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Chen L, Zhuang Z, Duan H, Lv D, Hong S, Chen P, He B, Shen Z. Corilagin improves cognitive impairment in APP/PS1 mice by reducing Aβ generation and enhancing synaptic plasticity. Eur J Pharmacol 2024; 981:176893. [PMID: 39134295 DOI: 10.1016/j.ejphar.2024.176893] [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: 11/09/2023] [Revised: 02/24/2024] [Accepted: 08/09/2024] [Indexed: 08/20/2024]
Abstract
Alzheimer's disease (AD) is closely associated with the neurotoxic effects of amyloid-β (Aβ), leading to synaptic damage, neuronal loss and cognitive dysfunction. Previous in vitro studies have demonstrated the potential of corilagin to counteract Aβ-induced oxidative stress, inflammatory injury, and β-site amyloid precursor protein cleaving enzyme-1 (BACE1) activity in Aβ production. However, the in vivo protective effects of corilagin on Alzheimer's disease remain unexplored. The purpose of this study was to investigate the protective effects of corilagin on APP/PS1 mice and the underlying mechanisms. The cognitive function of the mice was assessed by step-through passive avoidance and Morris water maze tests. Nissl staining was used to evaluate neuronal damage in the hippocampus. ELISA and Western blotting analyses were used to determine the associated protein expression. Transmission electron microscopy was utilized to observe the synaptic ultrastructure of hippocampal neurons. Golgi staining was applied to assess dendritic morphology and dendritic spine density in hippocampal pyramidal neurons. Immunohistochemistry and Western blotting were performed to examine the expression of synaptic-associated proteins. The results showed that corilagin improves learning and memory in APP/PS1 mice, reduces hippocampal neuron damage, inhibits BACE1 and reduces Aβ generation. It also improves synaptic plasticity and the expression of synaptic-associated proteins. Corilagin effectively reduces Aβ generation by inhibiting BACE1, ultimately reducing neuronal loss and enhancing synaptic plasticity to improve synaptic transmission. This study sheds light on the potential therapeutic role of corilagin in Alzheimer's disease.
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Affiliation(s)
- Linyi Chen
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China
| | - Zhujun Zhuang
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China
| | - Hengqian Duan
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China
| | - Di Lv
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China
| | - Shengxiong Hong
- Laboratory Animal Department, Kunming Medical University, Kunming, 650031, Yunnan, China
| | - Peng Chen
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China.
| | - Bo He
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China.
| | - Zhiqiang Shen
- School of Pharmaceutical Sciences, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, 650500, China; Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China.
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Tao D, Xia X, Zhang X, Yang R, Yang Y, Zhang L, Shi Y, Lv D, Chen P, He B, Shen Z. Integrated network pharmacology, molecular docking and pharmacodynamic study reveals protective effects and mechanisms of corilagin against cerebral ischemia-induced injury. Exp Neurol 2024; 374:114697. [PMID: 38266765 DOI: 10.1016/j.expneurol.2024.114697] [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: 11/13/2023] [Revised: 01/11/2024] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Stroke is one of the leading causes of death and long-term disability worldwide. Previous studies have found that corilagin has antioxidant, anti-inflammatory, anti-atherosclerotic and other pharmacological activities and has a protective effect against cardiac and cerebrovascular injury. OBJECTIVES The aim of this study was to investigate the protective effects of corilagin against ischemic stroke and to elucidate the underlying molecular mechanisms using network pharmacology, molecular docking, and animal and cell experiments. METHODS We investigated the potential of corilagin to ameliorate cerebral ischemia-reperfusion injury using in vivo rat middle cerebral artery occlusion/reperfusion (MCAO/R) and in vitro oxygen-glucose deprivation/reoxygenation (OGD/R) models. RESULTS Our results suggest that corilagin may exert its anti-ischemic stroke effect by interacting with 92 key targets, including apoptosis-associated proteins (Bcl-2, Bax, caspase-3) and PI3K/Akt signaling pathway-related proteins. In vivo and in vitro experiments showed that corilagin treatment improved neurological deficits, attenuated cerebral infarct volume, and mitigated neuronal damage in MCAO/R rats. Corilagin treatment also enhanced the survival of PC12 cells exposed to OGD/R, reduced the rate of LDH leakage, inhibited cell apoptosis, and activated the PI3K/Akt signaling pathway. Importantly, the effects of corilagin on the PI3K/Akt signaling pathway and apoptosis-associated proteins were reversed by the PI3K-specific inhibitor LY294002. CONCLUSIONS These results indicate that the molecular mechanism of the anti-ischemic effect of corilagin involves inhibiting neuronal apoptosis and activating the PI3K/Akt signaling pathway. These findings provide a theoretical and experimental basis for the further development and application of corilagin as a potential anti-ischemic stroke agent.
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Affiliation(s)
- Daiju Tao
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Xin Xia
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; People's Hospital of Yilong County, Sichuan Province 637600, PR China
| | - Xiaochao Zhang
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Renhua Yang
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Yuan Yang
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Li Zhang
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Yunke Shi
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Di Lv
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China
| | - Peng Chen
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China.
| | - Bo He
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China.
| | - Zhiqiang Shen
- School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology for Natural Products, NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming 650500, PR China; College of Modern biomedical industry, Kunming Medical University, Kunming 650500, PR China.
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Khalifa J, Bourgault S, Gaudreault R. Interactions of Polyphenolic Gallotannins with Amyloidogenic Polypeptides Associated with Alzheimer's Disease: From Molecular Insights to Physiological Significance. Curr Alzheimer Res 2023; 20:603-617. [PMID: 38270140 DOI: 10.2174/0115672050277001231213073043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/30/2023] [Accepted: 11/10/2023] [Indexed: 01/26/2024]
Abstract
Polyphenols are natural compounds abundantly found in plants. They are known for their numerous benefits to human health, including antioxidant properties and anti-inflammatory activities. Interestingly, many studies have revealed that polyphenols can also modulate the formation of amyloid fibrils associated with disease states and can prevent the formation of cytotoxic oligomer species. In this review, we underline the numerous effects of four hydrolysable gallotannins (HGTs) with high conformational flexibility, low toxicity, and multi-targeticity, e.g., tannic acid, pentagalloyl glucose, corilagin, and 1,3,6-tri-O-galloyl-β-D-glucose, on the aggregation of amyloidogenic proteins associated with the Alzheimer's Disease (AD). These HGTs have demonstrated interesting abilities to reduce, at different levels, the formation of amyloid fibrils involved in AD, including those assembled from the amyloid β-peptide, the tubulin-associated unit, and the islet amyloid polypeptide. HGTs were also shown to disassemble pre-formed fibrils and to diminish cognitive decline in mice. Finally, this manuscript highlights the importance of further investigating these naturally occurring HGTs as promising scaffolds to design molecules that can interfere with the formation of proteotoxic oligomers and aggregates associated with AD pathogenesis.
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Affiliation(s)
- Jihane Khalifa
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montréal, QC, H2X 2J6, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montréal, QC, H2X 3Y7, Canada
| | - Steve Bourgault
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montréal, QC, H2X 2J6, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Canada
| | - Roger Gaudreault
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montréal, QC, H2X 2J6, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montréal, QC, H2X 3Y7, Canada
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Neuroprotective Effect of Polyphenol Extracts from Terminalia chebula Retz. against Cerebral Ischemia-Reperfusion Injury. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196449. [PMID: 36234986 PMCID: PMC9571999 DOI: 10.3390/molecules27196449] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/17/2022]
Abstract
Current therapies for ischemic stroke are insufficient due to the lack of specific drugs. This study aimed to investigate the protective activity of polyphenol extracts from Terminalia chebula against cerebral ischemia-reperfusion induced damage. Polyphenols of ethyl acetate and n-butanol fractions were extracted from T. chebula. BV2 microglial cells exposed to oxygen-glucose deprivation/reoxygenation and mice subjected to middle cerebral artery occlusion/reperfusion were treated by TPE and TPB. Cell viability, cell morphology, apoptosis, mitochondrial membrane potential, enzyme activity and signaling pathway related to oxidative stress were observed. We found that TPE and TPB showed strong antioxidant activity in vitro. The protective effects of TPE and TPB on cerebral ischemia-reperfusion injury were demonstrated by enhanced antioxidant enzyme activities, elevated level of the nucleus transportation of nuclear factor erythroid 2-related factor 2 and expressions of antioxidant proteins, with a simultaneous reduction in cell apoptosis and reactive oxygen species level. In conclusion, TPE and TPB exert neuroprotective effects by stimulating the Nrf2 signaling pathway, thereby inhibiting apoptosis.
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Kubo K, Watanabe H, Kumeta H, Aizawa T, Seki C, Nakano H, Tokuraku K, Uwai K. Chemical analysis of amyloid β aggregation inhibitors derived from Geranium thunbergii. Bioorg Med Chem 2022; 68:116840. [PMID: 35661848 DOI: 10.1016/j.bmc.2022.116840] [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: 03/31/2022] [Revised: 05/18/2022] [Accepted: 05/18/2022] [Indexed: 11/17/2022]
Abstract
Amyloid β (Aβ) aggregates in the brains of patients with Alzheimer's disease (AD) and accumulates via oligomerization and subsequent fiber elongation processes. These toxicity-induced neuronal damage and shedding processes advance AD progression. Therefore, Aβ aggregation-inhibiting substances may contribute to the prevention and treatment of AD. We screened for Aβ42 aggregation inhibitory activity using various plant extracts and compounds, and found high activity for a Geranium thunbergii extract (EC50 = 18 μg/mL). Therefore, we screened for Aβ42 aggregation inhibitors among components of a G. thunbergii extract and investigated their chemical properties in this study. An active substance was isolated from the ethanol extract of G. thunbergii based on the Aβ42 aggregation inhibitory activity as an index, and the compound was identified as geraniin (1) based on spectral data. However, although geraniin showed in vitro aggregation-inhibition activity, no binding to Aβ42 was observed via saturation transfer difference-nuclear magnetic resonance (STD-NMR). In contrast, the hydrolysates gallic acid (2) and corilagin (5) showed aggregation-inhibiting activity and binding was observed via STD-NMR. Therefore, the hydrolysates produced under the conditions of the activity test may contribute to the Aβ42 aggregation-inhibition activity of G. thunbergii extracts. Geraniin derivatives may help prevent and treat AD.
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Affiliation(s)
- Kenji Kubo
- Graduate School of Engineering, Muroran Institute of Technology, 27-1Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Hikaru Watanabe
- Graduate School of Engineering, Muroran Institute of Technology, 27-1Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Hiroyuki Kumeta
- Graduate Schol of Life Science, Hokaido University, Kita 10, Nishi 8, Kita-ku, Saporo, Hokkaido 060-0808, Japan
| | - Tomoyasu Aizawa
- Graduate Schol of Life Science, Hokaido University, Kita 10, Nishi 8, Kita-ku, Saporo, Hokkaido 060-0808, Japan
| | - Chigusa Seki
- Graduate School of Engineering, Muroran Institute of Technology, 27-1Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Hiroto Nakano
- Graduate School of Engineering, Muroran Institute of Technology, 27-1Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Kiyotaka Tokuraku
- Graduate School of Engineering, Muroran Institute of Technology, 27-1Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Koji Uwai
- Graduate School of Engineering, Muroran Institute of Technology, 27-1Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan.
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Shen Y, Teng L, Qu Y, Liu J, Zhu X, Chen S, Yang L, Huang Y, Song Q, Fu Q. Anti-proliferation and anti-inflammation effects of corilagin in rheumatoid arthritis by downregulating NF-κB and MAPK signaling pathways. JOURNAL OF ETHNOPHARMACOLOGY 2022; 284:114791. [PMID: 34737112 DOI: 10.1016/j.jep.2021.114791] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/19/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The dried aboveground part of Geranium Wilfordii Maxim. (G. Wilfordii) is a traditional Chinese herbal medicine named lao-guan-cao. It has long been used for dispelling wind-dampness, unblocking meridians, and stopping diarrhea and dysentery. Previous investigations have revealed that 50% ethanolic extract of G. Wilfordii has anti-inflammatory and anti-proliferation activities on TNF-α induced murine fibrosarcoma L929 cells. Corilagin (COR) is a main compound in G. Wilfordii with the content up to 1.69 mg/g. Pharmacology study showed that COR has anti-inflammatory, anti-tumor, anti-microorganism, anti-oxidant, and hepatoprotective effects. However, there is no any investigation on its anti-proliferation and anti-inflammation effects in rheumatoid arthritis (RA). AIM OF THE STUDY The present study aimed to evaluate the potential pharmacological mechanisms of anti-proliferation and anti-inflammation effects of COR in RA. MATERIALS AND METHODS In vitro, MH7A cells model induced by IL-1β was used. The anti-proliferation activity of COR was assessed by Cell Counting Kit-8 (CCK-8) assay, and the anti-migration and anti-invasion activity of COR was determined by wound healing assay and transwell assay, respectively. Furthermore, apoptosis assay by flow cytometer was used to measure the pro-apoptotic effect of COR. The mRNA expressions of Bax, Bcl-2, IL-6, IL-8, MMP-1, MMP-2, MMP-3, MMP-9, COX-2, and iNOS were measured by qRT-PCR, and related protein were further verified by ELISA kits or Western blot. Moreover, protein levels associated with NF-κB and MAPK signaling pathways of p65, P-p65, IκBα, P-IκBα, ERK1/2, P-ERK1/2, JNK, P-JNK1/2/3, p38, and P-p38 were determined by Western blot. The nuclear translocation of NF-κB-p65 was detected by immunofluorescent staining. In vivo, adjuvant-induced arthritis (AIA) rat model was used, and the body weight, paw swelling, and arthritis score during the entire period were measured. Histopathological analysis of joints of synovial tissues was also determined. The expression of pro-inflammatory cytokines in serum including IL-6, TNF-α, IL-1β, and IL-17 were measured. RESULTS The in vitro results showed that COR could dose-dependently inhibit the proliferation, migration, and invasion of IL-1β-induced MH7A cells, as well as promote its apoptosis. Moreover, it also suppressed the over-expression of Bcl-2, IL-6, IL-8, MMP-1, MMP-2, MMP-3, MMP-9, COX-2, and iNOS while up-regulated the level of Bax. Besides, the ratios of P-p65/p65, P-IκBα/IκBα, P-ERK/ERK, P-JNK/JNK, and P-p38/p38 were decreased, and the nuclear translocation of p65 induced by IL-1β was blocked by COR. In vivo results indicated that COR significantly reduced the paw swelling and arthritis score in AIA rats, and inhibited synovial tissue hyperplasia and erosion, as well as inflammatory cells infiltration. It also decreased the serum pro-inflammatory cytokines (IL-6, TNF-α, IL-1β, and IL-17) production. CONCLUSION These results revealed that COR exerted anti-rheumatoid arthritis effect, and its underlying mechanisms may be related to inhibiting the proliferation, migration, and invasion of synovial fibroblasts, enhancing cell apoptosis, and suppressing inflammatory responses via downregulating NF-κB and MAPK signaling pathways.
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Affiliation(s)
- Yue Shen
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Li Teng
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China; School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Yuhan Qu
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China; School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Jie Liu
- School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Xudong Zhu
- School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Shan Chen
- School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Longfei Yang
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Yuehui Huang
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Qin Song
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China.
| | - Qiang Fu
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China.
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Binette V, Côté S, Haddad M, Nguyen PT, Bélanger S, Bourgault S, Ramassamy C, Gaudreault R, Mousseau N. Corilagin and 1,3,6-Tri- O-galloy-β-D-glucose: potential inhibitors of SARS-CoV-2 variants. Phys Chem Chem Phys 2021; 23:14873-14888. [PMID: 34223589 DOI: 10.1039/d1cp01790j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The COVID-19 disease caused by the virus SARS-CoV-2, first detected in December 2019, is still emerging through virus mutations. Although almost under control in some countries due to effective vaccines that are mitigating the worldwide pandemic, the urgency to develop additional vaccines and therapeutic treatments is imperative. In this work, the natural polyphenols corilagin and 1,3,6-tri-O-galloy-β-d-glucose (TGG) are investigated to determine the structural basis of inhibitor interactions as potential candidates to inhibit SARS-CoV-2 viral entry into target cells. First, the therapeutic potential of the ligands are assessed on the ACE2/wild-type RBD. We first use molecular docking followed by molecular dynamics, to take into account the conformational flexibility that plays a significant role in ligand binding and that cannot be captured using only docking, and then analyze more precisely the affinity of these ligands using MMPBSA binding free energy. We show that both ligands bind to the ACE2/wild-type RBD interface with good affinities which might prevent the ACE2/RBD association. Second, we confirm the potency of these ligands to block the ACE2/RBD association using a combination of surface plasmon resonance and biochemical inhibition assays. These experiments confirm that TGG and, to a lesser extent, corilagin, inhibit the binding of RBD to ACE2. Both experiments and simulations show that the ligands interact preferentially with RBD, while weak binding is observed with ACE2, hence, avoiding potential physiological side-effects induced by the inhibition of ACE2. In addition to the wild-type RBD, we also study numerically three RBD mutations (E484K, N501Y and E484K/N501Y) found in the main SARS-CoV-2 variants of concerns. We find that corilagin could be as effective for RBD/E484K but less effective for the RBD/N501Y and RBD/E484K-N501Y mutants, while TGG strongly binds at relevant locations to all three mutants, demonstrating the significant interest of these molecules as potential inhibitors for variants of SARS-CoV-2.
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Affiliation(s)
- Vincent Binette
- Départment de physique, Université de Montréal, Case postale 6128, succursale Centre-ville, Montréal, QC, H3C 3J7 Canada.
| | - Sébastien Côté
- Départment de physique, Université de Montréal, Case postale 6128, succursale Centre-ville, Montréal, QC, H3C 3J7 Canada. and Cégep de Saint-Jérôme, 455 Rue Fournier, Saint-Jérôme, QC, J7Z 4V2 Canada
| | - Mohamed Haddad
- Centre Armand-Frappier Santé Biotechnologie, 531 boulevard des Prairies, Laval, QC, H7V 1B7 Canada.
| | - Phuong Trang Nguyen
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montreal, QC, H2X 2J6 Canada.
| | - Sébastien Bélanger
- Department of Physics, McGill University, 3600 University Street, Montreal, QC, H3A 2T8 Canada
| | - Steve Bourgault
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montreal, QC, H2X 2J6 Canada.
| | - Charles Ramassamy
- Centre Armand-Frappier Santé Biotechnologie, 531 boulevard des Prairies, Laval, QC, H7V 1B7 Canada.
| | - Roger Gaudreault
- Départment de physique, Université de Montréal, Case postale 6128, succursale Centre-ville, Montréal, QC, H3C 3J7 Canada.
| | - Normand Mousseau
- Départment de physique, Université de Montréal, Case postale 6128, succursale Centre-ville, Montréal, QC, H3C 3J7 Canada.
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Gaudreault R, Hervé V, van de Ven TGM, Mousseau N, Ramassamy C. Polyphenol-Peptide Interactions in Mitigation of Alzheimer's Disease: Role of Biosurface-Induced Aggregation. J Alzheimers Dis 2021; 81:33-55. [PMID: 33749653 DOI: 10.3233/jad-201549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Alzheimer's disease (AD) is the most common age-related neurodegenerative disorder, responsible for nearly two-thirds of all dementia cases. In this review, we report the potential AD treatment strategies focusing on natural polyphenol molecules (green chemistry) and more specifically on the inhibition of polyphenol-induced amyloid aggregation/disaggregation pathways: in bulk and on biosurfaces. We discuss how these pathways can potentially alter the structure at the early stages of AD, hence delaying the aggregation of amyloid-β (Aβ) and tau. We also discuss multidisciplinary approaches, combining experimental and modelling methods, that can better characterize the biochemical and biophysical interactions between proteins and phenolic ligands. In addition to the surface-induced aggregation, which can occur on surfaces where protein can interact with other proteins and polyphenols, we suggest a new concept referred as "confinement stability". Here, on the contrary, the adsorption of Aβ and tau on biosurfaces other than Aβ- and tau-fibrils, e.g., red blood cells, can lead to confinement stability that minimizes the aggregation of Aβ and tau. Overall, these mechanisms may participate directly or indirectly in mitigating neurodegenerative diseases, by preventing protein self-association, slowing down the aggregation processes, and delaying the progression of AD.
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Affiliation(s)
- Roger Gaudreault
- Department of Physics, Université de Montréal, Montreal, QC, Canada
| | - Vincent Hervé
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, QC, Canada
| | | | - Normand Mousseau
- Department of Physics, Université de Montréal, Montreal, QC, Canada
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Changhong K, Peng Y, Yuan Z, Cai J. Ginsenoside Rb1 protected PC12 cells from Aβ 25-35-induced cytotoxicity via PPARγ activation and cholesterol reduction. Eur J Pharmacol 2020; 893:173835. [PMID: 33359145 DOI: 10.1016/j.ejphar.2020.173835] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/09/2020] [Accepted: 12/18/2020] [Indexed: 12/27/2022]
Abstract
Accumulating evidences suggest that amyloid β (Aβ)-peptide plays a key role in pathogenesis of Alzheimer's disease (AD) through aggregation and deposition into plaques in neuronal cells. Membrane components such as cholesterol and gangliosides not only enhance the production of amyloidogenic Aβ fragments, but also appear to strengthen Aβ-membrane interaction. Ginsenoside Rb1 (GRb1) is a major active component of Panax, which is widely used to improve learning and memory. In the present study, whether ginsenoside Rb1 could protect pheochromocytoma cells (PC12 cells) from Aβ25-35-induced cytotoxicity including inhibiting cell growth, inducing apoptosis, producing reactive oxygen species (ROS), destroying the cytoskeleton and bringing about membrane toxicity was investigated. Our results indicated that ginsenoside Rb1 could serve as an agonist of peroxisom proliferator-activated receptor-γ (PPARγ) and reduce the level of cholesterol in AD model cells. Reduction of the Aβ25-35-induced cytotoxicity by lowering cholesterol was evidenced by reduction of ROS production, lipid peroxidation, and protection of cytoskeleton and membrane surface rigidity. Most importantly, the viability of PC12 cells increased from 50.42 ± 5.51% for the AD group to 102.72 ± 4.34% for the 50 μM ginsenoside Rb1 group with cholesterol reduction. Our results suggested that ginsenoside Rb1 might function as an effective candidate to promote reverse cholesterol transport and lower ROS production, therefore providing a new insight into prevention and treatment of AD.
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Affiliation(s)
- Ke Changhong
- Department of Chemistry, Jinan University, Guangzhou, 510632, China; YZ Health-tech Inc., Hengqin District, Zhuhai, 519000, China
| | - Yuan Peng
- Department of Chemistry, Jinan University, Guangzhou, 510632, China
| | - Zhengqiang Yuan
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 51006, China.
| | - Jiye Cai
- Department of Chemistry, Jinan University, Guangzhou, 510632, China.
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Hou X, Cheng Z, Wang J. Preparative purification of corilagin from Phyllanthus by combining ionic liquid extraction, prep-HPLC, and precipitation. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3382-3389. [PMID: 32930226 DOI: 10.1039/d0ay00860e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, a green extraction and purification process for the rapid preparation of corilagin from Phyllanthus has been designed using an aqueous ionic liquid coupled with preparative high-performance liquid chromatography (prep-HPLC) and precipitation. The results showed that the optimum extraction process for corilagin involved mixing Phyllanthus tenellus Roxb. with 0.4 M [BMIm]Br at a liquid-solid ratio of 10 : 1 and dispersing the mixture by ultrasonication at 50 °C for 15 min. Macroporous resin D101 and prep-HPLC were employed for [BMIm]Br removal and corilagin separation to yield corilagin of 86.49% purity. Subsequently, corilagin was further purified by water precipitation to achieve 99.12% purity. The results indicated the successful development of a new rapid and green process to prepare corilagin on a large scale from plants using [BMIm]Br. This promising process can be applied for the preparative separation and purification of other active compounds from complex plant systems.
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Affiliation(s)
- Xiaodong Hou
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Zitao Cheng
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Jiao Wang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
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Wang W, Yang L, Liu T, Ma Y, Huang S, He M, Wang J, Wen A, Ding Y. Corilagin ameliorates sleep deprivation-induced memory impairments by inhibiting NOX2 and activating Nrf2. Brain Res Bull 2020; 160:141-149. [DOI: 10.1016/j.brainresbull.2020.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/07/2020] [Accepted: 03/11/2020] [Indexed: 12/11/2022]
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12
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Hao E, Qin J, Wei W, Miao J, Xie Y, Pan X, Wu H, Xie J, Fan X, Du Z, Hou X, Deng J. Identification and Analysis of Components in Yizhi Granule and Cynomolgus Monkey Plasma after Oral Administration by UPLC/ESI-Q-TOF MS and Their Protective Effects on PC12 Cells. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2020; 2020:5165631. [PMID: 32351755 PMCID: PMC7171651 DOI: 10.1155/2020/5165631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 01/28/2020] [Indexed: 05/08/2023]
Abstract
Yizhi Granule (YZG) is a health food containing six traditional Chinese medicines (TCMs). It improves memory barriers in rat experiments. Here, we describe the first fast and sensitive ultraperformance liquid chromatography/electrospray ionization quadrupole time-of-flight mass spectrometry (UPLC/ESI-Q-TOF MS) method for analyzing YZG in plasma. We used this technique for studies in cynomolgus monkey plasma. By comparing retention time, MS, and MS/MS data of reference compounds, 70 compounds were detected in YZG. Of these, 63 were identified including 60 saponins, 2 flavones, and 1 methyl ester. There were 33 saponins, 1 flavone, and 1 methyl ester in the plasma. Next, to study the therapeutic properties of YZG, the neuroprotective effect of some of the absorbed components was evaluated using PC12 cell damage caused by the Aβ 25-35 model. The results showed that 9 compounds protect PC12 cells from Aβ 25-35 with cell viability (%) of 111.00 ± 8.12 (G-Rb1), 102.20 ± 4.22 (G-Rb2), 100.34 ± 6.47 (G-Rd), 102.83 ± 2.10 (G-Re), 101.68 ± 7.64 (NG-Fa), 101.19 ± 7.83 (NG-R1), 102.53 ± 0.55 (NG-R2), 106.88 ± 4.95 (gypenoside A), and 103.95 ± 4.11 (gypenoside XLIX), respectively, versus the control group (87.51 ± 6.59). These results can reveal the real pharmacodynamic basis of YZG and provide a theoretical basis for subsequent studies. It can also provide some references for the research of Alzheimer's disease.
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Affiliation(s)
- Erwei Hao
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Postdoctoral Workstation, Guangxi Institue of Medicinal Plants, Nanning 530023, China
| | - Jianfeng Qin
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Wei Wei
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Jianhua Miao
- Postdoctoral Workstation, Guangxi Institue of Medicinal Plants, Nanning 530023, China
| | - Yan Xie
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Xianglong Pan
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Hangxuan Wu
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Jinling Xie
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Xiaosu Fan
- Experimental Center of College of Agriculture, Guangxi University, Nanning 530005, China
| | - Zhengcai Du
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Postdoctoral Workstation, Guangxi Institue of Medicinal Plants, Nanning 530023, China
| | - Xiaotao Hou
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Postdoctoral Workstation, Guangxi Institue of Medicinal Plants, Nanning 530023, China
| | - Jiagang Deng
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
- Postdoctoral Workstation, Guangxi Institue of Medicinal Plants, Nanning 530023, China
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Zhang C, Zhao X, Lin S, Liu F, Ma J, Han Z, Jia F, Xie W, Zhang Q, Li X. Neuroprotective Effect of ent-Kaur-15-en-17-al-18-oic Acid on Amyloid Beta Peptide-Induced Oxidative Apoptosis in Alzheimer's Disease. Molecules 2019; 25:molecules25010142. [PMID: 31905798 PMCID: PMC6982857 DOI: 10.3390/molecules25010142] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/16/2019] [Accepted: 12/27/2019] [Indexed: 01/04/2023] Open
Abstract
ent-Kaur-15-en-17-al-18-oic acid, extracted from the Chinese well known folk herb Leontopodium longifolium, performed a significantly neuroprotective effect on amyloid beta peptide 25-35 (Aβ25-35)-induced SH-SY5Y cells neurotoxicity in Alzheimer's disease. The results demonstrated that this compound maintained oxidative stress balance, reduced levels of reactive oxygen species (ROS), malondialdehyde (MDA), and improved contents of glutathione (GSH) and superoxide dismutase (SOD) without obvious cytotoxicity. This compound also obviously relieved oxidative stress-induced apoptosis associated with p53 and nuclear factor κB (NF-κB) pathways accompanied by upregulating B-cell lymphoma-2 (bcl-2) and downregulating p53, nuclear factor κB (NF-κB), Bax, Cleaved-caspase 3, and Cytochrome C protein expressions further. Briefly, ent-kaur-15-en-17-al-18-oic acid protected cells from oxidative apoptosis associated with p53 and NF-κB pathways.
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Affiliation(s)
- Caiyun Zhang
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Xingming Zhao
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Shiqi Lin
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Fangyuan Liu
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Jiahui Ma
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Zhuo Han
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Fujuan Jia
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Weidong Xie
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Qian Zhang
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
| | - Xia Li
- Marine College, Shandong University, Weihai 264209, Shandong, China; (C.Z.); (X.Z.); (S.L.); (F.L.); (J.M.); (Z.H.); (F.J.); (W.X.); (Q.Z.)
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
- Correspondence: ; Tel.: +86-631-5688303
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Harikrishnan H, Jantan I, Alagan A, Haque MA. Modulation of cell signaling pathways by Phyllanthus amarus and its major constituents: potential role in the prevention and treatment of inflammation and cancer. Inflammopharmacology 2019; 28:1-18. [PMID: 31792765 DOI: 10.1007/s10787-019-00671-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/15/2019] [Indexed: 12/12/2022]
Abstract
The causal and functional connection between inflammation and cancer has become a subject of much research interest. Modulation of cell signaling pathways, such as those involving mitogen activated protein kinases (MAPKs), nuclear factor kappa β (NF-κB), phosphatidylinositol 3-kinase and protein kinase B (PI3K/Akt), and Wnt, and their outcomes play a fundamental role in inflammation and cancer. Activation of these cell signaling pathways can lead to various aspects of cancer-related inflammation. Hence, compounds able to modulate inflammation-related molecular targets are sought after in anticancer drug development programs. In recent years, plant extracts and their metabolites have been documented with potential in the prevention and treatment of cancer and inflammatory ailments. Plants possessing anticancer and anti-inflammatory properties due to their bioactive constituents have been reported to modulate the molecular and cellular pathways which are related to inflammation and cancer. In this review we focus on the flavonoids (astragalin, kaempferol, quercetin, rutin), lignans (phyllanthin, hypophyllanthin, and niranthin), tannins (corilagin, geraniin, ellagic acid, gallic acid), and triterpenes (lupeol, oleanolic acid, ursolic acid) of Phyllanthus amarus, which exert various anticancer and anti-inflammatory activities via perturbation of the NF-κB, MAPKs, PI3K/Akt, and Wnt signaling networks. Understanding the underlying mechanisms involved may help future research to develop drug candidates for prevention and new treatment for cancer and inflammatory diseases.
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Affiliation(s)
- Hemavathy Harikrishnan
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Ibrahim Jantan
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, Lakeside Campus, 47500, Subang Jaya, Selangor, Malaysia. .,Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia.
| | - Akilandeshwari Alagan
- Crescent School of Pharmacy, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600 048, India
| | - Md Areeful Haque
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, 4318, Bangladesh
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15
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Management of oxidative stress and other pathologies in Alzheimer’s disease. Arch Toxicol 2019; 93:2491-2513. [DOI: 10.1007/s00204-019-02538-y] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/14/2019] [Indexed: 12/13/2022]
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16
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Gaudreault R, Mousseau N. Mitigating Alzheimer’s Disease with Natural Polyphenols: A Review. Curr Alzheimer Res 2019; 16:529-543. [DOI: 10.2174/1567205016666190315093520] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 02/14/2019] [Accepted: 03/13/2019] [Indexed: 11/22/2022]
Abstract
:According to Alzheimer’s Disease International (ADI), nearly 50 million people worldwide were living with dementia in 2017, and this number is expected to triple by 2050. Despite years of research in this field, the root cause and mechanisms responsible for Alzheimer’s disease (AD) have not been fully elucidated yet. Moreover, promising preclinical results have repeatedly failed to translate into patient treatments. Until now, none of the molecules targeting AD has successfully passed the Phase III trial. Although natural molecules have been extensively studied, they normally require high concentrations to be effective; alternately, they are too large to cross the blood-brain barrier (BBB).:In this review, we report AD treatment strategies, with a virtually exclusive focus on green chemistry (natural phenolic molecules). These include therapeutic strategies for decreasing amyloid-β (Aβ) production, preventing and/or altering Aβ aggregation, and reducing oligomers cytotoxicity such as curcumin, (-)-epigallocatechin-3-gallate (EGCG), morin, resveratrol, tannic acid, and other natural green molecules. We also examine whether consideration should be given to potential candidates used outside of medicine and nutrition, through a discussion of two intermediate-sized green molecules, with very similar molecular structures and key properties, which exhibit potential in mitigating Alzheimer’s disease.
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Affiliation(s)
- Roger Gaudreault
- Department of Physics, Universit�© de Montr�©al, Case Postale 6128, Succursale Centre-ville, Montreal (QC), Canada
| | - Normand Mousseau
- Department of Physics, Universit�© de Montr�©al, Case Postale 6128, Succursale Centre-ville, Montreal (QC), Canada
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Li X, Deng Y, Zheng Z, Huang W, Chen L, Tong Q, Ming Y. Corilagin, a promising medicinal herbal agent. Biomed Pharmacother 2018. [DOI: 10.1016/j.biopha.2018.01.030 pmid: 29324311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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18
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Youn K, Lee S, Jun M. Gamma-linolenic acid ameliorates Aβ-induced neuroinflammation through NF-κB and MAPK signalling pathways. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.12.065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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19
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Li X, Deng Y, Zheng Z, Huang W, Chen L, Tong Q, Ming Y. Corilagin, a promising medicinal herbal agent. Biomed Pharmacother 2018; 99:43-50. [PMID: 29324311 DOI: 10.1016/j.biopha.2018.01.030] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/02/2018] [Accepted: 01/03/2018] [Indexed: 12/31/2022] Open
Abstract
Corilagin, a gallotannin, is one of the major active components of many ethnopharmacological plants. It was isolated from Caesalpinia coriaria (Jacq.) Willd. (dividivi) by Schmidt in 1951 for the first time. In the past few decades, corilagin was reported to exhibit anti-tumor, anti-inflammatory and hepatoprotective activities, etc. However, little attention was paid to its pharmacological properties due to the complicated and inefficient extract method. In recent years, with the development of extraction technology corilagin was much easier to obtain than before. Thus, people return to pay attention to its anti-tumor, hepatoprotective, and anti-inflammatory activities, particularly as an anti-tumor agent candidate. Our research team had focused on the distribution, preparation and anti-tumor activity of corilagin since 2005. We found corilagin showed good anti-tumor activity on hepatocellular carcinoma and ovarian cancer. What's more, corilagin showed a low level of toxicity toward normal cells and tissues. Due to the extensive attention that corilagin has received, we present a systematic review of the pharmacological effects of corilagin. In this review, we summarized all the pharmacological effects of corilagin with a focus on the molecular mechanism of anti-tumor activity and show you how corilagin affected the signaling pathways of tumor cells as well as its physicochemical properties, distribution and preparation methods.
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Affiliation(s)
- Xuan Li
- Institute of Chemical Engnieering, Huaqiao University, Xiamen, Fujian 361021, China
| | - Yuan Deng
- Institute of Chemical Engnieering, Huaqiao University, Xiamen, Fujian 361021, China; Key Laboratory of Xiamen City for Plant Introduction & Quarantine and Plant Product, Xiamen Overseas Chinese Subtropical Plant Introduction Garden, Xiamen, Fujian 361002, China
| | - Zhizhong Zheng
- Key Laboratory of Xiamen City for Plant Introduction & Quarantine and Plant Product, Xiamen Overseas Chinese Subtropical Plant Introduction Garden, Xiamen, Fujian 361002, China
| | - Wen Huang
- Key Laboratory of Fujian Province for Physiology and Biochemistry of Subtropical Plant, Fujian Institute of Subtropical Botany, Xiamen, Fujian 361006, China
| | - Lianghua Chen
- Key Laboratory of Fujian Province for Physiology and Biochemistry of Subtropical Plant, Fujian Institute of Subtropical Botany, Xiamen, Fujian 361006, China
| | - Qingxuan Tong
- Key Laboratory of Fujian Province for Physiology and Biochemistry of Subtropical Plant, Fujian Institute of Subtropical Botany, Xiamen, Fujian 361006, China
| | - Yanlin Ming
- Institute of Chemical Engnieering, Huaqiao University, Xiamen, Fujian 361021, China; Key Laboratory of Xiamen City for Plant Introduction & Quarantine and Plant Product, Xiamen Overseas Chinese Subtropical Plant Introduction Garden, Xiamen, Fujian 361002, China; Key Laboratory of Fujian Province for Physiology and Biochemistry of Subtropical Plant, Fujian Institute of Subtropical Botany, Xiamen, Fujian 361006, China.
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He D, Tan J, Zhang J. miR-137 attenuates Aβ-induced neurotoxicity through inactivation of NF-κB pathway by targeting TNFAIP1 in Neuro2a cells. Biochem Biophys Res Commun 2017; 490:941-947. [PMID: 28655611 DOI: 10.1016/j.bbrc.2017.06.144] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 06/23/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Accumulation of β-amyloid (Aβ) and neuroinflammation are implicated in the pathogenesis and development of Alzheimer's disease (AD). Neuron-enriched miR-137 was aberrantly downregulated and may be associated with the pathogenesis of AD. However, the detailed function of miR-137 in AD pathogenesis and the molecular mechanism have not been elucidated. METHODS The expressions of miR-137 and tumor necrosis factor alpha (TNFα)-induced protein 1 (TNFAIP1) at mRNA and protein levels in primary mouse cortical neurons and Neuro2a (N2a) cells exposed to different concentrations of Aβ25-35 were examined by qRT-PCR and western blot. Luciferase reporter assay was used to confirm the potential target of miR-137. MTT assay, flow cytometry analysis, caspase-3 activity assay, Enzyme-linked immunosorbent assay (ELISA), and western blot were used to detect cell viability, apoptosis, caspase-3 activity, Nuclear factor-kappa B (NF-κB) activity and level, respectively. RESULTS Aβ25-35 downregulated miR-137 and upregulated TNFAIP1 in primary mouse cortical neurons and N2a cells. In addition, miR-137 was found to directly target TNFAIP1 and suppress its mRNA and protein levels. Moreover, miR-137 restoration and TNFAIP1 knockdown facilitate Aβ25-35-induced cell toxicity, apoptosis, caspase-3 activity, and activated NF-κB in N2a cells, which was partially abolished by TNFAIP1 overexpression. CONCLUSION miR-137 attenuated Aβ-induced neurotoxicity through inactivation of NF-κB pathway by targeting TNFAIP1 in N2a cells, shedding light on the molecular mechanism of miR-137 underlying Aβ-induced neurotoxicity.
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Affiliation(s)
- Dan He
- Department of Neurology, The People's Hospital of Zhengzhou University, Zhengzhou, 450003, PR China; Department of Neurology, Sanbo Brain Hospital of Capital Medical University, Beijing, 100093, PR China
| | - Jun Tan
- Department of Neurology, The Third Affiliated Hospital of Xinxiang Medical College, Xinxiang, 453000, PR China
| | - Jiewen Zhang
- Department of Neurology, The People's Hospital of Zhengzhou University, Zhengzhou, 450003, PR China.
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