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Mao Z, Gao M, Zhao X, Li L, Peng J. Neuroprotective Effect of Dioscin against Parkinson’s Disease via Adjusting Dual-Specificity phosphatase 6(DUSP6)-Mediated Oxidative Stress. Molecules 2022; 27:molecules27103151. [PMID: 35630630 PMCID: PMC9146847 DOI: 10.3390/molecules27103151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 12/10/2022] Open
Abstract
Exploration of lead compounds against Parkinson’s disease (PD), a neurodegenerative disease, is of great important. Dioscin, a bioactive natural product, shows various pharmacological effects. However, the activities and mechanisms of dioscin against PD have not been well investigated. In this study, the tests on 6-hydroxydopamine (6-OHDA)-induced PC12 cells and rats were carried out. The results showed that dioscin dramatically improved cell viability, decreased reactive oxygen species (ROS) levels, improved motor behavior and tyrosine hydroxylase(TH) levels and restored the levels of glutathione (GSH) and malondialdehyde (MDA) in rats. Mechanism investigation showed that dioscin not only markedly increased the expression level of dual- specificity phosphatase 6 (DUSP6) by 1.87-fold in cells and 2.56-fold in rats, and decreased phospho-extracellular regulated protein kinases (p-ERK) level by 2.12-fold in cells and 2.34-fold in rats, but also increased the levels of nuclear factor erythroid2-related factor 2 (Nrf2), hemeoxygenase-1 (HO-1), superoxide dismutase (SOD) and decreased the levels of kelch-1ike ECH-associated protein l (Keap1) in vitro and in vivo. Furthermore, DUSP6 siRNA transfection experiment in PC12 cells validated the protective effects of dioscin against PD via regulating DUSP6 to adjust the Keap1/Nrf2 pathway. Our data supported that dioscin has protection against PD in regulating oxidative stress via DUSP6 signal, which should be considered as an efficient candidate for the treatment of PD in the future.
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Affiliation(s)
- Zhang Mao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
- College of Intergrative Medicine, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Meng Gao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
| | - Xuerong Zhao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
| | - Lili Li
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Correspondence: (L.L.); or (J.P.); Tel.: +86-411-8611-0411
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Correspondence: (L.L.); or (J.P.); Tel.: +86-411-8611-0411
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Implications of Phosphoinositide 3-Kinase-Akt (PI3K-Akt) Pathway in the Pathogenesis of Alzheimer's Disease. Mol Neurobiol 2021; 59:354-385. [PMID: 34699027 DOI: 10.1007/s12035-021-02611-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/19/2021] [Indexed: 12/11/2022]
Abstract
Alzheimer's disease (AD) is the foremost type of dementia that afflicts considerable morbidity and mortality in aged population. Several transcription molecules, pathways, and molecular mechanisms such as oxidative stress, inflammation, autophagy, and immune system interact in a multifaceted way that disrupt physiological processes (cell growth, differentiation, survival, lipid and energy metabolism, endocytosis) leading to apoptosis, tauopathy, β-amyloidopathy, neuron, and synapse loss, which play an important role in AD pathophysiology. Despite of stupendous advancements in pathogenic mechanisms, treatment of AD is still a nightmare in the field of medicine. There is compelling urgency to find not only symptomatic but effective disease-modifying therapies. Recently, phosphoinositide 3-kinase (PI3K) and Akt are identified as a pathway triggered by diverse stimuli, including insulin, growth factors, cytokines, and cellular stress, that link amyloid-β, neurofibrillary tangles, and brain atrophy. The present review aims to explore and analyze the role of PI3K-Akt pathway in AD and agents which may modulate Akt and have therapeutic prospects in AD. The literature was researched using keywords "PI3K-Akt" and "Alzheimer's disease" from PubMed, Web of Science, Bentham, Science Direct, Springer Nature, Scopus, and Google Scholar databases including books. Articles published from 1992 to 2021 were prioritized and analyzed for their strengths and limitations, and most appropriate ones were selected for the purpose of review. PI3K-Akt pathway regulates various biological processes such as cell proliferation, motility, growth, survival, and metabolic functions, and inhibits many neurotoxic mechanisms. Furthermore, experimental data indicate that PI3K-Akt signaling might be an important therapeutic target in treatment of AD.
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Pereira V, Lamoine S, Cuménal M, Lolignier S, Aissouni Y, Pizzoccaro A, Prival L, Balayssac D, Eschalier A, Bourinet E, Busserolles J. Epigenetics Involvement in Oxaliplatin-Induced Potassium Channel Transcriptional Downregulation and Hypersensitivity. Mol Neurobiol 2021; 58:3575-3587. [PMID: 33772465 DOI: 10.1007/s12035-021-02361-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/15/2021] [Indexed: 01/10/2023]
Abstract
Peripheral neuropathy is the most frequent dose-limiting adverse effect of oxaliplatin. Acute pain symptoms that are induced or exacerbated by cold occur in almost all patients immediately following the first infusions. Evidence has shown that oxaliplatin causes ion channel expression modulations in dorsal root ganglia neurons, which are thought to contribute to peripheral hypersensitivity. Most dysregulated genes encode ion channels involved in cold and mechanical perception, noteworthy members of a sub-group of potassium channels of the K2P family, TREK and TRAAK. Downregulation of these K2P channels has been identified as an important tuner of acute oxaliplatin-induced hypersensitivity. We investigated the molecular mechanisms underlying this peripheral dysregulation in a murine model of neuropathic pain triggered by a single oxaliplatin administration. We found that oxaliplatin-mediated TREK-TRAAK downregulation, as well as downregulation of other K+ channels of the K2P and Kv families, involves a transcription factor known as the neuron-restrictive silencer factor (NRSF) and its epigenetic co-repressors histone deacetylases (HDACs). NRSF knockdown was able to prevent most of these K+ channel mRNA downregulation in mice dorsal root ganglion neurons as well as oxaliplatin-induced acute cold and mechanical hypersensitivity. Interestingly, pharmacological inhibition of class I HDAC reproduces the antinociceptive effects of NRSF knockdown and leads to an increased K+ channel expression in oxaliplatin-treated mice.
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Affiliation(s)
- Vanessa Pereira
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Sylvain Lamoine
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Mélissa Cuménal
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Stéphane Lolignier
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Youssef Aissouni
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Anne Pizzoccaro
- Institut de Génomique Fonctionnelle, Université de Montpellier, CNRS UMR-5203, INSERM U1091, F-34094, Montpellier, France
| | - Laetitia Prival
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - David Balayssac
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Alain Eschalier
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Emmanuel Bourinet
- Institut de Génomique Fonctionnelle, Université de Montpellier, CNRS UMR-5203, INSERM U1091, F-34094, Montpellier, France
| | - Jérôme Busserolles
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France.
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France.
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Inhibition of 2-Arachidonoylglycerol Metabolism Alleviates Neuropathology and Improves Cognitive Function in a Tau Mouse Model of Alzheimer's Disease. Mol Neurobiol 2021; 58:4122-4133. [PMID: 33939165 DOI: 10.1007/s12035-021-02400-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/21/2021] [Indexed: 10/21/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia, which affects more than 5 million individuals in the USA. Unfortunately, no effective therapies are currently available to prevent development of AD or to halt progression of the disease. It has been proposed that monoacylglycerol lipase (MAGL), the key enzyme degrading the endocannabinoid 2-arachidonoylglycerol (2-AG) in the brain, is a therapeutic target for AD based on the studies using the APP transgenic models of AD. While inhibition of 2-AG metabolism mitigates β-amyloid (Aβ) neuropathology, it is still not clear whether inactivation of MAGL alleviates tauopathies as accumulation and deposition of intracellular hyperphosphorylated tau protein are the neuropathological hallmark of AD. Here we show that JZL184, a potent MAGL inhibitor, significantly reduced proinflammatory cytokines, astrogliosis, phosphorylated GSK3β and tau, cleaved caspase-3, and phosphorylated NF-kB while it elevated PPARγ in P301S/PS19 mice, a tau mouse model of AD. Importantly, tau transgenic mice treated with JZL184 displayed improvements in spatial learning and memory retention. In addition, inactivation of MAGL ameliorates deteriorations in expression of synaptic proteins in P301S/PS19 mice. Our results provide further evidence that MAGL is a promising therapeutic target for AD.
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Wang D, Jiang X, Teng S, Zhang Y, Liu Y, Li X, Li Y. The Antidiabetic and Antinephritic Activities of Auricularia cornea (An Albino Mutant Strain) via Modulation of Oxidative Stress in the db/db Mice. Front Immunol 2019; 10:1039. [PMID: 31134090 PMCID: PMC6517500 DOI: 10.3389/fimmu.2019.01039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 04/23/2019] [Indexed: 12/04/2022] Open
Abstract
This study first systematically analyzed the constituents of an albino mutant strain of Auricularia cornea (AU). After 8 weeks of continuous treatment with metformin (Met) (0.1 g/kg) and AU (0.1 and 0.4 g/kg), db/db mice showed hypoglycemic functioning, indicated by reduced bodyweight, food intake, plasma glucose, serum levels of glycated hemoglobin A1c and glucagon, hepatic levels of phosphoenolpyruvate carboxykinase and lucose-6-phosphatasem, and increased serum levels of insulin. The effect of hypolipidemic functions were indicated by suppressed levels of total cholesterol and triglyceride, and enhanced levels of hepatic glycogen and high-density lipoprotein cholesterol. The renal protective effect of AU was confirmed by the protection in renal structures and the regulation of potential indicators of nephropathy. The anti-oxidative and anti-inflammatory effects of AU were verified by a cytokine array combined with an enzyme-linked immunosorbent assay. AU decreased the expression of protein kinase C α and β2 and phosphor-nuclear factor-κB, and enhanced the expression of catalase, nuclear respiratory factor 2 (Nrf2), manganese superoxide dismutase 2, heme oxygenase-1 and−2, heat shock protein 27 (HSP27), HSP60, and HSP70 in the kidneys of db/db mice. The results confirmed that AU's anti-diabetic and anti-nephritic effects are related to its modulation on oxidative stress.
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Affiliation(s)
- Di Wang
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China.,School of Life Sciences, Jilin University, Changchun, China
| | - Xue Jiang
- School of Life Sciences, Jilin University, Changchun, China
| | - Shanshan Teng
- School of Life Sciences, Jilin University, Changchun, China
| | - Yaqin Zhang
- School of Life Sciences, Jilin University, Changchun, China
| | - Yang Liu
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China
| | - Xiao Li
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China
| | - Yu Li
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China
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Jang J, Oh H, Nam D, Seol W, Seo MK, Park SW, Kim HG, Seo H, Son I, Ho DH. Increase in anti-apoptotic molecules, nucleolin, and heat shock protein 70, against upregulated LRRK2 kinase activity. Anim Cells Syst (Seoul) 2018; 22:273-280. [PMID: 30460108 PMCID: PMC6171436 DOI: 10.1080/19768354.2018.1518262] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/22/2018] [Accepted: 08/27/2018] [Indexed: 12/30/2022] Open
Abstract
Leucine-rich repeat kinase 2 (LRRK2) is involved in Parkinson’s disease (PD) pathology. A previous study showed that rotenone treatment induced apoptosis, mitochondrial damage, and nucleolar disruption via up-regulated LRRK2 kinase activity, and these effects were rescued by an LRRK2 kinase inhibitor. Heat-shock protein 70 (Hsp70) is an anti-oxidative stress chaperone, and overexpression of Hsp70 enhanced tolerance to rotenone. Nucleolin (NCL) is a component of the nucleolus; overexpression of NCL reduced cellular vulnerability to rotenone. Thus, we hypothesized that rotenone-induced LRRK2 activity would promote changes in neuronal Hsp70 and NCL expressions. Moreover, LRRK2 G2019S, the most prevalent LRRK2 pathogenic mutant with increased kinase activity, could induce changes in Hsp70 and NCL expression. Rotenone treatment of differentiated SH-SY5Y (dSY5Y) cells increased LRKK2 levels and kinase activity, including phospho-S935-LRRK2, phospho-S1292-LRRK2, and the phospho-moesin/moesin ratio, in a dose-dependent manner. Neuronal toxicity and the elevation of cleaved poly (ADP-ribose) polymerase, NCL, and Hsp70 were increased by rotenone. To validate the induction of NCL and Hsp70 expression in response to rotenone, cycloheximide (CHX), a protein synthesis blocker, was administered with rotenone. Post-rotenone increased NCL and Hsp70 expression was repressed by CHX; whereas, rotenone-induced kinase activity and apoptotic toxicity remained unchanged. Transient expression of G2019S in dSY5Y increased the NCL and Hsp70 levels, while administration of a kinase inhibitor diminished these changes. Similar results were observed in rat primary neurons after rotenone treatment or G2019S transfection. Brains from G2019S-transgenic mice also showed increased NCL and Hsp70 levels. Accordingly, LRRK2 kinase inhibition might prevent oxidative stress-mediated PD progression. Abbreviations: 6-OHDA: 6-hydroxydopamine; CHX: cycloheximide; dSY5Y: differentiated SH-SY5Y; g2019S tg: g2019S transgenic mouse; GSK/A-KI: GSK2578215A kinase inhibitor; HSP70: heat shock protein 70; LDH: lactose dehydrogenase; LRRK2: leucine rich-repeat kinase 2; MPTP: 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine; myc-GS LRRK2: myc-tagged g2019S LRRK2; NCL: nucleolin; PARP: poly(ADP-ribose) polymerase; PD: Parkinson’s disease; PINK1: PTEN-induced putative kinase 1; pmoesin: phosphorylated moesin at t558; ROS: reactive oxygen species
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Affiliation(s)
- Jihoon Jang
- Department of Molecular and Life Sciences, Hanyang University, Ansan-si, Republic of Korea.,InAm Neuroscience Research Center, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea
| | - Hakjin Oh
- InAm Neuroscience Research Center, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea
| | - Daleum Nam
- InAm Neuroscience Research Center, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea
| | - Wongi Seol
- InAm Neuroscience Research Center, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea
| | - Mi Kyoung Seo
- Paik Institute for Clinical Research, Inje University College of Medicine, Busan, Republic of Korea
| | - Sung Woo Park
- Paik Institute for Clinical Research, Inje University College of Medicine, Busan, Republic of Korea.,Department of Health Science and Technology, Graduate School of Inje University, Busan, Republic of Korea
| | - Hyung Gun Kim
- Department of Pharmacology, College of Medicine, Dankook University, Cheonan-si, Republic of Korea
| | - Hyemyung Seo
- Department of Molecular and Life Sciences, Hanyang University, Ansan-si, Republic of Korea
| | - Ilhong Son
- InAm Neuroscience Research Center, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea.,Department of Neurology, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea
| | - Dong Hwan Ho
- InAm Neuroscience Research Center, Sanbon Medical Center, College of Medicine, Wonkwang University, Gunpo-si, Republic of Korea
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Heat Shock Proteins in Alzheimer's Disease: Role and Targeting. Int J Mol Sci 2018; 19:ijms19092603. [PMID: 30200516 PMCID: PMC6163571 DOI: 10.3390/ijms19092603] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/28/2018] [Accepted: 08/30/2018] [Indexed: 12/12/2022] Open
Abstract
Among diseases whose cure is still far from being discovered, Alzheimer’s disease (AD) has been recognized as a crucial medical and social problem. A major issue in AD research is represented by the complexity of involved biochemical pathways, including the nature of protein misfolding, which results in the production of toxic species. Considering the involvement of (mis)folding processes in AD aetiology, targeting molecular chaperones represents a promising therapeutic perspective. This review analyses the connection between AD and molecular chaperones, with particular attention toward the most important heat shock proteins (HSPs) as representative components of the human chaperome: Hsp60, Hsp70 and Hsp90. The role of these proteins in AD is highlighted from a biological point of view. Pharmacological targeting of such HSPs with inhibitors or regulators is also discussed.
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Sun H, Jiang M, Fu X, Cai Q, Zhang J, Yin Y, Guo J, Yu L, Jiang Y, Liu Y, Feng L, Nie Z, Fang J, Jin L. Mesencephalic astrocyte-derived neurotrophic factor reduces cell apoptosis via upregulating HSP70 in SHSY-5Y cells. Transl Neurodegener 2017; 6:12. [PMID: 28536652 PMCID: PMC5439129 DOI: 10.1186/s40035-017-0082-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 05/03/2017] [Indexed: 12/17/2022] Open
Abstract
Background Mesencephalic astrocyte-derived neurotrophic factor (MANF) is a new candidate growth factor for dopaminergic neurons against endoplasmic reticulum stress (ER stress). HSP70 family, a chaperon like heat shock protein family, was proved to be involved in the MANF induced survival pathway in 6-OHDA treated SHSY-5Y cells. However, the ER stress relative transcriptome, in MANF signaling cascades is still investigated. The involvement of HSP70, a 70kd member of HSP70 family, need further to be verified. Methods The cell apoptosis was assayed by MTT, TUNEL staining and western blot of cleaved Caspase-3. The differentially expressed genes in SHSY-5Y cells under different conditions (control, 6-OHDA, 6-OHDA + MANF) were investigated by RNA-seq. Expression of HSP70 was further confirmed by real-time PCR. RNAi knockdown for HSP70 was performed to investigate the role of HSP70 in the MANF signaling pathway. Results MANF inhibits 6-OHDA-induced apoptosis in SHSY-5Y cells. Six ER stress relative genes (HSP70, GRP78, xbp-1, ATF-4, ATF-6, MAPK) were found enriched in 6-OHDA + MANF treatment group. HSP70 was the most significantly up-regulated gene under 6-OHDA + MANF treatment in SHSY-5Y cells. RNAi knockdown for HSP70 inhibits the protective effects of MANF against 6-OHDA toxicity in SHSY-5Y cells. Conclusion MANF exerts a protective role against 6-OHDA induced apoptosis in SHSY-5Y cells via up-regulating some ER stress genes, including HSP70 family members. The HSP70 expression level plays a key role in MANF-mediated survival pathway.
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Affiliation(s)
- Hui Sun
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Ming Jiang
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092 People's Republic of China.,Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Xing Fu
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Qiong Cai
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Jingxing Zhang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Yanxin Yin
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Jia Guo
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Lihua Yu
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Yun Jiang
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Yigang Liu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Liang Feng
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Zhiyu Nie
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Jianmin Fang
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092 People's Republic of China
| | - Lingjing Jin
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
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Pasban-Aliabadi H, Esmaeili-Mahani S, Abbasnejad M. Orexin-A Protects Human Neuroblastoma SH-SY5Y Cells Against 6-Hydroxydopamine-Induced Neurotoxicity: Involvement of PKC and PI3K Signaling Pathways. Rejuvenation Res 2017; 20:125-133. [PMID: 27814668 DOI: 10.1089/rej.2016.1836] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder that is characterized by progressive and selective death of dopaminergic neurons. Multifunctional neuropeptide orexin-A is involved in many biological events of the body. It has been shown that orexin-A has protective effects in neurodegenerative disease such as PD. However, its cellular mechanisms have not yet been fully clarified. Here, we investigated the intracellular signaling pathway of orexin-A neuroprotection in 6-hydroxydopamine (6-OHDA)-induced SH-SY5H cells damage as an in vitro model of PD. The cells were incubated with 150 μM 6-OHDA, and the viability was examined by 3-[4,5-dimethyl-2-thiazolyl]-2,5-diphenyl-2-tetrazolium bromide (MTT) assay. Mitochondrial membrane potential and intracellular calcium were measured by fluorescent probes. Western blotting was also used to determine cyclooxygenase type 2 (COX-2), nuclear factor erythroid 2 related factor 2 (Nrf2), and HSP70 protein levels. The data showed that 6-OHDA has decreasing effects on cell viability, Nrf2, and HSP70 protein expression and increases the level of mitochondrial membrane potential, intracellular calcium, and COX-2 protein. Orexin-A (500 pM) significantly attenuated the 6-OHDA-induced cell damage. Furthermore, Orexin-A significantly prevented the mentioned effects of 6-OHDA on SH-SY5Y cells. Orexin 1 receptor antagonist (SB3344867), PKC, and PI3-kinase (PI3K) inhibitors (chelerythrin and LY294002, respectively) could suppress the orexin-A neuroprotective effect. In contrast, blockage of PKA by a selective inhibitor (KT5720) had no effects on the orexin protection. The results suggest that orexin-A protective effects against 6-OHDA-induced neurotoxicity are performed via its receptors, PKC and PI3K signaling pathways.
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Affiliation(s)
- Hamzeh Pasban-Aliabadi
- 1 Department of Biology, Faculty of Sciences, ShahidBahonar University of Kerman , Kerman, Iran
| | - Saeed Esmaeili-Mahani
- 1 Department of Biology, Faculty of Sciences, ShahidBahonar University of Kerman , Kerman, Iran .,2 Laboratory of Molecular Neuroscience, Kerman Neuroscience Research Center (KNRC), Kerman University of Medical Sciences , Kerman, Iran
| | - Mehdi Abbasnejad
- 1 Department of Biology, Faculty of Sciences, ShahidBahonar University of Kerman , Kerman, Iran
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10
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Huang BP, Lin CS, Wang CJ, Kao SH. Upregulation of heat shock protein 70 and the differential protein expression induced by tumor necrosis factor-alpha enhances migration and inhibits apoptosis of hepatocellular carcinoma cell HepG2. Int J Med Sci 2017; 14:284-293. [PMID: 28367089 PMCID: PMC5370291 DOI: 10.7150/ijms.17861] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 01/30/2017] [Indexed: 12/17/2022] Open
Abstract
Tumor necrosis factor alpha (TNFα) plays diverse roles in liver damage and hepatocarcinogenesis with its multipotent bioactivity. However, the influence of TNFα on protein expression of hepatocellular carcinoma (HCC) is incompletely understood. Therefore, we aimed to investigate the differential protein expression of HCC in response to TNFα stimulus. We observed that HepG2 cell revealed a higher resistance to TNFα-induced apoptosis as compared to the non-tumorigenic hepatocyte THLE-2. By using a label-free quantitative proteomic analysis, we found that 520 proteins were differentially expressed in the HepG2 cells exposed to TNFα, including 211 up-regulated and 309 down-regulated proteins. We further confirmed several proteins with significant expression change (TNFα/control ratio>2.0 or <0.5) by immunoblotting using specific antibodies. We also analyzed the differential expressed proteins using Gene ontology and KEGG annotations, and the results implicated that TNFα might regulate ribosome, spliceosome, antigen processing and presentation, and energy metabolism in HepG2 cells. Moreover, we demonstrated that upregulation of heat shock protein 70 (HSP70) was involved in both the promoted migration and the inhibited apoptosis of HepG2 cells in response to TNFα. Collectively, these findings indicate that TNFα alters protein expression such as HSP70, which triggering specific molecular processes and signaling cascades that promote migration and inhibit apoptosis of HepG2 cells.
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Affiliation(s)
- Bee-Piao Huang
- Department of pathology, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan
| | - Chun-Shiang Lin
- Institute of Biochemistry, Microbiology, and Immunology, Chung Shan Medical University, Taichung City, Taiwan
| | - Chau-Jong Wang
- Institute of Biochemistry, Microbiology, and Immunology, Chung Shan Medical University, Taichung City, Taiwan.; Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City, Taiwan
| | - Shao-Hsuan Kao
- Institute of Biochemistry, Microbiology, and Immunology, Chung Shan Medical University, Taichung City, Taiwan.; Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City, Taiwan
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Chen B, Lu Y, Chen Y, Cheng J. The role of Nrf2 in oxidative stress-induced endothelial injuries. J Endocrinol 2015; 225:R83-99. [PMID: 25918130 DOI: 10.1530/joe-14-0662] [Citation(s) in RCA: 268] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/24/2015] [Indexed: 02/05/2023]
Abstract
Endothelial dysfunction is an important risk factor for cardiovascular disease, and it represents the initial step in the pathogenesis of atherosclerosis. Failure to protect against oxidative stress-induced cellular damage accounts for endothelial dysfunction in the majority of pathophysiological conditions. Numerous antioxidant pathways are involved in cellular redox homeostasis, among which the nuclear factor-E2-related factor 2 (Nrf2)/Kelch-like ECH-associated protein 1 (Keap1)-antioxidant response element (ARE) signaling pathway is perhaps the most prominent. Nrf2, a transcription factor with a high sensitivity to oxidative stress, binds to AREs in the nucleus and promotes the transcription of a wide variety of antioxidant genes. Nrf2 is located in the cytoskeleton, adjacent to Keap1. Keap1 acts as an adapter for cullin 3/ring-box 1-mediated ubiquitination and degradation of Nrf2, which decreases the activity of Nrf2 under physiological conditions. Oxidative stress causes Nrf2 to dissociate from Keap1 and to subsequently translocate into the nucleus, which results in its binding to ARE and the transcription of downstream target genes. Experimental evidence has established that Nrf2-driven free radical detoxification pathways are important endogenous homeostatic mechanisms that are associated with vasoprotection in the setting of aging, atherosclerosis, hypertension, ischemia, and cardiovascular diseases. The aim of the present review is to briefly summarize the mechanisms that regulate the Nrf2/Keap1-ARE signaling pathway and the latest advances in understanding how Nrf2 protects against oxidative stress-induced endothelial injuries. Further studies regarding the precise mechanisms by which Nrf2-regulated endothelial protection occurs are necessary for determining whether Nrf2 can serve as a therapeutic target in the treatment of cardiovascular diseases.
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Affiliation(s)
- Bo Chen
- Key Laboratory of Transplant Engineering and ImmunologyMinistry of Health, Regenerative Medicine Research Center, West China Hospital, Sichuan University, No.1, Keyuan Road 4th, Wuhou District, Chengdu, Sichuan Province 610041, People's Republic of ChinaDepartment of Human AnatomySchool of Basic Medical Sciences, Luzhou Medicine College, Luzhou, People's Republic of China Key Laboratory of Transplant Engineering and ImmunologyMinistry of Health, Regenerative Medicine Research Center, West China Hospital, Sichuan University, No.1, Keyuan Road 4th, Wuhou District, Chengdu, Sichuan Province 610041, People's Republic of ChinaDepartment of Human AnatomySchool of Basic Medical Sciences, Luzhou Medicine College, Luzhou, People's Republic of China
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and ImmunologyMinistry of Health, Regenerative Medicine Research Center, West China Hospital, Sichuan University, No.1, Keyuan Road 4th, Wuhou District, Chengdu, Sichuan Province 610041, People's Republic of ChinaDepartment of Human AnatomySchool of Basic Medical Sciences, Luzhou Medicine College, Luzhou, People's Republic of China
| | - Younan Chen
- Key Laboratory of Transplant Engineering and ImmunologyMinistry of Health, Regenerative Medicine Research Center, West China Hospital, Sichuan University, No.1, Keyuan Road 4th, Wuhou District, Chengdu, Sichuan Province 610041, People's Republic of ChinaDepartment of Human AnatomySchool of Basic Medical Sciences, Luzhou Medicine College, Luzhou, People's Republic of China
| | - Jingqiu Cheng
- Key Laboratory of Transplant Engineering and ImmunologyMinistry of Health, Regenerative Medicine Research Center, West China Hospital, Sichuan University, No.1, Keyuan Road 4th, Wuhou District, Chengdu, Sichuan Province 610041, People's Republic of ChinaDepartment of Human AnatomySchool of Basic Medical Sciences, Luzhou Medicine College, Luzhou, People's Republic of China
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