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Effect of Sopoongsan on Skin Inflammation and Hyperlocomotion in Socially Isolated Mice with Atopic Dermatitis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:3323201. [PMID: 36159556 PMCID: PMC9507749 DOI: 10.1155/2022/3323201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 08/11/2022] [Accepted: 08/27/2022] [Indexed: 11/17/2022]
Abstract
Psychological stress is a major exacerbating factor of atopic dermatitis (AD), a chronic inflammatory skin disease. Sopoongsan (SPS), a traditional herbal formula, has been indicated for the treatment of various skin disorders, including AD. This study investigated the effects of SPS on a 2,4-dinitrochlorobenzene- (DNCB-) induced AD mice model exposed to social isolation (SI) stress. The severity of the AD symptoms and behavioral abnormalities was evaluated. SPS reduced the clinical skin score as evaluated with the SCORing Atopic Dermatitis (SCORAD) index and suppressed the cutaneous infiltration of T-lymphocyte cells, mast cells, and eosinophils in SI-AD mice. The SPS treatment decreased the total distance and mean speed and increased resting time in the open field test (OFT) for these mice. In addition, the time spent in the social zone in the social interaction test also improved when SPS treatment was given. The levels of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) in the prefrontal cortex (PFC) in the SI-AD mice were reduced by the oral administration of SPS. HaCaT and BV2 cells were used for the in vitro experiments. The pretreatment with SPS reduced the protein levels of the thymus and activation-regulated chemokine (TARC) and macrophage-derived chemokine (MDC) in the HaCaT cells stimulated with TNF-α and interferon-gamma (IFN-γ) (TI). SPS also suppressed TNF-α and IL-6 secretion in lipopolysaccharide- (LPS-) stimulated BV2 cells. These results imply that SPS could be a promising candidate for the treatment of AD in patients under stress conditions and at risk of exacerbation.
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Tanikawa T, Hayashi T, Suzuki R, Kitamura M, Inoue Y. Inhibitory effect of honokiol on furin-like activity and SARS-CoV-2 infection. J Tradit Complement Med 2021; 12:69-72. [PMID: 34545325 PMCID: PMC8444047 DOI: 10.1016/j.jtcme.2021.09.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 11/15/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has emerged as a pandemic and has caused damage to the lives of the people and economy of countries. However, the therapeutic reagents against SARS-CoV-2 remain unclear. The spike (S) protein of SARS-CoV-2 contains a cleavage motif at the S1/S2 boundary, known to be cleaved by furin. As cleavage is essential for S protein activation and viral entry, furin was selected as the target compound. In this study, we examined the inhibitory effects of two lignans (honokiol and magnolol) on furin-like enzymatic activity using a fluorogenic substrate with whole-cell lysates. Of two compounds tested, honokiol partially inhibited furin-like enzymatic activity. We further examined the anti-SARS-CoV-2 activity of honokiol using VeroE6 cell line, which is stably expressing a transmembrane protease serine 2 (TMPRSS2). It was shown that honokiol exhibited remarkable inhibition of SARS-CoV-2 infection. Therefore, honokiol and crude drugs which contain honokiol such as Magnolia species have a potential therapeutic reagents for SARS-CoV-2.
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Affiliation(s)
- Takashi Tanikawa
- Laboratory of Nutri-Pharmacotherapeutics Management, School of Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
| | - Tsuyoshi Hayashi
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ryuichiro Suzuki
- Laboratory of Natural Products & Phytochemistry, Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
| | - Masashi Kitamura
- Laboratory of Pharmacognocy, School of Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
| | - Yutaka Inoue
- Laboratory of Nutri-Pharmacotherapeutics Management, School of Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
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Borgonetti V, Governa P, Manetti F, Miraldi E, Biagi M, Galeotti N. A honokiol-enriched Magnolia officinalis Rehder & E.H. Wilson. bark extract possesses anxiolytic-like activity with neuroprotective effect through the modulation of CB1 receptor. J Pharm Pharmacol 2021; 73:1161-1168. [PMID: 33950239 DOI: 10.1093/jpp/rgab067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/12/2021] [Indexed: 12/22/2022]
Abstract
OBJECTIVES The exposure of neurons to an excessive excitatory stimulation induces the alteration of the normal neuronal function. Mood disorders are among the first signs of alterations in the central nervous system function. Magnolia officinalis bark extract has been extensively used in the traditional medicine systems of several countries, showing several pharmacological activities. Honokiol, the main constituent of M. officinalis, is a GABA modulator and a CB1 agonist, which is deeply investigated for its role in modulating mood disorders. METHODS Thus, we evaluated the possible neuroprotective effect of a standardized M. officinalis bark extract (MOE), enriched in honokiol, and its effect on animal mood behavioural tests and in an in vitro model of excitotoxicity. KEY FINDINGS MOE showed neuroprotective effect using SH-SY5Y cells, by normalizing brain-derived neurotrophic factor release. Then, we tested the effect of MOE in different behavioural tests evaluating anxiety and depression and we observed a selective anxiolytic-like effect. Finally, we confirmed the involvement of CB1 in the final effect of MOE by the co-administration of the CB1 antagonist, AM251. CONCLUSION These results suggest that MOE could be considered an effective and safe anxiolytic candidate with neuroprotective activity.
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Affiliation(s)
- Vittoria Borgonetti
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Section of Pharmacology, University of Florence, Florence, Italy
| | - Paolo Governa
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena Siena, Italy
| | - Fabrizio Manetti
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena Siena, Italy
| | - Elisabetta Miraldi
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
| | - Marco Biagi
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
| | - Nicoletta Galeotti
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Section of Pharmacology, University of Florence, Florence, Italy
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Liang Z, Currais A, Soriano-Castell D, Schubert D, Maher P. Natural products targeting mitochondria: emerging therapeutics for age-associated neurological disorders. Pharmacol Ther 2021; 221:107749. [PMID: 33227325 PMCID: PMC8084865 DOI: 10.1016/j.pharmthera.2020.107749] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022]
Abstract
Mitochondria are the primary source of energy production in the brain thereby supporting most of its activity. However, mitochondria become inefficient and dysfunctional with age and to a greater extent in neurological disorders. Thus, mitochondria represent an emerging drug target for many age-associated neurological disorders. This review summarizes recent advances (covering from 2010 to May 2020) in the use of natural products from plant, animal, and microbial sources as potential neuroprotective agents to restore mitochondrial function. Natural products from diverse classes of chemical structures are discussed and organized according to their mechanism of action on mitochondria in terms of modulation of biogenesis, dynamics, bioenergetics, calcium homeostasis, and membrane potential, as well as inhibition of the oxytosis/ferroptosis pathway. This analysis emphasizes the significant value of natural products for mitochondrial pharmacology as well as the opportunities and challenges for the discovery and development of future neurotherapeutics.
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Affiliation(s)
- Zhibin Liang
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States; The Paul F. Glenn Center for Biology of Aging Research, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States.
| | - Antonio Currais
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States
| | - David Soriano-Castell
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States
| | - David Schubert
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States; The Paul F. Glenn Center for Biology of Aging Research, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Pamela Maher
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States.
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Discovery of novel obovatol-based phenazine analogs as potential antifungal agents: synthesis and biological evaluation in vitro. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2020-0158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
To explore candidate fungicides from plant secondary metabolites, 16 novel obovatol-type phenazine derivatives were semi-synthesized from obovatol isolated from the leaves of Magnolia obovata Thunb. The antifungal activity of synthesized compounds was investigated in vitro against four phytopathogenic fungi using the spore germination method. The bioassay results showed that eight derivatives (8b, 8g, 8h–k, 8i′, and 8k′) exhibited better antifungal activity against Fusarium solani than two positive controls, especially compounds 8b (IC50 = 64.61 μg mL−1) and 8i′ (IC50 = 79.97 μg mL−1) showed pronounced inhibition of spore germination activity against F. solani. They could be used as lead compounds for further structural optimization. Additionally, the preliminary structure-activity relationships (SARs) illustrated that the introduction of a benzene ring monosubstituted with electron-withdrawing groups into the obovatol scaffold could lead to potentially antifungal compounds.
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Neuroprotective Effect of Tricyclic Pyridine Alkaloids from Fusarium lateritium SSF2, against Glutamate-Induced Oxidative Stress and Apoptosis in the HT22 Hippocampal Neuronal Cell Line. Antioxidants (Basel) 2020; 9:antiox9111115. [PMID: 33187346 PMCID: PMC7698086 DOI: 10.3390/antiox9111115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/01/2020] [Accepted: 11/06/2020] [Indexed: 12/24/2022] Open
Abstract
Excessive glutamate damages neuronal cells via the accumulation of intracellular reactive oxygen species (ROS), calcium ion (Ca2+) influx, depolarization of mitochondrial membrane potential, and apoptosis, which may result in the development of chronic neurodegenerative diseases. In this study, we evaluated the effects of 4,6′-anhydrooxysporidinone isolated from endophytic fungus Fusarium lateritium SSF2 on glutamate-induced cytotoxicity, accumulation of intracellular ROS, increases in superoxide anion production, Ca2+, depolarization of mitochondrial membrane potential, and apoptotic cell death in hippocampal HT22 cells. 2′,7′-Dichlorofluorescin diacetate (H2DCFDA) staining was used to determine the intracellular reactive oxygen species concentration and dihydroethidine (DHE) staining was used to determine the superoxide radical. Expression of the nuclear factor-erythroid-2–related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) was analyzed by Western blot. Fluo-4 staining was used to determine the intracellular Ca2+ levels. In order to explore mitochondrial membrane potential, tetramethylrhodamine methyl ester (TMRM) staining was used. Apoptotic cell death was evaluated using Annexin-V/propidium iodide (PI) staining and TUNEL staining. Expression of the cytochrome c release and cleaved caspase-9, -3 was analyzed by Western blot. Here, we were able to isolate 4,6′-anhydrooxysporidinone from endophytic fungus, Fusarium lateritium SSF2, which was shown to protect HT22 cells from glutamate-induced cytotoxicity, accumulation of intracellular ROS, increases in superoxide anion production, Ca2+, and depolarization of mitochondrial membrane potential. In addition, 4,6′-anhydrooxysporidinone enhanced the expressions of Nrf2 and HO-1. It also inhibited the apoptotic cell death through the inhibition of cytochrome c release and cleaved caspase-9, -3 in glutamate-treated HT22 cells. Therefore, our results provide ample evidence of the neuroprotective properties of 4,6′-anhydrooxysporidinone.
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Chen B, Zhao J, Zhang R, Zhang L, Zhang Q, Yang H, An J. Neuroprotective effects of natural compounds on neurotoxin-induced oxidative stress and cell apoptosis. Nutr Neurosci 2020; 25:1078-1099. [PMID: 33164705 DOI: 10.1080/1028415x.2020.1840035] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Overproduction of reactive species, notably reactive oxygen (ROS) and nitrogen (RNS) species, along with the failure of balancing effects of endogenous antioxidant defenses result in destruction of cellular structures, lipids, proteins, and genetic material, which lead to oxidative stress. Oxidative stress-induced neuronal apoptosis plays a pivotal role in pathogenesis of neurodegeneration. Antioxidants represent one of the medical choice strategies for protecting against this unbalanced oxidation-antioxidation status. Recently, natural compounds with neuroprotective potential that can scavenge free radicals and protect cells from oxidative damage have received extensive attention. METHODS In this review, we summarized the detailed research progress on the medicinal plants-derived natural compounds with potential anti-oxidation effects and their molecular mechanisms on modulating the neurotoxin (6-OHDA, H2O2, glutamate, Aβ)-induced oxidative stress and cell apoptosis. RESULTS The natural compounds that efficacious in modulating reactive species production and mitochondrial function include flavonoids, glucosides, alkaloids, polyphenols, lignans, coumarins, terpenoids, quinones and others. They decreased the neurotoxin-induced oxidative damage and apoptosis by (1) decreasing ROS/RNS generation, lipid peroxidation, caspase-3 and caspase-9 activities, LDH release, the ratio of Bax/Bcl-2, Ca2+ influx and cytochrome c release, (2) elevating MMP, and (3) restoring endogenous antioxidant enzymatic activities (CAT, GSH-Px, GSR, SOD). And they exerted neuroprotective effects against cell damages and apoptosis by modulating the oxidative cascades of different signaling pathways (Nrf2/HO-1, NF-κB, MAPKs, PI3K/Akt, GSK-3β) and preventing mitochondria-dependent apoptosis pathways. DISCUSSION The present work reviews the role of oxidative stress in neurodegeneration, highlighting the potential anti-oxidation effects of natural compounds as a promising approach to develop innovative neuroprotective strategy.
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Affiliation(s)
- Bo Chen
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
| | - Jingjing Zhao
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
| | - Rui Zhang
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
| | - Lingling Zhang
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
| | - Qian Zhang
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
| | - Hao Yang
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
| | - Jing An
- Translational Medicine Centre, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, People's Republic of China
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A Potent Lignan from Prunes Alleviates Inflammation and Oxidative Stress in Lithium/Pilocarpine-Induced Epileptic Seizures in Rats. Antioxidants (Basel) 2020; 9:antiox9070575. [PMID: 32630680 PMCID: PMC7402155 DOI: 10.3390/antiox9070575] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/21/2020] [Accepted: 06/24/2020] [Indexed: 12/15/2022] Open
Abstract
Prunus domestica L. is an edible plant that is included in the family Rosaceae and proven to possess potent anti-inflammatory and anxiolytic activity. Pinoresinol-4-O-β-d-glucopyranoside (PGu) was isolated from Prunus domestica methanol extract and its structure was determined using 1-D and 2-D NMR (one- and two-dimensional nuclear magnetic resonance). PGu was evaluated for its anticonvulsant activity using lithium/pilocarpine-induced epileptic seizures in rats. PGu displayed a notable antioxidant and anti-inflammatory activity in vitro. It ameliorates the seizures triggered by pilocarpine in a dose-dependent manner, manifested by retarding seizure onset, reducing the number of rats developing seizures, and enhancing the survival of animals after seizure exposure. PGu reduced MDA (malondialdehyde) level by 24.2% in addition to increasing catalase activity by 44.4% at 50 mg/kg b.w compared to pilocarpine-treated animals. This was confirmed by histopathological examination in which pretreatment with PGu (50 mg/kg b.w.) attenuated neurodegeneration and seizures with no histopathological alteration in neurons of the cerebral cortex. In the immunohistochemical examination, it significantly declined the elevated Cyclooxygenase-2 (COX-2) by 40% and decreased Inducible nitric oxide synthase (iNOS) expression by 18% as expressed by the optical density. PGu revealed a pronounced fitting within the active site of 5-LOX (lipoxygenase-5) with a free binding energy (∆G) equals to −65.05 kcal/mol. PGu could perfectly serve as a potent lead drug for the relief of epileptic seizures, which appeals to many patients owing to its natural origin.
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Sukprasansap M, Chanvorachote P, Tencomnao T. Cyanidin-3-glucoside activates Nrf2-antioxidant response element and protects against glutamate-induced oxidative and endoplasmic reticulum stress in HT22 hippocampal neuronal cells. BMC Complement Med Ther 2020; 20:46. [PMID: 32046712 PMCID: PMC7076852 DOI: 10.1186/s12906-020-2819-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 01/17/2020] [Indexed: 12/20/2022] Open
Abstract
Background Cyanidin-3-glucoside (C3G), a major anthocyanin present in berries, exhibits a strong antioxidant and has been shown to possess a neuroprotection. Prolonged exposure to glutamate will lead to oxidative damage and endoplasmic reticulum stress which could play a key detrimental role in the development of neurodegenerative disorders (NDs). In the present study, we investigated the neuroprotective effect and underlying mechanisms of C3G on the reduction of oxidative/ER stress-induced apoptosis by glutamate in HT22 mouse hippocampal neuronal cells. Method Cells were pre-treated with C3G in various concentrations, followed by glutamate. Cell viability and toxicity were examined using MTT and LDH assays. The apoptotic and necrotic cell death were carried out by Annexin V-FITC/propidium iodide co-staining assays. Generation of intracellular reactive oxygen species (ROS) in cells was measured by flow cytometry using DCFH-DA probe. Expression of antioxidant genes was evaluated by Real-time polymerase chain reaction analysis. The possible signaling pathways and proteins involved were subsequently demonstrated by Western blot analysis. Result The pretreatment of the HT22 cells with C3G protected cell death from oxidative toxicity induced by glutamate. We demonstrated that treatment cells with glutamate caused several radical forms of ROS formation, and they were abolished by specific ROS inhibitors. Interestingly, C3G directly scavenged radical activity and inhibited intracellular ROS generation in our cell-based system. In addition, C3G pretreatment suppressed the up-regulation of specific ER proteins namely calpain, caspase-12 and C/EBP homologous proteins (CHOP) induced by glutamate-mediated oxidative and ER stress signal by up-regulating the expressions of survival proteins, including extracellular regulated protein kinase (ERK) and nuclear factor E2-related factor 2 (Nrf2). Furthermore, dramatically activated gene expression of endogenous antioxidant enzymes (i.e. superoxide dismutases (SODs), catalase (CAT) and glutathione peroxidase (GPx)), and phase II enzymes (glutathione-S-transferases (GSTs)) was found in C3G-treated with cells. Conclusions Our finding suggest that C3G could be a promising neuroprotectant via inhibition of glutamate-induced oxidative and ER stress signal and activation of ERK/Nrf2 antioxidant mechanism pathways.
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Affiliation(s)
- Monruedee Sukprasansap
- Food Toxicology Unit, Institute of Nutrition, Mahidol University, Salaya campus, 25/25 Phuttamonthon 4 Road, Salaya, Nakhon Pathom, 73170, Thailand
| | - Pithi Chanvorachote
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand.,Cell-based Drug and Health Products Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Tewin Tencomnao
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand.
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Kamal M, Naz M, Jawaid T, Arif M. Natural products and their active principles used in the treatment of neurodegenerative diseases: a review. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s13596-019-00396-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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11
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Kang KB, Park EJ, da Silva RR, Kim HW, Dorrestein PC, Sung SH. Targeted Isolation of Neuroprotective Dicoumaroyl Neolignans and Lignans from Sageretia theezans Using in Silico Molecular Network Annotation Propagation-Based Dereplication. JOURNAL OF NATURAL PRODUCTS 2018; 81:1819-1828. [PMID: 30106290 DOI: 10.1021/acs.jnatprod.8b00292] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The integration of LC-MS/MS molecular networking and in silico MS/MS fragmentation is an emerging method for dereplication of natural products. In the present study, a targeted isolation of natural products using a new in silico-based annotation tool named Network Annotation Propagation (NAP) is described. NAP improves accuracy of in silico fragmentation analyses by reranking candidate structures based on the network topology from MS/MS-based molecular networking. Annotation for the MS/MS spectral network of the Sageratia theezans twig extract was performed using NAP, and most molecular families within the network, including the known triterpenoids 1-7, could be putatively annotated, without relying on any previous reports of molecules from this species. Based on the in silico dereplication results, molecules were prioritized for isolation. In total, six dicoumaroyl 8- O-4' neolignans (8-13) and three dicoumaroyl lignans (14-16) were isolated from the twigs of S. theezans and structurally characterized by spectroscopic analyses. Isolates were evaluated for their neuroprotective activity, and compounds 14-16 showed potent protective effects against glutamate-induced oxidative stress in mouse HT22 cells at a concentration of 12.5 μM.
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Affiliation(s)
- Kyo Bin Kang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences , Seoul National University , Seoul 08826 , Republic of Korea
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences , University of California, San Diego , La Jolla , California 92093 , United States
| | - Eun Jin Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences , Seoul National University , Seoul 08826 , Republic of Korea
| | - Ricardo R da Silva
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences , University of California, San Diego , La Jolla , California 92093 , United States
| | - Hyun Woo Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences , Seoul National University , Seoul 08826 , Republic of Korea
| | - Pieter C Dorrestein
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences , University of California, San Diego , La Jolla , California 92093 , United States
| | - Sang Hyun Sung
- College of Pharmacy and Research Institute of Pharmaceutical Sciences , Seoul National University , Seoul 08826 , Republic of Korea
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Seo KH, Lee DY, Lee YG, Baek NI. Dineolignans of 3-O-4' diphenyl ether-type from fruits of Magnolia obovata. PHYTOCHEMISTRY 2017; 136:133-140. [PMID: 28139299 DOI: 10.1016/j.phytochem.2017.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 12/16/2016] [Accepted: 01/07/2017] [Indexed: 06/06/2023]
Abstract
Seven dineolignans of the 3-O-4' diphenyl ether-type (obovatalignans C-I, respectively), were isolated from fruits of Magnolia obovata through repeated silica gel (SiO2), octadecyl SiO2, and Sep-Pak chromatographies. Their chemical structures were determined based on various spectroscopic methods including NMR, HR-MS, IR, specific rotation, and CD spectrometry. Especially, compounds 1-5 include the relatively rare 1,4-benzodioxane ring moiety in the molecular structure.
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Affiliation(s)
- Kyeong-Hwa Seo
- Department of Oriental Medicine Biotechnology, Kyung Hee University, Yongin, 446-701, Republic of Korea
| | - Dae-Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong, 369-873, Republic of Korea
| | - Yeong-Geun Lee
- Department of Oriental Medicine Biotechnology, Kyung Hee University, Yongin, 446-701, Republic of Korea
| | - Nam-In Baek
- Department of Oriental Medicine Biotechnology, Kyung Hee University, Yongin, 446-701, Republic of Korea.
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Sukprasansap M, Chanvorachote P, Tencomnao T. Cleistocalyx nervosum var. paniala berry fruit protects neurotoxicity against endoplasmic reticulum stress-induced apoptosis. Food Chem Toxicol 2017; 103:279-288. [PMID: 28315776 DOI: 10.1016/j.fct.2017.03.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/05/2017] [Accepted: 03/13/2017] [Indexed: 12/29/2022]
Abstract
Oxidative and endoplasmic reticulum (ER) stresses cause neuronal damage leading to neurodegenerative disorders. Cleistocalyx nervosum var. paniala (CNP) berry fruit has been shown to possess powerful antioxidant properties. Here, we investigated the neuroprotective effect of CNP extract against glutamate-mediated oxidative/ER stress-induced cell death in mouse hippocampal neuronal HT22 cells. CNP extract was clarified for its radical scavenging activities, total phenolic and anthocyanin contents. The key anthocyanin cyanidin-3-glucoside was used as a marker to standardize the extract used in the study. We found that pretreated cells with CNP extract (0.05-1 μg/ml) prevented neuronal cell death in response to 5 mM glutamate evaluated by cell viability MTT, LDH and apoptosis/necrosis Annexin V/propidium iodide co-staining assays. For mechanistic approach, glutamate-induced cell death through reactive oxygen species (ROS)-mediated ER stress pathways, indicating the increase of ROS and ER stress signature molecules including calpain, caspases-12 and C/EBP homologous proteins (CHOP). CNP extract inhibited ROS production. Moreover, the extract also suppressed the specific-ER stress apoptotic proteins level in glutamate-induced cells by upregulating the gene expression of cellular antioxidant enzymes (SODs, CAT, GPx and GSTs). Taken together, our results provide information about and the molecular mechanism of CNP extract as a promising neuroprotectant and antioxidant.
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Affiliation(s)
- Monruedee Sukprasansap
- Ph.D. program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.
| | - Pithi Chanvorachote
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand; Cell-based Drug and Health Products Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Pathumwan, 10330 Bangkok, Thailand.
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Sun Y, Zhang Y, Li Y, Cheng J, Chen S, Xiao Y, Ao G. Synthesis and biological evaluation of novel hydrogen sulfide releasing nicotinic acid derivatives. Bioorg Med Chem 2016; 24:5368-5373. [PMID: 27618541 DOI: 10.1016/j.bmc.2016.08.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 08/15/2016] [Accepted: 08/29/2016] [Indexed: 02/07/2023]
Abstract
Twelve novel hybrids of slowly releasing hydrogen sulfide donor ADT-OH combined with nicotinic acid were synthesized. All of their structures had been confirmed by 1H NMR, 13C NMR and MS spectra. The target compounds were evaluated for their neuroprotective effects on hippocampal neuron HT22 cells against glutamate-induced injury at the concentrations of 1-100μM with MTT assay, and their toxicity on HT22 cells untreated by glutamine at the concentration of 100μM. The active compound was further investigated for its effect on ischemic infarct volume by intraperitoneal injection at 3h after ischemia in mice models of permanent middle cerebral artery occlusion (pMCAO). The results showed that all the compounds significantly protected HT22 cells from glutamate-induced damage at most of the experimental concentrations, and had no or little neurotoxicity on normal HT22 cells at the high concentration. More importantly, compound A6 significantly reduced infarct volume in the pMCAO model. These results suggested that compound A6 may be promising for further evaluation for the intervention of cerebral ischemic injury.
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Affiliation(s)
- Yinxing Sun
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, Jiangsu Province 215123, China
| | - Yusuo Zhang
- Institute of Neuroscience, Soochow University, Suzhou, China
| | - Yuyao Li
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, Jiangsu Province 215123, China
| | - Jian Cheng
- Institute of Neuroscience, Soochow University, Suzhou, China
| | - Shiyu Chen
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, Jiangsu Province 215123, China
| | - Yunqi Xiao
- Institute of Neuroscience, Soochow University, Suzhou, China
| | - Guizhen Ao
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, Jiangsu Province 215123, China.
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Yang EJ, Song KS. Polyozellin, a key constituent of the edible mushroom Polyozellus multiplex, attenuates glutamate-induced mouse hippocampal neuronal HT22 cell death. Food Funct 2015; 6:3678-86. [PMID: 26399743 DOI: 10.1039/c5fo00636h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Polyozellus multiplex (PM), a Korean edible mushroom, has biological activities such as chemoprevention of stomach cancer, inhibition of lipid peroxidation, and reduction of prolyl endopeptidase activity. However, there are little reports on the protective effects of PM or its constituents against glutamate-induced mouse hippocampal neuronal cell (HT22) death. In this study, polyozellin (PZ), a key constituent of PM, was applied to glutamate-treated HT22 cells to evaluate its neuroprotective mechanisms. PZ (25 μM) dramatically increased the HT22 cell viability when the cell death was induced by 5 mM glutamate for 12 h, which was mediated by inhibition of Ca(2+) influx, intracellular reactive oxygen species (ROS) production, and lipid peroxidation. PZ also regulated expression of Bid, Bcl-2, and apoptosis-inducing factor (AIF), as well as phosphorylation of mitogen-activated protein kinases (MAPKs). These data suggest that PM and its constituent PZ might be useful for prevention and treatment of neurodegenerative disorders.
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Affiliation(s)
- Eun-Ju Yang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Sankyuk-dong, Daegu 702-701, Republic of Korea.
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16
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Li H, Liu X, Zhu Y, Liu Y, Wang Y. Magnolol derivative 002C-3 protects brain against ischemia-reperfusion injury via inhibiting apoptosis and autophagy. Neurosci Lett 2015; 588:178-83. [PMID: 25575794 DOI: 10.1016/j.neulet.2015.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 01/02/2015] [Accepted: 01/05/2015] [Indexed: 12/28/2022]
Abstract
Neuroprotective agents can rescue ischemic penumbra in cerebral ischemia. However, the clinically effective neuroprotective agents for cerebral ischemic injury remain deficient in clinic so far. This study was undertaken to investigate the brain protective effect of 002C-3 and its potential mechanisms in rats, and its preliminary toxicity in mice. A transient middle cerebral artery occlusion (tMCAO) model in rats was used to evaluate its effect and mechanism, a dose limited experiment was used to evaluate its preliminary toxicity. 10-50μg/kg of 002C-3 (single iv bolus after reperfusion) significantly reduced neurological scores, infarct volumes and brain water contents, and the effect was more potent than that of magnolol under the same mole dose; 50μg/kg of 002C-3 significantly decreased the number of TUNEL-positive cells, reduced the activity of caspase-3, and lowered the autophagy-related proteins LC3-II and Beclin-1 level in I-R cerebral tissue. At 1000 times' dose of high effective dose (ip) 002C-3 failed to show evident toxicity in mice, and the mean body weight of mice treated with 002C-3 was almost the same as that of the vehicle control, but magnolol caused evident toxicity and death. In conclusion, 002C-3 has significant protective effect against cerebral ischemia-reperfusion injury; the effect is more potent than magnolol; this effect is maybe associated with its inhibition of both apoptosis and autophagy; its toxicity is greatly reduced compared to magnolol. These results provided data for its further research and development.
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Affiliation(s)
- Hongfei Li
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xiaoyan Liu
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yuanjun Zhu
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Ye Liu
- Beijing Honghui New Medical Technology Co., Ltd. Beijing Daxing Biological Medicine Industry Base, Beijing 102600, China
| | - Yinye Wang
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China.
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17
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He M, Liu J, Cheng S, Xing Y, Suo WZ. Differentiation renders susceptibility to excitotoxicity in HT22 neurons. Neural Regen Res 2014; 8:1297-306. [PMID: 25206424 PMCID: PMC4107644 DOI: 10.3969/j.issn.1673-5374.2013.14.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 02/23/2013] [Indexed: 12/31/2022] Open
Abstract
HT22 is an immortalized mouse hippocampal neuronal cell line that does not express cholinergic and glutamate receptors like mature hippocampal neurons in vivo. This in part prevents its use as a model for mature hippocampal neurons in memory-related studies. We now report that HT22 cells were appropriately induced to differentiate and possess properties similar to those of mature hippocampal neurons in vivo, such as becoming more glutamate-receptive and excitatory. Results showed that sensitivity of HT22 cells to glutamate-induced toxicity changed dramatically when comparing undifferentiated with differentiated cells, with the half-effective concentration for differentiated cells reducing approximately two orders of magnitude. Moreover, glutamate-induced toxicity in differentiated cells, but not undifferentiated cells, was inhibited by the N-methyl-D- aspartate receptor antagonists MK-801 and memantine. Evidently, differentiated HT22 cells expressed N-methyl-D-aspartate receptors, while undifferentiated cells did not. Our experimental findings indicated that differentiation is important for immortalized cell lines to render post-mitotic neuronal properties, and that differentiated HT22 neurons represent a better model of hippocampal neurons than undifferentiated cells.
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Affiliation(s)
- Minchao He
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China ; Laboratory for Alzheimer's Disease & Aging Research, Veterans Affairs Medical Center, Kansas, MO 64128, USA
| | - Jun Liu
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China ; Laboratory for Alzheimer's Disease & Aging Research, Veterans Affairs Medical Center, Kansas, MO 64128, USA
| | - Shaowu Cheng
- Laboratory for Alzheimer's Disease & Aging Research, Veterans Affairs Medical Center, Kansas, MO 64128, USA
| | - Yigang Xing
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
| | - William Z Suo
- Laboratory for Alzheimer's Disease & Aging Research, Veterans Affairs Medical Center, Kansas, MO 64128, USA ; Department of Neurology, University of Kansas Medical Center, Kansas, KS 66170, USA ; Molecular & Integrative Physiology, University of Kansas Medical Center, Kansas, KS 66170, USA
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18
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Yang EJ, Song KS. Andrographolide, a major component of Andrographis paniculata leaves, has the neuroprotective effects on glutamate-induced HT22 cell death. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.04.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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19
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Lignans and neolignans from the stems of Vibrunum erosum and their neuroprotective and anti-inflammatory activity. Arch Pharm Res 2014; 38:26-34. [DOI: 10.1007/s12272-014-0358-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
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w007B protects brain against ischemia-reperfusion injury in rats through inhibiting inflammation, apoptosis and autophagy. Brain Res 2014; 1558:100-8. [PMID: 24613402 DOI: 10.1016/j.brainres.2014.02.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 01/19/2014] [Accepted: 02/18/2014] [Indexed: 01/21/2023]
Abstract
This study was designed to investigate the effect of w007B, a newly synthesized derivative of honokiol, on MCAO reperfusion, and its therapeutic time window and related mechanisms in rats. Neurological deficit scores, infarct size and brain water content were measured after 24 h reperfusion following 2 h ischemia. The results showed that w007B (10 and 50 μg/kg, IV immediately after reperfusion) markedly decreased neurological deficit scores, reduced infarct size and alleviated brain water content, and then 50 μg/kg w007B given within 3 h after reperfusion (5 h after ischemia) significantly attenuated ischemia-induced brain injury. Additionally, no sign of toxicity was observed when a single dose of 50mg/kg w007B (1000 times of the highest effective dose, IP) was administered. To explore the underlying mechanisms, the expression level of apoptosis, inflammation and autophagy-related markers in brain tissue were detected with kits or by western blot. It was observed that w007B rapidly and significantly reduced caspase-3 activity and NO production in the injured semi-brain, and also lowered the level of the p65 subunit of NF-κB in the nucleus. Besides, it also reduced the expression of Beclin-1 and LC3B-II, and increased the level of p62, the autophagy-related proteins in I/R-injured hemisphere. In conclusion, w007B exerts neuroprotective effect on cerebral ischemia-reperfusion injury with wider therapeutic time window and better safety; its mechanisms may be associated with its anti-inflammation, anti-apoptosis and anti-autophagy action. These results suggest that w007B shows strong potential as a clinical neuroprotective candidate for the treatment of ischemic stroke.
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Luna-López A, González-Puertos VY, Romero-Ontiveros J, Ventura-Gallegos JL, Zentella A, Gomez-Quiroz LE, Königsberg M. A noncanonical NF-κB pathway through the p50 subunit regulates Bcl-2 overexpression during an oxidative-conditioning hormesis response. Free Radic Biol Med 2013; 63:41-50. [PMID: 23648765 DOI: 10.1016/j.freeradbiomed.2013.04.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 03/27/2013] [Accepted: 04/25/2013] [Indexed: 11/30/2022]
Abstract
Cells can respond to damage and stress by activating various repair and survival pathways. One of these responses can be induced by preconditioning the cells with sublethal stress to provoke a prosurvival response that will prevent damage and death, and which is known as hormesis. Bcl-2, an antiapoptotic protein recognized by its antioxidant and prosurvival functions, has been documented to play an important role during oxidative-conditioning hormesis. Using an oxidative-hormetic model, which was previously established in the L929 cell line by subjecting the cells to a mild oxidative stress of 50 μM H₂O₂ for 9 h, we identified two different transductional mechanisms that participate in the regulation of Bcl-2 expression during the hormetic response. These mechanisms converge in activating the nuclear transcription factor NF-κB. Interestingly, the noncanonical p50 subunit of the NF-κB family is apparently the subunit that participates during the oxidative-hormetic response.
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