS BM-MSCs were isolated from the mononuclear cell fraction of rabbit bone marrow samples. The identification of these cells was carried out by immunophenotype analysis. The three hepatic differentiation protocols of BM-MSCs were as follows: liver-specific factors (hepatocyte growth factor and epidermal growth factor) without zebularine, liver-specific factors combined with a 24 h zebularine pre-treatment, and liver-specific factors combined with continuous zebularine treatment. BM-MSCs cultured in basic medium without the differentiation stimuli were set as the control. Morphological features, liver-specific gene and protein expression, and functional analyses were assessed to evaluate hepatic differentiation of BM-MSCs. Global DNA methylation status was tested for investigating the underlying mechanism. KEY FINDINGS Flow cytometry immunophenotyping proved the isolated cells with plastic adherence and a spindle shape were CD29, CD90 positive and CD34, CD45 negative. Albumin (ALB) and alpha-fetoprotein (AFP) messenger RNA and protein expression, glycogen storage and urea production were significantly higher in the continuous zebularine-treated group than the other groups while the differences between the zebularine-untreated group and 24 h zebularine pre-treated group were not significant. Meanwhile, significant decrease of global DNA methylation was observed in the continuous zebularine-treated group. SIGNIFICANCE We conclude that continuous zebularine treatment can improve hepatic differentiation of BM-MSCs under liver-specific factors induction in vitro, and the decrease of global DNA methylation maybe involved in this process.
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19
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Folic Acid Has a Protective Effect on Retinal Vascular Endothelial Cells against High Glucose. Molecules 2018; 23:molecules23092326. [PMID: 30213067 PMCID: PMC6225375 DOI: 10.3390/molecules23092326] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 09/08/2018] [Accepted: 09/10/2018] [Indexed: 12/25/2022] Open
Abstract
Diabetic retinopathy (DR) is a severe complication of diabetes, which seriously affects the life quality of patients. Because of the damage caused by DR, there is an urgent need to develop effective drugs. Folic acid, a water-soluble vitamin, is one of the vitamin B complexes. Folic acid is widely found in the meat and vegetables. In the clinic, low folic acid levels in the body may have a certain correlation with DR. However, there is no relevant basic research proving a relationship between folic acid levels and DR. The purpose of this study was therefore to investigate whether folic acid has a protective effect on the retinal vascular endothelial cells against high glucose levels. Moreover, the molecular mechanism of action of folic acid was further explored. The results showed that folic acid significantly suppressed the cell viability, tube length, migrated cells and the percentage of BrdU+ cells compared with the high glucose group. Moreover, folic acid decreased the mRNA expression of TEAD1 and the protein expression of TEAD1 and YAP1. These findings indicate that folic acid can protect retinal vascular endothelial cells from high glucose-induced injury by regulating the proteins in the Hippo signaling pathway.
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Li W, Li Z, Li S, Wang X, Wilson JX, Huang G. Periconceptional Folic Acid Supplementation Benefit to Development of Early Sensory-Motor Function through Increase DNA Methylation in Rat Offspring. Nutrients 2018; 10:nu10030292. [PMID: 29494536 PMCID: PMC5872710 DOI: 10.3390/nu10030292] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/27/2018] [Accepted: 02/27/2018] [Indexed: 01/21/2023] Open
Abstract
Periconceptional maternal folate levels may alter DNA methylation patterns and health outcomes in offspring. We hypothesized that maternal folic acid supplementation alters fetal neural development through DNA methylation in the fetal brain. Twenty-eight rats were randomly assigned to four groups: three groups of the female rats were fed folate-normal, folate-deficient or folate-supplemented diets from seven days before mating to delivery. In another group, folic acid supplementation diet short-period group was fed a folate-normal diet, except for 10 days (begin mating) when this group was fed a folate-supplemented diet. After delivery, the diets were changed to folate-normal diet for all four groups. The cliff avoidance and forelimb grip tests were used to assess sensory motor function of rat offspring. The results indicate that maternal folic acid supplementation improved the early development of sensory-motor function in offspring. Maternal folic acid supplementation increased the methylation potential, global DNA methylation (5-mC) and DNA methyltransferase expression and activity in the brains of the offspring. In conclusion, maternal folic acid supplementation increases DNA methylation pattern in offspring brain and improves the early development of sensory-motor function.
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Affiliation(s)
- Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Zhenshu Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Shou Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Xinyan Wang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - John X Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214-8028, USA.
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
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Folate deprivation induces cell cycle arrest at G0/G1 phase and apoptosis in hippocampal neuron cells through down-regulation of IGF-1 signaling pathway. Int J Biochem Cell Biol 2016; 79:222-230. [DOI: 10.1016/j.biocel.2016.08.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/26/2016] [Accepted: 08/29/2016] [Indexed: 02/06/2023]
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22
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Tian T, Bai D, Li W, Huang GW, Liu H. Effects of Folic Acid on Secretases Involved in Aβ Deposition in APP/PS1 Mice. Nutrients 2016; 8:E556. [PMID: 27618097 PMCID: PMC5037541 DOI: 10.3390/nu8090556] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/31/2016] [Accepted: 09/06/2016] [Indexed: 11/23/2022] Open
Abstract
Alzheimer's disease (AD) is the most common type of dementia. Amyloid-β protein (Aβ) is identified as the core protein of neuritic plaques. Aβ is generated by the sequential cleavage of the amyloid precursor protein (APP) via the APP cleaving enzyme (α-secretase, or β-secretase) and γ-secretase. Previous studies indicated that folate deficiency elevated Aβ deposition in APP/PS1 mice, and this rise was prevented by folic acid. In the present study, we aimed to investigate whether folic acid could influence the generation of Aβ by regulating α-, β-, and γ-secretase. Herein, we demonstrated that folic acid reduced the deposition of Aβ42 in APP/PS1 mice brain by decreasing the mRNA and protein expressions of β-secretase [beta-site APP-cleaving enzyme 1 (BACE1)] and γ-secretase complex catalytic component-presenilin 1 (PS1)-in APP/PS1 mice brain. Meanwhile, folic acid increased the levels of ADAM9 and ADAM10, which are important α-secretases in ADAM (a disintegrin and metalloprotease) family. However, folic acid has no impact on the protein expression of nicastrin (Nct), another component of γ-secretase complex. Moreover, folic acid regulated the expression of miR-126-3p and miR-339-5p, which target ADAM9 and BACE1, respectively. Taken together, the effect of folic acid on Aβ deposition may relate to making APP metabolism through non-amyloidogenic pathway by decreasing β-secretase and increasing α-secretase. MicroRNA (miRNA) may involve in the regulation mechanism of folic acid on secretase expression.
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Affiliation(s)
- Tian Tian
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Dong Bai
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Guo-Wei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Huan Liu
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin 300070, China.
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Fei Z, Gao Y, Qiu M, Qi X, Dai Y, Wang S, Quan Z, Liu Y, Ou J. Down-regulation of dihydrofolate reductase inhibits the growth of endothelial EA.hy926 cell through induction of G1 cell cycle arrest via up-regulating p53 and p21(waf1/cip1) expression. J Clin Biochem Nutr 2016; 58:105-13. [PMID: 27013776 PMCID: PMC4788405 DOI: 10.3164/jcbn.15-64] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 09/15/2015] [Indexed: 01/10/2023] Open
Abstract
Folic acid supplementation may meliorate cardiovascular disease risk by improving vascular endothelial structure and function. However, the underlying mechanisms are still lack of a global understanding. To be used, folic acid must be converted to 7,8-dihydrofolate by dihydrofolate reductase to generate one-carbon derivatives serving as important cellular cofactors in the synthesis of nucleotides and amino acids required for cell growth. Therefore, this study explored the effect of dihydrofolate reductase knockdown on endothelial EA.hy926 cell growth and the mechanism involved. We found that down-regulation of dihydrofolate reductase inhibited EA.hy926 cell proliferation, and induced G1 phase arrest. Meanwhile, the expression of regulators necessary for G1/S phase transition, such as cyclin-dependent kinases CDK2, CDK4 and CDK6, were remarkably down-regulated; by contrast, the cell cycle inhibitors p21waf/cip1, p27Kip1 and p53 were significantly up-regulated after dihydrofolate reductase knockdown. Furthermore, supplementation of 5-methyltetrahydrofolate to the dihydrofolate reductase knockdown cells could weaken the inhibitory effect of dihydrofolate reductase knockdown on cell proliferation, simultaneously, inducing the expression of p53 and p21waf/cip1 falling back moderately. Our findings suggest that attenuating dihydrofolate reductase may cause imbalanced expression of cell cycle regulators, especially up-regulation of p53-p21waf/cip1 pathway, leading to G1 cell cycle arrest, thereby inhibiting the growth of endothelial EA.hy926 cells.
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Affiliation(s)
- Zhewei Fei
- Department of General Surgery, Xinhua Hospital (Chong Ming) affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 202150, China
| | - Yong Gao
- Department of Vascular Surgery, The First Affiliated Hospital of Bengbu Medical College, An Hui Province 233003, China
| | - Mingke Qiu
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Xianqin Qi
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yuxin Dai
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Shuqing Wang
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Zhiwei Quan
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yingbin Liu
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Jingmin Ou
- Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
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Lopez M, Halby L, Arimondo PB. DNA Methyltransferase Inhibitors: Development and Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 945:431-473. [DOI: 10.1007/978-3-319-43624-1_16] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Huang X, Gao Y, He J, Cai J, Ta N, Jiang H, Zhu J, Zheng J. The association between RFC1 G80A polymorphism and cancer susceptibility: Evidence from 33 studies. J Cancer 2016; 7:144-52. [PMID: 26819637 PMCID: PMC4716846 DOI: 10.7150/jca.13303] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/18/2015] [Indexed: 02/07/2023] Open
Abstract
Aberrant folate metabolism is closely related to tumorigenesis. Genetic variations in the Reduced folate carrier 1 (RFC1) may alter the progress of folate metabolism, and thereby cause the initiation and progress of the cancer. Considerable studies have performed to investigate the association between RFC1 G80A (rs1051266) polymorphism and cancer susceptibility, but the conclusions were conflicting. Therefore, we conducted a meta-analysis to reevaluate the association of RFC1 G80A polymorphism with cancer risk. PubMed and EMBASE were searched for eligible studies. The association of RFC1 G80A polymorphism and cancer risk was evaluated by the pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs). The significant association was found between RFC1 G80A polymorphism and hematological malignance susceptibility (A vs. G: OR=1.11, 95%CI=1.003-1.23, P=0.045; GA vs. GG: OR=1.18, 95%CI=1.06-1.31, P=0.002; AA+GA vs. GG: OR=1.18, 95%CI=1.07-1.29, P=0.001). Stratified analysis by ethnicity indicated that the association became more prominent among Caucasians (GA vs. GG: OR=1.28, 95%CI=1.12-1.45, P<0.001; AA+GA vs. GG: OR=1.21, 95%CI=1.08-1.36, P=0.001). In term of the cancer type, this polymorphism significantly increased the risk of acute lymphoblast leukemia (GA vs. GG: OR=1.13, 95%CI=1.001-1.28, P=0.048; AA+GA vs. GG: OR=1.28, 95%CI=1.13-1.46, P<0.001) and acute myeloid leukemia (GA vs. GG: OR=2.57, 95%CI=1.37-4.85, P=0.003). No significant association between RFC1 G80A polymorphism and overall solid cancer risk was observed, but a protective association with digestive cancer risk was found (GA vs. GG: OR=0.89, 95%CI= 0.81-0.99, P=0.030). The comprehensive meta-analysis encouraged the notion that RFC1 G80A polymorphism may play an important role in hematopoietic system malignance. These findings need further validation in the large multicenter investigations.
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Affiliation(s)
- Xiaoyi Huang
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Yisha Gao
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Jing He
- 2. Department of Pediatric Surgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Jiao Cai
- 3. Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Na Ta
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Hui Jiang
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Jinhong Zhu
- 4. Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, Harbin 150040, Heilongjiang, China
- ✉ Corresponding authors: Jianming Zheng, Department of Pathology, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai 200438, China, Tel /Fax: (+86-021) 81873689, E-mail: ; Jinhong Zhu, Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin 150040, Heilongjiang, China, Tel: (+86-0451) 86298786, Fax: (+86-0451) 86298398, E-mail:
| | - Jianming Zheng
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
- ✉ Corresponding authors: Jianming Zheng, Department of Pathology, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai 200438, China, Tel /Fax: (+86-021) 81873689, E-mail: ; Jinhong Zhu, Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin 150040, Heilongjiang, China, Tel: (+86-0451) 86298786, Fax: (+86-0451) 86298398, E-mail:
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Folic Acid Inhibits Amyloid β-Peptide Production through Modulating DNA Methyltransferase Activity in N2a-APP Cells. Int J Mol Sci 2015; 16:25002-13. [PMID: 26492244 PMCID: PMC4632786 DOI: 10.3390/ijms161025002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 09/20/2015] [Accepted: 10/12/2015] [Indexed: 12/16/2022] Open
Abstract
Alzheimer's disease (AD) is a common neurodegenerative disease resulting in progressive dementia, and is a principal cause of dementia among older adults. Folate acts through one-carbon metabolism to support the methylation of multiple substrates. We hypothesized that folic acid supplementation modulates DNA methyltransferase (DNMT) activity and may alter amyloid β-peptide (Aβ) production in AD. Mouse Neuro-2a cells expressing human APP695 were incubated with folic acid (2.8-40 μmol/L), and with or without zebularine (the DNMT inhibitor). DNMT activity, cell viability, Aβ and DNMTs expression were then examined. The results showed that folic acid stimulated DNMT gene and protein expression, and DNMT activity. Furthermore, folic acid decreased Aβ protein production, whereas inhibition of DNMT activity by zebularine increased Aβ production. The results indicate that folic acid induces methylation potential-dependent DNMT enzymes, thereby attenuating Aβ production.
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Liu H, Li W, Zhao S, Zhang X, Zhang M, Xiao Y, Wilson JX, Huang G. Folic acid attenuates the effects of amyloid β oligomers on DNA methylation in neuronal cells. Eur J Nutr 2015. [PMID: 26224648 DOI: 10.1007/s00394-015-1002-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PURPOSE Alzheimer's disease (AD) is a highly prevalent type of dementia. The epigenetic mechanism of gene methylation provides a putative link between nutrition, one-carbon metabolism, and disease progression because folate deficiency may cause hypomethylation of promoter regions in AD-relevant genes. We hypothesized that folic acid supplementation may protect neuron cells from amyloid β (Aβ) oligomer-induced toxicity by modulating DNA methylation of APP and PS1 in AD models. METHODS Primary hippocampal neuronal cells and hippocampal HT-22 cells were incubated for 24 h with a combination of folic acid and either Aβ oligomers or vehicle and were then incubated for 72 h with various concentrations of folic acid. AD transgenic mice were fed either folate-deficient or control diets and gavaged daily with various doses of folic acid (0 or 600 μg/kg). DNA methyltransferase (DNMT) activity, cell viability, methylation potential of cells, APP and PS1 expression, and the methylation of the respective promoters were determined. RESULTS Aβ oligomers lowered DNMT activity, increased PS1 and APP expression, and decreased cell viability. Folic acid dose-dependently stimulated methylation potential and DNMT activity, altered PS1 and APP promoter methylation, decreased PS1 and APP expression, and partially preserved cell viability. Folic acid increased PS1 and APP promoter methylation in AD transgenic mice. CONCLUSION These results suggest a mechanism by which folic acid may prevent Aβ oligomer-induced neuronal toxicity.
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Affiliation(s)
- Huan Liu
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Shijing Zhao
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Xumei Zhang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Meilin Zhang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Yanyu Xiao
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - John X Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China.
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Li W, Liu H, Yu M, Zhang X, Zhang M, Wilson JX, Huang G. Folic acid administration inhibits amyloid β-peptide accumulation in APP/PS1 transgenic mice. J Nutr Biochem 2015; 26:883-91. [PMID: 25959374 DOI: 10.1016/j.jnutbio.2015.03.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 02/24/2015] [Accepted: 03/31/2015] [Indexed: 10/23/2022]
Abstract
Alzheimer's disease (AD) is associated with malnutrition, altered one-carbon metabolism and increased hippocampal amyloid-β peptide (Aβ) accumulation. Aberrant DNA methylation may be an epigenetic mechanism that underlies AD pathogenesis. We hypothesized that folic acid acts through an epigenetic gene silencing mechanism to lower Aβ levels in the APP/PS1 transgenic mouse model of AD. APP/PS1 mice were fed either folate-deficient or control diets and gavaged daily with 120 μg/kg folic acid, 13.3mg/kg S-adenosylmethionine (SAM) or both. Examination of the mice after 60 days of treatment showed that serum folate concentration increased with intake of folic acid but not SAM. Folate deficiency lowered endogenous SAM concentration, whereas neither intervention altered S-adenosylhomocysteine concentration. DNA methyltransferase (DNMT) activity increased with intake of folic acid raised DNMT activity in folate-deficient mice. DNA methylation rate was stimulated by folic acid in the amyloid precursor protein (APP) promoter and in the presenilin 1 (PS1) promoter. Folate deficiency elevated hippocampal APP, PS1 and Aβ protein levels, and these rises were prevented by folic acid. In conclusion, these findings are consistent with a mechanism in which folic acid increases methylation potential and DNMT activity, modifies DNA methylation and ultimately decreases APP, PS1 and Aβ protein levels.
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Affiliation(s)
- Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Huan Liu
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Min Yu
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Xumei Zhang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Meilin Zhang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - John X Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.
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Kim DY, Rhee I, Paik J. Metabolic circuits in neural stem cells. Cell Mol Life Sci 2014; 71:4221-41. [PMID: 25037158 DOI: 10.1007/s00018-014-1686-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/25/2014] [Accepted: 07/14/2014] [Indexed: 12/15/2022]
Abstract
Metabolic activity indicative of cellular demand is emerging as a key player in cell fate decision. Numerous studies have demonstrated that diverse metabolic pathways have a critical role in the control of the proliferation, differentiation and quiescence of stem cells. The identification of neural stem/progenitor cells (NSPCs) and the characterization of their development and fate decision process have provided insight into the regenerative potential of the adult brain. As a result, the potential of NSPCs in cell replacement therapies for neurological diseases is rapidly growing. The aim of this review is to discuss the recent findings on the crosstalk among key regulators of NSPC development and the metabolic regulation crucial for the function and cell fate decisions of NSPCs. Fundamental understanding of the metabolic circuits in NSPCs may help to provide novel approaches for reactivating neurogenesis to treat degenerative brain conditions and cognitive decline.
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Affiliation(s)
- Do-Yeon Kim
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York City, NY, 10065, USA
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Yu M, Li W, Luo S, Zhang Y, Liu H, Gao Y, Wang X, Wilson JX, Huang G. Folic acid stimulation of neural stem cell proliferation is associated with altered methylation profile of PI3K/Akt/CREB. J Nutr Biochem 2014; 25:496-502. [DOI: 10.1016/j.jnutbio.2013.12.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 12/13/2013] [Accepted: 12/30/2013] [Indexed: 10/25/2022]
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Maternal high-fat diet affects Msi/Notch/Hes signaling in neural stem cells of offspring mice. J Nutr Biochem 2013; 25:227-31. [PMID: 24445048 DOI: 10.1016/j.jnutbio.2013.10.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 08/12/2013] [Accepted: 10/10/2013] [Indexed: 11/24/2022]
Abstract
Numerous research have begun to reveal the importance of maternal nutrition in offspring brain development. Particularly, the maternal obesity or exposure to high-fat diet has been strongly suggested to exert irreversible impact on the structure and function of offspring's brain. However, it remains obscure about whether neonatal neural stem cells (NSCs) in offspring's brain are susceptible to maternal exposure to high-fat diet. Here we focused on the alternation in the Notch signaling in NSCs derived from neonatal mice, which had been given birth by female mice with a high-fat diet and found that, in fact, the high-fat diet administration imposed effects on not only maternal mice, indicated by the accumulation of viscera fat as well as the increase in body weight and serum total cholesterol, but also NSCs in the offspring's brain, where significant increase was observed in the expression of genes, either downstream of Notch signaling or regulating this pathway, which have been shown essential for the maturation of NSCs. Therefore, our data provided the first evidence for the potential effect of maternal exposure to the high-fat diet on the Notch signaling pathway in offspring's NSCs, indicating this altered signaling response might contribute to a profound change in offspring's brains as a result of maternal high-fat diet prior to and during gestation.
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