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Ji Y, Tian Y, Zhang H, Ma S, Liu Z, Tian Y, Xu Y. Histone modifications in hypoxic ischemic encephalopathy: Implications for therapeutic interventions. Life Sci 2024; 354:122983. [PMID: 39147319 DOI: 10.1016/j.lfs.2024.122983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 08/09/2024] [Accepted: 08/12/2024] [Indexed: 08/17/2024]
Abstract
Hypoxic-ischemic encephalopathy (HIE) is a brain injury induced by many causes of cerebral tissue ischemia and hypoxia. Although HIE may occur at many ages, its impact on the neonatal brain is greater because it occurs during the formative stage. Recent research suggests that histone modifications may occur in the human brain in response to acute stress events, resulting in transcriptional changes and HIE development. Because there are no safe and effective therapies for HIE, researchers have focused on HIE treatments that target histone modifications. In this review, four main histone modifications are explored, histone methylation, acetylation, phosphorylation, and crotonylation, as well as their relevance to HIE. The efficacy of histone deacetylase inhibitors in the treatment of HIE is also explored. In conclusion, targeting histone modifications may be a novel strategy for elucidating the mechanism of HIE, as well as a novel approach to HIE treatment.
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Affiliation(s)
- Yichen Ji
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ye Tian
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Huiyi Zhang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shuai Ma
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhongwei Liu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yue Tian
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ying Xu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China.
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2
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Kim JS, Kim MH, Kim MJ, Kim HJ. Licochalcone A attenuates NMDA-induced neurotoxicity. Anim Cells Syst (Seoul) 2024; 28:392-400. [PMID: 39139398 PMCID: PMC11321100 DOI: 10.1080/19768354.2024.2389823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 07/03/2024] [Accepted: 08/01/2024] [Indexed: 08/15/2024] Open
Abstract
This study investigates the effect of Licochalcone A (Lico-A), a flavonoid from licorice roots known for its anti-inflammatory, anti-cancer, and antioxidant properties, on NMDA-induced neurotoxicity in primary cultured rat hippocampal neurons. The study measured cell survival following NMDA and Lico-A exposure, revealing that Lico-A at a 2.5 μg/ml significantly improved cell viability, countering the detrimental effects of NMDA. The study also analyzed synaptic changes by examining both postsynaptic density 95 (PSD95) and synaptophysin-targeted imaging, showing that Lico-A treatment resulted in a significant increase in synaptic puncta, contrasting with the reduction observed under NMDA exposure. Furthermore, levels of phosphorylated mixed lineage kinase domain-like pseudokinase (P-MLKL) and phosphorylated receptor-interacting serine/threonine-protein kinase 3 (P-RIP3), key necroptosis regulators, were measured using Western blotting. The results showed an increase in P-MLKL and P-RIP3 in neurons exposed to NMDA, which was reduced following Lico-A treatment. The response of astrocyte and microglia was also evaluated by immunostaining for glial fibrillary acidic protein (GFAP), ionized calcium-binding adaptor molecule 1 (IBA-1) and tumor necrosis factor alpha (TNF-α). These markers exhibited heightened expression in the NMDA group, which was substantially reduced by Lico-A treatment. These findings suggest that Lico-A has neuroprotective effects against NMDA-induced neurotoxicity, potentially contributing to synaptic preservation, inhibition of neuronal necroptosis, and modulation of glial activation. Therefore, Lico-A shows promise as a neuroprotective agent for conditions associated with NMDA-related neurotoxicity.
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Affiliation(s)
- Jae Soo Kim
- Department of Medical Laser, Graduate School, Dankook University, Cheonan, Republic of Korea
| | - Mi-Hye Kim
- Department of Medical Laser, Graduate School, Dankook University, Cheonan, Republic of Korea
| | - Myeung Ju Kim
- Department of Anatomy, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Hee Jung Kim
- Department of Physiology, College of Medicine, Center for Human Risk Assessment, Dankook University, Cheonan, Republic of Korea
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3
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Mike JK, White Y, Hutchings RS, Vento C, Ha J, Iranmahboub A, Manzoor H, Gunewardena A, Cheah C, Wang A, Goudy BD, Lakshminrusimha S, Long-Boyle J, Fineman JR, Ferriero DM, Maltepe E. Effect of Clemastine on Neurophysiological Outcomes in an Ovine Model of Neonatal Hypoxic-Ischemic Encephalopathy. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1728. [PMID: 38002819 PMCID: PMC10670092 DOI: 10.3390/children10111728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 11/26/2023]
Abstract
Originally approved by the U.S. Food and Drug Administration (FDA) for its antihistamine properties, clemastine can also promote white matter integrity and has shown promise in the treatment of demyelinating diseases such as multiple sclerosis. Here, we conducted an in-depth analysis of the feasibility, safety, and neuroprotective efficacy of clemastine administration in near-term lambs (n = 25, 141-143 days) following a global ischemic insult induced via an umbilical cord occlusion (UCO) model. Lambs were randomly assigned to receive clemastine or placebo postnatally, and outcomes were assessed over a six-day period. Clemastine administration was well tolerated. While treated lambs demonstrated improvements in inflammatory scores, their neurodevelopmental outcomes were unchanged.
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Affiliation(s)
- Jana Krystofova Mike
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Yasmine White
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Rachel S. Hutchings
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Christian Vento
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Janica Ha
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Ariana Iranmahboub
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Hadiya Manzoor
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Anya Gunewardena
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Cheryl Cheah
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
| | - Aijun Wang
- Department of Biomedical Engineering, University of California Davis, Davis, CA 95817, USA;
| | - Brian D. Goudy
- Department of Pediatrics, University of California Davis, Davis, CA 95817, USA (S.L.)
| | | | - Janel Long-Boyle
- School of Pharmacy, University of California San Francisco, San Francisco, CA 94143, USA
- Initiative for Pediatric Drug and Device Development, San Francisco, CA 94143, USA
| | - Jeffrey R. Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
- Initiative for Pediatric Drug and Device Development, San Francisco, CA 94143, USA
| | - Donna M. Ferriero
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
- Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA 94158, USA
| | - Emin Maltepe
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94158, USA (R.S.H.); (A.I.); (C.C.); (D.M.F.)
- Initiative for Pediatric Drug and Device Development, San Francisco, CA 94143, USA
- Department of Biomedical Sciences, University of California San Francisco, San Francisco, CA 94143, USA
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4
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Lin JH, Yang KT, Ting PC, Lee WS, Lin DJ, Chang JC. Licochalcone a improves cardiac functions after ischemia-reperfusion via reduction of ferroptosis in rats. Eur J Pharmacol 2023; 957:176031. [PMID: 37660967 DOI: 10.1016/j.ejphar.2023.176031] [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: 07/07/2023] [Revised: 08/22/2023] [Accepted: 08/28/2023] [Indexed: 09/05/2023]
Abstract
Myocardial ischemia-reperfusion (I/R) injury triggers several cell death types, including apoptosis, autophagy, and ferroptosis. Licochalcone A (LCA), a natural flavonoid compound isolated from the root of Glycyrrhiza glabra, has been demonstrated to exert potential pharmacological benefits, such as antioxidant, antitumor, and anti-inflammatory activities. The present study aimed to investigate the involvement of ferroptosis in the pathogenesis of I/R and determine whether LCA can inhibit ferroptosis to prevent the myocardial I/R injury in rats. The effects of LCA on myocardial I/R injury were detected by examining the left ventricular-developed pressure and triphenyltetrazolium chloride staining. We conducted Western blotting analyses, ELISA assay, and quantitative real-time PCR to determine the levels of ferroptosis-related molecules. To demonstrate the cardioprotective effect of LCA in vitro, H9c2 and primary neonatal rat cardiomyocytes were co-treated with ferroptosis inducers (erastin, RSL3, or Fe-SP) and LCA for 16 and 24 h. Our ex vivo study showed that LCA increased the cardiac contractility, and reduced the infarct volume and ferroptosis-related biomarkers in rat hearts after I/R. Moreover, LCA reduced the levels of ferroptosis inducers-induced reactive oxygen species generation, lipid peroxidation, and ferroptosis-related biomarkers in cultured H9c2 cells and cardiomyocytes. LCA also reduced the Fe-SP-increased nuclear factor erythroid 2-related factor 2 and heme oxygenase-1 protein levels in cultured cardiomyocytes. In the present study, we showed that the LCA-induced cardioprotective effects in attenuating the myocardial I/R injury were correlated with ferroptosis regulation, and provided a possible new therapeutic strategy for prevention or therapy of the myocardial I/R injury.
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Affiliation(s)
- Jian-Hong Lin
- Division of Experimental Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97002, Taiwan.
| | - Kun-Ta Yang
- Department of Physiology, School of Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Pei-Ching Ting
- PhD Program in Pharmacology and Toxicology, School of Medicine Tzu Chi University, Hualien 97004, Taiwan; Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97002, Taiwan
| | - Wen-Sen Lee
- Department of Physiology, School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Ding-Jyun Lin
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Jui-Chih Chang
- Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97002, Taiwan; Department of Surgery, School of Medicine, Tzu Chi University, Hualien 97004, Taiwan R.O.C.
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Olloquequi J, Ettcheto M, Cano A, Fortuna A, Bicker J, Sánchez-Lopez E, Paz C, Ureña J, Verdaguer E, Auladell C, Camins A. Licochalcone A: A Potential Multitarget Drug for Alzheimer's Disease Treatment. Int J Mol Sci 2023; 24:14177. [PMID: 37762479 PMCID: PMC10531537 DOI: 10.3390/ijms241814177] [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: 07/25/2023] [Revised: 09/08/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Licochalcone A (Lico-A) is a flavonoid compound derived from the root of the Glycyrrhiza species, a plant commonly used in traditional Chinese medicine. While the Glycyrrhiza species has shown promise in treating various diseases such as cancer, obesity, and skin diseases due to its active compounds, the investigation of Licochalcone A's effects on the central nervous system and its potential application in Alzheimer's disease (AD) treatment have garnered significant interest. Studies have reported the neuroprotective effects of Lico-A, suggesting its potential as a multitarget compound. Lico-A acts as a PTP1B inhibitor, enhancing cognitive activity through the BDNF-TrkB pathway and exhibiting inhibitory effects on microglia activation, which enables mitigation of neuroinflammation. Moreover, Lico-A inhibits c-Jun N-terminal kinase 1, a key enzyme involved in tau phosphorylation, and modulates the brain insulin receptor, which plays a role in cognitive processes. Lico-A also acts as an acetylcholinesterase inhibitor, leading to increased levels of the neurotransmitter acetylcholine (Ach) in the brain. This mechanism enhances cognitive capacity in individuals with AD. Finally, Lico-A has shown the ability to reduce amyloid plaques, a hallmark of AD, and exhibits antioxidant properties by activating the nuclear factor erythroid 2-related factor 2 (Nrf2), a key regulator of antioxidant defense mechanisms. In the present review, we discuss the available findings analyzing the potential of Lico-A as a neuroprotective agent. Continued research on Lico-A holds promise for the development of novel treatments for cognitive disorders and neurodegenerative diseases, including AD. Further investigations into its multitarget action and elucidation of underlying mechanisms will contribute to our understanding of its therapeutic potential.
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Affiliation(s)
- Jordi Olloquequi
- Departament of Biochemistry and Physiology, Physiology Section, Faculty of Pharmacy and Food Science, Universitat de Barcelona, Av. Joan XXIII 27/31, 08028 Barcelona, Spain
- Laboratory of Cellular and Molecular Pathology, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca 3460000, Chile
| | - Miren Ettcheto
- Departament of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Science, Universitat de Barcelona, 08028 Barcelona, Spain; (M.E.); (A.C.)
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Institute of Neuroscience, Universitat de Barcelona, 08028 Barcelona, Spain
- Institut d’Investigació Sanitària Pere Virgili (IISPV), 43005 Reus, Spain
| | - Amanda Cano
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Ace Alzheimer Center Barcelona, International University of Catalunya (UIC), 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), 08028 Barcelona, Spain
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Science, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Ana Fortuna
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (A.F.); (J.B.)
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), 3000-548 Coimbra, Portugal
| | - Joana Bicker
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (A.F.); (J.B.)
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), 3000-548 Coimbra, Portugal
| | - Elena Sánchez-Lopez
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Institute of Nanoscience and Nanotechnology (IN2UB), 08028 Barcelona, Spain
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Science, Universitat de Barcelona, 08028 Barcelona, Spain
- Unit of Synthesis and Biomedical Applications of Peptides, IQAC-CSIC, 08034 Barcelona, Spain
| | - Cristian Paz
- Laboratory of Natural Products & Drug Discovery, Center CEBIM, Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile;
| | - Jesús Ureña
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Institute of Neuroscience, Universitat de Barcelona, 08028 Barcelona, Spain
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Ester Verdaguer
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Institute of Neuroscience, Universitat de Barcelona, 08028 Barcelona, Spain
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Carme Auladell
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Institute of Neuroscience, Universitat de Barcelona, 08028 Barcelona, Spain
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Antoni Camins
- Departament of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Science, Universitat de Barcelona, 08028 Barcelona, Spain; (M.E.); (A.C.)
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain; (A.C.); (E.S.-L.); (J.U.); (E.V.); (C.A.)
- Institute of Neuroscience, Universitat de Barcelona, 08028 Barcelona, Spain
- Institut d’Investigació Sanitària Pere Virgili (IISPV), 43005 Reus, Spain
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Sulis PM, Bittencourt Mendes AK, Fernandes TA, Frederico MJS, Rey DP, Aragón M, Ruparelia KC, Silva FRMB. Signal transduction of the insulin secretion induced by the chalcone analogue, (E)-3-(phenyl)-1-(3,4,5-trimethoxyphenyl)prop-2-en-1-one, and its role in glucose and lipid metabolism. Biochimie 2023; 212:85-94. [PMID: 37080419 DOI: 10.1016/j.biochi.2023.04.006] [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: 07/06/2022] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/22/2023]
Abstract
A chalcone analogue, (E)-3-(phenyl)-1-(3,4,5-trimethoxyphenyl)prop-2-en-1-one (DMU 101), was synthesized using classic base catalysis and Claisen-Schmidt condensation, and then screened for its antidiabetic properties. The compound's effects on glucose and lipid metabolism were assayed in rats that were treated acutely and for a short time to elucidate its mechanism of action, evaluating glucose tolerance and lactate dehydrogenase activity in response to chalcone analogue administration. The chalcone's in vitro and ex vivo effects on glycogen, glucose, lipid and lipolysis were also investigated, as well as the mechanism by which it induces 45Ca2+ influx-mediated insulin secretion. The analogue (10 mg/kg) diminished glycemia, without inducing acute cell damage, increased glycogen content in the skeletal muscle and reduced serum triacylglycerol and total cholesterol, but did not alter high-density lipoprotein or low-density lipoprotein. Chalcone (10 μM) stimulated glucose uptake in the soleus muscle and did not modulate in vitro or ex vivo lipolysis. This analogue also increased insulin secretion by triggering calcium influx and blocking ATP-sensitive K+ channels and voltage-dependent calcium channels. However, it also modulated stored calcium via sarco/endoplasmic reticulum calcium ATPase (SERCA) and ryanodine receptor (RYR) activity. These findings indicate that this chalcone may induce cellular repolarization via a mechanism mediated by calcium-dependent potassium channels.
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Affiliation(s)
- Paola Miranda Sulis
- Federal University of Santa Catarina, University Campus, Trindade, 88040- 900, Florianópolis, SC, Brazil
| | | | - Thaís Alves Fernandes
- Federal University of Santa Catarina, University Campus, Trindade, 88040- 900, Florianópolis, SC, Brazil
| | - Marisa Jadna Silva Frederico
- Federal University of Ceará, Faculty of Medicine, Department of Pharmacology and Physiology, Drug Research and Development Center (NPDM), Laboratory of Biochemical Pharmacology, Rua Coronel Nunes de Melo, 1000 - Rodolfo Teófilo, 60430-275, Fortaleza, CE, Brazil
| | - Diana Patricia Rey
- Federal University of Santa Catarina, University Campus, Trindade, 88040- 900, Florianópolis, SC, Brazil; National University of Colombia, Department of Pharmacy, Faculty of Sciences, Cra. 30 No. 45-03, 111321, Bogotá, D. C, Colombia
| | - Marcela Aragón
- National University of Colombia, Department of Pharmacy, Faculty of Sciences, Cra. 30 No. 45-03, 111321, Bogotá, D. C, Colombia
| | - Ketan C Ruparelia
- De Montfort University, Faculty of Health & Life Sciences, Leicester School of Pharmacy, Leicester, LE1 9BH, United Kingdom
| | - Fátima Regina Mena Barreto Silva
- Federal University of Santa Catarina, University Campus, Trindade, 88040- 900, Florianópolis, SC, Brazil; Cellular Bioelectricity Center (NUBIOCEL), Center of Biological Sciences, University Campus, Trindade, 88040- 900, Florianópolis, SC, Brazil.
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7
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Zhang N, Zhang D, Zhang Q, Zhang R, Wang Y. Mechanism of Danggui Sini underlying the treatment of peripheral nerve injury based on network pharmacology and molecular docking: A review. Medicine (Baltimore) 2023; 102:e33528. [PMID: 37171334 PMCID: PMC10174355 DOI: 10.1097/md.0000000000033528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Abstract
Danggui Sini is a traditional Chinese medicine prescription for treating peripheral nerve injury (PNI). We studied the mechanisms of this decoction through network pharmacology analysis and molecular docking. Using R language and Perl software, the active components and predicted targets of Danggui Sini, as well as the related gene targets of PNI, were mined through TCMSP, GeneCards, OMIM, TTD, and DrugBank. The network diagram of active components and intersection targets was constructed using Cytoscape software and the STRING database. The CytoNCA plug-in was used to screen out the core compounds and key targets. The genes were analyzed for Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment. AutoDock was used to analyze the molecular docking of key targets and core compounds of diseases. The drug component disease target regulatory network showed that the key components included quercetin, kaempferol, naringenin, and licochalcone A, which play key roles in the whole network and may be the primary compounds associated with the action of Danggui Sini against PNI. PPI network topology analysis showed high degree values for RELA, JUN, MAPK1, RB1, and FOS. Enrichment analysis showed that the core targets of Danggui Sini participated in pathways associated with neurogenesis-multiple diseases. Molecular docking showed that the active ingredients in Danggui Sini had a good binding ability with key targets. We conclude that many active components of Danggui Sini play therapeutic roles in PNI treatment by regulating RELA, JUN, MAPK1, RB1, and FOS, and multiple other targets in inflammation, immunity, and lipid metabolism.
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Affiliation(s)
- Ning Zhang
- Heilongjiang University of Chinese Medicine, Harbin, China
- Dalian Port Hospital, Dalian, China
| | - Dandan Zhang
- The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
- Dalian Women and Children's MedicalGroup, Dalian, China
| | - Qian Zhang
- Heilongjiang University of Chinese Medicine, Harbin, China
- The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Ruisu Zhang
- Heilongjiang University of Chinese Medicine, Harbin, China
- The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yan Wang
- Heilongjiang University of Chinese Medicine, Harbin, China
- The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
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8
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Fang M, Su K, Wang X, Guan P, Hu X. Study on molecular mechanisms of destabilizing Aβ(1-42) protofibrils by licochalcone A and licochalcone B using molecular dynamics simulations. J Mol Graph Model 2023; 122:108500. [PMID: 37094420 DOI: 10.1016/j.jmgm.2023.108500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/30/2023] [Accepted: 04/17/2023] [Indexed: 04/26/2023]
Abstract
Amyloid-beta (Aβ) protofibrils are closely related to Alzheimer's disease. Their behaviors with or without the presence of Aβ fibrillization inhibitors have been intensively studied by molecular dynamics simulations. In this work, the molecular mechanisms of licochalcone A and licochalcone B on destabilizing Aβ(1-42) protofibrils are explored. It is found that both two licochalcones can disorder the configuration of the Aβ(1-42) protofibril. The stable interactions between the Aβ(1-42) protofibril and licochalcone A or licochalcone B are able to be formed. A reduction of the β-sheet structure contents and an increment of the random coil structures of Aβ(1-42) protofibril are observed in the presence of either licochalcone A or licochalcone B. The hydrogen bonds inside the Aβ(1-42) protofibril could be partially collapsed to varying degrees by two licochalcones. Furthermore, the van der Waals interactions between Aβ(1-42) protofibril and licochalcone A make an important contribution to the binding free energy, while the contribution of the electrostatic interactions between Aβ(1-42) protofibril and licochalcone B is more prominent in the binding affinity. Our work may help in the development of new drug candidates for disrupting the Aβ protofibril.
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Affiliation(s)
- Mei Fang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
| | - Kehe Su
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Xin Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Ping Guan
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
| | - Xiaoling Hu
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
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24-Hydroxycholesterol Induces Tau Proteasome-Dependent Degradation via the SIRT1/PGC1α/Nrf2 Pathway: A Potential Mechanism to Counteract Alzheimer’s Disease. Antioxidants (Basel) 2023; 12:antiox12030631. [PMID: 36978879 PMCID: PMC10044740 DOI: 10.3390/antiox12030631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/17/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Considerable evidence indicates that cholesterol oxidation products, named oxysterols, play a key role in several events involved in Alzheimer’s disease (AD) pathogenesis. Although the majority of oxysterols causes neuron dysfunction and degeneration, 24-hydroxycholesterol (24-OHC) has recently been thought to be neuroprotective also. The present study aimed at supporting this concept by exploring, in SK-N-BE neuroblastoma cells, whether 24-OHC affected the neuroprotective SIRT1/PGC1α/Nrf2 axis. We demonstrated that 24-OHC, through the up-regulation of the deacetylase SIRT1, was able to increase both PGC1α and Nrf2 expression and protein levels, as well as Nrf2 nuclear translocation. By acting on this neuroprotective pathway, 24-OHC favors tau protein clearance by triggering tau ubiquitination and subsequently its degradation through the ubiquitin–proteasome system. We also observed a modulation of SIRT1, PGC1α, and Nrf2 expression and synthesis in the brain of AD patients with the progression of the disease, suggesting their potential role in neuroprotection. These findings suggest that 24-OHC contributes to tau degradation through the up-regulation of the SIRT1/PGC1α/Nrf2 axis. Overall, the evidence points out the importance of avoiding 24-OHC loss, which can occur in the AD brain, and of limiting SIRT1, PGC1α, and Nrf2 deregulation in order to prevent the neurotoxic accumulation of hyperphosphorylated tau and counteract neurodegeneration.
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Li Y, Chen L, Zheng D, Liu JX, Liu C, Qi SH, Hu PC, Yang XF, Min JW. Echinocystic acid alleviated hypoxic-ischemic brain damage in neonatal mice by activating the PI3K/Akt/Nrf2 signaling pathway. Front Pharmacol 2023; 14:1103265. [PMID: 36843928 PMCID: PMC9947717 DOI: 10.3389/fphar.2023.1103265] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Neonatal hypoxic-ischemic encephalopathy (HIE) is considered a major cause of death and long-term neurological injury in newborns. Studies have demonstrated that oxidative stress and apoptosis play a major role in the progression of neonatal HIE. Echinocystic acid (EA), a natural plant extract, shows great antioxidant and antiapoptotic activities in various diseases. However, it has not yet been reported whether EA exerts a neuroprotective effect against neonatal HIE. Therefore, this study was undertaken to explore the neuroprotective effects and potential mechanisms of EA in neonatal HIE using in vivo and in vitro experiments. In the in vivo study, a hypoxic-ischemic brain damage (HIBD) model was established in neonatal mice, and EA was administered immediately after HIBD. Cerebral infarction, brain atrophy and long-term neurobehavioral deficits were measured. Hematoxylin and eosin (H&E), terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) and dihydroethidium (DHE) staining were performed, and the contents of malondialdehyde (MDA) and glutathione (GSH) were detected. In the in vitro study, an oxygen-glucose deprivation/reperfusion (OGD/R) model was employed in primary cortical neurons, and EA was introduced during OGD/R. Cell death and cellular ROS levels were determined. To illustrate the mechanism, the PI3K inhibitor LY294002 and Nrf2 inhibitor ML385 were used. The protein expression levels of p-PI3K, PI3K, p-Akt, Akt, Nrf2, NQO1, and HO-1 were measured by western blotting. The results showed that EA treatment significantly reduced cerebral infarction, attenuated neuronal injury, and improved brain atrophy and long-term neurobehavioral deficits in neonatal mice subjected to HIBD. Meanwhile, EA effectively increased the survival rate in neurons exposed to OGD/R and inhibited oxidative stress and apoptosis in both in vivo and in vitro studies. Moreover, EA activated the PI3K/Akt/Nrf2 pathway in neonatal mice following HIBD and in neurons after OGD/R. In conclusion, these results suggested that EA alleviated HIBD by ameliorating oxidative stress and apoptosis via activation of the PI3K/Akt/Nrf2 signaling pathway.
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Affiliation(s)
- Yuan Li
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China
| | - Ling Chen
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China
| | - Da Zheng
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China
| | - Jian-Xia Liu
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China
| | - Chao Liu
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China
| | - Shao-Hua Qi
- Department of Systems Medicine and Bioengineering, Houston Methodist Cancer Center, Weill Cornell Medicine, Houston, TX, United States
| | - Peng-Chao Hu
- Department of Oncology, Xiangyang No. 1 People’s Hospital, Hubei University of Medicine, Xiangyang, China
| | - Xiao-Fei Yang
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China
| | - Jia-Wei Min
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central Minzu University, Wuhan, China,*Correspondence: Jia-Wei Min,
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Liu X, Xiao G, Wang Y, Shang T, Li Z, Wang H, Pu L, He S, Shao R, Orgah JO, Zhu Y. Qishen Yiqi Dropping Pill facilitates post-stroke recovery of motion and memory loss by modulating ICAM-1-mediated neuroinflammation. Biomed Pharmacother 2022; 153:113325. [DOI: 10.1016/j.biopha.2022.113325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 06/09/2022] [Accepted: 06/22/2022] [Indexed: 11/28/2022] Open
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12
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Chlorogenic acid exerts neuroprotective effect against hypoxia-ischemia brain injury in neonatal rats by activating Sirt1 to regulate the Nrf2-NF-κB signaling pathway. Cell Commun Signal 2022; 20:84. [PMID: 35689269 PMCID: PMC9185968 DOI: 10.1186/s12964-022-00860-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 03/06/2022] [Indexed: 12/22/2022] Open
Abstract
Background Neonatal hypoxic-ischemic brain injury (HIE) is caused by perinatal asphyxia, which is associated with various confounding factors. Although studies on the pathogenesis and treatment of HIE have matured, sub-hypothermia is the only clinical treatment available for HIE. Previous evidence indicates that chlorogenic acid (CGA) exerts a potential neuroprotective effect on brain injury. However, the role of CGA on neonatal HI brain damage and the exact mechanism remains elusive. Here, we investigate the effects of CGA on HI models in vivo and in vitro and explore the underlying mechanism. Methods In the in vivo experiment, we ligated the left common carotid artery of 7-day-old rats and placed the rats in a hypoxic box for 2 h. We did not ligate the common carotid artery of the pups in the sham group since they did not have hypoxia. Brain atrophy and infarct size were evaluated by Nissl staining, HE staining and 2,3,5-triphenyltetrazolium chloride monohydrate (TTC) staining. Morris Water Maze test (MWM) was used to evaluate neurobehavioral disorders. Western-blotting and immunofluorescence were used to detect the cell signaling pathway. Malondialdehyde (MDA) content test, catalase (CAT) activity detection and Elisa Assay was used to detect levels of inflammation and oxidative stress. in vitro experiments were performed on isolated primary neurons. Result In our study, pretreatment with CGA significantly decreased the infarct volume of neonatal rats after HI, alleviated brain edema, and improved tissue structure in vivo. Moreover, we used the Morris water maze to verify CGA’s effects on enhancing the learning and cognitive ability and helping to maintain the long-term spatial memory after HI injury. However, Sirt1 inhibitor EX-527 partially reversed these therapeutic effects. CGA pretreatment inhibited neuronal apoptosis induced by HI by reducing inflammation and oxidative stress. The findings suggest that CGA potentially activates Sirt1 to regulate the Nrf2-NF-κB signaling pathway by forming complexes thereby protecting primary neurons from oxygen-glucose deprivation (OGD) damage. Also, CGA treatment significantly suppresses HI-induced proliferation of glial. Conclusion Collectively, this study uncovered the underlying mechanism of CGA on neonatal HI brain damage. CGA holds promise as an effective neuroprotective agent to promote neonatal brain recovery from HI-induced injury. Graphical Abstract ![]()
Video Abstract
Supplementary Information The online version contains supplementary material available at 10.1186/s12964-022-00860-0.
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Zhu H, Huang J, Chen Y, Li X, Wen J, Tian M, Ren J, Zhou L, Yang Q. Resveratrol pretreatment protects neurons from oxygen-glucose deprivation/reoxygenation and ischemic injury through inhibiting ferroptosis. Biosci Biotechnol Biochem 2022; 86:704-716. [PMID: 35357412 DOI: 10.1093/bbb/zbac048] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/19/2022] [Indexed: 12/14/2022]
Abstract
Ferroptosis, a newly discovered iron-dependent cell death, is involved in brain ischemia-reperfusion injury. Iron scavengers or ferroptosis inhibitors could reduce infarct volume and improve neurological function in mice. Resveratrol has neuroprotective and neurorestorative effects. However, it is unclear whether resveratrol can play a neuroprotective role via inhibiting ferroptosis. Our study showed that resveratrol pretreatment had a similar effect with ferrostatin‑1, which inhibited neuronal ferroptosis-related changes, such as iron overload, damages of oxidation-reduction system, and destruction of mitochondrial structure, after oxygen-glucose deprivation/reoxygenation (OGD/R) and application of ferroptosis inducers. In addition, middle cerebral artery occlusion/reperfusion (MCAO/R) injury in vivo also induced ferroptosis, and resveratrol pretreatment could inhibit ferroptosis and reduce degenerative neurons, cerebral ischemic damage and infarction volume. Our results are the first to indicate that resveratrol pretreatment might inhibit ferroptosis induced by OGD/R and ferroptosis inducers in neurons, and MCAO/R in rats.
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Affiliation(s)
- Huimin Zhu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiagui Huang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yue Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuemei Li
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jun Wen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Mingfen Tian
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiangxia Ren
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Li Zhou
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qin Yang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Bai Y, Wu H, Zhang J, Zhang S, Zhang Z, Wang H, Zhang Y, Shen Z. IL-22 Protects against Biliary Ischemia-Reperfusion Injury after Liver Transplantation via Activating STAT3 and Reducing Apoptosis and Oxidative Stress Levels In Vitro and In Vivo. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9635075. [PMID: 35592531 PMCID: PMC9113870 DOI: 10.1155/2022/9635075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/11/2022] [Accepted: 04/20/2022] [Indexed: 11/17/2022]
Abstract
Biliary complications are currently one of the leading causes of liver failure and patient death after liver transplantation and need to be solved urgently. Biliary ischemia-reperfusion injury (IRI) is one of the important causes of biliary complications. IL-22 has a protective effect on liver injury and hepatitis diseases, and its safety and efficacy in the treatment of hepatitis have also been proved in human clinical experiments. Furthermore, multiple studies have confirmed that IL-22 promotes the proliferation and repair of epithelial cells in various organs. Still, its function in the bile duct after transplantation has not been explored. This study was aimed at investigating the effects of IL-22 on cholangiocyte IRI in vitro and in vivo and exploring its underlying mechanisms. We simulated the hypoxia process of bile duct epithelial cells through in vitro experiments to investigate the protective function and molecular mechanism of IL-22 on bile duct epithelial cells. Subsequently, the function and mechanism of IL-22 in the biliary IRI model of autologous orthotopic liver transplantation in rats were assessed. This study confirmed that IL-22 could promote cholangiocyte proliferation, decrease the apoptosis rate of cholangiocytes and tissues, decrease MDA levels, and increase SOD levels by activating STAT3. In addition, IL-22 can also reduce the level of mitochondrial membrane depolarization, protect mitochondria, reduce ROS production, and play a role in protecting bile ducts. These findings provide evidence for IL-22 as a novel and effective treatment for biliary IRI after liver transplantation.
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Affiliation(s)
- Yi Bai
- Department of Hepatobiliary Surgery, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin, China
| | - Hao Wu
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Jinrui Zhang
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Sai Zhang
- School of Medicine, Nankai University, Tianjin, China
- Department of Organ Transplantation, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin 300192, China
| | - Zhixin Zhang
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Hao Wang
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Yamin Zhang
- Department of Hepatobiliary Surgery, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin, China
| | - Zhongyang Shen
- Department of Organ Transplantation, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin 300192, China
- Key Laboratory of Transplant Medicine, Chinese Academy of Medical Sciences, Tianjin, China
- National Health Commission's Key Laboratory for Critical Care Medicine, Tianjin, China
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Deniz FSŞ, Eren G, Orhan IE. Flavonoids as Sirtuin Modulators. Curr Top Med Chem 2022; 22:790-805. [PMID: 35466876 DOI: 10.2174/1568026622666220422094744] [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] [Received: 02/03/2022] [Revised: 03/03/2022] [Accepted: 03/06/2022] [Indexed: 11/22/2022]
Abstract
Sirtuins (SIRTs) are described as NAD+-dependent deacetylases, also known as class III histone deacetylases. So far, seven sirtuin genes (SIRTS 1-7) have been identified and characterized in mammals and also known to occur in bacteria and eukaryotes. SIRTs are involved in various biological processes including endocrine system, apoptosis, aging and longevity, diabetes, rheumatoid arthritis, obesity, inflammation, etc. Among them, the best characterized one is SIRT1. Actually, small molecules seem to be the most effective SIRT modulators. Flavonoids have been reported to possess many positive effects favrable for human health, while a relatively less research has been reported so far on their funcions as SIRT modulation mechanisms. In this regard, we herein aimed to focus on modulatory effects of flavonoids on SIRTs as the most common secondary metabolites in natural products. Our literature survey covering the years of 2006-2021 pointed out that flavonoids frequently interact with SIRT1 and SIRT3 followed by SIRT6. It can be also concluded that some popular flavonoid derivatives, e.g. resveratrol, quercetin, and catechin derivatives came forward in terms of SIRT modulation.
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Affiliation(s)
| | - Gökçen Eren
- Faculty of Pharmacy, Gazi University, 06330 Ankara
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16
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Zhu L, Lu F, Zhang X, Liu S, Mu P. SIRT1 Is Involved in the Neuroprotection of Pterostilbene Against Amyloid β 25-35-Induced Cognitive Deficits in Mice. Front Pharmacol 2022; 13:877098. [PMID: 35496289 PMCID: PMC9047953 DOI: 10.3389/fphar.2022.877098] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by amyloid-β (Aβ) deposits and neurofibrillary tangles. Pterostilbene (PTE), a bioactive component mainly in blueberries, is found to have neuroprotective properties. However, the specific underlying mechanisms of PTE in protecting AD remain unclear. Herein, we explored its effects on Aβ25-35-induced neuronal damage in vivo and in vitro and further compared the roles with its structural analog resveratrol (RES) in improving learning-memory deficits. We found that intragastric administration of PTE (40 mg/kg) displayed more effective neuroprotection on Aβ25-35-induced cognitive dysfunction assessed using the novel object test, Y-maze test, and Morris water maze test. Then, we found that PTE improved neuronal plasticity and alleviated neuronal loss both in vivo and in vitro. Additionally, PTE upregulated the expression of sirtuin-1 (SIRT1) and nuclear factor erythroid 2-related factor 2 (Nrf2) and the level of superoxide dismutase (SOD), and inhibited mitochondria-dependent apoptosis in the Aβ25-35-treated group. However, SIRT1 inhibitor EX527 reversed the neuroprotection and induced a drop in mitochondrial membrane potential in PTE-treated primary cortical neurons. Our data suggest that PTE's enhancing learning-memory ability and improving neuroplasticity might be related to inhibiting mitochondria-dependent apoptosis via the antioxidant effect regulated by SIRT1/Nrf2 in AD.
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Affiliation(s)
- Lin Zhu
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, Shenyang, China
| | - Fangjin Lu
- Department of Pharmacology, Shenyang Medical College, Shenyang, China
| | - Xiaoran Zhang
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, Shenyang, China
| | - Siyuan Liu
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, Shenyang, China
| | - Ping Mu
- Department of Physiology, Shenyang Medical College, Shenyang, China
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Yang G, Xue Z, Zhao Y. MiR-582-5p attenuates neonatal hypoxic-ischemic encephalopathy by targeting high mobility group box 1 (HMGB1) through inhibiting neuroinflammation and oxidative stress. Curr Neurovasc Res 2021; 18:295-301. [PMID: 34751119 DOI: 10.2174/1567202618666211109102740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 05/26/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND MiR-582-5p has been demonstrated to protect against ischemic stroke. However, its implication in the progression of neonatal hypoxic-ischemic encephalopathy (HIE) has not been explored. METHODS In this study, we used an in vitro model of oxygen-glucose deprivation (OGD) to investigate the protective effect of miR-582-5p on PC12 cells. OGD-induced inhibition of cell viability and promotion of cell death was assessed by CCK-8 assay and flow cytometry. Real-time PCR and enzyme-linked immunosorbent assay (ELISA) were utilized to examine the levels of inflammatory cytokines. The effects of miR-582-5p on OGD-induced oxidative injury were assessed by the determination of oxidative stress indicators. Furthermore, dual-luciferase reporter assay and gain-offunction assay were used to determine the mechanism of miR-582-5p in OGD-induced cell injury. RESULTS The expression of miR-582-5p was reduced upon OGD treatment in PC12 cells. Overexpression of miR-582-5p inhibited OGD-induced PC12 cell injury by regulating cell viability, apoptosis, inflammatory responses, and oxidative stress. MiR-582-5p targeted and negatively regulated high mobility group box 1 (HMGB1). MiR-582-5p presented protective effects on OGD-induced PC12 cell injury by targeting HMGB1. CONCLUSION Our results indicated that miR-582-5p ameliorates neuronal injury by inhibiting apoptosis, inflammation, and oxidative stress through targeting HMGB1.
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Affiliation(s)
- Guang Yang
- Department of pediatrics, Shanxi Medical University, Taiyuan, Shanxi, 030001. China
| | - Zhimin Xue
- Department of neonatal medicine, Shanxi children's Hospital, Taiyuan, Shanxi, 030013. China
| | - Yuan Zhao
- Department of neonatal medicine, Shanxi children's Hospital, Taiyuan, Shanxi, 030013. China
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Gupta R, Ambasta RK, Kumar P. Multifaced role of protein deacetylase sirtuins in neurodegenerative disease. Neurosci Biobehav Rev 2021; 132:976-997. [PMID: 34742724 DOI: 10.1016/j.neubiorev.2021.10.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/28/2021] [Accepted: 10/28/2021] [Indexed: 01/07/2023]
Abstract
Sirtuins, a class III histone/protein deacetylase, is a central regulator of metabolic function and cellular stress response. This plays a pivotal role in the pathogenesis and progression of diseases such as cancer, neurodegeneration, metabolic syndromes, and cardiovascular disease. Sirtuins regulate biological and cellular processes, for instance, mitochondrial biogenesis, lipid and fatty acid oxidation, oxidative stress, gene transcriptional activity, apoptosis, inflammatory response, DNA repair mechanism, and autophagic cell degradation, which are known components for the progression of the neurodegenerative diseases (NDDs). Emerging evidence suggests that sirtuins are the useful molecular targets against NDDs like, Alzheimer's Disease (AD), Parkinson's Disease (PD), Huntington's Disease (HD), and Amyotrophic Lateral Sclerosis (ALS). However, the exact mechanism of neuroprotection mediated through sirtuins remains unsettled. The manipulation of sirtuins activity with its modulators, calorie restriction (CR), and micro RNAs (miR) is a novel therapeutic approach for the treatment of NDDs. Herein, we reviewed the current putative therapeutic role of sirtuins in regulating synaptic plasticity and cognitive functions, which are mediated through the different molecular phenomenon to prevent neurodegeneration. We also explained the implications of sirtuin modulators, and miR based therapies for the treatment of life-threatening NDDs.
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Affiliation(s)
- Rohan Gupta
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India
| | - Rashmi K Ambasta
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India
| | - Pravir Kumar
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India.
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Zhou B, Wang H, Zhang B, Zhang L. Licochalcone B attenuates neuronal injury through anti-oxidant effect and enhancement of Nrf2 pathway in MCAO rat model of stroke. Int Immunopharmacol 2021; 100:108073. [PMID: 34454290 DOI: 10.1016/j.intimp.2021.108073] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 07/26/2021] [Accepted: 08/11/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Investigating anti-oxidant therapies that lead to the diminution of oxidative injury is priority in clinical. We herein aimed to explore whether and how Licochalcone B (Lico B) act as an anti-oxidant in the stroke model. METHODS Middle cerebral artery occlusion (MCAO) was constructed as stroke model and exposed to various doses of Lico B. Behavioral tests and neurological behavior status were detected for neurological function examination. Histological staining was used for evaluating cerebral injury, and neuronal apoptosis or damage. Levels of oxidative stress and inflammation were also assessed by biochemical analysis and expression analysis. Nrf2 knockdown induced by lentiviral vector was used for the research on mechanism. RESULTS Lico B had improvement effects on cerebral infarction size, memory impairments, and neurological deficits after MCAO. Histological evaluation also revealed the amelioration of neuronal injury and apoptosis by Lico B, along with down-regulation of apoptosis-related proteins. Additionally, Lico B rescued the down-regulation of BDNF and NGF after MCAO. Moreover, Lico B suppressed the oxidative stress and inflammation, manifesting as the enhancement of SOD, GSH and IL-4, but the decline of MDA, iNOS, and TNF-α. Finally, Nrf2 knockdown reversed the Lico B-caused improvement in neuronal injury, apoptosis and oxidative stress levels. CONCLUSIONS The present study revealed the neuroprotective effects of Lico B in MCAO rats. Importantly, we proposed a potential mechanism that Lico B activated the Nrf2 pathway, thereby acting as anti-oxidant to attenuate neuronal injury and apoptosis after stroke. The proposed mechanism provided an encouraging possibility for anti-oxidant therapy of stroke.
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Affiliation(s)
- Baosheng Zhou
- Department of Neurosurgery, Tianjin First Central Hospital, Tianjin, China
| | - Honglin Wang
- Department of Interventional Medicine, Dazhou Central Hospital, Dazhou, China
| | - Bo Zhang
- Department of Neurosurgery, The people's hospital of Zhao Yuan city, Zhao Yuan, China
| | - Lianlian Zhang
- Department of Ultrasonography, The Fourth Affiliated Hospital of Nantong University, The First people's Hospital of Yancheng, Yancheng, Jiangsu Province, China.
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Li Y, Zhang Y, Wu X, Gao Y, Guo J, Tian Y, Lin Z, Wang X. Discovery of natural 15-LOX small molecule inhibitors from Chinese herbal medicine using virtual Screening, biological evaluation and molecular dynamics studies. Bioorg Chem 2021; 115:105197. [PMID: 34426159 DOI: 10.1016/j.bioorg.2021.105197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/15/2021] [Accepted: 07/18/2021] [Indexed: 11/19/2022]
Abstract
Chinese herbal medicines (CHM) are frequently used to treat different types of inflammatory diseases and 15-Lipoxygenase (15-LOX) is a critical target enzyme for treating various inflammatory diseases. In this study, natural 15-LOX inhibitors were identified in CHM using an approach of virtual screening combined with the biological assays. First, an in-house Chinese medicine database containing 360 compounds was screened using a virtual screening approach based on pharmacophore and molecular docking to uncover several novel potential 15-LOX inhibitors. Secondly, the inhibitory effect of virtual screening hits against the 15-LOX enzyme was validated in an in vitro enzyme inhibition assay. Then, a tumor necrosis factor-α (TNF-α) release assay was carried out to explore the anti-inflammatory response of the active compounds. Furthermore, molecular dynamics (MD) simulation and binding free energy calculation were applied to analyze the process of inhibitors binding and also compared the mode of binding of the inhibitors by using the Molecular Mechanics-Generalized Born Surface Area (MM/GBSA) method. Finally, licochalcone B and eriodictyol were confirmed as inhibitors of the 15-LOX enzyme with IC50 values of 9.67 and 18.99 μM, respectively. In vitro cell-based assay showed that licochalcone B and eriodictyol inhibited the release of TNF-α factor in RAW264.7 cells stimulated by lipopolysaccharides (LPS) in a dose-dependent manner. Molecular dynamics and binding free energy analysis showed that the two 15-LOX-ligand systems immediately attained equilibrium with almost 1 Å fluctuation, the calculated binding free energies were found around -18.89 and -12.96 kcal/mol for licochalcone B and eriodictyol, respectively. Thr412, Arg415, Val420, Thr429, Ile602 and Trp606 were the main amino acid residues for the inhibition of 15-LOX enzyme activity. The current study confirms that licochalcone B and eriodictyol are 15-LOX inhibitors and can suppress the release of the TNF-α factor in RAW264.7 cells stimulated by LPS, thus providing a basis for the follow-up research and development for 15-LOX inhibitors.
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Affiliation(s)
- Yatong Li
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China
| | - Yuxin Zhang
- Key Laboratory of Ethnomedicine, School of Pharmacy, Ministry of Education, Minzu University of China, Haidian District, Beijing 100081, China
| | - Xia Wu
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China; Beijing Key Lab of Traditional Chinese Medicine Collateral Disease Theory Research, Capital Medical University, Fengtai District, Beijing 100069, China
| | - Yanbin Gao
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China; Beijing Key Lab of Traditional Chinese Medicine Collateral Disease Theory Research, Capital Medical University, Fengtai District, Beijing 100069, China
| | - Junfang Guo
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China
| | - Yulang Tian
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China
| | - Ziyue Lin
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China
| | - Xing Wang
- School of Traditional Chinese Medicine, Capital Medical University, Fengtai District, Beijing 100069, China; Beijing Key Lab of Traditional Chinese Medicine Collateral Disease Theory Research, Capital Medical University, Fengtai District, Beijing 100069, China.
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21
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Liu L, Zheng B, Wang Z. Protective effects of the knockdown of lncRNA AK139328 against oxygen glucose deprivation/reoxygenation-induced injury in PC12 cells. Mol Med Rep 2021; 24:621. [PMID: 34212979 PMCID: PMC8261620 DOI: 10.3892/mmr.2021.12260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 02/02/2021] [Indexed: 01/14/2023] Open
Abstract
Cerebral ischemic stroke is a major cause of adult morbidity and mortality worldwide. Several long non-coding RNAs (lncRNAs) have been reported to participate in cerebral ischemia/reperfusion injury (IRI). However, to the best of our knowledge, the role of lncRNA AK139328 in cerebral ischemic stroke remains poorly understood. The present study aimed to determine the expression and function of lncRNA AK139328 in the progression of IRI. PC12 cells were injured by oxygen glucose deprivation/reoxygenation (OGD/R) to establish an in vitro ischemic stroke model. An MTT assay was performed to determine cell viability. Reverse transcription-quantitative PCR was used to analyze the expression levels of AK139328 and Netrin-1 in blood samples from patients who had suffered a cerebral ischemic stroke and healthy individuals or OGD/R PC12 cells. ELISAs were used to determine the levels of inflammatory cytokines. In addition, oxidative stress levels and the levels of cell apoptosis were evaluated by reactive oxygen species (ROS) kits, flow cytometry and western blotting. Immunofluorescence staining was used for the detection of cell neurite outgrowth. The results of the present study revealed that AK139328 expression levels were upregulated in patients who had suffered a cerebral ischemic stroke and in PC12 cells following stimulation with OGD/R. The knockdown of AK139328 alleviated OGD/R-induced decreases in cell viability, downregulation in Netrin-1 expression and increases in inflammatory cytokines levels, including TNF-α, IL-1β and IL-6. Moreover, AK139328 silencing suppressed oxidative stress and cell apoptosis in OGD/R-treated PC12 cells. Furthermore, the expression levels of microtubule associated protein 2 and growth associated protein 43 in OGD/R-injured PC12 cells were upregulated following the knockdown of AK139328 expression. In conclusion, these findings suggested that the knockdown of AK139328 expression may protect PC12 cells against OGD/R injury by regulating inflammatory responses, oxidative stress and cell apoptosis. The data suggested a potential therapeutic target for the diagnosis and treatment of cerebral ischemic stroke.
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Affiliation(s)
- Liyan Liu
- Department of Neurology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, Jiangsu 222042, P.R. China
| | - Bin Zheng
- Department of Nephrology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, Jiangsu 222042, P.R. China
| | - Zhaoxia Wang
- Department of Neurology, Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu 225002, P.R. China
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22
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Li P, Yu C, Zeng FS, Fu X, Yuan XJ, Wang Q, Fan C, Sun BL, Sun QS. Licochalcone A Attenuates Chronic Neuropathic Pain in Rats by Inhibiting Microglia Activation and Inflammation. Neurochem Res 2021; 46:1112-1118. [PMID: 33555527 DOI: 10.1007/s11064-021-03244-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 11/16/2020] [Accepted: 01/09/2021] [Indexed: 12/30/2022]
Abstract
Immune response plays a vital role in the pathogenesis of neuropathic pain. Immune response-targeted therapy becomes an effective strategy for treating neuropathic pain. Licochalcone A (Lic-A) possesses anti-inflammatory and neuroprotective effects. However, the potential of Lic-A to attenuate neuropathic pain has not been well explored. To investigate the protective effect and evaluate the underlying mechanism of Lic-A against neuropathic pain in a rat model. Chronic constriction injury (CCI) surgery was employed in rats to establish neuropathic pain model. Rats were intraperitoneally administrated with Lic-A (1.25, 2.50 and 5.00 mg/kg) twice daily. Mechanical withdrawal threshold and thermal withdrawal latency were used to evaluate neuropathic pain. After administration, the lumbar spinal cord enlargement of rats was collected for ELISA, Western blot and immunofluorescence analysis. Mechanical withdrawal threshold and thermal withdrawal latency results showed that Lic-A significantly attenuated CCI-evoked neuropathic pain in dose-dependent manner. Lic-A administration also effectively blocked microglia activation. Moreover, Lic-A suppressed p38 phosphorylation and the release of inflammatory factors such as tumor necrosis factor-α, interleukin-1 and interleukin-6. Our findings provide evidence that Lic-A may have the potential to attenuate CCI-evoked neuropathic pain in rats by inhibiting microglia activation and inflammatory response.
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Affiliation(s)
- Ping Li
- Department of Rehabilitation, the Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Avenue, Jinan, 250033, Shandong, China
- Taian City Central Hospital, Taian, 271000, Shandong, China
| | - Chao Yu
- Taian City Central Hospital, Taian, 271000, Shandong, China
| | - Fan-Shuo Zeng
- Department of Rehabilitation, the Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Avenue, Jinan, 250033, Shandong, China
| | - Xiaoyan Fu
- Department of Neurology, Key Laboratory of Cerebral Microcirculation in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, No. 2, Yingsheng East Road, Taian, 271000, Shandong, China
| | - Xiao-Jing Yuan
- Taian City Central Hospital, Taian, 271000, Shandong, China
| | - Qin Wang
- Taian City Central Hospital, Taian, 271000, Shandong, China
| | - Cundong Fan
- Department of Neurology, Key Laboratory of Cerebral Microcirculation in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, No. 2, Yingsheng East Road, Taian, 271000, Shandong, China
| | - Bao-Liang Sun
- Department of Neurology, Key Laboratory of Cerebral Microcirculation in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, No. 2, Yingsheng East Road, Taian, 271000, Shandong, China.
| | - Qiang-San Sun
- Department of Rehabilitation, the Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Avenue, Jinan, 250033, Shandong, China.
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23
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Li C, Zhang Y, Liu R, Mai Y. Anagliptin Protected against Hypoxia/Reperfusion-Induced Brain Vascular Endothelial Permeability by Increasing ZO-1. ACS OMEGA 2021; 6:7771-7777. [PMID: 33778288 PMCID: PMC7992143 DOI: 10.1021/acsomega.1c00242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 02/22/2021] [Indexed: 05/17/2023]
Abstract
BACKGROUND AND PURPOSE Cerebral ischemia-reperfusion injury is commonly induced during the treatment of ischemic stroke and is reported to be related to the blood-brain barrier destruction and brain vascular endothelial cell dysfunction. Anagliptin is a novel antidiabetic agent recently reported to protect neurons from oxidative stress. In the present study, we aim to investigate the protective property of anagliptin against oxygen-glucose deprivation and reperfusion (OGD/R)-induced injury on endothelial cells and clarify the potential underlying mechanism. METHODS OGD/R modeling was established on bEnd.3 brain endothelial cells. Cell viability was detected using the MTT assay, and the mitochondrial reactive oxygen species (ROS) level was measured using the mitoses red staining assay. The endothelial monolayer permeability was determined using an FITC-dextran permeation assay. The expression levels of NOX-4 and ZO-1 were evaluated using qRT-PCR and Western blot assays. The expressions of MLC-2, p-MLC-2, and myosin light chain kinase (MLCK) were determined using Western blot. RESULTS First, the decreased cell viability, upregulated NOX-4, and elevated mitochondrial ROS level in the endothelial cells induced by OGD/R were reversed by treatment with anagliptin. Second, the enlarged endothelial permeability and the decreased expression level of ZO-1 in the endothelial cells induced by OGD/R were alleviated by anagliptin. Third, the downregulation of ZO-1 and enlarged brain endothelial monolayer permeability induced by OGD/R were ameliorated by an MLCK inhibitor, ML-7. Lastly, the elevated expressions of MLCK and p-MLC-2 induced by OGD/R were suppressed by anagliptin. CONCLUSION Anagliptin protected against hypoxia/reperfusion-induced brain vascular endothelial permeability by increasing the expression ZO-1, mediated by inhibition of the MLCK/MLC-2 signaling pathway.
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Affiliation(s)
- Chuo Li
- Department
of Neurology, Guangzhou Eighth People’s
Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510440, China
- . Phone/Fax: +86-020-36473145
| | - Yusheng Zhang
- Department
of Neurology and Stroke Center, The First
Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Rongrong Liu
- Department
of Neurology and Stroke Center, The First
Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Yuzhen Mai
- Department
of Neurology, Guangzhou Eighth People’s
Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510440, China
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24
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Zhu L, Lu F, Jia X, Yan Q, Zhang X, Mu P. Amyloid-β (25-35) regulates neuronal damage and memory loss via SIRT1/Nrf2 in the cortex of mice. J Chem Neuroanat 2021; 114:101945. [PMID: 33716102 DOI: 10.1016/j.jchemneu.2021.101945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/30/2021] [Accepted: 03/09/2021] [Indexed: 02/05/2023]
Abstract
Alzheimer's disease (AD) is the most common type of dementia. AD is pathologically characterized by synaptic dysfunction and cognitive decline due to the aggregation of a large amount of amyloid-β (Aβ) protein in the brain. However, recent studies have discovered that the Aβ is produced as an antimicrobial peptide that acts against bacteria and viruses. This has renewed interest in the effect of Aβ on AD. Thus, in this study, we investigated the different concentrations of Aβ25-35 on neuroprotection and further explore the related mechanisms. Firstly, we detected the cognitive function using the Y-maze test, novel object recognition memory task and Morris water maze test. Then, we analyzed the ultrastructure of synapses and mitochondria, in addition to evaluating SOD levels. We also examined the effect of Aβ25-35 on the viability and structure of the primary neurons. The western blot analysis was used to measure the protein levels. The results showed that mice treated with high concentration of Aβ25-35 impaired the learning-memory ability and disordered the structure of neurons and mitochondria. Meanwhile, high concentration of Aβ25-35 decreased the SIRT1/Nrf2 related antioxidant capacity and induced apoptosis. In contrast, mice treated with low concentration of Aβ25-35 increased SOD levels and SIRT1/Nrf2 expressions, and induced autophagy. Our data suggest that low concentration of Aβ25-35 may increase SOD levels through SIRT1/Nrf2 and induce autophagy.
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Affiliation(s)
- Lin Zhu
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China; Center for Precision Medicine, Shenyang Medical Colleges, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China; Key Laboratory of Environment Pollution and Microecology, Shenyang Medical Colleges, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China
| | - Fangjin Lu
- Department of Pharmacology, Shenyang Medical Colleges, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China
| | - Xiaoyu Jia
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China
| | - Qiuying Yan
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China
| | - Xiaoran Zhang
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China
| | - Ping Mu
- Department of Biochemistry and Molecular Biology, Shenyang Medical College, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China; Center for Precision Medicine, Shenyang Medical Colleges, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China; Key Laboratory of Environment Pollution and Microecology, Shenyang Medical Colleges, 146 Huanghe North Street, Yuhong District, Shenyang, Liaoning, 110034, People's Republic of China.
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25
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Synthetic methods and biological applications of retrochalcones isolated from the root of Glycyrrhiza species: A review. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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26
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Xu J, Guo Q, Huo K, Song Y, Li N, Du J. JZL184 protects hippocampal neurons from oxygen-glucose deprivation-induced injury via activating Nrf2/ARE signaling pathway. Hum Exp Toxicol 2020; 40:1084-1094. [PMID: 33375871 DOI: 10.1177/0960327120984220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
JZL184 is a selective inhibitor of monoacylglycerol lipase (MAGL) that has neuroprotective effect. However, the role of JZL184 in cerebral ischemia/reperfusion (I/R) injury and the exact mechanism have not been fully understood. This study was designed to elucidate the role of JZL184 in cerebral I/R injury induced by oxygen-glucose deprivation/reoxygenation (OGD/R) in hippocampal neurons. Hippocampal neurons were pretreated with various concentrations of JZL184 for 2 h, followed by OGD for 3 h and reoxygen for 24 h. Our results showed that JZL184 improved cell viability in hippocampal neurons in response to OGD/R. JZL184 treatment significantly inhibited the production of reactive oxygen species (ROS) and malondialdehyde (MDA), as well as increased superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities in OGD/R-induced hippocampal neurons. The increased TNF-α, IL-1β, and IL-6 productions in OGD/R-induced hippocampal neurons were decreased after treatment with JZL184. Moreover, the OGD/R-caused intense TUNEL staining in hippocampal neurons was attenuated by JZL184. JZL184 treatment prevented OGD/R-caused increases in bax and cleaved caspase-3 expression and a decrease in bcl-2 expression. Furthermore, JZL184 treatment significantly promoted the activation of Nrf2/ARE signaling pathway in OGD/R-induced hippocampal neurons. Additionally, silencing of Nrf2 reversed the protective effect of JZL184 on hippocampal neurons under OGD/R condition. Taken together, these findings suggested that JZL184 exerted protective effect against OGD/R-induced injury in hippocampal neurons via activating Nrf2/ARE signaling pathway, which provided in vitro experimental support for the therapeutic benefit of JZL184 in cerebral ischemia.
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Affiliation(s)
- Jing Xu
- Department of Emergency, 12480The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, People's Republic of China.,These authors contributed equally to this work
| | - Qinyue Guo
- Department of Critical Care Medicine, 12480The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, People's Republic of China.,These authors contributed equally to this work
| | - Kang Huo
- Department of Neurology, 12480The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, People's Republic of China
| | - Yinxue Song
- Department of Emergency, 12480The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, People's Republic of China
| | - Na Li
- Department of Laboratory, 12480The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, People's Republic of China
| | - Junkai Du
- Department of Emergency, 12480The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, People's Republic of China
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27
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Yan Z, Qi W, Zhan J, Lin Z, Lin J, Xue X, Pan X, Zhou Y. Activating Nrf2 signalling alleviates osteoarthritis development by inhibiting inflammasome activation. J Cell Mol Med 2020; 24:13046-13057. [PMID: 32965793 PMCID: PMC7701566 DOI: 10.1111/jcmm.15905] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 08/20/2020] [Accepted: 08/27/2020] [Indexed: 12/13/2022] Open
Abstract
Osteoarthritis (OA), which is characterized by proliferation of subchondral bone and the degeneration of articular cartilage, is the most prevalent human arthritis. Nod-like receptor pyrin domain 3 (NLRP3) inflammasome is a hot spot in recent year and has been reported to be associated with OA synovial inflammation. However, there are few studies on NLRP3 inflammasome in chondrocyte. Licochalcone A (Lico A), a compound extracted from Glycyrrhiza species, has various biological effects such as anti-inflammation, anti-apoptotic, anti-cancer and anti-oxidation. In this study, we investigated the protective effect of Lico A on chondrocytes stimulated by lipopolysaccharide (LPS) and surgically induced OA models. In vitro, Lico A could reduce the expression of NLRP3, apoptosis-associated speck-like protein (ASC), Gasdermin D (GSDMD), caspase-1, interleukin-1beta (IL-1β) and IL-18, which indicated that Lico A attenuates LPS-induced chondrocytes pyroptosis. In addition, Lico A ameliorates the degradation of extracellular matrix (ECM) by enhancing the expression of aggrecan and collagen-II. Meanwhile, we found that Lico A inhibits NLRP3 inflammasome via nuclear factor erythroid-2-related factor 2 (Nrf2)/haeme oxygenase-1(HO-1)/nuclear factor kappa-B (NF-κB) axis. And the Nrf2 small interfering RNA (siRNA) could reverse the anti-pyroptosis effects of Lico A in mouse OA chondrocytes. In vivo, Lico A mitigates progression OA in a mouse model and reduces OA Research Society International (OARSI) scores. Thus, Lico A may have therapeutic potential in OA.
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Affiliation(s)
- Zijian Yan
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Weihui Qi
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Jingdi Zhan
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Zeng Lin
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Jian Lin
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xinghe Xue
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoyun Pan
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yulong Zhou
- Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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28
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Zhang Z, Chen X, Liu S. Role of Sirtuin-1 in Neonatal Hypoxic-Ischemic Encephalopathy and Its Underlying Mechanism. Med Sci Monit 2020; 26:e924544. [PMID: 32826847 PMCID: PMC7461657 DOI: 10.12659/msm.924544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/21/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Neonatal hypoxic-ischemic encephalopathy (HIE) is a dreaded disease and one of the leading causes of severe neurological dysfunction in neonates. The present study explored the functions of Sirtuin-1 (SIRT1) in neonatal HIE. MATERIAL AND METHODS A HIE neonatal rat model was generated to determine SIRT1 levels in brain tissues. Cell apoptosis and cell viability were analyzed by flow cytometry and MTT assay. qRT-PCR and Western blot analysis were used to assess gene mRNA and protein levels. Subsequently, the effect of SIRT1 on HIE was investigated in vitro by constructing an oxygen-glucose deprivation (OGD) cell model. RESULTS The effective construction of the HIE rat model was confirmed by the enhanced brain cell apoptosis and the increased expression of HIE-related molecular markers, including S100 calcium-binding protein B (S100B) and neuron-specific enolase (NSE). SIRT1 expression was downregulated in HIE rat brain tissues. These findings indicated that SIRT1 was downregulated in neuronal cells subjected to OGD. In addition, enhanced cell viability and reduced cell apoptosis were observed, suggesting that SIRT1 overexpression relieved OGD-induced neuronal cell injury. Transfection with SIRT1-siRNA further increased OGD-induced neuronal cell injury, evidenced by decreased cell viability and enhanced cell apoptosis. Finally, SIRT1 overexpression significantly downregulated p-p65 protein expression. CONCLUSIONS Our findings revealed that SIRT1 may be a novel and promising therapy target for HIE treatment.
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Affiliation(s)
- Zhen Zhang
- Department of Pediatrics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, P.R, China
| | - Xin Chen
- Department of Pediatrics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, P.R, China
| | - Sichen Liu
- Department of Neonatology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, P.R. China
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29
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Wang S, Wang J, Wei H, Gu T, Wang J, Wu Z, Yang Q. Genistein Attenuates Acute Cerebral Ischemic Damage by Inhibiting the NLRP3 Inflammasome in Reproductively Senescent Mice. Front Aging Neurosci 2020; 12:153. [PMID: 32625078 PMCID: PMC7311792 DOI: 10.3389/fnagi.2020.00153] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 05/06/2020] [Indexed: 12/25/2022] Open
Abstract
Postmenopausal women have a higher incidence of stroke compared to the age-matched males, and the estrogen was thought to be the main cause of such difference. However, estrogen replacement therapy for the prevention of postmenopausal stroke shows controversial results and is widely disputed because of its serious side effects after chronic administration. Genistein (Gen), a natural phytestrogen with fewer side effects, has a protective effect against cerebral ischemia damage. However, whether Gen could effectively prevent postmenopausal stroke has not been elucidated. In the current study, reproductively senescent mice were treated with Gen (10 mg/kg) for 2 weeks before having transient cerebral ischemia insults. Neurological scores, infarct volumes, and cell apoptosis were evaluated 24 h after reperfusion. The levels of inflammatory factors and nod-like receptor protein 3 (NLRP3) inflammasome-related proteins were also examined. The results showed that Gen treatment reduced infarct volumes, improved neurological scores, attenuated apoptosis, and decreased inflammatory factor release. The expression of NLRP3 inflammasome-related proteins in microglia was downregulated by Gen. However, the overexpression of NLRP3 in microglia abrogated the Gen-induced inhibition of inflammatory factor release and reversed the neuroprotective effect of Gen. Taken together, the results suggest that Gen treatment could attenuate the acute injury induced by cerebral ischemia in reproductively senescent mice via the inhibition of the NLRP3 inflammasome in microglia, indicating that Gen could be a candidate drug for the treatment of stroke in postmenopausal women.
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Affiliation(s)
- Shiquan Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jin Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Haidong Wei
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Tingting Gu
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jiajia Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhixin Wu
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Qianzi Yang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
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30
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Hu X, Li S, Doycheva DM, Huang L, Lenahan C, Liu R, Huang J, Xie S, Tang J, Zuo G, Zhang JH. Rh-CSF1 attenuates neuroinflammation via the CSF1R/PLCG2/PKCε pathway in a rat model of neonatal HIE. J Neuroinflammation 2020; 17:182. [PMID: 32522286 PMCID: PMC7285566 DOI: 10.1186/s12974-020-01862-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/29/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Hypoxic-ischemic encephalopathy (HIE) is a life-threatening cerebrovascular disease. Neuroinflammation plays an important role in the pathogenesis of HIE, in which microglia are key cellular mediators in the regulation of neuroinflammatory processes. Colony-stimulating factor 1 (CSF1), a specific endogenous ligand of CSF1 receptor (CSF1R), is crucial in microglial growth, differentiation, and proliferation. Recent studies showed that the activation of CSF1R with CSF1 exerted anti-inflammatory effects in a variety of nervous system diseases. This study aimed to investigate the anti-inflammatory effects of recombinant human CSF1 (rh-CSF1) and the underlying mechanisms in a rat model of HIE. METHODS A total of 202 10-day old Sprague Dawley rat pups were used. HI was induced by the right common carotid artery ligation with subsequent exposure of 2.5-h hypoxia. At 1 h and 24 h after HI induction, exogenous rh-CSF1 was administered intranasally. To explore the underlying mechanism, CSF1R inhibitor, BLZ945, and phospholipase C-gamma 2 (PLCG2) inhibitor, U73122, were injected intraperitoneally at 1 h before HI induction, respectively. Brain infarct area, brain water content, neurobehavioral tests, western blot, and immunofluorescence staining were performed. RESULTS The expressions of endogenous CSF1, CSF1R, PLCG2, protein kinase C epsilon type (PKCε), and cAMP response element-binding protein (CREB) were gradually increased after HIE. Rh-CSF1 significantly improved the neurological deficits at 48 h and 4 weeks after HI, which was accompanied by a reduction in the brain infarct area, brain edema, brain atrophy, and neuroinflammation. Moreover, activation of CSF1R by rh-CSF1 significantly increased the expressions of p-PLCG2, p-PKCε, and p-CREB, but inhibited the activation of neutrophil infiltration, and downregulated the expressions of IL-1β and TNF-α. Inhibition of CSF1R and PLCG2 abolished these neuroprotective effects of rh-CSF1 after HI. CONCLUSIONS Our findings demonstrated that the activation of CSF1R by rh-CSF1 attenuated neuroinflammation and improved neurological deficits after HI. The anti-inflammatory effects of rh-CSF1 partially acted through activating the CSF1R/PLCG2/PKCε/CREB signaling pathway after HI. These results suggest that rh-CSF1 may serve as a potential therapeutic approach to ameliorate injury in HIE patients.
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Affiliation(s)
- Xiao Hu
- Department of Neurology, Guizhou Provincial People's Hospital, Guiyang, 550002, China.,Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Shirong Li
- Department of Neurology, Guizhou Provincial People's Hospital, Guiyang, 550002, China.,Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Desislava Met Doycheva
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Lei Huang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Cameron Lenahan
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Bvrrell College of Osteopathic Medicine, Las Cruces, NM, 88003, USA
| | - Rui Liu
- Department of Neurology, Guizhou Provincial People's Hospital, Guiyang, 550002, China.,Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Juan Huang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Institute of Neuroscience, Chongqing Medical University, Chongqing, 400016, China
| | - Shucai Xie
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Department of Hepatobiliary Surgery, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, 570208, Hainan, China
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Gang Zuo
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA. .,Department of Neurosurgery, Taicang Hospital Affiliated to Soochow University, Taicang, Suzhou, 215400, Jiangsu, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA. .,Department of Neurosurgery, Loma Linda University, Loma Linda, CA, 92350, USA. .,Department of Anesthesiology, Loma Linda University, Loma Linda, CA, 92350, USA.
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31
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Wu CP, Lusvarghi S, Hsiao SH, Liu TC, Li YQ, Huang YH, Hung TH, Ambudkar SV. Licochalcone A Selectively Resensitizes ABCG2-Overexpressing Multidrug-Resistant Cancer Cells to Chemotherapeutic Drugs. JOURNAL OF NATURAL PRODUCTS 2020; 83:1461-1472. [PMID: 32347726 PMCID: PMC7402219 DOI: 10.1021/acs.jnatprod.9b01022] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The overexpression of the ATP-binding cassette (ABC) transporter ABCG2 has been linked to clinical multidrug resistance in solid tumors and blood cancers, which remains a significant obstacle to successful cancer chemotherapy. For years, the potential modulatory effect of bioactive compounds derived from natural sources on ABCG2-mediated multidrug resistance has been investigated, as they are inherently well tolerated and offer a broad range of chemical scaffolds. Licochalcone A (LCA), a natural chalcone isolated from the root of Glycyrrhiza inflata, is known to possess a broad spectrum of biological and pharmacological activities, including pro-apoptotic and antiproliferative effects in various cancer cell lines. In this study, the chemosensitization effect of LCA was examined in ABCG2-overexpressing multidrug-resistant cancer cells. Experimental data demonstrated that LCA inhibits the drug transport function of ABCG2 and reverses ABCG2-mediated multidrug resistance in human multidrug-resistant cancer cell lines in a concentration-dependent manner. Results of LCA-stimulated ABCG2 ATPase activity and the in silico docking analysis of LCA to the inward-open conformation of human ABCG2 suggest that LCA binds ABCG2 in the transmembrane substrate-binding pocket. This study provides evidence that LCA should be further evaluated as a modulator of ABCG2 in drug combination therapy trials against ABCG2-expressing drug-resistant tumors.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Sabrina Lusvarghi
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Te-Chun Liu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Suresh. V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-4255, United States
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32
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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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33
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Neuroinflammation in CNS diseases: Molecular mechanisms and the therapeutic potential of plant derived bioactive molecules. PHARMANUTRITION 2020. [DOI: 10.1016/j.phanu.2020.100176] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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34
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The effects of steamed ginger ethanolic extract on weight and body fat loss: a randomized, double-blind, placebo-controlled clinical trial. Food Sci Biotechnol 2019; 29:265-273. [PMID: 32064135 PMCID: PMC6992804 DOI: 10.1007/s10068-019-00649-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 05/21/2019] [Accepted: 07/18/2019] [Indexed: 01/23/2023] Open
Abstract
Steamed ginger ethanolic extract (SGE) is a product with a high 6-shogaol contents and is thought to be more potent than other ginger products. We conducted a 12-week, randomized, double-blind, placebo-controlled clinical trial to determine the effects of SGE on weight and body fat loss. Eighty healthy obese participants were recruited and randomly divided into the SGE and placebo groups. The outcome measures comprised indicators of efficacy (body weight, body mass index, body composition, and blood markers) and safety. Following the supplementation period, mean body weight, body mass index, and body fat level were significantly lower in the SGE group than in the placebo group. No clinically significant changes were observed for any safety parameter. These results suggest that SGE is a potent anti-obesity agent that does not cause significant side effects. Therefore, SGE supplementation combined with lifestyle modification could be effective in the management of body weight and fat mass.
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35
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Yao B, He J, Yin X, Shi Y, Wan J, Tian Z. The protective effect of lithocholic acid on the intestinal epithelial barrier is mediated by the vitamin D receptor via a SIRT1/Nrf2 and NF-κB dependent mechanism in Caco-2 cells. Toxicol Lett 2019; 316:109-118. [PMID: 31472180 DOI: 10.1016/j.toxlet.2019.08.024] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 12/17/2022]
Abstract
Lithocholic acid (LCA) is both a secondary bile acid and a vitamin D receptor (VDR) ligand. The VDR is activated by 1,25-dihydroxy vitamin D3 and plays an important role in maintaining integrity of the intestinal mucosal barrier. LCA can also substitute for vitamin D to carry out the in vivo functions of vitamin D. However, it is unclear whether activation of the VDR by LCA affects mucosal barrier function. In the present study, we researched the protective effect of LCA on tumor necrosis factor-alpha (TNF-α)-induced intestinal epithelial barrier dysfunction in Caco-2 cells of the human epithelial intestinal adenocarcinoma cell line. Caco-2 cell monolayers were pretreated with LCA and then exposed to 100 ng/mL TNF-α. The results showed that LCA alleviated the decrease in transepithelial electrical resistance and the increase in FITC-Dextran flux induced by TNF-α. LCA ameliorated the TNF-α-induced decrease in protein expression and distribution of ZO-1, E-cadherin, Occludin, and Claudin-1, which are tight junction markers. Additionally, the LCA treatment effectively counteracted TNF-α-mediated downregulation of silent information regulator 1 (SIRT1), nuclear factor erythroid2-related factor 2 (Nrf2), and heme oxygenase-1, which are related to oxidative stress. Increases in NF-κB p-p65 and p-IκB-α induced by TNF-α were significantly inhibited by LCA. Considering all these, the present study indicates that LCA has a significant protective effect on TNF-α-induced injury of intestinal barrier function through the VDR and suggests that suppressing NF-κB signaling and activating the SIRT1/Nrf2 pathway might be one of the mechanisms underlying the protective effect of LCA.
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Affiliation(s)
- Baiyu Yao
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang 110000, Liaoning Province, China
| | - Jingni He
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang 110000, Liaoning Province, China
| | - Xin Yin
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang 110000, Liaoning Province, China
| | - Yang Shi
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang 110000, Liaoning Province, China
| | - Jun Wan
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang 110000, Liaoning Province, China
| | - Zhong Tian
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang 110000, Liaoning Province, China.
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Protective Effects of Licochalcone A Improve Airway Hyper-Responsiveness and Oxidative Stress in a Mouse Model of Asthma. Cells 2019; 8:cells8060617. [PMID: 31226782 PMCID: PMC6628120 DOI: 10.3390/cells8060617] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 12/22/2022] Open
Abstract
Licochalcone A was isolated from Glycyrrhiza uralensis and previously reported to have antitumor and anti-inflammatory effects. Licochalcone A has also been found to inhibit the levels of Th2-associated cytokines in the bronchoalveolar lavage fluid (BALF) of asthmatic mice. However, the molecular mechanism underlying airway inflammation and how licochalcone A regulates oxidative stress in asthmatic mice are elusive. In this study, we investigated whether licochalcone A could attenuate inflammatory and oxidative responses in tracheal epithelial cells, and whether it could ameliorate oxidative stress and airway inflammation in asthmatic mice. Inflammatory human tracheal epithelial (BEAS-2B) cells were treated with licochalcone A to evaluate oxidative responses and inflammatory cytokine levels. In addition, BALB/c mice were sensitized with ovalbumin (OVA) and injected intraperitoneally with licochalcone A (5 or 10 mg/kg). Licochalcone A significantly inhibited reactive oxygen species, eotaxin, and proinflammatory cytokines in BEAS-2B cells. Licochalcone A also decreased intercellular adhesion molecule 1 levels in inflammatory BEAS-2B cells, blocking monocyte cell adherence. We also found that licochalcone A significantly decreased oxidative responses, reduced malondialdehyde levels, and increased glutathione levels in the lungs of OVA-sensitized mice. Furthermore, licochalcone A decreased airway hyper-responsiveness, eosinophil infiltration, and Th2 cytokine production in the BALF. These findings suggest that licochalcone A alleviates oxidative stress, inflammation, and pathological changes by inhibiting Th2-associated cytokines in asthmatic mice and human tracheal epithelial cells. Thus, licochalcone A demonstrated therapeutic potential for improving asthma.
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Protective Effects of Licochalcone A Ameliorates Obesity and Non-Alcoholic Fatty Liver Disease Via Promotion of the Sirt-1/AMPK Pathway in Mice Fed a High-Fat Diet. Cells 2019; 8:cells8050447. [PMID: 31083505 PMCID: PMC6562591 DOI: 10.3390/cells8050447] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 12/17/2022] Open
Abstract
Licochalcone A is a chalcone isolated from Glycyrrhiza uralensis. It showed anti-tumor and anti-inflammatory properties in mice with acute lung injuries and regulated lipid metabolism through the activation of AMP-activated protein kinase (AMPK) in hepatocytes. However, the effects of licochalcone A on reducing weight gain and improving nonalcoholic fatty liver disease (NAFLD) are unclear. Thus, the present study investigated whether licochalcone A ameliorated weight loss and lipid metabolism in the liver of high-fat diet (HFD)-induced obese mice. Male C57BL/6 mice were fed an HFD to induce obesity and NAFLD, and then were injected intraperitoneally with licochalcone A. In another experiment, a fatty liver cell model was established by incubating HepG2 hepatocytes with oleic acid and treating the cells with licochalcone A to evaluate lipid metabolism. Our results demonstrated that HFD-induced obese mice treated with licochalcone A had decreased body weight as well as inguinal and epididymal adipose tissue weights compared with HFD-treated mice. Licochalcone A also ameliorated hepatocyte steatosis and decreased liver tissue weight and lipid droplet accumulation in liver tissue. We also found that licochalcone A significantly regulated serum triglycerides, low-density lipoprotein, and free fatty acids, and decreased the fasting blood glucose value. Furthermore, in vivo and in vitro, licochalcone A significantly decreased expression of the transcription factor of lipogenesis and fatty acid synthase. Licochalcone A activated the sirt-1/AMPK pathway to reduce fatty acid chain synthesis and increased lipolysis and β-oxidation in hepatocytes. Licochalcone A can potentially ameliorate obesity and NAFLD in mice via activation of the sirt1/AMPK pathway.
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38
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Wang G, Guo H, Wang X. Platycodin D protects cortical neurons against oxygen-glucose deprivation/reperfusion in neonatal hypoxic-ischemic encephalopathy. J Cell Biochem 2019; 120:14028-14034. [PMID: 30945345 DOI: 10.1002/jcb.28677] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 02/10/2019] [Accepted: 02/14/2019] [Indexed: 12/29/2022]
Abstract
Neonatal hypoxic-ischemic encephalopathy is one of the leading causes of death in infants. Increasing evidence indicates that oxidative stress and apoptosis are major contributors to hypoxic-ischemic injury and can be used as particularly promising therapeutic targets. Platycodin D (PLD) is a triterpenoid saponin that exhibits antioxidant properties. The aim of this study was to evaluate the effects of PLD on hypoxic-ischemic injury in primary cortical neurons. We found that oxygen-glucose deprivation/reperfusion (OGD/R) induced inhibition of cell viability and cytotoxicity, which were attenuated by PLD treatment. PLD treatment inhibited oxidative stress induced by OGD/R, which was evidenced by the reduced level of reactive oxygen species and increased activities of catalase, superoxide dismutase, and glutathione peroxidase. Histone-DNA enzyme-linked immunosorbent assay revealed that apoptosis was significantly decreased after PLD treatment in OGD/R-treated cortical neurons. The increased bax expression and decreased bcl-2 expression induced by OGD/R were reversed by PLD treatment. Furthermore, PLD treatment caused the activation of the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway in OGD/R-stimulated cortical neurons. Suppression of this pathway blocked the protective effects of PLD on OGD/R-induced cell injury. These findings suggested that PLD executes its protective effects on OGD/R-induced cell injury via regulating the PI3K/Akt/mTOR pathway in cortical neurons.
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Affiliation(s)
- Guifang Wang
- Department of Pediatrics, Xinxiang Central Hospital, Xinxiang, Henan, China
| | - Hongxiang Guo
- Department of Neonatal Pediatrics, The First Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaofang Wang
- Department of Pediatrics, Xinxiang Central Hospital, Xinxiang, Henan, China
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Wang F, Shang Y, Zhang R, Gao X, Zeng Q. A SIRT1 agonist reduces cognitive decline in type 2 diabetic rats through antioxidative and anti‑inflammatory mechanisms. Mol Med Rep 2018; 19:1040-1048. [PMID: 30483738 PMCID: PMC6323206 DOI: 10.3892/mmr.2018.9699] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 03/02/2018] [Indexed: 12/21/2022] Open
Abstract
Sirtuin 1 (SIRT1) is an NAD+‑dependent protein deacetylase that is involved in cell differentiation, aging, apoptosis, physiological rhythms, metabolic regulation, oxidative stress and numerous other important biological processes. In the present study, the ability of a sirtuin‑1 (SIRT1) agonist, SRT1720, to reduce cognitive decline in type 2 diabetes mellitus (T2DM) was investigated. Streptozotocin‑induced male Sprague‑Dawley rats were used to establish a T2DM model and the protective effect of SRT1720 and its underlying mechanisms were investigated. Body weight and fasting blood glucose (FBG) were recorded and cognitive function was measured with the Morris water maze. Levels of oxidative stress, inflammation, caspase‑3 activity and nuclear factor κB (NF‑κB) mRNA expression were detected with a series of commercial assay kits and reverse transcription‑quantitative polymerase chain reaction, respectively. Western blot analysis was performed to determine the protein expression of NF‑κB, endothelial nitric oxide synthase (eNOS), peroxisome proliferator‑activated receptor γ (PPARγ), AMP‑activated protein kinase (AMPK), heat shock 70 kDa protein (HSP70), SIRT1, nuclear factor erythroid 2‑related factor 2 (Nrf2) and heme oxygenase 1 (HO‑1). The results revealed that SRT1720 significantly increased body weight, decreased FBG, improved cognitive function and reduced the levels of proteins associated with oxidative stress and inflammation damage in T2DM rats. Additionally, SRT1720 significantly decreased NF‑κB p65 mRNA expression and increased eNOS and PPARγ expression. SRT1720 significantly reduced caspase‑3 activity and HSP70 protein expression, and increased p‑AMPK, SIRT1, Nrf2 and HO‑1 protein expression. Collectively, the results indicate that SRT1720 may reduce cognitive decline in T2DM rats through antioxidative and anti‑inflammatory action via NF‑κB and AMPK‑dependent mechanisms.
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Affiliation(s)
- Fei Wang
- Health Management Institute, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Yanchang Shang
- Department of Geriatric Neurology, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Rong Zhang
- Health Management Institute, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Xiangyang Gao
- Health Management Institute, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Qiang Zeng
- Health Management Institute, Chinese PLA General Hospital, Beijing 100853, P.R. China
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Sun B, Ou H, Ren F, Huan Y, Zhong T, Gao M, Cai H. Propofol inhibited autophagy through Ca 2+/CaMKKβ/AMPK/mTOR pathway in OGD/R-induced neuron injury. Mol Med 2018; 24:58. [PMID: 30470173 PMCID: PMC6251140 DOI: 10.1186/s10020-018-0054-1] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 09/24/2018] [Indexed: 11/22/2022] Open
Abstract
Background The neuroprotective role of propofol (PPF) in cerebral ischemia-reperfusion (I/R) has recently been highlighted. This study aimed to explore whether the neuroprotective mechanisms of PPF were linked to its regulation of Ca2+/CaMKKβ (calmodulin-dependent protein kinase kinase β)/AMPK (AMP-activated protein kinase)/mTOR (mammalian target of rapamycin)/autophagy pathway. Methods Cultured primary rat cerebral cortical neurons were treated with oxygen-glucose deprivation and re-oxygenation (OGD/R) to mimic cerebral I/R injury in vitro. Results Compared with the control neurons, OGD/R exposure successfully induced neuronal I/R injury. Furthermore, OGD/R exposure notably caused autophagy induction, reflected by augmented LC3-II/LC3-I ratio and Beclin 1 expression, decreased p62 expression, and increased LC3 puncta formation. Moreover, OGD/R exposure induced elevation of intracellular Ca2+ concentration ([Ca2+]i). However, PPF treatment significantly antagonized OGD/R-triggered cell injury, autophagy induction, and [Ca2+]i elevation. Further investigation revealed that both autophagy induction by rapamycin and [Ca2+]i elevation by the Ca2+ ionophore ionomycin significantly reversed the PPF-mediated amelioration of OGD/R-triggered cell injury. Importantly, ionomycin also significantly abrogated the PPF-mediated suppression of autophagy and CaMKKβ/AMPK/mTOR signaling in OGD/R-exposed neurons. Additionally, activation of CaMKKβ/AMPK/mTOR signaling abrogated the PPF-mediated autophagy suppression. Conclusion Our findings demonstrate that PPF antagonized OGD/R-triggered neuronal injury, which might be mediated, at least in part, via inhibition of autophagy through Ca2+/CaMKKβ/AMPK/mTOR pathway. Electronic supplementary material The online version of this article (10.1186/s10020-018-0054-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bei Sun
- Department of Anesthesiology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, People's Republic of China
| | - Hao Ou
- Department of Emergency and Critical Care Medicine, The Third Xiangya Hospital, Central South University, 410013, Changsha, Hunan, People's Republic of China.,Translational Medicine Center of Sepsis, Department of Pathophysiology, The Third Xiangya Hospital, Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Fei Ren
- Department of Anesthesiology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, People's Republic of China
| | - Ye Huan
- Department of Anesthesiology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, People's Republic of China
| | - Tao Zhong
- Department of Anesthesiology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, People's Republic of China
| | - Min Gao
- Department of Emergency and Critical Care Medicine, The Third Xiangya Hospital, Central South University, 410013, Changsha, Hunan, People's Republic of China.,Translational Medicine Center of Sepsis, Department of Pathophysiology, The Third Xiangya Hospital, Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Hongwei Cai
- Department of Anesthesiology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, People's Republic of China.
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41
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Hou X, Yang S, Zheng Y. Licochalcone A attenuates abdominal aortic aneurysm induced by angiotensin II via regulating the miR-181b/SIRT1/HO-1 signaling. J Cell Physiol 2018; 234:7560-7568. [PMID: 30417353 DOI: 10.1002/jcp.27517] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/10/2018] [Indexed: 01/15/2023]
Abstract
Licochalcone A (LA), a chalcone derived from liquorice, exhibits multiple biological activities, including anti-oxidation and anti-inflammation. This study aimed to investigate the role and underlying mechanism of LA in the abdominal aortic aneurysm (AAA). AAA model was established by continuous infusion of 1000 ng/kg/min of angiotensin II (AngII) in ApoE -/- mice for 4 weeks. At 7 days before AngII administration, 5 mg/kg/day or 10 mg/kg/day of LA was intraperitoneally administered to mice and continued for 4 weeks. The characteristics and quantification of AAAs were determined in situ. Real-time PCR or western blot was used to measure mRNA or protein levels of matrix metalloproteinase 2 and matrix metalloproteinase 9; pro-inflammatory cytokines tumor necrosis factor-α, interleukin-1β, and interleukin-6; apoptosis-related proteins Bax, Bcl-2, and active caspase-3; miR-181b; Sirtuin 1 (SIRT1); and heme oxygenase-1 (HO-1). Mouse-aorta-origin vascular smooth muscle (MOVAS) cells were used to confirm the involved pathways in vitro. We found LA administration dose-dependently reduced the incidence of AngII-induced AAA, aneurysm diameter enlargement, elastin degradation, matrix metalloproteinase production, pro-inflammatory cytokines and miR-181b expression, and vascular smooth muscle cell apoptosis. It elevated SIRT1 and HO-1 expression that was suppressed by AngII. AngII enhanced miR-181b but reduced SIRT1 and HO-1 expression in MOVAS cells. In AngII-stimulated MOVAS cells, downregulation of miR-181b significantly upregulated the expression of SIRT1 and HO-1, the effect of which was abrogated by SIRT1 siRNA. Collectively, LA could attenuate AngII-induced AAA by modulating the miR-181b/SIRT1/HO-1 signaling. LA might be a potential medical therapy for small AAA.
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Affiliation(s)
- Xuhui Hou
- Department of Vascular Surgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Songbai Yang
- Department of Vascular Surgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Yan Zheng
- Department of Anesthesiology, China-Japan Union Hospital, Jilin University, Changchun, China
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SIRT1 activation by butein attenuates sepsis-induced brain injury in mice subjected to cecal ligation and puncture via alleviating inflammatory and oxidative stress. Toxicol Appl Pharmacol 2018; 363:34-46. [PMID: 30336174 DOI: 10.1016/j.taap.2018.10.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/10/2018] [Accepted: 10/12/2018] [Indexed: 12/13/2022]
Abstract
Sepsis-induced brain injury is frequently encountered in critically ill patients with severe systemic infection. Butein (3,4,2',4'-tetrahydroxychalcone) has been demonstrated as the neuro-protective agent via reducing inflammation and oxidative stress on neurons. Moreover, activation of silent information regulator 1 (SIRT1) inhibits apoptosis, oxidation and inflammation thus alleviating sepsis-induced multiorgan injuries. In present study, we show that butein administrated intraperitoneally (10 mg/kg) saved mice from sepsis-induced lethality by increasing 7-day survival rate after cecal ligation and puncture (CLP) surgery. Additionally, butein treatment enhanced SIRT1 signaling thus decreasing the Ac-NF-κB, Ac-FOXO1 and Ac-p53 levels, thus attenuating the brain injury of mice after CLP surgery by decreasing cerebral edema, maintaining the blood-brain barrier integrity, inhibiting neuronal apoptosis, and decreasing pro-inflammatory cytokines production (IL-6, TNF-α and IL-1β) and oxidative stress (downregulation of MDA, and upregulation of SOD and CAT) in both serum and cerebral cortex tissues. Moreover, butein treatment attenuated LPS induced neurological function loss. However, all above mentioned neuro-protective actions of butein were partially inhibited by EX527 co-treatment, one standard SIRT1 inhibitor. Collectively, butein attenuates sepsis-induced brain injury through alleviation of cerebral inflammation, oxidative stress and apoptosis by SIRT1 signaling activation.
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