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Dangabar Shadrack A, Garba A, Samuel Ndidi U, Aminu S, Muhammad A. Isometamidium chloride alters redox status, down-regulates p53 and PARP1 genes while modulating at proteomic level in Drosophila melanogaster. Drug Chem Toxicol 2024; 47:416-426. [PMID: 36883353 DOI: 10.1080/01480545.2023.2186314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/21/2023] [Accepted: 02/26/2023] [Indexed: 03/09/2023]
Abstract
As trypanocide, several side effects have been reported in the use of Isometamidium chloride. This study was therefore, designed to evaluate its ability to induce oxidative stress and DNA damage using D. melanogaster as a model organism. The LC50 of the drug was determined by exposing the flies (1-3 days old of both genders) to six different concentrations (1 mg, 10 mg, 20 mg, 40 mg, 50 mg and 100 mg per 10 g of diet) of the drug for a period of seven days. The effect of the drug on survival (28 days), climbing behavior, redox status, oxidative DNA lesion, expression of p53 and PARP1 (Poly-ADP-Ribose Polymerase-1) genes after five days exposure of flies to 4.49 mg, 8.97 mg, 17.94 mg and 35.88 mg per 10 g diet was evaluated. The interaction of the drug in silico with p53 and PARP1 proteins was also evaluated. The result showed the LC50 of isometamidium chloride to be 35.88 mg per 10 g diet for seven days. Twenty-eight (28) days of exposure to isometamidium chloride showed a decreased percentage survival in a time and concentration-dependent manner. Isometamidium chloride significantly (p < 0.05) reduced climbing ability, total thiol level, Glutathione-S-transferase, and Catalase activity. The level of H2O2 was significantly (p < 0.05) increased. The result also showed significant (p < 0.05) reduction in the relative mRNA levels of p53 and PARP1 genes. The in silico molecular docking of isometamidium with p53 and PARP1 proteins showed high binding energy of -9.4 Kcal/mol and -9.2 Kcal/mol respectively. The results suggest that isometamidium chloride could be cytotoxic and a potential inhibitor of p53 and PARP1 proteins.
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Affiliation(s)
- Apollos Dangabar Shadrack
- Department of Food Technology and Home Economics, National Agricultural Extension Research and Liaison Services, Ahmadu Bello University, Zaria, Nigeria
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
- Africa Center of Excellence on Neglected Tropical Diseases and Forensic Biotechnology (ACENTDFB), Zaria, Nigeria
| | - Auwalu Garba
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
- Africa Center of Excellence on Neglected Tropical Diseases and Forensic Biotechnology (ACENTDFB), Zaria, Nigeria
| | - Uche Samuel Ndidi
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
- Africa Center of Excellence on Neglected Tropical Diseases and Forensic Biotechnology (ACENTDFB), Zaria, Nigeria
| | - Suleiman Aminu
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
- Africa Center of Excellence on Neglected Tropical Diseases and Forensic Biotechnology (ACENTDFB), Zaria, Nigeria
| | - Aliyu Muhammad
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
- Africa Center of Excellence on Neglected Tropical Diseases and Forensic Biotechnology (ACENTDFB), Zaria, Nigeria
- Center for Biomedical Research, Tuskegee University, Tuskegee, AL, USA
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2
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Agha MM, Aziziyan F, Uversky VN. Each big journey starts with a first step: Importance of oligomerization. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2024; 206:111-141. [PMID: 38811079 DOI: 10.1016/bs.pmbts.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Protein oligomers, widely found in nature, have significant physiological and pathological functions. They are classified into three groups based on their function and toxicity. Significant advancements are being achieved in the development of functional oligomers, with a focus on various applications and their engineering. The antimicrobial peptides oligomers play roles in death of bacterial and cancer cells. The predominant pathogenic species in neurodegenerative disorders, as shown by recent results, are amyloid oligomers, which are the main subject of this chapter. They are generated throughout the aggregation process, serving as both intermediates in the subsequent aggregation pathways and ultimate products. Some of them may possess potent cytotoxic properties and through diverse mechanisms cause cellular impairment, and ultimately, the death of cells and disease progression. Information regarding their structure, formation mechanism, and toxicity is limited due to their inherent instability and structural variability. This chapter aims to provide a concise overview of the current knowledge regarding amyloid oligomers.
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Affiliation(s)
- Mansoureh Mirza Agha
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Aziziyan
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Vladimir N Uversky
- Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Institute for Biological Instrumentation, Pushchino, Moscow, Russia; Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United Staes.
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3
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Ge X, Desert R, Magdaleno F, Han H, Song Z, Das S, Athavale D, Chen W, Barahona I, Lantvit D, Chen H, Hwang S, Nieto N. Redox-sensitive high-mobility group box-1 isoforms contribute to liver fibrosis progression and resolution in mice. J Hepatol 2024; 80:482-494. [PMID: 37989401 PMCID: PMC10923114 DOI: 10.1016/j.jhep.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 11/23/2023]
Abstract
BACKGROUND & AIMS High-mobility group box-1 (HMGB1) significantly increases and undergoes post-translational modifications (PTMs) in response to liver injury. Since oxidative stress plays a major role in liver fibrosis and induces PTMs in proteins, we hypothesized that redox-sensitive HMGB1 isoforms contribute to liver fibrosis progression and resolution. METHODS We used ESI-LC-MS (electrospray ionization-liquid chromatography-mass spectrometry) to study PTMs of HMGB1 during fibrosis progression and resolution. Conditional knockout mice were used for functional analyses. RESULTS We identified that disulfide ([O]) and sulfonated ([SO3]) HMGB1 increase during carbon tetrachloride-induced liver fibrosis progression, however, while [O] HMGB1 declines, [SO3] HMGB1 drops but remains, during fibrosis resolution. Conditional knockout of Hmgb1 revealed that production of [O] and [SO3] HMGB1 occurs mostly in hepatocytes. Co-injection of [O] HMGB1 worsens carbon tetrachloride-induced liver fibrosis more than co-injection of [H] HMGB1. Conversely, ablation of [O] Hmgb1 in hepatocytes reduces liver fibrosis. Moreover, ablation of the receptor for advanced-glycation end-products (Rage) reveals that the profibrogenic effect of [O] HMGB1 is mediated by RAGE signaling in hepatic stellate cells (HSCs). Notably, injection of [SO3] HMGB1 accelerates fibrosis resolution due to RAGE-dependent stimulation of HSC apoptosis. Importantly, gene signatures activated by redox-sensitive HMGB1 isoforms in mice, classify patients with fibrosis according to fibrosis and inflammation scores. CONCLUSION Dynamic changes in hepatocyte-derived [O] and [SO3] HMGB1 signal through RAGE-dependent mechanisms on HSCs to drive their profibrogenic phenotype and fate, contributing to progression and resolution of liver fibrosis. IMPACT AND IMPLICATIONS Since oxidative stress plays a major role in liver fibrosis and induces post-translational modifications of proteins, we hypothesized that redox-sensitive HMGB1 isoforms contribute to liver fibrosis progression and resolution. This study is significant because a rise in [H] HMGB1 could flag 'patient at risk', the presence of [O] HMGB1 could suggest 'disease in progress or active scarring', while the appearance of [SO3] HMGB1 could point at 'resolution under way'. The latter could be used as a readout for response to pharmacological intervention with anti-fibrotic agents.
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Affiliation(s)
- Xiaodong Ge
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Romain Desert
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Fernando Magdaleno
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Hui Han
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Zhuolun Song
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Sukanta Das
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Dipti Athavale
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Wei Chen
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Ines Barahona
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Daniel Lantvit
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA
| | - Hui Chen
- Mass Spectrometry Core, University of Illinois at Chicago, 835 S. Wolcott Ave., suite E12, Chicago, IL 60612, USA
| | - Sunil Hwang
- Mass Spectrometry Core, University of Illinois at Chicago, 835 S. Wolcott Ave., suite E12, Chicago, IL 60612, USA
| | - Natalia Nieto
- Department of Pathology, University of Illinois at Chicago, 840 S. Wood St, suite 130 CSN, MC 847, Chicago, IL 60612, USA; Department of Medicine, Division of Gastroenterology and Hepatology, University of Illinois at Chicago, 840 S. Wood St., suite 1020N, MC 787, Chicago, IL 60612, USA; Research & Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA.
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Chen W, Zhang K, Cui H, Li J, Yao D, Wang S, Tian X, Kou W, Huang J, Wang H, Wang J. Baicalin-2-ethoxyethyl ester alleviates gentamicin-induced acute kidney injury via NF-κB signaling pathway. Biomed Pharmacother 2024; 172:116276. [PMID: 38377733 DOI: 10.1016/j.biopha.2024.116276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 02/22/2024] Open
Abstract
Drug nephrotoxicity has high fatality rates and complications. To study this conditional, traditionally, Gentamicin (GM) is used to induce acute injury and establish a nephrotic syndrome model. Baicalin, a flavonoid derived from baicalin with potent anti-inflammatory and antioxidant activity, has been used to treat various inflammatory diseases. This study aims to investigate the process of baicalin-2-ethoxyethyl ester (BAE) synthesis and its therapeutic effect on GM-induced acute kidney injury (AKI). Briefly, baicalin was processed by various reactions to yield BAE. A GM-induced AKI model was established for in vivo evaluation of the protective effect and mechanism of BAE. The results indicated that BAE reduced serum creatinine and urea nitrogen levels and improved pathological alterations, inflammatory responses, and oxidative stress in renal tissues. Furthermore, it was revealed that BAE might exert anti-inflammatory and anti-oxidative responses during AKI via the NF-κB signaling pathway regulation. The findings imply that BAE has a protective impact on the kidneys and might serve as a potent medicine for treating renal damage.
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Affiliation(s)
- Wenhua Chen
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China
| | - Ke Zhang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China.
| | - Huanyue Cui
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China
| | - Jiacun Li
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China
| | - Dahong Yao
- School of Pharmaceutical Sciences, Shenzhen Technology University, Shenzhen 518060, China
| | - Shuyun Wang
- School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Xing Tian
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China
| | - Weibing Kou
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China
| | - Jian Huang
- Department of Medicinal Chemistry and Natural Medicine Chemistry (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China) Harbin Medical University, Harbin 150081, China; Shenzhen Honghui Biopharmaceutical Co., Ltd., Shenzhen 518000, China
| | - Hangyu Wang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China.
| | - Jinhui Wang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi, 832002, China; Department of Medicinal Chemistry and Natural Medicine Chemistry (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China) Harbin Medical University, Harbin 150081, China; Shenzhen Honghui Biopharmaceutical Co., Ltd., Shenzhen 518000, China.
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5
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Jain PR, Yates M, de Celis CR, Drineas P, Jahanshad N, Thompson P, Paschou P. Multiomic approach and Mendelian randomization analysis identify causal associations between blood biomarkers and subcortical brain structure volumes. Neuroimage 2023; 284:120466. [PMID: 37995919 DOI: 10.1016/j.neuroimage.2023.120466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/17/2023] [Accepted: 11/20/2023] [Indexed: 11/25/2023] Open
Abstract
Alterations in subcortical brain structure volumes have been found to be associated with several neurodegenerative and psychiatric disorders. At the same time, genome-wide association studies (GWAS) have identified numerous common variants associated with brain structure. In this study, we integrate these findings, aiming to identify proteins, metabolites, or microbes that have a putative causal association with subcortical brain structure volumes via a two-sample Mendelian randomization approach. This method uses genetic variants as instrument variables to identify potentially causal associations between an exposure and an outcome. The exposure data that we analyzed comprised genetic associations for 2994 plasma proteins, 237 metabolites, and 103 microbial genera. The outcome data included GWAS data for seven subcortical brain structure volumes including accumbens, amygdala, caudate, hippocampus, pallidum, putamen, and thalamus. Eleven proteins and six metabolites were found to have a significant association with subcortical structure volumes, with nine proteins and five metabolites replicated using independent exposure data. We found causal associations between accumbens volume and plasma protease c1 inhibitor as well as strong association between putamen volume and Agouti signaling protein. Among metabolites, urate had the strongest association with thalamic volume. No significant associations were detected between the microbial genera and subcortical brain structure volumes. We also observed significant enrichment for biological processes such as proteolysis, regulation of the endoplasmic reticulum apoptotic signaling pathway, and negative regulation of DNA binding. Our findings provide insights to the mechanisms through which brain volumes may be affected in the pathogenesis of neurodevelopmental and psychiatric disorders and point to potential treatment targets for disorders that are associated with subcortical brain structure volumes.
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Affiliation(s)
- Pritesh R Jain
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, United States
| | - Madison Yates
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, United States
| | - Carlos Rubin de Celis
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, United States
| | - Petros Drineas
- Department of Computer Science, Purdue University, United States
| | - Neda Jahanshad
- Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of South California, United States
| | - Paul Thompson
- Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of South California, United States
| | - Peristera Paschou
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, United States.
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Duarte-Jurado AP, Loera-Arias MDJ, Saucedo-Cardenas O, Montes de Oca-Luna R, Rodriguez-Rocha H, Garcia-Garcia A. Peroxiredoxin 5 overexpression decreases oxidative stress and dopaminergic cell death mediated by paraquat. Cells Dev 2023; 175:203860. [PMID: 37270067 DOI: 10.1016/j.cdev.2023.203860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/19/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
Peroxiredoxins (Prdxs) are thiol-dependent enzymes that scavenge peroxides. Previously, we found that Prdxs were hyperoxidized in a Parkinson's disease model induced by paraquat (PQ), which led to their inactivation, perpetuating reactive oxygen species (ROS) formation. Herein, we evaluated the redox state of the typical 2-Cys-Prx subgroup. We found that PQ induces ROS compartmentalization in different organelles, reflected by the 2-Cys-Prdx hyperoxidation pattern detected by redox eastern blotting. 2-Cys Prdxs are most vulnerable to hyperoxidation, while atypical 2-Cys Peroxiredoxin 5 (Prdx5) is resistant and is expressed in multiple organelles, such as mitochondria, peroxisomes, and cytoplasm. Therefore, we overexpressed human Prdx5 in the dopaminergic SHSY-5Y cell line using the adenoviral vector Ad-hPrdx5. Prdx5 overexpression was confirmed by western blotting and immunofluorescence (IF) and effectively decreased PQ-mediated mitochondrial and cytoplasmic ROS assessed with a mitochondrial superoxide indicator and DHE through IF or flow cytometry. Decreased ROS mediated by Prdx5 in the main subcellular compartments led to overall cell protection against PQ-induced cell death, which was demonstrated by flow cytometry using Annexin V labeling and 7-AAD. Therefore, Prdx5 is an attractive therapeutic target for PD, as its overexpression protects dopaminergic cells from ROS and death, which warrants further experimental animal studies for its subsequent application in clinical trials.
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Affiliation(s)
- Ana Patricia Duarte-Jurado
- Departamento de Histologia, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Nuevo Leon, Mexico
| | - Maria de Jesus Loera-Arias
- Departamento de Histologia, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Nuevo Leon, Mexico
| | - Odila Saucedo-Cardenas
- Departamento de Histologia, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Nuevo Leon, Mexico
| | - Roberto Montes de Oca-Luna
- Departamento de Histologia, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Nuevo Leon, Mexico
| | - Humberto Rodriguez-Rocha
- Departamento de Histologia, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Nuevo Leon, Mexico.
| | - Aracely Garcia-Garcia
- Departamento de Histologia, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Nuevo Leon, Mexico.
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7
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Martinez-Banaclocha MA. Targeting the Cysteine Redox Proteome in Parkinson's Disease: The Role of Glutathione Precursors and Beyond. Antioxidants (Basel) 2023; 12:1373. [PMID: 37507913 PMCID: PMC10376658 DOI: 10.3390/antiox12071373] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
Encouraging recent data on the molecular pathways underlying aging have identified variants and expansions of genes associated with DNA replication and repair, telomere and stem cell maintenance, regulation of the redox microenvironment, and intercellular communication. In addition, cell rejuvenation requires silencing some transcription factors and the activation of pluripotency, indicating that hidden molecular networks must integrate and synchronize all these cellular mechanisms. Therefore, in addition to gene sequence expansions and variations associated with senescence, the optimization of transcriptional regulation and protein crosstalk is essential. The protein cysteinome is crucial in cellular regulation and plays unexpected roles in the aging of complex organisms, which show cumulative somatic mutations, telomere attrition, epigenetic modifications, and oxidative dysregulation, culminating in cellular senescence. The cysteine thiol groups are highly redox-active, allowing high functional versatility as structural disulfides, redox-active disulfides, active-site nucleophiles, proton donors, and metal ligands to participate in multiple regulatory sites in proteins. Also, antioxidant systems control diverse cellular functions, including the transcription machinery, which partially depends on the catalytically active cysteines that can reduce disulfide bonds in numerous target proteins, driving their biological integration. Since we have previously proposed a fundamental role of cysteine-mediated redox deregulation in neurodegeneration, we suggest that cellular rejuvenation of the cysteine redox proteome using GSH precursors, like N-acetyl-cysteine, is an underestimated multitarget therapeutic approach that would be particularly beneficial in Parkinson's disease.
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8
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Jain P, Yates M, de Celis CR, Drineas P, Jahanshad N, Thompson P, Paschou P. Multiomic approach and Mendelian randomization analysis identify causal associations between blood biomarkers and subcortical brain structure volumes. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.03.30.23287968. [PMID: 37066330 PMCID: PMC10104218 DOI: 10.1101/2023.03.30.23287968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Alterations in subcortical brain structure volumes have been found to be associated with several neurodegenerative and psychiatric disorders. At the same time, genome-wide association studies (GWAS) have identified numerous common variants associated with brain structure. In this study, we integrate these findings, aiming to identify proteins, metabolites, or microbes that have a putative causal association with subcortical brain structure volumes via a two-sample Mendelian randomization approach. This method uses genetic variants as instrument variables to identify potentially causal associations between an exposure and an outcome. The exposure data that we analyzed comprised genetic associations for 2,994 plasma proteins, 237 metabolites, and 103 microbial genera. The outcome data included GWAS data for seven subcortical brain structure volumes including accumbens, amygdala, caudate, hippocampus, pallidum, putamen, and thalamus. Eleven proteins and six metabolites were found to have a significant association with subcortical structure volumes. We found causal associations between amygdala volume and granzyme A as well as association between accumbens volume and plasma protease c1 inhibitor. Among metabolites, urate had the strongest association with thalamic volume. No significant associations were detected between the microbial genera and subcortical brain structure volumes. We also observed significant enrichment for biological processes such as proteolysis, regulation of the endoplasmic reticulum apoptotic signaling pathway, and negative regulation of DNA binding. Our findings provide insights to the mechanisms through which brain volumes may be affected in the pathogenesis of neurodevelopmental and psychiatric disorders and point to potential treatment targets for disorders that are associated with subcortical brain structure volumes.
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Affiliation(s)
- Pritesh Jain
- Department of Biological Sciences, Purdue University
| | - Madison Yates
- Department of Biological Sciences, Purdue University
| | | | | | - Neda Jahanshad
- Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of South California
| | - Paul Thompson
- Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of South California
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9
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Bogetofte H, Ryan BJ, Jensen P, Schmidt SI, Vergoossen DLE, Barnkob MB, Kiani LN, Chughtai U, Heon-Roberts R, Caiazza MC, McGuinness W, Márquez-Gómez R, Vowles J, Bunn FS, Brandes J, Kilfeather P, Connor JP, Fernandes HJR, Caffrey TM, Meyer M, Cowley SA, Larsen MR, Wade-Martins R. Post-translational proteomics platform identifies neurite outgrowth impairments in Parkinson's disease GBA-N370S dopamine neurons. Cell Rep 2023; 42:112180. [PMID: 36870058 DOI: 10.1016/j.celrep.2023.112180] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/04/2022] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
Variants at the GBA locus, encoding glucocerebrosidase, are the strongest common genetic risk factor for Parkinson's disease (PD). To understand GBA-related disease mechanisms, we use a multi-part-enrichment proteomics and post-translational modification (PTM) workflow, identifying large numbers of dysregulated proteins and PTMs in heterozygous GBA-N370S PD patient induced pluripotent stem cell (iPSC) dopamine neurons. Alterations in glycosylation status show disturbances in the autophagy-lysosomal pathway, which concur with upstream perturbations in mammalian target of rapamycin (mTOR) activation in GBA-PD neurons. Several native and modified proteins encoded by PD-associated genes are dysregulated in GBA-PD neurons. Integrated pathway analysis reveals impaired neuritogenesis in GBA-PD neurons and identify tau as a key pathway mediator. Functional assays confirm neurite outgrowth deficits and identify impaired mitochondrial movement in GBA-PD neurons. Furthermore, pharmacological rescue of glucocerebrosidase activity in GBA-PD neurons improves the neurite outgrowth deficit. Overall, this study demonstrates the potential of PTMomics to elucidate neurodegeneration-associated pathways and potential drug targets in complex disease models.
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Affiliation(s)
- Helle Bogetofte
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK; Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense C, Denmark; Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense M, Denmark
| | - Brent J Ryan
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK.
| | - Pia Jensen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense M, Denmark
| | - Sissel I Schmidt
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK; Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense C, Denmark
| | - Dana L E Vergoossen
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Mike B Barnkob
- Centre for Cellular Immunotherapy of Haematological Cancer Odense (CITCO), Department of Clinical Immunology, Odense University Hospital, University of Southern Denmark, 5000 Odense C, Denmark
| | - Lisa N Kiani
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Uroosa Chughtai
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Rachel Heon-Roberts
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - Maria Claudia Caiazza
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - William McGuinness
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - Ricardo Márquez-Gómez
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - Jane Vowles
- James Martin Stem Cell Facility, Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK
| | - Fiona S Bunn
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Janine Brandes
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Peter Kilfeather
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - Jack P Connor
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - Hugo J R Fernandes
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK
| | - Tara M Caffrey
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense C, Denmark; Department of Neurology, Odense University Hospital, 5000 Odense C, Denmark
| | - Sally A Cowley
- James Martin Stem Cell Facility, Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK
| | - Martin R Larsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense M, Denmark
| | - Richard Wade-Martins
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, UK.
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10
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Carecho R, Figueira I, Terrasso AP, Godinho‐Pereira J, de Oliveira Sequeira C, Pereira SA, Milenkovic D, Leist M, Brito C, Nunes dos Santos C. Circulating (Poly)phenol Metabolites: Neuroprotection in a 3D Cell Model of Parkinson's Disease. Mol Nutr Food Res 2022; 66:e2100959. [PMID: 34964254 PMCID: PMC9788306 DOI: 10.1002/mnfr.202100959] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/10/2021] [Indexed: 12/30/2022]
Abstract
SCOPE Diets rich in (poly)phenols have been associated with positive effects on neurodegenerative disorders, such as Parkinson's disease (PD). Several low-molecular weight (poly)phenol metabolites (LMWPM) are found in the plasma after consumption of (poly)phenol-rich food. It is expected that LMWPM, upon reaching the brain, may have beneficial effects against both oxidative stress and neuroinflammation, and possibly attenuate cell death mechanisms relate to the loss of dopaminergic neurons in PD. METHODS AND RESULTS This study investigates the neuroprotective potential of two blood-brain barrier permeant LMWPM, catechol-O-sulfate (cat-sulf), and pyrogallol-O-sulfate (pyr-sulf), in a human 3D cell model of PD. Neurospheroids were generated from LUHMES neuronal precursor cells and challenged by 1-methyl-4-phenylpyridinium (MPP+ ) to induce neuronal stress. LMWPM pretreatments were differently neuroprotective towards MPP+ insult, presenting distinct effects on the neuronal transcriptome. Particularly, cat-sulf pretreatment appeared to boost counter-regulatory defense mechanisms (preconditioning). When MPP+ is applied, both LMWPM positively modulated glutathione metabolism and heat-shock response, as also favorably shifting the balance of pro/anti-apoptotic proteins. CONCLUSIONS Our findings point to the potential of LMWPM to trigger molecular mechanisms that help dopaminergic neurons to cope with a subsequent toxic insult. They are promising molecules to be further explored in the context of preventing and attenuating parkinsonian neurodegeneration.
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Affiliation(s)
- Rafael Carecho
- CEDOCNOVA Medical SchoolFaculdade de Ciências MédicasUniversidade NOVA de Lisboa1150‐082LisboaPortugal
- ITQBInstituto de Tecnologia Química e Biológica António XavierUniversidade Nova de Lisboa2780‐157OeirasPortugal
| | - Inês Figueira
- CEDOCNOVA Medical SchoolFaculdade de Ciências MédicasUniversidade NOVA de Lisboa1150‐082LisboaPortugal
| | - Ana Paula Terrasso
- ITQBInstituto de Tecnologia Química e Biológica António XavierUniversidade Nova de Lisboa2780‐157OeirasPortugal
- iBETInstituto de Biologia Experimental e Tecnológica2781–901OeirasPortugal
| | - Joana Godinho‐Pereira
- ITQBInstituto de Tecnologia Química e Biológica António XavierUniversidade Nova de Lisboa2780‐157OeirasPortugal
- iBETInstituto de Biologia Experimental e Tecnológica2781–901OeirasPortugal
| | | | - Sofia Azeredo Pereira
- CEDOCNOVA Medical SchoolFaculdade de Ciências MédicasUniversidade NOVA de Lisboa1150‐082LisboaPortugal
| | - Dragan Milenkovic
- INRAEUNHUniversité Clermont Auvergne63122St Genes ChampanelleFrance
- Department of NutritionUniversity of California Davis95616DavisCAUSA
| | - Marcel Leist
- In‐vitro Toxicology and BiomedicineUniversity of Konstanz78457ConstanceGermany
| | - Catarina Brito
- ITQBInstituto de Tecnologia Química e Biológica António XavierUniversidade Nova de Lisboa2780‐157OeirasPortugal
- iBETInstituto de Biologia Experimental e Tecnológica2781–901OeirasPortugal
| | - Cláudia Nunes dos Santos
- CEDOCNOVA Medical SchoolFaculdade de Ciências MédicasUniversidade NOVA de Lisboa1150‐082LisboaPortugal
- ITQBInstituto de Tecnologia Química e Biológica António XavierUniversidade Nova de Lisboa2780‐157OeirasPortugal
- iBETInstituto de Biologia Experimental e Tecnológica2781–901OeirasPortugal
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11
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Li J, Luo H, Zheng H, Duan S, Zhao T, Yuan Y, Liu Y, Zhang X, Wang Y, Yang J, Xu Y. Clinical application of prion-like seeding in α-synucleinopathies: Early and non-invasive diagnosis and therapeutic development. Front Mol Neurosci 2022; 15:975619. [PMID: 36299857 PMCID: PMC9588983 DOI: 10.3389/fnmol.2022.975619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/02/2022] [Indexed: 11/13/2022] Open
Abstract
The accumulation and deposition of misfolded α-synuclein (α-Syn) aggregates in the brain is the central event in the pathogenesis of α-synucleinopathies, including Parkinson’s disease, dementia with Lewy bodies, and multiple-system atrophy. Currently, the diagnosis of these diseases mainly relies on the recognition of advanced clinical manifestations. Differential diagnosis among the various α-synucleinopathies subtypes remains challenging. Misfolded α-Syn can template its native counterpart into the same misfolded one within or between cells, behaving as a prion-like seeding. Protein-misfolding cyclic amplification and real-time quaking-induced conversion are ultrasensitive protein amplification assays initially used for the detection of prion diseases. Both assays showed high sensitivity and specificity in detection of α-synucleinopathies even in the pre-clinical stage recently. Herein, we collectively reviewed the prion-like properties of α-Syn and critically assessed the detection techniques of α-Syn-seeding activity. The progress of test tissues, which tend to be less invasive, is presented, particularly nasal swab, which is now widely known owing to the global fight against coronavirus disease 2019. We highlight the clinical application of α-Syn seeding in early and non-invasive diagnosis. Moreover, some promising therapeutic perspectives and clinical trials targeting α-Syn-seeding mechanisms are presented.
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Affiliation(s)
- Jiaqi Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Haiyang Luo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Honglin Zheng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Suying Duan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Taiqi Zhao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Yanpeng Yuan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Yutao Liu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaoyun Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Yangyang Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
- *Correspondence: Jing Yang,
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
- Yuming Xu,
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12
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Roy A, Banerjee R, Choudhury S, Chatterjee K, Mondal B, Dey S, Kumar H. Novel inflammasome and oxidative modulators in Parkinson's disease: A prospective study. Neurosci Lett 2022; 786:136768. [PMID: 35780939 DOI: 10.1016/j.neulet.2022.136768] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 06/02/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The etiopathogenesis of Parkinson's disease (PD) is not clear. Yet, it seems likely that inflammation as well as oxidative stress plays a major role in the disease pathogenesis. Based on our previous findings, we aimed to investigate prospective changes in peripheral inflammasome and oxidative modulators in relation to the progression of motor symptoms and severity of PD. METHODS Levels of inflammatory and oxidative markers in the serum of PD patients and healthy controls were estimated by quantitative ELISA and spectrophotometric methods at the baseline and at the end of one year. RESULTS In PD patients, serum NLRP3 inflammasome and IL-1β levels increased significantly over a year, compared to the baseline. The average enzymatic activity of serum SOD1 was also augmented at one-year follow-up. Alongside these serummarker changes, the mean motorseverity of this patient cohort worsened over the time period. CONCLUSION This pioneering study identified a novel association of peripheral inflammatory and oxidative markers with the progression of PD. Correlation of these serum proteins with the central pathological changes in PD and disease severity in a prospective manner might be useful not only for prognostication, but for understanding disease mechanisms and for planning future therapeutic strategies.
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Affiliation(s)
- Akash Roy
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India; Department of Physiology, University of Calcutta, Kolkata, India
| | - Rebecca Banerjee
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Supriyo Choudhury
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Koustav Chatterjee
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Banashree Mondal
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Sanjit Dey
- Department of Physiology, University of Calcutta, Kolkata, India; UGC Centre for Nanoscience and Nanotechnology and UGC Centre with Potential for Excellence in Particular Area (CPEPA), University of Calcutta, Kolkata, India.
| | - Hrishikesh Kumar
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India.
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Stoco-Oliveira MC, Valente HB, Vanzella LM, André LB, Rodrigues MV, Vanderlei FM, Carvalho ACD, Vanderlei LCM. Does length of time since diagnosis in Parkinson's disease influence heart rate variability? A cross-sectional study. ARQUIVOS DE NEURO-PSIQUIATRIA 2022; 80:593-600. [PMID: 35613209 DOI: 10.1590/0004-282x-anp-2021-0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/15/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Intrinsic changes in Parkinson's disease (PD) affect the autonomic nervous system, and the disease course can aggravate the initial condition. Although the impact of time since disease onset on autonomic modulation has already been studied in other populations, this has not yet been investigated in PD. OBJECTIVE To investigate the impact of the length of time since diagnosis on the cardiac autonomic modulation of individuals with PD and compare with healthy individuals. METHODS Fifty participants were divided into three groups: a control group (CG; n = 24) and two groups with PD, divided according to the median length of time since diagnosis (median = 5.5 years): below the median (PG1; n = 13) and above the median (PG2; n = 13). To evaluate cardiac autonomic modulation, heart rate was obtained beat-to-beat in the supine position over a 30-min period, and heart rate variability (HRV) indices were calculated using linear methods in the time and frequency domains. RESULTS There were no significant differences in HRV indices between the PG groups, or between the three groups regarding Mean RR, LFun, HFun and LF/HF ratio. Significant reductions in the RMSSD, SDNN, pNN50, LFms2 and HFms2 indices were observed in PG1 and PG2, compared with CG. CONCLUSIONS The cardiac autonomic modulation of individuals with PD was not influenced by the time since diagnosis. However, reduced parasympathetic and global modulation were observed in these individuals, compared with controls. These results emphasize the importance of aerobic exercise for improving autonomic modulation among individuals with PD.
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Affiliation(s)
- Mileide Cristina Stoco-Oliveira
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
| | - Heloisa Balotari Valente
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
| | - Laís Manata Vanzella
- University Health Network, Toronto Rehabilitation Institute, East York ON, Canada
| | - Larissa Borba André
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
| | - Mariana Viana Rodrigues
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
| | - Franciele Marques Vanderlei
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
| | - Augusto Cesinando de Carvalho
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
| | - Luiz Carlos Marques Vanderlei
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências e Tecnologia, Departamento de Fisioterapia, Presidente Prudente SP, Brazil
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14
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Xu Z, Elrashidy RA, Li B, Liu G. Oxidative Stress: A Putative Link Between Lower Urinary Tract Symptoms and Aging and Major Chronic Diseases. Front Med (Lausanne) 2022; 9:812967. [PMID: 35360727 PMCID: PMC8960172 DOI: 10.3389/fmed.2022.812967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Aging and major chronic diseases are risk factors for lower urinary tract symptoms (LUTS). On the other hand, oxidative stress (OS) is one of the fundamental mechanisms of aging and the development of chronic diseases. Therefore, OS might be a candidate mechanism linking these two clinical entities. This article aims to summarize the studies on the prevalence of LUTS, the role of OS in aging and chronic diseases, and the potential mechanisms supporting the putative link. A comprehensive literature search was performed to identify recent reports investigating LUTS and OS in major chronic diseases. In addition, studies on the impact of OS on the lower urinary tract, including bladder, urethra, and prostate, were collected and summarized. Many studies showed LUTS are prevalent in aging and major chronic diseases, including obesity, metabolic syndrome, diabetes, cardiovascular disease, hypertension, obstructive sleep apnea, autoimmune diseases, Alzheimer’s disease, and Parkinson’s disease. At the same time, OS is a key component in the pathogenesis of those chronic diseases and conditions. Recent studies also provided evidence that exacerbated OS can cause functional and/or structural changes in the bladder, urethra, and prostate, leading to LUTS. The reviewed data support the concept that OS is involved in multiple risk factors-associated LUTS, although further studies are needed to confirm the causative relationship. The specific ROS/RNS and corresponding reactions/pathways involved in chronic diseases and associated LUTS should be identified in the future and could serve as therapeutic targets.
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Affiliation(s)
- Zhenqun Xu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, United States
- Department of Urology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Rania A. Elrashidy
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Bo Li
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, United States
- Department of Urology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, United States
- *Correspondence: Guiming Liu,
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15
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Martinez-Banaclocha M. N-Acetyl-Cysteine: Modulating the Cysteine Redox Proteome in Neurodegenerative Diseases. Antioxidants (Basel) 2022; 11:antiox11020416. [PMID: 35204298 PMCID: PMC8869501 DOI: 10.3390/antiox11020416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 12/14/2022] Open
Abstract
In the last twenty years, significant progress in understanding the pathophysiology of age-associated neurodegenerative diseases has been made. However, the prevention and treatment of these diseases remain without clinically significant therapeutic advancement. While we still hope for some potential genetic therapeutic approaches, the current reality is far from substantial progress. With this state of the issue, emphasis should be placed on early diagnosis and prompt intervention in patients with increased risk of neurodegenerative diseases to slow down their progression, poor prognosis, and decreasing quality of life. Accordingly, it is urgent to implement interventions addressing the psychosocial and biochemical disturbances we know are central in managing the evolution of these disorders. Genomic and proteomic studies have shown the high molecular intricacy in neurodegenerative diseases, involving a broad spectrum of cellular pathways underlying disease progression. Recent investigations indicate that the dysregulation of the sensitive-cysteine proteome may be a concurrent pathogenic mechanism contributing to the pathophysiology of major neurodegenerative diseases, opening new therapeutic opportunities. Considering the incidence and prevalence of these disorders and their already significant burden in Western societies, they will become a real pandemic in the following decades. Therefore, we propose large-scale investigations, in selected groups of people over 40 years of age with decreased blood glutathione levels, comorbidities, and/or mild cognitive impairment, to evaluate supplementation of the diet with low doses of N-acetyl-cysteine, a promising and well-tolerated therapeutic agent suitable for long-term use.
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16
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Yang J, Fan Y, Yan B, Zhao B, Qian L, Gao F, Ma Q, Yang L, Wang W, Bai L, Zhu F, Ma X. Mendelian randomization analyses reveal novel drug targets for anorexia nervosa. Prog Neuropsychopharmacol Biol Psychiatry 2022; 112:110427. [PMID: 34389437 DOI: 10.1016/j.pnpbp.2021.110427] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 11/30/2022]
Abstract
Among all psychiatric disorders, anorexia nervosa (AN) has the highest mortality rate. However, there is still no pharmacological therapy for AN. The human plasma proteome may be a great cornerstone for the development of new drugs against AN. Here we performed a Mendelian randomization (MR) analysis to identify causal risk proteins for AN. Exposure data were extracted from a large genome-wide association study (GWAS) of 2994 plasma proteins in 3301 subjects of European descent, while outcome data were obtained from another GWAS of AN (16,992 cases and 55,525 controls of European descent). MR analyses were performed using the inverse-variance weighted (IVW) method and other sensitivity analysis methods. Using single nucleotide polymorphisms as instruments, this study suggested that high TXNDC12 levels were associated with a higher risk of AN (IVW Odd's ratio [OR]: 1.12; 95% confidence interval [CI]: 1.08-1.16; P = 2.35 × 10-10), while another protein ADH1B showed the opposite effect (IVW OR: 0.89; 95% CI: 0.85-0.93; P = 2.99 × 10-7). The causal associations were robust in multivariable models, genome-wide significant models, and with additional MR methods. No pleiotropy was observed. Our findings suggest that TXNDC12 was associated with a high risk of AN, while AHD1B was associated with a low risk of AN. They might both have implications in AN by regulating the brain dopamine reward system. In combination with existing knowledge on AN, these proteins may be novel drug targets for AN treatment.
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Affiliation(s)
- Jian Yang
- Clinical Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Yajuan Fan
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Bin Yan
- Clinical Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Binbin Zhao
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Li Qian
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Fengjie Gao
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Qingyan Ma
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Lihong Yang
- Clinical Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Wei Wang
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Ling Bai
- Clinical Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Feng Zhu
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Xiancang Ma
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
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17
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Dehghan F, Zamani S, Barreiro C, Jami MS. Irisin injection mimics exercise effects on the brain proteome. Eur J Neurosci 2021; 54:7422-7441. [PMID: 34655501 DOI: 10.1111/ejn.15493] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/30/2021] [Accepted: 10/02/2021] [Indexed: 12/13/2022]
Abstract
Physical inactivity can endanger human health and increase the incidence of neurodegenerative disease. Exercise has tremendous beneficial effects on brain health and cognitive function, especially in older adults. It also improves brain-related outcomes in depression, epilepsy and neurodegenerative disorders, such as Parkinson's disease and Alzheimer's disease. Irisin is a mediator of the beneficial effects of exercise. This study aimed to assess the proteome alterations in adult male National Maritime Research Institute (NMRI) mice brain tissue upon three different conditions including endurance exercise, resistance exercise and irisin injection. Quantification of irisin levels in blood was performed using irisin-ELISA Kit. Quantification and identification of proteins via two-dimensional gel electrophoresis and matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry (MS)/MS showed the alteration of at least 21 proteins due to different treatments. Cellular pathway analysis revealed common beneficial effects of sole irisin treatment and different exercise procedures suggesting the capability of irisin injection to substitute the exercise when physical activity is not possible.
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Affiliation(s)
- Fariba Dehghan
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Saeed Zamani
- Department of Anatomical Sciences, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran.,Department of Anatomical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Carlos Barreiro
- INBIOTEC (Instituto de Biotecnología de León), León, Spain.,Biochemistry and Molecular Biology Area, Department of Molecular Biology, University of León, Vegazana Campus, León, Spain
| | - Mohammad-Saeid Jami
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran.,QIANBIOTEC, Research and Development Center for Biotechnology, Isfahan, Iran.,Department of Neurology, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, California, USA
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18
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1,5-Benzodiazepin-2(3H)-ones: In Vitro Evaluation as Antiparkinsonian Agents. Antioxidants (Basel) 2021; 10:antiox10101584. [PMID: 34679721 PMCID: PMC8533176 DOI: 10.3390/antiox10101584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 01/08/2023] Open
Abstract
A new series of twenty-three 1,5-benzodiazepin-2(3H)-ones were synthesized and evaluated in the 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), ferric reducing antioxidant power (FRAP), and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays as a new chemotype with antioxidant and good drug-like properties. All of the derivatives showed low cytotoxicity in comparison to curcumin against the human neuroblastoma SH-SY5Y and the human hepatoma HepG2 cell lines. Experimental solubility in bio-relevant media showed a good relationship with melting points in this series. Five compounds with the best antioxidant properties showed neuroprotectant activity against H2O2-induced oxidative stress in the SH-SY5Y cell line. From them, derivatives 4-phenyl-1H-1,5-benzodiazepin-2(3H)-one (18) and 4-(3,4,5-trimethoxyphenyl)-1H-1,5-benzodiazepin-2(3H)-one (20) yielded good neuroprotection activity in the same neuronal cell line under 6-OHD and MPP+ insults as in vitro models of mitochondrial dysfunction and oxidative stress in Parkinson’s disease (PD). Both compounds also demonstrated a significant reduction of intracellular Reactive Oxygen Species (ROS) and superoxide levels, in parallel with a good improvement of the Mitochondrial Membrane Potential (ΔΨm). Compared with curcumin, compound 18 better reduced lipid peroxidation levels, malondialdehyde (MDA), in SH-SY5Y cells under oxidative stress pressure and recovered intracellular glutathione synthetase (GSH) levels. Apoptosis and caspase-3 levels of SH-SY5Y under H2O2 pressure were also reduced after treatment with 18. Neuroprotection in neuron-like differentiated SH-SY5Y cells was also achieved with 18. In summary, this family of 1,5-benzodiazepin-2-ones with an interesting antioxidant and drug-like profile, with low cytotoxic and good neuroprotectant activity, constitutes a new promising chemical class with high potential for the development of new therapeutic agents against PD.
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19
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Zhang T, Gaffrey MJ, Li X, Qian WJ. Characterization of cellular oxidative stress response by stoichiometric redox proteomics. Am J Physiol Cell Physiol 2020; 320:C182-C194. [PMID: 33264075 DOI: 10.1152/ajpcell.00040.2020] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The thiol redox proteome refers to all proteins whose cysteine thiols are subjected to various redox-dependent posttranslational modifications (PTMs) including S-glutathionylation (SSG), S-nitrosylation (SNO), S-sulfenylation (SOH), and S-sulfhydration (SSH). These modifications can impact various aspects of protein function such as activity, binding, conformation, localization, and interactions with other molecules. To identify novel redox proteins in signaling and regulation, it is highly desirable to have robust redox proteomics methods that can provide global, site-specific, and stoichiometric quantification of redox PTMs. Mass spectrometry (MS)-based redox proteomics has emerged as the primary platform for broad characterization of thiol PTMs in cells and tissues. Herein, we review recent advances in MS-based redox proteomics approaches for quantitative profiling of redox PTMs at physiological or oxidative stress conditions and highlight some recent applications. Considering the relative maturity of available methods, emphasis will be on two types of modifications: 1) total oxidation (i.e., all reversible thiol modifications), the level of which represents the overall redox state, and 2) S-glutathionylation, a major form of reversible thiol oxidation. We also discuss the significance of stoichiometric measurements of thiol PTMs as well as future perspectives toward a better understanding of cellular redox regulatory networks in cells and tissues.
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Affiliation(s)
- Tong Zhang
- Integrative Omics, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington
| | - Matthew J Gaffrey
- Integrative Omics, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington
| | - Xiaolu Li
- Integrative Omics, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington.,Bioproducts Sciences and Engineering Laboratory, Department of Biological Systems Engineering, Washington State University, Richland, Washington
| | - Wei-Jun Qian
- Integrative Omics, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington
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20
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Oxidative Stress Orchestrates MAPK and Nitric-Oxide Synthase Signal. Int J Mol Sci 2020; 21:ijms21228750. [PMID: 33228180 PMCID: PMC7699490 DOI: 10.3390/ijms21228750] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) are not only harmful to cell survival but also essential to cell signaling through cysteine-based redox switches. In fact, ROS triggers the potential activation of mitogen-activated protein kinases (MAPKs). The 90 kDa ribosomal S6 kinase 1 (RSK1), one of the downstream mediators of the MAPK pathway, is implicated in various cellular processes through phosphorylating different substrates. As such, RSK1 associates with and phosphorylates neuronal nitric oxide (NO) synthase (nNOS) at Ser847, leading to a decrease in NO generation. In addition, the RSK1 activity is sensitive to inhibition by reversible cysteine-based redox modification of its Cys223 during oxidative stress. Aside from oxidative stress, nitrosative stress also contributes to cysteine-based redox modification. Thus, the protein kinases such as Ca2+/calmodulin (CaM)-dependent protein kinase I (CaMKI) and II (CaMKII) that phosphorylate nNOS could be potentially regulated by cysteine-based redox modification. In this review, we focus on the role of post-translational modifications in regulating nNOS and nNOS-phosphorylating protein kinases and communication among themselves.
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21
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Martinez-Banaclocha M. Proteomic Complexity in Parkinson's Disease: A Redox Signaling Perspective of the Pathophysiology and Progression. Neuroscience 2020; 453:287-300. [PMID: 33212217 DOI: 10.1016/j.neuroscience.2020.11.006] [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: 07/25/2020] [Revised: 10/19/2020] [Accepted: 11/03/2020] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD) is a prevalent age-related neurodegenerative disorder that results in the progressive impairment of motor and cognitive functions. The majority of PD cases are sporadic, and only 5% of patients are associated with mutations in a few genes, which cause the early onset or familial PD. Environmental toxic substances and the individual genetic susceptibility play a role in sporadic cases, but despite significant efforts to treat and prevent the disease, the pathophysiological mechanisms leading to its onset and progress are not fully understood. In the last decade, genomic and proteomic studies have shown an increasing molecular complexity of sporadic PD, suggesting that a broad spectrum of biochemical pathways underlie its progression. Recent investigations and the literature review suggest the potential role of deregulation of the sensitive-cysteine proteome as a convergent pathogenic mechanism that may contribute to this complexity, opening new therapeutic opportunities.
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22
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Ameliorative role of diets fortified with Curcumin in a Drosophila melanogaster model of aluminum chloride-induced neurotoxicity. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104035] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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23
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Verma A, Ray A, Bapat D, Diwakar L, Kommaddi RP, Schneider BL, Hirsch EC, Ravindranath V. Glutaredoxin 1 Downregulation in the Substantia Nigra Leads to Dopaminergic Degeneration in Mice. Mov Disord 2020; 35:1843-1853. [PMID: 32618039 DOI: 10.1002/mds.28190] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) is characterized by a severe loss of the dopaminergic (DA) neurons in the substantia nigra pars compacta (SNpc). Perturbation of protein thiol redox homeostasis has been shown to play a role in the dysregulation of cell death and cell survival signaling pathways in these neurons. Glutaredoxin 1 (Grx1) is a thiol/disulfide oxidoreductase that catalyzes the deglutathionylation of proteins and is important for regulation of cellular protein thiol redox homeostasis. OBJECTIVES We evaluated if the downregulation of Grx1 could lead to dopaminergic degeneration and PD-relevant motor deficits in mice. METHODS Grx1 was downregulated unilaterally through viral vector-mediated transduction of short hairpin RNA against Grx1 into the SNpc. Behavioral assessment was performed through rotarod and elevated body swing test. Stereological analysis of tyrosine hydroxylase-positive and Nissl-positive neurons was carried out to evaluate neurodegeneration. RESULTS Downregulation of Grx1 resulted in contralateral bias of elevated body swing and reduced latency to fall off, accelerating rotarod. This was accompanied by a loss of tyrosine hydroxylase-positive neurons in the SNpc and their DA projections in the striatum. Furthermore, there was a loss Nissl-positive neurons in the SNpc, indicating cell death. This was selective to the SNpc neurons because DA neurons in the ventral tegmental area were unaffected akin to that seen in human PD. Furthermore, Grx1 mRNA expression was substantially decreased in the SNpc from PD patients. CONCLUSIONS Our study indicates that Grx1 is critical for the survival of SNpc DA neurons and that it is downregulated in human PD. © 2020 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Aditi Verma
- Centre for Neuroscience, Indian Institute of Science, Bangalore, India
| | - Ajit Ray
- Centre for Neuroscience, Indian Institute of Science, Bangalore, India
| | - Deepti Bapat
- Centre for Neuroscience, Indian Institute of Science, Bangalore, India
| | - Latha Diwakar
- Centre for Neuroscience, Indian Institute of Science, Bangalore, India.,Centre for Brain Research, Indian Institute of Science, Bangalore, India
| | - Reddy Peera Kommaddi
- Centre for Neuroscience, Indian Institute of Science, Bangalore, India.,Centre for Brain Research, Indian Institute of Science, Bangalore, India
| | - Bernard L Schneider
- Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Etienne C Hirsch
- Institut du Cerveau-ICM Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris, France
| | - Vijayalakshmi Ravindranath
- Centre for Neuroscience, Indian Institute of Science, Bangalore, India.,Centre for Brain Research, Indian Institute of Science, Bangalore, India
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24
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Abolaji AO, Fasae KD, Iwezor CE, Aschner M, Farombi EO. Curcumin attenuates copper-induced oxidative stress and neurotoxicity in Drosophila melanogaster. Toxicol Rep 2020; 7:261-268. [PMID: 32025502 PMCID: PMC6997559 DOI: 10.1016/j.toxrep.2020.01.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/23/2020] [Accepted: 01/26/2020] [Indexed: 01/23/2023] Open
Abstract
Curcumin is a hydrophobic polyphenol derived from the rhizome of the Herb Curcuma longa belonging to the family Zingiberaceae. Curcumin possesses antioxidative, anti-inflammatory and anti-depressant-like properties. In this study, we evaluated the rescue role of Curcumin in Copper2+-induced toxicity in D. melanogaster. Adult, wild type flies were exposed to Cu2+ (1 mM) and/or Curcumin (0.2 and 0.5 mg/kg diet) in the diet for 7 days. The results indicated that Cu2+- fed flies had reduced survival compared to the control group. Copper toxicity was also associated with a marked decrease in total thiol (T-SH), as well as catalase and glutathione S-transferase activities, contemporaneous with increased acetylcholinesterase (AChE) activity, nitric oxide (nitrate and nitrite) and dopamine levels. Co-exposure of flies to Cu2+ and Curcumin prevented mortality, inhibited AChE activity and restored dopamine to normal levels (p < 0.05). Moreover, Curcumin restored eclosion rates, and the cellular antioxidant status, as well as alleviated the accumulation of nitric oxide level in the flies. Curcumin ameliorated oxidative damage in the flies as evidenced by the survival rates, longevity assay as well as the restoration of antioxidant status. Our findings thus suggest that Curcumin ameliorated Cu2+-induced neurotoxicity in D. melanogaster and as such could be considered an effective therapeutic agent in the prevention and treatment of disorders, where oxidative stress is implicated.
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Affiliation(s)
- Amos O Abolaji
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Kehinde D Fasae
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Chizim E Iwezor
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Ebenezer O Farombi
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
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25
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Zhao L, Bai F, Chen F, Guo M, Gan L, Zhang H, Fang J. A β-allyl carbamate fluorescent probe for vicinal dithiol proteins. Chem Commun (Camb) 2020; 56:2857-2860. [DOI: 10.1039/c9cc09841k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An unprecedented β-allyl carbamate fluorescent probe for vicinal dithiol proteins (VDPs) was developed. The favourable properties of the probe make it a useful tool for tracing the global changes of VDPs in living systems.
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Affiliation(s)
- Lanning Zhao
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Feifei Bai
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Fan Chen
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Menghuan Guo
- School of Pharmacy Lanzhou University
- Lanzhou
- China
| | - Lu Gan
- Department of Radiation Medicine
- Institute of Modern Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Hong Zhang
- Department of Radiation Medicine
- Institute of Modern Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
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26
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Bogetofte H, Jensen P, Okarmus J, Schmidt SI, Agger M, Ryding M, Nørregaard P, Fenger C, Zeng X, Graakjær J, Ryan BJ, Wade-Martins R, Larsen MR, Meyer M. Perturbations in RhoA signalling cause altered migration and impaired neuritogenesis in human iPSC-derived neural cells with PARK2 mutation. Neurobiol Dis 2019; 132:104581. [DOI: 10.1016/j.nbd.2019.104581] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 07/30/2019] [Accepted: 08/20/2019] [Indexed: 01/11/2023] Open
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27
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Abolaji AO, Ajala VO, Adigun JO, Adedara IA, Kinyi HW, Farombi EO. Protective role of resveratrol, a natural polyphenol, in sodium fluoride-induced toxicity in Drosophila melanogaster. Exp Biol Med (Maywood) 2019; 244:1688-1694. [PMID: 31766888 DOI: 10.1177/1535370219890334] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Sodium fluoride (NaF) is used in water fluoridation and dental products such as mouth rinses and toothpastes. Resveratrol is a natural polyphenol with antioxidant and anti-inflammatory properties. The present study was carried out to evaluate the toxicity of NaF and the protective role of resveratrol in Drosophila melanogaster. For longevity assay, Harwich strain of D. melanogaster was treated with NaF (0, 10, 30, 50, 70 and 90 mg/kg diet) throughout the lifespan and daily mortality recorded. Then, flies were again treated with similar doses of NaF for seven days to evaluate survival rate and oxidative stress markers. Thereafter, 60 mg resveratrol/kg diet was selected to determine its ameliorative role in NaF (70 mg/kg)-induced toxicity in flies: Group A (control), Group B (60 mg resveratrol/kg diet), Group C (70 mg NaF/kg diet), and Group D (resveratrol, 60 mg/kg diet) + NaF, 70 mg/kg diet). Thereafter, Glutathione-S-transferase (GST), catalase and acetylcholinesterase (AchE) activities, as well as total thiol (T-SH), nitrites/nitrates and hydrogen peroxide (H2O2) levels were determined. The results showed that resveratrol prevented NaF-induced elevation of H2O2and nitrites/nitrates levels, as well as catalase activity. In addition, resveratrol restored NaF-induced inhibition of GST and AChE activities and depletion of T-SH content ( P < 0.05). Conclusively, resveratrol offered protective benefit against NaF-mediated toxicity in flies due to its antioxidant and anti-inflammatory properties.Impact statementD. melanogaster was used to understand the impact of NaF on lifespan and emergence rate as well as the rescue role of resveratrol. These parameters are difficult to carry out in previously used models such as rodents. This further enforces in part, the suitability of D. melanogaster in studying NaF-induced toxicity and the therapeutic effects of drugs. Additionally, we found that resveratrol rescued D. melanogaster from oxidative stress-induced by sodium fluoride (NaF) administration. This study is of public health significance as it indicated that the consumption of fruits rich in resveratrol such as grapes may offer protective role against inadvertent exposure to NaF and related chemicals.
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Affiliation(s)
- Amos O Abolaji
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 20028, Nigeria
| | - Victor O Ajala
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 20028, Nigeria
| | - Janet O Adigun
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 20028, Nigeria
| | - Isaac A Adedara
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 20028, Nigeria
| | - Hellen W Kinyi
- Department of Biochemistry, School of Biomedical Sciences, Kampala International University, Kampala 20131, Uganda
| | - Ebenezer O Farombi
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 20028, Nigeria
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28
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Hacimusalar Y, Karaaslan O, Bal C, Kocer D, Gok G, Yildiz B. Methamphetamine’s effects on oxidative stress markers may continue after detoxification: a case–control study. PSYCHIAT CLIN PSYCH 2019. [DOI: 10.1080/24750573.2019.1652414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Affiliation(s)
- Yunus Hacimusalar
- Department of Psychiatry, Yozgat Bozok University Faculty of Medicine, Yozgat, Turkey
| | - Ozgul Karaaslan
- Department of Psychiatry, Yozgat Bozok University Faculty of Medicine, Yozgat, Turkey
| | - Ceylan Bal
- Department of Biochemistry, Yıldırım Beyazıt University, Ankara, Turkey
| | - Derya Kocer
- Department of Biochemistry, Kayseri City Hospital, Kayseri, Turkey
| | - Gamze Gok
- Department of Biochemistry, Yıldırım Beyazıt University, Ankara, Turkey
| | - Bayram Yildiz
- Department of Psychiatry, Kayseri State Hospital, Kayseri, Turkey
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29
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Synthesis and Biological Evaluation of Novel Selenyl and Sulfur-l-Dopa Derivatives as Potential Anti-Parkinson's Disease Agents. Biomolecules 2019; 9:biom9060239. [PMID: 31216771 PMCID: PMC6628379 DOI: 10.3390/biom9060239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 12/11/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by loss of dopaminergic neurons at level of substantia nigra pars compacta. To date, there is no cure for this pathology, except for some drugs able to alleviate the symptoms of PD. In this paper we report the synthesis and biological evaluation of novel sulfur- and selenyl-l-Dopa (LD) derivatives (SP1-6) obtained through the amide junction between the amino group of LD and carboxylic moiety of sulfur- and selenyl-organic compounds, which are commercially available. Biological activity was evaluated on human undifferentiated and retinoic acid/phorbol myristyl acetate (RA/PMA)-differentiated SY-SH5Y neuroblastoma cell line using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Antioxidant activity against oxidative stress was measured using nitroblue tetrazolium (NBT) and 2',7'-dichlorodihydrofluorescein diacetate (H2DCFDA) assays. Finally, physico-chemical characterization and plasma stability studies of SP1-6 were also performed. Biological data revealed that SP6 has a significant protective action against the neurotoxic action of 6-hydroxydopamine (6-OHDA) and H2O2 in a RA/PMA-differentiated SY-SH5Y neuroblastoma cell line that proved to be an effective antioxidant and protective compound. SP6, endowed with a lipophilic nature, low molecular weight, and plasma stability, can easily cross biological membranes via passive diffusion such as through the blood-brain barrier. SP6 has great potential for developing novel pharmacological approach for neurodegenerative diseases, such as PD. Further studies will help define its exact antioxidant mechanism and determine whether the neuroprotective action is mediated or modulated by glutathione peroxidase (GPx).
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30
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Milanese C, Payán-Gómez C, Mastroberardino PG. Cysteine oxidation and redox signaling in dopaminergic neurons physiology and in Parkinson’s disease. CURRENT OPINION IN PHYSIOLOGY 2019. [DOI: 10.1016/j.cophys.2019.04.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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31
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Hu G, Zhang B, Zhou P, Hou Y, Jia H, Liu Y, Gan L, Zhang H, Mao Y, Fang J. Depletion of protein thiols and the accumulation of oxidized thioredoxin in Parkinsonism disclosed by a red-emitting and environment-sensitive probe. J Mater Chem B 2019; 7:2696-2702. [DOI: 10.1039/c8tb03101k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Protein sulfhydryl groups play a vital role in maintaining cellular redox homeostasis and protein functions and have attracted increasing interests for the selective detection of protein thiols over low-molecular-weight thiols (LMWTs).
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32
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Choi JW, Kim S, Park JH, Kim HJ, Shin SJ, Kim JW, Woo SY, Lee C, Han SM, Lee J, Pae AN, Han G, Park KD. Optimization of Vinyl Sulfone Derivatives as Potent Nuclear Factor Erythroid 2-Related Factor 2 (Nrf2) Activators for Parkinson’s Disease Therapy. J Med Chem 2018; 62:811-830. [DOI: 10.1021/acs.jmedchem.8b01527] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ji Won Choi
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
| | - Siwon Kim
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
- Division of Bio-Med Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
| | - Jong-Hyun Park
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
| | - Hyeon Jeong Kim
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Su Jeong Shin
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
| | - Jin Woo Kim
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
| | - Seo Yeon Woo
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
| | - Changho Lee
- Division of Functional Food Research, Korea Food Research Institute, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Sang Moon Han
- Doping Control Center, KIST, Seoul 02792, Republic of Korea
| | - Jaeick Lee
- Doping Control Center, KIST, Seoul 02792, Republic of Korea
| | - Ae Nim Pae
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
- Division of Bio-Med Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Gyoonhee Han
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Ki Duk Park
- Convergence Research Center for Diagnosis, Treatment & Care System of Dementia, Korea Institute of Science & Technology (KIST), Seoul 02792, Republic of Korea
- Division of Bio-Med Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
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33
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Abolaji AO, Adedara AO, Adie MA, Vicente-Crespo M, Farombi EO. Resveratrol prolongs lifespan and improves 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced oxidative damage and behavioural deficits in Drosophila melanogaster. Biochem Biophys Res Commun 2018; 503:1042-1048. [DOI: 10.1016/j.bbrc.2018.06.114] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 06/20/2018] [Indexed: 12/16/2022]
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34
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Choi ML, Gandhi S. Crucial role of protein oligomerization in the pathogenesis of Alzheimer's and Parkinson's diseases. FEBS J 2018; 285:3631-3644. [PMID: 29924502 DOI: 10.1111/febs.14587] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/11/2018] [Accepted: 06/14/2018] [Indexed: 12/16/2022]
Abstract
Misfolding and aggregation of the proteins amyloid-β, tau and alpha-synuclein is the predominant pathology underlying the neurodegenerative disorders, Alzheimer's and Parkinson's disease. While end stage insoluble products of aggregation have been well characterised in human and animal models of disease, accumulating evidence from biophysical, cellular and in vivo studies has shown that soluble intermediates of aggregation, or oligomers, may be the key species that mediate toxicity and underlie seeding and spreading in disease. Here, we review the process of protein misfolding, and the intrinsic and extrinsic processes that cause the native states of the key aggregating proteins to undergo conformational change to form oligomers and ultimately fibrils. We discuss the structural features of the key toxic intermediate, and describe the putative mechanisms by which oligomers may cause cell toxicity. Finally, we explore the potential therapeutic approaches raised by the oligomer hypothesis in neurodegenerative disease.
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Affiliation(s)
- Minee L Choi
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, UK.,The Francis Crick Institute, London, UK
| | - Sonia Gandhi
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, UK.,The Francis Crick Institute, London, UK
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Fan Y, Makar M, Wang MX, Ai HW. Monitoring thioredoxin redox with a genetically encoded red fluorescent biosensor. Nat Chem Biol 2017; 13:1045-1052. [PMID: 28671680 PMCID: PMC5605834 DOI: 10.1038/nchembio.2417] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 05/08/2017] [Indexed: 02/07/2023]
Abstract
Thioredoxin (Trx) is one of the two major thiol antioxidants, playing essential roles in redox homeostasis and signaling. Despite its importance, there is a lack of methods for monitoring Trx redox dynamics in live cells, hindering a better understanding of physiological and pathological roles of the Trx redox system. In this work, we developed the first genetically encoded fluorescent biosensor for Trx redox by engineering a redox relay between the active-site cysteines of human Trx1 and rxRFP1, a redox-sensitive red fluorescent protein. We used the resultant biosensor-TrxRFP1-to selectively monitor perturbations of Trx redox in various mammalian cell lines. We subcellularly localized TrxRFP1 to image compartmentalized Trx redox changes. We further combined TrxRFP1 with a green fluorescent Grx1-roGFP2 biosensor to simultaneously monitor Trx and glutathione redox dynamics in live cells in response to chemical and physiologically relevant stimuli.
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Affiliation(s)
- Yichong Fan
- The Environmental Toxicology Graduate Program, University of California Riverside, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Merna Makar
- Department of Chemistry, University of California Riverside, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Michael X. Wang
- Department of Chemistry, University of California Riverside, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Hui-wang Ai
- The Environmental Toxicology Graduate Program, University of California Riverside, 501 Big Springs Road, Riverside, CA, 92521, USA
- Department of Chemistry, University of California Riverside, 501 Big Springs Road, Riverside, CA, 92521, USA
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36
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Metabolic Investigations of the Molecular Mechanisms Associated with Parkinson's Disease. Metabolites 2017; 7:metabo7020022. [PMID: 28538683 PMCID: PMC5487993 DOI: 10.3390/metabo7020022] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/16/2017] [Accepted: 05/16/2017] [Indexed: 12/20/2022] Open
Abstract
Parkinson’s disease (PD) is a neurodegenerative disorder characterized by fibrillar cytoplasmic aggregates of α-synuclein (i.e., Lewy bodies) and the associated loss of dopaminergic cells in the substantia nigra. Mutations in genes such as α-synuclein (SNCA) account for only 10% of PD occurrences. Exposure to environmental toxicants including pesticides and metals (e.g., paraquat (PQ) and manganese (Mn)) is also recognized as an important PD risk factor. Thus, aging, genetic alterations, and environmental factors all contribute to the etiology of PD. In fact, both genetic and environmental factors are thought to interact in the promotion of idiopathic PD, but the mechanisms involved are still unclear. In this study, we summarize our findings to date regarding the toxic synergistic effect between α-synuclein and paraquat treatment. We identified an essential role for central carbon (glucose) metabolism in dopaminergic cell death induced by paraquat treatment that is enhanced by the overexpression of α-synuclein. PQ “hijacks” the pentose phosphate pathway (PPP) to increase NADPH reducing equivalents and stimulate paraquat redox cycling, oxidative stress, and cell death. PQ also stimulated an increase in glucose uptake, the translocation of glucose transporters to the plasma membrane, and AMP-activated protein kinase (AMPK) activation. The overexpression of α-synuclein further stimulated an increase in glucose uptake and AMPK activity, but impaired glucose metabolism, likely directing additional carbon to the PPP to supply paraquat redox cycling.
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Blanco-Lezcano L, Jimenez-Martin J, Díaz-Hung ML, Alberti-Amador E, Wong-Guerra M, González-Fraguela ME, Estupiñán-Díaz B, Serrano-Sánchez T, Francis-Turner L, Delgado-Ocaña S, Núñez-Figueredo Y, Vega-Hurtado Y, Fernández-Jiménez I. Motor dysfunction and alterations in glutathione concentration, cholinesterase activity, and BDNF expression in substantia nigra pars compacta in rats with pedunculopontine lesion. Neuroscience 2017; 348:83-97. [DOI: 10.1016/j.neuroscience.2017.02.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 01/19/2017] [Accepted: 02/07/2017] [Indexed: 12/18/2022]
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RA Differentiation Enhances Dopaminergic Features, Changes Redox Parameters, and Increases Dopamine Transporter Dependency in 6-Hydroxydopamine-Induced Neurotoxicity in SH-SY5Y Cells. Neurotox Res 2017; 31:545-559. [DOI: 10.1007/s12640-016-9699-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/28/2016] [Accepted: 12/30/2016] [Indexed: 12/19/2022]
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39
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Syed A, Arora N, Bunch TA, Smith EA. The role of a conserved membrane proximal cysteine in altering αPS2CβPS integrin diffusion. Phys Biol 2016; 13:066005. [PMID: 27848929 DOI: 10.1088/1478-3975/13/6/066005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cysteine residues (Cys) in the membrane proximal region are common post-translational modification (PTM) sites in transmembrane proteins. Herein, the effects of a highly conserved membrane proximal α-subunit Cys1368 on the diffusion properties of αPS2CβPS integrins are reported. Sequence alignment shows that this cysteine is palmitoylated in human α3 and α6 integrin subunits. Replacing Cys1368 in wild-type integrins with valine (Val1368) putatively blocks a PTM site and alters integrins' ligand binding and diffusion characteristics. Both fluorescence recovery after photobleaching (FRAP) and single particle tracking (SPT) diffusion measurements show Val1368 integrins are more mobile compared to wild-type integrins. Approximately 33% and 8% more Val1368 integrins are mobile as measured by FRAP and SPT, respectively. The mobile Val1368 integrins also exhibit less time-dependent diffusion, as measured by FRAP. Tandem mass spectrometry data suggest that Cys1368 contains a redox or palmitoylation PTM in αPS2CβPS integrins. This membrane proximal Cys may play an important role in the diffusion of other alpha subunits that contain this conserved residue.
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Affiliation(s)
- Aleem Syed
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, IA 50011, USA
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40
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Transient glutathione depletion in the substantia nigra compacta is associated with neuroinflammation in rats. Neuroscience 2016; 335:207-20. [DOI: 10.1016/j.neuroscience.2016.08.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 08/09/2016] [Accepted: 08/10/2016] [Indexed: 01/21/2023]
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41
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Wang Y, Zhong Y, Wang Q, Yang XF, Li Z, Li H. Ratiometric Fluorescent Probe for Vicinal Dithiol-Containing Proteins in Living Cells Designed via Modulating the Intramolecular Charge Transfer–Twisted Intramolecular Charge Transfer Conversion Process. Anal Chem 2016; 88:10237-10244. [DOI: 10.1021/acs.analchem.6b02923] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yuanyuan Wang
- Key
Laboratory of Synthetic and Natural Functional Molecule Chemistry
of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an, Shaanxi 710127, P. R. China
| | - Yaogang Zhong
- College
of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, P. R. China
| | - Qin Wang
- Key
Laboratory of Synthetic and Natural Functional Molecule Chemistry
of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an, Shaanxi 710127, P. R. China
| | - Xiao-Feng Yang
- Key
Laboratory of Synthetic and Natural Functional Molecule Chemistry
of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an, Shaanxi 710127, P. R. China
| | - Zheng Li
- College
of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, P. R. China
| | - Hua Li
- Key
Laboratory of Synthetic and Natural Functional Molecule Chemistry
of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an, Shaanxi 710127, P. R. China
- College
of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an, Shaanxi 710065, P. R. China
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Han J, Zhang H, Wang S, Zhou J, Luo Y, Long LH, Hu ZL, Wang F, Chen JG, Wu PF. Potentiation of Surface Stability of AMPA Receptors by Sulfhydryl Compounds: A Redox-Independent Effect by Disrupting Palmitoylation. Neurochem Res 2016; 41:2890-2903. [PMID: 27426946 DOI: 10.1007/s11064-016-2006-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/04/2016] [Accepted: 07/12/2016] [Indexed: 02/07/2023]
Abstract
Sulfhydryl compounds such as dithiothreitol (DTT) and β-mercaptoethanol (β-ME) are widely used as redox agents. Previous studies in our group and other laboratory have reported the effect of sulfhydryl compounds on the function of glutamate receptor, including plasticity. Most of these findings have focused on the N-methyl-D-aspartic acid receptor, in contrast, very little is known about the effect of sulfhydryl compounds on α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptor (AMPAR). Here, we observed that DTT (100 μM), β-ME (200 μM) and L-cysteine (200 μM) significantly elevated the surface expression of AMPARs via reducing their palmitoylation in rat hippocampal slices in vitro. Increased surface stability of AMPARs was not be correlated with the altered redox status, because the chemical entities containing mercapto group such as penicillamine (200 μM) and 2-mercapto-1-methylimidazole (200 μM) exhibited little effects on the surface expression of AMPARs. Computing results of Asp-His-His-Cys (DHHC) 3, the main enzyme for palmitoylation of AMPARs, indicated that only the alkyl mercaptans with chain-like configuration, such as DTT and β-ME, can enter the pocket of DHHC3 and disrupt the catalytic activity via inhibiting DHHC3 auto-palmitoylation. Collectively, our findings indicate a novel redox-independent mechanism underlay the multiple effects of thiol reductants on synaptic function.
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Affiliation(s)
- Jun Han
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Hai Zhang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Sheng Wang
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jun Zhou
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Yi Luo
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Li-Hong Long
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China.,Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, 430030, Hubei, China.,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, 430030, Hubei, China.,Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Zhuang-Li Hu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China.,Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, 430030, Hubei, China.,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, 430030, Hubei, China.,Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China.,Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, 430030, Hubei, China.,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, 430030, Hubei, China.,Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China.,Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, 430030, Hubei, China.,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, 430030, Hubei, China.,Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Peng-Fei Wu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China. .,Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, 430030, Hubei, China. .,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, 430030, Hubei, China. .,Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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Aljuffali IA, Lin CF, Chen CH, Fang JY. The codrug approach for facilitating drug delivery and bioactivity. Expert Opin Drug Deliv 2016; 13:1311-25. [DOI: 10.1080/17425247.2016.1187598] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ibrahim A. Aljuffali
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Chwan-Fwu Lin
- Department of Cosmetic Science, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Chun-Han Chen
- Division of General Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jia-You Fang
- Pharmaceutics Laboratory, Graduate Institute of Natural Products, Chang Gung University, Taoyuan, Taiwan
- Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
- Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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Methylmercury alters glutathione homeostasis by inhibiting glutaredoxin 1 and enhancing glutathione biosynthesis in cultured human astrocytoma cells. Toxicol Lett 2016; 256:1-10. [PMID: 27180086 DOI: 10.1016/j.toxlet.2016.05.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 04/28/2016] [Accepted: 05/11/2016] [Indexed: 02/08/2023]
Abstract
Methylmercury (MeHg) is a neurotoxin that binds strongly to thiol residues on protein and low molecular weight molecules like reduced glutathione (GSH). The mechanism of its effects on GSH homeostasis particularly at environmentally relevant low doses is not fully known. We hypothesized that exposure to MeHg would lead to a depletion of reduced glutathione (GSH) and an accumulation of glutathione disulfide (GSSG) leading to alterations in S-glutathionylation of proteins. Our results showed exposure to low concentrations of MeHg (1μM) did not significantly alter GSH levels but increased GSSG levels by ∼12-fold. This effect was associated with a significant increase in total cellular glutathione content and a decrease in GSH/GSSG. Immunoblot analyses revealed that proteins involved in glutathione synthesis were upregulated accounting for the increase in cellular glutathione. This was associated an increase in cellular Nrf2 protein levels which is required to induce the expression of antioxidant genes in response to cellular stress. Intriguingly, we noted that a key enzyme involved in reversing protein S-glutathionylation and maintaining glutathione homeostasis, glutaredoxin-1 (Grx1), was inhibited by ∼50%. MeHg treatment also increased the S-glutathionylation of a high molecular weight protein. This observation is consistent with the inhibition of Grx1 and elevated H2O2 production however; contrary to our original hypothesis we found few S-glutathionylated proteins in the astrocytoma cells. Collectively, MeHg affects multiple arms of glutathione homeostasis ranging from pool management to protein S-glutathionylation and Grx1 activity.
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45
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Park MH, Jo M, Kim YR, Lee CK, Hong JT. Roles of peroxiredoxins in cancer, neurodegenerative diseases and inflammatory diseases. Pharmacol Ther 2016; 163:1-23. [PMID: 27130805 PMCID: PMC7112520 DOI: 10.1016/j.pharmthera.2016.03.018] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/22/2016] [Indexed: 12/29/2022]
Abstract
Peroxiredoxins (PRDXs) are antioxidant enzymes, known to catalyze peroxide reduction to balance cellular hydrogen peroxide (H2O2) levels, which are essential for cell signaling and metabolism and act as a regulator of redox signaling. Redox signaling is a critical component of cell signaling pathways that are involved in the regulation of cell growth, metabolism, hormone signaling, immune regulation and variety of other physiological functions. Early studies demonstrated that PRDXs regulates cell growth, metabolism and immune regulation and therefore involved in the pathologic regulator or protectant of several cancers, neurodegenerative diseases and inflammatory diseases. Oxidative stress and antioxidant systems are important regulators of redox signaling regulated diseases. In addition, thiol-based redox systems through peroxiredoxins have been demonstrated to regulate several redox-dependent process related diseases. In this review article, we will discuss recent findings regarding PRDXs in the development of diseases and further discuss therapeutic approaches targeting PRDXs. Moreover, we will suggest that PRDXs could be targets of several diseases and the therapeutic agents for targeting PRDXs may have potential beneficial effects for the treatment of cancers, neurodegenerative diseases and inflammatory diseases. Future research should open new avenues for the design of novel therapeutic approaches targeting PRDXs.
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Affiliation(s)
- Mi Hee Park
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungbuk, Republic of Korea, 361-951
| | - MiRan Jo
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungbuk, Republic of Korea, 361-951
| | - Yu Ri Kim
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungbuk, Republic of Korea, 361-951
| | - Chong-Kil Lee
- College of Pharmacy and Medical Research Center, Chungbuk National University, 12 Gaesin-dong, Heungduk-gu, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungbuk, Republic of Korea, 361-951.
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Bhattacharjee N, Paul R, Giri A, Borah A. Chronic exposure of homocysteine in mice contributes to dopamine loss by enhancing oxidative stress in nigrostriatum and produces behavioral phenotypes of Parkinson's disease. Biochem Biophys Rep 2016; 6:47-53. [PMID: 28955861 PMCID: PMC5600271 DOI: 10.1016/j.bbrep.2016.02.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 02/19/2016] [Accepted: 02/23/2016] [Indexed: 12/21/2022] Open
Abstract
Increased homocysteine (Hcy) level has been implicated as an independent risk factor for various neurological disorders, including Parkinson’s disease (PD). Hcy has been reported to cause dopaminergic neuronal loss in rodents and causes the behavioral abnormalities. This study is an attempt to investigate molecular mechanisms underlying Hcy-induced dopaminergic neurotoxicity after its chronic systemic administration. Male Swiss albino mice were injected with different doses of Hcy (100 and 250 mg/kg; intraperitoneal) for 60 days. Animals subjected to higher doses of Hcy, but not the lower dose, produces motor behavioral abnormalities with significant dopamine depletion in the striatum. Significant inhibition of mitochondrial complex-I activity in nigra with enhanced activity of antioxidant enzymes in the nigrostriatum have highlighted the involvement of Hcy-induced oxidative stress. While, chronic exposure to Hcy neither significantly alters the nigrostriatal glutathione level nor it causes any visible change in tyrosine hydroxylase-immunoreactivity of dopaminergic neurons. The finding set us to hypothesize that the mild oxidative stress due to prolonged Hcy exposure to mice is conducive to striatal dopamine depletion leading to behavioral abnormalities similar to that observed in PD. Chronic intraperitoneal Hcy injection causes parkinsonian like motor abnormalities. Hcy injection caused complex-I inhibition in nigra and striatal dopamine depletion. Hcy injection caused enhanced activity of antioxidant enzymes in nigrostriatum. Hcy-induced mild oxidative stress is not sufficient to alter GSH and TH.
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Affiliation(s)
- Nivedita Bhattacharjee
- Cellular and Molecular Neurobiology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar 788011, Assam, India
| | - Rajib Paul
- Cellular and Molecular Neurobiology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar 788011, Assam, India
| | - Anirudha Giri
- Environmental Toxicology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar 788011, Assam, India
| | - Anupom Borah
- Cellular and Molecular Neurobiology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar 788011, Assam, India
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Patil J, Matte A, Nissbrandt H, Mallard C, Sandberg M. Sustained Effects of Neonatal Systemic Lipopolysaccharide on IL-1β and Nrf2 in Adult Rat Substantia Nigra Are Partly Normalized by a Spirulina-Enriched Diet. Neuroimmunomodulation 2016; 23:250-259. [PMID: 27931028 PMCID: PMC5266664 DOI: 10.1159/000452714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 10/19/2016] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND/AIM Neonatal infection can sensitize the adult substantia nigra (SN) to secondary insults, causing a decrease in antioxidant capacity which may lead to Parkinson's disease in adults. We studied the prolonged effect of systemic infection by (i.p.) administration of lipopolysaccharide (LPS) on interleukin (IL)-1β, the antioxidant regulator nuclear factor-erythroid 2-related factor 2 (Nrf2), and the peroxisome proliferator-activated receptor γ coactivator (PGC)-1α in rat SN. METHOD AND RESULTS Five-day-old rat pups were treated with LPS (i.p. 2 mg/kg). After 65 days, the mRNA level of IL-1β was significantly increased, in parallel with a decrease in that of the rate-limiting enzyme in glutathione synthesis, the γ-glutamylcysteine ligase catalytic subunit (γGCLc), Nrf2, and brain-derived neurotrophic factor (BDNF). Protein levels of γGCLc and Nrf2 were decreased while IL-1β protein was significantly increased. These LPS-induced long-term changes correlated with a decrease in phosphorylated (active) AKT (pAKT) and phosphorylated (inactive) GSK-3β (pGSK-3β). In another set of experiments, a 0.1% Spirulina-containing diet was given to lactating mothers 24 h before the LPS treatment of the pups. The Spirulina-supplemented diet decreased IL-1β protein expression in SN and elevated the mRNA level of γGCLc, Nrf2 protein, PGC-1α protein, and pAKT. CONCLUSION Early-life infection can negatively affect Nrf2, pAKT, and pGSK-3β for a long time in SN. A diet enriched with antioxidant and anti-inflammatory phytochemicals can partly restore some, but not all, of the effects on the antioxidant defense, possibly via normalizing effects on pAKT.
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Affiliation(s)
- Jaspal Patil
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Sweden
| | - Ashok Matte
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Sweden
| | - Hans Nissbrandt
- Department of Pharmacology, Institute of Neuroscience and Physiology, University of Gothenburg, Sweden
| | - Carina Mallard
- Department of Physiology, Institute of Neuroscience and Physiology, University of Gothenburg, Sweden
| | - Mats Sandberg
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Sweden
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Protein S-glutathionlyation links energy metabolism to redox signaling in mitochondria. Redox Biol 2015; 8:110-8. [PMID: 26773874 PMCID: PMC4731959 DOI: 10.1016/j.redox.2015.12.010] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 12/29/2015] [Indexed: 12/17/2022] Open
Abstract
At its core mitochondrial function relies on redox reactions. Electrons stripped from nutrients are used to form NADH and NADPH, electron carriers that are similar in structure but support different functions. NADH supports ATP production but also generates reactive oxygen species (ROS), superoxide (O2·-) and hydrogen peroxide (H2O2). NADH-driven ROS production is counterbalanced by NADPH which maintains antioxidants in an active state. Mitochondria rely on a redox buffering network composed of reduced glutathione (GSH) and peroxiredoxins (Prx) to quench ROS generated by nutrient metabolism. As H2O2 is quenched, NADPH is expended to reactivate antioxidant networks and reset the redox environment. Thus, the mitochondrial redox environment is in a constant state of flux reflecting changes in nutrient and ROS metabolism. Changes in redox environment can modulate protein function through oxidation of protein cysteine thiols. Typically cysteine oxidation is considered to be mediated by H2O2 which oxidizes protein thiols (SH) forming sulfenic acid (SOH). However, problems begin to emerge when one critically evaluates the regulatory function of SOH. Indeed SOH formation is slow, non-specific, and once formed SOH reacts rapidly with a variety of molecules. By contrast, protein S-glutathionylation (PGlu) reactions involve the conjugation and removal of glutathione moieties from modifiable cysteine residues. PGlu reactions are driven by fluctuations in the availability of GSH and oxidized glutathione (GSSG) and thus should be exquisitely sensitive to changes ROS flux due to shifts in the glutathione pool in response to varying H2O2 availability. Here, we propose that energy metabolism-linked redox signals originating from mitochondria are mediated indirectly by H2O2 through the GSH redox buffering network in and outside mitochondria. This proposal is based on several observations that have shown that unlike other redox modifications PGlu reactions fulfill the requisite criteria to serve as an effective posttranslational modification that controls protein function. Mitochondria employ redox buffering networks to regulate bioenergetics. PGlu reactions link energy/nutrient metabolism to redox signaling. Other redox modifications lack regulatory features.
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Gensenoside Rb1 protects rat PC12 cells from oxidative stress-induced endoplasmic reticulum stress: the involvement of thioredoxin-1. Mol Cell Biochem 2015; 410:239-46. [PMID: 26346161 DOI: 10.1007/s11010-015-2557-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 09/03/2015] [Indexed: 10/23/2022]
Abstract
Oxidative stress plays an important role in many diseases and hydrogen peroxide (H2O2) plays a central role in the stress. Gensenoside Rb1 is the one of active ingredients in the traditional Chinese medicine Panax notoginseng. It has been reported that gensenoside Rb1 possesses various pharmacological activities. Here we report that gensenoside Rb1 exhibits potent protective effects against oxidative injury induced by H2O2 through inhibiting endoplasmic reticulum stress in PC12 cells. Cell viability assay demonstrated that incubation with H2O2 for 24 h led to a significant loss of cultured rat PC12 cells, and the cell viability was pronouncedly increased by pretreatment of gensenoside Rb1 for 24 h. H2O2-induced endoplasmic reticulum stress pathway was also suppressed after gensenoside Rb1 pretreatment, which was related with thioredoxin-1 (Trx-1) induction. Trx-1 siRNA abolished the protective effects of gensenoside Rb1. Our results of the present study demonstrate that gensenoside Rb1 shows a potent anti-oxidative effect on cultured PC12 cells by inducing Trx-1 expression.
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Wang YQ, Wang MY, Fu XR, Peng-Yu, Gao GF, Fan YM, Duan XL, Zhao BL, Chang YZ, Shi ZH. Neuroprotective effects of ginkgetin against neuroinjury in Parkinson's disease model induced by MPTP via chelating iron. Free Radic Res 2015; 49:1069-80. [DOI: 10.3109/10715762.2015.1032958] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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