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Taghizadeh Ghassab F, Shamlou Mahmoudi F, Taheri Tinjani R, Emami Meibodi A, Zali MR, Yadegar A. Probiotics and the microbiota-gut-brain axis in neurodegeneration: Beneficial effects and mechanistic insights. Life Sci 2024; 350:122748. [PMID: 38843992 DOI: 10.1016/j.lfs.2024.122748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/21/2024] [Accepted: 05/23/2024] [Indexed: 06/10/2024]
Abstract
Neurodegenerative diseases (NDs) are a group of heterogeneous disorders with a high socioeconomic burden. Although pharmacotherapy is currently the principal therapeutic approach for the management of NDs, mounting evidence supports the notion that the protracted application of available drugs would abate their dopaminergic outcomes in the long run. The therapeutic application of microbiome-based modalities has received escalating attention in biomedical works. In-depth investigations of the bidirectional communication between the microbiome in the gut and the brain offer a multitude of targets for the treatment of NDs or maximizing the patient's quality of life. Probiotic administration is a well-known microbial-oriented approach to modulate the gut microbiota and potentially influence the process of neurodegeneration. Of note, there is a strong need for further investigation to map out the mechanistic prospects for the gut-brain axis and the clinical efficacy of probiotics. In this review, we discuss the importance of microbiome modulation and hemostasis via probiotics, prebiotics, postbiotics and synbiotics in ameliorating pathological neurodegenerative events. Also, we meticulously describe the underlying mechanism of action of probiotics and their metabolites on the gut-brain axis in different NDs. We suppose that the present work will provide a functional direction for the use of probiotic-based modalities in promoting current practical treatments for the management of neurodegenerative-related diseases.
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Affiliation(s)
- Fatemeh Taghizadeh Ghassab
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Shamlou Mahmoudi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reyhaneh Taheri Tinjani
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Armitasadat Emami Meibodi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Sedik AA, Hussein DT, Fathy K, Mowaad NA. Neuroprotective and cognitive enhancing effects of herbecetin against thioacetamide induced hepatic encephalopathy in rats via upregulation of AMPK and SIRT1 signaling pathways. Sci Rep 2024; 14:11396. [PMID: 38762495 PMCID: PMC11102433 DOI: 10.1038/s41598-024-61639-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 05/08/2024] [Indexed: 05/20/2024] Open
Abstract
Acute liver injury, there is a risky neurological condition known as hepatic encephalopathy (HE). Herbacetin is a glycosylated flavonoid with many pharmacological characteristics. The purpose of this study was to assess the ability of herbacetin to protect against the cognitive deficits associated with thioacetamide (TAA) rat model and delineate the underlying behavioral and pharmacological mechanisms. Rats were pretreated with herbacetin (20 and 40 mg/kg) for 30days. On 30th day, the rats were injected with TAA (i.p. 350 mg/kg) in a single dose. In addition to a histpathological studies, ultra-structural architecture of the brain, liver functions, oxidative stress biomarkers, and behavioral tests were evaluated. Compared to the TAA-intoxicated group, herbacetin improved the locomotor and cognitive deficits, serum hepatotoxicity indices and ammonia levels. Herbacetin reduced brain levels of malodialdeyde, glutamine synthetase (GS), tumor necrosis factor- alpha (TNF-α), interleukin 1 B (IL-1β), annexin v, and increased brain GSH, Sirtuin 1 (SIRT1), and AMP-activated kinase (AMPK) expression levels. Also, herbacetin improve the histopathological changes and ultra- structure of brain tissue via attenuating the number of inflammatory and apoptotic cells. Herbacetin treatment significantly reduced the toxicity caused by TAA. These findings suggest that herbacetin might be taken into account as a possible neuroprotective and cognitive enhancing agent due to its ability to reduce oxidative stress, inflammation and apoptosis associated with TAA.
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Affiliation(s)
- Ahmed A Sedik
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki, Cairo, 12622, Egypt
| | - Dalia T Hussein
- Fellow of Biochemistry, Children Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Khaled Fathy
- Electron Microscopy Unit, Mansoura University, El Mansoura, 35516, Egypt
| | - Noha A Mowaad
- Narcotics, Ergogenics and Poisons Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki, Cairo, 12622, Egypt.
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Bartra C, Yuan Y, Vuraić K, Valdés-Quiroz H, Garcia-Baucells P, Slevin M, Pastorello Y, Suñol C, Sanfeliu C. Resveratrol Activates Antioxidant Protective Mechanisms in Cellular Models of Alzheimer's Disease Inflammation. Antioxidants (Basel) 2024; 13:177. [PMID: 38397775 PMCID: PMC10886200 DOI: 10.3390/antiox13020177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Resveratrol is a natural phenolic compound with known benefits against neurodegeneration. We analyzed in vitro the protective mechanisms of resveratrol against the proinflammatory monomeric C-reactive protein (mCRP). mCRP increases the risk of AD after stroke and we previously demonstrated that intracerebral mCRP induces AD-like dementia in mice. Here, we used BV2 microglia treated with mCRP for 24 h in the presence or absence of resveratrol. Cells and conditioned media were collected for analysis. Lipopolysaccharide (LPS) has also been implicated in AD progression and so LPS was used as a resveratrol-sensitive reference agent. mCRP at the concentration of 50 µg/mL activated the nitric oxide pathway and the NLRP3 inflammasome pathway. Furthermore, mCRP induced cyclooxygenase-2 and the release of proinflammatory cytokines. Resveratrol effectively inhibited these changes and increased the expression of the antioxidant enzyme genes Cat and Sod2. As central mechanisms of defense, resveratrol activated the hub genes Sirt1 and Nfe2l2 and inhibited the nuclear translocation of the signal transducer NF-ĸB. Proinflammatory changes induced by mCRP in primary mixed glial cultures were also protected by resveratrol. This work provides a mechanistic insight into the protective benefits of resveratrol in preventing the risk of AD induced by proinflammatory agents.
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Affiliation(s)
- Clara Bartra
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (DIBAPS), 08036 Barcelona, Spain
- PhD Program in Biotechnology, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08034 Barcelona, Spain
| | - Yi Yuan
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
| | - Kristijan Vuraić
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
| | - Haydeé Valdés-Quiroz
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
| | - Pau Garcia-Baucells
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
| | - Mark Slevin
- School of Life Sciences, John Dalton Building, Manchester Metropolitan University, Manchester M15 6BH, UK;
- Centru Avansat de Cercetari Medicale si Farmaceutice (CCAMF), Universitatea de Medicina, Farmacie, Stiinte si Tehnologie “George Emil Palade” din Targu Mures, 540142 Targu Mures, Romania
| | - Ylenia Pastorello
- Department of Anatomy and Embryology, Universitatea de Medicina, Farmacie, Stiinte si Tehnologie “George Emil Palade” din Targu Mures, 540142 Targu Mures, Romania;
| | - Cristina Suñol
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (DIBAPS), 08036 Barcelona, Spain
| | - Coral Sanfeliu
- Institut d’Investigacions Biomèdiques de Barcelona (IIBB), CSIC, 08036 Barcelona, Spain; (C.B.); (Y.Y.); (K.V.); (H.V.-Q.); (P.G.-B.); (C.S.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (DIBAPS), 08036 Barcelona, Spain
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Culibrk RA, Ebbert KA, Yeisley DJ, Chen R, Qureshi FA, Hahn J, Hahn MS. Impact of Suramin on Key Pathological Features of Sporadic Alzheimer's Disease-Derived Forebrain Neurons. J Alzheimers Dis 2024; 98:301-318. [PMID: 38427475 DOI: 10.3233/jad-230600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Background Alzheimer's disease (AD) is characterized by disrupted proteostasis and macroautophagy (hereafter "autophagy"). The pharmacological agent suramin has known autophagy modulation properties with potential efficacy in mitigating AD neuronal pathology. Objective In the present work, we investigate the impact of forebrain neuron exposure to suramin on the Akt/mTOR signaling pathway, a major regulator of autophagy, in comparison with rapamycin and chloroquine. We further investigate the effect of suramin on several AD-related biomarkers in sporadic AD (sAD)-derived forebrain neurons. Methods Neurons differentiated from ReNcell neural progenitors were used to assess the impact of suramin on the Akt/mTOR signaling pathway relative to the autophagy inducer rapamycin and autophagy inhibitor chloroquine. Mature forebrain neurons were differentiated from induced pluripotent stem cells (iPSCs) sourced from a late-onset sAD patient and treated with 100μM suramin for 72 h, followed by assessments for amyloid-β, phosphorylated tau, oxidative/nitrosative stress, and synaptic puncta density. Results Suramin treatment of sAD-derived neurons partially ameliorated the increased p-Tau(S199)/Tau ratio, and fully remediated the increased glutathione to oxidized nitric oxide ratio, observed in untreated sAD-derived neurons relative to healthy controls. These positive results may be due in part to the distinct increases in Akt/mTOR pathway mediator p-p70S6K noted with suramin treatment of both ReNcell-derived and iPSC-derived neurons. Longer term neuronal markers, such as synaptic puncta density, were unaffected by suramin treatment. Conclusions These findings provide initial evidence supporting the potential of suramin to reduce the degree of dysregulation in sAD-derived forebrain neurons in part via the modulation of autophagy.
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Affiliation(s)
- Robert A Culibrk
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Katherine A Ebbert
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Daniel J Yeisley
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Rui Chen
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Fatir A Qureshi
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Juergen Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
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Dong YT, Cao K, Xiang J, Qi XL, Xiao Y, Yu WF, He Y, Hong W, Guan ZZ. Resveratrol Attenuates the Disruption of Lipid Metabolism Observed in Amyloid Precursor Protein/Presenilin 1 Mouse Brains and Cultured Primary Neurons Exposed to Aβ. Neuroscience 2023; 521:134-147. [PMID: 37142180 DOI: 10.1016/j.neuroscience.2023.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 04/19/2023] [Accepted: 04/25/2023] [Indexed: 05/06/2023]
Abstract
To examine whether resveratrol (RSV), an activator of silent mating-type information regulation 2 homolog 1 (SIRT1), can reverse the disruption of lipid metabolism caused by β-amyloid peptide (Aβ), APP/PS1 mice or cultured primary rat neurons were treated with RSV, suramin (inhibitor of SIRT1), ZLN005, a stimulator of peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α), or PGC-1α silencing RNA. In the brains of the APP/PS1 mice, expressions of SIRT1, PGC-1α, low-density lipoprotein receptor (LDLR) and very LDLR (VLDLR) were reduced at the protein and, in some cases, mRNA levels; while the levels of the proprotein convertase subtilisin/kexin type 9 (PCSK9), apolipoprotein E (ApoE), total cholesterol and LDL were all elevated. Interestingly, these changes were reversed by administration of RSV, while being aggravated by suramin. Furthermore, activation of PGC-1α, but inhibition of SIRT1, decreased the levels of PCSK9 and ApoE, while increased those of LDLR and VLDLR in the neurons exposed to Aβ, and silencing PGC-1α, but activation of SIRT1, did not influence the levels of any of these proteins. These findings indicate that RSV can attenuate the disruption of lipid metabolism observed in the brains of APP mice and in primary neurons exposed to Aβ by activating SIRT1, in which the mechanism may involve subsequently affecting PGC-1α.
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Affiliation(s)
- Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China; Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Kun Cao
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Jie Xiang
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Yan Xiao
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Wen-Feng Yu
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Yan He
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Zhi-Zhong Guan
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China; Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China.
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Xiong W, Li D, Feng Y, Jia C, Zhang X, Liu Z. CircLPAR1 Promotes Neuroinflammation and Oxidative Stress in APP/PS1 Mice by Inhibiting SIRT1/Nrf-2/HO-1 Axis Through Destabilizing GDF-15 mRNA. Mol Neurobiol 2023; 60:2236-2251. [PMID: 36646968 DOI: 10.1007/s12035-022-03177-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 12/16/2022] [Indexed: 01/18/2023]
Abstract
Circular RNA LPAR1 (circLPAR1) was revealed to be elevated in Alzheimer's disease (AD); nevertheless, its role and mechanisms in AD remain unknown. Memory performance of APP/PS1 mice was assessed by Morris water maze test. Expression of circLPAR1 and indicated messenger RNA (mRNA) in mouse brain tissues or/and SH-SY5Y cells were tested by quantitative real-time PCR (qRT-PCR). Protein expression of indicated gene was examined by western blot. Production of proinflammatory cytokines (tumor necrosis factor-α, TNF-α; interleukin-6, IL-6; interleukin-1β, IL-1β; and interleukin-8, IL-8) and oxidative stress-related factors (reactive oxygen species, ROS; malondialdehyde, MDA; superoxide dismutase, SOD; and glutathione, GSH) were assessed by commercial kits. RNA pull down and RNA immunoprecipitation were performed to verify the interplay between up-frameshift protein 1 (UPF1) and circLPAR1 or growth differentiation factor 15 (GDF-15). CircLPAR1 was elevated, while GDF-15 was decreased in both APP/PS1 mice and Aβ-treated SH-SY5Y cells. Knockdown of circLPAR1 and overexpression of GDF-15 protected cells against Aβ-caused inflammation, oxidative stress, and neuronal apoptosis. CircLPAR1 knockdown was also proved to improve AD-related pathological traits and ameliorate cognitive dysfunctions in vivo. In mechanism, we found that circLPAR1 repressed GDF-15 expression by decreasing GDF-15 mRNA stability through UPF1 recruitment. Rescue assays suggested that sirtuin 1 (SIRT1) knockdown reversed GDF-15 overexpression-induced inhibition on Aβ-induced neuronal damage and nuclear factor E2-related factor (Nrf-2)/heme oxygenase-1 (HO-1) pathway inhibition. Moreover, the protective effect of circLPAR1 knockdown against Aβ-induced apoptosis was abolished by GDF-15 knockdown, and SIRT1 overexpression could counteract this effect of GDF-15 knockdown. CircLPAR1 knockdown improved AD-related pathological traits in vitro and in vivo by inhibiting SIRT1/Nrf-2/HO-1 axis through GDF-15.
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Affiliation(s)
- Wenping Xiong
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Dongming Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Yu Feng
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Chenguang Jia
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Xiangyu Zhang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Zheng Liu
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China.
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Therapeutic potential of natural molecules against Alzheimer's disease via SIRT1 modulation. Biomed Pharmacother 2023; 161:114474. [PMID: 36878051 DOI: 10.1016/j.biopha.2023.114474] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/06/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease mainly characterized by progressive cognitive dysfunction and memory impairment. Recent studies have shown that regulating silent information regulator 1 (SIRT1) expression has a significant neuroprotective effect, and SIRT1 may become a new therapeutic target for AD. Natural molecules are an important source of drug development for use in AD therapy and may regulate a wide range of biological events by regulating SIRT1 as well as other SIRT1-mediated signaling pathways. This review aims to summarize the correlation between SIRT1 and AD and to identify in vivo and in vitro studies investigating the anti-AD properties of natural molecules as modulators of SIRT1 and SIRT1-mediated signaling pathways. A literature search was conducted for studies published between January 2000 and October 2022 using various literature databases, including Web of Science, PubMed, Google Scholar, Science Direct, and EMBASE. Natural molecules, such as resveratrol, quercetin, icariin, bisdemethoxycurcumin, dihydromyricetin, salidroside, patchouli, sesamin, rhein, ligustilide, tetramethoxyflavanone, 1-theanine, schisandrin, curcumin, betaine, pterostilbene, ampelopsin, schisanhenol, and eriodictyol, have the potential to modulate SIRT1 and SIRT1 signaling pathways, thereby combating AD. The natural molecules modulating SIRT1 discussed in this review provide a potentially novel multi-mechanistic therapeutic strategy for AD. However, future clinical trials need to be conducted to further investigate their beneficial properties and to determine the safety and efficacy of SIRT1 natural activators against AD.
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Cartas-Cejudo P, Lachén-Montes M, Ferrer I, Fernández-Irigoyen J, Santamaría E. Sex-divergent effects on the NAD+-dependent deacetylase sirtuin signaling across the olfactory-entorhinal-amygdaloid axis in Alzheimer's and Parkinson's diseases. Biol Sex Differ 2023; 14:5. [PMID: 36755296 PMCID: PMC9906849 DOI: 10.1186/s13293-023-00487-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/16/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Smell impairment is one of the earliest features in Alzheimer's (AD) and Parkinson's diseases (PD). Due to sex differences exist in terms of smell and olfactory structures as well as in the prevalence and manifestation of both neurological syndromes, we have applied olfactory proteomics to favor the discovery of novel sex-biased physio-pathological mechanisms and potential therapeutic targets associated with olfactory dysfunction. METHODS SWATH-MS (sequential window acquisition of all theoretical fragment ion spectra mass spectrometry) and bioinformatic workflows were applied in 57 post-mortem olfactory tracts (OT) derived from controls with no known neurological history (n = 6F/11M), AD (n = 4F/13M) and PD (n = 7F/16M) subjects. Complementary molecular analyses by Western-blotting were performed in the olfactory bulb (OB), entorhinal cortex (EC) and amygdala areas. RESULTS 327 and 151 OT differentially expressed proteins (DEPs) were observed in AD women and AD men, respectively (35 DEPs in common). With respect to PD, 198 DEPs were identified in PD women, whereas 95 DEPs were detected in PD men (20 DEPs in common). This proteome dyshomeostasis induced a disruption in OT protein interaction networks and widespread sex-dependent pathway perturbations in a disease-specific manner, among them Sirtuin (SIRT) signaling. SIRT1, SIRT2, SIRT3 and SIRT5 protein levels unveiled a tangled expression profile across the olfactory-entorhinal-amygdaloid axis, evidencing disease-, sex- and brain structure-dependent changes in olfactory protein acetylation. CONCLUSIONS Alteration in the OT proteostasis was more severe in AD than in PD. Moreover, protein expression changes were more abundant in women than men independent of the neurological syndrome. Mechanistically, the tangled SIRT profile observed across the olfactory pathway-associated brain regions in AD and PD indicates differential NAD (+)-dependent deacetylase mechanisms between women and men. All these data shed new light on differential olfactory mechanisms across AD and PD, pointing out that the evaluation of the feasibility of emerging sirtuin-based therapies against neurodegenerative diseases should be considered with caution, including further sex dimension analyses in vivo and in clinical studies.
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Affiliation(s)
- Paz Cartas-Cejudo
- grid.410476.00000 0001 2174 6440Clinical Neuroproteomics Unit, Proteomics Platform, Navarrabiomed, Hospitalario Universitario de Navarra (HUN), IdiSNA, Navarra Institute for Health Research, Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain
| | - Mercedes Lachén-Montes
- grid.410476.00000 0001 2174 6440Clinical Neuroproteomics Unit, Proteomics Platform, Navarrabiomed, Hospitalario Universitario de Navarra (HUN), IdiSNA, Navarra Institute for Health Research, Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain
| | - Isidro Ferrer
- grid.5841.80000 0004 1937 0247Department of Pathology and Experimental Therapeutics, CIBERNED (Network Centre of Biomedical Research of Neurodegenerative Diseases), Bellvitge University Hospital/Bellvitge Biomedical Research Institute (IDIBELL), Institute of Health Carlos III, University of Barcelona, Hospitalet de Llobregat, Barcelona, Spain
| | - Joaquín Fernández-Irigoyen
- grid.410476.00000 0001 2174 6440Clinical Neuroproteomics Unit, Proteomics Platform, Navarrabiomed, Hospitalario Universitario de Navarra (HUN), IdiSNA, Navarra Institute for Health Research, Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain
| | - Enrique Santamaría
- Clinical Neuroproteomics Unit, Proteomics Platform, Navarrabiomed, Hospitalario Universitario de Navarra (HUN), IdiSNA, Navarra Institute for Health Research, Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008, Pamplona, Spain.
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Xiang J, Ma YL, Zou J, Zeng XX, Xiao X, Yu YL, Dong YT, Ran LY, Qi XL, Hong W, Gao YH, Guan ZZ. Extract of Ginkgo biloba leaves attenuates neurotoxic damages in rats and SH-SY5Y cells exposed to a high level of fluoride. J Trace Elem Med Biol 2023; 75:127088. [PMID: 36265321 DOI: 10.1016/j.jtemb.2022.127088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 09/19/2022] [Accepted: 09/28/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Potential protection against the neurotoxic damages of high levels of fluoride on rats and SH-SY5Y cells by extract of Ginkgo biloba leaves, as well as underlying mechanisms, were examined. METHODS The rats were divided randomly into 4 groups, i.e., control, treatment with the extract (100 mg/kg body weight, gavage once daily), treatment with fluoride (50 ppm F- in drinking water) and combined treatment with both; SH-SY5Y cells exposed to fluoride and fluoride in combination with the extract or 4-Amino-1,8-naphthalimide (4-ANI), an inhibitor of poly (ADP-ribose) polymerase-1 (PARP-1). Spatial learning and memory in the rats were assessed employing Morris water maze test; the contents of fluoride in brains and urine by fluoride ion-selective electrode; cytotoxicity of fluoride was by CCK-8 kit; the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), and the content of malondialdehyde (MDA) by appropriate kits; the level of 8-hydroxydeoxyguanosine (8-OHdG) was by ELISA; the content of ROS and frequency of apoptosis by flow cytometry; the expressions of phospho-histone H2A.X(Ser139), PARP-1, poly (ADP-ribose) (PAR) and Sirtuin-1 (SIRT1) by Western blotting or immunofluorescence. RESULTS The rats with prolong treatment of fluoride exhibited dental fluorosis, the increased contents of fluoride in brains and urine and the declined ability of learning and memory. In the hippocampus of the rats and SH-SY5Y cells exposed to fluoride, the levels of ROS, MDA, apoptosis, 8-OHdG and the protein expressions of histone H2A.X(Ser139), PARP-1 and PAR were all elevated; the activities of SOD and GSH-Px and the protein expression of SIRT1 reduced. Interestingly, the treatment of Ginkgo biloba extract attenuated these neurotoxic effects on rats and SH-SY5Y cells exposed to fluoride and the treatment of 4-ANI produced a neuroprotective effect against fluoride exposure. CONCLUSION Ginkgo biloba extract attenuated neurotoxic damages induced by fluoride exposure to rats and SH-SY5Y cells and the underlying mechanism might involve the inhibition of PARP-1 and the promotion of SIRT1.
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Affiliation(s)
- Jie Xiang
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Department of Pathology of Guizhou Medical University and Guiyang 550004, PR China
| | - Yan-Lin Ma
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Jian Zou
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Department of Pathology of Guizhou Medical University and Guiyang 550004, PR China
| | - Xiao-Xiao Zeng
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Department of Pathology of Guizhou Medical University and Guiyang 550004, PR China
| | - Xiao Xiao
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Department of Pathology of Guizhou Medical University and Guiyang 550004, PR China
| | - Yan-Long Yu
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Long-Yan Ran
- Department of Medical Science and Technology at the Guiyang Healthcare Vocational University, Guiyang 550004, PR China
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Yan-Hui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, PR China
| | - Zhi-Zhong Guan
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University and Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education, Guiyang 550004, PR China.
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10
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Tecellioğlu M, Türkmen NB, Ciftçi O, Taşlıdere A, Ekmekyapar T, Yüce H, Öztanır MN, Özcan C. The Beneficial Effects of Resveratrol on Experimental Autoimmune Encephalomyelitis (EAE) in C57BL/6J Mouse Model. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022040093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Guo M, Zhu F, Qiu W, Qiao G, Law BYK, Yu L, Wu J, Tang Y, Yu C, Qin D, Zhou X, Wu A. High-throughput screening for amyloid-β binding natural small-molecules based on the combinational use of biolayer interferometry and UHPLC−DAD-Q/TOF-MS/MS. Acta Pharm Sin B 2022; 12:1723-1739. [PMID: 35847494 PMCID: PMC9279722 DOI: 10.1016/j.apsb.2021.08.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 08/11/2021] [Accepted: 08/24/2021] [Indexed: 01/10/2023] Open
Abstract
Discovery of drugs rapidly and effectively is an important aspect for Alzheimer's disease (AD). In this study, a novel high-throughput screening (HTS) method aims at screening the small-molecules with amyloid-β (Aβ) binding affinity from natural medicines, based on the combinational use of biolayer interferometry (BLI) and ultra-high-performance liquid chromatography coupled with diode-array detector and quadrupole/time-of-flight tandem mass spectrometry (UHPLC−DAD-Q/TOF-MS/MS) has been firstly developed. Briefly, the components in natural medicines disassociated from biotinylated Aβ were collected to analyze their potential Aβ binding affinity by UHPLC−DAD-Q/TOF-MS/MS. Here, baicalein was confirmed to exhibit the highest binding affinity with Aβ in Scutellaria baicalensis. Moreover, polyporenic acid C (PPAC), dehydrotumulosic acid (DTA), and tumulosic acid (TA) in Kai-Xin-San (KXS) were also identified as potent Aβ inhibitors. Further bioactivity validations indicated that these compounds could inhibit Aβ fibrillation, improve the viability in Aβ-induced PC-12 cells, and decrease the Aβ content and improve the behavioral ability in Caenorhabditis elegans. The molecular docking results confirmed that PPAC, DTA, and TA possessed good binding properties with Aβ. Collectively, the present study has provided a novel and effective HTS method for the identification of natural inhibitors on Aβ fibrillation, which may accelerate the process on anti-AD drugs discovery and development.
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12
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Dietary Plant Polyphenols as the Potential Drugs in Neurodegenerative Diseases: Current Evidence, Advances, and Opportunities. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5288698. [PMID: 35237381 PMCID: PMC8885204 DOI: 10.1155/2022/5288698] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/10/2022] [Accepted: 01/28/2022] [Indexed: 02/07/2023]
Abstract
Neurodegenerative diseases, including Alzheimer’s disease (AD), Parkinson’s disease (PD), and Huntington’s disease (HD), are characterized by the progressive degeneration of neurons. Although the etiology and pathogenesis of neurodegenerative diseases have been studied intensively, the mechanism is still in its infancy. In general, most neurodegenerative diseases share common molecular mechanisms, and multiple risks interact and promote the pathologic process of neurogenerative diseases. At present, most of the approved drugs only alleviate the clinical symptoms but fail to cure neurodegenerative diseases. Numerous studies indicate that dietary plant polyphenols are safe and exhibit potent neuroprotective effects in various neurodegenerative diseases. However, low bioavailability is the biggest obstacle for polyphenol that largely limits its adoption from evidence into clinical practice. In this review, we summarized the widely recognized mechanisms associated with neurodegenerative diseases, such as misfolded proteins, mitochondrial dysfunction, oxidative damage, and neuroinflammatory responses. In addition, we summarized the research advances about the neuroprotective effect of the most widely reported dietary plant polyphenols. Moreover, we discussed the current clinical study and application of polyphenols and the factors that result in low bioavailability, such as poor stability and low permeability across the blood-brain barrier (BBB). In the future, the improvement of absorption and stability, modification of structure and formulation, and the combination therapy will provide more opportunities from the laboratory into the clinic for polyphenols. Lastly, we hope that the present review will encourage further researches on natural dietary polyphenols in the treatment of neurodegenerative diseases.
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13
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Dennison JL, Volmar CH, Ke D, Wang J, Gravel E, Hammond-Vignini S, Li Z, Timmons JA, Lohse I, Hayward MA, Brothers SP, Wahlestedt C. JOTROL, a Novel Formulation of Resveratrol, Shows Beneficial Effects in the 3xTg-AD Mouse Model. J Alzheimers Dis 2022; 86:173-190. [PMID: 35034905 DOI: 10.3233/jad-215370] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) has minimally effective treatments currently. High concentrations of resveratrol, a polyphenol antioxidant found in plants, have been reported to affect several AD-related and neuroprotective genes. To address the low bioavailability of resveratrol, we investigated a novel oral formulation of resveratrol, JOTROL™, that has shown increased pharmacokinetic properties compared to non-formulated resveratrol in animals and in humans. OBJECTIVE We hypothesized that equivalent doses of JOTROL, compared to non-formulated resveratrol, would result in greater brain exposure to resveratrol, and more efficacious responses on AD biomarkers. METHODS For sub-chronic reversal studies, 15-month-old male triple transgenic (APPSW/PS1M146V/TauP301L; 3xTg-AD) AD mice were treated orally with vehicle or 50 mg/kg JOTROL for 36 days. For prophylactic studies, male and female 3xTg-AD mice were similarly administered vehicle, 50 mg/kg JOTROL, or 50 mg/kg resveratrol for 9 months starting at 4 months of age. A behavioral battery was run, and mRNA and protein from brain and blood were analyzed for changes in AD-related gene and protein expression. RESULTS JOTROL displays significantly increased bioavailability over non-formulated resveratrol. Treatment with JOTROL resulted in AD-related gene expression changes (Adam10, Bace1, Bdnf, Psen1) some of which were brain region-dependent and sex-specific, as well as changes in inflammatory gene and cytokine levels. CONCLUSION JOTROL may be effective as a prophylaxis and/or treatment for AD through increased expression and/or activation of neuroprotective genes, suppression of pro-inflammatory genes, and regulation of central and peripheral cytokine levels.
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Affiliation(s)
- Jessica L Dennison
- Department of Psychiatry & Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL, USA.,Center for Therapeutic Innovation, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Claude-Henry Volmar
- Department of Psychiatry & Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL, USA.,Center for Therapeutic Innovation, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Danbing Ke
- KDM Laboratories Inc., Montreal, QC, Canada
| | - James Wang
- KDM Laboratories Inc., Montreal, QC, Canada
| | | | | | - Zuomei Li
- NuChem Sciences Inc., St. Laurent, QC, Canada
| | | | - Ines Lohse
- Department of Psychiatry & Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL, USA.,Center for Therapeutic Innovation, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - Shaun P Brothers
- Department of Psychiatry & Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL, USA.,Center for Therapeutic Innovation, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Claes Wahlestedt
- Department of Psychiatry & Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL, USA.,Center for Therapeutic Innovation, University of Miami Miller School of Medicine, Miami, FL, USA
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14
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Protection against Amyloid-β Oligomer Neurotoxicity by Small Molecules with Antioxidative Properties: Potential for the Prevention of Alzheimer’s Disease Dementia. Antioxidants (Basel) 2022; 11:antiox11010132. [PMID: 35052635 PMCID: PMC8773221 DOI: 10.3390/antiox11010132] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/02/2022] [Accepted: 01/03/2022] [Indexed: 12/29/2022] Open
Abstract
Soluble oligomeric assemblies of amyloid β-protein (Aβ), called Aβ oligomers (AβOs), have been recognized as primary pathogenetic factors in the molecular pathology of Alzheimer’s disease (AD). AβOs exert neurotoxicity and synaptotoxicity and play a critical role in the pathological progression of AD by aggravating oxidative and synaptic disturbances and tau abnormalities. As such, they are important therapeutic targets. From a therapeutic standpoint, it is not only important to clear AβOs or prevent their formation, it is also beneficial to reduce their neurotoxicity. In this regard, recent studies have reported that small molecules, most with antioxidative properties, show promise as therapeutic agents for reducing the neurotoxicity of AβOs. In this mini-review, we briefly review the significance of AβOs and oxidative stress in AD and summarize studies on small molecules with AβO-neurotoxicity-reducing effects. We also discuss mechanisms underlying the effects of these compounds against AβO neurotoxicity as well as their potential as drug candidates for the prevention and treatment of AD.
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15
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Crude Saponin from Platycodon grandiflorum Attenuates Aβ-Induced Neurotoxicity via Antioxidant, Anti-Inflammatory and Anti-Apoptotic Signaling Pathways. Antioxidants (Basel) 2021; 10:antiox10121968. [PMID: 34943071 PMCID: PMC8750977 DOI: 10.3390/antiox10121968] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/05/2021] [Accepted: 12/07/2021] [Indexed: 12/18/2022] Open
Abstract
Although Platycodon grandiflorum saponins exhibit many beneficial biological effects in various diseases and conditions, how they protect nerve cells against neurodegenerative diseases and Alzheimer’s disease (AD) pathology is unknown. We investigated whether P. grandiflorum crude saponin (PGS) protects neurons from neurodegeneration caused by amyloid beta (Aβ)-induced oxidative stress. Hippocampal neuron HT-22 cells were used in the in vitro experiment, and AD mice (5XFAD mice) were used as the in vivo model. Intracellular reactive oxygen species (ROS) was stained with DCF-DA and assessed using fluorescence microscopy. To elucidate the mechanism underlying neuroprotection, intracellular protein levels were assessed by western blotting. In 5XFAD mice, an animal model of AD, nerve damage recovery due to the induction of Aβ toxicity was evaluated by histological analysis. PGS attenuates Aβ-induced neurotoxicity by inhibiting Aβ-induced reactive oxygen species (ROS) production and apoptosis in HT-22 cells. Furthermore, PGS upregulated Nrf2-mediated antioxidant signaling and downregulated NF-κB-mediated inflammatory signaling. Additionally, PGS inhibited apoptosis by regulating the expression of apoptosis-associated proteins. In addition, PGS ameliorated Aβ-mediated pathologies, leading to AD-associated cognitive decline. Conclusions: Taken together, these findings suggest that PGS inhibits Aβ accumulation in the subiculum and cerebral cortex and attenuates Aβ toxicity-induced nerve damage in vitro and in vivo. Therefore, PGS is a resource for developing AD therapeutics.
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16
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Xiang J, Ran LY, Zeng XX, He WW, Xu Y, Cao K, Dong YT, Qi XL, Yu WF, Xiao Y, Guan ZZ. LiCl attenuates impaired learning and memory of APP/PS1 mice, which in mechanism involves α7 nAChRs and Wnt/β-catenin pathway. J Cell Mol Med 2021; 25:10698-10710. [PMID: 34708522 PMCID: PMC8581309 DOI: 10.1111/jcmm.17006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/26/2021] [Accepted: 09/30/2021] [Indexed: 12/16/2022] Open
Abstract
We examined the mechanism by which lithium chloride (LiCl) attenuates the impaired learning capability and memory function of dual-transgenic APP/PS1 mice. Six- or 12-month-old APP/PS1 and wild-type (WT) mice were randomized into four groups, namely WT, WT+Li (100 mg LiCl/kg body weight, gavage once daily), APP/PS1 and APP/PS1+Li. Primary rat hippocampal neurons were exposed to β-amyloid peptide oligomers (AβOs), LiCl and/or XAV939 (inhibitor of Wnt/β-catenin) or transfected with small interfering RNA against the β-catenin gene. In the cerebral zone of APP/PS1 mice, the level of Aβ was increased and those of α7 nicotinic acetylcholine receptors (nAChR), phosphor-GSK3β (ser9), β-catenin and cyclin D1 (protein and/or mRNA levels) reduced. Two-month treatment with LiCl at ages of 4 or 10 months weakened all of these effects. Similar expression variations were observed for these proteins in primary neurons exposed to AβOs, and these effects were attenuated by LiCl and aggravated by XAV939. Inhibition of β-catenin expression lowered the level of α7 nAChR protein in these cells. LiCl attenuates the impaired learning capability and memory function of APP/PS1 mice via a mechanism that might involve elevation of the level of α7 nAChR as a result of altered Wnt/β-catenin signalling.
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Affiliation(s)
- Jie Xiang
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China.,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China
| | - Long-Yan Ran
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China.,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China
| | - Xiao-Xiao Zeng
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China.,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China
| | - Wen-Wen He
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China
| | - Yi Xu
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China
| | - Kun Cao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China
| | - Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China.,Provincial Key Laboratory of Medical Molecular Biology, Guiyang, P.R. China
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China.,Provincial Key Laboratory of Medical Molecular Biology, Guiyang, P.R. China
| | - Wen-Feng Yu
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China.,Provincial Key Laboratory of Medical Molecular Biology, Guiyang, P.R. China
| | - Yan Xiao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China.,Provincial Key Laboratory of Medical Molecular Biology, Guiyang, P.R. China
| | - Zhi-Zhong Guan
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China.,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, P.R. China.,Provincial Key Laboratory of Medical Molecular Biology, Guiyang, P.R. China
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17
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Yin Z, Geng X, Zhang Z, Wang Y, Gao X. Rhein Relieves Oxidative Stress in an Aβ 1-42 Oligomer-Burdened Neuron Model by Activating the SIRT1/PGC-1α-Regulated Mitochondrial Biogenesis. Front Pharmacol 2021; 12:746711. [PMID: 34566664 PMCID: PMC8461019 DOI: 10.3389/fphar.2021.746711] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 08/31/2021] [Indexed: 01/19/2023] Open
Abstract
Neuronal mitochondrial oxidative stress induced by β-amyloid (Aβ) is an early event of Alzheimer’s disease (AD). Emerging evidence has shown that antioxidant therapy represents a promising therapeutic strategy for the treatment of AD. In this study, we investigated the antioxidant activity of rhein against Aβ1-42 oligomer-induced mitochondrial oxidative stress in primary neurons and proposed a potential antioxidant pathway involved. The results suggested that rhein significantly reduced reactive oxygen species (ROS) level, reversed the depletion of mitochondrial membrane potential, and protected neurons from oxidative stress-associated apoptosis. Moreover, further study indicated that rhein activated mitochondrial biogenesis accompanied by increased cytochrome C oxidase (CytOx) and superoxide dismutase (SOD) activities. CytOx on the respiratory chain inhibited the production of ROS from electron leakage and SOD helped to eliminate excess ROS. Finally, western blot analysis confirmed that rhein remarkedly increased the protein expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) together with its upstream deacetylase sirtuin 1 (SIRT1), and activated downstream transcription factor nuclear respiratory factor 1, promoting mitochondrial biogenesis. In conclusion, our results demonstrate that rhein activates mitochondrial biogenesis regulated by the SIRT1/PGC-1α pathway as an antioxidant defense system against Aβ1-42 oligomer-induced oxidative stress. These findings broaden our knowledge of improving mitochondrial biogenesis as an approach for relieving neuronal oxidative stress in AD.
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Affiliation(s)
- Zhihui Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Xinyue Geng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Zhengyi Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Ying Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaoyan Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
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18
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Mi Y, Qi G, Brinton RD, Yin F. Mitochondria-Targeted Therapeutics for Alzheimer's Disease: The Good, the Bad, the Potential. Antioxid Redox Signal 2021; 34:611-630. [PMID: 32143551 PMCID: PMC7891225 DOI: 10.1089/ars.2020.8070] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022]
Abstract
Significance: Alzheimer's disease (AD) is the leading cause of dementia. Thus far, 99.6% of clinical trials, including those targeting energy metabolism, have failed to exert disease-modifying efficacy. Altered mitochondrial function and disruption to the brain bioenergetic system have long-been documented as early events during the pathological progression of AD. Recent Advances: While therapeutic approaches that directly promote mitochondrial bioenergetic machinery or eliminate reactive oxygen species have exhibited limited translatability, emerging strategies targeting nonenergetic aspects of mitochondria provide novel therapeutic targets with the potential to modify AD risk and progression. Growing evidence also reveals a critical link between mitochondrial phenotype and neuroinflammation via metabolic reprogramming of glial cells. Critical Issues: Herein, we summarize major classes of mitochondrion-centered AD therapeutic strategies. In addition, the discrepancy in their efficacy when translated from preclinical models to clinical trials is addressed. Key factors that differentiate the responsiveness to bioenergetic interventions, including sex, apolipoprotein E genotype, and cellular diversity in the brain, are discussed. Future Directions: We propose that the future development of mitochondria-targeted AD therapeutics should consider the interactions between bioenergetics and other disease mechanisms, which may require cell-type-specific targeting to distinguish neurons and non-neuronal cells. Moreover, a successful strategy will likely include stratification by metabolic phenotype, which varies by sex and genetic risk profile and dynamically changes throughout the course of disease. As the network of mitochondrial integration expands across intracellular and systems level biology, assessment of intended, the good, versus unintended consequences, the bad, will be required to reach the potential of mitochondrial therapeutics.
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Affiliation(s)
- Yashi Mi
- Center for Innovation in Brain Science, University of Arizona Health Sciences, Tucson, Arizona, USA
| | - Guoyuan Qi
- Center for Innovation in Brain Science, University of Arizona Health Sciences, Tucson, Arizona, USA
| | - Roberta Diaz Brinton
- Center for Innovation in Brain Science, University of Arizona Health Sciences, Tucson, Arizona, USA
- Department of Pharmacology, College of Medicine Tucson, Tucson, Arizona, USA
- Department of Neurology, College of Medicine Tucson, Tucson, Arizona, USA
- Graduate Interdisciplinary Program in Neuroscience, University of Arizona, Tucson, Arizona, USA
| | - Fei Yin
- Center for Innovation in Brain Science, University of Arizona Health Sciences, Tucson, Arizona, USA
- Department of Pharmacology, College of Medicine Tucson, Tucson, Arizona, USA
- Graduate Interdisciplinary Program in Neuroscience, University of Arizona, Tucson, Arizona, USA
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Yeong KY, Berdigaliyev N, Chang Y. Sirtuins and Their Implications in Neurodegenerative Diseases from a Drug Discovery Perspective. ACS Chem Neurosci 2020; 11:4073-4091. [PMID: 33280374 DOI: 10.1021/acschemneuro.0c00696] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Sirtuins are class III histone deacetylase (HDAC) enzymes that target both histone and non-histone substrates. They are linked to different brain functions and the regulation of different isoforms of these enzymes is touted to be an emerging therapy for the treatment of neurodegenerative diseases (NDs), including Parkinson's disease (PD), Alzheimer's disease (AD), and amyotrophic lateral sclerosis (ALS). The level of sirtuins affects brain health as many sirtuin-regulated pathways are responsible for the progression of NDs. Certain sirtuins are also implicated in aging, which is a risk factor for many NDs. In addition to SIRT1-3, it has been suggested that the less studied sirtuins (SIRT4-7) also play critical roles in brain health. This review delineates the role of each sirtuin isoform in NDs from a disease centric perspective and provides an up-to-date overview of sirtuin modulators and their potential use as therapeutics in these diseases. Furthermore, the future perspectives for sirtuin modulator development and their therapeutic application in neurodegeneration are outlined in detail, hence providing a research direction for future studies.
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Affiliation(s)
- Keng Yoon Yeong
- School of Science, Monash University Malaysia Campus, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Nurken Berdigaliyev
- School of Science, Monash University Malaysia Campus, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Yuin Chang
- Faculty of Applied Sciences, Tunku Abdul Rahman University College (TARUC), Jalan Genting Kelang, 53300 Kuala Lumpur, Malaysia
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20
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The Beneficial Roles of SIRT1 in Neuroinflammation-Related Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6782872. [PMID: 33014276 PMCID: PMC7519200 DOI: 10.1155/2020/6782872] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/29/2020] [Accepted: 08/30/2020] [Indexed: 12/15/2022]
Abstract
Sirtuins are the class III of histone deacetylases whose deacetylate of histones is dependent on nicotinamide adenine dinucleotide (NAD+). Among seven sirtuins, SIRT1 plays a critical role in modulating a wide range of physiological processes, including apoptosis, DNA repair, inflammatory response, metabolism, cancer, and stress. Neuroinflammation is associated with many neurological diseases, including ischemic stroke, bacterial infections, traumatic brain injury, Alzheimer's disease (AD), and Parkinson's disease (PD). Recently, numerous studies indicate the protective effects of SIRT1 in neuroinflammation-related diseases. Here, we review the latest progress regarding the anti-inflammatory and neuroprotective effects of SIRT1. First, we introduce the structure, catalytic mechanism, and functions of SIRT1. Next, we discuss the molecular mechanisms of SIRT1 in the regulation of neuroinflammation. Finally, we analyze the mechanisms and effects of SIRT1 in several common neuroinflammation-associated diseases, such as cerebral ischemia, traumatic brain injury, spinal cord injury, AD, and PD. Taken together, this information implies that SIRT1 may serve as a promising therapeutic target for the treatment of neuroinflammation-associated disorders.
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Zeng XX, Deng J, Xiang J, Dong YT, Cao K, Liu XH, Chen D, Ran LY, Yang Y, Guan ZZ. Protections against toxicity in the brains of rat with chronic fluorosis and primary neurons exposed to fluoride by resveratrol involves nicotinic acetylcholine receptors. J Trace Elem Med Biol 2020; 60:126475. [PMID: 32142957 DOI: 10.1016/j.jtemb.2020.126475] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/28/2020] [Accepted: 02/08/2020] [Indexed: 01/08/2023]
Abstract
Protection of Resveratrol (RSV) against the neurotoxicity induced by high level of fluoride was investigated. Sprague-Dawley (SD) rats and their offspring, as well as cultures of primary neurons were divided randomly into four groups: untreated (control); treated with 50 mg RSV/kg/ (once daily by gavage) or (20 M in the cultured medium); exposed to 50 ppm F- in drinking water or 4 mmol/l in the cultured medium; and exposed to fluoride then RSV as above. The adult rats were treated for 7 months and the offspring sacrificed at 28 days of age; the cultured neurons for 48 h. For general characterization, dental fluorosis was assessed and the fluoride content of the urine measured (by fluoride-electrode) in the rates and the survival of cultured neurons monitored with the CCK-8 test. The spatial learning and memory of rats were assessed with the Morris water maze test. The levels of α7 and α4 nicotinic acetylcholine receptors (nAChRs) were quantified by Western blotting; and the activities of superoxide dismutase (SOD) and catalase (CAT), and the levels of malondialdehyde (MDA) and H2O2 assayed biochemically. The results showed that chronic fluorosis resulted in the impaired learning and memory in rats and their offspring, and more oxidative stress in both rat brains and cultured neurons, which may be associated the lower levels of α7 and α4 nAChR subunits. Interestingly, RSV attenuated all of these toxic effects by fluorosis, indicating that protection against the neurotoxicity of fluoride by RSV might be in mechanism involved enhancing the expressions of these nAChRs.
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Affiliation(s)
- Xiao-Xiao Zeng
- Departments of Pathology at Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, PR China; Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, Guizhou, PR China
| | - Jie Deng
- Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, Guizhou, PR China
| | - Jie Xiang
- Departments of Pathology at Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, PR China; Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China
| | - Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, Guizhou, PR China
| | - Kun Cao
- Departments of Pathology at Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, PR China; Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China
| | - Xian-Hong Liu
- Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, Guizhou, PR China
| | - Dan Chen
- Departments of Pathology at Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, PR China; Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China
| | - Long-Yan Ran
- Departments of Pathology at Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, PR China; Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China
| | - Ye Yang
- Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, Guizhou, PR China
| | - Zhi-Zhong Guan
- Departments of Pathology at Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, PR China; Key Laboratory of Endemic and Ethnic Diseases, (Guizhou Medical University) of the Ministry of Education, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, Guizhou, PR China.
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Sousa JCE, Santana ACF, MagalhÃes GJP. Resveratrol in Alzheimer's disease: a review of pathophysiology and therapeutic potential. ARQUIVOS DE NEURO-PSIQUIATRIA 2020; 78:501-511. [PMID: 32520230 DOI: 10.1590/0004-282x20200010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 01/17/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive and irreversible loss of cognitive function. The presence of senile plaques is one of the pathological markers of the disease and is associated with the onset of neuroinflammatory mechanisms. The exact pathophysiology of AD has not been completely understood, and there are no curative therapies yet. Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a polyphenol that is noted for its antioxidant and anti-inflammatory properties. OBJECTIVE To review the role of resveratrol in the pathophysiological aspects of AD. METHODS This study carried out a literature review using PubMed/Medline, Virtual Health Library (VHL), Web of Sciences, SCOPUS and the Cochrane Library databases. Original research articles, describing both in vitro and in vivo experiments, published between 2008 and 2018, were included. RESULTS We identified 667 articles, of which 619 were excluded because they were repeated or did not follow the inclusion criteria. The present study includes the remaining 48 articles. DISCUSSION Resveratrol demonstrates beneficial and protective effects in AD models and seems to provide a promising therapeutic alternative. CONCLUSION Although resveratrol appears to mitigate some pathophysiological aspects of AD, further studies are needed to prove the safety and efficacy of this compound in humans.
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Affiliation(s)
- Júlia Canto E Sousa
- Universidade Salvador, Escola de Ciências da Saúde, Departamento de Nutrição, Salvador BA, Brazil
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Tyagi A, Mirita C, Taher N, Shah I, Moeller E, Tyagi A, Chong T, Pugazhenthi S. Metabolic syndrome exacerbates amyloid pathology in a comorbid Alzheimer's mouse model. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165849. [PMID: 32485218 DOI: 10.1016/j.bbadis.2020.165849] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/21/2020] [Accepted: 05/26/2020] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD) often coexists with other aging-associated diseases including obesity, diabetes, hypertension, and cardiovascular diseases. The early stage of these comorbidities is known as metabolic syndrome (MetS) which is highly prevalent in mid-life. An important cause of MetS is the deficiency of SIRT3, a mitochondrial deacetylase which enhances the functions of critical mitochondrial proteins, including metabolic enzymes, by deacetylation. Deletion of Sirt3 gene has been reported to result in the acceleration of MetS. In a recently published study, we demonstrated in the brain of Sirt3-/- mice, downregulation of metabolic enzymes, insulin resistance and elevation of inflammatory markers including microglial proliferation. These findings suggested a novel pathway that could link SIRT3 deficiency to neuroinflammation, an important cause of Alzheimer's pathogenesis. Therefore, we hypothesized that MetS and amyloid pathology may interact through converging pathways of insulin resistance and neuroinflammation in comorbid AD. To investigate these interactions, we crossed Sirt3-/- mice with APP/PS1 mice and successfully generated APP/PS1/Sirt3-/- mice with amyloid pathology and MetS. In these comorbid AD mice, we observed exacerbation of insulin resistance, glucose intolerance, amyloid plaque deposition, markers of neuroinflammation, including elevated expression of IL-1β, TNF-α and Cox-2 at 8 months of age. There was also increased microglial proliferation and activation. Our observations suggest a novel mechanism by which MetS may interact with amyloid pathology during the cellular phase of AD. Therapeutic targeting of SIRT3 in AD with comorbidities may produce beneficial effects.
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Affiliation(s)
- Alpna Tyagi
- Rocky Mountain Regional VA Medical Center, USA; Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | | | | | - Iman Shah
- Rocky Mountain Regional VA Medical Center, USA
| | | | - Anit Tyagi
- Rocky Mountain Regional VA Medical Center, USA; Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | | | - Subbiah Pugazhenthi
- Rocky Mountain Regional VA Medical Center, USA; Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA.
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Chen N, Wang J, He Y, Xu Y, Zhang Y, Gong Q, Yu C, Gao J. Trilobatin Protects Against Aβ 25-35-Induced Hippocampal HT22 Cells Apoptosis Through Mediating ROS/p38/Caspase 3-Dependent Pathway. Front Pharmacol 2020; 11:584. [PMID: 32508629 PMCID: PMC7248209 DOI: 10.3389/fphar.2020.00584] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 04/16/2020] [Indexed: 12/31/2022] Open
Abstract
Emerging evidence reveals that an aberrant accumulation of β-amyloid (Aβ) is the main reason of Alzheimer’s disease (AD) pathogenesis. Thus, inhibition of Aβ-induced neurotoxicity may be promising therapeutic tactics to mitigate AD onset and advance. The development of agent candidates by cultured neurons against Aβ-induced cytotoxicity is widely accepted to be an efficient strategy to explore the drug for AD patients. Previously, we have revealed that trilobatin (TLB), a small molecule monomer, derives from Lithocarpus polystachyus Rehd, possessed antioxidative activities on hydrogen peroxide-induced oxidative injury in PC12 cells. The present study was designed to investigate the effects and the underlying mechanism of TLB on Aβ-induced injury in hippocampal HT22 cells. The results demonstrated that TLB attenuated Aβ25–35-induced HT22 cell death, as evidenced by MTT assay and LDH release. Furthermore, TLB dramatically mitigated cell death after Aβ25–35 insulted via decreasing the intracellular and mitochondrial ROS overproduction and restoring antioxidant enzyme activities, as well as suppressing apoptosis. Of note, Aβ25–35 triggered increase in ratio of Bax/Bcl-2, activation of caspase-3, phosphorylation of tau, JNK, p38 MAPK, and decrease in Sirt3 expression, whereas TLB reversed these changes. Intriguingly, TLB could directly bind to p38, as evidenced by molecular docking and p38 inhibitor. Taken together, the results reveal that TLB effectively protects against Aβ25–35-induced neuronal cell death via activating ROS/p38/caspase 3-dependent pathway. Our findings afford evidence for the potential development of TLB to hinder neuronal death during AD.
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Affiliation(s)
- Nana Chen
- Department of Clinical Pharmacotherapeutics, School of Pharmacy, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi, China
| | - Jiao Wang
- Department of Neurology, the Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yuqi He
- Department of Clinical Pharmacotherapeutics, School of Pharmacy, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Yingshu Xu
- Department of Clinical Pharmacotherapeutics, School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Yuchuan Zhang
- Department of Clinical Pharmacotherapeutics, School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Qihai Gong
- Department of Clinical Pharmacotherapeutics, School of Pharmacy, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Changyin Yu
- Department of Neurology, the Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Jianmei Gao
- Department of Clinical Pharmacotherapeutics, School of Pharmacy, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi, China.,Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
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Dong YT, Cao K, Xiang J, Shan L, Guan ZZ. Silent Mating-Type Information Regulation 2 Homolog 1 Attenuates the Neurotoxicity Associated with Alzheimer Disease via a Mechanism Which May Involve Regulation of Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-α. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 190:1545-1564. [PMID: 32289286 DOI: 10.1016/j.ajpath.2020.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 12/29/2022]
Abstract
To investigate the neuroprotective role of silent mating-type information regulation 2 homolog 1 (SIRT1) in Alzheimer disease (AD), brain tissues from patients with AD and APP/PS1 mice as well as primary rat neurons exposed to oligomers of amyloid-β peptide were examined. The animals were treated with resveratrol (RSV) or suramin for 2 months. Cell cultures were treated with RSV, suramin, and the peroxisome proliferator-activated receptor gamma coactivator 1-α (PGC-1α) stimulator ZLN005. Cells were transiently transfected with PGC-1α silencing RNA. The level of SIRT1 in brain tissues from patients with AD and APP/PS1 mice, including nuclear and mitochondrial proteins, as well as in primary neurons exposed to oligomers of amyloid-β peptide, was decreased. Overexpression of APP/PS1 impaired learning and memory of mice; produced more senile plaques, disrupted membranes, and resulted in broken or absent cristae of mitochondria in the brain; decreased levels of A disintegrin and metallopeptidase domain 10, beta-secretase 2, 8-oxoguanine DNA glycosylase-1, PGC-1α, and NAD+; and increased levels of beta-secretase 1 and apoptosis. Interestingly, these changes were attenuated significantly by RSV treatment but enhanced by suramin administration. By activating PGC-1α but inhibiting SIRT1, apoptotic cell death was significantly decreased; however, by activating SIRT1 but inhibiting PGC-1α with small interfering PGC-1α, these levels remained unchanged. These findings indicate that SIRT1 may protect against AD-associated neurotoxicity, which might involve PGC-1α regulation.
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Affiliation(s)
- Yang-Ting Dong
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, PR China
| | - Kun Cao
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, PR China
| | - Jie Xiang
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, PR China
| | - Ling Shan
- the Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
| | - Zhi-Zhong Guan
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, PR China; Provincial Key Laboratory of Medical Molecular Biology, Guiyang, PR China.
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Cao K, Dong YT, Xiang J, Xu Y, Li Y, Song H, Yu WF, Qi XL, Guan ZZ. The neuroprotective effects of SIRT1 in mice carrying the APP/PS1 double-transgenic mutation and in SH-SY5Y cells over-expressing human APP670/671 may involve elevated levels of α7 nicotinic acetylcholine receptors. Aging (Albany NY) 2020; 12:1792-1807. [PMID: 32003755 PMCID: PMC7053601 DOI: 10.18632/aging.102713] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 01/02/2020] [Indexed: 12/20/2022]
Abstract
The aim was to determine whether the neuroprotective effect of SIRT1 in Alzheimer’s disease (AD), due to inhibition of aggregation of the β-amyloid peptide (Aβ), involves activation of α7 nAChR. In present study, four-month-old APP/PS1 mice were administered resveratrol (RSV) or suramin once daily for two months, following which their spatial learning and memory were assessed using the Morris water maze test. Deposits of Aβ in vivo were detected by near-infrared imaging (NIRI) and confocal laser scanning. SH-SY5Y/APPswe cells were treated with RSV, suramin, U0126 or methyllycaconitine (MLA). Levels of proteins and mRNA were determined by Western blotting and qRT-PCR, respectively. The results show that activation of SIRT1 improved their spatial learning and memory and reduced the production and aggregation of Aβ in the hippocampus and cerebral cortex; whereas inhibition of SIRT1 had the opposite effects. In addition, activation of SIRT1 increased the levels of both α7 nAChR and αAPP in the brains these animals. Finally, activation of SIRT1 elevated the levels of pERK1/2, while inhibition of ERK1/2 counteracted the increase in α7 nAChR caused by RSV. These findings indicate that neuroprotection by SIRT1 may involve increasing levels of α7 nAChR through activation of the MAPK/ERK1/2 signaling pathway.
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Affiliation(s)
- Kun Cao
- Department of Pathology at Guizhou Medical University and Pathology Department in Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, P. R. of China
| | - Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
| | - Jie Xiang
- Department of Pathology at Guizhou Medical University and Pathology Department in Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, P. R. of China
| | - Yi Xu
- Department of Pathology at Guizhou Medical University and Pathology Department in Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, P. R. of China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
| | - Yi Li
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
| | - Hui Song
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
| | - Wen-Feng Yu
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
| | - Zhi-Zhong Guan
- Department of Pathology at Guizhou Medical University and Pathology Department in Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, P. R. of China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, Guizhou, P. R. of China.,Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, P. R. of China
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Yu X, Hu Y, Huang W, Ye N, Yan Q, Ni W, Jiang X. Role of AMPK/SIRT1-SIRT3 signaling pathway in affective disorders in unpredictable chronic mild stress mice. Neuropharmacology 2019; 165:107925. [PMID: 31877320 DOI: 10.1016/j.neuropharm.2019.107925] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To explore the role of 5' adenosine monophosphate-activated protein kinase/sirtuin1-sirtuin3 (AMPK/SIRT1-SIRT3) signaling pathway in behavioral and neuroinflammation/oxidative stress alterations in unpredictable chronic mild stress (UCMS) model mice. METHODS Male ICR mice weighing 20-22 g were used in this study. Behavior performance was evaluated from the 14th day of drug treatment. Expression levels of AMPK, SIRT1, SIRT3, and NF-κBp65 were tested by immuno-blot analysis. Contents of tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β) and interleukin 6 (IL-6) were detected by enzyme linked immunosorbent assay (ELISA). Reactive oxygen species (ROS), superoxide dismutase (SOD) and glutathione (GSH) expressions were tested by neurochemical and biochemical assays. RESULTS Behavioral disorders and decreases of AMPK, SIRT1 and SIRT3 induced by UCMS were all reversed by AICA Riboside (AICAR) treatment. These effects were correlated with alterations of oxidative stress (ROS, GSH, SOD) and inflammation (pNF-κBp65, TNF-α, IL-1β, IL-6) status. Co-treatment with SIRT3 inhibitor (3-TYP) in addition to AICAR abolished AICAR's effects on behavior and expression level of inflammation/oxidative stress-related factors of mice, without affecting the content of SIRT1. Contrarily, combining use of AICAR and SIRT1 inhibitor (Sirtinol or EX-527) increased SIRT3 level, which led to better alleviation of behavioral disorders, compared with single AICAR treatment. Interestingly, in normal or UCMS mice, up or down regulation of SIRT1 did not affect SIRT3 level. CONCLUSION Provided that AMPK is activated, SIRT1 inhibition could induce the increase of SIRT3, and SIRT3 exerts more beneficial function in alleviation of consequences of chronic stress than SIRT1.
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Affiliation(s)
- Xuefeng Yu
- Department of Pharmacy, Zhejiang Pharmaceutical College, Zhejiang Province, 315000, China
| | - Ying Hu
- Department of Pharmacy, Zhejiang Pharmaceutical College, Zhejiang Province, 315000, China
| | - Wenkai Huang
- Department of Pharmacy, Zhejiang Pharmaceutical College, Zhejiang Province, 315000, China
| | - Nuo Ye
- Department of Pharmacy, Zhejiang Pharmaceutical College, Zhejiang Province, 315000, China
| | - Qizhi Yan
- Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, 312000, China
| | - Wenjuan Ni
- Department of Pharmacy, Zhejiang Pharmaceutical College, Zhejiang Province, 315000, China
| | - Xi Jiang
- Department of Pharmacy, Zhejiang Pharmaceutical College, Zhejiang Province, 315000, China; Zhejiang University Mingzhou Hospital, Zhejiang Province, 315000, China.
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Xiang J, Cao K, Dong YT, Xu Y, Li Y, Song H, Zeng XX, Ran LY, Hong W, Guan ZZ. Lithium chloride reduced the level of oxidative stress in brains and serums of APP/PS1 double transgenic mice via the regulation of GSK3β/Nrf2/HO-1 pathway. Int J Neurosci 2019; 130:564-573. [DOI: 10.1080/00207454.2019.1688808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jie Xiang
- Department of Pathology at Guizhou Medical University and Pathological Department at the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
| | - Kun Cao
- Department of Pathology at Guizhou Medical University and Pathological Department at the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
| | - Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, People’s Republic of China
| | - Yi Xu
- Department of Pathology at Guizhou Medical University and Pathological Department at the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
| | - Yi Li
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, People’s Republic of China
| | - Hui Song
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, People’s Republic of China
| | - Xiao-Xiao Zeng
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, People’s Republic of China
| | - Long-Yan Ran
- Department of Pathology at Guizhou Medical University and Pathological Department at the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, People’s Republic of China
| | - Zhi-Zhong Guan
- Department of Pathology at Guizhou Medical University and Pathological Department at the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, Guizhou, People’s Republic of China
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Cosín-Tomàs M, Senserrich J, Arumí-Planas M, Alquézar C, Pallàs M, Martín-Requero Á, Suñol C, Kaliman P, Sanfeliu C. Role of Resveratrol and Selenium on Oxidative Stress and Expression of Antioxidant and Anti-Aging Genes in Immortalized Lymphocytes from Alzheimer's Disease Patients. Nutrients 2019; 11:E1764. [PMID: 31370365 PMCID: PMC6723840 DOI: 10.3390/nu11081764] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/24/2019] [Accepted: 07/28/2019] [Indexed: 12/29/2022] Open
Abstract
Oxidative damage is involved in the pathophysiology of age-related ailments, including Alzheimer's disease (AD). Studies have shown that the brain tissue and also lymphocytes from AD patients present increased oxidative stress compared to healthy controls (HCs). Here, we use lymphoblastoid cell lines (LCLs) from AD patients and HCs to investigate the role of resveratrol (RV) and selenium (Se) in the reduction of reactive oxygen species (ROS) generated after an oxidative injury. We also studied whether these compounds elicited expression changes in genes involved in the antioxidant cell response and other aging-related mechanisms. AD LCLs showed higher ROS levels than those from HCs in response to H2O2 and FeSO4 oxidative insults. RV triggered a protective response against ROS under control and oxidizing conditions, whereas Se exerted antioxidant effects only in AD LCLs under oxidizing conditions. RV increased the expression of genes encoding known antioxidants (catalase, copper chaperone for superoxide dismutase 1, glutathione S-transferase zeta 1) and anti-aging factors (sirtuin 1 and sirtuin 3) in both AD and HC LCLs. Our findings support RV as a candidate for inducing resilience and protection against AD, and reinforce the value of LCLs as a feasible peripheral cell model for understanding the protective mechanisms of nutraceuticals against oxidative stress in aging and AD.
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Affiliation(s)
- Marta Cosín-Tomàs
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), 08036 Barcelona, Spain
- Department of Human Genetics, Research Institute of the McGill University Health Centre, Montreal, QC H3A 0C7, Canada
| | - Júlia Senserrich
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), 08036 Barcelona, Spain
| | - Marta Arumí-Planas
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), 08036 Barcelona, Spain
| | - Carolina Alquézar
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
| | - Mercè Pallàs
- Faculty of Pharmacy and Food Sciences, Institut de Neurociències, Universitat de Barcelona, 08028 Barcelona, Spain
- CIBER de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, 28031 Madrid, Spain
| | - Ángeles Martín-Requero
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
- CIBER de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, 28031 Madrid, Spain
| | - Cristina Suñol
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), 08036 Barcelona, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28031 Madrid, Spain
- Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Perla Kaliman
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), 08036 Barcelona, Spain
- Faculty of Health Sciences, Universitat Oberta de Catalunya, 08018 Barcelona, Spain
| | - Coral Sanfeliu
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), 08036 Barcelona, Spain.
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28031 Madrid, Spain.
- Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain.
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Cao K, Xiang J, Dong YT, Xu Y, Li Y, Song H, Zeng XX, Ran LY, Hong W, Guan ZZ. Exposure to fluoride aggravates the impairment in learning and memory and neuropathological lesions in mice carrying the APP/PS1 double-transgenic mutation. Alzheimers Res Ther 2019; 11:35. [PMID: 31010414 PMCID: PMC6477877 DOI: 10.1186/s13195-019-0490-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 04/04/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is responsible for 60-70% of all cases of dementia. On the other hand, the tap water consumed by hundreds of millions of people has been fluoridated to prevent tooth decay. However, little is known about the influence of fluoride on the expression of APP and subsequent changes in learning and memory and neuropathological injury. Our aim here was to determine whether exposure to fluoride aggravates the neuropathological lesions in mice carrying the amyloid precursor protein (APP)/presenilin1 (PS1) double mutation. METHODS These transgenic or wide-type (WT) mice received 0.3 ml of a solution of fluoride (0.1 or 1 mg/ml, prepared with NaF) by intragastric administration once each day for 12 weeks. The learning and memory of these animals were assessed with the Morris water maze test. Senile plaques, ionized calcium binding adaptor molecule 1 (Iba-1), and complement component 3 (C3) expression were semi-quantified by immunohistochemical staining; the level of Aβ42 was detected by Aβ42 enzyme-linked immunosorbent assays (ELISAs); the levels of synaptic proteins and enzymes that cleave APP determined by Western blotting; and the malondialdehyde (MDA) content and activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) measured by biochemical procedures. RESULTS The untreated APP mice exhibited a decline in learning and memory after 12 weeks of fluoride treatment, whereas treatment of these some animals with low or high levels of fluoride led to such declines after only 4 or 8 weeks, respectively. Exposure of APP mice to fluoride elevated the number of senile plaques and level of Aβ42, Iba-1, and BACE1, while reducing the level of ADAM10 in their brains. The lower levels of synaptic proteins and enhanced oxidative stress detected in the hippocampus of APP mice were aggravated to fluoride. CONCLUSIONS These findings indicate that exposure to fluoride, even at lower concentration, can aggravate the deficit in learning and memory and neuropathological lesions of the mice that express the high level of APP.
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Affiliation(s)
- Kun Cao
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
| | - Jie Xiang
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
| | - Yang-Ting Dong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, 550004 Guizhou People’s Republic of China
| | - Yi Xu
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
| | - Yi Li
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, 550004 Guizhou People’s Republic of China
| | - Hui Song
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, 550004 Guizhou People’s Republic of China
| | - Xiao-Xiao Zeng
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, 550004 Guizhou People’s Republic of China
| | - Long-Yan Ran
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, 550004 Guizhou People’s Republic of China
| | - Zhi-Zhong Guan
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China (Guizhou Medical University), Guiyang, 550004 Guizhou People’s Republic of China
- Key Laboratory of Medical Molecular Biology, Guiyang, 550004 Guizhou People’s Republic of China
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Pfister JA, Ma C, D’Mello SR. Catalytic-independent neuroprotection by SIRT1 is mediated through interaction with HDAC1. PLoS One 2019; 14:e0215208. [PMID: 30973934 PMCID: PMC6459503 DOI: 10.1371/journal.pone.0215208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 03/28/2019] [Indexed: 12/25/2022] Open
Abstract
SIRT1, a NAD+-dependent deacetylase, protects neurons in a variety of in vitro and in vivo models of neurodegenerative disease. We have previously described a neuroprotective effect by SIRT1 independent of its catalytic activity. To confirm this conclusion we tested a panel of SIRT1 deletion mutant constructs, designated Δ1–Δ10, in cerebellar granule neurons induced to undergo apoptosis by low potassium treatment. We find that deletions of its N-terminal, those lacking portions of the catalytic domain, as well as one that lacks the ESA (Essential for SIRT1 Activity) motif, are as protective as wild-type SIRT1. In contrast, deletion of the region spanning residues 542–609, construct Δ8, substantially reduced the neuroprotective activity of SIRT1. As observed with LK-induced apoptosis, all SIRT1 constructs except Δ8 protect neurons against mutant huntingtin toxicity. Although its own catalytic activity is not required, neuroprotection by SIRT1 is abolished by inhibitors of Class I HDACs as well as by knockdown of endogenous HDAC1. We find that SIRT1 interacts with HDAC1 and this interaction is greatly increased by deleting regions of SIRT1 necessary for its catalytic activity. However, SIRT1-mediated protection is not dependent on HDAC1 deacetylase activity. Although other studies have described that catalytic activity of SIRT1 mediates is neuroprotective effect, our study suggests that in cerebellar granule neurons its deacetylase activity is not important and that HDAC1 contributes to the neuroprotective effect of SIRT1.
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Affiliation(s)
- Jason A. Pfister
- Department of Biological Sciences, Southern Methodist University, Dallas, TX, United States of America
| | - Chi Ma
- National Institutes of Health, Bethesda, MD, United States of America
| | - Santosh R. D’Mello
- Department of Biological Sciences, Southern Methodist University, Dallas, TX, United States of America
- * E-mail:
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Circular HDAC9/microRNA-138/Sirtuin-1 Pathway Mediates Synaptic and Amyloid Precursor Protein Processing Deficits in Alzheimer's Disease. Neurosci Bull 2019; 35:877-888. [PMID: 30887246 DOI: 10.1007/s12264-019-00361-0] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 12/12/2018] [Indexed: 01/27/2023] Open
Abstract
Synaptic dysfunction and abnormal processing of amyloid precursor protein (APP) are early pathological features in Alzheimer's disease (AD). Recently, non-coding RNAs such as microRNAs (miRNAs) and circular RNAs (circRNAs) have been reported to contribute to the pathogenesis of AD. We found an age-dependent elevation of miR-138 in APP/PS1 (presenilin-1) mice. MiR-138 inhibited the expression of ADAM10 [a disintegrin and metalloproteinase domain-containing protein 10], promoted amyloid beta (Aβ) production, and induced synaptic and learning/memory deficits in APP/PS1 mice, while its suppression alleviated the AD-like phenotype in these mice. Overexpression of sirtuin 1 (Sirt1), a target of miR-138, ameliorated the miR-138-induced inhibition of ADAM10 and elevation of Aβ in vitro. The circRNA HDAC9 (circHDAC9) was predicted to contain a miR-138 binding site in several databases. Its expression was inversely correlated with miR-138 in both Aβ-oligomer-treated N2a cells and APP/PS1 mice, and it co-localized with miR-138 in the cytoplasm of N2a cells. CircHDAC9 acted as a miR-138 sponge, decreasing miR-138 expression, and reversing the Sirt1 suppression and excessive Aβ production induced by miR-138 in vitro. Moreover, circHDAC9 was decreased in the serum of both AD patients and individuals with mild cognitive impairment. These results suggest that the circHDAC9/miR-138/Sirt1 pathway mediates synaptic function and APP processing in AD, providing a potential therapeutic target for its treatment.
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Cao K, Dong YT, Xiang J, Xu Y, Hong W, Song H, Guan ZZ. Reduced expression of SIRT1 and SOD-1 and the correlation between these levels in various regions of the brains of patients with Alzheimer's disease. J Clin Pathol 2018; 71:1090-1099. [PMID: 30185534 DOI: 10.1136/jclinpath-2018-205320] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/03/2018] [Accepted: 08/18/2018] [Indexed: 12/16/2022]
Abstract
AIMS This study was designed to explore the expression and distribution of silent information regulator 1 (SIRT1) and superoxide dismutase 1 (SOD-1) in various regions of the brains of patients with Alzheimer's disease (AD), as well as to assess potential correlations between the levels of these proteins and also between these proteins and the Braak stage of AD. METHODS In the temporal and frontal cortices, hippocampus and cerebellum of 10 patients with AD and 10 age-matched control subjects, expression of SIRT1 and SOD-1, together with histopathology, were assessed by immunohistochemical and immunofluorescent stainings. Relationships between variables were examined with the Pearson correlation test. RESULTS The numbers of both SIRT1-positive and SOD-1-positive neurons and integrated optical density of immunohistochemical staining for these proteins in the temporal and frontal cortices, and hippocampus of patients with AD were significantly decreased than those in corresponding controls. In the case of the cerebellum, very weak expression of SIRT1 and obvious expression of SOD-1 were observed in granule cells, with no significant difference between AD and the control group. Interestingly, the protein levels between SIRT1 and SOD-1, as well as the level of SIRT1 or SOD-1 and Braak stage, were significantly correlated in neurons in all regions of the AD brains investigated except for the cerebellum. CONCLUSIONS These findings indicate that the reduced level of SIRT1 in the brains of patients with AD may be related to the decline in SOD-1 and neuropathological changes of this disorder.
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Affiliation(s)
- Kun Cao
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Yang-Ting Dong
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jie Xiang
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Yi Xu
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China.,Key Laboratory of Medical Molecular Biology, Guiyang, China
| | - Hui Song
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China.,Key Laboratory of Medical Molecular Biology, Guiyang, China
| | - Zhi-Zhong Guan
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, China .,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, China.,Key Laboratory of Medical Molecular Biology, Guiyang, China
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