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Schmalhausen EV, Medvedeva MV, Muronetz VI. Glyceraldehyde-3-phosphate dehydrogenase is involved in the pathogenesis of Alzheimer's disease. Arch Biochem Biophys 2024; 758:110065. [PMID: 38906311 DOI: 10.1016/j.abb.2024.110065] [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: 05/02/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 06/23/2024]
Abstract
One of important characteristics of Alzheimer's disease is a persistent oxidative/nitrosative stress caused by pro-oxidant properties of amyloid-beta peptide (Aβ) and chronic inflammation in the brain. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is easily oxidized under oxidative stress. Numerous data indicate that oxidative modifications of GAPDH in vitro and in cell cultures stimulate GAPDH denaturation and aggregation, and the catalytic cysteine residue Cys152 is important for these processes. Both intracellular and extracellular GAPDH aggregates are toxic for the cells. Interaction of denatured GAPDH with soluble Aβ results in mixed insoluble aggregates with increased toxicity. The above-described properties of GAPDH (sensitivity to oxidation and propensity to form aggregates, including mixed aggregates with Aβ) determine its role in the pathogenesis of Alzheimer's disease.
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Affiliation(s)
- E V Schmalhausen
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, Bld 40, 119991, Moscow, Russia.
| | - M V Medvedeva
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Leninskie Gory 1, Bld 73, 119991, Moscow, Russia
| | - V I Muronetz
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, Bld 40, 119991, Moscow, Russia; Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Leninskie Gory 1, Bld 73, 119991, Moscow, Russia
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2
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Holbrook OT, Molligoda B, Bushell KN, Gobrogge KL. Behavioral consequences of the downstream products of ethanol metabolism involved in alcohol use disorder. Neurosci Biobehav Rev 2021; 133:104501. [PMID: 34942269 DOI: 10.1016/j.neubiorev.2021.12.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 12/08/2021] [Accepted: 12/12/2021] [Indexed: 01/04/2023]
Abstract
Research concerning Alcohol Use Disorder (AUD) has previously focused primarily on either the behavioral or chemical consequences experienced following ethanol intake, but these areas of research have rarely been considered in tandem. Compared with other drugs of abuse, ethanol has been shown to have a unique metabolic pathway once it enters the body, which leads to the formation of downstream metabolites which can go on to form biologically active products. These metabolites can mediate a variety of behavioral responses that are commonly observed with AUD, such as ethanol intake, reinforcement, and vulnerability to relapse. The following review considers the preclinical and chemical research implicating these downstream products in AUD and proposes a chemobehavioral model of AUD.
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Affiliation(s)
- Otto T Holbrook
- Program in Neuroscience, Boston University, Boston, MA, 02215-2425, USA.
| | - Brandon Molligoda
- Program in Neuroscience, Boston University, Boston, MA, 02215-2425, USA.
| | - Kristen N Bushell
- Program in Neuroscience, Boston University, Boston, MA, 02215-2425, USA
| | - Kyle L Gobrogge
- Program in Neuroscience, Boston University, Boston, MA, 02215-2425, USA
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Modulation of SOD3 Levels Is Detrimental to Retinal Homeostasis. Antioxidants (Basel) 2021; 10:antiox10101595. [PMID: 34679728 PMCID: PMC8533566 DOI: 10.3390/antiox10101595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 01/08/2023] Open
Abstract
Retinal oxidative stress is a common secondary feature of many retinal diseases. Though it may not be the initial insult, it is a major contributor to the pathogenesis of highly prevalent retinal dystrophic diseases like macular degeneration, diabetic retinopathy, and retinitis pigmentosa. We explored the role of superoxide dismutase 3 (SOD3) in retinal homeostasis since SOD3 protects the extracellular matrix (ECM) from oxidative injury. We show that SOD3 is mainly extracellularly localized and is upregulated as a result of environmental and pathogenic stress. Ablation of SOD3 resulted in reduced functional electroretinographic responses and number of photoreceptors, which is exacerbated with age. By contrast, overexpression showed increased electroretinographic responses and increased number of photoreceptors at young ages, but appears deleterious as the animal ages, as determined from the associated functional decline. Our exploration shows that SOD3 is vital to retinal homeostasis but its levels are tightly regulated. This suggests that SOD3 augmentation to combat oxidative stress during retinal degenerative changes may only be effective in the short-term.
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Glyceraldehyde-3-Phosphate Dehydrogenase Restricted in Cytoplasmic Location by Viral GP5 Facilitates Porcine Reproductive and Respiratory Syndrome Virus Replication via Its Glycolytic Activity. J Virol 2021; 95:e0021021. [PMID: 34160254 DOI: 10.1128/jvi.00210-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is one of the most important endemic swine pathogens, causing enormous losses in the global swine industry. Commercially available vaccines only partially prevent or counteract the virus infection and correlated losses. PRRSV's replication mechanism has not been well understood. In this study, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) was screened to bind with the viral major envelope glycoprotein 5 (GP5) after PRRSV infection. The interacting sites are located within a 13-amino-acid (aa) region (aa 93 to 105) of GP5 and at Lys227 of GAPDH. Interestingly, viral GP5 restricts the translocation of GAPDH from the cytoplasm to the nucleus. Moreover, cytoplasmic GAPDH facilitates PRRSV replication by virtue of its glycolytic activity. The results suggest that PRRSV GP5 restricts GAPDH to the nucleus and exploits its glycolytic activity to stimulate virus replication. The data provide insight into the role of GAPDH in PRRSV replication and reveal a potential target for controlling viral infection. IMPORTANCE PRRSV poses a severe economic threat to the pig industry. PRRSV GP5, the major viral envelope protein, plays an important role in viral infection, pathogenicity, and immunity. However, interactions between GP5 and host proteins have not yet been well studied. Here, we show that GAPDH interacts with GP5 through binding a 13-aa sequence (aa 93 to 105) in GP5, while GP5 interacts with GAPDH at the K277 amino acid residue of GAPDH. We demonstrate that GP5 interacts with GAPDH in the cytoplasm during PPRSV infection, inhibiting GAPDH entry into the nucleus. PRRSV exploits the glycolytic activity of GAPDH to promote viral replication. These results enrich our understanding of PRRSV infection and pathogenesis and open a new avenue for antiviral prevention and PRRSV treatment strategies.
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Sakaguchi M, Nishiuchi R, Bando M, Yamada Y, Kondo R, Mitsumori M, Shiokawa A, Kanazawa M, Ikeguchi S, Kikyo F, Tanaka S. Prolyl oligopeptidase participates in the cytosine arabinoside-induced nuclear translocation of glyceraldehyde 3-phosphate dehydrogenase in a human neuroblastoma cell line. Biochem Biophys Res Commun 2021; 572:65-71. [PMID: 34358965 DOI: 10.1016/j.bbrc.2021.07.094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/29/2022]
Abstract
Previously, we reported that glyceraldehyde 3-phosphate dehydrogenase (GAPDH) is a binding partner of prolyl oligopeptidase (POP) in neuroblastoma NB-1 cells and that the POP inhibitor, SUAM-14746, inhibits cytosine arabinoside (Ara-C)-induced nuclear translocation of GAPDH and protects against Ara-C cytotoxicity. To carry out a more in-depth analysis of the interaction between POP and GAPDH, we generated POP-KO NB-1 cells and compared the nuclear translocation of GAPDH after Ara-C with or without SUAM-14746 treatment to wild-type NB-1 cells by western blotting and fluorescence immunostaining. Ara-C did not induce the nuclear translocation of GAPDH and SUAM-14746 did not protect against Ara-C cytotoxicity in POP-KO cells. These results indicate that the anticancer effects of Ara-C not only include the commonly known antimetabolic effects, but also the induction of cell death by nuclear transfer of GAPDH through interaction with POP.
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Affiliation(s)
- Minoru Sakaguchi
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan.
| | - Ryota Nishiuchi
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Mika Bando
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Yui Yamada
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Rie Kondo
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Mika Mitsumori
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Ai Shiokawa
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Miyuki Kanazawa
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Shiori Ikeguchi
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Fumi Kikyo
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Satoshi Tanaka
- Laboratory of Cell Biology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
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Sun X, Hong Y, Shu Y, Wu C, Ye G, Chen H, Zhou H, Gao R, Zhang J. The involvement of Parkin-dependent mitophagy in the anti-cancer activity of Ginsenoside. J Ginseng Res 2021; 46:266-274. [PMID: 35509820 PMCID: PMC9058836 DOI: 10.1016/j.jgr.2021.06.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 01/03/2023] Open
Abstract
Colon cancer, the third most frequent occurred cancer, has high mortality and extremely poor prognosis. Ginsenoside, the active components of traditional Chinese herbal medicine Panax ginseng, exerts antitumor effect in various cancers, including colon cancer. However, the detailed molecular mechanism of Ginsenoside in the tumor suppression have not been fully elucidated. Here, we chose the representative ginsenoside Rg3 and reported for the first time that Rg3 induces mitophagy in human colon cancer cells, which is responsible for its anticancer effect. Rg3 treatment leads to mitochondria damage and the formation of mitophagosome; when autophagy is inhibited, the clearance of damaged mitochondria can be reversed. Next, our results showed that Rg3 treatment activates the PINK1-Parkin signaling pathway and recruits Parkin and ubiquitin proteins to mitochondria to induce mitophagy. GO analysis of Parkin targets showed that Parkin interacts with a large number of mitochondrial proteins and regulates the molecular function of mitochondria. The cellular energy metabolism enzyme GAPDH is validated as a novel substrate of Parkin, which is ubiquitinated by Parkin. Moreover, GAPDH participates in the Rg3-induced mitophagy and regulates the translocation of Parkin to mitochondria. Functionally, Rg3 exerts the inhibitory effect through regulating the nonglycolytic activity of GAPDH, which could be associated with the cellular oxidative stress. Thus, our results revealed GAPDH ubiquitination by Parkin as a crucial mechanism for mitophagy induction that contributes to the tumor-suppressive function of ginsenoside, which could be a novel treatment strategy for colon cancer.
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Affiliation(s)
- Xin Sun
- Department of Oncology, Cancer Center of Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College, Hangzhou, China
| | | | - Yuhan Shu
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Caixia Wu
- Clinical Research Institute, Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, People’s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Guiqin Ye
- Hangzhou Medical College, Hangzhou, China
| | | | - Hongying Zhou
- Department of Oncology, Cancer Center of Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Ruilan Gao
- Institution of Hematology Research, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- Corresponding author. Institution of Hematology Research, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.
| | - Jianbin Zhang
- Clinical Research Institute, Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, People’s Hospital of Hangzhou Medical College, Hangzhou, China
- Corresponding author. Clinical Research Institute, Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, People’s Hospital of Hangzhou Medical College, Hangzhou, 310014, China.
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Muronetz VI, Melnikova AK, Saso L, Schmalhausen EV. Influence of Oxidative Stress on Catalytic and Non-glycolytic Functions of Glyceraldehyde-3-phosphate Dehydrogenase. Curr Med Chem 2020; 27:2040-2058. [PMID: 29848267 DOI: 10.2174/0929867325666180530101057] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Glyceraldehyde-3-phosphate Dehydrogenase (GAPDH) is a unique enzyme that, besides its main function in glycolysis (catalysis of glyceraldehyde-3-phosphate oxidation), possesses a number of non-glycolytic activities. The present review summarizes information on the role of oxidative stress in the regulation of the enzymatic activity as well as non-glycolytic functions of GAPDH. METHODS Based on the analysis of literature data and the results obtained in our research group, mechanisms of the regulation of GAPDH functions through the oxidation of the sulfhydryl groups in the active site of the enzyme have been suggested. RESULTS Mechanism of GAPDH oxidation includes consecutive oxidation of the catalytic Cysteine (Cys150) into sulfenic, sulfinic, and sulfonic acid derivatives, resulting in the complete inactivation of the enzyme. The cysteine sulfenic acid reacts with reduced glutathione (GSH) to form a mixed disulfide (S-glutathionylated GAPDH) that further reacts with Cys154 yielding the disulfide bond in the active site of the enzyme. In contrast to the sulfinic and sulfonic acids, the mixed disulfide and the intramolecular disulfide bond are reversible oxidation products that can be reduced in the presence of GSH or thioredoxin. CONCLUSION Oxidation of sulfhydryl groups in the active site of GAPDH is unavoidable due to the enhanced reactivity of Cys150. The irreversible oxidation of Cys150 is prevented by Sglutathionylation and disulfide bonding with Cys154. The oxidation/reduction of the sulfhydryl groups in the active site of GAPDH can be used for regulation of glycolysis and numerous side activities of this enzyme including the induction of apoptosis.
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Affiliation(s)
- Vladimir I Muronetz
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Aleksandra K Melnikova
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer"Sapienza, University of Rome, Rome, Italy
| | - Elena V Schmalhausen
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation
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8
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Sekar S, Taghibiglou C. Nuclear accumulation of GAPDH, GluA2 and p53 in post-mortem substantia nigral region of patients with Parkinson’s disease. Neurosci Lett 2020; 716:134641. [DOI: 10.1016/j.neulet.2019.134641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/15/2019] [Accepted: 11/19/2019] [Indexed: 11/25/2022]
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9
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Silva EM, Conde JN, Allonso D, Ventura GT, Coelho DR, Carneiro PH, Silva ML, Paes MV, Rabelo K, Weissmuller G, Bisch PM, Mohana-Borges R. Dengue virus nonstructural 3 protein interacts directly with human glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and reduces its glycolytic activity. Sci Rep 2019; 9:2651. [PMID: 30804377 PMCID: PMC6389977 DOI: 10.1038/s41598-019-39157-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 01/16/2019] [Indexed: 12/29/2022] Open
Abstract
Dengue is an important mosquito-borne disease and a global public health problem. The disease is caused by dengue virus (DENV), which is a member of the Flaviviridae family and contains a positive single-stranded RNA genome that encodes a single precursor polyprotein that is further cleaved into structural and non-structural proteins. Among these proteins, the non-structural 3 (NS3) protein is very important because it forms a non-covalent complex with the NS2B cofactor, thereby forming the functional viral protease. NS3 also contains a C-terminal ATPase/helicase domain that is essential for RNA replication. Here, we identified 47 NS3-interacting partners using the yeast two-hybrid system. Among those partners, we highlight several proteins involved in host energy metabolism, such as apolipoprotein H, aldolase B, cytochrome C oxidase and glyceraldehyde-3-phosphate dehydrogenase (GAPDH). GAPDH directly binds full-length NS3 and its isolated helicase and protease domains. Moreover, we observed an intense colocalization between the GAPDH and NS3 proteins in DENV2-infected Huh7.5.1 cells, in NS3-transfected BHK-21 cells and in hepatic tissue from a fatal dengue case. Taken together, these results suggest that the human GAPDH-DENV NS3 interaction is involved in hepatic metabolic alterations, which may contribute to the appearance of steatosis in dengue-infected patients. The interaction between GAPDH and full-length NS3 or its helicase domain in vitro as well as in NS3-transfected cells resulted in decreased GAPDH glycolytic activity. Reduced GAPDH glycolytic activity may lead to the accumulation of metabolic intermediates, shifting metabolism to alternative, non-glycolytic pathways. This report is the first to identify the interaction of the DENV2 NS3 protein with the GAPDH protein and to demonstrate that this interaction may play an important role in the molecular mechanism that triggers hepatic alterations.
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Affiliation(s)
- Emiliana M Silva
- Laboratório de Genômica Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Jonas N Conde
- Laboratório de Genômica Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Diego Allonso
- Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gustavo T Ventura
- Laboratório de Genômica Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Diego R Coelho
- Laboratório de Genômica Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Pedro Henrique Carneiro
- Laboratório de Genômica Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Manuela L Silva
- Instituto de Biodiversidade e Sustentabilidade (NUPEM/UFRJ), Universidade Federal do Rio de Janeiro, Macaé, RJ, Brazil
| | - Marciano V Paes
- Laboratório Interdisciplinar de Pesquisa Médica, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Kíssila Rabelo
- Laboratório de Ultraestrutura e Biologia Tecidual, Universidade Estadual do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gilberto Weissmuller
- Laboratório de Física Biológica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Paulo Mascarello Bisch
- Laboratório de Física Biológica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Ronaldo Mohana-Borges
- Laboratório de Genômica Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil.
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Abstract
Deprenyl, a monoamine oxidase inhibitor used in the treatment of Parkinson's disease, along with its primary metabolite desmethyldeprenyl (DES) have been shown to reduce neuronal apoptosis by a mechanism that requires gene transcription and involves the maintenance of mitochondrial membrane potential. This review article explores the mechanisms by which DES maintains mitochondrial membrane potential. Mediated by GAPDH binding, DES increases mitochondrial BCL-2 and BCL-xL levels and decreases BAX levels thereby preventing the permeability transition pore (PTP) form opening and preventing apoptotic degradation. The favorable effects of deprenyl on neuronal apoptosis suggests the therapeutic potential of designing compounds with the capacity to alter the configurations of pro-apoptosis or anti-apoptotic proteins.
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Affiliation(s)
- W G Tatton
- Department of Neurology, Mount Sinai School of Medicine, New York, NY, USA.
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Barinova K, Eldarov M, Khomyakova E, Muronetz V, Schmalhausen E. Isolation of recombinant human untagged glyceraldehyde-3-phosphate dehydrogenase from E. coli producer strain. Protein Expr Purif 2017. [DOI: 10.1016/j.pep.2017.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Morris G, Walder K, Carvalho AF, Tye SJ, Lucas K, Berk M, Maes M. The role of hypernitrosylation in the pathogenesis and pathophysiology of neuroprogressive diseases. Neurosci Biobehav Rev 2017; 84:453-469. [PMID: 28789902 DOI: 10.1016/j.neubiorev.2017.07.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 07/02/2017] [Accepted: 07/31/2017] [Indexed: 12/12/2022]
Abstract
There is a wealth of data indicating that de novo protein S-nitrosylation in general and protein transnitrosylation in particular mediates the bulk of nitric oxide signalling. These processes enable redox sensing and facilitate homeostatic regulation of redox dependent protein signalling, function, stability and trafficking. Increased S-nitrosylation in an environment of increasing oxidative and nitrosative stress (O&NS) is initially a protective mechanism aimed at maintaining protein structure and function. When O&NS becomes severe, mechanisms governing denitrosylation and transnitrosylation break down leading to the pathological state referred to as hypernitrosylation (HN). Such a state has been implicated in the pathogenesis and pathophysiology of several neuropsychiatric and neurodegenerative diseases and we investigate its potential role in the development and maintenance of neuroprogressive disorders. In this paper, we propose a model whereby the hypernitrosylation of a range of functional proteins and enzymes lead to changes in activity which conspire to produce at least some of the core abnormalities contributing to the development and maintenance of pathology in these illnesses.
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Affiliation(s)
- Gerwyn Morris
- Tir Na Nog, Bryn Road seaside 87, Llanelli, SA152LW, Wales, United Kingdom
| | - Ken Walder
- Deakin University, The Centre for Molecular and Medical Research, School of Medicine, P.O. Box 291, Geelong, 3220, Australia
| | - André F Carvalho
- Department of Clinical Medicine and Translational Psychiatry Research Group, Faculty of Medicine, Federal University of Ceará, 60430-040, Fortaleza, CE, Brazil
| | - Susannah J Tye
- Deakin University, The Centre for Molecular and Medical Research, School of Medicine, P.O. Box 291, Geelong, 3220, Australia; Department of Clinical Medicine and Translational Psychiatry Research Group, Faculty of Medicine, Federal University of Ceará, 60430-040, Fortaleza, CE, Brazil; Deakin University, IMPACT Strategic Research Centre, School of Medicine, P.O. Box 281, Geelong, 3220, Australia; Orygen Youth Health Research Centre and the Centre of Youth Mental Health, The Florey Institute for Neuroscience and Mental Health and the Department of Psychiatry, University of Melbourne, Parkville, 3052, Australia
| | - Kurt Lucas
- Multiphase Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - Michael Berk
- Deakin University, IMPACT Strategic Research Centre, School of Medicine, P.O. Box 281, Geelong, 3220, Australia; Orygen Youth Health Research Centre and the Centre of Youth Mental Health, The Florey Institute for Neuroscience and Mental Health and the Department of Psychiatry, University of Melbourne, Parkville, 3052, Australia.
| | - Michael Maes
- Deakin University, IMPACT Strategic Research Centre, School of Medicine, P.O. Box 281, Geelong, 3220, Australia; Department of Psychiatry, Chulalongkorn University, Faculty of Medicine, Bangkok, Thailand; Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria
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Muronetz VI, Barinova KV, Stroylova YY, Semenyuk PI, Schmalhausen EV. Glyceraldehyde-3-phosphate dehydrogenase: Aggregation mechanisms and impact on amyloid neurodegenerative diseases. Int J Biol Macromol 2017; 100:55-66. [DOI: 10.1016/j.ijbiomac.2016.05.066] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 05/16/2016] [Accepted: 05/18/2016] [Indexed: 12/14/2022]
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14
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Kosova AA, Khodyreva SN, Lavrik OI. Role of Glyceraldehyde-3-Phosphate Dehydrogenase (GAPDH) in DNA Repair. BIOCHEMISTRY (MOSCOW) 2017; 82:643-654. [PMID: 28601074 DOI: 10.1134/s0006297917060013] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is widely known as a glycolytic enzyme. Nevertheless, various functions of GAPDH have been found that are unrelated to glycolysis. Some of these functions presume interaction of GAPDH with DNA, but the mechanism of its translocation to the nucleus is not fully understood. When in the nucleus, GAPDH participates in the initiation of apoptosis and transcription of genes involved in antiapoptotic pathways and cell proliferation and plays a role in the regulation of telomere length. Several authors have shown that GAPDH displays the uracil-DNA glycosylase activity and interacts with some types of DNA damages, such as apurinic/apyrimidinic sites, nucleotide analogs, and covalent DNA adducts with alkylating agents. Moreover, GAPDH can interact with proteins participating in DNA repair, such as APE1, PARP1, HMGB1, and HMGB2. In this review, the functions of GAPDH associated with DNA repair are discussed in detail.
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Affiliation(s)
- A A Kosova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
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15
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Abstract
Aside from its well-established role in glycolysis, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has been shown to possess many key functions in cells. These functions are regulated by protein oligomerization , biomolecular interactions, post-translational modifications , and variations in subcellular localization . Several GAPDH functions and regulatory mechanisms overlap with one another and converge around its role in intermediary metabolism. Several structural determinants of the protein dictate its function and regulation. GAPDH is ubiquitously expressed and is found in all domains of life. GAPDH has been implicated in many diseases, including those of pathogenic, cardiovascular, degenerative, diabetic, and tumorigenic origins. Understanding the mechanisms by which GAPDH can switch between its functions and how these functions are regulated can provide insights into ways the protein can be modulated for therapeutic outcomes.
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Yang X, Bartlett MG. Identification of protein adduction using mass spectrometry: Protein adducts as biomarkers and predictors of toxicity mechanisms. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:652-664. [PMID: 26842586 DOI: 10.1002/rcm.7462] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 11/12/2015] [Accepted: 11/13/2015] [Indexed: 06/05/2023]
Abstract
The determination of protein-xenobiotic adducts using mass spectrometry is an emerging area which allows detailed understanding of the underlying mechanisms involved in toxicity. These approaches can also be used to reveal potential biomarkers of exposure or toxic response. The following review covers studies of protein adducts resulting from exposure to a wide variety of xenobiotics including organophosphates, polycyclic aromatic hydrocarbons, acetaminophen, alkylating agents and other related compounds.
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Affiliation(s)
- Xiangkun Yang
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens, GA, 30602-2352, USA
| | - Michael G Bartlett
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens, GA, 30602-2352, USA
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17
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Suarez S, McCollum GW, Jayagopal A, Penn JS. High Glucose-induced Retinal Pericyte Apoptosis Depends on Association of GAPDH and Siah1. J Biol Chem 2015; 290:28311-28320. [PMID: 26438826 DOI: 10.1074/jbc.m115.682385] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 11/06/2022] Open
Abstract
Diabetic retinopathy (DR) is a leading cause of blindness worldwide, and its prevalence is growing. Current therapies for DR address only the later stages of the disease, are invasive, and have limited effectiveness. Retinal pericyte death is an early pathologic feature of DR. Although it has been observed in diabetic patients and in animal models of DR, the cause of pericyte death remains unknown. A novel pro-apoptotic pathway initiated by the interaction between glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and the E3 ubiquitin ligase, seven in absentia homolog 1 (Siah1), was recently identified in ocular tissues. In this article we examined the involvement of the GAPDH/Siah1 interaction in human retinal pericyte (hRP) apoptosis. HRP were cultured in 5 mm normal glucose, 25 mm l- or d-glucose for 48 h (osmotic control and high glucose treatments, respectively). Siah1 siRNA was used to down-regulate Siah1 expression. TAT-FLAG GAPDH and/or Siah1-directed peptides were used to block GAPDH and Siah1 interaction. Co-immunoprecipitation assays were conducted to analyze the effect of high glucose on the association of GAPDH and Siah1. Apoptosis was measured by Annexin V staining and caspase-3 enzymatic activity assay. High glucose increased Siah1 total protein levels, induced the association between GAPDH and Siah1, and led to GAPDH nuclear translocation. Our findings demonstrate that dissociation of the GAPDH/Siah1 pro-apoptotic complex can block high glucose-induced pericyte apoptosis, widely considered a hallmark feature of DR. Thus, the work presented in this article can provide a foundation to identify novel targets for early treatment of DR.
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Affiliation(s)
- Sandra Suarez
- Departments of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-8808.
| | - Gary W McCollum
- Departments of Ophthalmology and Visual Sciences, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-8808
| | - Ashwath Jayagopal
- Pharma Research and Early Development (pRED), F. Hoffman-La Roche Ltd., Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - John S Penn
- Departments of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-8808; Departments of Ophthalmology and Visual Sciences, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-8808
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18
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Itakura M, Nakajima H, Kubo T, Semi Y, Kume S, Higashida S, Kaneshige A, Kuwamura M, Harada N, Kita A, Azuma YT, Yamaji R, Inui T, Takeuchi T. Glyceraldehyde-3-phosphate Dehydrogenase Aggregates Accelerate Amyloid-β Amyloidogenesis in Alzheimer Disease. J Biol Chem 2015; 290:26072-87. [PMID: 26359500 DOI: 10.1074/jbc.m115.669291] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 11/06/2022] Open
Abstract
Alzheimer disease (AD) is a progressive neurodegenerative disorder characterized by loss of neurons and formation of pathological extracellular deposits induced by amyloid-β peptide (Aβ). Numerous studies have established Aβ amyloidogenesis as a hallmark of AD pathogenesis, particularly with respect to mitochondrial dysfunction. We have previously shown that glycolytic glyceraldehyde-3-phosphate dehydrogenase (GAPDH) forms amyloid-like aggregates upon exposure to oxidative stress and that these aggregates contribute to neuronal cell death. Here, we report that GAPDH aggregates accelerate Aβ amyloidogenesis and subsequent neuronal cell death both in vitro and in vivo. Co-incubation of Aβ40 with small amounts of GAPDH aggregates significantly enhanced Aβ40 amyloidogenesis, as assessed by in vitro thioflavin-T assays. Similarly, structural analyses using Congo red staining, circular dichroism, and atomic force microscopy revealed that GAPDH aggregates induced Aβ40 amyloidogenesis. In PC12 cells, GAPDH aggregates augmented Aβ40-induced cell death, concomitant with disruption of mitochondrial membrane potential. Furthermore, mice injected intracerebroventricularly with Aβ40 co-incubated with GAPDH aggregates exhibited Aβ40-induced pyramidal cell death and gliosis in the hippocampal CA3 region. These observations were accompanied by nuclear translocation of apoptosis-inducing factor and cytosolic release of cytochrome c from mitochondria. Finally, in the 3×Tg-AD mouse model of AD, GAPDH/Aβ co-aggregation and mitochondrial dysfunction were consistently detected in an age-dependent manner, and Aβ aggregate formation was attenuated by GAPDH siRNA treatment. Thus, this study suggests that GAPDH aggregates accelerate Aβ amyloidogenesis, subsequently leading to mitochondrial dysfunction and neuronal cell death in the pathogenesis of AD.
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Affiliation(s)
- Masanori Itakura
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Hidemitsu Nakajima
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Takeya Kubo
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Yuko Semi
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Satoshi Kume
- the Laboratories of Biological Macromolecules and
| | - Shusaku Higashida
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Akihiro Kaneshige
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Mitsuru Kuwamura
- Laboratory of Veterinary Pathology, Osaka Prefecture University, Osaka 5988531 and
| | - Naoki Harada
- Nutrition Chemistry, Osaka Prefecture University, Osaka 5998531, Japan
| | - Akinori Kita
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Yasu-Taka Azuma
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
| | - Ryoichi Yamaji
- Nutrition Chemistry, Osaka Prefecture University, Osaka 5998531, Japan
| | - Takashi Inui
- the Laboratories of Biological Macromolecules and
| | - Tadayoshi Takeuchi
- From the Laboratory of Veterinary Pharmacology, Graduate School of Life and Environmental Sciences, and
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19
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Kumar D, Kirti PB. Transcriptomic and proteomic analyses of resistant host responses in Arachis diogoi challenged with late leaf spot pathogen, Phaeoisariopsis personata. PLoS One 2015; 10:e0117559. [PMID: 25646800 PMCID: PMC4315434 DOI: 10.1371/journal.pone.0117559] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 12/27/2014] [Indexed: 11/19/2022] Open
Abstract
Late leaf spot is a serious disease of peanut caused by the imperfect fungus, Phaeoisariopsis personata. Wild diploid species, Arachis diogoi. is reported to be highly resistant to this disease and asymptomatic. The objective of this study is to investigate the molecular responses of the wild peanut challenged with the late leaf spot pathogen using cDNA-AFLP and 2D proteomic study. A total of 233 reliable, differentially expressed genes were identified in Arachis diogoi. About one third of the TDFs exhibit no significant similarity with the known sequences in the data bases. Expressed sequence tag data showed that the characterized genes are involved in conferring resistance in the wild peanut to the pathogen challenge. Several genes for proteins involved in cell wall strengthening, hypersensitive cell death and resistance related proteins have been identified. Genes identified for other proteins appear to function in metabolism, signal transduction and defence. Nineteen TDFs based on the homology analysis of genes associated with defence, signal transduction and metabolism were further validated by quantitative real time PCR (qRT-PCR) analyses in resistant wild species in comparison with a susceptible peanut genotype in time course experiments. The proteins corresponding to six TDFs were differentially expressed at protein level also. Differentially expressed TDFs and proteins in wild peanut indicate its defence mechanism upon pathogen challenge and provide initial breakthrough of genes possibly involved in recognition events and early signalling responses to combat the pathogen through subsequent development of resistivity. This is the first attempt to elucidate the molecular basis of the response of the resistant genotype to the late leaf spot pathogen, and its defence mechanism.
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Affiliation(s)
- Dilip Kumar
- Department of Plant Sciences, School of Life Science, University of Hyderabad, Hyderabad, India
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20
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Kohr MJ, Murphy E, Steenbergen C. Glyceraldehyde-3-phosphate dehydrogenase acts as a mitochondrial trans-S-nitrosylase in the heart. PLoS One 2014; 9:e111448. [PMID: 25347796 PMCID: PMC4210263 DOI: 10.1371/journal.pone.0111448] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 10/02/2014] [Indexed: 12/19/2022] Open
Abstract
Mitochondrial proteins have been shown to be common targets of S-nitrosylation (SNO), but the existence of a mitochondrial source of nitric oxide remains controversial. SNO is a nitric oxide-dependent thiol modification that can regulate protein function. Interestingly, trans-S-nitrosylation represents a potential pathway for the import of SNO into the mitochondria. The glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH), which has been shown to act as a nuclear trans-S-nitrosylase, has also been shown to enter mitochondria. However, the function of GAPDH in the mitochondria remains unknown. Therefore, we propose the hypothesis that S-nitrosylated GAPDH (SNO-GAPDH) interacts with mitochondrial proteins as a trans-S-nitrosylase. In accordance with this hypothesis, SNO-GAPDH should be detected in mitochondrial fractions, interact with mitochondrial proteins, and increase mitochondrial SNO levels. Our results demonstrate a four-fold increase in GAPDH levels in the mitochondrial fraction of mouse hearts subjected to ischemic preconditioning, which increases SNO-GAPDH levels. Co-immunoprecipitation studies performed in mouse hearts perfused with the S-nitrosylating agent S-nitrosoglutathione (GSNO), suggest that SNO promotes the interaction of GAPDH with mitochondrial protein targets. The addition of purified SNO-GAPDH to isolated mouse heart mitochondria demonstrated the ability of SNO-GAPDH to enter the mitochondrial matrix, and to increase SNO for many mitochondrial proteins. Further, the overexpression of GAPDH in HepG2 cells increased SNO for a number of different mitochondrial proteins, including heat shock protein 60, voltage-dependent anion channel 1, and acetyl-CoA acetyltransferase, thus supporting the role of GAPDH as a potential mitochondrial trans-S-nitrosylase. In further support of this hypothesis, many of the mitochondrial SNO proteins identified with GAPDH overexpression were no longer detected with GAPDH knock-down or mutation. Therefore, our results suggest that SNO-GAPDH can act as a mitochondrial trans-S-nitrosylase, thereby conferring the transfer of SNO from the cytosol to the mitochondria.
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Affiliation(s)
- Mark J. Kohr
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Systems Biology Center, National Heart Lung and Blood Institute/National Institutes of Health, Bethesda, Maryland, United States of America
| | - Elizabeth Murphy
- Systems Biology Center, National Heart Lung and Blood Institute/National Institutes of Health, Bethesda, Maryland, United States of America
| | - Charles Steenbergen
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
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21
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Jung DW, Kim WH, Seo S, Oh E, Yim SH, Ha HH, Chang YT, Williams DR. Chemical targeting of GAPDH moonlighting function in cancer cells reveals its role in tubulin regulation. ACTA ACUST UNITED AC 2014; 21:1533-45. [PMID: 25308277 DOI: 10.1016/j.chembiol.2014.08.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 08/27/2014] [Accepted: 08/28/2014] [Indexed: 10/24/2022]
Abstract
Glycolytic enzymes are attractive anticancer targets. They also carry out numerous, nonglycolytic "moonlighting" functions in cells. In this study, we investigated the anticancer activity of the triazine small molecule, GAPDS, that targets the glycolytic enzyme glyceraldehyde 3-phosphate dehydrogenase (GAPDH). GAPDS showed greater toxicity against cancer cells compared to a known GAPDH enzyme inhibitor. GAPDS also selectively inhibited cell migration and invasion. Our analysis showed that GAPDS treatment reduced GAPDH levels in the cytoplasm, which would modulate the secondary, moonlighting functions of this enzyme. We then used GAPDS as a probe to demonstrate that a moonlighting function of GAPDH is tubulin regulation, which may explain its anti-invasive properties. We also observed that GAPDS has potent anticancer activity in vivo. Our study indicates that strategies to target the secondary functions of anticancer candidates may yield potent therapeutics and useful chemical probes.
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Affiliation(s)
- Da-Woon Jung
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea
| | - Woong-Hee Kim
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea
| | - Shinae Seo
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea
| | - Eunsang Oh
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea
| | - Soon-Ho Yim
- College of Public Health and Welfare, Dongshin University, 185 Geonjaero, Naju, Jeonnam 520-714, Republic of Korea
| | - Hyung-Ho Ha
- College of Pharmacy, Sunchon National University, Sunchon 570-742, Republic of Korea
| | - Young-Tae Chang
- Department of Chemistry and MedChem Program of Life Sciences Institute, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore; Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A(∗)STAR), Singapore 138667, Singapore
| | - Darren Reece Williams
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea.
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22
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Bui-Nguyen TM, Dennis WE, Jackson DA, Stallings JD, Lewis JA. Detection of Dichlorvos Adducts in a Hepatocyte Cell Line. J Proteome Res 2014; 13:3583-95. [DOI: 10.1021/pr5000076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Tri M. Bui-Nguyen
- Oak Ridge Institute
for Science and Education (ORISE) Postdoctoral Researcher, U.S. Army
Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, Maryland 21702, United States
| | - William E. Dennis
- U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort
Detrick, Maryland 21702, United States
| | - David A. Jackson
- U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort
Detrick, Maryland 21702, United States
| | - Jonathan D. Stallings
- U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort
Detrick, Maryland 21702, United States
| | - John A. Lewis
- U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort
Detrick, Maryland 21702, United States
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23
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Zhai D, Chin K, Wang M, Liu F. Disruption of the nuclear p53-GAPDH complex protects against ischemia-induced neuronal damage. Mol Brain 2014; 7:20. [PMID: 24670206 PMCID: PMC3986870 DOI: 10.1186/1756-6606-7-20] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 02/28/2014] [Indexed: 12/24/2022] Open
Abstract
Glyceraldehyde 3-phosphate dehydrogenase (GAPDH) is conventionally considered a critical enzyme that involves in glycolysis for energy production. Recent previous studies have suggested that GAPDH is important in glutamate-induced neuronal excitotoxicity, while accumulated evidence also demonstrated that GAPDH nuclear translocation plays a critical role in cell death. However, the molecular mechanisms underlying this process remain largely unknown. In this study, we showed that GAPDH translocates to the nucleus in a Siah1-dependent manner upon glutamate stimulation. The nuclear GAPDH forms a protein complex with p53 and enhances p53 expression and phosphorylation. Disruption of the GAPDH-p53 interaction with an interfering peptide blocks glutamate-induced cell death and GAPDH-mediated up-regulation of p53 expression and phosphorylation. Furthermore, administration of the interfering peptide in vivo protects against ischemia-induced cell death in rats subjected to tMCAo. Our data suggest that the nuclear p53-GAPDH complex is important in regulating glutamate-mediated neuronal death and could serve as a potential therapeutic target for ischemic stroke treatment.
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Affiliation(s)
| | | | | | - Fang Liu
- Department of Neuroscience, Centre for Addiction and Mental Health, Clarke Division, 250 College Street, Toronto, Ontario M5T 1R8, Canada.
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24
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Mott NN, Pinceti E, Rao YS, Przybycien-Szymanska MM, Prins SA, Shults CL, Yang X, Glucksman MJ, Roberts JL, Pak TR. Age-dependent Effects of 17β-estradiol on the dynamics of estrogen receptor β (ERβ) protein-protein interactions in the ventral hippocampus. Mol Cell Proteomics 2014; 13:760-79. [PMID: 24390426 DOI: 10.1074/mcp.m113.031559] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Recent clinical evidence suggests that the neuroprotective and beneficial effects of hormone therapy may be limited by factors related to age and reproductive status. The patient's age and length of time without circulating ovarian hormones are likely to be key factors in the specific neurological outcomes of hormone therapy. However, the mechanisms underlying age-related changes in hormone efficacy have not been determined. We hypothesized that there are intrinsic changes in estrogen receptor β (ERβ) function that determine its ability to mediate the actions of 17β-estradiol (E2) in brain regions such as the ventral hippocampus. In this study, we identified and quantified a subset of ERβ protein interactions in the ventral hippocampus that were significantly altered by E2 replacement in young and aged animals, using two-dimensional differential gel electrophoresis coupled with liquid chromatography-electrospray ionization-tandem mass spectrometry. This study demonstrates quantitative changes in ERβ protein-protein interactions with E2 replacement that are dependent upon age in the ventral hippocampus and how these changes could alter processes such as transcriptional regulation. Thus, our data provide evidence that changes in ERβ protein interactions are a potential mechanism for age-related changes in E2 responsiveness in the brain after menopause.
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Affiliation(s)
- Natasha N Mott
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois 60153
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25
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Wang C, Han C, Li T, Yang D, Shen X, Fan Y, Xu Y, Zheng W, Fei C, Zhang L, Xue F. Nuclear translocation and accumulation of glyceraldehyde-3-phosphate dehydrogenase involved in diclazuril-induced apoptosis in Eimeria tenella (E. tenella). Vet Res 2013; 44:29. [PMID: 23651214 PMCID: PMC3655105 DOI: 10.1186/1297-9716-44-29] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Accepted: 04/18/2013] [Indexed: 01/09/2023] Open
Abstract
In mammalian cells, GAPDH (glyceraldehyde-3-phosphate dehydrogenase) has recently been shown to be implicated in numerous apoptotic paradigms, especially in neuronal apoptosis, and has been demonstrated to play a vital role in some neurodegenerative disorders. However, this phenomenon has not been reported in protists. In the present study, we report for the first time that such a mechanism is involved in diclazuril-induced apoptosis in Eimeria tenella (E. tenella). We found that upon treatment of parasites with diclazuril, the expression levels of GAPDH transcript and protein were significantly increased in second-generation merozoites. Then, we examined the subcellular localization of GAPDH by fluorescence microscopy and Western blot analysis. The results show that a considerable amount of GAPDH protein appeared in the nucleus within diclazuril-treated second-generation merozoites; in contrast, the control group had very low levels of GAPDH in the nucleus. The glycolytic activity of GAPDH was kinetically analyzed in different subcellular fractions. A substantial decrease (48.5%) in glycolytic activity of GAPDH in the nucleus was displayed. Moreover, the activities of caspases-3, -9, and −8 were measured in cell extracts using specific caspase substrates. The data show significant increases in caspase-3 and caspase-9 activities in the diclazuril-treated group.
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Affiliation(s)
- Congcong Wang
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, CAAS, Shanghai, 200241, PR China.
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26
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Roselló-Lletí E, Alonso J, Cortés R, Almenar L, Martínez-Dolz L, Sánchez-Lázaro I, Lago F, Azorín I, Juanatey JRG, Portolés M, Rivera M. Cardiac protein changes in ischaemic and dilated cardiomyopathy: a proteomic study of human left ventricular tissue. J Cell Mol Med 2013; 16:2471-86. [PMID: 22435364 PMCID: PMC3823441 DOI: 10.1111/j.1582-4934.2012.01565.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The development of heart failure (HF) is characterized by progressive alteration of left ventricle structure and function. Previous works on proteomic analysis in cardiac tissue from patients with HF remain scant. The purpose of our study was to use a proteomic approach to investigate variations in protein expression of left ventricle tissue from patients with ischaemic (ICM) and dilated cardiomyopathy (DCM). Twenty-four explanted human hearts, 12 from patients with ICM and 12 with DCM undergoing cardiac transplantation and six non-diseased donor hearts (CNT) were analysed by 2DE. Proteins of interest were identified by mass spectrometry and validated by Western blotting and immunofluorescence. We encountered 35 differentially regulated spots in the comparison CNT versus ICM, 33 in CNT versus DCM, and 34 in ICM versus DCM. We identified glyceraldehyde 3-phophate dehydrogenase up-regulation in both ICM and DCM, and alpha-crystallin B down-regulation in both ICM and DCM. Heat shock 70 protein 1 was up-regulated only in ICM. Ten of the eleven differentially regulated proteins common to both aetiologies are interconnected as a part of a same network. In summary, we have shown by proteomics analysis that HF is associated with changes in proteins involved in the cellular stress response, respiratory chain and cardiac metabolism. Although we found altered expression of eleven proteins common to both ischaemic and dilated aetiology, we also observed different proteins altered in both groups. Furthermore, we obtained that seven of these eleven proteins are involved in cell death and apoptosis processes, and therefore in HF progression.
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Affiliation(s)
- Esther Roselló-Lletí
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
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27
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Matsuda T, Sakaguchi M, Tanaka S, Yoshimoto T, Takaoka M. Prolyl oligopeptidase is a glyceraldehyde-3-phosphate dehydrogenase-binding protein that regulates genotoxic stress-induced cell death. Int J Biochem Cell Biol 2013; 45:850-7. [PMID: 23348613 DOI: 10.1016/j.biocel.2013.01.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Revised: 12/24/2012] [Accepted: 01/14/2013] [Indexed: 01/08/2023]
Abstract
Prolyl oligopeptidase is a serine protease that cleaves peptides shorter 30-mer at carboxyl side of an internal proline. This enzyme has been proposed to be involved in the maturation and degradation of peptide hormones and neuropeptides. However, conclusive results have not yet been reported, and the primary physiological role remains to be elucidated. Here, we describe the identification of a novel protein that interacts with prolyl oligopeptidase in a human neuroblastoma cell line NB-1. Using an affinity column with immobilized recombinant human prolyl oligopeptidase as ligand, we identified glyceraldehyde-3-phosphate dehydrogenase as a novel prolyl oligopeptidase binding protein in NB-1 cell extracts. The interaction between prolyl oligopeptidase and glyceraldehyde-3-phosphate dehydrogenase was confirmed by immunoprecipitation both in vitro and in vivo. To study the functional relevance of prolyl oligopeptidase-glyceraldehyde-3-phosphate dehydrogenase interactions, we investigated whether this interaction was involved in cytosine arabinoside-induced glyceraldehyde-3-phosphate dehydrogenase nuclear translocation and cell death. Prolyl oligopeptidase inhibitor, SUAM-14746, and prolyl oligopeptidase knockdown successfully inhibited glyceraldehyde-3-phosphate dehydrogenase translocation and promoted the survival of cytosine arabinoside-treated NB-1 cells. We also found that the interactions between prolyl oligopeptidase and glyceraldehyde-3-phosphate dehydrogenase in the cytoplasm but not in nuclei of NB-1 cell treated with cytosine arabinoside using an in situ proximity ligation assay. These results indicate that the interaction between prolyl oligopeptidase and glyceraldehyde-3-phosphate dehydrogenase is required for cytosine arabinoside-induced glyceraldehyde-3-phosphate dehydrogenase nuclear translocation and cell death. Therefore, the results of the present study demonstrate a novel function for prolyl oligopeptidase in cell death.
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Affiliation(s)
- Takashi Matsuda
- Laboratory of Cell Biology, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
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28
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Abstract
The concept of the cytosol as a space that contains discrete zones of metabolites is discussed relative to the contribution of GAPDH. GAPDH is directed to very specific cell compartments. This chapter describes the utilization of GAPDH's enzymatic function for focal demands (i.e. ATP/ADP and NAD(+)/NADH), and offers a speculative role for GAPDH as perhaps moderating local concentrations of inorganic phosphate and hydrogen ions (i.e. co-substrate and co-product of the glycolytic reaction, respectively). Where known, the structural features of the binding between GAPDH and the compartment components are discussed. The nuances, which are associated with the intracellular distribution of GAPDH, appear to be specific to the cell-type, particularly with regards to the various plasma membrane proteins to which GAPDH binds. The chapter includes discussion on the curious observation of GAPDH being localized to the external surface of the plasma membrane in a human cell type. The default perspective has been that GAPDH localization is synonymous with compartmentation of glycolytic energy. The chapter discusses GAPDH translocation to the nucleus and to non-nuclear cellular structures, emphasizing its glycolytic function. Nevertheless, it is becoming clear that alternate functions of GAPDH play a role in compartmentation, particularly in the translocation to the nucleus.
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Affiliation(s)
- Norbert W Seidler
- Department of Biochemistry, Kansas City University of Medicine and Biosciences, Kansas City, MO, USA
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29
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Abstract
GAPDH interacts with a plethora of diverse cellular proteins. The network of interacting partners, or interactome, is presented for GAPDH with the interacting molecules grouped into specific functional and structural categories. By organizing the binding partners in this way, certain common structural features are beginning to surface, such as acidic dipeptide sequences that are found in several of these binding proteins. Additionally, the consensus sequences for target polynucleotides are being brought to light. The categories, which are presented according to function, offer an opportunity for research into the corresponding structural correlates to these interactions. Recent discoveries of interacting proteins have revealed novel relationships that are generating emerging mechanisms. Proteins that are associated with age-related neurodegenerative diseases appear to be particularly prone to binding GAPDH, suggesting that GAPDH may be playing a role in these diseases. Neurodegenerative diseases that are discussed are the conformational diseases of aging, suggesting that GAPDH may be a global sensor for cellular conformational stress. In addition to GAPDH's oxidoreductase activity, several other enzymatic functions have been discovered, including peroxidase, nitrosylase, mono-ADP-ribosylase and kinase activities.
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Affiliation(s)
- Norbert W Seidler
- Department of Biochemistry, Kansas City University of Medicine and Biosciences, Kansas City, MO, USA
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Seo JK, Lee MJ, Go HJ, Park TH, Park NG. Purification and characterization of YFGAP, a GAPDH-related novel antimicrobial peptide, from the skin of yellowfin tuna, Thunnus albacares. FISH & SHELLFISH IMMUNOLOGY 2012; 33:743-752. [PMID: 22771964 DOI: 10.1016/j.fsi.2012.06.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 05/18/2012] [Accepted: 06/20/2012] [Indexed: 06/01/2023]
Abstract
A 3.4 kDa of antimicrobial peptide was purified from an acidified skin extract of the yellowfin tuna, Thunnus albacares, by preparative acid-urea-polyacrylamide gel electrophoresis and C(18) reversed-phase HPLC. A comparison of the N-terminal amino acid sequence of the purified peptide with that of other known polypeptides revealed high homology with the N-terminus of glyceraldehyde-3-phosphate dehydrogenase (GAPDH); thus, this peptide was designated as the yellowfin tuna GAPDH-related antimicrobial peptide (YFGAP). YFGAP showed potent antimicrobial activity against Gram-positive bacteria, such as Bacillus subtilis, Micrococcus luteus, and Streptococcus iniae (minimal effective concentrations [MECs], 1.2-17.0 μg/mL), and Gram-negative bacteria, such as Aeromonas hydrophila, Escherichia coli D31, and Vibrio parahaemolyticus (MECs, 3.1-12.0 μg/mL) without significant hemolytic activity. According to the secondary structural prediction and the homology modeling, this peptide forms an amphipathic structure and consists of three secondary structural motifs including one α-helix and two parallel β-strands. This peptide did not show membrane permeabilization ability and its activity was bacteriostatic rather than bactericidal. This is the first report of the isolation of an antimicrobial peptide from a tuna species and the first description of the antimicrobial function of the N-terminus of GAPDH of an animal species.
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Affiliation(s)
- Jung-Kil Seo
- Department of Biotechnology, Pukyong National University, Daeyeon Campus, Yongso-ro, Nam-Gu, Busan 608-737, Republic of Korea
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Li C, Feng JJ, Wu YP, Zhang GY. Cerebral ischemia-reperfusion induces GAPDH S-nitrosylation and nuclear translocation. BIOCHEMISTRY (MOSCOW) 2012; 77:671-8. [DOI: 10.1134/s0006297912060156] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang M, Li S, Zhang H, Pei L, Zou S, Lee FJS, Wang YT, Liu F. Direct interaction between GluR2 and GAPDH regulates AMPAR-mediated excitotoxicity. Mol Brain 2012; 5:13. [PMID: 22537872 PMCID: PMC3407747 DOI: 10.1186/1756-6606-5-13] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Accepted: 04/26/2012] [Indexed: 12/30/2022] Open
Abstract
Over-activation of AMPARs (α−amino-3-hydroxy-5-methylisoxazole-4-propionic acid subtype glutamate receptors) is implicated in excitotoxic neuronal death associated with acute brain insults, such as ischemic stroke. However, the specific molecular mechanism by which AMPARs, especially the calcium-impermeable AMPARs, induce neuronal death remains poorly understood. Here we report the identification of a previously unrecognized molecular pathway involving a direct protein-protein interaction that underlies GluR2-containing AMPAR-mediated excitotoxicity. Agonist stimulation of AMPARs promotes GluR2/GAPDH (glyceraldehyde-3-phosphate dehydrogenase) complex formation and subsequent internalization. Disruption of GluR2/GAPDH interaction by administration of an interfering peptide prevents AMPAR-mediated excitotoxicity and protects against damage induced by oxygen-glucose deprivation (OGD), an in vitro model of brain ischemia.
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Affiliation(s)
- Min Wang
- Department of Neuroscience, Centre for Addiction and Mental Health, Toronto, Canada
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Nuclear GAPDH: changing the fate of Müller cells in diabetes. J Ocul Biol Dis Infor 2012; 4:34-41. [PMID: 23538321 DOI: 10.1007/s12177-012-9085-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 03/12/2012] [Indexed: 10/28/2022] Open
Abstract
Müller cells, the primary glial cells are a crucial component of the retinal tissue performing a wide range of functions including maintaining the blood-retinal barrier. Several studies suggest that diabetes leads to Müller cell dysfunction and loss. The pathophysiology of hyperglycemia-induced cellular injury of Müller cells remains only poorly understood. Recently, the concept that translocation of the predominantly cytosolic glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH) to the nucleus and its accumulation in this cellular compartment alters transcriptional events associated with cell death induction has gained major interest. High glucose conditions induce nuclear translocation and accumulation of GAPDH in the nucleus of Müller cells in vivo and in vitro. With regards to Müller cell dysfunction, the effects of nuclear accumulation of GAPDH are multifaceted. Considering the functional versatility of GAPDH including gene regulation, DNA repair, telomere protection, etc., it is of immense importance to explore possible GAPDH actions to unravel the mysteries around the role of GAPDH in hyperglycemia-induced cellular changes in order to develop novel therapeutic strategies. Therefore, this review focuses on the molecular events associated with the nuclear translocation of GAPDH and how it affects the fate of Müller cells in diabetes.
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Sun H, Wang HT, Kwon WS, Kim YJ, In JG, Yang DC. A simple and rapid technique for the authentication of the ginseng cultivar, Yunpoong, using an SNP marker in a large sample of ginseng leaves. Gene 2011; 487:75-9. [PMID: 21835232 DOI: 10.1016/j.gene.2011.05.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 05/23/2011] [Indexed: 11/26/2022]
Abstract
Yunpoong is an important Korean ginseng (Panax ginseng C. A. Meyer) cultivar, but no molecular marker has been available to identify Yunpoong from other cultivars. In this study, we developed a single nucleotide polymorphism (SNP) marker for Yunpoong based on analysis of expressed sequence tags (ESTs) in an exon region of the glyceraldehyde 3-phosphate dehydrogenase (GAPDH) gene. This SNP marker had high specificity to authenticate Yunpoong in twelve different main ginseng cultivars. For application of the molecular marker, a rapid identification method was established based on the NaOH-Tris method and real-time polymerase chain reaction (PCR) in order to ensure more efficiency in the cultivar selection. The biggest feature of the NaOH-Tris method was that it made the extraction of DNA very simple and rapid in young leaf tissues. We only spent 1 min to extract DNA and directly used it to do PCR. In this report, the conventional DNA extraction method was used to develop molecular marker process, and the NaOH-Tris method was applied in screening large numbers of cultivars. Moreover, the greatest advantage of the real-time PCR compared with traditional PCR, is time saving and high efficiency. Thus, this strategy provides a rapid and reliable method for the specific identification of Yunpoong in a large number of samples.
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Affiliation(s)
- Hua Sun
- Department of Oriental Medicinal Material & Processing, Kyung Hee University, Yongin-si, Republic of Korea
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Shahani N, Sawa A. Protein S-nitrosylation: role for nitric oxide signaling in neuronal death. Biochim Biophys Acta Gen Subj 2011; 1820:736-42. [PMID: 21803124 DOI: 10.1016/j.bbagen.2011.07.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 06/21/2011] [Accepted: 07/13/2011] [Indexed: 12/15/2022]
Abstract
BACKGROUND One of the signaling mechanisms mediated by nitric oxide (NO) is through S-nitrosylation, the reversible redox-based modification of cysteine residues, on target proteins that regulate a myriad of physiological and pathophysiological processes. In particular, an increasing number of studies have identified important roles for S-nitrosylation in regulating cell death. SCOPE OF REVIEW The present review focuses on different targets and functional consequences associated with nitric oxide and protein S-nitrosylation during neuronal cell death. MAJOR CONCLUSIONS S-Nitrosylation exhibits double-edged effects dependent on the levels, spatiotemporal distribution, and origins of NO in the brain: in general Snitrosylation resulting from the basal low level of NO in cells exerts anti-cell death effects, whereas S-nitrosylation elicited by induced NO upon stressed conditions is implicated in pro-cell death effects. GENERAL SIGNIFICANCE Dysregulated protein S-nitrosylation is implicated in the pathogenesis of several diseases including degenerative diseases of the central nervous system (CNS). Elucidating specific targets of S-nitrosylation as well as their regulatory mechanisms may aid in the development of therapeutic intervention in a wide range of brain diseases.
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Affiliation(s)
- Neelam Shahani
- Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
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Chernorizov KA, Elkina JL, Semenyuk PI, Svedas VK, Muronetz VI. Novel inhibitors of glyceraldehyde-3-phosphate dehydrogenase: covalent modification of NAD-binding site by aromatic thiols. BIOCHEMISTRY (MOSCOW) 2011; 75:1444-9. [PMID: 21314614 DOI: 10.1134/s0006297910120047] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH, EC 1.2.1.12) is a glycolytic enzyme catalyzing the formation of 1,3-diphosphoglycerate from glyceraldehyde-3-phosphate and inorganic phosphate. In cooperation with E3 ubiquitin-kinase Siah1, GAPDH directly participates in the apoptotic death of neurons in Parkinson's disease. Potential GAPDH inhibitors were screened in silico, and three compounds with high affinity to the NAD-binding site and theoretically capable of forming a disulfide bond with amino acid residue Cys149 were found among cysteine and glutathione derivatives. The inhibitory effect of these compounds was tested on GAPDH from rabbit muscles using isothermal calorimetry and kinetic methods. As a result of experimental screening, we selected two compounds that inhibit GAPDH by forming disulfide bonds with the Cys149 residue in the enzyme active site. Since Cys149 is the key residue not only for the catalyzed reaction, but also for interaction with Siah1, the compounds can be assumed to inhibit the formation of the proapoptotic complex GAPDH-Siah1 and therefore have potential effect against Parkinson's disease.
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Affiliation(s)
- K A Chernorizov
- Faculty of Bioengineering and Bioinformatics and Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119991, Russia
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Shahani N, Sawa A. Nitric oxide signaling and nitrosative stress in neurons: role for S-nitrosylation. Antioxid Redox Signal 2011; 14:1493-504. [PMID: 20812870 DOI: 10.1089/ars.2010.3580] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Nitric oxide (NO) mediates cellular signaling pathways that regulate a plethora of physiological processes. One of the signaling mechanisms mediated by NO is through S-nitrosylation of cysteine residues in target proteins, which is now regarded as an important redox-based physiological action. Deregulation of the protein S-nitrosylation upon nitrosative stress, however, has also been linked to various human diseases, such as neurodegenerative disorders. Between these physiological and pathophysiological roles, there are mechanisms whereby a milder level of nitrosative stress provides S-nitrosylation of some proteins that counteracts the pathological processes, serving as a negative feedback mechanism. In addition, NO has recently emerged as a mediator of epigenetic gene expression and chromatin changes. In this review, these molecular mechanisms, especially those in the central nervous system and neurodegenerative disorders, are described.
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Affiliation(s)
- Neelam Shahani
- Department of Psychiatry, Johns Hopkins University School of Medicine, 600N Wolfe St., Baltimore, MD 21287, USA
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Structure and kinetic characterization of human sperm-specific glyceraldehyde-3-phosphate dehydrogenase, GAPDS. Biochem J 2011; 435:401-9. [DOI: 10.1042/bj20101442] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
hGAPDS (human sperm-specific glyceraldehyde-3-phosphate dehydrogenase) is a glycolytic enzyme essential for the survival of spermatozoa, and constitutes a potential target for non-hormonal contraception. However, enzyme characterization of GAPDS has been hampered by the difficulty in producing soluble recombinant protein. In the present study, we have overexpressed in Escherichia coli a highly soluble form of hGAPDS truncated at the N-terminus (hGAPDSΔN), and crystallized the homotetrameric enzyme in two ligand complexes. The hGAPDSΔN–NAD+–phosphate structure maps the two anion-recognition sites within the catalytic pocket that correspond to the conserved Ps site and the newly recognized Pi site identified in other organisms. The hGAPDSΔN–NAD+–glycerol structure shows serendipitous binding of glycerol at the Ps and new Pi sites, demonstrating the propensity of these anion-recognition sites to bind non-physiologically relevant ligands. A comparison of kinetic profiles between hGAPDSΔN and its somatic equivalent reveals a 3-fold increase in catalytic efficiency for hGAPDSΔN. This may be attributable to subtle amino acid substitutions peripheral to the active centre that influence the charge properties and protonation states of catalytic residues. Our data therefore elucidate structural and kinetic features of hGAPDS that might provide insightful information towards inhibitor development.
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The diverse functions of GAPDH: views from different subcellular compartments. Cell Signal 2010; 23:317-23. [PMID: 20727968 DOI: 10.1016/j.cellsig.2010.08.003] [Citation(s) in RCA: 444] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Accepted: 08/10/2010] [Indexed: 11/23/2022]
Abstract
Multiple roles for glyceraldehyde-3-phosphate dehydrogenase (GAPDH) have been recently appreciated. In addition to the cytoplasm where the majority of GAPDH is located under the basal condition, GAPDH is also found in the particulate fractions, such as the nucleus, the mitochondria, and the small vesicular fractions. When cells are exposed to various stressors, dynamic subcellular re-distribution of GAPDH occurs. Here we review these multifunctional properties of GAPDH, especially linking them to its oligomerization, posttranslational modification, and subcellular localization. This includes mechanistic descriptions of how S-nitrosylation of GAPDH under oxidative stress may lead to cell death/dysfunction via nuclear translocation of GAPDH, which is counteracted by a cytosolic GOSPEL. GAPDH is also involved in various diseases, especially neurodegenerative disorders and cancers. Therapeutic strategies to these conditions based on molecular understanding of GAPDH are discussed.
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40
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Wu J, Tang Q, Shen J, Yao A, Wang F, Pu L, Yu Y, Li X, Li G, Zhang F, Sun B, Kong L, Li D, Zhang Y, Guo X, Wang X. Comparative proteome profile during the early period of small-for-size liver transplantation in rats revealed the protective role of Prdx5. J Hepatol 2010; 53:73-83. [PMID: 20451279 DOI: 10.1016/j.jhep.2010.01.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2009] [Revised: 01/12/2010] [Accepted: 01/12/2010] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS In living-donor liver transplantation (LDLT), "small-for-size graft (SFSG) syndrome" is a complex process resulting primarily from ischemia-reperfusion injury (IRI) and portal hypertension associated with size mismatch between graft and recipient. In the early period of LDLT, molecular events related to subsequent apoptosis, necrosis, proliferation and regeneration appeared in specific protein expression patterns. METHODS We used 2D-PAGE and MALDI-TOF/TOF technology to construct a comparative proteome profile for small-for-size liver grafts (SFSGs) during the early period of LDLT in rats (ischemia 1h, and 2, 6, 24, 48 h post-reperfusion); sham-operated liver was the control. Western blotting was used to confirm the proteomics results and immunohistochemistry was carried out to explore the cellular localization of selected proteins. We further performed cluster and bioinformatics analyses of differential proteins. Lastly, we overexpressed Prdx5 in liver grafts using an adenoviral vector to evaluate its protective role. RESULTS We identified 314 differential protein spots corresponding to 259 different proteins. Cluster analyses revealed six expression patterns, and bioinformatics analyses revealed that each pattern was related to many specific cell processes. We also showed that Prdx5 overexpression could attenuate injury to SFSGs and increase survival in recipients. CONCLUSIONS Taken together, these results reveal an important proteome profile that is functional in SFSGs during early period of LDLT, and provide a strong basis for further research.
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Affiliation(s)
- Jindao Wu
- Key Laboratory of Living Donor Liver Transplantation, Ministry of Public Health, Department of Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Demarse NA, Ponnusamy S, Spicer EK, Apohan E, Baatz JE, Ogretmen B, Davies C. Direct binding of glyceraldehyde 3-phosphate dehydrogenase to telomeric DNA protects telomeres against chemotherapy-induced rapid degradation. J Mol Biol 2009; 394:789-803. [PMID: 19800890 DOI: 10.1016/j.jmb.2009.09.062] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Revised: 09/24/2009] [Accepted: 09/25/2009] [Indexed: 01/01/2023]
Abstract
Glyceraldehyde 3-phosphate dehydrogenase (GAPDH) is a glycolytic enzyme that displays several non-glycolytic activities, including the maintenance and/or protection of telomeres. In this study, we determined the molecular mechanism and biological role of the interaction between GAPDH and human telomeric DNA. Using gel-shift assays, we show that recombinant GAPDH binds directly with high affinity (K(d)=45 nM) to a single-stranded oligonucleotide comprising three telomeric DNA repeats, and that nucleotides T1, G5, and G6 of the TTAGGG repeat are essential for binding. The stoichiometry of the interaction is 2:1 (DNA:GAPDH), and GAPDH appears to form a high-molecular-weight complex when bound to the oligonucleotide. Mutation of Asp32 and Cys149, which are localized to the NAD-binding site and the active-site center of GAPDH, respectively, produced mutants that almost completely lost their telomere-binding functions both in vitro and in situ (in A549 human lung cancer cells). Treatment of A549 cells with the chemotherapeutic agents gemcitabine and doxorubicin resulted in increased nuclear localization of expressed wild-type GAPDH, where it protected telomeres against rapid degradation, concomitant with increased resistance to the growth-inhibitory effects of these drugs. The non-DNA-binding mutants of GAPDH also localized to the nucleus when expressed in A549 cells, but did not confer any significant protection of telomeres against chemotherapy-induced degradation or growth inhibition; this occurred without the involvement of caspase activation or apoptosis regulation. Overall, these data demonstrate that GAPDH binds telomeric DNA directly in vitro and may have a biological role in the protection of telomeres against rapid degradation in response to chemotherapeutic agents in A549 human lung cancer cells.
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Affiliation(s)
- Neil A Demarse
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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Kaszuba K, Rog T, St Pierre JF, Mannisto PT, Karttunen M, Bunker A. Molecular dynamics study of prolyl oligopeptidase with inhibitor in binding cavity. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2009; 20:595-609. [PMID: 20024801 DOI: 10.1080/10629360903438198] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We used the crystal structure of prolyl oligopeptidase (POP) with bound Z-pro-prolinal (ZPP) inhibitor (Protein Data Bank (PDB) structure 1QFS) to perform an intensive molecular dynamics study of the POP-ZPP complex. We performed 100 ns of simulation with the hemiacetal bond, through which the ZPP is bound to the POP, removed in order to better investigate the binding cavity environment. From basic analysis, measuring the radius of gyration, root mean square deviation, solvent accessible surface area and definition of the secondary structure of protein, we determined that the protein structure is highly stable and maintains its structure over the entire simulation time. This demonstrates that such long time simulations can be performed without the protein structure losing stability. We found that water bridges and hydrogen bonds play a negligible role in binding the ZPP thus indicating the importance of the hemiacetal bond. The two domains of the protein are bound by a set of approximately 12 hydrogen bonds, specific to the particular POP protein.
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Affiliation(s)
- K Kaszuba
- Department of Physics, Tampere University of Technology, FI-33101 Tampere, Finland
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43
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Colell A, Green DR, Ricci JE. Novel roles for GAPDH in cell death and carcinogenesis. Cell Death Differ 2009; 16:1573-81. [PMID: 19779498 DOI: 10.1038/cdd.2009.137] [Citation(s) in RCA: 182] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Growing evidence points to the fact that glucose metabolism has a central role in carcinogenesis. Among the enzymes controlling this energy production pathway, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is of particular interest. Initially identified as a glycolytic enzyme and considered as a housekeeping gene, this enzyme is actually tightly regulated and is involved in numerous cellular functions. Particularly intriguing are recent reports describing GAPDH as a regulator of cell death. However, its role in cell death is unclear; whereas some studies point toward a proapoptotic function, others describe a protective role and suggest its participation in tumor progression. In this study, we highlight recent findings and discuss potential mechanisms through which cells regulate GAPDH to fulfill its diverse functions to influence cell fate.
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Affiliation(s)
- A Colell
- Department of Cell Death and Proliferation, Institut d'Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas and Liver Unit, Hospital Clinic i Provincial, Centro de Investigaciones Biomédicas Esther Koplowitz, and CIBEREHD, IDIBAPS, 08036-Barcelona, Spain.
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Groeneveld GJ, van Muiswinkel FL, de Leeuw van Weenen J, Blauw H, Veldink JH, Wokke JHJ, van den Berg LH, Bär PR. CGP 3466B has no effect on disease course of (G93A) mSOD1 transgenic mice. ACTA ACUST UNITED AC 2009; 5:220-5. [PMID: 15799550 DOI: 10.1080/14660820410019530] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND There is an accumulating body of evidence that apoptosis is involved in the motor neuron death that occurs in ALS, and in the (G93A) mSOD1 transgenic mouse model (mSOD1 mice). CGP 3466B, a tricyclic propargylamine structurally related to (-)-deprenyl, was found to inhibit apoptosis in a wide variety of in vitro and in vivo models. We therefore studied the effect of CGP 3466B in mSOD1 mice. METHODS As the effect of CGP 3466B was previously reported to have a bell-shaped curve, we performed a dose-ranging study. High-copy G93A mSOD1 mice were treated subcutaneously from the age of 50 days until death with four concentrations of CGP 3466B (0.39 microg kg(-1), 3.9 microg kg(-1), 39 microg kg(-1), and 390 microg kg(-1)). Behavioural tests were performed daily to determine disease onset, disease progression and survival. At the age of 110 days, two mice per group were sacrificed for histopathological analysis of the lumbar ventral horn and for semiquantitative analysis of motor neuron number. RESULTS We observed no effect on disease onset, disease progression, or survival of the mice. We also did not observe a significant effect on the number of motor neurons due to CGP 3466B. CONCLUSIONS We conclude that in high-copy G93A mSOD1 mice, chronic subcutaneous treatment with CGP 3466B offers no clinical benefit.
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Affiliation(s)
- Geert J Groeneveld
- Department of Neurology, Laboratory for Experimental Neurology, Rudolf Magnus Institute of Neuroscience, University Medical Centre Utrecht, Utrecht, The Netherlands.
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Sikora D, Greco-Stewart VS, Miron P, Pelchat M. The hepatitis delta virus RNA genome interacts with eEF1A1, p54(nrb), hnRNP-L, GAPDH and ASF/SF2. Virology 2009; 390:71-8. [PMID: 19464723 DOI: 10.1016/j.virol.2009.04.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Revised: 03/26/2009] [Accepted: 04/29/2009] [Indexed: 02/08/2023]
Abstract
Because of its extremely limited coding capacity, the hepatitis delta virus (HDV) takes over cellular machineries for its replication and propagation. Despite the functional importance of host factors in both HDV biology and pathogenicity, little is known about proteins that associate with its RNA genome. Here, we report the identification of several host proteins interacting with an RNA corresponding to the right terminal stem-loop domain of HDV genomic RNA, using mass spectrometry on a UV crosslinked ribonucleoprotein complex, RNA affinity chromatography, and screening of a library of purified RNA-binding proteins. Co-immunoprecipitation was used to confirm the interactions of eEF1A1, p54(nrb), hnRNP-L, GAPDH and ASF/SF2 with the right terminal stem-loop domain of HDV genomic RNA in vitro, and with both polarities of HDV RNA within HeLa cells. Our discovery that HDV RNA associates with RNA-processing pathways and translation machinery during its replication provides new insights into HDV biology and its pathogenicity.
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Affiliation(s)
- Dorota Sikora
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Room 4111A, Ottawa, Ontario, Canada, K1H 8M5
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Yang SH, Liu ML, Tien CF, Chou SJ, Chang RY. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) interaction with 3' ends of Japanese encephalitis virus RNA and colocalization with the viral NS5 protein. J Biomed Sci 2009; 16:40. [PMID: 19368702 PMCID: PMC2673215 DOI: 10.1186/1423-0127-16-40] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2009] [Accepted: 04/15/2009] [Indexed: 01/26/2023] Open
Abstract
Replication of the Japanese encephalitis virus (JEV) genome depends on host factors for successfully completing their life cycles; to do this, host factors have been recruited and/or relocated to the site of viral replication. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH), a cellular metabolic protein, was found to colocalize with viral RNA-dependent RNA polymerase (NS5) in JEV-infected cells. Subcellular fractionation further indicated that GAPDH remained relatively constant in the cytosol, while increasing at 12 to 24 hours postinfection (hpi) and decreasing at 36 hpi in the nuclear fraction of infected cells. In contrast, the redistribution patterns of GAPDH were not observed in the uninfected cells. Co-immunoprecipitation of GAPDH and JEV NS5 protein revealed no direct protein-protein interaction; instead, GAPDH binds to the 3' termini of plus- and minus-strand RNAs of JEV by electrophoretic mobility shift assays. Accordingly, GAPDH binds to the minus strand more efficiently than to the plus strand of JEV RNAs. This study highlights the findings that infection of JEV changes subcellular localization of GAPDH suggesting that this metabolic enzyme may play a role in JEV replication.
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Affiliation(s)
- Shang-Hua Yang
- Institute of Biotechnology and Department of Life Science, National Dong Hwa University, Taiwan, ROC.
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Tajes Orduña M, Pelegrí Gabalda C, Vilaplana Hortensi J, Pallàs Lliberia M, Camins Espuny A. An evaluation of the neuroprotective effects of melatonin in an in vitro experimental model of age-induced neuronal apoptosis. J Pineal Res 2009; 46:262-7. [PMID: 19196437 DOI: 10.1111/j.1600-079x.2008.00656.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The neuroprotective effects of melatonin in an experimental model of aging-induced apoptosis have been examined. Cerebellar granule neurons show characteristics of apoptosis after 17 days in culture (DV). The addition of melatonin to neuronal cell cultures (100-500 mum) resulted in neuroprotective and antiapoptotic effects, which were revealed by nuclear condensed cell counting. In a thorough analysis by Western-blot of the potential pathways responsible for melatonin's neuroprotective effects, we found an increase in the activation of prosurvival Akt. Subsequently GSK3beta inhibition and an increase in p-FOXO1 phosphorylation occurred. In this model of aging, apoptosis was associated with an elevated DNA damage, as demonstrated by an increase in the activation of ataxia telangiectasia muted (ATM). Subsequently, downstream targets such as p53 were activated. Furthermore, the process of DNA damage was coupled to an increase in the expression of certain proteins involved in cell cycle regulation; these were cyclin D and the proapoptotic transcription factor E2F-1. We conclude that the antiapoptotic effects of melatonin were mediated by two potential mechanisms: by increasing the activity of prosurvival pathways via Akt and by the prevention of DNA damage (via ATM inhibition) followed by the reduction of cell cycle re-entry.
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Affiliation(s)
- Marta Tajes Orduña
- Centro de Investigación de Biomedicina en Red en Enfermedades Neurodegenerativas (CIBERNED), Unitat de Farmacologia i Farmacognòsia and Institut de Biomedicina (IBUB), Barcelona, Spain
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Goto A, Wang YL, Kabuta T, Setsuie R, Osaka H, Sawa A, Ishiura S, Wada K. Proteomic and histochemical analysis of proteins involved in the dying-back-type of axonal degeneration in the gracile axonal dystrophy (gad) mouse. Neurochem Int 2008; 54:330-8. [PMID: 19154771 DOI: 10.1016/j.neuint.2008.12.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 12/12/2008] [Accepted: 12/17/2008] [Indexed: 11/25/2022]
Abstract
Local axonal degeneration is a common pathological feature of peripheral neuropathies and neurodegenerative disorders of the central nervous system, including Alzheimer's disease, Parkinson's disease, and stroke; however, the underlying molecular mechanism is not known. Here, we analyzed the gracile axonal dystrophy (gad) mouse, which displays the dying-back-type of axonal degeneration in sensory neurons, to find the molecules involved in the mechanism of axonal degeneration. The gad mouse is analogous to a null mutant of ubiquitin carboxyl-terminal hydrolase L1 (UCH-L1). UCH-L1 is a deubiquitinating enzyme expressed at high levels in neurons, as well as testis and ovary. In addition, we recently discovered a new function of UCH-L1-namely to bind to and stabilize mono-ubiquitin in neurons, and found that the level of mono-ubiquitin was decreased in neurons, especially in axons of the sciatic nerve, in gad mice. The low level of ubiquitin suggests that the target proteins of the ubiquitin proteasome system are not sufficiently ubiquitinated and thus degraded in the gad mouse; therefore, these proteins may be the key molecules involved in axonal degeneration. To identify molecules involved in axonal degeneration in gad mice, we compared protein expression in sciatic nerves between gad and wild-type mice at 2 and 12 weeks old, using two-dimensional difference gel electrophoresis. As a result, we found age-dependent accumulation of several proteins, including glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and 14-3-3, in gad mice compared with wild-type mice. Histochemical analyses demonstrated that GAPDH and 14-3-3 were localized throughout axons in both gad and wild-type mice, but GAPDH accumulated in the axons of gad mice. Recently, it has been suggested that a wide range of neurodegenerative diseases are characterized by the accumulation of intracellular and extracellular protein aggregates, and it has been reported that oxidative stress causes the aggregation of GAPDH. Furthermore, histochemical analysis demonstrated that sulfonated GAPDH, a sensor of oxidative stress that elicits cellular dysfunction, was expressed in the axons of gad mice, and 4-hydroxy-2-nonenal, a major marker of oxidative stress, was also only detected in gad mice. Our findings suggest that GAPDH may participate in a process of the dying-back-type of axonal degeneration in gad mice and may provide valuable insight into the mechanisms of axonal degeneration.
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Affiliation(s)
- Akiko Goto
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Ogawahigashi, Kodaira, Tokyo, Japan
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Boda E, Pini A, Hoxha E, Parolisi R, Tempia F. Selection of reference genes for quantitative real-time RT-PCR studies in mouse brain. J Mol Neurosci 2008; 37:238-53. [PMID: 18607772 DOI: 10.1007/s12031-008-9128-9] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Accepted: 06/13/2008] [Indexed: 10/21/2022]
Abstract
Since a growing number of studies based on the real-time reverse transcriptase polymerase chain reaction (RT-PCR) continue to be published in order to highlight genes specifically involved in brain development, maturation, and function, the identification of reference genes suitable for this kind of experiments is now an urgent need in the neuroscience field. The aim of this work was to verify the suitability of some very common housekeeping genes (such as Gapdh, 18s, and B2m) and of some relatively new control genes (such as Pgk1, Tfrc, and Gusb) during mouse brain maturation. We tested the candidate reference genes in mouse whole brain, cerebellum, brain stem, hippocampus, medial septum, frontal neocortex, and olfactory bulb. Moreover, we reported the first complete study of Pgk1 expression throughout the development and the aging of mouse brain. Although no tested gene showed to be the optimal reference for all mouse brain regions, in general, the new housekeeping genes were highly stable in most of the analyzed regions. Above all, with few exceptions, Pgk1 showed to be a reliable control for the analyzed mouse brain regions during development, maturation, and aging.
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Affiliation(s)
- Enrica Boda
- Department of Neuroscience, University of Torino, Torino, Italy.
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Tsuchiya Y, Okuno Y, Hishinuma K, Ezaki A, Okada G, Yamaguchi M, Chikuma T, Hojo H. 4-Hydroxy-2-nonenal-modified glyceraldehyde-3-phosphate dehydrogenase is degraded by cathepsin G. Free Radic Biol Med 2007; 43:1604-15. [PMID: 18037126 DOI: 10.1016/j.freeradbiomed.2007.08.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 08/22/2007] [Accepted: 08/23/2007] [Indexed: 11/25/2022]
Abstract
Degradation of oxidized or oxidatively modified proteins is an essential part of the antioxidant defenses of cells. 4-Hydroxy-2-nonenal (HNE), a major reactive aldehyde formed by lipid peroxidation, causes many types of cellular damage. It has been reported that HNE-modified proteins are degraded by the ubiquitin-proteasome pathway or, in some cases, by the lysosomal pathway. However, our previous studies using U937 cells showed that HNE-modified glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is degraded by an enzyme that is sensitive to a serine protease inhibitor, diisopropyl fluorophosphate (DFP), but not a proteasome inhibitor, MG-132, and that its degradation is not catalyzed in the acidic pH range where lysosomal enzymes are active. In the present study, we purified an HNE-modified GAPDH-degrading enzyme from a U937 cell extract to a final active fraction containing two proteins of 28 kDa (P28) and 27 kDa (P27) that became labeled with [(3)H]DFP. Using peptide mass fingerprinting and a specific antibody, P28 and P27 were both identified as cathepsin G. The degradation activity was inhibited by cathepsin G inhibitors. Furthermore, a cell extract from U937 cells transfected with a cathepsin G-specific siRNA hardly degraded HNE-modified GAPDH. These results suggest that cathepsin G plays a role in the degradation of HNE-modified GAPDH.
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Affiliation(s)
- Yukihiro Tsuchiya
- Department of Hygienic Chemistry, Showa Pharmaceutical University, 3-3165 Higashitamagawagakuen, Machida, Tokyo 194-8543, Japan
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