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IDO-1 inhibition protects against neuroinflammation, oxidative stress and mitochondrial dysfunction in 6-OHDA induced murine model of Parkinson's disease. Neurotoxicology 2021; 84:184-197. [PMID: 33774066 DOI: 10.1016/j.neuro.2021.03.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 03/15/2021] [Accepted: 03/22/2021] [Indexed: 01/02/2023]
Abstract
Parkinson's disease (PD), a common neurodegenerative motor disorder characterized by striatal dopaminergic neuronal loss and localized neuroinflammation in the midbrain region. Activation of microglia is associated with various inflammatory mediators and Kynurenine pathway (KP) being one of the major regulator of immune response, is involved in the neuroinflammatory and neurotoxic cascade in PD. In the current study, 1-Methyltryptophan (1-MT), an Indolamine-2,3-dioxygenase-1 (IDO-1) inhibitor was tested at different doses (2.5 mg/kg, 5 mg/kg and 10 mg/kg) for its effect on behavioral parameters, oxidative stress, neuroinflammation, apoptosis, mitochondrial dysfunction, neurotransmitter levels, biochemical and behavioral alterations in unilateral 6-OHDA (3 μg/μL) murine model of PD. The results showed improved locomotion in open field test and motor coordination in rota-rod, reduced oxidative stress, neuroinflammatory markers (TNF-α, IFN-γ, IL-6), mitochondrial dysfunction and neuronal apoptosis (caspase-3). Also, restoration of neurotransmitter levels (dopamine and homovanillic acid) in the striatum and increased striatal BDNF levels were observed. Overall findings suggest that 1-MT could be a potential candidate for further studies to explore its possibility as an alternative in the pharmacotherapy of PD.
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Fucoxanthin Prevents 6-OHDA-Induced Neurotoxicity by Targeting Keap1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6688708. [PMID: 33777321 PMCID: PMC7972864 DOI: 10.1155/2021/6688708] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/09/2021] [Accepted: 02/16/2021] [Indexed: 12/13/2022]
Abstract
As the most abundant marine carotenoid extracted from seaweeds, fucoxanthin (FUC) is considered to have excellent neuroprotective activity. However, the target of FUC for its neuroprotective properties remains largely unclear. Oxidative stress is one of the initiating factors causing neuronal cell loss and necrosis, and it is also an important inducement of Parkinson's disease (PD). In the present study, the neuroprotective effect of FUC was assessed using a 6-hydroxydopamine- (6-OHDA-) induced neurotoxicity model. FUC suppressed 6-OHDA-induced accumulation of intracellular ROS, the disruption of mitochondrial membrane potential, and cell apoptosis through the Nrf2-ARE pathway. Keap1 as a repressor of Nrf2 can regulate the activity of Nrf2. Here, the biolayer interferometry (BLI) assay demonstrated that FUC specifically targeted Keap1 and inhibited the interaction between Keap1 and Nrf2. FUC bound to the hydrophobic region of Keap1 pocket and formed hydrogen bonding interactions with Arg415 and Tyr525. Besides, it also dose-dependently upregulated the expressions of antioxidant enzymes, such as nicotinamide heme oxygenase-1, glutamate-cysteine ligase modifier subunit, and glutamate-cysteine ligase catalytic subunit, in 6-OHDA-induced PC12 cells. In 6-OHDA-exposed zebrafish, FUC pretreatment significantly increased the total swimming distance of zebrafish larvae and improved the granular region of the brain tissue damage. These results suggested that FUC could protect the neuronal cells against 6-OHDA-induced injury via targeting Keap1.
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Wang BN, Wu CB, Chen ZM, Zheng PP, Liu YQ, Xiong J, Xu JY, Li PF, Mamun AA, Ye LB, Zheng ZL, Wu YQ, Xiao J, Wang J. DL-3-n-butylphthalide ameliorates diabetes-associated cognitive decline by enhancing PI3K/Akt signaling and suppressing oxidative stress. Acta Pharmacol Sin 2021; 42:347-360. [PMID: 33462377 PMCID: PMC8027654 DOI: 10.1038/s41401-020-00583-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023] Open
Abstract
DL-3-n-Butylphthalide (DL-NBP), a small molecular compound extracted from the seeds of Apium graveolens Linn (Chinese celery), has been shown to exert neuroprotective effects due to its anti-inflammatory, anti-oxidative and anti-apoptotic activities. DL-NBP not only protects against ischemic cerebral injury, but also ameliorates vascular cognitive impairment in dementia patients including AD and PD. In the current study, we investigated whether and how DL-NBP exerted a neuroprotective effect against diabetes-associated cognitive decline (DACD) in db/db mice, a model of type-2 diabetes. db/db mice were orally administered DL-NBP (20, 60, 120 mg· kg-1· d-1) for 8 weeks. Then the mice were subjected to behavioral test, their brain tissue was collected for morphological and biochemical analyses. We showed that oral administration of DL-NBP significantly ameliorated the cognitive decline with improved learning and memory function in Morris water maze testing. Furthermore, DL-NBP administration attenuated diabetes-induced morphological alterations and increased neuronal survival and restored the levels of synaptic protein PSD95, synaptophysin and synapsin-1 as well as dendritic density in the hippocampus, especially at a dose of 60 mg/kg. Moreover, we revealed that DL-NBP administration suppressed oxidative stress by upregulating Nrf2/HO-1 signaling, and increased brain-derived neurotrophic factor (BDNF) expression by activating PI3K/Akt/CREB signaling in the hippocampus. These beneficial effects of DL-NBP were observed in high glucose-treated PC12 cells. Our results suggest that DL-NBP may be a potential pharmacologic agent for the treatment of DACD.
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Affiliation(s)
- Bei-Ni Wang
- Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Cheng-Biao Wu
- Research Center, Affiliated Xiangshan Hospital, Wenzhou Medical University, Ningbo, 315700, China
| | - Zi-Miao Chen
- Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Pei-Pei Zheng
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Ya-Qian Liu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Jun Xiong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Jing-Yu Xu
- The Institute of Life Sciences, Engineering Laboratory of Zhejiang province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, 325035, China
| | - Pei-Feng Li
- Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Abdullah Al Mamun
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Li-Bing Ye
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Zhi-Long Zheng
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China
| | - Yan-Qing Wu
- The Institute of Life Sciences, Engineering Laboratory of Zhejiang province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, 325035, China.
| | - Jian Xiao
- Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000, China.
| | - Jian Wang
- Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
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Amauroderma rugosum Protects PC12 Cells against 6-OHDA-Induced Neurotoxicity through Antioxidant and Antiapoptotic Effects. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6683270. [PMID: 33628381 PMCID: PMC7889343 DOI: 10.1155/2021/6683270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/01/2021] [Accepted: 01/25/2021] [Indexed: 12/29/2022]
Abstract
Amauroderma rugosum (AR) is a dietary mushroom in the Ganodermataceae family whose pharmacological activity and medicinal value have rarely been reported. In this study, the antioxidant capacity and neuroprotective effects of AR were investigated. The aqueous extract of AR was confirmed to contain phenolic compounds, polysaccharides, and triterpenes. The results of 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and total antioxidant capacity assays revealed that AR extract scavenged reactive oxygen species. Moreover, AR extract decreased the cytotoxicity, oxidative stress, mitochondrial dysfunction, and apoptosis of PC12 cells induced by 6-hydroxydopamine (6-OHDA). In addition, 6-OHDA upregulated the expressions of proapoptotic proteins and downregulated the Akt (protein kinase B)/mTOR- (mammalian target of rapamycin-) and MEK (mitogen-activated protein kinase kinase)/ERK- (extracellular signal-regulated kinases-) dependent signaling pathways. These effects of 6-OHDA were abolished or partially reversed by AR extract. Furthermore, the neuroprotective effects of AR in 6-OHDA-treated PC12 cells were significantly abolished by Akt and MEK inhibitor. Thus, AR extract possesses neuroprotective effects, probably through its antioxidant and antiapoptotic effects. These findings suggest the potential application of AR in the prevention or treatment of oxidative stress-related neurodegenerative diseases such as Parkinson's disease.
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Berberine alleviates rotenone-induced cytotoxicity by antioxidation and activation of PI3K/Akt signaling pathway in SH-SY5Y cells. Neuroreport 2021; 31:41-47. [PMID: 31688419 DOI: 10.1097/wnr.0000000000001365] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Berberine, an isoquinoline alkaloid isolated from traditional Chinese medicine, has been widely studied for its efficacy in the treatment of neurodegenerative diseases. However, berberine-mediated neuroprotection in the pathogenesis of Parkinson's disease is still uncertain. In this study, the effects of berberine on rotenone-induced neurotoxicity in SH-SY5Y cells were investigated. The results showed that berberine treatment significantly alleviated rotenone-induced decrease in the cell viability in SH-SY5Y cells. Further studies demonstrated that berberine suppressed the production of intracellular reactive oxygen species, restored the mitochondrial transmembrane potential, increased Bcl-2/Bax ratio, and decreased caspase-3 activation that induced by rotenone. Furthermore, berberine also restored the phosphorylation of Akt, which was downregulated by rotenone in SH-SY5Y cells. These results suggest that berberine protects rotenone-treated SH-SY5Y cells by antioxidation and activation of PI3K/Akt signaling pathway.
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Alginate Oligosaccharide Ameliorates D-Galactose-Induced Kidney Aging in Mice through Activation of the Nrf2 Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6623328. [PMID: 33506023 PMCID: PMC7811433 DOI: 10.1155/2021/6623328] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/13/2020] [Accepted: 12/26/2020] [Indexed: 02/07/2023]
Abstract
Aging is an independent risk factor for the development of age-related progressive kidney injury. As a part of the aging process, kidney aging has been indicated to be associated with oxidative stress-induced damage. Ameliorating oxidative damage is therefore considered a promising strategy for delaying kidney aging. Alginate oligosaccharide (AOS) has been reported to have a wide range of biological and pharmacological activities. However, no studies have focused on the role of AOS in delaying the kidney aging process. In this study, we aimed to evaluate the potential effects of AOS on kidney aging and its possible mechanisms. Subcutaneous injection of D-galactose (D-gal) (200 mg·kg−1·d−1) in C57BL/6J mice for 8 weeks was used to establish the aging model. AOS (200 mg·kg−1·d−1) was administered via oral gavage for the last four weeks. As a result, AOS inhibited the D-gal-induced upregulation of aging markers and significantly improved the kidney index and kidney function of D-gal-induced mice. In addition, AOS ameliorated the degree of tissue damage and fibrosis in the aging kidney. To further explore the potential mechanisms by which AOS attenuates the kidney aging process, the associated oxidative stress-induced damage was analyzed in depth. The data showed that AOS upregulated the expression of Klotho and decreased malondialdehyde levels by increasing the expression of antioxidant enzymes. Furthermore, our results suggested that AOS activated the nuclear factor erythrogen-2 associated factor 2 (Nrf2) pathway by promoting Nrf2 nuclear translocation in aging mice and upregulated the downstream expression of heme oxygenase-1 (HO-1) and NADPH quinone oxidoreductase 1 (NQO1). In conclusion, the present study demonstrated that AOS is a promising agent for attenuating kidney aging, and the underlying molecular mechanisms are related to the activation of the Nrf2 signaling pathway.
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Wu W, He X, Xie S, Li B, Chen J, Qu Y, Li B, Lei M, Liu X. Protective effects of Huang-Lian-Jie-Du-Tang against A β25-35-induced memory deficits and oxidative stress in rats. J Int Med Res 2021; 48:300060519893859. [PMID: 32223685 PMCID: PMC7133406 DOI: 10.1177/0300060519893859] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Objective Huang-Lian-Jie-Du-Tang (HLJDT), a traditional Chinese medicine, improves cognitive ability in rat models of Alzheimer’s disease (AD). The objective of this study was to evaluate the protective effects of HLJDT on learning and memory impairment that are caused by Aβ25–35. Methods Rats were randomly assigned to the following groups: control (water), Aβ25–35, donepezil hydrochloride 1.05 mg/kg, HLJDT 6 g/kg, HLJDT 3 g/kg, and HLJDT 1.5 g/kg and the corresponding drugs were administered for 28 days by oral gavage. HLJDT for the prevention of Aβ25–35-induced injury in rats and the underlying mechanisms were assessed. Aβ25–35 and amyloid precursor protein (APP) levels were measured in the hippocampal specimens. Total superoxide dismutase (T-SOD), glutathione (GSH), and malondialdehyde (MDA) levels in the hippocampus were also measured. The ultrastructure of CA1 hippocampal region was observed using electron microscopy. Results HLJDT treatment ameliorated impaired learning and memory significantly, decreased Aβ25–35, and APP levels in the hippocampus, increased T-SOD and GSH activity and decreased the MDA concentration, and alleviated the nuclear and cytoplasmic abnormalities of the hippocampal CA 1 region that were induced by Aβ25–35 injection. Conclusions HLJDT might decrease hippocampal vulnerability to Aβ25–35, suggesting its potential neuroprotective effect in AD.
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Affiliation(s)
- Wenbin Wu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Xiaojing He
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Shuling Xie
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Bin Li
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Jinxin Chen
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Yanqin Qu
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Baiyang Li
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Ming Lei
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Xuehui Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
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Luo Y, Jiang Y, He Y, Shen T, Ji L, Li F, Hu W. Vina-Ginsenoside R4 from Panax ginseng Leaves Alleviates 6-OHDA-Induced Neurotoxicity in PC12 Cells Via the PI3K/Akt/GSK-3β Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15239-15248. [PMID: 33290066 DOI: 10.1021/acs.jafc.0c06474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Vina-ginsenoside R4 (VGN4) is the first example of protopanaxatriol saponin possessing sugar chains located at C-3 and C-20 of aglycone. However, to the best of our knowledge, no report has been published on the neuroprotective effect of VGN4. In the present work, we investigated the neuroprotective effect of VGN4 against 6-hydroxydopamine (6-OHDA)-induced toxicity and its potential mechanism. Pretreatment of PC12 cells with VGN4 attenuated 6-OHDA-induced cell damage and cell apoptosis, which was correlated with the decrease of reactive oxygen species and the increase of antioxidant enzyme activities including superoxide dismutase and catalase. In addition, VGN4 markedly decreased nuclear translation of the nuclear factor-κB and PI3K/Akt/GSK/3β signaling pathway including p85, PDK1, Akt, and GSK-3β. Further studies revealed that PI3K siRNA attenuated the neuroprotective effect of VGN4 on caspase-3 activity. These data indicate that VGN4 might have the potential to be developed as a new neuroprotective functional food.
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Affiliation(s)
- Yanyan Luo
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian 223300, People's Republic of China
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, People's Republic of China
| | - Yunyao Jiang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yang He
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian 223300, People's Republic of China
| | - Ting Shen
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian 223300, People's Republic of China
| | - Lilian Ji
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian 223300, People's Republic of China
| | - Fu Li
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, People's Republic of China
| | - Weicheng Hu
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian 223300, People's Republic of China
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Zhang C, Tan Y, Feng J, Huang C, Liu B, Fan Z, Xu B, Lu T. Exploration of the Effects of Substrate Stiffness on Biological Responses of Neural Cells and Their Mechanisms. ACS OMEGA 2020; 5:31115-31125. [PMID: 33324820 PMCID: PMC7726759 DOI: 10.1021/acsomega.0c04279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/03/2020] [Indexed: 05/10/2023]
Abstract
Substrate stiffness, as a critical mechanical factor, has been proven to be an important regulator of biological responses, cellular functions, and disease occurrence. However, the effects of substrate stiffness on the phenotypes and drug responses of neural cells remain largely unknown. In this study, polydimethylsiloxane (PDMS) substrates with different stiffnesses were employed to establish the mechanical microenvironment of tissues of different organs. We studied the influences of stiffness on neural cell phenotypes, including cell viability, cell cycle, cytoskeleton structures, cell stiffness, and drug responses of neural cells for hormesis and therapeutic efficacy in neurodegenerative disorders (NDD). The results showed that the greater the range of maximum stimulatory responses, the bigger the width of the stimulatory dosage and the higher the range of maximum neuroprotective activities of hormetic chemicals in neural cells grown on the soft substrate commensurable to the stiffness of the brain, indicating that neural cells on a rigid substrate are resistant to hormetic and neuroprotective effects of hormetic chemicals against 6-hydroxydopamine (6-OHDA)-induced Parkinson's disease (PD) model. The sensitivity of neural cells on the soft substrate to drug response was attributed to the increased cell viability rate, cell cycle progression, actin stress fibers, focal adhesion formation, and decreased cell stiffness. The promoting effect of the soft substrate and the enhanced hormetic and neuroprotective effect of hormetic chemicals on soft substrates in PC12 cells were confirmed to be mediated by the upregulated EGFR/PI3K/AKT signaling pathway by RNA-Seq and bioinformatics analysis. This study demonstrates that the biomechanical properties of the neural microenvironment play important roles in cell phenotypes and drug responses of neural cells in vitro and suggests that substrate stiffness should be considered in the anti-NDD drug design and treatment.
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Affiliation(s)
- Chao Zhang
- School
of Chinese Pharmacy, Beijing University
of Chinese Medicine, Beijing 100102, China
| | - Yan Tan
- School
of Life Sciences, Beijing University of
Chinese Medicine, Beijing 100102, China
| | - Jiantao Feng
- Artemisinin
Research Center and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Chang Huang
- School
of Acupuncture-Moxibustion and Tuina, Beijing
University of Chinese Medicine, Beijing 100102, China
| | - Biyuan Liu
- School
of Life Sciences, Beijing University of
Chinese Medicine, Beijing 100102, China
| | - Zhu Fan
- School
of Life Sciences, Beijing University of
Chinese Medicine, Beijing 100102, China
| | - Bing Xu
- School
of Chinese Pharmacy, Beijing University
of Chinese Medicine, Beijing 100102, China
| | - Tao Lu
- School
of Life Sciences, Beijing University of
Chinese Medicine, Beijing 100102, China
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Ma L, Zhang B, Liu J, Qiao C, Liu Y, Li S, Lv H. Isoorientin exerts a protective effect against 6-OHDA-induced neurotoxicity by activating the AMPK/AKT/Nrf2 signalling pathway. Food Funct 2020; 11:10774-10785. [PMID: 33232417 DOI: 10.1039/d0fo02165b] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that is closely associated with oxidative stress. Nuclear factor erythroid 2 related factor 2 (Nrf2) is a key transcription factor that regulates oxidative stress. Isoorientin (IOT), as a dietary C-glucosyl flavone derived from rooibos tea, cereals and legumes, is thought to possess multiple pharmacological activities; however, the protective effect of IOT against 6-hydroxydopamine (6-OHDA)-induced neurotoxicity in SH-SY5Y cells is still poorly understood. The present study focused on investigating whether IOT could ameliorate neurotoxicity and the underlying mechanisms. Our findings indicated that IOT significantly inhibited neurotoxicity reduced apoptotic cell numbers, reactive oxygen species (ROS) overproduction and mitochondrial membrane potential, and modulated the expression of apoptosis-related proteins, including Bcl-2, Bax and caspase-3, which were induced by 6-OHDA. Moreover, IOT also enhanced the expression of the GCLC, GCLM, HO-1, NQO1 and Trx-1 proteins, which mostly depends on the nuclear translation of Nrf2 and reduced expression of the Keap1 protein. IOT significantly increased the phosphorylation of AMPK, ERK, GSK3β, JNK, PI3K and AKT. In contrast, pretreatment with the inhibitors of AMPK and PI3K/AKT only suppressed the nuclear translocation of Nrf2. In addition, the expression of these proteins was effectively decreased by 6-OHDA, and this effect was reversed by IOT treatment. Importantly, the effect of IOT on improving 6-OHDA induced neurotoxicity was remarkably abrogated by the application of Nrf2 siRNA and, AMPK and PI3K/AKT inhibitors. In summary, IOT might play a protective role against 6-OHDA-induced neurotoxicity by inducing the expression of various antioxidant enzymes via the activation of the AMPK/AKT-Nrf2 signalling pathway.
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Affiliation(s)
- Li Ma
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang Bayi, China.
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Gureev AP, Sadovnikova IS, Starkova NN, Starkov AA, Popov VN. p62-Nrf2-p62 Mitophagy Regulatory Loop as a Target for Preventive Therapy of Neurodegenerative Diseases. Brain Sci 2020; 10:brainsci10110847. [PMID: 33198234 PMCID: PMC7696015 DOI: 10.3390/brainsci10110847] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022] Open
Abstract
Turnover of the mitochondrial pool due to coordinated processes of mitochondrial biogenesis and mitophagy is an important process in maintaining mitochondrial stability. An important role in this process is played by the Nrf2/ARE signaling pathway, which is involved in the regulation of the expression of genes responsible for oxidative stress protection, regulation of mitochondrial biogenesis, and mitophagy. The p62 protein is a multifunctional cytoplasmic protein that functions as a selective mitophagy receptor for the degradation of ubiquitinated substrates. There is evidence that p62 can positively regulate Nrf2 by binding to its negative regulator, Keap1. However, there is also strong evidence that Nrf2 up-regulates p62 expression. Thereby, a regulatory loop is formed between two important signaling pathways, which may be an important target for drugs aimed at treating neurodegeneration. Constitutive activation of p62 in parallel with Nrf2 would most likely result in the activation of mTORC1-mediated signaling pathways that are associated with the development of malignant neoplasms. The purpose of this review is to describe the p62-Nrf2-p62 regulatory loop and to evaluate its role in the regulation of mitophagy under various physiological conditions.
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Affiliation(s)
- Artem P. Gureev
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (I.S.S.); (V.N.P.)
- Correspondence:
| | - Irina S. Sadovnikova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (I.S.S.); (V.N.P.)
| | | | - Anatoly A. Starkov
- Neuroscience Department, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA;
| | - Vasily N. Popov
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (I.S.S.); (V.N.P.)
- Voronezh State University of Engineering Technologies, 394018 Voronezh, Russia
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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: 31] [Impact Index Per Article: 7.8] [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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Calabrese EJ, Kozumbo WJ. The phytoprotective agent sulforaphane prevents inflammatory degenerative diseases and age-related pathologies via Nrf2-mediated hormesis. Pharmacol Res 2020; 163:105283. [PMID: 33160067 DOI: 10.1016/j.phrs.2020.105283] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 12/17/2022]
Abstract
In numerous experimental models, sulforaphane (SFN) is shown herein to induce hormetic dose responses that are not only common but display endpoints of biomedical and clinical relevance. These hormetic responses are mediated via the activation of nuclear factor erythroid- derived 2 (Nrf2) antioxidant response elements (AREs) and, as such, are characteristically biphasic, well integrated, concentration/dose dependent, and specific with regard to the targeted cell type and the temporal profile of response. In experimental disease models, the SFN-induced hormetic activation of Nrf2 was shown to effectively reduce the occurrence and severity of a wide range of human-related pathologies, including Parkinson's disease, Alzheimer's disease, stroke, age-related ocular damage, chemically induced brain damage, and renal nephropathy, amongst others, while also enhancing stem cell proliferation. Although SFN was broadly chemoprotective within an hormetic dose-response context, it also enhanced cell proliferation/cell viability at low concentrations in multiple tumor cell lines. Although the implications of the findings in tumor cells are largely uncertain at this time and warrant further consideration, the potential utility of SFN in cancer treatment has not been precluded. This assessment of SFN complements recent reports of similar hormesis-based chemoprotections by other widely used dietary supplements, such as curcumin, ginkgo biloba, ginseng, green tea, and resveratrol. Interestingly, the mechanistic profile of SFN is similar to that of numerous other hormetic agents, indicating that activation of the Nrf2/ARE pathway is probably a central, integrative, and underlying mechanism of hormesis itself. The Nrf2/ARE pathway provides an explanation for how large numbers of agents that both display hormetic dose responses and activate Nrf2 can function to limit age-related damage, the progression of numerous disease processes, and chemical- and radiation- induced toxicities. These findings extend the generality of the hormetic dose response to include SFN and many other chemical activators of Nrf2 that are cited in the biomedical literature and therefore have potentially important public health and clinical implications.
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Affiliation(s)
- Edward J Calabrese
- Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, United States.
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Limanaqi F, Biagioni F, Mastroiacovo F, Polzella M, Lazzeri G, Fornai F. Merging the Multi-Target Effects of Phytochemicals in Neurodegeneration: From Oxidative Stress to Protein Aggregation and Inflammation. Antioxidants (Basel) 2020; 9:antiox9101022. [PMID: 33092300 PMCID: PMC7589770 DOI: 10.3390/antiox9101022] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/14/2020] [Accepted: 10/16/2020] [Indexed: 02/08/2023] Open
Abstract
Wide experimental evidence has been provided in the last decade concerning the neuroprotective effects of phytochemicals in a variety of neurodegenerative disorders. Generally, the neuroprotective effects of bioactive compounds belonging to different phytochemical classes are attributed to antioxidant, anti-aggregation, and anti-inflammatory activity along with the restoration of mitochondrial homeostasis and targeting alterations of cell-clearing systems. Far from being independent, these multi-target effects represent interconnected events that are commonly implicated in the pathogenesis of most neurodegenerative diseases, independently of etiology, nosography, and the specific misfolded proteins being involved. Nonetheless, the increasing amount of data applying to a variety of neurodegenerative disorders joined with the multiple effects exerted by the wide variety of plant-derived neuroprotective agents may rather confound the reader. The present review is an attempt to provide a general guideline about the most relevant mechanisms through which naturally occurring agents may counteract neurodegeneration. With such an aim, we focus on some popular phytochemical classes and bioactive compounds as representative examples to design a sort of main highway aimed at deciphering the most relevant protective mechanisms which make phytochemicals potentially useful in counteracting neurodegeneration. In this frame, we emphasize the potential role of the cell-clearing machinery as a kernel in the antioxidant, anti-aggregation, anti-inflammatory, and mitochondrial protecting effects of phytochemicals.
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Affiliation(s)
- Fiona Limanaqi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
| | - Francesca Biagioni
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (F.M.)
| | - Federica Mastroiacovo
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (F.M.)
| | - Maico Polzella
- Aliveda Laboratories, Viale Karol Wojtyla 19, 56042 Crespina Lorenzana, Italy;
| | - Gloria Lazzeri
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
- Correspondence: (G.L.); (F.F.)
| | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (F.M.)
- Correspondence: (G.L.); (F.F.)
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Zhou F, He K, Guan Y, Yang X, Chen Y, Sun M, Qiu X, Yan F, Huang H, Yao L, Liu B, Huang L. Network pharmacology-based strategy to investigate pharmacological mechanisms of Tinospora sinensis for treatment of Alzheimer's disease. JOURNAL OF ETHNOPHARMACOLOGY 2020; 259:112940. [PMID: 32389853 DOI: 10.1016/j.jep.2020.112940] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tinospora sinensis (Lour.) Merr. belongs to the family Menispermaceae. It is called LeZhe and is widely used as a kind of folk medicine especially in the Tibetan Plateau of China. T. sinensis has the functions of clearing away heat and detoxification, dispelling wind and dredging collaterals, calming and soothing the nerves. T. sinensis is an effective medicine for the prevention and treatment of aging diseases such as Alzheimer's disease (AD) in the Tibetan Plateau of China, whereas its material basis and underlying mechanisms are not clear. The aim of this study was to investigate the material basis and potential mechanisms of T. sinensis in the treatment of AD by using network pharmacology and molecular docking. MATERIALS AND METHODS In this study, targets were collected from DrugBank database, Therapeutic Target Database (TTD) and literatures reports for the treatment of AD. Compounds were searched by literatures and systematic separation from T. sinensis. The molecular docking experiment was carried out by using Autodock Vina software to screen the bioactive compounds in T. sinensis and target proteins for AD. Then, the "compound-target network" was constructed by Cytoscape software. The drug-like properties of the active compounds were analyzed by pKCSM performs, and the protein-protein interaction (PPI) network was constructed by Search Tool for the Retrieval of Interacting Genes/Proteins (STRING). The Kyoto Encyclopedia of Genes and Genomes (KEGG) target pathway enrichment analysis was carried out by Database for Annotation, Visualization and Integrated Discovery (DAVID). Furthermore, the protective effect of neurons of two active compounds were verified with the injury cell model of PC12 and primary hippocampus neurons induced by Aβ25-35. Finally, the key proteins of related pathways were quantitatively analyzed with Western blot method. RESULTS In total, 105 compounds and 38 targets have been screened. The main active compounds contained berberine, which belongs to alkaloids, Aurantiamide acetate, N-P-coumaroyltyramine, which belongs to amides, Trans-syringin and 3-demethyl-phillyrin, which belongs to phenylpropanoids. The targets covered inflammation-related proteins, including Protein kinase B (AKT), Phosphoinositide 3-kinase (PI3K), Tyrosine-protein kinase JAK1 (JAK1), mammalian target of rapamycin (mTOR), tumor necrosis factor alpha (TNF-α), Neuronal NOS (NOS1), and cholinergic function-related proteins, including α4-Nicotinic acetylcholine receptor (α4 nAChR), Muscarinic acetylcholine receptor M1 (Muscarnic M1). Inflammation and cholinergic dysfunction were the center of the network and occupy a dominant position. And the results of enrichment analysis shown the pathways mainly contained phosphoinositide-3-kinase/Akt (PI3K/Akt) signal pathway, neurotrophic factors (NTFs) signal pathway, Hypoxia-inducible factor 1 (HIF-1) signal pathway, mechanistic Target of Rapamycin (mTOR) signal pathway, Tumor necrosis factor (TNF) signal pathway, insulin resistance (IR). The results of in vitro assays showed that the tested compounds could significantly improve the survival rate and inhibit the apoptosis of PC12 cells and primary hippocampal neurons injured by Aβ25-35. Western blot results showed that T. sinensis had a significant effect on the expression of protein PI3K and Akt. CONCLUSION Our results revealed that T. sinensis could prevent and treat AD through a multi-compound-multi-target-multi-pathway regulatory network. Our work also expected to provide new ideas and theoretical bases for searching for the active compounds in T. sinensis and potential mechanism in the prevention and treatment of AD by the network pharmacology and molecular docking. The results of in vitro assay and in vivo assay supported the results of molecular docking.
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Affiliation(s)
- Feng Zhou
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Kun He
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Yang Guan
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Xiyang Yang
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Yaohui Chen
- Jiang Xi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, Jiangxi, 330006, PR China
| | - Mengsheng Sun
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Xiaopeng Qiu
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Feixia Yan
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, PR China
| | - Lihua Yao
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, 330013, PR China
| | - Bo Liu
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China.
| | - Liping Huang
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, PR China.
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Tu Y, Wang K, Tan L, Han B, Hu Y, Ding H, He C. Dolichosin A, a coumestan isolated from Glycine tabacina, inhibits IL-1β-induced inflammation in SW982 human synovial cells and suppresses RANKL-induced osteoclastogenesis: From network pharmacology to experimental pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2020; 258:112855. [PMID: 32376366 DOI: 10.1016/j.jep.2020.112855] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/05/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Glycine tabacina (Labill.) Benth has been used as a traditional Chinese herbal medicine for the treatment of rheumatoid arthritis (RA) and joint infection. It is also one of the sources of the renowned native herbal medicine 'I-Tiao-Gung' in Taiwan. AIM OF THE STUDY This study aimed to investigate anti-arthritic effects and underlying mechanisms of dolichosin A (DoA), a coumestan compound isolated from G. tabacina, by the integration of network pharmacology and experimental pharmacology. MATERIALS AND METHODS Putative therapeutic targets and potential pharmacological mechanisms of DoA for RA treatment were predicted by network pharmacology approach. The regulated network of DoA acting on RA was constructed using Cytoscape 3.7.1. Anti-arthritic effects of DoA and predicted mechanisms were further validated using IL-1β-induced SW982 human synovial cell model and RANKL-induced osteoclastogenesis model. RESULTS A regulatory network of DoA-targets-pathways-RA was successfully constructed using network pharmacology approach. In this network, 65 candidate targets of DoA related to its therapeutic effect on RA were identified and the functional enrichment analysis revealed that these candidate targets were significantly involved in 12 central signaling pathways such as PI3K/AKT pathway, MAPK pathway and osteoclast differentiation. Furthermore, we found that DoA could significantly inhibit IL-1β-induced inflammation in SW982 human synovial cells, as evidenced by the decreased levels of pro-inflammatory mediators (TNF-α, IL-6 and COX-2) and MMP-3. DoA also suppressed RANKL-induced osteoclastogenesis in vitro, as evidenced by decreased number of TRAP-positive multinucleated osteoclasts and reduced TRAP activity. Further experimental mechanism evidence confirmed the predicted results of network pharmacology that the blockade of PI3K/AKT and MAPK pathways activation was closely associated with these regulated processes of DoA. CONCLUSIONS Our results demonstrated that DoA exhibited strong anti-arthritic activity through suppressing PI3K/AKT and MAPK pathways activation in activated synovial cells and osteoclasts, suggesting its potential as a hopeful candidate for the development of novel agents for the prevention and treatment of RA.
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Affiliation(s)
- Yanbei Tu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, SAR, 999078, China
| | - Kai Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, SAR, 999078, China
| | - Lihua Tan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, SAR, 999078, China
| | - Bing Han
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, SAR, 999078, China
| | - Yuanjia Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, SAR, 999078, China
| | - Hang Ding
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, 523808, China.
| | - Chengwei He
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, SAR, 999078, China.
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Sun Y, He L, Wang T, Hua W, Qin H, Wang J, Wang L, Gu W, Li T, Li N, Liu X, Chen F, Tang L. Activation of p62-Keap1-Nrf2 Pathway Protects 6-Hydroxydopamine-Induced Ferroptosis in Dopaminergic Cells. Mol Neurobiol 2020; 57:4628-4641. [PMID: 32770451 DOI: 10.1007/s12035-020-02049-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder primarily caused by the death of dopaminergic neurons in the substantia nigra pars compacta (SNpc). However, the manner of death of dopaminergic neurons remains indistinct. Ferroptosis is a form of cell death involving in the iron-dependent accumulation of glutathione depletion and lipid peroxide. Besides, previous studies indicated that ferroptosis might be involved in the death of dopaminergic neurons. In this study, we aim to explore the protective effect of the p62-Keap1-Nrf2 pathway against 6-hydroxydopamine (6-OHDA)-induced ferroptosis in dopaminergic cells. Firstly, our results demonstrated that 6-OHDA-induced ferroptosis could be observed in vivo zebrafish and in vitro human dopaminergic cell line (SH-SY5Y cells) model. Moreover, ferroptosis induced by 6-OHDA mitigates in SH-SY5Y cells upon ferrostatin-1 (Fer, an inhibitor of ferroptosis) treatment via upregulating the protein expression of glutathione peroxidase 4 (GPX4). Then, we found that high p62/SQSTM1 (p62) expression could protect SH-SY5Y cells against ferroptosis through promoting Nrf2 nuclear transfer and upregulating the expression of the antioxidant protein heme oxygenase-1 (HO-1). Ultimately, high p62 expression activates the Nrf2/HO-1 signaling pathway through binding to Kelch-like ECH-associated protein 1 (Keap1). Collectively, the activation of the p62-Keap1-Nrf2 pathway prevents 6-OHDA-induced ferroptosis in SH-SY5Y cells, targeting this pathway in combination with a pharmacological inhibitor of ferroptosis can be a potential approach for PD therapy.
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Affiliation(s)
- Yiran Sun
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Libo He
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Taoyu Wang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Wan Hua
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Huan Qin
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Jingjin Wang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Li Wang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Wanqin Gu
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Tingting Li
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Na Li
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Xinanbei Liu
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Fang Chen
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China
| | - Lin Tang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China. .,National and Local Joint Engineering Laboratory for Energy Plant Bio-Oil Production and Application, Chengdu, 610065, Sichuan, China.
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68
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Ying S, Tan M, Feng G, Kuang Y, Chen D, Li J, Song J. Low-intensity Pulsed Ultrasound regulates alveolar bone homeostasis in experimental Periodontitis by diminishing Oxidative Stress. Am J Cancer Res 2020; 10:9789-9807. [PMID: 32863960 PMCID: PMC7449900 DOI: 10.7150/thno.42508] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 07/28/2020] [Indexed: 12/19/2022] Open
Abstract
Periodontitis is a widespread oral disease that results in the loss of alveolar bone. Low-intensity pulsed ultrasound (LIPUS), which is a new therapeutic option, promotes alveolar bone regeneration in periodontal bone injury models. This study investigated the protective effect of LIPUS on oxidative stress in periodontitis and the mechanism underlying this process. Methods: An experimental periodontitis model was induced by administering a ligature. Immunohistochemistry was performed to detect the expression levels of oxidative stress, osteogenic, and osteoclastogenic markers in vivo. Cell viability and osteogenic differentiation were analyzed using the Cell Counting Kit-8, alkaline phosphatase, and Alizarin Red staining assays. A reactive oxygen species assay kit, lipid peroxidation MDA assay kit, and western blotting were used to determine oxidative stress status in vitro. To verify the role of nuclear factor erythroid 2-related factor 2 (Nrf2), an oxidative regulator, during LIPUS treatment, the siRNA technique and Nrf2-/- mice were used. The PI3K/Akt inhibitor LY294002 was utilized to identify the effects of the PI3K-Akt/Nrf2 signaling pathway. Results: Alveolar bone resorption, which was experimentally induced by periodontitis in vivo, was alleviated by LIPUS via activation of Nrf2. Oxidative stress, induced via H2O2 treatment in vitro, inhibited cell viability and suppressed osteogenic differentiation. These effects were also alleviated by LIPUS treatment via Nrf2 activation. Nrf2 silencing blocked the antioxidant effect of LIPUS by diminishing heme oxygenase-1 expression. Nrf2-/- mice were susceptible to ligature-induced periodontitis, and the protective effect of LIPUS on alveolar bone dysfunction was weaker in these mice. Activation of Nrf2 by LIPUS was accompanied by activation of the PI3K/Akt pathway. The oxidative defense function of LIPUS was inhibited by exposure to LY294002 in vitro. Conclusions: These results demonstrated that LIPUS regulates alveolar bone homeostasis in periodontitis by attenuating oxidative stress via the regulation of PI3K-Akt/Nrf2 signaling. Thus, Nrf2 plays a pivotal role in the protective effect exerted by LIPUS against ligature-induced experimental periodontitis.
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69
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Kaufman Z, Salvador GA, Liu X, Oteiza PI. Zinc and the modulation of Nrf2 in human neuroblastoma cells. Free Radic Biol Med 2020; 155:1-9. [PMID: 32416241 DOI: 10.1016/j.freeradbiomed.2020.05.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/08/2020] [Accepted: 05/12/2020] [Indexed: 01/02/2023]
Abstract
Zinc plays a key role in the modulation of neuronal redox homeostasis. A decreased zinc availability is associated with neuronal NADPH oxidase and nitric oxide synthase activation, deregulation of redox signaling, and impaired glutathione synthesis. The present work tested the hypothesis that zinc is necessary in the neuronal defense response against dopamine (DA)-induced oxidative stress, in particular through heme oxygenase-1 (HO-1) upregulation. DA showed higher cytotoxicity when zinc availability was low. Human IMR-32 neuroblastoma cells responded to high DA concentrations (100 μM) by upregulating HO-1. This upregulation involved Nrf2 translocation to the nucleus, degradation of the Bach-1 repressor, and Nrf2-DNA binding, but it was independent of ERK1/2 activation. DA-mediated induction of HO-1 expression was dependent on the concentration of zinc in the medium. IMR-32 cells incubated in zinc deficient medium showed an impaired response to DA, with lower HO-1 mRNA and protein levels than control DA-challenged cells. This altered HO-1 upregulation was reversed by zinc supplementation. In the presence of DA, Nrf2 nuclear translocation and Bach-1 degradation were lower in zinc deficient cells. The mechanisms involved include: i) impaired Nrf2-tubulin interactions and ii) alterations in the proteasome-mediated degradation of Bach-1 secondary to a decreased ubiquitylation. Results suggest that zinc is crucial in the neuronal response to DA-induced oxidative stress in part through its role in the modulation of the Nrf2-and Bach-1-driven upregulation of HO-1 expression.
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Affiliation(s)
- Z Kaufman
- Departments of Nutrition and of Environmental Toxicology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - G A Salvador
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Biología Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - X Liu
- Departments of Nutrition and of Environmental Toxicology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - P I Oteiza
- Departments of Nutrition and of Environmental Toxicology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA.
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Kozioł E, Skalicka-Woźniak K, Michalak A, Kaszubska K, Budzyńska B. Xanthotoxin reverses Parkinson's disease-like symptoms in zebrafish larvae and mice models: a comparative study. Pharmacol Rep 2020; 73:122-129. [PMID: 32700246 PMCID: PMC7862530 DOI: 10.1007/s43440-020-00136-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/03/2020] [Accepted: 07/13/2020] [Indexed: 12/18/2022]
Abstract
Background The aim of this study is to preliminary evaluate the antiparkinsonian activity of furanocoumarin—xanthotoxin, in two behavioral animal models, zebrafish larvae treated with 6-hydroxydopamine and mice treated with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine in order to compare both models. Methods Xanthotoxin was isolated from Pastinaca sativa L. (Apiaceae) fruits. Then, the compound was administered by immersion to zebrafish 5 days after fertilization (dpf) larvae or intraperitoneally to male Swiss mice, as a potential therapeutic agent against locomotor impairments. Results Acute xanthotoxin administration at the concentration of 7.5 µM reversed locomotor activity impairments in 5-dpf zebrafish larvae. In mice model, acute xanthotoxin administration alleviated movement impairments at the concentration of 25 mg/kg. Conclusions The similar activity of the same substance in two different animal models indicates their compatibility and proves the potential of in vivo bioassays based on zebrafish models. Results of our study indicate that xanthotoxin may be considered as a potential lead compound in the discovery of antiparkinsonian drugs.
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Affiliation(s)
- Ewelina Kozioł
- Independent Laboratory of Natural Products Chemistry, Department of Pharmacognosy, Medical University of Lublin, Lublin, Poland
| | - Krystyna Skalicka-Woźniak
- Independent Laboratory of Natural Products Chemistry, Department of Pharmacognosy, Medical University of Lublin, Lublin, Poland.
| | - Agnieszka Michalak
- Laboratory of Behavioral Studies, Chair and Department of Medical Chemistry, Medical University of Lublin, Lublin, Poland
| | - Katarzyna Kaszubska
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Barbara Budzyńska
- Laboratory of Behavioral Studies, Chair and Department of Medical Chemistry, Medical University of Lublin, Lublin, Poland
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Sharma V, Kaur A, Singh TG. Counteracting role of nuclear factor erythroid 2-related factor 2 pathway in Alzheimer's disease. Biomed Pharmacother 2020; 129:110373. [PMID: 32603894 DOI: 10.1016/j.biopha.2020.110373] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/01/2020] [Accepted: 06/02/2020] [Indexed: 12/30/2022] Open
Abstract
A salient pathological features in Alzheimer's disease includes redox impairment and neuroinflammation. Nuclear factor erythroid 2-related factor 2 (Nrf2) and Nuclear factor kappa B (NF-ҡB) are the two key transcription factors that regulate cellular responses to redox impairment and neuroinflammation respectively. An effective way to confer neuroprotection in central nervous system (CNS) is the activation of a transcription factor i.e Nuclear factor erythroid 2-related factor 2 (Nrf2). An enhancer element known as Antioxidant Response Element (ARE) mediates the expression of phase II detoxification enzymes. Nrf2 is a nuclear transcription factor that binds to ARE thereby transcribing expression of several antioxidant genes. Kelch ECH associating protein-1 (Keap1), a culin 3-based E3 ligase, polyubiquitinates Nrf2 and targets it for its degradation. Disruption in the interaction between Keap1/Nrf2 can increase the brain's endogenous antioxidant capacity and thereby responsible for cell defence against oxidative stress and neuroinflammation in Alzheimer's disease (AD). The current review discusses about Keap1-Nrf2-ARE structure and function with special emphasis on the various pathways involved in positive and negative modulation of Nrf2, namely Phosphoinositide 3- kinase (PI3K), Glycogen synthase kinase-3β (GSK-3β), Nuclear factor kappa-b (NF-ҡb), Janus kinase/signal transducer and activator of transcription (JAK-STAT),Tumour Necrosis Factor- α (TNF-α), p38Mitogen-activated protein kinases (p38MAPK), Cyclic AMP response element binding protein (CREB) and intrinsic & extrinsic apoptotic pathway. Furthermore, this review highlights the miscellaneous Nrf2 activators as promising therapeutic agents for slowingdown the progression of AD.
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Affiliation(s)
- Veerta Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Amarjot Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
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Wang M, Suo L, Yang S, Zhang W. CircRNA 001372 Reduces Inflammation in Propofol-Induced Neuroinflammation and Neural Apoptosis through PIK3CA/Akt/NF-κB by miRNA-148b-3p. J INVEST SURG 2020; 34:1167-1177. [PMID: 32506974 DOI: 10.1080/08941939.2020.1771639] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Objectives: To investigate effects of circular RNA (circRNA) 001372 and its antagonist miRNAs-148b-3p on propofol-induced neurotoxicity and neuroinflammation in rat brain and pheochromocytoma cells.Methods: Sprague Dawley rats in propofol model group (n = 6) were intraperitoneal injected with propofol (50 mg/kg) and in sham control group (n = 6) without any treatment. Twenty-four h later, brain tissues were acquired during pentobarbital anesthesia. PC-12 cells were transfected with or without circRNA001372 mimics, circRNA001372 inhibitor, negative mimics or miRNA-148b-3p for 48 h and then treated with propofol (100 μM) for 48 h. Quantitative reverse transcription PCR and gene chips were used for detecting levels of circRNA001372, Haemotoxylin and Eosin staining for cell morphology, MTT for cell viability, flow cytometry for apoptosis, enzyme-linked immunosorbent assay for lactate dehydrogenase (LDH), interleukin-1β (IL-1β), IL-6, IL17 and IL-18, and Western blots for phosphoinositide 3-kinase (PI3K), Akt, phosphorylated Akt, and nuclear factor (NF) κB, dual-light luminescent reporter gene assay for luciferase reporter.Results: The propofol anesthesia in rats decreases levels of circRNA001372 and increases levels of cytokines including IL-1β, IL-6, IL17 and IL-18, resulting in the neurocyte damage in brain. In propofol-treated PC-12 cells, the inhibition of circRNA001372 increases apoptosis and cell damage makers, including LDH, IL-1β, IL-6, IL17, IL-18, resulting in the reduction of cell viability, which have been revised after over-expression of circRNA001372. MiRNA-148b-3p reduces circRNA001372-incresed PI3K and pAKt levels but enhances the circRNA001372-decreased NFκB level.Conclusions: CircRNA001372 suppresses propofol-induced neurotoxicity and neuroinflammation through PI3K/Akt/NF-κB signaling pathway in rat brain and neurocytes. MiRNA-148b-3p antagonizes the effects of circRNA001372.
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Affiliation(s)
- Mingyu Wang
- Department of Anesthesia, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, China
| | - Liangyuan Suo
- Department of Anesthesia, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, China
| | - Shun Yang
- Department of Anesthesia, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, China
| | - Weiqing Zhang
- Department of Anesthesia, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, China
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73
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Liu J, Zhao X, Lv Z, Guo M, Li C. Cyclophilin A mediates coelomocyte apoptosis via the NF-κB/Bcl-2 signaling pathway in Apostichopus japonicus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 107:103657. [PMID: 32089518 DOI: 10.1016/j.dci.2020.103657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
As a multifunctional protein, cyclophilin A (CypA) plays an important role in cell apoptosis. In our previous work, we found that CypA from Apostichopus japonicus (AjCypA), as a cofactor, could modulate nuclear translocation of NF-κB. However, the immune function of AjCypA is largely unknown. In the present study, we found that siRNA-mediated AjCypA knockdown in vivo significantly increased the coelomocyte apoptosis rate. In addition, the expression of B-cell lymphoma-2 (AjBcl-2, an anti-apoptosis gene) was synchronously downregulated. To better understand the connection between AjCypA and AjBcl-2 expression, we cloned the promoter of AjBcl-2 via genomic walking, which spanned 1870 bp and contained four potential binding sites of NF-κB. Dual-luciferase reporter assay revealed that the full-length sequence and all truncated fragments exhibited high transcriptional activity. Moreover, 1 μg/mL LPS exposure significantly increased the luciferase activity of P1 (-1870/+57) by 2.31-fold and 3.15-fold at 12 and 24 h, respectively. Furthermore, the four potential NF-κB binding sites and pCMV-Flag2C-AjNF-κB co-transfection assay demonstrated that NF-κB could regulate the expression of AjBcl-2 via the NF-κB binding sites of AjBcl-2 promoter. All results supported that AjCypA mediates coelomocyte apoptosis via NF-κB/AjBcl-2 signaling pathway in A. japonicus.
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Affiliation(s)
- Jiqing Liu
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, PR China
| | - Xuelin Zhao
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, PR China
| | - Zhimeng Lv
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, PR China
| | - Ming Guo
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, PR China
| | - Chenghua Li
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China.
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Cantharidin treatment inhibits hepatocellular carcinoma development by regulating the JAK2/STAT3 and PI3K/Akt pathways in an EphB4-dependent manner. Pharmacol Res 2020; 158:104868. [PMID: 32407961 DOI: 10.1016/j.phrs.2020.104868] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023]
Abstract
Hepatocellular carcinoma (HCC) is a lethal malignancy with limited treatment options. The tyrosine kinase receptor EphB4 promotes oncogenesis and tumor development and progression. Its inhibition is regarded as an effective strategy for the treatment of solid tumors. In the present study, we identified cantharidin as a novel EphB4 inhibitor for HCC treatment and evaluated the underlying molecular pharmacological mechanisms of action. We observed increased expression levels of EphB4 in HCC patients and a positive correlation between EphB4 and p-JAK2 levels in HCC patient samples. Knockdown of EphB4 using small interfering RNA decreased the expression levels of p-JAK2 and p-STAT3 in HCC cells, suggesting JAK2/STAT3 being a novel downstream signaling target of EphB4. Cell viability experiments revealed that the anti-cancer effect of cantharidin was positively correlated with EphB4 expression levels in HCC cell lines. We confirmed the potent antiproliferative activity of cantharidin on HepG2 cells with high expression of EphB4 and tumor xenograft. Molecular docking assay, immunoblotting assay and quantitative reverse transcription PCR assay indicated that cantharidin bound to EphB4, and thereby resulted in EphB4 suppression at mRNA and protein levels. Hep3B and SMMC-7721 cells were with low expression of EphB4. In EphB4-/HepG2, EphB4+/HepG2, and EphB4+/Hep3B cells, EphB4 knockdown alleviated the cantharidin-induced decrease in cell viability and colony formation ability and increase in apoptosis in HepG2 cells, while its overexpression exacerbated these effects in Hep3B cells and increased the apoptosis of HepG2 cells. In nude mouse models, cantharidin suppressed tumor growth more effectively in EphB4+/SMMC-7721 xenografts than in wild-type SMMC-7721 xenografts. Underlying mechanistic study showed that by targeting EphB4, cantharidin blocked a novel target, the downstream JAK2/STAT3 pathway, and the previously known target, the PI3K/Akt signaling, resulting in intrinsic apoptosis. These results indicated that cantharidin may be a potential candidate for HCC treatment by regulating the EphB4 signaling pathway.
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75
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Chen Y, Shen J, Ma C, Cao M, Yan J, Liang J, Ke K, Cao M, Xiaosu G. Skin-derived precursor Schwann cells protect SH-SY5Y cells against 6-OHDA-induced neurotoxicity by PI3K/AKT/Bcl-2 pathway. Brain Res Bull 2020; 161:84-93. [PMID: 32360763 DOI: 10.1016/j.brainresbull.2020.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 03/22/2020] [Accepted: 03/31/2020] [Indexed: 02/08/2023]
Abstract
Skin-derived precursors (SKPs) are self-renewing and pluripotent adult stem cell sources that have been successfully obtained and cultured from adult tissues of rodents and humans. Skin-derived precursor Schwann cells (SKP-SCs), derived from SKPs when cultured in a neuro stromal medium supplemented with some appropriate neurotrophic factors, have been reported to play a neuroprotective effect in the peripheral nervous system. This proves our previous studies that SKP-SCs' function to bridge sciatic nerve gap in rats. However, the function of SKP-SCs in Parkinson disease (PD) remains unknown. This study was aimed to investigate the possible neuroprotective effects of SKP-SCs in 6-OHDA-induced Parkinson's disease (PD) model. Our results showed that the treatment with SKP-SCs prevented SH-SY5Y cells from 6-OHDA-induced apoptosis, accompanied by modulation of apoptosis-related proteins (Bcl-2 and Bax) and the decreased expression of active caspase-3. Furthermore, we confirmed that SKP-SCs might exert protective effects and increase the mitochondrial membrane potential (MMP) through PI3K/AKT/Bcl-2 pathway. Taken together, our results demonstrated that SKP-SCs protect against 6-OHDA-induced cytotoxicity through PI3K/AKT/Bcl-2 pathway in PD model in vitro, which provides a new theoretical basis for the treatment of PD.
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Affiliation(s)
- Ying Chen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jiabing Shen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Chengxiao Ma
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Maosheng Cao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jianan Yan
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jingjing Liang
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Kaifu Ke
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Maohong Cao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China.
| | - Gu Xiaosu
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China.
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76
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Song D, Hao J, Fan D. Biological properties and clinical applications of berberine. Front Med 2020; 14:564-582. [DOI: 10.1007/s11684-019-0724-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 10/12/2019] [Indexed: 02/06/2023]
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77
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Singh AK, Singh SK, Nandi MK, Mishra G, Maurya A, Rai A, Rai GK, Awasthi R, Sharma B, Kulkarni GT. Berberine: A Plant-derived Alkaloid with Therapeutic Potential to Combat Alzheimer's disease. Cent Nerv Syst Agents Med Chem 2020; 19:154-170. [PMID: 31429696 DOI: 10.2174/1871524919666190820160053] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/29/2019] [Accepted: 08/06/2019] [Indexed: 12/20/2022]
Abstract
Berberine (a protoberberine isoquinoline alkaloid) has shown promising pharmacological activities, including analgesic, anti-inflammatory, anticancer, antidiabetic, anti-hyperlipidemic, cardioprotective, memory enhancement, antidepressant, antioxidant, anti-nociceptive, antimicrobial, anti- HIV and cholesterol-lowering effects. It is used in the treatment of the neurodegenerative disorder. It has strong evidence to serve as a potent phytoconstituent in the treatment of various neurodegenerative disorders such as AD. It limits the extracellular amyloid plaques and intracellular neurofibrillary tangles. It has also lipid-glucose lowering ability, hence can be used as a protective agent in atherosclerosis and AD. However, more detailed investigations along with safety assessment of berberine are warranted to clarify its role in limiting various risk factors and AD-related pathologies. This review highlights the pharmacological basis to control oxidative stress, neuroinflammation and protective effect of berberine in AD, which will benefit to the biological scientists in understanding and exploring the new vistas of berberine in combating Alzheimer's disease.
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Affiliation(s)
- Anurag K Singh
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
| | - Santosh K Singh
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
| | - Manmath K Nandi
- Institute of Medical Sciences, Faculty of Ayurveda, Department of medicinal chemistry, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Gaurav Mishra
- Institute of Medical Sciences, Faculty of Ayurveda, Department of medicinal chemistry, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Anand Maurya
- Institute of Medical Sciences, Faculty of Ayurveda, Department of medicinal chemistry, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Arati Rai
- Hygia Institute of Pharmaceutical Education & Research, Lucknow-226020, Uttar Pradesh, India
| | - Gopal K Rai
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, Uttar Pradesh, India
| | - Rajendra Awasthi
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sec 125, Noida, 201303, Uttar Pradesh, India
| | - Bhupesh Sharma
- Department of Pharmacology, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sec 125, Noida, 201303, Uttar Pradesh, India
| | - Giriraj T Kulkarni
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sec 125, Noida, 201303, Uttar Pradesh, India
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Abidar S, Boiangiu RS, Dumitru G, Todirascu-Ciornea E, Amakran A, Cioanca O, Hritcu L, Nhiri M. The Aqueous Extract from Ceratonia siliqua Leaves Protects Against 6-hydroxydopamine in Zebrafish: Understanding the Underlying Mechanism. Antioxidants (Basel) 2020; 9:antiox9040304. [PMID: 32276477 PMCID: PMC7222174 DOI: 10.3390/antiox9040304] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 12/13/2022] Open
Abstract
Ceratonia siliqua L. is a Mediterranean medicinal plant traditionally cultivated for its ethnopharmacological benefits, such as antidiarrheal, antidiabetic, enhance acetylcholine, antioxidant, antiatherosclerotic, and for its possible anti-neurodegenerative potential. The aim of the present study was to evaluate the chemical composition, as well as the cognitive-enhancing, anxiolytic, and antioxidant activities of the aqueous extract from C. siliqua (CsAE) leaves against 6-hydroxydopamine (6-OHDA) zebrafish Parkinson’s disease (PD) model. CsAE (0.1, 0.3, and 1 mg/L) was administered by immersion to zebrafish (Danio rerio) for eight consecutive days and one hour before each behavioral test of each day, while 6-OHDA (250 µM) treatment was supplied one day before the novel tank diving test (NTT). Qualitative and quantitative analyses were performed by the ultra-high-performance liquid chromatography (UHPLC) analysis. The memory performance was evaluated through the NTT and Y-maze tests. Additionally, the in vitro and in vivo antioxidant status and acetylcholinesterase (AChE) activity was also assessed. Our finds demonstrated that CsAE presented positive antioxidant and anti-AChE activities, which contributed to the improvement of cognitive function in the 6-OHDA zebrafish PD model.
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Affiliation(s)
- Sara Abidar
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaadi, Tanger Principal BP 416, Morocco; (S.A.); (A.A.); (M.N.)
| | - Razvan Stefan Boiangiu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (E.T.-C.)
| | - Gabriela Dumitru
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (E.T.-C.)
- Correspondence: (G.D.); (L.H.); Tel.: +40-232-201-522 (G.D.); +40-232-201-666 (L.H.)
| | - Elena Todirascu-Ciornea
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (E.T.-C.)
| | - Amina Amakran
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaadi, Tanger Principal BP 416, Morocco; (S.A.); (A.A.); (M.N.)
| | - Oana Cioanca
- Department of Pharmacognosy, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, 16 University Street, 700115 Iasi, Romania;
| | - Lucian Hritcu
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaadi, Tanger Principal BP 416, Morocco; (S.A.); (A.A.); (M.N.)
- Correspondence: (G.D.); (L.H.); Tel.: +40-232-201-522 (G.D.); +40-232-201-666 (L.H.)
| | - Mohamed Nhiri
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaadi, Tanger Principal BP 416, Morocco; (S.A.); (A.A.); (M.N.)
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Biphasic Dose-Response Induced by Phytochemicals: Experimental Evidence. J Clin Med 2020; 9:jcm9030718. [PMID: 32155852 PMCID: PMC7141213 DOI: 10.3390/jcm9030718] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/28/2020] [Accepted: 03/03/2020] [Indexed: 01/02/2023] Open
Abstract
Many phytochemicals demonstrate nonmonotonic dose/concentration-response termed biphasic dose-response and are considered to be hormetic compounds, i.e., they induce biologically opposite effects at different doses. In numerous articles the hormetic nature of phytochemicals is declared, however, no experimental evidence is provided. Our aim was to present the overview of the reports in which phytochemical-induced biphasic dose-response is experimentally proven. Hence, we included in the current review only articles in which the reversal of response between low and high doses/concentrations of phytochemicals for a single endpoint was documented. The majority of data on biphasic dose-response have been found for phytoestrogens; other reports described these types of effects for resveratrol, sulforaphane, and natural compounds from various chemical classes such as isoquinoline alkaloid berberine, polyacetylenes falcarinol and falcarindiol, prenylated pterocarpan glyceollin1, naphthoquinones plumbagin and naphazarin, and panaxatriol saponins. The prevailing part of the studies presented in the current review was performed on cell cultures. The most common endpoint tested was a proliferation of tumor and non-cancerous cells. Very few experiments demonstrating biphasic dose-response induced by phytochemicals were carried out on animal models. Data on the biphasic dose-response of various endpoints to phytochemicals may have a potential therapeutic or preventive implication.
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80
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Du GF, Le YJ, Sun X, Yang XY, He QY. Proteomic investigation into the action mechanism of berberine against Streptococcus pyogenes. J Proteomics 2020; 215:103666. [DOI: 10.1016/j.jprot.2020.103666] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 12/16/2019] [Accepted: 01/22/2020] [Indexed: 12/12/2022]
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81
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Wen C, Huang C, Yang M, Fan C, Li Q, Zhao J, Gan D, Li A, Zhu L, Lu D. The Secretion from Bone Marrow Mesenchymal Stem Cells Pretreated with Berberine Rescues Neurons with Oxidative Damage Through Activation of the Keap1-Nrf2-HO-1 Signaling Pathway. Neurotox Res 2020; 38:59-73. [PMID: 32108297 DOI: 10.1007/s12640-020-00178-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/17/2019] [Accepted: 02/06/2020] [Indexed: 12/14/2022]
Abstract
Oxidative stress is a potential pathological mechanism of Alzheimer's disease (AD). Berberine (BBR) can improve antioxidative capacity and inhibit Aβ protein aggregation and tau protein hyperphosphorylation in AD, and stem cell therapy is also increasingly recognized as a therapy for AD. Bone marrow mesenchymal stem cells (BMSCs) have many advantages, as they exhibit antioxidant and anti-inflammatory activity and secrete a variety of neurotrophic factors, and play important roles in neurodegenerative disease treatment. In this study, we investigated the antioxidant effects of secretions from BMSCs pretreated with BBR on tert-butyl hydroperoxide (t-BHP)-damaged neurons. We demonstrated that BBR can enhance BMSC viability and the secretion of nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF), both of which are vital neurotrophic factors that maintain neuronal growth. Moreover, conditioned medium from BBR-treated BMSCs (BBR-BMSC-CM) reduced reactive oxygen species (ROS) production, attenuated a decrease in the mitochondrial membrane potential, and ameliorated neuronal apoptosis by decreasing levels of the apoptotic proteins Bax/Bcl-2, cytochrome c, and cleaved caspase-3/caspase-3. In addition, increased synaptophysin (SYP) and postsynaptic density protein 95 (PSD95) levels indicated that neuronal synaptic function was restored. Further study revealed that BBR-BMSC-CM activated the antioxidant proteins Keap1, Nrf2, and HO-1. In conclusion, our results showed that BBR-BMSC-CM attenuated apoptosis and oxidative damage in neurons by activating the Keap1-Nrf2-HO-1 signaling pathway. Taken together, these results also suggest BBR as a drug to stimulate the secretion of nutritional cytokines with the potential to treat AD.
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Affiliation(s)
- Caiyan Wen
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Cuiqin Huang
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Mei Yang
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Chongzhu Fan
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Qin Li
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Jiayi Zhao
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Danhui Gan
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - An Li
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Lihong Zhu
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Daxiang Lu
- Department of Pathophysiology, Institute of Brain Science Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, 510632, Guangdong, China.
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Ding C, Zou Q, Wu Y, Lu J, Qian C, Li H, Huang B. EGF released from human placental mesenchymal stem cells improves premature ovarian insufficiency via NRF2/HO-1 activation. Aging (Albany NY) 2020; 12:2992-3009. [PMID: 32040445 PMCID: PMC7041770 DOI: 10.18632/aging.102794] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/12/2020] [Indexed: 04/12/2023]
Abstract
Human placental mesenchymal stem cells (hPMSCs) have the ability to release cytokines and to differentiate into the three germ layers. To date, the relevance of hPMSCs for the treatment of premature ovarian insufficiency (POI) disease through the regulation of oxidative stress is still unclear. Therefore, to evaluate the therapeutic efficiency and investigate the mechanism of hPMSCs, we generated a mouse model of POI and collected human ovarian granule cells (hGCs) from patients with POI. hPMSCs displayed therapeutic effects on POI ovarian function, including recovered follicular numbers and increased expression of oocyte markers. Furthermore, secretion of the cytokine EGF (epidermal growth factor) was higher from hPMSCs than it was from other cells. FACS and Western blot analyses showed that EGF elevated the proliferation and reduced the apoptosis in hGCs. hPMSCs and EGF inhibited oxidative stress levels. Protein assays demonstrated that EGF suppressed oxidative stress by dose-dependently upregulating the expression of the NRF2/HO-1 pathway, and it inhibited the apoptosis by regulating the PTEN/PI3K/AKT pathway. These findings provide an experimental foundation for hPMSCs in improving ovarian function through the secretion of EGF. The mechanism of action of EGF is related to protection from oxidative stress by activation of the NRF2/HO-1.
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Affiliation(s)
- Chenyue Ding
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Qinyan Zou
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Yifei Wu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Jiangsu 210029, China
| | - Jiafeng Lu
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Chunfeng Qian
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Jiangsu 210029, China
| | - Hong Li
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Boxian Huang
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Jiangsu 210029, China
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83
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Zhu X, Wei Y, Yang B, Yin X, Guo X. The mitohormetic response as part of the cytoprotection mechanism of berberine : Berberine induces mitohormesis and mechanisms. Mol Med 2020; 26:10. [PMID: 31973689 PMCID: PMC6979287 DOI: 10.1186/s10020-020-0136-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/09/2020] [Indexed: 02/07/2023] Open
Abstract
It was well-known that Berberine, a major bioactive compound extracted from natural plants Coptis chinensis, has anti-diabetic effects for decades in china. Other types of pharmacological activities, such as anti-inflammatory, antimicrobial, hypolipidemic, and anti-cancer effects, have also been examined. At cellular level, these pharmacological activities were mostly an inhibitory effect. However, the cytoprotective effect of berberine was also observed in various types of cells, such as neurons, endothelial cells, fibroblasts, and β-cells. The paradoxical result may be closely associated with characteristics and distribution of berberine within cells, and they can be explained mechanically by mitohormesis, one particular form of hormesis. Here, we reviewed the mitohormetic response and assessed the berberine-induced effects and the possible signaling pathway involved. These findings may contribute to better clinical applications of berberine and indicate that some mitochondria-targeted conventional drugs should be considered carefully in clinical application.
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Affiliation(s)
- Xiaofei Zhu
- Department of Clinical Immunology, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China. .,Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China. .,Henan Key Laboratory of Immunology and Targeted Drugs, Xinxiang Medical University, Xinxiang, 453003, China.
| | - Yihui Wei
- Department of Clinical Immunology, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China
| | - Beibei Yang
- Department of Clinical Immunology, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China
| | - Xiaoxiao Yin
- Department of Clinical Immunology, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China
| | - Xiaofang Guo
- Department of Microbiology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
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84
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Anti-Inflammation Associated Protective Mechanism of Berberine and its Derivatives on Attenuating Pentylenetetrazole-Induced Seizures in Zebrafish. J Neuroimmune Pharmacol 2020; 15:309-325. [DOI: 10.1007/s11481-019-09902-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 12/10/2019] [Indexed: 12/13/2022]
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85
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Li Z, Jiang T, Lu Q, Xu K, He J, Xie L, Chen Z, Zheng Z, Ye L, Xu K, Zhang H, Hu A. Berberine attenuated the cytotoxicity induced by t-BHP via inhibiting oxidative stress and mitochondria dysfunction in PC-12 cells. Cell Mol Neurobiol 2019; 40:587-602. [PMID: 31828466 DOI: 10.1007/s10571-019-00756-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022]
Abstract
Neurodegenerative diseases all share several common features such as involvement of oxidative damage and mitochondrial dysfunction in pathogenesis. Oxidative stress induced by overproduction of mitochondrial reactive oxygen species (ROS) or impairment of the antioxidant deficiency results in mitochondrial dysfunction and initiation of the cell death cascade. Berberine (BBR), a traditional Chinese medicine, has been reported to exert anti-oxidative stress and anti-apoptosis effect in CNS diseases. However, the mechanism of BBR on regulating mitophagy and protecting mitochondrial function under oxidative stress remains unclear. In present study, we evaluated the beneficial effects of BBR on the tert-butyl hydroperoxide (t-BHP)-induced cytotoxicity. Furthermore, we explored the protective role of BBR in mitochondrial function and mitophagy under oxidative stress in PC-12 cells. Our results demonstrated that BBR effectively inhibited t-BHP-induced apoptosis which is associated with the decreased leakage of lactate dehydrogenase (LDH) and ROS overproduction. Moreover, BBR significantly suppressed cytochrome c expression, upregulated the ratio of Bcl-2/Bax, and ameliorated mitochondrial dysfunction by optimizing mitochondria membrane potential (ΔΨm) status and ATP production. In addition, BBR reduced the expression of autophagy-specific marker LC3, SQTM1/p62, and maintained lysosome normal function which involved the restoration of upstream signaling pathway AKT and mTOR phosphorylation level. Collectively, these findings suggested that BBR protects PC-12 cells from oxidative injury through inhibiting ROS level, mitochondria dysfunction, and mitophagy via PI3K/AKT/mTOR signaling pathways, which suggest a potential therapeutic strategy for oxidative stress and neurotoxic damages.
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Affiliation(s)
- Zhengmao Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ting Jiang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qi Lu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ke Xu
- Institute of Life Sciences, Wenzhou University, Wenzhou, Zhejiang, China
| | - Jianping He
- Department of Pharmacy, Shaoxing No. 2 Hospital, Shaoxing, Zhejiang, China
| | - Lei Xie
- Department of Orthopaedics, Shaoxing No. 2 Hospital, Shaoxing, Zhejiang, China
| | - Zaifeng Chen
- Department of Neurosurgery, Cixi People's Hospital, Wenzhou Medical Uinversity, Ninbo, Zhejiang, China
| | - Zhilong Zheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Luxia Ye
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Kebin Xu
- Department of Pharmacy, Ningbo No. 2 Hospital, Ningbo, Zhejiang, China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
| | - Aiping Hu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
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86
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Tetramethylpyrazine Analogue T-006 Exerts Neuroprotective Effects against 6-Hydroxydopamine-Induced Parkinson's Disease In Vitro and In Vivo. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8169125. [PMID: 31827703 PMCID: PMC6885178 DOI: 10.1155/2019/8169125] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/17/2019] [Accepted: 07/18/2019] [Indexed: 11/25/2022]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the progressive loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc), and there is no cure for it at present. We have previously reported that the tetramethylpyrazine (TMP) derivative T-006 exhibited beneficial effects in Alzheimer's disease (AD) models. However, its effect on PD remains unclear. In the present study, we investigated the neuroprotective effects and underlying mechanisms of T-006 against 6-hydroxydopamine- (6-OHDA-) induced lesions in in vivo and in vitro PD models. Our results demonstrated that T-006 alleviated mitochondrial membrane potential loss and restored the energy metabolism and mitochondrial biogenesis that were induced by 6-OHDA in PC12 cells. In addition, animal experiments showed that administration of T-006 significantly attenuated the 6-OHDA-induced loss of tyrosine hydroxylase- (TH-) positive neurons in the SNpc, as well as dopaminergic nerve fibers in the striatum, and also increased the concentration of dopamine and its metabolites (DOPAC, HVA) in the striatum. Functional deficits were restored following T-006 treatment in 6-OHDA-lesioned mice, as demonstrated by improved motor coordination and rotational behavior. In addition, we found that the neuroprotective effects of T-006 were mediated, at least in part, by the activation of both the PKA/Akt/GSK-3β and CREB/PGC-1α/NRF-1/TFAM pathways. In summary, our findings demonstrate that T-006 could be developed as a novel neuroprotective agent for PD, and the two pathways might be promising therapeutic targets for PD.
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87
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Zhang X, Liu XD, Xian YF, Zhang F, Huang PY, Tang Y, Yuan QJ, Lin ZX. Berberine enhances survival and axonal regeneration of motoneurons following spinal root avulsion and re-implantation in rats. Free Radic Biol Med 2019; 143:454-470. [PMID: 31472247 DOI: 10.1016/j.freeradbiomed.2019.08.029] [Citation(s) in RCA: 10] [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: 06/13/2019] [Revised: 08/17/2019] [Accepted: 08/27/2019] [Indexed: 01/10/2023]
Abstract
Brachial plexus avulsion (BPA) occurs when the spinal nerve roots are pulled away from the surface of the spinal cord and disconnects neuronal cell body from its distal downstream axon, which induces massive motoneuron death, motor axon degeneration and de-innervation of targeted muscles, thereby resulting in permanent paralysis of motor functions in the upper limb. Avulsion injury triggers oxidative stress and intense local neuroinflammation at the lesioned site, leading to the death of most motoneurons. Berberine (BBR), a natural isoquinoline alkaloid derived from medicinal herbs of Berberis and Coptis species, has been reported to possess neuro-protective, anti-inflammatory and anti-oxidative effects in various animal models of central nervous system (CNS)-related disorders. In this study, we aimed to investigate the effect of BBR on motoneuron survival and axonal regeneration following spinal root avulsion plus re-implantation in rats. Our results indicated BBR significantly accelerated motor function recovery in the forelimb as revealed by the increased Terzis grooming test score, facilitated motor axon regeneration as evidenced by the elevated number of Fluoro-Gold-labeled and P75-positive regenerative motoneurons. The survival of motoneurons was notably promoted by BBR administration presented with boosted ChAT-immunopositive and neutral red-stained neurons. BBR treatment efficiently alleviated muscle atrophy, attenuated functional motor endplates loss in biceps and prevented the reduction of motor axons in the musculocutaneous nerve. Additionally, BBR treatment markedly mitigated the avulsion-induced neuroinflammation via inhibiting microglial and astroglial reactivity, up-regulated the expression of antioxidative indicator Cu/Zn SOD, and down-regulated the levels of nNOS, 3-NT, lipid peroxidation and NF-κB, as well as promoted SIRT1, PI3K and Akt activation. Collectively, BBR might be a promising therapy to assist re-implantation surgery for the treatment of BPA.
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Affiliation(s)
- Xie Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Xiao-Dong Liu
- Department of Anaesthesia and Intensive Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Yan-Fang Xian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Feng Zhang
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Peng-Yun Huang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Ying Tang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Qiu-Ju Yuan
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China.
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88
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Ashrafizadeh M, Fekri HS, Ahmadi Z, Farkhondeh T, Samarghandian S. Therapeutic and biological activities of berberine: The involvement of Nrf2 signaling pathway. J Cell Biochem 2019; 121:1575-1585. [PMID: 31609017 DOI: 10.1002/jcb.29392] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/28/2019] [Indexed: 12/20/2022]
Abstract
Since the beginning of the 21st century, studies have focused on developing drugs from naturally occurring compounds. Berberine (Brb) as a plant-derived compound is of interest. It is an isoquinone alkaloid which is derived from Berberis aristata, Berberis aquifolium and Berberis vulgaris. This plant-derived compound has a variety of pharmacological effects such as antioxidant, anti-inflammatory, antidiabetic, antidiarrheal, antitumor, antimicrobial, and anti-inflammatory. Various studies have demonstrated the therapeutic and biological activities of Brb, but there is a lack of a precise review to manifest the signaling pathway of action of Brb. The nuclear factor erythroid 2-related factor 2 (Nrf2) is a highly conserved pathway which mainly involves in preservation of redox balance. At the present review, we describe the therapeutic and biological activities of Brb as well as the relevant mechanisms specially focused on the Nrf2 signaling pathway.
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Affiliation(s)
- Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Hojjat Samareh Fekri
- Pharmaceutics Research Center, Neuropharmacology Institute, Kerman University of Medical Sciences, Kerman, Iran.,Central Research Laboratory, Deputy of Research, Kerman University of Medical Sciences, Kerman, Iran
| | - Zahra Ahmadi
- Department of Basic Science, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran
| | - Tahereh Farkhondeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Department of Basic Medical Science, Neyshabur University of Medical Sciences, Neyshabur, Iran
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89
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Han CY, Sun TT, Xv GP, Wang SS, Gu JG, Liu CY. Berberine ameliorates CCl4‑induced liver injury in rats through regulation of the Nrf2‑Keap1‑ARE and p53 signaling pathways. Mol Med Rep 2019; 20:3095-3102. [PMID: 31432116 PMCID: PMC6755230 DOI: 10.3892/mmr.2019.10551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 07/01/2019] [Indexed: 01/21/2023] Open
Abstract
Berberine (BBR) is an isoquinoline alkaloid, reported to have multiple pharmacological functions. However, its effects against CCl4‑induced oxidative damage remain poorly studied. Therefore, the present study investigated the protective action of BBR, and its antioxidant mechanisms, against CCl4‑induced liver injury in rats. A total of 48 rats were randomly arranged into six groups: Control; model; positive control (PC); BBR low‑dose (BL); BBR middle‑dose (BM); and BBR high‑dose (BH). The BL, BM and BH animals received BBR (5, 10 and 15 mg/kg by weight, respectively) orally for 7 consecutive days. Rats in the PC group were given silymarin (150 mg/kg), and the control and model groups were administered distilled water orally. At the end of the experiment, blood samples and livers were collected. To measure the liver biochemical indices, the reactive oxygen species (ROS) generation and the expression levels of related genes and protein, the following methods were used: An automatic biochemical analyzer; flow cytometry; spectrophotometry; reverse transcription‑quantitative PCR; western blotting; and hematoxylin and eosin staining. The results revealed that BBR significantly decreased the serum levels of alanine transaminase, aspartate transaminase and alkaline phosphatase, and increased those of glutathione and superoxide dismutase, but decreased malondialdehyde activity in hepatic tissue, and significantly decreased the reactive oxygen species level in hepatocytes. In hepatic tissue, the expressions of nuclear factor erythroid 2‑related factor 2 (Nrf2), kelch‑like ECH‑associated protein 1 (Keap-1), NAD(P)H quinone dehydrogenase 1 (NQO-1), heme oxygenase 1 (HO‑1), Bcl‑2 and Bcl‑xL mRNA, and HO‑1 protein were elevated, and the expression of p53 mRNA was decreased, particularly in the BH group (15 mg/kg). In conclusion, BBR exerts a protective action against CCl4‑induced acute liver injury in rats via effectively regulating the expression of Nrf2‑Keap1‑antioxidant responsive element‑related genes and proteins, and inhibiting p53 pathway‑mediated hepatocyte apoptosis.
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Affiliation(s)
- Chun-Yang Han
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, P.R. China
| | - Tao-Tao Sun
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, P.R. China
| | - Guang-Pei Xv
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, P.R. China
| | - Si-Si Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, P.R. China
| | - Jin-Gang Gu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Cui-Yan Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, P.R. China
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90
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Zhao X, Zeng Z, Gaur U, Fang J, Peng T, Li S, Zheng W. Metformin protects PC12 cells and hippocampal neurons from H 2 O 2 -induced oxidative damage through activation of AMPK pathway. J Cell Physiol 2019; 234:16619-16629. [PMID: 30784077 DOI: 10.1002/jcp.28337] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 12/20/2018] [Accepted: 02/01/2019] [Indexed: 01/24/2023]
Abstract
Metformin, a first line anti type 2 diabetes drug, has recently been shown to extend lifespan in various species, and therefore, became the first antiaging drug in clinical trial. Oxidative stress due to excess reactive oxygen species (ROS) is considered to be an important factor in aging and related disease, such as Alzheimer's disease (AD). However, the antioxidative effects of metformin and its underlying mechanisms in neuronal cells is not known. In the present study, we showed that metformin, in clinically relevant concentrations, protected neuronal PC12 cells from H2 O2 -induced cell death. Metformin significantly ameliorated cell death due to H2 O2 insult by restoring abnormal changes in nuclear morphology, intracellular ROS, lactate dehydrogenase, and mitochondrial membrane potential induced by H2 O2 . Hoechst staining assay and flow cytometry analysis revealed that metformin significantly reduced the apoptosis in PC12 cells exposed to H2 O2 . Western blot analysis further demonstrated that metformin stimulated the phosphorylation and activation of AMP-activated protein kinase (AMPK) in PC12 cells, while application of AMPK inhibitor compound C, or knockdown of the expression of AMPK by specific small interfering RNA or short hairpin RNA blocked the protective effect of metformin. Similar results were obtained in primary cultured hippocampal neurons. Taken together, these results indicated that metformin is able to protect neuronal cells from oxidative injury, at least in part, via the activation of AMPK. As metformin is comparatively cheaper with much less side effects in clinic, our findings support its potential to be a drug for prevention and treatment of aging and aging-related diseases.
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Affiliation(s)
- Xia Zhao
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Zhiwen Zeng
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Uma Gaur
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Jiankang Fang
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Tangming Peng
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China.,Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, China
| | - Shuai Li
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Wenhua Zheng
- Center of Reproduction, Development & Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau, China
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91
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Shaping the Nrf2-ARE-related pathways in Alzheimer's and Parkinson's diseases. Ageing Res Rev 2019; 54:100942. [PMID: 31415806 DOI: 10.1016/j.arr.2019.100942] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 08/02/2019] [Accepted: 08/09/2019] [Indexed: 12/20/2022]
Abstract
A failure in redox homeostasis is a common hallmark of Alzheimer's Disease (AD) and Parkinson's Disease (PD), two age-dependent neurodegenerative disorders (NDD), causing increased oxidative stress, oxidized/damaged biomolecules, altered neuronal function and consequent cell death. Activation of nuclear factor erythroid 2-related factor 2 (Nrf2), a redox-regulated transcription factor, results in upregulation of cytoprotective and antioxidant enzymes/proteins, protecting against oxidative stress. Nrf2 regulation is achieved by various proteins and pathways, at both cytoplasmatic and nuclear level; however, the elaborate network of mechanisms involved in Nrf2 regulation may restrain Nrf2 pathway normal activity. Indeed, altered Nrf2 activity is involved in aging and NDD, such as AD and PD. Therefore, understanding the diversity of Nrf2 control mechanisms and regulatory proteins is of high interest, since more effective NDD therapeutics can be identified. In this review, we first introduce Keap1-Nrf2-ARE structure, function and regulation, with a special focus on the several pathways involved in Nrf2 positive and negative modulation, namely p62, PKC, PI3K/Akt/GSK-3β, NF-kB and p38 MAPK. We then briefly describe the evidences for oxidative stress and Nrf2 pathway deregulation in different stages of NDDs. Finally, we discuss the potential of Nrf2-related pathways as potential therapeutic targets to possibly prevent or slowdown NDD progression.
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92
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Ginsenoside Re Inhibits ROS/ASK-1 Dependent Mitochondrial Apoptosis Pathway and Activation of Nrf2-Antioxidant Response in Beta-Amyloid-Challenged SH-SY5Y Cells. Molecules 2019; 24:molecules24152687. [PMID: 31344860 PMCID: PMC6696356 DOI: 10.3390/molecules24152687] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/16/2019] [Accepted: 07/18/2019] [Indexed: 12/03/2022] Open
Abstract
Accumulation of amyloid-β (Aβ), which results in the formation of senile plaques that cause oxidative damage and neuronal cell death, has been accepted as the major pathological mechanism of Alzheimer’s disease (AD). Hence, inhibition of Aβ-induced oxidative damage and neuronal cell apoptosis represents the effective strategies in combating AD. Ginsenoside Re (Re) has pharmacological effects against Aβ-induced neurotoxicity. However, its molecular mechanism remains elusive. The present study evaluated the effect of Re against Aβ-induced cytotoxicity and apoptosis in SH-SY5Y cells, and investigated the underlying mechanism. We demonstrate that Re inhibits the Aβ-triggered mitochondrial apoptotic pathway, as indicated by maintenance of mitochondrial functional, elevated Bcl-2/Bax ratio, reduced cytochrome c release, and inactivation of caspase-3/9. Re attenuated Aβ-evoked reactive oxygen species (ROS) production, apoptosis signal-regulating kinase 1 (ASK1) phosphorylation, and JNK activation. ROS-scavenging abrogated the ability of Re to alter ASK-1 activation. Simultaneously, inhibition of JNK abolished Re-induced Bax downregulation in Aβ-challenged SH-SY5Y cells. In addition, Re enhanced activation of the nuclear factor-E2-related factor 2 (Nrf2) in Aβ-induced SH-SY5Y cells. Knockdown of Nrf2 by small interfering RNA targeting Nrf2 abolished the protective effect of Re. Our findings indicate that Re could be a potential therapeutic approach for the treatment of AD.
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93
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Zhang Y, Liu J, Lv Y, Zhang C, Guo S. LncRNA meg3 suppresses hepatocellular carcinoma in vitro and vivo studies. Am J Transl Res 2019; 11:4089-4099. [PMID: 31396320 PMCID: PMC6684911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 06/09/2019] [Indexed: 06/10/2023]
Abstract
Although abnormal expression of the long non-coding RNA (lncRNA) MEG3 has been reported in multiple cancer types, the role of MEG3 in the pathobiology of hepatocellular carcinoma (HCC) remains unknown. This study evaluated the expression of lncRNA MEG3 and a microRNA (miRNA-10a-5p) implicated in HCC metastasis in cancer and carcinoma adjacent tissues of HCC samples (n=30 each) via in situ hybridization and quantitative RT-PCR. The effects of overexpressing either MEG3 alone, or MEG3 in combination with miRNA-10a-5p, on the proliferation, apoptosis, cell cycle progression, migration, and invasion of HepG2 cells were evaluated using functional assays. Dual luciferase reporter assays and western blotting were employed to delineate the mechanisms of MEG3 and miRNA-10a-5p regulation of key oncogenes and tumor suppressors in HCC cells. Compared to carcinoma-adjacent regions, MEG3 expression was downregulated in cancer regions of HCC samples; by contrast, miRNA-10a-5p was overexpressed in cancer regions compared to tumor-adjacent areas. Furthermore, overexpression of MEG3 (a) decreased proliferation, migration, and invasion of HepG2 cells; (b) enhanced apoptosis and the proportion of HepG2 cells in G1 of the cell cycle; (c) increased the expression of phosphatase and tensin homolog (PTEN), Bcl2-associated X (Bax), and p53 proteins; and (d) decreased the expression of miRNA-10a-5p, AKT, p-AKT, Bcl-2, and the matrix metalloproteinases (MMPs)-2 and -9. Furthermore, miRNA-10a-5p bound the 3-untranslated region of PTEN mRNA and downregulated PTEN protein expression. Taken together, these data suggest that MEG3 regulates the PTEN/AKT/MMP-2/MMP-9 signaling axis and contributes to HCC development by targeting miRNA-10a-5p.
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Affiliation(s)
- Yingying Zhang
- Department of Hand and Foot Surgery, Linyi Central HospitalLinyi 276400, Shandong, China
| | - Jinfeng Liu
- Department of Oncology, Rizhao Hospital of Traditional Chinese MedicineRizhao 276800, Shandong, China
| | - Yan Lv
- Department of Internal Medicine (4), Shandong Provincial Chest HospitalJinan 250013, Shandong, China
| | - Chao Zhang
- Department of Gastroenterology and Hepatobiliary Discipline, Rizhao Hospital of Traditional Chinese MedicineRizhao 276800, Shandong, China
| | - Shuai Guo
- Department of Oncology, Shandong Provincial Chest HospitalJinan 250013, Shandong, China
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Belanova A, Beseda D, Chmykhalo V, Stepanova A, Belousova M, Khrenkova V, Gavalas N, Zolotukhin P. Berberine Effects on NFκB, HIF1A and NFE2L2/AP-1 Pathways in HeLa Cells. Anticancer Agents Med Chem 2019; 19:487-501. [DOI: 10.2174/1871520619666181211121405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 11/19/2018] [Accepted: 11/28/2018] [Indexed: 12/17/2022]
Abstract
Background:
Berberine has multitudinous anti-cancer stem cells effects making it a highly promising
candidate substance for the next-generation cancer therapy. However, berberine modes of action predispose it to
significant side-effects that probably limit its clinical testing and application.
Materials and Methods:
HeLa cells were treated with two concentrations of berberine (30 and 100 µM) for 24
hours to assess the functioning of the NFE2L2/AP-1, NFκB and HIF1A pathways using 22 RNAs expression
qPCR-based analysis.
Results:
Berberine effects appeared to be highly dose-dependent, with the lower concentration being capable of
suppressing the NFκB functioning and the higher concentration causing severe signaling side-effects seen in the
HIF1A pathway and the NFE2L2 sub-pathways, and especially and more importantly in the AP-1 sub-pathway.
Conclusion:
The results of the study suggest that berberine has clinically valuable anti-NFκB effects however
jeopardized by its side effects on the HIF1A and especially NFE2L2/AP-1 pathways, its therapeutic window
phenomenon and its cancer type-specificity. These, however, may be ameliorated using the cocktail approach,
provided there is enough data on signaling effects of berberine.
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Affiliation(s)
- Anna Belanova
- Biomedical Innovations LLC, 112 Mechnikova st., 344013, Rostov-on-Don, Russian Federation
| | - Darya Beseda
- Biomedical Innovations LLC, 112 Mechnikova st., 344013, Rostov-on-Don, Russian Federation
| | - Victor Chmykhalo
- Biomedical Innovations LLC, 112 Mechnikova st., 344013, Rostov-on-Don, Russian Federation
| | - Alisa Stepanova
- Biomedical Innovations LLC, 112 Mechnikova st., 344013, Rostov-on-Don, Russian Federation
| | - Mariya Belousova
- English Language Department for Natural Sciences Faculties, Southern Federal University, 5 Sorge st., 344090, Rostov-on-Don, Russian Federation
| | - Vera Khrenkova
- Rostov State Medical University, 119 Suvorova st., 344022, Rostov-on-Don, Russian Federation
| | - Nikolaos Gavalas
- Division of Clinical Therapeutics, National and Kapodistrian University of Athens, 80 Vas. Sofias Av., 11521, Athens, Greece
| | - Peter Zolotukhin
- Biomedical Innovations LLC, 112 Mechnikova st., 344013, Rostov-on-Don, Russian Federation
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95
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In Vitro and In Vivo Neuroprotective Effects of Stellettin B Through Anti-Apoptosis and the Nrf2/HO-1 Pathway. Mar Drugs 2019; 17:md17060315. [PMID: 31146323 PMCID: PMC6627894 DOI: 10.3390/md17060315] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/19/2019] [Accepted: 05/24/2019] [Indexed: 12/21/2022] Open
Abstract
Pharmaceutical agents for halting the progression of Parkinson’s disease (PD) are lacking. The current available medications only relieve clinical symptoms and may cause severe side effects. Therefore, there is an urgent need for novel drug candidates for PD. In this study, we demonstrated the neuroprotective activity of stellettin B (SB), a compound isolated from marine sponges. We showed that SB could significantly protect SH-SY5Y cells against 6-OHDA-induced cellular damage by inhibiting cell apoptosis and oxidative stress through PI3K/Akt, MAPK, caspase cascade modulation and Nrf2/HO-1 cascade modulation, respectively. In addition, an in vivo study showed that SB reversed 6-OHDA-induced a locomotor deficit in a zebrafish model of PD. The potential for developing SB as a candidate drug for PD treatment is discussed.
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96
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Luo R, Liao Z, Song Y, Yin H, Zhan S, Li G, Ma L, Lu S, Wang K, Li S, Zhang Y, Yang C. Berberine ameliorates oxidative stress-induced apoptosis by modulating ER stress and autophagy in human nucleus pulposus cells. Life Sci 2019; 228:85-97. [PMID: 31047897 DOI: 10.1016/j.lfs.2019.04.064] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 04/15/2019] [Accepted: 04/29/2019] [Indexed: 02/06/2023]
Abstract
AIM Nucleus pulposus (NP) cell apoptosis induced by oxidative stress is known to be closely involved in the pathogenesis of intervertebral disc (IVD) degeneration. Berberine, a small molecule derived from Rhizoma coptidis, has been found to exert antioxidative activity and preserve cell viability. The present study aims to investigate whether berberine can prevent NP cell apoptosis under oxidative damage and the potential underlying mechanisms. METHODS AND MATERIALS The effects of berberine on IVD degeneration were investigated both in vitro and in vivo. KEY FINDINGS Our results showed that berberine significantly mitigated oxidative stress-decreased cell viability as well as apoptosis in human NP cells. Berberine treatment could attenuate oxidative stress-induced ER stress and autophagy in a concentration-dependent manner. With 4-PBA (ER stress specific inhibitor) and 3-MA (autophagy specific inhibitor) administration, we demonstrated that berberine inhibited oxidative stress-induced apoptosis by modulating the ER stress and autophagy pathway. We also found that the IRE1/JNK pathway was involved in the induction of ER stress-dependent autophagy. With Ca2+ chelator BAPTA-AM utilization, we revealed that oxidative stress-mediated ER stress and autophagy repressed by berberine could be restored by inducing intracellular Ca2+ dysregulation. Furthermore, in vivo study provided evidence that berberine treatment could retard the process of puncture-induced IVD degeneration in a rat model. SIGNIFICANCE Our results indicate that berberine could prevent oxidative stress-induced apoptosis by modulating ER stress and autophagy, thus offering a novel potential pharmacological treatment strategy for IVD degeneration.
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Affiliation(s)
- Rongjin Luo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhiwei Liao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yu Song
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Huipeng Yin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shengfeng Zhan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Gaocai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Liang Ma
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Saideng Lu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kun Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shuai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yukun Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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97
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Abstract
Mild environmental stress might have beneficial effects in aging by activating maintenance and repair processes in cells and organs. These beneficial stress effects fit to the concept of hormesis. Prominent stressors acting in a hormetic way are physical exercises, fasting, cold and heat. This review will introduce some toxins, which have been found to induce hormetic responses in animal models of aging research. To highlight the molecular signature of these hormetic effects we will depict signaling pathways affected by low doses of toxins on cellular and organismic level. As prominent examples for signaling pathways involved in both aging processes as well as toxin responses, PI3K/Akt/mTOR- and AMPK-signal transduction will be described in more detail. Due to the striking overlap of signaling pathways mediating toxin induced responses and aging processes we propose considering the ability of low doses of toxins to slow down the rate of aging.
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98
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Zhang C, Li C, Jia X, Wang K, Tu Y, Wang R, Liu K, Lu T, He C. In Vitro and In Vivo Anti-Inflammatory Effects of Polyphyllin VII through Downregulating MAPK and NF-κB Pathways. Molecules 2019; 24:molecules24050875. [PMID: 30832224 PMCID: PMC6429153 DOI: 10.3390/molecules24050875] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 02/25/2019] [Accepted: 02/27/2019] [Indexed: 12/15/2022] Open
Abstract
Background: Polyphyllin VII (PP7), a steroidal saponin from Paris polyphylla, has been found to exert strong anticancer activity. Little is known about the anti-inflammatory property of PP7. In this study, the anti-inflammatory activity and its underlying mechanisms of PP7 were evaluated in lipopolysaccharide (LPS)-stimulated RAW264.7 cells and in multiple animal models. Methods: The content of nitric oxide (NO) was determined by spectrophotometry. The levels of prostaglandin E2 (PGE2) and cytokines were measured by enzyme-linked immunosorbent assay (ELISA) assay. The mRNA expression of pro-inflammatory genes was determined by qPCR. The total and phosphorylated protein levels were examined by Western blotting. The in vivo anti-inflammatory activities were evaluated by using mouse and zebrafish models. Results: PP7 reduced the production of NO and PGE2 and the protein and mRNA expressions of pro-inflammatory cytokines (TNF-α, IL-1β, and IL-6) and enzymes (inducible NO synthase [iNOS], cyclooxygenase-2 [COX-2], and Matrix metalloproteinase-9 [MMP-9]) in LPS-induced RAW264.7 cells by suppressing the NF-κB and MAPKs pathways. Notably, PP7 markedly inhibited xylene-induced ear edema and cotton pellet-induced granuloma formation in mice and suppressed LPS and CuSO4-induced inflammation and toxicity in zebrafish embryos. Conclusion: This study demonstrates that PP7 exerts strong anti-inflammatory activities in multiple in vitro and in vivo models and suggests that PP7 is a potential novel therapeutic agent for inflammatory diseases.
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Affiliation(s)
- Chao Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China.
| | - Chaoying Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun 130117, China.
| | - Xuejing Jia
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China.
| | - Kai Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China.
| | - Yanbei Tu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China.
| | - Rongchun Wang
- Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, Shandong Provincial Key Laboratory for Biosensor, Biology Institute of Shandong Academy of Sciences, Jinan 250014, China.
| | - Kechun Liu
- Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, Shandong Provincial Key Laboratory for Biosensor, Biology Institute of Shandong Academy of Sciences, Jinan 250014, China.
| | - Tao Lu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
| | - Chengwei He
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China.
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99
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Shen S, Liao Q, Feng Y, Liu J, Pan R, Lee SMY, Lin L. Myricanol mitigates lipid accumulation in 3T3-L1 adipocytes and high fat diet-fed zebrafish via activating AMP-activated protein kinase. Food Chem 2019; 270:305-314. [DOI: 10.1016/j.foodchem.2018.07.117] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 07/13/2018] [Accepted: 07/17/2018] [Indexed: 12/12/2022]
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100
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Wang S, Zhang C, Li Y, Li P, Zhang D, Li C. Anti-liver cancer effect and the mechanism of arsenic sulfide in vitro and in vivo. Cancer Chemother Pharmacol 2018; 83:519-530. [PMID: 30542770 DOI: 10.1007/s00280-018-3755-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE This study aimed at investigating the anti-tumor effect of arsenic sulfide (As2S2) against liver cancer both in vivo and in vitro and to elucidate its underlying mechanisms. METHODS Cell viability of the human hepatocellular carcinoma cell lines SMMC-7721, BEL-7402, HepG2 were measured by CCK-8 assay. The effects of As2S2 on cell proliferation and apoptosis of SMMC-7721 cells were investigated using Calcein-AM and PI staining, Hoechst 33258 staining, crystal violet staining, and JC-1 staining. Cell cycle and Annexin V/PI assay were analyzed via flow cytometry. The expression of apoptosis-related proteins, phosphorylation of PI3K and AKT were detected by Western blotting. H22-bearing mice model was established to evaluate the anti-tumor effect of As2S2 in vivo. HE staining, PCNA was observed via immunohistochemistry, and TUNEL assay was used to assess the anti-proliferation and pro-apoptotic effects of As2S2. RESULTS As2S2 significantly inhibited the growth of human hepatoma cells SMMC-7721, BEL-7402 and HepG2. As2S2 inhibited cell proliferation effectively by inducing G0/G1 cell cycle arrest in SMMC-7721 cells. As2S2 could increase Bax/Bcl-2 ratio, decrease mitochondrial membrane potential, promote the release of cytochrome c, increase the levels of cleaved caspase-3 and PARP, indicating that As2S2 induced apoptosis in SMMC-7721 cells via mitochondrial-mediated apoptosis pathway. Further research showed that As2S2 inhibited the PI3K/AKT signaling pathway leading to apoptotic cell death. In addition, As2S2 significantly inhibited tumor growth in H22-bearing mice and induced apoptosis by deactivating PI3K/AKT pathway, which was consistent with the in vitro results. CONCLUSION These findings suggested that As2S2 could induce apoptosis of liver cancer cells in vitro and in vivo, which was related to PI3K/AKT-mediated mitochondrial pathway and may provide a novel promising therapeutic agent for liver cancer treatment.
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Affiliation(s)
- Shudan Wang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Chao Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yumei Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Ping Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Dafang Zhang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.
| | - Chaoying Li
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.
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