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Pinheiro DML, de Oliveira AHS, Coutinho LG, Fontes FL, de Medeiros Oliveira RK, Oliveira TT, Faustino ALF, Lira da Silva V, de Melo Campos JTA, Lajus TBP, de Souza SJ, Agnez-Lima LF. Resveratrol decreases the expression of genes involved in inflammation through transcriptional regulation. Free Radic Biol Med 2019; 130:8-22. [PMID: 30366059 DOI: 10.1016/j.freeradbiomed.2018.10.432] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/18/2018] [Accepted: 10/18/2018] [Indexed: 02/06/2023]
Abstract
Oxidative stress generated during inflammation is associated with a wide range of pathologies. Resveratrol (RESV) displays anti-inflammatory and antioxidant activities, being a candidate for the development of adjuvant therapies for several inflammatory diseases. Despite this potential, the cellular responses induced by RESV are not well known. In this work, transcriptomic analysis was performed following lipopolysaccharide (LPS) stimulation of monocyte cultures in the presence of RESV. Induction of an inflammatory response was observed after LPS treatment and the addition of RESV led to decreases in expression of the inflammatory mediators, tumor necrosis factor-alpha (TNF-α), interleukin-8 (IL-8), and monocyte chemoattractant protein-1 (MCP-1), without cytotoxicity. RNA sequencing revealed 823 upregulated and 2098 downregulated genes (cutoff ≥2.0 or ≤-2.0) after RESV treatment. Gene ontology analysis showed that the upregulated genes were associated with metabolic processes and the cell cycle, consistent with normal cell growth and differentiation under an inflammatory stimulus. The downregulated genes were associated with inflammatory responses, gene expression, and protein modification. The prediction of master regulators using the iRegulon tool showed nuclear respiratory factor 1 (NRF1) and GA-binding protein alpha subunit (GABPA) as the main regulators of the downregulated genes. Using immunoprecipitation and protein expression assays, we observed that RESV was able to decrease protein acetylation patterns, such as acetylated apurinic/apyrimidinic endonuclease-1/reduction-oxidation factor 1 (APE1/Ref-1), and increase histone methylation. In addition, reductions in p65 (nuclear factor-kappa B (NF-κB) subunit) and lysine-specific histone demethylase-1 (LSD1) expression were observed. In conclusion, our data indicate that treatment with RESV caused significant changes in protein acetylation and methylation patterns, suggesting the induction of deacetylase and reduction of demethylase activities that mainly affect regulatory cascades mediated by NF-кB and Janus kinase/signal transducers and activators of transcription (JAK/STAT) signaling. NRF1 and GABPA seem to be the main regulators of the transcriptional profile observed after RESV treatment.
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Affiliation(s)
| | - Ana Helena Sales de Oliveira
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil; Chemistry Department, New York University, New York, NY, United States
| | - Leonam Gomes Coutinho
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil; Instituto Federal de Educação Tecnológica do Rio Grande do Norte, IFRN, São Paulo do Potengi, Brazil
| | - Fabrícia Lima Fontes
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil
| | | | - Thais Teixeira Oliveira
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil
| | - André Luís Fonseca Faustino
- Instituto do Cérebro, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Bioinformatics Multidisciplinary Environment (BioME), IMD, UFRN, Brazil
| | - Vandeclécio Lira da Silva
- Instituto do Cérebro, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Bioinformatics Multidisciplinary Environment (BioME), IMD, UFRN, Brazil
| | | | - Tirzah Braz Petta Lajus
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil
| | - Sandro José de Souza
- Instituto do Cérebro, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Bioinformatics Multidisciplinary Environment (BioME), IMD, UFRN, Brazil
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Kanubaddi KR, Yang SH, Wu LW, Lee CH, Weng CF. Nanoparticle-conjugated nutraceuticals exert prospectively palliative of amyloid aggregation. Int J Nanomedicine 2018; 13:8473-8485. [PMID: 30587972 PMCID: PMC6294069 DOI: 10.2147/ijn.s179484] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Alzheimer's disease (AD), an age-related neurodegenerative disease, the most common causes of dementia is a multifactorial pathology categorized by a complex etiology. Numerous nutraceuticals have been clinically evaluated, but some of the trials failed. However, natural compounds have some limitations due to their poor bioavailability, ineffective capability to cross the blood-brain barrier, or less therapeutic effects on AD. To overcome these disadvantages, nanoparticle-conjugated natural products could promote the bioavailability and enhance the therapeutic efficacy of AD when compared with a naked drug. This application generates and implements new prospect for drug discovery in neurodegenerative diseases. In this article, we confer AD pathology, review natural products in clinical trials, and ascertain the importance of nanomedicine coupled with natural compounds for AD.
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Affiliation(s)
- Kiran Reddy Kanubaddi
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 97401, Taiwan,
| | - Shin-Han Yang
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 97401, Taiwan,
| | - Li-Wei Wu
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 97401, Taiwan,
| | - Chia-Hung Lee
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 97401, Taiwan,
| | - Ching-Feng Weng
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 97401, Taiwan,
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Resveratrol: from enhanced biosynthesis and bioavailability to multitargeting chronic diseases. Biomed Pharmacother 2018; 109:2237-2251. [PMID: 30551481 DOI: 10.1016/j.biopha.2018.11.075] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 12/17/2022] Open
Abstract
Resveratrol, a phytoalexin with a wide range of pharmacological properties is synthesised by plants in response to stress, injury, infection or UV radiations. As it is a secondary metabolite with many health promoting properties, various methods employing microorganisms and genetic manipulation of different synthetic enzymes, have been comprehensively studied to increase its production. Its rapid metabolism and low bioavailability have been addressed by the use of bio enhancers and nano-formulations. This flavonoid is extensively researched due to its pharmacological properties such as anti-oxidative, anti-inflammatory and immuno-modulating effects. Knowledge of these properties of resveratrol has led to elaborate studies on its effect on diabetes, neurodegenerative diseases, cancer, ageing, obesity and cardiovascular diseases. At molecular level it targets sirtuin, adenosine monophosphate kinase, nuclear Factor-κB, inflammatory cytokines, anti-oxidant enzymes along with cellular processes such as angiogenesis, apoptosis, mitochondrial biogenesis, gluconeogenesis and lipid metabolism. This review discusses the properties of resveratrol and the different approaches of addressing the unfavourable synthesis and pharmacokinetics of this stilbene. Pre-clinical evaluations of resveratrol on diabetes mellitus, cardiovascular and neurological diseases are elaborately discussed and the underlying pathways involved in its therapeutic activity have been given paramount importance. Following the pre-clinical studies, clinical trials on the same reveal the efficacy of resveratrol in the effective management of these diseases. This review provides an intricate insight on resveratrol's significance from a dietary component to a therapeutic agent.
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Andrade S, Ramalho MJ, Pereira MDC, Loureiro JA. Resveratrol Brain Delivery for Neurological Disorders Prevention and Treatment. Front Pharmacol 2018; 9:1261. [PMID: 30524273 PMCID: PMC6262174 DOI: 10.3389/fphar.2018.01261] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 10/16/2018] [Indexed: 12/17/2022] Open
Abstract
Resveratrol (RES) is a natural polyphenolic non-flavonoid compound present in grapes, mulberries, peanuts, rhubarb and in several other plants. Numerous health effects have been related with its intake, such as anti-carcinogenic, anti-inflammatory and brain protective effects. The neuroprotective effects of RES in neurological diseases, such as Alzheimer's (AD) and Parkinson's (PD) diseases, are related to the protection of neurons against oxidative damage and toxicity, and to the prevention of apoptotic neuronal death. In brain cancer, RES induces cell apoptotic death and inhibits angiogenesis and tumor invasion. Despite its great potential as therapeutic agent for the treatment of several diseases, RES exhibits some limitations. It has poor water solubility and it is chemically instable, being degraded by isomerization once exposed to high temperatures, pH changes, UV light, or certain types of enzymes. Thus, RES has low bioavailability, limiting its biological and pharmacological benefits. To overcome these limitations, RES can be delivered by nanocarriers. This field of nanomedicine studies how the drug administration, pharmacokinetics, and pharmacodynamics are affected by the use of nanosized materials. The role of nanotechnology, in the prevention and treatment of neurological diseases, arises from the necessity to mask the physicochemical properties of therapeutic drugs to prolong the half-life and to be able to cross the blood-brain barrier (BBB). This can be achieved by encapsulating the drug in a nanoparticle (NP), which can be made of different kinds of materials. An increasing trend to encapsulate and direct RES to the brain has been observed. RES has been encapsulated in many different types of nanosystems, as liposomes, lipid and polymeric NPs. Furthermore, some of these nanocarriers have been modified with targeting molecules able to recognize the brain areas. Then, this article aims to overview the RES benefits and limitations in the treatment of neurological diseases, as the different nanotechnology strategies to overcome these limitations.
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Affiliation(s)
| | | | | | - Joana A. Loureiro
- LEPABE, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, Porto, Portugal
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Koushki M, Amiri‐Dashatan N, Ahmadi N, Abbaszadeh H, Rezaei‐Tavirani M. Resveratrol: A miraculous natural compound for diseases treatment. Food Sci Nutr 2018; 6:2473-2490. [PMID: 30510749 PMCID: PMC6261232 DOI: 10.1002/fsn3.855] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 09/24/2018] [Accepted: 09/26/2018] [Indexed: 12/11/2022] Open
Abstract
Resveratrol (3, 5, 4'-trihydroxystilbene) is a nonflavonoid polyphenol that naturally occurs as phytoalexin. It is produced by plant sources such as grapes, apples, blueberries, plums, and peanut. This compound has critical roles in human health and is well known for its diverse biological activities such as antioxidant and anti-inflammatory properties. Nowadays, due to rising incidence of different diseases such as cancer and diabetes, efforts to find novel and effective disease-protective agents have led to the identification of plant-derived compounds such as resveratrol. Furthermore, several in vitro and in vivo studies have revealed the effectiveness of resveratrol in various diseases such as diabetes mellitus, cardiovascular disease, metabolic syndrome, obesity, inflammatory, neurodegenerative, and age-related diseases. This review presents an overview of currently available studies on preventive properties and essential molecular mechanisms involved in various diseases.
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Affiliation(s)
- Mehdi Koushki
- Department of BiochemistryFaculty of MedicineTehran University of Medical SciencesTehranIran
| | - Nasrin Amiri‐Dashatan
- Student Research CommitteeProteomics Research CenterShahid Beheshti University of Medical SciencesTehranIran
| | - Nayebali Ahmadi
- Proteomics Research CenterFaculty of Paramedical SciencesShahid Beheshti University of Medical SciencesTehranIran
| | | | - Mostafa Rezaei‐Tavirani
- Proteomics Research CenterFaculty of Paramedical SciencesShahid Beheshti University of Medical SciencesTehranIran
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Teijido O, Cacabelos R. Pharmacoepigenomic Interventions as Novel Potential Treatments for Alzheimer's and Parkinson's Diseases. Int J Mol Sci 2018; 19:E3199. [PMID: 30332838 PMCID: PMC6213964 DOI: 10.3390/ijms19103199] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/05/2018] [Accepted: 10/08/2018] [Indexed: 12/22/2022] Open
Abstract
Cerebrovascular and neurodegenerative disorders affect one billion people around the world and result from a combination of genomic, epigenomic, metabolic, and environmental factors. Diagnosis at late stages of disease progression, limited knowledge of gene biomarkers and molecular mechanisms of the pathology, and conventional compounds based on symptomatic rather than mechanistic features, determine the lack of success of current treatments, including current FDA-approved conventional drugs. The epigenetic approach opens new avenues for the detection of early presymptomatic pathological events that would allow the implementation of novel strategies in order to stop or delay the pathological process. The reversibility and potential restoring of epigenetic aberrations along with their potential use as targets for pharmacological and dietary interventions sited the use of epidrugs as potential novel candidates for successful treatments of multifactorial disorders involving neurodegeneration. This manuscript includes a description of the most relevant epigenetic mechanisms involved in the most prevalent neurodegenerative disorders worldwide, as well as the main potential epigenetic-based compounds under investigation for treatment of those disorders and their limitations.
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Affiliation(s)
- Oscar Teijido
- EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, 15165 La Coruña, Spain.
| | - Ramón Cacabelos
- EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, 15165 La Coruña, Spain.
- Chair of Genomic Medicine, Continental University Medical School, Huancayo 12000, Peru.
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Antioxidant Activity and Neuroprotective Activity of Stilbenoids in Rat Primary Cortex Neurons via the PI3K/Akt Signalling Pathway. Molecules 2018; 23:molecules23092328. [PMID: 30213108 PMCID: PMC6225246 DOI: 10.3390/molecules23092328] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 12/28/2022] Open
Abstract
Antioxidant activity and neuroprotective activity of three stilbenoids, namely, trans-4-hydroxystilbene (THS), trans-3,5,4′-trihydroxy-stilbene (resveratrol, RES), and trans-3′,4′,3,5-tetrahydroxy-stilbene (piceatannol, PIC), against β-amyloid (Aβ)-induced neurotoxicity in rat primary cortex neurons were evaluated. THS, RES, and PIC significantly scavenged DPPH• and •OH radicals. All three stilbenoids were able to inhibit Aβ neurotoxicity by decreasing intracellular reactive oxygen species (ROS) via the PI3K/Akt signalling pathway. Specifically, stilbenoids significantly promoted Akt phosphorylation; suppressed Bcl-2/Bax expression; and inhibited caspase-9, caspase-3, and PARP cleavage. Molecular docking between stilbenoids with Akt indicated that stilbenoids could form hydrogen bond interactions with the COOH-terminal region of Akt. Additionally, the neuroprotective activity of stilbenoids correlated with the number and position of hydroxyl groups. The lack of meta-dihydroxyl groups on THS did not affect its neuroprotective activity in comparison with RES, whereas the ortho-dihydroxyl moiety on PIC significantly enhanced neuroprotective activity. These results provide new insights into the correlation between the biological activity and chemical structure of stilbenoids.
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58
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Kulashekar M, Stom SM, Peuler JD. Resveratrol's Potential in the Adjunctive Management of Cardiovascular Disease, Obesity, Diabetes, Alzheimer Disease, and Cancer. ACTA ACUST UNITED AC 2018; 118:596-605. [DOI: 10.7556/jaoa.2018.133] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tabeshpour J, Mehri S, Shaebani Behbahani F, Hosseinzadeh H. Protective effects of Vitis vinifera
(grapes) and one of its biologically active constituents, resveratrol, against natural and chemical toxicities: A comprehensive review. Phytother Res 2018; 32:2164-2190. [DOI: 10.1002/ptr.6168] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 06/12/2018] [Accepted: 07/03/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Jamshid Tabeshpour
- Department of Pharmacodynamics and Toxicology, School of Pharmacy; Mashhad University of Medical Sciences; Mashhad Iran
- Student Research Committee; Mashhad University of Medical Sciences; Mashhad Iran
| | - Soghra Mehri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy; Mashhad University of Medical Sciences; Mashhad Iran
- Pharmaceutical Research Center, Pharmaceutical Technology Institute; Mashhad University of Medical Sciences; Mashhad Iran
- Neurocognitive Research Center; Mashhad University of Medical Sciences; Mashhad Iran
| | - Fatemeh Shaebani Behbahani
- Department of Pharmacodynamics and Toxicology, School of Pharmacy; Mashhad University of Medical Sciences; Mashhad Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy; Mashhad University of Medical Sciences; Mashhad Iran
- Pharmaceutical Research Center, Pharmaceutical Technology Institute; Mashhad University of Medical Sciences; Mashhad Iran
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60
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Characteristic Components, Biological Activities and Future Prospective of Fructus Mori: a Review. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s40495-018-0135-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Wang H, Dong X, Liu Z, Zhu S, Liu H, Fan W, Hu Y, Hu T, Yu Y, Li Y, Liu T, Xie C, Gao Q, Li G, Zhang J, Ding Z, Sun J. Resveratrol Suppresses Rotenone-induced Neurotoxicity Through Activation of SIRT1/Akt1 Signaling Pathway. Anat Rec (Hoboken) 2018; 301:1115-1125. [PMID: 29350822 DOI: 10.1002/ar.23781] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/20/2017] [Accepted: 11/27/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Hui Wang
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Xiaoguang Dong
- Department of Orthopedic; Osteological Hospital of Yishengjian; Qingdao Shandong 266100 China
| | - Zengxun Liu
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Shaowei Zhu
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Haili Liu
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Wenchuang Fan
- Department of Traumatic Orthopaedics; Yantaishan Hospital; Yantai Shandong 264025 China
| | - Yanlai Hu
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Tao Hu
- Department of Orthopedic; Osteological Hospital of Yishengjian; Qingdao Shandong 266100 China
| | - Yonghui Yu
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Yizhao Li
- Department of Rehabilitation; Laiwu Rehabilitation Hospital; Laiwu Shandong 271100 China
| | - Tianwei Liu
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Chengjia Xie
- Department of Periodontics; Stomatological Hospital of Shandong University; Shandong 250012 China
| | - Qing Gao
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Guibao Li
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Jing Zhang
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Zhaoxi Ding
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
| | - Jinhao Sun
- Department of Anatomy, School of Basic Medical Sciences; Shandong University; Jinan Shandong 250012 China
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Wong SY, Tang BL. SIRT1 as a therapeutic target for Alzheimer's disease. Rev Neurosci 2018; 27:813-825. [PMID: 27497424 DOI: 10.1515/revneuro-2016-0023] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 06/12/2016] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is the most prevalent cause of dementia in the aging population worldwide. SIRT1 deacetylation of histones and transcription factors impinge on multiple neuronal and non-neuronal targets, and modulates stress response, energy metabolism and cellular senescence/death pathways. Collectively, SIRT1 activity could potentially affect multiple aspects of hippocampal and cortical neuron function and survival, thus modifying disease onset and progression. In this review, the known and potential mechanisms of action of SIRT1 with regard to AD, and its potential as a therapeutic target, are discussed.
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63
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Sirtuins as Modifiers of Huntington's Disease (HD) Pathology. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 154:105-145. [DOI: 10.1016/bs.pmbts.2017.11.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Guo J, Cheng J, North BJ, Wei W. Functional analyses of major cancer-related signaling pathways in Alzheimer's disease etiology. Biochim Biophys Acta Rev Cancer 2017; 1868:341-358. [PMID: 28694093 PMCID: PMC5675793 DOI: 10.1016/j.bbcan.2017.07.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/05/2017] [Accepted: 07/06/2017] [Indexed: 12/11/2022]
Abstract
Alzheimer's disease (AD) is an aging-related neurodegenerative disease and accounts for majority of human dementia. The hyper-phosphorylated tau-mediated intracellular neurofibrillary tangle and amyloid β-mediated extracellular senile plaque are characterized as major pathological lesions of AD. Different from the dysregulated growth control and ample genetic mutations associated with human cancers, AD displays damage and death of brain neurons in the absence of genomic alterations. Although various biological processes predominately governing tumorigenesis such as inflammation, metabolic alteration, oxidative stress and insulin resistance have been associated with AD genesis, the mechanistic connection of these biological processes and signaling pathways including mTOR, MAPK, SIRT, HIF, and the FOXO pathway controlling aging and the pathological lesions of AD are not well recapitulated. Hence, we performed a thorough review by summarizing the physiological roles of these key cancer-related signaling pathways in AD pathogenesis, comprising of the crosstalk of these pathways with neurofibrillary tangle and senile plaque formation to impact AD phenotypes. Importantly, the pharmaceutical investigations of anti-aging and AD relevant medications have also been highlighted. In summary, in this review, we discuss the potential role that cancer-related signaling pathways may play in governing the pathogenesis of AD, as well as their potential as future targeted strategies to delay or prevent aging-related diseases and combating AD.
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Affiliation(s)
- Jianping Guo
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Ji Cheng
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Brian J North
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
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Fernandes GFS, Silva GDB, Pavan AR, Chiba DE, Chin CM, Dos Santos JL. Epigenetic Regulatory Mechanisms Induced by Resveratrol. Nutrients 2017; 9:nu9111201. [PMID: 29104258 PMCID: PMC5707673 DOI: 10.3390/nu9111201] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/05/2017] [Accepted: 09/18/2017] [Indexed: 12/11/2022] Open
Abstract
Resveratrol (RVT) is one of the main natural compounds studied worldwide due to its potential therapeutic use in the treatment of many diseases, including cancer, diabetes, cardiovascular diseases, neurodegenerative diseases and metabolic disorders. Nevertheless, the mechanism of action of RVT in all of these conditions is not completely understood, as it can modify not only biochemical pathways but also epigenetic mechanisms. In this paper, we analyze the biological activities exhibited by RVT with a focus on the epigenetic mechanisms, especially those related to DNA methyltransferase (DNMT), histone deacetylase (HDAC) and lysine-specific demethylase-1 (LSD1).
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Affiliation(s)
- Guilherme Felipe Santos Fernandes
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800903 Araraquara, Brazil.
- Institute of Chemistry, São Paulo State University (UNESP), 14800060 Araraquara, Brazil.
| | | | - Aline Renata Pavan
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800903 Araraquara, Brazil.
| | - Diego Eidy Chiba
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800903 Araraquara, Brazil.
| | - Chung Man Chin
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800903 Araraquara, Brazil.
| | - Jean Leandro Dos Santos
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800903 Araraquara, Brazil.
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Jia Y, Wang N, Liu X. Resveratrol and Amyloid-Beta: Mechanistic Insights. Nutrients 2017; 9:nu9101122. [PMID: 29036903 PMCID: PMC5691738 DOI: 10.3390/nu9101122] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 09/25/2017] [Accepted: 10/02/2017] [Indexed: 12/20/2022] Open
Abstract
The amyloid-beta (Aβ) hypothesis that dyshomeostasis between Aβ production and clearance is a very early, key molecular factor in the etiology of Alzheimer’s disease (AD) has been proposed and examined in the AD research field. Scientists have focused on seeking natural products or drugs to influence the dynamic equilibrium of Aβ, targeting production and clearance of Aβ. There is emerging evidence that resveratrol (Res), a naturally occurring polyphenol mainly found in grapes and red wine, acts on AD in numerous in vivo and in vitro models. Res decreases the amyloidogenic cleavage of the amyloid precursor protein (APP), enhances clearance of amyloid beta-peptides, and reduces Aβ aggregation. Moreover, Res also protects neuronal functions through its antioxidant properties. This review discusses the action of Res on Aβ production, clearance and aggregation and multiple potential mechanisms, providing evidence of the useful of Res for AD treatment.
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Affiliation(s)
- Yongming Jia
- Department of Neuropharmacology, Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China.
| | - Na Wang
- Department of Pathophysiology, Qiqihar Medical University, Qiqihar 161006, China.
| | - Xuewei Liu
- Department of Neuropharmacology, Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China.
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Chen AC, Shyu LY, Hsin YL, Chen KM, Lai SC. Resveratrol relieves Angiostrongylus cantonensis - Induced meningoencephalitis by activating sirtuin-1. Acta Trop 2017; 173:76-84. [PMID: 28545897 DOI: 10.1016/j.actatropica.2017.05.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 05/17/2017] [Accepted: 05/19/2017] [Indexed: 12/20/2022]
Abstract
Resveratrol, a natural herbal compound found in high levels in grapes and red wine, is frequently used as activator of sirtuin-1. This study investigated the potential function of sirtuin-1 in regulating angiostrongyliasis meningoencephalitis in resveratrol-treated mice. Mice were subjected to meningoencephalitis to study the protective effect of resveratrol against meningoencephalitis and investigate the effects of sirtuin-1 activation on brain. Results demonstrated that sirtuin-1 level decreased in mice with meningoencephalitis and significantly increased in resveratrol-treated mice. Moreover, resveratrol treatment significantly reduced eosinophil counts, p65, Interferon-γ, interleukin (IL)-5, IL-33, and tumor necrosis factor-α levels, matrix metalloproteinase-9 activity, claudin-5 degradation, and blood-brain barrier permeability. By contrast, the anti-inflammatory factor IL-10 was significantly increased in resveratrol-treated mice. Resveratrol treatment was partially beneficial in controlling the pathological processes of angiostrongyliasis meningoencephalitis. The results demonstrate the neuroprotective and anti-inflammatory effects of resveratrol against Angiostrongylus cantonensis-induced eosinophilic meningoencephalitis in mice. Treatment with sirtuin-1 agonist was given within a therapeutic window after A. cantonensis infection.
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68
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The interplay between histone deacetylases and rho kinases is important for cancer and neurodegeneration. Cytokine Growth Factor Rev 2017; 37:29-45. [PMID: 28606734 DOI: 10.1016/j.cytogfr.2017.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/18/2017] [Accepted: 05/21/2017] [Indexed: 12/24/2022]
Abstract
Rho associated coiled-coil containing kinases (ROCKs) respond to defined extra- and intracellular stimuli to control cell migration, cell proliferation, and apoptosis. Histone deacetylases (HDACs) are epigenetic modifiers that regulate nuclear and cytoplasmic signaling through the deacetylation of histones and non-histone proteins. ROCK and HDAC functions are important compounds of basic and applied research interests. Recent evidence suggests a physiologically important interplay between HDACs and ROCKs in various cells and organisms. Here we summarize the crosstalk between these enzymatic families and its implications for cancer and neurodegeneration.
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69
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Omar SH. Biophenols pharmacology against the amyloidogenic activity in Alzheimer’s disease. Biomed Pharmacother 2017; 89:396-413. [DOI: 10.1016/j.biopha.2017.02.051] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 02/01/2023] Open
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Yin H, Wang H, Zhang H, Gao N, Zhang T, Yang Z. Resveratrol Attenuates Aβ-Induced Early Hippocampal Neuron Excitability Impairment via Recovery of Function of Potassium Channels. Neurotox Res 2017; 32:311-324. [PMID: 28361268 DOI: 10.1007/s12640-017-9726-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 03/08/2017] [Accepted: 03/13/2017] [Indexed: 12/20/2022]
Abstract
Alzheimer's disease (AD) is an age-related neurodegenerative disease. Amyloid-β (Aβ) is not only the morphological hallmark but also the initiator of the pathology process of AD. As a natural compound found in grapes, resveratrol shows a protective effect on the pathophysiology of AD, but the underlying mechanism is not very clear. This study was to investigate whether resveratrol could attenuate Aβ-induced early impairment in hippocampal neuron excitability and the underlying mechanism. The excitability and voltage-gated potassium currents were examined in rat hippocampal CA1 pyramidal neurons by using whole-cell patch-clamp technique. It was found that Aβ25-35 increased the excitability of neurons. Resveratrol could reverse the Aβ25-35-induced increase in the frequency of repetitive firing and the spike half-width of action potential (AP). Moreover, resveratrol can attenuate Aβ25-35-induced decreases in transient potassium channel (I A ) and delay rectifier potassium channel (I K(DR)) of neurons. It was also found that resveratrol could decline the increase of protein kinase A (PKA) and inhibit the activation of PI3K/Akt signaling pathway induced by Aβ25-35. The results suggest that resveratrol alleviates Aβ25-35-induced dysfunction in hippocampal CA1 pyramidal neurons via recovery of the function of I A and I K(DR) by inhibiting the increase of PKA and the activation of PI3K/Akt signaling pathway.
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Affiliation(s)
- Hongqiang Yin
- School of Medicine, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, People's Republic of China
| | - Hui Wang
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, Tianjin, 300071, People's Republic of China
| | - Hui Zhang
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, Tianjin, 300071, People's Republic of China
| | - Na Gao
- School of Medicine, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, People's Republic of China.,Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300200, People's Republic of China
| | - Tao Zhang
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, Tianjin, 300071, People's Republic of China
| | - Zhuo Yang
- School of Medicine, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, People's Republic of China.
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71
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Zhang S, Gao L, Liu X, Lu T, Xie C, Jia J. Resveratrol Attenuates Microglial Activation via SIRT1-SOCS1 Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2017; 2017:8791832. [PMID: 28781601 PMCID: PMC5525071 DOI: 10.1155/2017/8791832] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/12/2017] [Indexed: 02/05/2023]
Abstract
Microglial activation is involved in a variety of neurological disorders, and overactivated microglial cells can secrete large amount of proinflammatory factors and induce neuron death. Therefore, reducing microglial activation is believed to be useful in treating the disorders. In this study, we used 10 ng/ml lipopolysaccharide plus 10 U/ml interferon γ (LPS/IFNγ) to induce N9 microglial activation and explored resveratrol- (RSV-) induced effects on microglial activation and the underlying mechanism. We found that LPS/IFNγ exposure for 24 h increased inducible nitric oxide synthase (iNOS) and nuclear factor κB (NF-κB) p65 subunit expressions in the cells and enhanced tumor necrosis factor α (TNF-α) and interleukin 1β (IL-1β) releases from the cells. RSV of 25 μM reduced the iNOS and NF-κB p65 subunit expressions and the proinflammatory factors' releases; the knockdown of silent information regulator factor 2-related enzyme 1 (SIRT1) or suppressor of cytokine signaling 1 (SOCS1) by using the small interfering RNA, however, significantly abolished the RSV-induced effects on iNOS and NF-κB p65 subunit expressions and the proinflammatory factors' releases. These findings showed that microglial SIRT1-SOCS1 pathway may mediate the RSV-induced inhibition of microglial activation in the LPS/IFNγ-treated N9 microglia.
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Affiliation(s)
- Shuping Zhang
- Department of Dermatology, The First Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Lu Gao
- Department of Neurosurgery, Xi'an Children's Hospital, Xi'an 710003, China
| | - Xiuying Liu
- Guangzhou University of Chinese Medicine, Guangzhou 510045, China
| | - Tao Lu
- Department of Dermatology, The First Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Chuangbo Xie
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
| | - Ji Jia
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
- *Ji Jia:
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72
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Wang R, Zhang Y, Li J, Zhang C. Resveratrol ameliorates spatial learning memory impairment induced by Aβ 1-42 in rats. Neuroscience 2016; 344:39-47. [PMID: 27600946 DOI: 10.1016/j.neuroscience.2016.08.051] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 08/15/2016] [Accepted: 08/29/2016] [Indexed: 01/09/2023]
Abstract
β-amyloid (Aβ) deposition is considered partially responsible for cognitive dysfunction in Alzheimer's disease (AD). Recently, resveratrol has been reported to play a potential role as a neuroprotective biofactor by modulating Aβ pathomechanisms, including through anti-neuronal apoptotic, anti-oxidative stress, and anti-neuroinflammatory effects. In addition, SIRT1 has been demonstrated to modulate learning and memory function by regulating the expression of cAMP response binding protein (CREB), which involves in modulating the expression of SIRT1. However, whether resveratrol can alleviate Aβ-induced cognitive dysfunction, whether SIRT1 expression and CREB phosphorylation in the hippocampus are affected by Aβ, and whether resveratrol influences these effects remain unknown. In the present study, we used a hippocampal injection model in rats to investigate the effects of resveratrol on Aβ1-42-induced impairment of spatial learning, memory and synaptic plasticity as well as on alterations of SIRT1 expression and CREB phosphorylation. We found that resveratrol significantly reversed the water maze behavioral impairment and the attenuation of long-term potentiation (LTP) in area CA1 that were induced by hippocampal injection of Aβ1-42. Interestingly, resveratrol also prevented the Aβ1-42-induced reductions in SIRT1 expression and CREB phosphorylation in rat hippocampus. In conclusion, in rats, resveratrol protects neurons against Aβ1-42-induced disruption of spatial learning, memory and hippocampal LTP. The mechanisms underlying the neuroprotective effects may involve rescue of SIRT1 expression and CREB phosphorylation.
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Affiliation(s)
- Rui Wang
- National Key Disciplines, Key Laboratory for Cellular Physiology of Ministry of Education, Department of Neurobiology, Shanxi Medical University, #56 Xin Jian South Road, Taiyuan 030001, Shanxi Province, PR China.
| | - Yu Zhang
- National Key Disciplines, Key Laboratory for Cellular Physiology of Ministry of Education, Department of Neurobiology, Shanxi Medical University, #56 Xin Jian South Road, Taiyuan 030001, Shanxi Province, PR China.
| | - Jianguo Li
- National Key Disciplines, Key Laboratory for Cellular Physiology of Ministry of Education, Department of Neurobiology, Shanxi Medical University, #56 Xin Jian South Road, Taiyuan 030001, Shanxi Province, PR China.
| | - Ce Zhang
- National Key Disciplines, Key Laboratory for Cellular Physiology of Ministry of Education, Department of Neurobiology, Shanxi Medical University, #56 Xin Jian South Road, Taiyuan 030001, Shanxi Province, PR China.
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73
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Wang J, Chen GJ. Mitochondria as a therapeutic target in Alzheimer's disease. Genes Dis 2016; 3:220-227. [PMID: 30258891 PMCID: PMC6150105 DOI: 10.1016/j.gendis.2016.05.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 05/30/2016] [Indexed: 11/29/2022] Open
Abstract
Alzheimer's disease (AD) remains the most common neurodegenerative disease characterized by β-amyloid protein (Aβ) deposition and memory loss. Studies have shown that mitochondrial dysfunction plays a crucial role in AD, which involves oxidative stress-induced respiratory chain dysfunction, loss of mitochondrial biogenesis, defects of mitochondrial dynamics and mtDNA mutations. Thus mitochondria might serve as drug therapy target for AD. In this article, we first briefly discussed mitochondrial theory in the development of AD, and then we summarized recent advances of mitochondrial abnormalities in AD pathology and introduced a series of drugs and techniques targeting mitochondria. We think that maintaining mitochondrial function may provide a new way of thinking in the treatment of AD.
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Affiliation(s)
| | - Guo-Jun Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
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74
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Li Q, Li X, Wang L, Zhang Y, Chen L. miR-98-5p Acts as a Target for Alzheimer's Disease by Regulating Aβ Production Through Modulating SNX6 Expression. J Mol Neurosci 2016; 60:413-420. [PMID: 27541017 DOI: 10.1007/s12031-016-0815-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 08/01/2016] [Indexed: 01/01/2023]
Abstract
Accumulation of amyloid β-peptide (Aβ) in the brain of Alzheimer disease (AD) patients is believed to be the main pathological feature of the disease. Meanwhile, miR-98-5p dysregulation was found in AD. However, whether miR-98-5p is involved in the accumulation of Aβ in AD, the underlying molecule mechanism remains unclear. In the present study, we confirmed that miR-98-5p negatively regulated sorting nexin 6 (SNX6) expression by targeting the 3'-UTR of SNX6 mRNA. Downregulation of miR-98-5p alleviated Aβ-induced viability inhibition and decreased apoptosis in SK-N-SH and SH-SY5Y cells by upregulating SNX6 expression. Furthermore, downregulation of miR-98-5p decreased SNX6-dependent levels of Aβ40, Aβ42, β-site APP-cleaving enzyme 1 (BACE1), soluble amyloid precursor protein β (sAPPβ), and membrane-associated APP β-carboxyl terminal fragment (βCTF) in SK-N-SH and HEK293 cells. Our findings demonstrate that miR-98-5p modulates SNX6 expression and thus plays a critical role in accumulation of Aβ. Therefore, miR-98-5p may be a novel therapeutic target for AD.
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Affiliation(s)
- Qiushi Li
- Department of Neurology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, People's Republic of China
| | - Xidong Li
- Department of Neurology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, People's Republic of China
| | - Li Wang
- Department of Neurology, Shenyang General Hospital of PLA, Shenyang, Liaoning, 110084, People's Republic of China
| | - Yanhui Zhang
- Department of Neurology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, People's Republic of China
| | - Long Chen
- Department of Anesthesiology, The First Affiliated Hospital of Jinzhou Medical University, 5-2 People Street, Jinzhou, Liaoning, 121000, People's Republic of China.
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75
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Arrieta-Cruz I, Knight CM, Gutiérrez-Juárez R. Acute Exposure of the Mediobasal Hypothalamus to Amyloid-β25-35 Perturbs Hepatic Glucose Metabolism. J Alzheimers Dis 2016; 46:843-8. [PMID: 25869787 DOI: 10.3233/jad-131865] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Patients with Alzheimer's disease (AD) have a higher risk for developing insulin resistance and diabetes. Amyloid plaques, a hallmark of AD, are composed of amyloid-β (Aβ). Because the mediobasal hypothalamus controls hepatic glucose production, we examined the hypothesis that its exposure to Aβ perturbs the regulation of glucose metabolism. The infusion of Aβ25-35, but not its scrambled counterpart, into the mediobasal hypothalamus of young rats, increased circulating glucose as a consequence of enhanced hepatic glucose production during pancreatic clamp studies. These findings suggest a link between AD and alterations of glucose metabolism.
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Affiliation(s)
- Isabel Arrieta-Cruz
- Department of Medicine and Diabetes Research Center, Albert Einstein College of Medicine, Yeshiva University, Bronx, NY, USA.,Department of Basic Research, National Institute of Geriatrics, Ministry of Health, Mexico City, Mexico
| | - Colette M Knight
- Department of Medicine and Diabetes Research Center, Albert Einstein College of Medicine, Yeshiva University, Bronx, NY, USA
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76
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Caloric restriction: beneficial effects on brain aging and Alzheimer’s disease. Mamm Genome 2016; 27:300-19. [DOI: 10.1007/s00335-016-9647-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 05/16/2016] [Indexed: 01/25/2023]
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77
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Resveratrol Attenuates Aβ25-35 Caused Neurotoxicity by Inducing Autophagy Through the TyrRS-PARP1-SIRT1 Signaling Pathway. Neurochem Res 2016; 41:2367-79. [PMID: 27180189 DOI: 10.1007/s11064-016-1950-9] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/03/2016] [Accepted: 05/06/2016] [Indexed: 01/20/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by the accumulation of β-amyloid peptide (Aβ) and loss of neurons. Resveratrol (RSV) is a natural polyphenol that has been found to be beneficial for AD through attenuation of Aβ-induced toxicity in neurons both in vivo and in vitro. However, the specific underlying mechanisms remain unknown. Recently, autophagy was found to protect neurons from toxicity injuries via degradation of impaired proteins and organelles. Therefore, the aim of this study was to determine the role of autophagy in the anti-neurotoxicity effect of RSV in PC12 cells. We found that RSV pretreatment suppressed β-amyloid protein fragment 25-35 (Aβ25-35)-induced decrease in cell viability. Expression of light chain 3-II, degradation of sequestosome 1, and formation of autophagosomes were also upregulated by RSV. Suppression of autophagy by 3-methyladenine abolished the favorable effects of RSV on Aβ25-35-induced neurotoxicity. Furthermore, RSV promoted the expression of sirtuin 1 (SIRT1), auto-poly-ADP-ribosylation of poly (ADP-ribose) polymerase 1 (PARP1), as well as tyrosyl transfer-RNA (tRNA) synthetase (TyrRS). Nevertheless, RSV-mediated autophagy was markedly abolished with the addition of inhibitors of SIRT1 (EX527), nicotinamide phosphoribosyltransferase (STF-118804), PARP1 (AG-14361), as well as SIRT1 and TyrRS small interfering RNA transfection, indicating that the action of RSV on autophagy induction was dependent on TyrRS, PARP1 and SIRT1. In conclusion, RSV attenuated neurotoxicity caused by Aβ25-35 through inducing autophagy in PC12 cells, and the autophagy was partially mediated via activation of the TyrRS-PARP1-SIRT1 signaling pathway.
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78
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Ahmed T, Javed S, Javed S, Tariq A, Šamec D, Tejada S, Nabavi SF, Braidy N, Nabavi SM. Resveratrol and Alzheimer’s Disease: Mechanistic Insights. Mol Neurobiol 2016; 54:2622-2635. [DOI: 10.1007/s12035-016-9839-9] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/04/2016] [Indexed: 12/28/2022]
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79
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Wang D, Li Z, Zhang Y, Wang G, Wei M, Hu Y, Ma S, Jiang Y, Che N, Wang X, Yao J, Yin J. Targeting of microRNA-199a-5p protects against pilocarpine-induced status epilepticus and seizure damage via SIRT1-p53 cascade. Epilepsia 2016; 57:706-16. [PMID: 26945677 DOI: 10.1111/epi.13348] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2016] [Indexed: 01/10/2023]
Abstract
OBJECTIVE MicroRNAs (miRNAs) are noncoding small RNAs that control gene expression at the posttranscriptional level. Some dysregulated miRNAs have been shown to play important roles in epileptogenesis. The aim of this study was to determine if miR-199a-5p regulates seizures and seizure damage by targeting the antiapoptotic protein silent information regulator 1 (SIRT1). METHODS Hippocampal expression levels of miR-199a-5p, SIRT1, and acetylated p53 were quantified by quantitative real-time polymerase chain reaction (RT-PCR) and Western blotting in the acute, latent, and chronic stages of epilepsy in a rat lithium-pilocarpine epilepsy model. Silencing of miR-199a-5p expression in vivo was achieved by intracerebroventricular injection of antagomirs. The effects of targeting miR-199a-5p and SIRT1 protein on seizure and epileptic damage post-status epilepticus were assessed by electroencephalography (EEG) and immunohistochemistry, respectively. RESULTS miR-199a-5p expression was up-regulated, SIRT1 levels were decreased, and neuron loss and apoptosis were induced in epilepsy model rats compared with normal controls, as determined by up-regulation of acetylated p53 and cleaved caspase-3 expression. In vivo knockdown of miR-199a-5p by an antagomir alleviated the seizure-like EEG findings and protected against neuron damage, in accordance with up-regulation of SIRT1 and subsequent deacetylation of p53. Furthermore, the seizure-suppressing effect of the antagomir was partly SIRT1 dependent. SIGNIFICANCE The results of this study suggest that silencing of miR-199a-5p exerts a seizure-suppressing effect in rats, and that SIRT1 is a direct target of miR-199a-5p in the hippocampus. The effect of miR-199a-5p on seizures and seizure damage is mediated via down-regulation of SIRT1. The miR-199a-5p/SIRT1 pathway may thus represent a potential target for the prevention and treatment of epilepsy and epileptic damage.
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Affiliation(s)
- Dong Wang
- Department of Neurosurgery, Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Zhenlu Li
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Yukun Zhang
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Guangzhi Wang
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Minghai Wei
- Department of Neurosurgery, Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yan Hu
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Shuo Ma
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Yue Jiang
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Ningwei Che
- Department of Neurosurgery, Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Xiaofeng Wang
- Department of Neurosurgery, Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Jihong Yao
- Department of Pharmacology, Dalian Medical University, Dalian, Liaoning, China
| | - Jian Yin
- Department of Neurosurgery, Second Hospital of Dalian Medical University, Dalian, Liaoning, China
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80
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Treatment with the neurotoxic Aβ (25-35) peptide modulates the expression of neuroprotective factors Pin1, Sirtuin 1, and brain-derived neurotrophic factor in SH-SY5Y human neuroblastoma cells. ACTA ACUST UNITED AC 2016; 68:271-6. [PMID: 26915812 DOI: 10.1016/j.etp.2016.02.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/12/2016] [Accepted: 02/15/2016] [Indexed: 12/12/2022]
Abstract
The deposition of Amyloid β peptide plaques is a pathological hallmark of Alzheimer's disease (AD). The Aβ (25-35) peptide is regarded as the toxic fragment of full-length Aβ (1-42). The mechanism of its toxicity is not completely understood, along with its contribution to AD pathological processes. The aim of this study was to investigate the effect of the neurotoxic Aβ (25-35) peptide on the expression of the neuroprotective factors Pin1, Sirtuin1, and Bdnf in human neuroblastoma cells. Levels of Pin1, Sirtuin 1, and Bdnf were compared by real-time PCR and Western blotting in SH-SY5Y cells treated with Aβ (25-35) or administration vehicle. The level of Pin1 gene and protein expression was significantly decreased in cells exposed to 25 μM Aβ (25-35) compared to vehicle-treated controls. Similarly, Sirtuin1 expression was significantly reduced by Aβ (25-35) exposure. In contrast, both Bdnf mRNA and protein levels were significantly increased by Aβ (25-35) treatment, suggesting the activation of a compensatory response to the insult. Both Pin1 and Sirtuin 1 exert a protective role by reducing the probability of plaque deposition, since they promote amyloid precursor protein processing through non-amyloidogenic pathways. The present results show that Aβ (25-35) peptide reduced the production of these neuroprotective proteins, thus further increasing Aβ generation.
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81
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Fu Z, Yang J, Wei Y, Li J. Effects of piceatannol and pterostilbene against β-amyloid-induced apoptosis on the PI3K/Akt/Bad signaling pathway in PC12 cells. Food Funct 2016; 7:1014-23. [DOI: 10.1039/c5fo01124h] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Piceatannol and pterostilbene both showed protective effect against Aβ-induced apoptosis in PC12 cells, however, with different PI3K/Akt signaling pathways.
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Affiliation(s)
- Zheng Fu
- Center for Viticulture and Enology
- College of Food Science and Nutritional Engineering
- China Agricultural University
- Beijing 100083
- China
| | - Jiufang Yang
- Center for Viticulture and Enology
- College of Food Science and Nutritional Engineering
- China Agricultural University
- Beijing 100083
- China
| | - Yangji Wei
- Center for Viticulture and Enology
- College of Food Science and Nutritional Engineering
- China Agricultural University
- Beijing 100083
- China
| | - Jingming Li
- Center for Viticulture and Enology
- College of Food Science and Nutritional Engineering
- China Agricultural University
- Beijing 100083
- China
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82
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Resveratrol Protects PC12 Cell against 6-OHDA Damage via CXCR4 Signaling Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:730121. [PMID: 26681969 PMCID: PMC4670657 DOI: 10.1155/2015/730121] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/21/2015] [Accepted: 10/25/2015] [Indexed: 12/20/2022]
Abstract
Resveratrol, herbal nonflavonoid polyphenolic compound naturally derived from grapes, has long been acknowledged to possess extensive biological and pharmacological properties including antioxidant and anti-inflammatory ones and may exert a neuroprotective effect on neuronal damage in neurodegenerative diseases. However, the underlying molecular mechanisms remain undefined. In the present study, we intended to investigate the neuroprotective effects of resveratrol against 6-OHDA-induced neurotoxicity of PC12 cells and further explore the possible mechanisms involved. For this purpose, PC12 cells were exposed to 6-OHDA in the presence of resveratrol (0, 12.5, 25, and 50 μM). The results showed that resveratrol increased cell viability, alleviated the MMP reduction, and reduced the number of apoptotic cells as measured by MTT assay, JC-1 staining, and Hoechst/PI double staining (all p < 0.01). Immunofluorescent staining and Western blotting revealed that resveratrol averts 6-OHDA induced CXCR4 upregulation (p < 0.01). Our results demonstrated that resveratrol could effectively protect PC12 cells from 6-OHDA-induced oxidative stress and apoptosis via CXCR4 signaling pathway.
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83
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Venigalla M, Sonego S, Gyengesi E, Sharman MJ, Münch G. Novel promising therapeutics against chronic neuroinflammation and neurodegeneration in Alzheimer's disease. Neurochem Int 2015; 95:63-74. [PMID: 26529297 DOI: 10.1016/j.neuint.2015.10.011] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 10/23/2015] [Accepted: 10/24/2015] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder, characterized by deposition of amyloid plaques and neurofibrillary tangles, as well as microglial and astroglial activation, and, finally, leading to neuronal dysfunction and death. Current treatments for AD primarily focus on enhancement of cholinergic transmission. However, these treatments are only symptomatic, and no disease-modifying drug is available for the treatment of AD patients. This review will provide an overview of the antioxidant, anti-inflammatory, anti-amyloidogenic, neuroprotective, and cognition-enhancing effects of a variety of nutraceuticals including curcumin, apigenin, docosahexaenoic acid, epigallocatechin gallate, α-lipoic acid and resveratrol and their potential for AD prevention and treatment. We suggest that therapeutic use of these compounds might lead to a safe strategy to delay the onset of AD or slow down its progression. The continuing investigation of the potential of these substances is necessary as they are promising compounds to yield a possible remedy for this pervasive disease.
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Affiliation(s)
- Madhuri Venigalla
- Dept of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, Australia
| | - Sandra Sonego
- Dept of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, Australia
| | - Erika Gyengesi
- Dept of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, Australia; Molecular Medicine Research Group, Western Sydney University, Campbelltown, NSW, Australia
| | | | - Gerald Münch
- Dept of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, Australia; National Institute of Complementary Medicine, Western Sydney University, Campbelltown, NSW, Australia; Molecular Medicine Research Group, Western Sydney University, Campbelltown, NSW, Australia.
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84
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Kim SH, Adhikari BB, Cruz S, Schramm MP, Vinson JA, Narayanaswami V. Targeted intracellular delivery of resveratrol to glioblastoma cells using apolipoprotein E-containing reconstituted HDL as a nanovehicle. PLoS One 2015; 10:e0135130. [PMID: 26258481 PMCID: PMC4530947 DOI: 10.1371/journal.pone.0135130] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 07/18/2015] [Indexed: 11/23/2022] Open
Abstract
The objective of this study is to transport and deliver resveratrol to intracellular sites using apolipoprotein E3 (apoE3). Reconstituted high-density lipoprotein (rHDL) bearing resveratrol (rHDL/res) was prepared using phospholipids and the low-density lipoprotein receptor (LDLr)-binding domain of apoE3. Biophysical characterization revealed that resveratrol was partitioned into the phospholipid bilayer of discoidal rHDL/res particles (~19 nm diameter). Co-immunoprecipitation studies indicated that the LDLr-binding ability of apoE3 was retained. Cellular uptake of resveratrol to intracellular sites was evaluated in glioblastoma A-172 cells by direct fluorescence using chemically synthesized NBD-labeled resveratrol (res/NBD) embedded in rHDL/res. Competition and inhibition studies indicate that the uptake is by receptor mediated endocytosis via the LDLr, with co-localization of apoE3 and res/NBD in late endosomes/lysosomes. We propose that rHDL provides an ideal hydrophobic milieu to sequester resveratrol and that rHDL containing apoE3 serves as an effective “nanovehicle” to transport and deliver resveratrol to targeted intracellular sites.
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Affiliation(s)
- Sea H. Kim
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California, United States of America
| | - Birendra Babu Adhikari
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California, United States of America
| | - Siobanth Cruz
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California, United States of America
| | - Michael P. Schramm
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California, United States of America
| | - Joe A. Vinson
- Chemistry Department, Loyola Science Center, University of Scranton, Scranton, Pennsylvania, United States of America
| | - Vasanthy Narayanaswami
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California, United States of America
- * E-mail:
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85
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Hung VWS, Bressan LP, Seo K, Kerman K. Electroanalysis of Natural Compounds as Copper Chelating Agents for Alzheimer’s Disease Therapy. ELECTROANAL 2015. [DOI: 10.1002/elan.201500138] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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86
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Kim HG, Park G, Lim S, Park H, Choi JG, Jeong HU, Kang MS, Lee MK, Oh MS. Mori Fructus improves cognitive and neuronal dysfunction induced by beta-amyloid toxicity through the GSK-3β pathway in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2015; 171:196-204. [PMID: 26068423 DOI: 10.1016/j.jep.2015.05.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 05/30/2015] [Accepted: 05/31/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A growing body of literature supports the concept that antiaging herbs may be potential candidates for use in treating age-related neurodegeneration, including Alzheimer׳s disease (AD). Mori Fructus is a well-known traditional herbal medicine, food, and dietary supplement. This study employed models of amyloid beta (Aβ)-induced AD to investigate the protective effects of Mori Fructus ethanol extract (ME) against age-related disease and cognitive deficits. MATERIALS AND METHODS To examine the protective effect of ME, we measured cell viability, cytotoxicity, and survival in rat primary hippocampal cultures. We performed behavioral tests and histological analysis in mouse models of AD induced by Aβ(25-35) toxicity. To investigate the mechanism underlying the protective effect, we performed western blotting using antibodies against apoptotic markers as well as the nonphosphorylated and phosphorylated forms of Akt, glycogen synthase kinase-3β (GSK-3β), and tau. We also measured apoptotic marker fluorescence intensity. RESULTS ME significantly attenuated Aβ-induced cell damage, enhanced Akt and GSK-3β phosphorylation, and reduced tau phosphorylation. ME reduced apoptotic markers that were activated by GSK-3β, and reduced reactive oxygen species production. Further, ME decreased the B-cell lymphoma 2 (Bcl-2)/Bcl-2-associated X expression ratio, mitochondria depolarization, cytochrome c release from mitochondria, and caspase-3 activation. We confirmed that ME treatment improved cognitive impairment and neuronal cell death induced by Aβ(25-35) toxicity in the mouse hippocampus via its antiapoptotic activity. CONCLUSIONS These results indicate that ME protects cognition and neurons in AD-like models induced by Aβ via reduction of tau phosphorylation and apoptosis through GSK-3β inactivation.
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Affiliation(s)
- Hyo Geun Kim
- College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea; Department of Life and Nanopharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Gunhyuk Park
- Department of Life and Nanopharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Soonmin Lim
- Department of Life and Nanopharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Hanbyeol Park
- Department of Life and Nanopharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Jin Gyu Choi
- College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Hyun Uk Jeong
- College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Min Seo Kang
- College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Cheongju 361-763, Republic of Korea
| | - Myung Sook Oh
- College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea; Department of Life and Nanopharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
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Tellone E, Galtieri A, Russo A, Giardina B, Ficarra S. Resveratrol: A Focus on Several Neurodegenerative Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:392169. [PMID: 26180587 PMCID: PMC4477222 DOI: 10.1155/2015/392169] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 12/19/2014] [Accepted: 12/26/2014] [Indexed: 01/25/2023]
Abstract
Molecules of the plant world are proving their effectiveness in countering, slowing down, and regressing many diseases. The resveratrol for its intrinsic properties related to its stilbene structure has been proven to be a universal panacea, especially for a wide range of neurodegenerative diseases. This paper evaluates (in vivo and in vitro) the various molecular targets of this peculiar polyphenol and its ability to effectively counter several neurodegenerative disorders such as Parkinson's, Alzheimer's, and Huntington's diseases and amyotrophic lateral sclerosis. What emerges is that, in the deep heterogeneity of the pathologies evaluated, resveratrol through a convergence on the protein targets is able to give therapeutic responses in neuronal cells deeply diversified not only in morphological structure but especially in their function performed in the anatomical district to which they belong.
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Affiliation(s)
- Ester Tellone
- Department of Chemical Sciences, University of Messina, V. le Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Antonio Galtieri
- Department of Chemical Sciences, University of Messina, V. le Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Annamaria Russo
- Department of Chemical Sciences, University of Messina, V. le Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Bruno Giardina
- Biochemistry and Clinical Biochemistry Institute, School of Medicine, Catholic University, L. go F. Vito n.1, 00168 Rome, Italy
- C.N.R. Institute of Chemistry of Molecular Recognition, L. go F. Vito n.1, 00168 Rome, Italy
| | - Silvana Ficarra
- Department of Chemical Sciences, University of Messina, V. le Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
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88
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Chang YP, Ka SM, Hsu WH, Chen A, Chao LK, Lin CC, Hsieh CC, Chen MC, Chiu HW, Ho CL, Chiu YC, Liu ML, Hua KF. Resveratrol inhibits NLRP3 inflammasome activation by preserving mitochondrial integrity and augmenting autophagy. J Cell Physiol 2015; 230:1567-79. [PMID: 25535911 DOI: 10.1002/jcp.24903] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 12/18/2014] [Indexed: 12/12/2022]
Abstract
The NLRP3 inflammasome is a caspase-1-containing multi-protein complex that controls the release of IL-1β and plays important roles in the development of inflammatory disease. Here, we report that resveratrol, a polyphenolic compound naturally produced by plants, inhibits NLRP3 inflammasome-derived IL-1β secretion and pyroptosis in macrophages. Resveratrol inhibits the activation step of the NLRP3 inflammasome by suppressing mitochondrial damage. Resveratrol also induces autophagy by activating p38, and macrophages treated with an autophagy inhibitor are resistant to the suppressive effects of resveratrol. In addition, resveratrol administration mitigates glomerular proliferation, glomerular sclerosis, and glomerular inflammation in a mouse model of progressive IgA nephropathy. These findings were associated with decreased renal mononuclear leukocyte infiltration, reduced renal superoxide anion levels, and inhibited renal NLRP3 inflammasome activation. Our data indicate that resveratrol suppresses NLRP3 inflammasome activation by preserving mitochondrial integrity and by augmenting autophagy.
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Affiliation(s)
- Ya-Ping Chang
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
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Wu H, Wang H, Zhang W, Wei X, Zhao J, Yan P, Liu C. rhEPO affects apoptosis in hippocampus of aging rats by upregulating SIRT1. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:6870-6880. [PMID: 26261574 PMCID: PMC4525908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 05/20/2015] [Indexed: 06/04/2023]
Abstract
The aim of this study was to elucidate the signaling pathway involved in the anti-aging effect of erythropoietin (EPO) and to clarify whether recombinant human EPO (rhEPO) affects apoptosis in the aging rat hippocampus by upregulating Sirtuin 1 (SIRT1). In this study, a rat model of aging was established using D-galactose. Behavioral changes were monitored by the Morris water maze test. Using immunohistochemistry, we studied the expression of SIRT1, B-cell lymphoma/leukemia-2 gene (Bcl-2), and Bcl-2 associated X protein (Bax) expression, and apoptotic cells in the hippocampus of a rat model of aging in which rhEPO was intraperitoneally injected. The escape latency in rats from the EPO group shortened significantly; however, the number of platform passes increased significantly from that in the D-gal group (P < 0.05). Compared to the D-gal group, in the EPO group, the number of SIRT1 and Bcl-2-positive cells increased (P < 0.05), but the number of Bax-positive cells and apoptotic cells decreased in the hippocampus of aging rats (P < 0.05). These results suggest that rhEPO regulates apoptosis-related genes and affects apoptosis in the hippocampus of aging rats by upregulating SIRT. This may be one of the important pathways underlying the anti-aging property of EPO.
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Affiliation(s)
- Haiqin Wu
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
| | - Huqing Wang
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
| | - Wenting Zhang
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
| | - Xuanhui Wei
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
| | - Jiaxin Zhao
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
| | - Pu Yan
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
| | - Chao Liu
- Department of Neurology, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710004, China
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Li G, Xu X, Xu K, Chu F, Song J, Zhou S, Xu B, Gong Y, Zhang H, Zhang Y, Wang P, Lei H. Ligustrazinyl amides: a novel class of ligustrazine-phenolic acid derivatives with neuroprotective effects. Chem Cent J 2015; 9:9. [PMID: 25810760 PMCID: PMC4372684 DOI: 10.1186/s13065-015-0084-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 12/22/2014] [Indexed: 02/05/2023] Open
Abstract
Background Ligustrazine has potent effects of thrombolysis, neuroprotection and vascular protection, which were important for effectively protecting the nervous system. Previous study in our laboratory reported that ligustrazine-benzoic acid derivatives have been shown to exhibit beneficial effect against CoCl2-induced neurotoxicity in differentiated PC12 cells. To further improve ligustrazine’s neuroprotection, we integrated the ligustrazine and phenolic acid fragments into one molecule via an amide bond based on structural combination. Results In this study, 12 novel ligustrazine-phenolic acid derivatives were synthesized and nine others were prepared by improved methods. Furthermore, these compounds were evaluated for their protective effects against CoCl2-induced neurotoxicity in differentiated PC12 cells. The amides conjunctional derivatives exhibited promising neuroprotective activities in comparison with ligustrazine. In addition, the most active congener (E)-3-(2,3,4-trimethoxyphenyl)-N-((3,5,6-trimethylpyrazin-2-yl)methyl)acrylamide (L10, EC50 = 25 μM), which is 2 times higher than that of ligustrazine, may be a potential candidate for intervention in neurological diseases. Structure-activity relationship was discussed briefly. Conclusions Results of series of ligustrazinyl amides enrich the study of ligustrazine derivatives with neuroprotective effects. Our completed work supports that the attempt to apply structure combination to discover more efficient neuroprotection lead compounds is viable. Ligustrazinyl Amides L1-L21 with Neuroprotective Effects. ![]()
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Affiliation(s)
- Guoliang Li
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Xin Xu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Kuo Xu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Fuhao Chu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Jixiang Song
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Shen Zhou
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Bing Xu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Yan Gong
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Huazheng Zhang
- Department of Pathology, Beijing University of Chinese Medicine, No.11 North Third Ring Road, Beijing, Chaoyang District China
| | - Yuzhong Zhang
- Department of Pathology, Beijing University of Chinese Medicine, No.11 North Third Ring Road, Beijing, Chaoyang District China
| | - Penglong Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
| | - Haimin Lei
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, No.6 Wangjing Middle Ring South Road, Beijing, Chaoyang District China
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91
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Xu YQ, Sun ZQ, Wang YT, Xiao F, Chen MW. Function of Nogo-A/Nogo-A receptor in Alzheimer's disease. CNS Neurosci Ther 2015; 21:479-85. [PMID: 25732725 DOI: 10.1111/cns.12387] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 01/01/2015] [Accepted: 01/02/2015] [Indexed: 12/11/2022] Open
Abstract
Nogo-A is a protein inhibiting axonal regeneration, which is considered a major obstacle to nerve regeneration after injury in mammals. Rapid progress has been achieved in new physiopathological function of Nogo-A in Alzheimer's disease in the past decade. Recent research shows that through binding to Nogo-A receptor, Nogo-A plays an important role in Alzheimer's disease (AD) pathogenesis. Particularly, Nogo-A/Nogo-A receptors modulate the generation of amyloid β-protein (Aβ), which is thought to be a major cause of AD. This review describes the recent development of Nogo-A, Nogo-A receptor, and downstream signaling involved in AD and pharmacological basis of therapeutic drugs. We concluded the Nogo-A/Nogo-A receptor provide new insight into potential mechanisms and promising therapy strategies in AD.
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Affiliation(s)
- Ying-Qi Xu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Zhong-Qing Sun
- Department of Pharmacology, School of Medicine, Jinan University, Guangzhou, China
| | - Yi-Tao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Fei Xiao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China.,Department of Pharmacology, School of Medicine, Jinan University, Guangzhou, China
| | - Mei-Wan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
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92
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ur Rasheed MS, Tripathi MK, Mishra AK, Shukla S, Singh MP. Resveratrol Protects from Toxin-Induced Parkinsonism: Plethora of Proofs Hitherto Petty Translational Value. Mol Neurobiol 2015; 53:2751-2760. [DOI: 10.1007/s12035-015-9124-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 02/04/2015] [Indexed: 12/21/2022]
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93
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Wang ZG, Yang C, Zhu B, Hua F. AMPK-Dependent Autophagic Activation Is Probably Involved in the Mechanism of Resveratrol Exerting Therapeutic Effects for Alzheimer's Disease. Rejuvenation Res 2015; 18:101-2. [PMID: 25496421 DOI: 10.1089/rej.2014.1652] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Zhi-Gang Wang
- Department of Endocrinology, The Third Affiliated Hospital of SooChow University, Changzhou, PR China
| | - Chun Yang
- Department of Endocrinology, The Third Affiliated Hospital of SooChow University, Changzhou, PR China
| | - Bin Zhu
- Department of Endocrinology, The Third Affiliated Hospital of SooChow University, Changzhou, PR China
| | - Fei Hua
- Department of Endocrinology, The Third Affiliated Hospital of SooChow University, Changzhou, PR China
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Ai Z, Li C, Li L, He G. Resveratrol inhibits β-amyloid-induced neuronal apoptosis via regulation of p53 acetylation in PC12 cells. Mol Med Rep 2014; 11:2429-34. [PMID: 25483559 PMCID: PMC4337594 DOI: 10.3892/mmr.2014.3034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 10/24/2014] [Indexed: 01/11/2023] Open
Abstract
The natural product resveratrol possesses diverse biological activities, including anti-inflammatory, anti-oxidant, anti-cancer and anti-aging effects in multiple organisms. The neuroprotective role of resveratrol has recently been reported in a cell model of amyloid (A)β(25–35)-induced neurotoxic injury using PC12 cells. However, the pathomechanism by which resveratrol inhibits neuronal apoptosis has remained to be elucidated. The present study therefore aimed to confirm the neuroprotective effects of resveratrol in an Aβ(25–35)-induced model of neurotoxicity in PC12 cells and elucidate the mechanisms underlying these effects. It was demonstrated that resveratrol exerted neuronal protection through inhibition of cell apoptosis, which was associated with an increased acetylation level of p53. In accordance with this effect, when the acetylation level of p53 was decreased by p53 acetylation inhibitor pifithrin-α, the protective effects of resveratrol were abrogated. In conclusion, it was revealed that resveratrol inhibited Aβ(25–35)-induced cell apoptosis via the acetylation of p53 in PC12 cells.
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Affiliation(s)
- Zhibing Ai
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Chengyan Li
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Longti Li
- Department of Neurology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Guohou He
- Department of Neurology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
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95
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Resveratrol and its oligomers: modulation of sphingolipid metabolism and signaling in disease. Arch Toxicol 2014; 88:2213-32. [PMID: 25344023 DOI: 10.1007/s00204-014-1386-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 10/08/2014] [Indexed: 01/10/2023]
Abstract
Resveratrol, a natural compound endowed with multiple health-promoting effects, has received much attention given its potential for the treatment of cardiovascular, inflammatory, neurodegenerative, metabolic and age-related diseases. However, the translational potential of resveratrol has been limited by its specificity, poor bioavailability and uncertain toxicity. In recent years, there has been an accumulation of evidence demonstrating that resveratrol modulates sphingolipid metabolism. Moreover, resveratrol forms higher order oligomers that exhibit better selectivity and potency in modulating sphingolipid metabolism. This review evaluates the evidence supporting the modulation of sphingolipid metabolism and signaling as a mechanism of action underlying the therapeutic efficacy of resveratrol and oligomers in diseases, such as cancer.
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96
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Zhao F, Zhao W, Ren S, Fu Y, Fang X, Wang X, Li B. Roles of SIRT1 in granulosa cell apoptosis during the process of follicular atresia in porcine ovary. Anim Reprod Sci 2014; 151:34-41. [PMID: 25455260 DOI: 10.1016/j.anireprosci.2014.10.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 09/04/2014] [Accepted: 10/03/2014] [Indexed: 12/12/2022]
Abstract
Ovarian follicular atresia is characterized by granulosa cell apoptosis, however, the exact mechanism is still unclear. Sirtuin 1 (SIRT1) is a NAD(+)-dependent deacetylase, which is associated with apoptosis in several of cell types, but its exact role in ovarian granulosa cell apoptosis is not clearly defined. In present study, we identified the involvement of SIRT1 in the process of follicle degeneration, which is known as "follicular atresia", both from in vivo models and cell culture data. The results of immunohistochemistry showed that SIRT1 was widely detected in non-apoptotic granulosa cells of follicles, but significantly decreased during the process of granulosa cell apoptosis. Quantitative real-time PCR and Western blot analysis showed that the expression levels of SIRT1 mRNA and protein were increased (P<0.05) during follicular atresia. In order to provide more evidences elucidating the roles of SIRT1 during the process of follicular atresia, granulosa cells were cultured in vitro with resveratrol which acts as a potent activator of SIRT1. Results showed that resveratrol caused a dose-dependent increase in both SIRT1 mRNA and protein levels. Meanwhile, apoptotic rate of granulosa cell was increased (P<0.01) in a dose-dependent manner. Additionally, resveratrol significantly increased the expression levels of Caspase-3 (P<0.01) and Bax mRNA (P<0.01), while Bcl-2 mRNA level was significantly decreased (P<0.01). Thus, our results suggest that SIRT1 may play important roles in the regulation of granulosa cell apoptosis during follicular atresia in porcine ovary.
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Affiliation(s)
- Fang Zhao
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Weimin Zhao
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Shouwen Ren
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yanfeng Fu
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Xiaomin Fang
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Xuemin Wang
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Bixia Li
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
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97
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Rege SD, Geetha T, Griffin GD, Broderick TL, Babu JR. Neuroprotective effects of resveratrol in Alzheimer disease pathology. Front Aging Neurosci 2014; 6:218. [PMID: 25309423 PMCID: PMC4161050 DOI: 10.3389/fnagi.2014.00218] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 08/04/2014] [Indexed: 01/11/2023] Open
Abstract
Alzheimer's disease is a chronic neurodegenerative disorder characterized by a progressive loss of cognitive and behavioral abilities. Extracellular senile plaques and intracellular neurofibrillary tangles are hallmarks of AD. Researchers aim to analyze the molecular mechanisms underlying AD pathogenesis; however, the therapeutic options available to treat this disease are inadequate. In the past few years, several studies have reported interesting insights about the neuroprotective properties of the polyphenolic compound resveratrol (3, 5, 4'-trihydroxy-trans-stilbene) when used with in vitro and in vivo models of AD. The aim of this review is to focus on the neuroprotective and antioxidant effects of resveratrol on AD and its multiple potential mechanisms of action. In addition, because the naturally occurring forms of resveratrol have a very limited half-life in plasma, a description of potential analogs aimed at increasing the bioavailability in plasma is also discussed.
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Affiliation(s)
- Shraddha D Rege
- Department of Nutrition, Dietetics, and Hospitality Management, Auburn University Auburn, AL, USA
| | - Thangiah Geetha
- Department of Chemistry, Auburn University at Montgomery Montgomery, AL, USA
| | - Gerald D Griffin
- Department of Biology, Tuskegee Institute, Tuskegee University AL, USA
| | - Tom L Broderick
- Laboratory of Diabetes and Exercise Metabolism, Department of Physiology, Midwestern University Glendale, AZ, USA
| | - Jeganathan Ramesh Babu
- Department of Nutrition, Dietetics, and Hospitality Management, Auburn University Auburn, AL, USA
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98
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Wang C, Xie N, Zhang H, Li Y, Wang Y. Puerarin protects against β-amyloid-induced microglia apoptosis via a PI3K-dependent signaling pathway. Neurochem Res 2014; 39:2189-96. [PMID: 25173404 DOI: 10.1007/s11064-014-1420-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 07/17/2014] [Accepted: 08/13/2014] [Indexed: 11/26/2022]
Abstract
Puerarin extracted from Radix puerariae is well-known for its anti-oxidative and neuroprotective activities. In this study, we investigated the protective effect of puerarin on amyloid-β protein (Aβ)-induced cytotoxicity and its potential mechanisms in BV-2 and primary microglial cells. We found that pretreatment with puerarin afforded protection against Aβ-induced cytotoxicity through inhibiting apoptosis in BV-2 and primary microglial cells. This result was also confirmed by the activated caspase-3 assay. Phospho-Akt and Bcl-2 expression increased after pretreatment with puerarin in BV-2 and primary microglial cells exposed to Aβ, whereas Bax expression and cytochrome c release decreased. In addition, puerarin treatment prevented the loss of mitochondrial membrane potential and reactive oxygen species production. Interestingly, these effects of puerarin against Aβ insult were abolished by LY294002, an inhibitor of PI3K phosphorylation. Taken together, these findings suggest that puerarin prevents Aβ-induced microglial apoptosis via the activation of PI3K/Akt signaling pathway, and might be a potential preventive or therapeutic agent for Alzheimer's disease.
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Affiliation(s)
- Cui Wang
- Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
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99
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Esmaeili MA, Farimani MM, Kiaei M. Anticancer effect of calycopterin via PI3K/Akt and MAPK signaling pathways, ROS-mediated pathway and mitochondrial dysfunction in hepatoblastoma cancer (HepG2) cells. Mol Cell Biochem 2014; 397:17-31. [PMID: 25060910 DOI: 10.1007/s11010-014-2166-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 07/14/2014] [Indexed: 01/14/2023]
Abstract
Calycopterin is a flavonoid compound isolated from Dracocephalum kotschyi that has multiple medical uses, as an antispasmodic, analgesic, anti-hyperlipidemic, and immunomodulatory agents. However, its biological activity and the mechanism of action are poorly investigated. Herein, we investigated the apoptotic effect of calycopterin against the human hepatoblastoma cancer cell (HepG2) line. We discovered that calycopterin-treated HepG2 cells were killed off by apoptosis in a dose-dependent manner within 24 h, and was characterized by the appearance of nuclear shrinkage, cleavage of poly (ADP-ribose) polymerase and DNA fragmentation. Calycopterin treatment also affected HepG2 cell viability: (a) by inhibiting cell cycle progression at the G2/M transition leading to growth arrest and apoptosis; (b) by decreasing the expression of mitotic kinase cdc2, mitotic phosphatase cdc25c, mitotic cyclin B1, and apoptotic factors pro-caspases-3 and -9; and (c) increasing the levels of mitochondrial apoptotic-related proteins, intracellular levels of reactive oxygen species, and nitric oxide. We further examined the phosphorylation of extracellular signal-related kinase (ERK 1/2), c-Jun N-terminal kinase, and p-38 mitogen-activated protein kinases (MAPKs) and found they all were significantly increased in HepG2 cells treated with calycopterin. Interestingly, we discovered that treated cells had significantly lower Akt phosphorylation. This mode of action for calycopterin in our study provides strong support that inhibition of PI3K/Akt and activation of MAPKs are pivotal in G2/M cell cycle arrest and apoptosis of human hepatocarcinoma cells mediated by calycopterin.
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Affiliation(s)
- Mohammad Ali Esmaeili
- Medicinal Plants and Drug Research Institute, Shahid Beheshti University G. C., Tehran, Iran,
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100
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Abstract
INTRODUCTION It is assumed that epigenetic modifications are reversible and could potentially be targeted by pharmacological and dietary interventions. Epigenetic drugs are gaining particular interest as potential candidates for the treatment of Alzheimer's disease (AD). AREAS COVERED This article covers relevant information from over 50 different epigenetic drugs including: DNA methyltransferase inhibitors; histone deacetylase inhibitors; histone acetyltransferase modulators; histone methyltransferase inhibitors; histone demethylase inhibitors; non-coding RNAs (microRNAs) and dietary regimes. The authors also review the pharmacoepigenomics and the pharmacogenomics of epigenetic drugs. The readers will gain insight into i) the classification of epigenetic drugs; ii) the mechanisms by which these drugs might be useful in AD; iii) the pharmacological properties of selected epigenetic drugs; iv) pharmacoepigenomics and the influence of epigenetic drugs on genes encoding CYP enzymes, transporters and nuclear receptors; and v) the genes associated with the pharmacogenomics of anti-dementia drugs. EXPERT OPINION Epigenetic drugs reverse epigenetic changes in gene expression and might open future avenues in AD therapeutics. Unfortunately, clinical trials with this category of drugs are lacking in AD. The authors highlight the need for pharmacogenetic and pharmacoepigenetic studies to properly evaluate any efficacy and safety issues.
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Affiliation(s)
- Ramón Cacabelos
- Professor,Camilo José Cela University, Chair of Genomic Medicine , Madrid , Spain
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