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Pradhan AK, Shyam A, Mondal P. Quantum Chemical Investigations on the Hydrolysis of Gold(III)-Based Anticancer Drugs and Their Interaction with Amino Acid Residues. ACS OMEGA 2021; 6:28084-28097. [PMID: 34723008 PMCID: PMC8552358 DOI: 10.1021/acsomega.1c04168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
A comprehensive hydrolysis mechanism of the promising class of Au(III) anticancer drugs [Au(DMDT)Cl2] (DMDT = N,N-dimethyldithiocarbamate) (R) and [Au(damp)Cl2] (damp = 2-[(dimethylamino)methyl]phenyl) (R') was done by means of density functional theory (DFT) in combination with the CPCM solvation model to explore the solution behavior and stability under physiological conditions. The activation free energies (ΔG) for the second hydrolysis, R (13.7 kcal/mol) and R' (10.0 kcal/mol) are found to be relatively lower in comparison to the first hydrolysis, and their rate constant values are computed to be 5.62 × 102 and 2.90 × 105 s-1, respectively. Besides these, the interaction mechanisms of aquated R and R' with the potential protein-binding sites cysteine (Cys) and selenocysteine (Sec) were also investigated in detail. The kinetic study and activation Gibbs free energy profiles reveal that the aquated complexes of R and R' bind more effectively to the Se site of Sec than to the S site of Cys. Intra- and intermolecular hydrogen bonding play a pivotal role in stabilizing the intermediates and transition states involved in the ligand substitution reactions of R and R'. Natural population analysis (NPA) was done to determine the charge distributions on important atoms during the hydrolysis and ligand substitution reactions.
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El-Shaqanqery HE, Mohamed RH, Sayed AA. Mitochondrial Effects on Seeds of Cancer Survival in Leukemia. Front Oncol 2021; 11:745924. [PMID: 34692527 PMCID: PMC8529120 DOI: 10.3389/fonc.2021.745924] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/13/2021] [Indexed: 12/13/2022] Open
Abstract
The cancer metabolic alteration is considered a hallmark and fast becoming a road for therapeutic intervention. Mitochondria have been regarded as essential cell elements that fuel the metabolic needs of most cancer cell types. Leukemia stem cells (LSCs) are a heterogeneous, highly self-renewing, and pluripotent cell population within leukemic cells. The most important source of ATP and metabolites to fulfill the bioenergetics and biosynthetic needs of most cancer stem cells is the mitochondria. In addition, mitochondria have a core role in autophagy and cell death and are the main source of reactive oxygen species (ROS) generation. Overall, growing evidence now shows that mitochondrial activities and pathways have changed to adapt with different types of leukemia, thus mitochondrial metabolism could be targeted for blood malignancy therapy. This review focuses on the function of mitochondria in LSC of the different leukemia types.
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Affiliation(s)
| | - Rania Hassan Mohamed
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ahmed A. Sayed
- Genomics Program, Children’s Cancer Hospital Egypt, Cairo, Egypt
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
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Wright DE, Panaseiko N, O'Donoghue P. Acetylated Thioredoxin Reductase 1 Resists Oxidative Inactivation. Front Chem 2021; 9:747236. [PMID: 34604175 PMCID: PMC8479162 DOI: 10.3389/fchem.2021.747236] [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: 07/26/2021] [Accepted: 08/27/2021] [Indexed: 11/30/2022] Open
Abstract
Thioredoxin Reductase 1 (TrxR1) is an enzyme that protects human cells against reactive oxygen species generated during oxidative stress or in response to chemotherapies. Acetylation of TrxR1 is associated with oxidative stress, but the function of TrxR1 acetylation in oxidizing conditions is unknown. Using genetic code expansion, we produced recombinant and site-specifically acetylated variants of TrxR1 that also contain the non-canonical amino acid, selenocysteine, which is essential for TrxR1 activity. We previously showed site-specific acetylation at three different lysine residues increases TrxR1 activity by reducing the levels of linked dimers and low activity TrxR1 tetramers. Here we use enzymological studies to show that acetylated TrxR1 is resistant to both oxidative inactivation and peroxide-induced multimer formation. To compare the effect of programmed acetylation at specific lysine residues to non-specific acetylation, we produced acetylated TrxR1 using aspirin as a model non-enzymatic acetyl donor. Mass spectrometry confirmed aspirin-induced acetylation at multiple lysine residues in TrxR1. In contrast to unmodified TrxR1, the non-specifically acetylated enzyme showed no loss of activity under increasing and strongly oxidating conditions. Our data suggest that both site-specific and general acetylation of TrxR1 regulate the enzyme’s ability to resist oxidative damage.
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Affiliation(s)
- David E Wright
- Departments of Biochemistry, The University of Western Ontario, London, ON, Canada
| | - Nikolaus Panaseiko
- Departments of Biochemistry, The University of Western Ontario, London, ON, Canada
| | - Patrick O'Donoghue
- Departments of Biochemistry, The University of Western Ontario, London, ON, Canada.,Departments of Chemistry, The University of Western Ontario, London, ON, Canada
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Compensatory Protection of Thioredoxin-Deficient Cells from Etoposide-Induced Cell Death by Selenoprotein W via Interaction with 14-3-3. Int J Mol Sci 2021; 22:ijms221910338. [PMID: 34638679 PMCID: PMC8508763 DOI: 10.3390/ijms221910338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 12/26/2022] Open
Abstract
Selenoprotein W (SELENOW) is a 9.6 kDa protein containing selenocysteine (Sec, U) in a conserved Cys-X-X-Sec (CXXU) motif. Previously, we reported that SELENOW regulates various cellular processes by interacting with 14-3-3β at the U of the CXXU motif. Thioredoxin (Trx) is a small protein that plays a key role in the cellular redox regulatory system. The CXXC motif of Trx is critical for redox regulation. Recently, an interaction between Trx1 and 14-3-3 has been predicted. However, the binding mechanism and its biological effects remain unknown. In this study, we found that Trx1 interacted with 14-3-3β at the Cys32 residue in the CXXC motif, and SELENOW and Trx1 were bound at Cys191 residue of 14-3-3β. In vitro binding assays showed that SELENOW and Trx1 competed for interaction with 14-3-3β. Compared to control cells, Trx1-deficient cells and SELENOW-deficient cells showed increased levels of both the subG1 population and poly (ADP-ribose) polymerase (PARP) cleavage by etoposide treatment. Moreover, Akt phosphorylation of Ser473 was reduced in Trx1-deficient cells and was recovered by overexpression of SELENOW. These results indicate that SELENOW can protect Trx1-deficient cells from etoposide-induced cell death through its interaction with 14-3-3β.
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Au 2phen and Auoxo6, Two Dinuclear Oxo-Bridged Gold(III) Compounds, Induce Apoptotic Signaling in Human Ovarian A2780 Cancer Cells. Biomedicines 2021; 9:biomedicines9080871. [PMID: 34440075 PMCID: PMC8389655 DOI: 10.3390/biomedicines9080871] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 01/01/2023] Open
Abstract
Au2phen ((2,9-dimethyl-1,10-phenanthroline)2Au2(µ-O)2)(PF6)2 and Auoxo6 ((6,6′-dimethyl-2,2′-bipyridine)2Au2(µ-O)2)(PF6)2 are two structurally related gold(III) complexes that were previously reported to display relevant and promising anticancer properties in vitro toward a large number of human cancer cell lines. To expand the knowledge on the molecular mechanisms through which these gold(III) complexes trigger apoptosis in cancer cells, further studies have been performed using A2780 ovarian cancer cells as reference models. For comparative purposes, parallel studies were carried out on the gold(III) complex AuL12 (dibromo(ethylsarcosinedithiocarbamate)gold(III)), whose proapoptotic profile had been earlier characterized in several cancer cell lines. Our results pointed out that all these gold(III) compounds manifest a significant degree of similarity in their cellular and proapoptotic effects; the main observed perturbations consist of potent thioredoxin reductase inhibition, disruption of the cell redox balance, impairment of the mitochondrial membrane potential, and induction of associated metabolic changes. In addition, evidence was gained of the remarkable contribution of ASK1 (apoptosis-signal-regulating kinase-1) and AKT pathways to gold(III)-induced apoptotic signaling. Overall, the observed effects may be traced back to gold(III) reduction and subsequent formation and release of gold(I) species that are able to bind and inhibit several enzymes responsible for the intracellular redox homeostasis, in particular the selenoenzyme thioredoxin reductase.
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Wang SW, Sheng H, Bai YF, Weng YY, Fan XY, Zheng F, Fu JQ, Zhang F. Inhibition of histone acetyltransferase by naringenin and hesperetin suppresses Txnip expression and protects pancreatic β cells in diabetic mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 88:153454. [PMID: 33663922 DOI: 10.1016/j.phymed.2020.153454] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/19/2020] [Accepted: 12/24/2020] [Indexed: 05/27/2023]
Abstract
BACKGROUND The damage of pancreatic β cells is a major pathogenesis of the development and progression of type 2 diabetes and there is still no effective therapy to protect pancreatic β cells clinically. In our previous study, we found that Quzhou Fructus Aurantii (QFA), which is rich in flavanones, had the protective effect of pancreatic β cells in diabetic mice. However, the underlying mechanism is still unclear. PURPOSE In the current study, we administered naringenin and hesperetin, two major active components of QFA, to protect pancreatic β cells and to investigate the underlying molecular mechanism focusing on the epigenetic modifications. METHODS We used diabetic db/db mouse and INS-1 pancreatic β cell line as in vivo and in vitro models to investigate the protective effect of naringenin and hesperetin on pancreatic β cells under high glucose environment and the related mechanism. The phenotypic changes were evaluatedby immunostaining and the measurement of biochemical indexes. The molecular mechanism was explored by biological techniques such as western blotting, qPCR, ChIP-seq and ChIP-qPCR, flow cytometry and lentivirus infection. RESULTS We found that naringenin and hesperetin had an inhibitory effect on histone acetylation. We showed that naringenin and hesperetin protected pancreatic β cells in vivo and in vitro, and this effect was independent of their direct antioxidant capacity. The further study found that the inhibition of thioredoxin-interacting protein (Txnip) expression regulated by histone acetylation was critical for the protective role of naringenin and hesperetin. Mechanistically, the histone acetylation inhibition by naringenin and hesperetin was achieved through regulating AMPK-mediated p300 inactivation. CONCLUSION These findings highlight flavanones and the phytomedicine rich in flavanones as important dietary supplements in protecting pancreatic β cells in advanced diabetes. In addition, targeting histone acetylation by phytomedicine is a potential strategy to delay the development and progression of diabetes.
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Affiliation(s)
- Si-Wei Wang
- Core Facility, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China
| | - Hao Sheng
- Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yong-Feng Bai
- Department of Clinical Laboratory, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China
| | - Yuan-Yuan Weng
- Department of Clinical Laboratory, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China
| | - Xue-Yu Fan
- Department of Clinical Laboratory, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China
| | - Fang Zheng
- Core Facility, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China
| | - Jing-Qi Fu
- School of Public Health, China Medical University, Shenyang 110122, China.
| | - Feng Zhang
- Core Facility, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China; Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Clinical Laboratory, Quzhou Hospital, Zhejiang University School of Medicine, Quzhou 324000, China.
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Cao X, He W, Pang Y, Cao Y, Qin A. Redox-dependent and independent effects of thioredoxin interacting protein. Biol Chem 2021; 401:1215-1231. [PMID: 32845855 DOI: 10.1515/hsz-2020-0181] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/13/2020] [Indexed: 12/12/2022]
Abstract
Thioredoxin interacting protein (TXNIP) is an important physiological inhibitor of the thioredoxin (TXN) redox system in cells. Regulation of TXNIP expression and/or activity not only plays an important role in redox regulation but also exerts redox-independent physiological effects that exhibit direct pathophysiological consequences including elevated inflammatory response, aberrant glucose metabolism, cellular senescence and apoptosis, cellular immunity, and tumorigenesis. This review provides a brief overview of the current knowledge concerning the redox-dependent and independent roles of TXNIP and its relevance to various disease states. The implications for the therapeutic targeting of TXNIP will also be discussed.
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Affiliation(s)
- Xiankun Cao
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhizaoju Road, Shanghai, 200011,People's Republic of China
| | - Wenxin He
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhizaoju Road, Shanghai, 200011,People's Republic of China
| | - Yichuan Pang
- Department of Oral Surgery, Shanghai Key Laboratory of Stomatology, National Clinical Research Center of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011,People's Republic of China
| | - Yu Cao
- Department of Orthopaedics and Institute of Precision Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhizaoju Road, Shanghai, 200011,People's Republic of China
| | - An Qin
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhizaoju Road, Shanghai, 200011,People's Republic of China
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Li J, Cheng P, Li S, Zhao P, Han B, Ren X, Zhong JL, Lloyd MD, Pourzand C, Holmgren A, Lu J. Selenium Status in Diet Affects Acetaminophen-Induced Hepatotoxicity via Interruption of Redox Environment. Antioxid Redox Signal 2021; 34:1355-1367. [PMID: 32517496 DOI: 10.1089/ars.2019.7909] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aims: Drug-induced liver injury, especially acetaminophen (APAP)-induced liver injury, is a leading cause of liver failure worldwide. Mouse models were used to evaluate the effect of microelement selenium levels on the cellular redox environment and consequent hepatotoxicity of APAP. Results: APAP treatment affected mouse liver selenoprotein thioredoxin reductase (TrxR) activity and glutathione (GSH) level in a dose- and time-dependent manner. Decrease of mouse liver TrxR activity and glutathione level was an early event, and occurred concurrently with liver damage. The decreases in the GSH/glutathione disulfide form (GSSG) ratio and TrxR activity, and the increase of protein S-glutathionylation were correlated with the APAP-induced hepatotoxicity. Moreover, in APAP-treated mice both mild deprivation and excess supplementation with selenium increased the severity of liver injury compared with those observed in mice with normal dietary selenium levels. An increase in the oxidation state of the TrxR-mediated system, including cytosolic thioredoxin1 (Trx1) and peroxiredoxin1/2 (Prx1/2), and mitochondrial Trx2 and Prx3, was found in the livers from mice reared on selenium-deficient and excess selenium-supplemented diets upon APAP treatment. Innovation: This work demonstrates that both Trx and GSH systems are susceptible to APAP toxicity in vivo, and that the thiol-dependent redox environment is a key factor in determining the extent of APAP-induced hepatotoxicity. Dietary selenium and selenoproteins play critical roles in protecting mice against APAP overdose. Conclusion: APAP treatment in mice interrupts the function of the Trx and GSH systems, which are the main enzymatic antioxidant systems, in both the cytosol and mitochondria. Dietary selenium deficiency and excess supplementation both increase the risk of APAP-induced hepatotoxicity.
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Affiliation(s)
- Jing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Ping Cheng
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Shoufeng Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Pengfei Zhao
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Bing Han
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Xiaoyuan Ren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Julia Li Zhong
- College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, China
| | - Matthew D Lloyd
- Drug & Target Discovery, Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, United Kingdom
| | - Charareh Pourzand
- Medicines Design, Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, United Kingdom
| | - Arne Holmgren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Jun Lu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing, China
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Zhang J, Duan D, Osama A, Fang J. Natural Molecules Targeting Thioredoxin System and Their Therapeutic Potential. Antioxid Redox Signal 2021; 34:1083-1107. [PMID: 33115246 DOI: 10.1089/ars.2020.8213] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Significance: Thioredoxin (Trx) and thioredoxin reductase are two core members of the Trx system. The system bridges the gap between the universal reducing equivalent NADPH and various biological molecules and plays an essential role in maintaining cellular redox homeostasis and regulating multiple cellular redox signaling pathways. Recent Advance: In recent years, the Trx system has been well documented as an important regulator of many diseases, especially tumorigenesis. Thus, the development of potential therapeutic molecules targeting the system is of great significance for disease treatment. Critical Issues: We herein first discuss the physiological functions of the Trx system and the role that the Trx system plays in various diseases. Then, we focus on the introduction of natural small molecules with potential therapeutic applications, especially the anticancer activity, and review their mechanisms of pharmacological actions via interfering with the Trx system. Finally, we further discuss several natural molecules that harbor therapeutic potential and have entered different clinical trials. Future Directions: Further studies on the functions of the Trx system in multiple diseases will not only improve our understanding of the pathogenesis of many human disorders but also help develop novel therapeutic strategies against these diseases. Antioxid. Redox Signal. 34, 1083-1107.
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Affiliation(s)
- Junmin Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, and School of Pharmacy, Lanzhou University, Lanzhou, China
- Shaanxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji, China
| | - Dongzhu Duan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, and School of Pharmacy, Lanzhou University, Lanzhou, China
- Shaanxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji, China
| | - Alsiddig Osama
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, and School of Pharmacy, Lanzhou University, Lanzhou, China
- Shaanxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji, China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, and School of Pharmacy, Lanzhou University, Lanzhou, China
- Shaanxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji, China
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El Feky SE, Ghany Megahed MA, Abd El Moneim NA, Zaher ER, Khamis SA, Ali LMA. Cytotoxic, chemosensitizing and radiosensitizing effects of curcumin based on thioredoxin system inhibition in breast cancer cells: 2D vs. 3D cell culture system. Exp Ther Med 2021; 21:506. [PMID: 33791015 DOI: 10.3892/etm.2021.9937] [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: 01/25/2020] [Accepted: 10/15/2020] [Indexed: 12/17/2022] Open
Abstract
Targeting the thioredoxin/thioredoxin reductase (Trx/TrxR) system is a promising strategy to overcome cancer resistance to conventional therapy. The present study investigated the effect of curcumin on the Trx/TrxR system either alone or in combination with chemotherapy, or radiotherapy in human MCF-7 breast cancer cells seeded in 2 and 3D culture systems. Cell viability, thioredoxin reductase 1 (TrxR1) activity, and the genetic expression of Trx, TrxR1, Bcl2 and BAX genes were studied. The findings showed that the mode of culture significantly affected the response of cancer cells to different treatment modalities, as well as their gene expression patterns. Curcumin treatment resulted in a reduction of breast cancer cell proliferation and induction of apoptosis, an effect that may be mediated by manipulating Trx system components, mainly Trx expression, and to a lesser extent TrxR1 expression and concentration. Furthermore, curcumin increased the sensitivity of breast cancer cells to chemotherapy and radiotherapy by reducing Trx and TrxR1 expression levels. Thus, curcumin may have a potential role as a dose-modifying agent that can be used either to sensitize resistant cells to therapy or to reduce the dose of these therapeutic agents.
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Affiliation(s)
- Shaymaa Essam El Feky
- Department of Radiation Sciences, Medical Research Institute, University of Alexandria, Alexandra 21561, Egypt
| | - Magda Abdel Ghany Megahed
- Department of Biochemistry, Medical Research Institute, University of Alexandria, Alexandra 21561, Egypt
| | - Nadia Ahmed Abd El Moneim
- Department of Cancer Management and Research, Medical Research Institute, University of Alexandria, Alexandra 21561, Egypt
| | - Ebtsam Rizq Zaher
- Department of Radiation Sciences, Medical Research Institute, University of Alexandria, Alexandra 21561, Egypt
| | - Shadwa Ahmed Khamis
- Department of Biochemistry, Medical Research Institute, University of Alexandria, Alexandra 21561, Egypt
| | - Lamiaa Mohamed Ahmed Ali
- Department of Biochemistry, Medical Research Institute, University of Alexandria, Alexandra 21561, Egypt
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Altun S, Budak H. The protective effect of the cardiac thioredoxin system on the heart in the case of iron overload in mice. J Trace Elem Med Biol 2021; 64:126704. [PMID: 33370714 DOI: 10.1016/j.jtemb.2020.126704] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/27/2020] [Accepted: 12/10/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Iron, which is essential for many vital biological processes, causes significant clinical pathologies in the case of its deficiency or excess. Cardiovascular protective pathways are activated by iron therapy. However, determining the appropriate iron concentration is essential to protect heart tissue from iron-induced oxidative stress. The thioredoxin system is one of the antioxidant systems that protect cells against oxidative stress. Moreover, it allows the binding of many transcription factors for apoptosis, myocardial protection, the stimulation of cell proliferation, and angiogenesis processes, especially the regulation of the cardiovascular system. This study's goal was to understand how iron overload affects the gene and protein levels of the thioredoxin system in the mouse heart. METHODS BALB/c mice were randomly separated into two groups. The iron overload group was administered with intraperitoneal injections of an iron-dextran solution twice a week for three weeks. In parallel, the control group was intraperitoneally given Dextran 5 solution. The total iron content, the total GSH level, the reduced glutathione/oxidized glutathione (GSH/GSSG) ratio, and thioredoxin reductase 1 (TXNRD1) activity were demonstrated spectroscopically. Changes in the iron metabolism marker genes and thioredoxin system genes were examined by qPCR. The quantitative protein expression of TXNRD1 and thioredoxin-interacting protein (TXNIP) was examined by western blotting. RESULTS The iron content of the heart increased in the iron overload group. The expression of hepcidin (Hamp) and ferroportin (Fpn) increased with iron overload. However, decreased expression was observed for ferritin (Fth). No changes were revealed in the GSH level and GSH/GSSG ratio. The gene expression of thioredoxin 1 (Txn1), Txnrd1, and Txnip did not change. TXNRD1 activity and protein expression increased significantly, while the protein expression of TXNIP decreased significantly. CONCLUSION In the case of iron overload, the cardiac thioredoxin system is affected by the protein level rather than the gene level. The amount and duration of iron overload used in this study may be considered as a starting point for further studies to determine appropriate conditions for the iron therapy of cardiovascular diseases.
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Affiliation(s)
- Sevda Altun
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey; Rafet Kayış Faculty of Engineering, Department of Genetic and Bioengineering, Alaaddin Keykubat University, Antalya, Turkey
| | - Harun Budak
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey.
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Campos JM, Martínez LC, Plata-Rueda A, Weigand W, Zanuncio JC, Serrão JE. Insecticide potential of two saliva components of the predatory bug Podisus nigrispinus (Heteroptera: Pentatomidae) against Spodoptera frugiperda (Lepidoptera: Noctuidae) caterpillars. TOXIN REV 2021. [DOI: 10.1080/15569543.2020.1868008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | | | - Angelica Plata-Rueda
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Wolfgang Weigand
- Friedrich-Schiller-Universitaet Jena Institut fuer Anorganische und Analytische Chemie, Jena, Germany
| | - José Cola Zanuncio
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brazil
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Sönmez Aydın F, Hukkamlı B, Budak H. Coaction of hepatic thioredoxin and glutathione systems in iron overload-induced oxidative stress. J Biochem Mol Toxicol 2021; 35:e22704. [PMID: 33393188 DOI: 10.1002/jbt.22704] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 10/12/2020] [Accepted: 12/12/2020] [Indexed: 01/15/2023]
Abstract
In the present study, we demonstrate the coaction of thioredoxin and glutathione (GSH) systems in mouse liver against iron overload-induced oxidative stress (OS). Mice were injected intraperitoneally with an iron dextran solution twice a week for 3 weeks. Iron accumulation in mouse liver was demonstrated spectroscopically. To confirm the iron overload model in the liver, the increased gene expression levels of hepcidin (Hamp), ferroportin (Fpn1), and ferritin (Fth1), which regulate iron trafficking, were observed by a quantitative polymerase chain reaction. In the case of iron overload, the GSH level and the reduced glutathione/oxidized glutathione ratio, which represents a marker of OS, decreased significantly. An increase in the malondialdehyde level, one of the final products of the lipid peroxidation process, was observed. The gene expression of the thioredoxin system, including thioredoxin (Trx1) and thioredoxin reductase (TrxR1), was examined. Though TrxR1 expression decreased, no changes were observed in Trx1. The enzyme activity and semiquantitative protein expression of TRXR1 increased. The activity of GSH reductase and GSH peroxidase increased in the iron overload group. The gene and protein expressions of thioredoxininteracting protein, which is an indicator of the commitment of the cell to apoptosis, were elevated significantly. The increased protein expression of Bcl-2-related X protein and CASPASE-3, which is an indicator of apoptosis, increased significantly. In conclusion, excess iron accumulation in mouse liver tissue causes OS, which affects the redox state of the thioredoxin and GSH systems, inducing cell apoptosis and also ferroptosis due to increased lipid peroxidation and the depletion of GSH level.
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Affiliation(s)
- Feyza Sönmez Aydın
- Department of Molecular Biology and Genetics, Science Faculty, Atatürk University, Erzurum, Turkey
| | - Berna Hukkamlı
- Department of Molecular Biology and Genetics, Science Faculty, Atatürk University, Erzurum, Turkey.,Department of Chemical and Chemical Processing Technologies, Boyabat Vocational School, Sinop University, Sinop, Turkey
| | - Harun Budak
- Department of Molecular Biology and Genetics, Science Faculty, Atatürk University, Erzurum, Turkey
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Dereven'kov IA, Makarov SV, Molodtsov PA, Makarova AS. Studies on the reaction between reduced riboflavin and selenocystine. INT J CHEM KINET 2021. [DOI: 10.1002/kin.21430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sergei V. Makarov
- Ivanovo State University of Chemistry and Technology Ivanovo 153000 Russia
| | - Pavel A. Molodtsov
- Ivanovo State University of Chemistry and Technology Ivanovo 153000 Russia
| | - Anna S. Makarova
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences Ivanovo 153045 Russia
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66
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Seco-Cervera M, González-Cabo P, Pallardó FV, Romá-Mateo C, García-Giménez JL. Thioredoxin and Glutaredoxin Systems as Potential Targets for the Development of New Treatments in Friedreich's Ataxia. Antioxidants (Basel) 2020; 9:antiox9121257. [PMID: 33321938 PMCID: PMC7763308 DOI: 10.3390/antiox9121257] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/11/2022] Open
Abstract
The thioredoxin family consists of a small group of redox proteins present in all organisms and composed of thioredoxins (TRXs), glutaredoxins (GLRXs) and peroxiredoxins (PRDXs) which are found in the extracellular fluid, the cytoplasm, the mitochondria and in the nucleus with functions that include antioxidation, signaling and transcriptional control, among others. The importance of thioredoxin family proteins in neurodegenerative diseases is gaining relevance because some of these proteins have demonstrated an important role in the central nervous system by mediating neuroprotection against oxidative stress, contributing to mitochondrial function and regulating gene expression. Specifically, in the context of Friedreich’s ataxia (FRDA), thioredoxin family proteins may have a special role in the regulation of Nrf2 expression and function, in Fe-S cluster metabolism, controlling the expression of genes located at the iron-response element (IRE) and probably regulating ferroptosis. Therefore, comprehension of the mechanisms that closely link thioredoxin family proteins with cellular processes affected in FRDA will serve as a cornerstone to design improved therapeutic strategies.
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Affiliation(s)
- Marta Seco-Cervera
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
| | - Pilar González-Cabo
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
| | - Federico V. Pallardó
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
| | - Carlos Romá-Mateo
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
- Correspondence: (C.R.-M.); (J.L.G.-G.); Tel.: +34-963-864-646 (C.R.-M. & J.L.G.-G.)
| | - José Luis García-Giménez
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
- Correspondence: (C.R.-M.); (J.L.G.-G.); Tel.: +34-963-864-646 (C.R.-M. & J.L.G.-G.)
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Joardar N, Guevara-Flores A, Martínez-González JDJ, Sinha Babu SP. Thiol antioxidant thioredoxin reductase: A prospective biochemical crossroads between anticancer and antiparasitic treatments of the modern era. Int J Biol Macromol 2020; 165:249-267. [DOI: 10.1016/j.ijbiomac.2020.09.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 02/08/2023]
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Cismaru AL, Rudin D, Ibañez L, Liakoni E, Bonadies N, Kreutz R, Carvajal A, Lucena MI, Martin J, Sancho Ponce E, Molokhia M, Eriksson N, Krähenbühl S, Largiadèr CR, Haschke M, Hallberg P, Wadelius M, Amstutz U. Genome-Wide Association Study of Metamizole-Induced Agranulocytosis in European Populations. Genes (Basel) 2020; 11:genes11111275. [PMID: 33138277 PMCID: PMC7716224 DOI: 10.3390/genes11111275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/23/2020] [Accepted: 10/27/2020] [Indexed: 12/17/2022] Open
Abstract
Agranulocytosis is a rare yet severe idiosyncratic adverse drug reaction to metamizole, an analgesic widely used in countries such as Switzerland and Germany. Notably, an underlying mechanism has not yet been fully elucidated and no predictive factors are known to identify at-risk patients. With the aim to identify genetic susceptibility variants to metamizole-induced agranulocytosis (MIA) and neutropenia (MIN), we conducted a retrospective multi-center collaboration including cases and controls from three European populations. Association analyses were performed using genome-wide genotyping data from a Swiss cohort (45 cases, 191 controls) followed by replication in two independent European cohorts (41 cases, 273 controls) and a joint discovery meta-analysis. No genome-wide significant associations (p < 1 × 10−7) were observed in the Swiss cohort or in the joint meta-analysis, and no candidate genes suggesting an immune-mediated mechanism were identified. In the joint meta-analysis of MIA cases across all cohorts, two candidate loci on chromosome 9 were identified, rs55898176 (OR = 4.01, 95%CI: 2.41–6.68, p = 1.01 × 10−7) and rs4427239 (OR = 5.47, 95%CI: 2.81–10.65, p = 5.75 × 10−7), of which the latter is located in the SVEP1 gene previously implicated in hematopoiesis. This first genome-wide association study for MIA identified suggestive associations with biological plausibility that may be used as a stepping-stone for post-GWAS analyses to gain further insight into the mechanism underlying MIA.
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Affiliation(s)
- Anca Liliana Cismaru
- Department of Clinical Chemistry, Inselspital Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.L.C.); (C.R.L.)
- Graduate School for Cellular and Biomedical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Deborah Rudin
- Department of Clinical Pharmacology & Toxicology, University Hospital Basel, University of Basel, 4031 Basel, Switzerland; (D.R.); (S.K.)
- Department of Biomedicine, University of Basel, 4051 Basel, Switzerland
| | - Luisa Ibañez
- Clinical Pharmacology Service, Hospital Universitari Vall d’Hebron, Department of Pharmacology, Therapeutics and Toxicology, Autonomous University of Barcelona, Fundació Institut Català de Farmacología, 08035 Barcelona, Spain;
| | - Evangelia Liakoni
- Department of Clinical Pharmacology & Toxicology, Inselspital Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (E.L.); (M.H.)
- Institute of Pharmacology, University of Bern, 3012 Bern, Switzerland
| | - Nicolas Bonadies
- Department of Hematology and Central Hematology Laboratory, Inselspital Bern University Hospital, University of Bern, 3010 Bern, Switzerland;
| | - Reinhold Kreutz
- Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institut für Klinische Pharmakologie und Toxikologie, 10117 Berlin, Germany;
| | - Alfonso Carvajal
- Centro de Estudios sobre la Seguridad de los Medicamentos, Universidad de Valladolid, 47005 Valladolid, Spain;
| | - Maria Isabel Lucena
- Servicio Farmacologia Clinica, Instituto de Investigación Biomedica de Málaga, Hospital Universitario Virgen de la Victoria, Universidad de Málaga, 29010 Málaga, Spain;
| | - Javier Martin
- Instituto de Parasitología y Biomedicina Lopez-Neyra, Consejo Superior de Investigaciones Cientiíficas, 18016 Granada, Spain;
| | - Esther Sancho Ponce
- Servei d’Hematologia i Banc de Sang, Hospital General de Catalunya, 08190 Sant Cugat del Vallès, Spain;
| | - Mariam Molokhia
- Department of Population Health Sciences, King’s College London, London WC2R 2LS, UK;
| | - Niclas Eriksson
- Uppsala Clinical Research Center and Department of Medical Sciences, Uppsala University, 751 85 Uppsala, Sweden;
| | | | - Stephan Krähenbühl
- Department of Clinical Pharmacology & Toxicology, University Hospital Basel, University of Basel, 4031 Basel, Switzerland; (D.R.); (S.K.)
| | - Carlo R. Largiadèr
- Department of Clinical Chemistry, Inselspital Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.L.C.); (C.R.L.)
| | - Manuel Haschke
- Department of Clinical Pharmacology & Toxicology, Inselspital Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (E.L.); (M.H.)
- Institute of Pharmacology, University of Bern, 3012 Bern, Switzerland
| | - Pär Hallberg
- Department of Medical Sciences, Clinical Pharmacology and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden; (P.H.); (M.W.)
| | - Mia Wadelius
- Department of Medical Sciences, Clinical Pharmacology and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden; (P.H.); (M.W.)
| | - Ursula Amstutz
- Department of Clinical Chemistry, Inselspital Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.L.C.); (C.R.L.)
- Correspondence:
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Chen Y, Ning J, Cao W, Wang S, Du T, Jiang J, Feng X, Zhang B. Research Progress of TXNIP as a Tumor Suppressor Gene Participating in the Metabolic Reprogramming and Oxidative Stress of Cancer Cells in Various Cancers. Front Oncol 2020; 10:568574. [PMID: 33194655 PMCID: PMC7609813 DOI: 10.3389/fonc.2020.568574] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/18/2020] [Indexed: 12/11/2022] Open
Abstract
Thioredoxin-interacting protein (TXNIP) is a thioredoxin-binding protein that can mediate oxidative stress, inhibit cell proliferation, and induce apoptosis by inhibiting the function of the thioredoxin system. TXNIP is important because of its wide range of functions in cardiovascular diseases, neurodegenerative diseases, cancer, diabetes, and other diseases. Increasing evidence has shown that TXNIP expression is low in tumors and that it may act as a tumor suppressor in various cancer types such as hepatocarcinoma, breast cancer, and lung cancer. TXNIP is known to inhibit the proliferation of breast cancer cells by affecting metabolic reprogramming and can affect the invasion and migration of breast cancer cells through the TXNIP-HIF1α-TWIST signaling axis. TXNIP can also prevent the occurrence of bladder cancer by inhibiting the activation of ERK, which inhibits apoptosis in bladder cancer cells. In this review, we find that TXNIP can be regulated by binding to transcription factors or other binding proteins and can also be downregulated by epigenetic changes or miRNA. In addition, we also summarize emerging insights on TXNIP expression and its functional role in different kinds of cancers, as well as clarify its participation in metabolic reprogramming and oxidative stress in cancer cells, wherein it acts as a putative tumor suppressor gene to inhibit the proliferation, invasion, and migration of different tumor cells as well as promote apoptosis in these cells. TXNIP may therefore be of basic and clinical significance for finding novel molecular targets that can facilitate the diagnosis and treatment of malignant tumors.
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Affiliation(s)
- Yiting Chen
- Department of Oncology and Institute of Medical Sciences, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.,Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Jieling Ning
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Wenjie Cao
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Shuanglian Wang
- Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, China
| | - Tao Du
- Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, China
| | - Jiahui Jiang
- Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, China
| | - Xueping Feng
- Department of Oncology and Institute of Medical Sciences, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Bin Zhang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
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70
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Li KY, Xiang XJ, Song L, Chen J, Luo B, Wen QX, Zhong BR, Zhou GF, Deng XJ, Ma YL, Hu LT, Chen GJ. Mitochondrial TXN2 attenuates amyloidogenesis via selective inhibition of BACE1 expression. J Neurochem 2020; 157:1351-1365. [PMID: 32920833 DOI: 10.1111/jnc.15184] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 12/22/2022]
Abstract
Thioredoxin-2 (TXN2) is a mitochondrial protein and represents one of the intrinsic antioxidant enzymes. It has long been recognized that mitochondrial dysfunction and oxidative stress contribute to the pathogenesis of Alzheimer's disease (AD). We hypothesized that mitochondrial TXN2 might play a role in AD-like pathology. In this study, we found that in SH-SY5Y and HEK cells stably express full-length human amyloid-β precursor protein (HEK-APP), TXN2 silencing or over-expression selectively increased or decreased the transcription of beta-site amyloid precursor protein cleaving enzyme 1 (BACE1), respectively, without altering the protein levels of others enzymes involved in the catalytic processing of APP. As a result, β-amyloid protein (Aβ) levels were significantly decreased by TXN2. In addition, in cells treated with 3-nitropropionic acid (3-NP) that is known to increase reactive oxygen species (ROS) and promote mitochondrial dysfunction, TXN2 silencing resulted in further enhancement of BACE1 protein levels, suggesting a role of TXN2 in ROS removal. The downstream signaling might involve NFκB, as TXN2 reduced the phosphorylation of p65 and IκBα; and p65 knockdown significantly attenuated TXN2-mediated regulation of BACE1. Concomitantly, the levels of cellular ROS, apoptosis-related proteins and cell viability were altered by TXN2 silencing or over-expression. In APPswe/PS1E9 mice, an animal model of AD, the cortical and hippocampal TXN2 protein levels were decreased at 12 months but not at 6 months, suggesting an age-dependent decline. Collectively, TXN2 regulated BACE1 expression and amyloidogenesis via cellular ROS and NFκB signaling. TXN2 might serve as a potential target especially for early intervention of AD.
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Affiliation(s)
- Kun-Yi Li
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China.,Department of Neurology, the Second People's Hospital of Chengdu, Chengdu, China
| | - Xiao-Jiao Xiang
- Department of Nuclear Medicine, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Li Song
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Jian Chen
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Biao Luo
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Qi-Xin Wen
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Bi-Rou Zhong
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Gui-Feng Zhou
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Xiao-Juan Deng
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Yuan-Lin Ma
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Li-Tian Hu
- Department of Neurology, Nanchong Central Hospital, the Second Clinical College of North Sichuan Medical College, Nanchong, China
| | - Guo-Jun Chen
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
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Saneto RP. Mitochondrial diseases: expanding the diagnosis in the era of genetic testing. JOURNAL OF TRANSLATIONAL GENETICS AND GENOMICS 2020; 4:384-428. [PMID: 33426505 PMCID: PMC7791531 DOI: 10.20517/jtgg.2020.40] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mitochondrial diseases are clinically and genetically heterogeneous. These diseases were initially described a little over three decades ago. Limited diagnostic tools created disease descriptions based on clinical, biochemical analytes, neuroimaging, and muscle biopsy findings. This diagnostic mechanism continued to evolve detection of inherited oxidative phosphorylation disorders and expanded discovery of mitochondrial physiology over the next two decades. Limited genetic testing hampered the definitive diagnostic identification and breadth of diseases. Over the last decade, the development and incorporation of massive parallel sequencing has identified approximately 300 genes involved in mitochondrial disease. Gene testing has enlarged our understanding of how genetic defects lead to cellular dysfunction and disease. These findings have expanded the understanding of how mechanisms of mitochondrial physiology can induce dysfunction and disease, but the complete collection of disease-causing gene variants remains incomplete. This article reviews the developments in disease gene discovery and the incorporation of gene findings with mitochondrial physiology. This understanding is critical to the development of targeted therapies.
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Affiliation(s)
- Russell P. Saneto
- Center for Integrative Brain Research, Neuroscience Institute, Seattle, WA 98101, USA
- Department of Neurology/Division of Pediatric Neurology, Seattle Children’s Hospital/University of Washington, Seattle, WA 98105, USA
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72
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TXNIP/TBP-2: A Master Regulator for Glucose Homeostasis. Antioxidants (Basel) 2020; 9:antiox9080765. [PMID: 32824669 PMCID: PMC7464905 DOI: 10.3390/antiox9080765] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/09/2020] [Accepted: 08/10/2020] [Indexed: 02/07/2023] Open
Abstract
Identification of thioredoxin binding protein-2 (TBP-2), which is currently known as thioredoxin interacting protein (TXNIP), as an important binding partner for thioredoxin (TRX) revealed that an evolutionarily conserved reduction-oxidation (redox) signal complex plays an important role for pathophysiology. Due to the reducing activity of TRX, the TRX/TXNIP signal complex has been shown to be an important regulator for redox-related signal transduction in many types of cells in various species. In addition to its role in redox-dependent regulation, TXNIP has cellular functions that are performed in a redox-independent manner, which largely rely on their scaffolding function as an ancestral α-Arrestin family. Both the redox-dependent and -independent TXNIP functions serve as regulatory pathways in glucose metabolism. This review highlights the key advances in understanding TXNIP function as a master regulator for whole-body glucose homeostasis. The potential for therapeutic advantages of targeting TXNIP in diabetes and the future direction of the study are also discussed.
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The interplay between oxidative stress and bioenergetic failure in neuropsychiatric illnesses: can we explain it and can we treat it? Mol Biol Rep 2020; 47:5587-5620. [PMID: 32564227 DOI: 10.1007/s11033-020-05590-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 06/12/2020] [Indexed: 12/12/2022]
Abstract
Nitro-oxidative stress and lowered antioxidant defences play a key role in neuropsychiatric disorders such as major depression, bipolar disorder and schizophrenia. The first part of this paper details mitochondrial antioxidant mechanisms and their importance in reactive oxygen species (ROS) detoxification, including details of NO networks, the roles of H2O2 and the thioredoxin/peroxiredoxin system, and the relationship between mitochondrial respiration and NADPH production. The second part highlights and identifies the causes of the multiple pathological sequelae arising from self-amplifying increases in mitochondrial ROS production and bioenergetic failure. Particular attention is paid to NAD+ depletion as a core cause of pathology; detrimental effects of raised ROS and reactive nitrogen species on ATP and NADPH generation; detrimental effects of oxidative and nitrosative stress on the glutathione and thioredoxin systems; and the NAD+-induced signalling cascade, including the roles of SIRT1, SIRT3, PGC-1α, the FOXO family of transcription factors, Nrf1 and Nrf2. The third part discusses proposed therapeutic interventions aimed at mitigating such pathology, including the use of the NAD+ precursors nicotinamide mononucleotide and nicotinamide riboside, both of which rapidly elevate levels of NAD+ in the brain and periphery following oral administration; coenzyme Q10 which, when given with the aim of improving mitochondrial function and reducing nitro-oxidative stress in the brain, may be administered via the use of mitoquinone, which is in essence ubiquinone with an attached triphenylphosphonium cation; and N-acetylcysteine, which is associated with improved mitochondrial function in the brain and produces significant decreases in oxidative and nitrosative stress in a dose-dependent manner.
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74
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Ouyang Y, Li J, Peng Y, Huang Z, Ren Q, Lu J. The Role and Mechanism of Thiol-Dependent Antioxidant System in Bacterial Drug Susceptibility and Resistance. Curr Med Chem 2020; 27:1940-1954. [DOI: 10.2174/0929867326666190524125232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 01/24/2019] [Accepted: 02/21/2019] [Indexed: 12/16/2022]
Abstract
Antibiotics play an irreplaceable role in the prevention and treatment of bacterial infection
diseases. However, because of the improper use of antibiotics, bacterial resistance emerges as a major
challenge of public health all over the world. The small thiol molecules such as glutathione can directly
react and conjugate with some antibiotics, which thus contribute to drug susceptibility and resistance.
Recently, accumulating evidence shows that there is a close link between the antibacterial activities of
some antibiotics and Reactive Oxygen Species (ROS). Thioredoxin and glutathione systems are two
main cellular disulfide reductase systems maintaining cellular ROS level. Therefore, these two thioldependent
antioxidant systems may affect the antibiotic susceptibility and resistance. Microorganisms
are equipped with different thiol-dependent antioxidant systems, which make the role of thioldependent
antioxidant systems in antibiotic susceptibility and resistance is different in various bacteria.
Here we will focus on the review on the advances of the effects of thiol-dependent antioxidant system
in the bacterial antibiotic susceptibility and resistance.
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Affiliation(s)
- Yanfang Ouyang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Jing Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yi Peng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Zhijun Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Qiao Ren
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Jun Lu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
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Liu M, Liu C, Shen S, Liu J, Yin F. Geniposide inhibits glucolipotoxicity and cooperates with Txnip knockdown to potentiate cell adaption to endoplasmic reticulum stress in pancreatic beta cells. Cell Biol Int 2020; 44:1535-1543. [PMID: 32215982 DOI: 10.1002/cbin.11350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 03/09/2020] [Accepted: 03/19/2020] [Indexed: 11/09/2022]
Abstract
Thioredoxin-interacting protein (Txnip), a negative regulator of thioredoxin, has become an attractive therapeutic target to alleviate metabolic diseases. Our previous data demonstrated that geniposide improved glucose-stimulated insulin secretion by accelerating Txnip degradation and prevented the early-stage apoptosis of pancreatic β cells induced by palmitate, but the underlying mechanisms are still unclear. The objective of this study is to identify the role of Txnip in geniposide preventing the apoptosis of pancreatic β cells induced by high glucose and palmitate (HG/PA). The results revealed that geniposide attenuated HG/PA-induced cell apoptosis and the expression of Bax and caspase-3, while increasing mitochondrial membrane potential and the anti-apoptotic protein levels of heme-oxygenase-1 (HO-1) and Bcl-2 in INS-1 rat pancreatic β cells. Knockdown of the Txnip gene raised the levels of anti-apoptotic proteins HO-1 and Bcl-2 and geniposide potentiated the effect of Txnip when the INS-1 cells were challenged by HG/PA. Furthermore, geniposide enhanced the adoptive unfolded protein response by increasing the phosphorylation of PERK/eIF2α and IRE1α in HG/PA-treated INS-1 cells. The results together suggest that geniposide might be useful to antagonize glucolipotoxicity and Txnip might be a pleiotropic cellular factor in pancreatic β cells.
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Affiliation(s)
- Min Liu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing, 400054, China
| | - Chunyan Liu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing, 400054, China
| | - Shenli Shen
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing, 400054, China
| | - Jianhui Liu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing, 400054, China
| | - Fei Yin
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing, 400054, China
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76
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Cheng P, Liu H, Li Y, Pi P, Jiang Y, Zang S, Li X, Fu A, Ren X, Xu J, Holmgren A, Lu J. Inhibition of thioredoxin reductase 1 correlates with platinum-based chemotherapeutic induced tissue injury. Biochem Pharmacol 2020; 175:113873. [PMID: 32092292 DOI: 10.1016/j.bcp.2020.113873] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/20/2020] [Indexed: 12/14/2022]
Abstract
Platinum-containing drugs (PtDs; e.g. cisplatin, carboplatin, and oxaliplatin) have been widely used as anticancer reagents against various cancers. However, treatment with these drugs results in undesirable adverse effects with unknown mechanisms. Herein, we found a strong correlation between the inhibitory effects of PtDs on cytosolic thioredoxin reductase (TXNRD1) and tissue injury. Of the PtDs tested, cisplatin was found to be the most effective inhibitory PtD against TXRND1, causing the severest kidney injury. The initial inhibition of TXNRD1 in the kidney resulted from cisplatin-induced transcriptional activation of Nrf2-regulated genes including Txnrd1. However, the antioxidant responses in the kidney did not reverse the cisplatin-induced oxidation process. Nephrotoxicity was accompanied with an increase of protein glutathionylation and a cellular thiol redox environment oxidation. These results suggest that the changes of the cellular thiol-dependent redox environment regulated by TXNRD1 is a major event in the adverse effects of cisplatin in kidney.
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Affiliation(s)
- Ping Cheng
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Huan Liu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yinchuan Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Peiling Pi
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yu Jiang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Shaozhen Zang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Xiaorong Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Ailing Fu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Xiaoyuan Ren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-171 77 Stockholm, Sweden
| | - Jianqiang Xu
- School of Life and Pharmaceutical Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin 124221, China
| | - Arne Holmgren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-171 77 Stockholm, Sweden
| | - Jun Lu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
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77
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Links between cancer metabolism and cisplatin resistance. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 354:107-164. [PMID: 32475471 DOI: 10.1016/bs.ircmb.2020.01.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cisplatin is one of the most potent and widely used chemotherapeutic agent in the treatment of several solid tumors, despite the high toxicity and the frequent relapse of patients due to the onset of drug resistance. Resistance to chemotherapeutic agents, either intrinsic or acquired, is currently one of the major problems in oncology. Thus, understanding the biology of chemoresistance is fundamental in order to overcome this challenge and to improve the survival rate of patients. Studies over the last 30 decades have underlined how resistance is a multifactorial phenomenon not yet completely understood. Recently, tumor metabolism has gained a lot of interest in the context of chemoresistance; accumulating evidence suggests that the rearrangements of the principal metabolic pathways within cells, contributes to the sensitivity of tumor to the drug treatment. In this review, the principal metabolic alterations associated with cisplatin resistance are highlighted. Improving the knowledge of the influence of metabolism on cisplatin response is fundamental to identify new possible metabolic targets useful for combinatory treatments, in order to overcome cisplatin resistance.
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78
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Wang W, Wu RD, Chen P, Xu XJ, Shi XZ, Huang LH, Shao ZL, Guo W. Liraglutide combined with human umbilical cord mesenchymal stem cell transplantation inhibits beta-cell apoptosis via mediating the ASK1/JNK/BAX pathway in rats with type 2 diabetes. Diabetes Metab Res Rev 2020; 36:e3212. [PMID: 31411368 DOI: 10.1002/dmrr.3212] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 06/15/2019] [Accepted: 08/09/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Accumulating evidence suggests an association between beta-cell apoptosis and the ASK1/JNK/BAX pathway. The aim of this study was to investigate the effects of a combined therapy of liraglutide and human umbilical cord mesenchymal stem cells (hUC-MSCs) on the glucose metabolism and islet beta-cell apoptosis, and further explore its relationship to the ASK1/JNK/BAX pathway. METHOD Type 2 diabetes mellitus (T2DM) rat model was induced by a high-sugar and high-fat diet and intraperitoneal injection of low-dose streptozotocin (STZ) (30 mg/kg). Three days after STZ injection, diabetic rats were randomly treated with subcutaneous injection of liraglutide (200 μg/kg/12 h) for 8 weeks and or hUC-MSCs (1 × 106 /rat) at the first and fifth weeks. Diabetes-related physical and biochemical parameters, pancreatic histopathological changes, immunohistochemical staining, quantitative real-time polymerase chain reaction, and western blot were used to measure the expression of apoptosis signal-regulating kinase 1 (ASK1), Jun N-terminal kinase (JNK), Bcl-2 associated X protein (BAX), and B-cell lymphoma-2 (Bcl-2). RESULTS Eight weeks after liraglutide or human umbilical cord mesenchymal stem cell administration, FPG, HbA1c , glucagon, body weight, and pancreatic ASK1, JNK, and BAX mRNA and proteins were significantly decreased, and the levels of serum C-p, INS and GLP-1, ratio of insulin positive area, and Bcl-2 expression were significantly increased in three treatment groups compared with T2DM group (P<.05). CONCLUSION Liraglutide combined with hUC-MSCs improve glucose metabolism and inhibit islet beta-cell apoptosis in a ASK1/JNK/BAX pathway-dependent manner.
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Affiliation(s)
- Wei Wang
- Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Rong Dan Wu
- Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Pin Chen
- Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Xiang Jin Xu
- Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Xiao Zhi Shi
- Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Li Hong Huang
- Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Zhu Lin Shao
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
| | - Wen Guo
- Department of Endocrinology, Fuzhou General Hospital, Fuzhou, China
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Dong C, Zhou J, Wang P, Li T, Zhao Y, Ren X, Lu J, Wang J, Holmgren A, Zou L. Topical Therapeutic Efficacy of Ebselen Against Multidrug-Resistant Staphylococcus aureus LT-1 Targeting Thioredoxin Reductase. Front Microbiol 2020; 10:3016. [PMID: 32010088 PMCID: PMC6974526 DOI: 10.3389/fmicb.2019.03016] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 12/16/2019] [Indexed: 01/08/2023] Open
Abstract
As a thiol-dependent enzyme, thioredoxin reductase (TrxR) is a promising antibacterial drug target. Ebselen, an organo-selenium with well-characterized toxicology and pharmacology, was recently reported to have potent antibacterial activity against Staphylococcus aureus. In this paper, we demonstrated that ebselen has strong bactericidal activity against multidrug-resistant (MDR) S. aureus based on taking TrxR as a major target and disruption of the redox microenvironment. Further, the topical therapeutic efficacy of ebselen for staphylococcal skin infections was assessed in a rat model. Treatment with ebselen significantly reduced the bacterial load and the expression of pro-inflammatory cytokines tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and interleukin-1 beta (IL-1β) in S. aureus skin lesions; further, wound healing and pathological changes were obvious improved in ebselen-treated rats compare to controls. Finally, ebselen was found to sensitize S. aureus to curcumin, which may be due to their synergistic effects in inhibiting bacterial TrxR. Altogether, ebselen is an effective topical antibacterial agent in animal model of MDR S. aureus LT-1 skin infection. This may lay the foundation for further analysis and development of ebselen as an antibacterial agent for topical treatment of MDR staphylococcal infections.
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Affiliation(s)
- Chuanjiang Dong
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, China
| | - Jingxuan Zhou
- The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, China
| | - Peng Wang
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, China.,The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, China
| | - Tao Li
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, China
| | - Ying Zhao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Xiaoyuan Ren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jun Lu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Jun Wang
- The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, China.,Translational Neuroscience & Neural Regeneration and Repair Institute/Institute of Cell Therapy, The People's Hospital of China Three Gorges University, Yichang, China
| | - Arne Holmgren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Lili Zou
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, China
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80
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Amara I, Timoumi R, Annabi E, Di Rosa G, Scuto M, Najjar MF, Calabrese V, Abid-Essefi S. Di (2-ethylhexyl) phthalate targets the thioredoxin system and the oxidative branch of the pentose phosphate pathway in liver of Balb/c mice. ENVIRONMENTAL TOXICOLOGY 2020; 35:78-86. [PMID: 31486570 DOI: 10.1002/tox.22844] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/13/2019] [Accepted: 07/21/2019] [Indexed: 06/10/2023]
Abstract
Di (2-ethylhexyl) phthalate (DEHP) is a plasticizer that gives flexibility to various polyvinyl chloride products. It is a pollutant easily released into the environment and can cause many adverse effects to living organisms including hepatotoxicity. The thioredoxin system is a determining factor in the redox balance maintaining in the liver, which is a vulnerable tissue of reactive oxygen species overproduction because of its high energy needs. In order to determine if the thioredoxin system is a target in the development of DEHP hepatotoxicity, Balb/c mice were administered with DEHP intraperitoneally daily for 30 days. Results demonstrated that after DEHP exposure, biochemical profile changes were observed. This phthalate causes oxidative damage through the induction of lipid peroxydation as well as the increase of superoxide dismutase and catalase activities. As new evidence provided in this study, we demonstrated that the DEHP affected the thioredoxin system by altering the expression and the activity of thioredoxin (Trx) and thioredoxin Reductase (TrxR1). The two enzyme activities of the oxidative phase of the pentose phosphate pathway: Glucose-6-phosphate dehydrogenase and 6-Phosphogluconate dehydrogenase were also affected by this phthalate. This leads to a decrease in the level of nicotinamide adenine dinucleotide phosphate used by the TrxR1 to maintain the regeneration of the reduced Trx. We also demonstrated that such effects can be responsible of DEHP-induced DNA damage.
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Affiliation(s)
- Ines Amara
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds, University of Monastir, Monastir, Tunisia
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Rim Timoumi
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds, University of Monastir, Monastir, Tunisia
| | - Emna Annabi
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds, University of Monastir, Monastir, Tunisia
| | - Gabriele Di Rosa
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Maria Scuto
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Mohamed F Najjar
- Laboratory of Biochemistry-Toxicology, Monastir University Hospital, University of Monastir, Monastir, Tunisia
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Salwa Abid-Essefi
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds, University of Monastir, Monastir, Tunisia
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81
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Park DJ, Kang JB, Shah FA, Jin YB, Koh PO. Quercetin Attenuates Decrease of Thioredoxin Expression Following Focal Cerebral Ischemia and Glutamate-induced Neuronal Cell Damage. Neuroscience 2019; 428:38-49. [PMID: 31874239 DOI: 10.1016/j.neuroscience.2019.11.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 12/27/2022]
Abstract
Quercetin is a bioactive flavonoid which abundantly exists in vegetables and fruits. Quercetin exerts a neuroprotective effect against cerebral ischemia. Thioredoxin acts as antioxidant by regulating redox signaling. This study investigated whether quercetin regulates thioredoxin expression in focal cerebral ischemia and glutamate-induced neuronal cell death. Male Sprague Dawley rats (210-230 g) were intraperitoneally injected with vehicle or quercetin (10 mg/kg) 1 h prior to middle cerebral artery occlusion (MCAO). Cerebral cortex was collected 24 h after MCAO. MCAO led to neurological movement deficits, brain edema, and serious histopathological damages in cerebral cortex, and quercetin alleviated these damages following MCAO. We observed the change of thioredoxin expression in MCAO animals with quercetin using proteomic approach, reverse-transcription PCR, and Western blot analyses. Thioredoxin expression decreased in vehicle-treated MCAO animals, while quercetin attenuated this decrease. Moreover, quercetin treatment alleviated the decrease in the number of thioredoxin-positive cells in cerebral cortex of MCAO animals. Furthermore, immunoprecipitation analysis demonstrated that interaction of apoptosis signal-regulating kinase 1 (ASK1) and thioredoxin was decreased in MCAO animals with vehicle, while quercetin prevented MCAO-induced decrease in these binding. In addition, quercetin also alleviated the reduction of cell viability and the decrease in thioredoxin expression in glutamate-treated hippocampal cell line and primary cultures of cortical neurons. However in thioredoxin-silenced cortical neuron, anti-apoptotic effect of quercetin was decreased. Thus, changes of thioredoxin expression by quercetin may contribute to the neuroprotective effect of quercetin in focal cerebral ischemia. Our findings suggest that quercetin mediates its neuroprotective function by regulation of thioredoxin expression and maintenance of interaction between ASK1 and thioredoxin.
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Affiliation(s)
- Dong-Ju Park
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinjudaero, Jinju 52828, South Korea
| | - Ju-Bin Kang
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinjudaero, Jinju 52828, South Korea
| | - Fawad-Ali Shah
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinjudaero, Jinju 52828, South Korea
| | - Yeung-Bae Jin
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KIRBB), Cheongju 28116, South Korea
| | - Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinjudaero, Jinju 52828, South Korea.
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82
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Plasma activity of Thioredoxin Reductase as a Novel Biomarker in Gastric Cancer. Sci Rep 2019; 9:19084. [PMID: 31836775 PMCID: PMC6910980 DOI: 10.1038/s41598-019-55641-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/18/2019] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) is one of the leading malignancies around the world. Identification of novel and efficient biomarkers for GC diagnosis and evaluation of therapeutic efficiency could improve the therapeutic strategy in future clinical application. This study aims to evaluate the levels of plasma thioredoxin reductase (TrxR) activity in GC patients to confirm its validity and efficacy in GC diagnosis and evaluation of therapeutic efficiency. 923 cases were enrolled in the current study. In the group of GC patients before clinical intervention, plasma TrxR activity [9.09 (7.96, 10.45) U/mL] was significantly higher than in healthy controls [3.69 (2.38, 5.32) U/mL]. The threshold of TrxR activity for GC diagnosis was set at 7.34 U/mL with a sensitivity of 85.5% and a specificity of 97.9%. In GC patients after chemotherapy, plasma TrxR activity was remarkably higher in patients with progressive disease or uncontrolled condition [10.07 (8.19, 11.02) U/mL] compared with patients with complete or partial response [7.12 (6.08, 8.37) U/mL] in response to chemotherapy. TrxR activity displayed the higher efficiency to distinguish between GC patients with two distinct clinical outcomes than carcinoembryonic antigen (CEA), cancer antigen 72-4 (CA72-4) and cancer antigen 19-9 (CA19-9). Moreover, combination of TrxR, CEA, CA72-4 and CA19-9 was demonstrated to be more effective in both GC diagnosis and evaluation of therapeutic efficiency than was each biomarker individually. Together, plasma TrxR activity was identified as a novel and efficient biomarker of GC, both in diagnosis and monitoring of therapeutic efficiency in response to chemotherapy.
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83
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Shu N, Hägglund P, Cai H, Hawkins CL, Davies MJ. Modification of Cys residues in human thioredoxin-1 by p-benzoquinone causes inhibition of its catalytic activity and activation of the ASK1/p38-MAPK signalling pathway. Redox Biol 2019; 29:101400. [PMID: 31926625 PMCID: PMC6926358 DOI: 10.1016/j.redox.2019.101400] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 01/27/2023] Open
Abstract
Quinones can modify biological molecules through both redox-cycling reactions that yield radicals (semiquinone, superoxide and hydroxyl) and via covalent adduction to nucleophiles (e.g. thiols and amines). Kinetic data indicate that Cys residues in GSH and proteins are major targets. In the studies reported here, the interactions of a prototypic quinone compound, p-benzoquinone (BQ), with the key redox protein, thioredoxin-1 (Trx1) were examined. BQ binds covalently with isolated Trx1 forming quinoprotein adducts, resulting in a concentration-dependent loss of enzyme activity and crosslink formation. Mass spectrometry peptide mass mapping data indicate that BQ forms adducts with all of the Trx1 Cys residues. Glutathione (GSH) reacts competitively with BQ, and thereby modulates the loss of activity and crosslink formation. Exposure of macrophage-like (J774A.1) cells to BQ results in a dose-dependent loss of Trx and thioredoxin reductase (TrxR) activities, quinoprotein formation, and a decrease in GSH levels without a concomitant increase in oxidized glutathione. GSH depletion aggravates the loss of Trx and TrxR activity. These data are consistent with adduction of GSH to BQ being a primary protective pathway. Reaction of BQ with Trx in cells resulted in the activation of apoptosis signal-regulating kinase 1 (ASK1), and p38 mitogen-activated protein kinase (MAPK) leading to apoptotic cell death. These data suggest that BQ reacts covalently with Cys residues in Trx, including at the active site, leading to enzyme inactivation and protein cross-linking. Modification of the Cys residues in Trx also results in activation of the ASK1/p38-MAPK signalling pathway and promotion of apoptotic cell death. Quinone (e.g. p-benzoquinone, BQ) toxicity is linked to Michael adduction reactions. Adduction of BQ to Cys residues in proteins are rapid (≤105 M−1 s−1) and selective. BQ reaction with Cys inactivates thioredoxin (Trx) and yields quinone- and disulfide-linked dimers. GSH reacts competitively with BQ and modulates damage, without GSSG formation. BQ activates ASK1 and p38 pathways and induced apoptosis in cells via Trx damage.
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Affiliation(s)
- Nan Shu
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Denmark
| | - Per Hägglund
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Denmark
| | - Huan Cai
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Denmark
| | - Clare L Hawkins
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Denmark
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Denmark.
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84
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Shu N, Cheng Q, Arnér ESJ, Davies MJ. Inhibition and crosslinking of the selenoprotein thioredoxin reductase-1 by p-benzoquinone. Redox Biol 2019; 28:101335. [PMID: 31590044 PMCID: PMC6812298 DOI: 10.1016/j.redox.2019.101335] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/23/2019] [Accepted: 09/26/2019] [Indexed: 11/03/2022] Open
Abstract
Quinones are common in nature, and often cytotoxic. Their proposed toxicity mechanisms involve redox cycling with radical generation, and/or reactions with nucleophiles, such as protein cysteine (Cys) residues, forming adducts via Michael addition reactions. The selenenyl anion of selenocysteine (Sec) is a stronger nucleophile, more prevalent at physiological pH, and more reactive than the corresponding thiolate anion of Cys. We therefore hypothesized that Sec residues should be readily modified by quinones and with potential consequences for the structure and function of selenoproteins. Here, we report data on the interaction of p-benzoquinone (BQ) with the selenoprotein thioredoxin reductase-1 (TrxR1), which exposes an accessible Sec residue upon physiological reduction by NADPH. Our results reveal that BQ targets NADPH-reduced TrxR1 and inhibits its activity using 5,5′-dithiobis(2-nitrobenzoic acid) or juglone as model substrates, consistent with the targeting of both the Cys and Sec residues of TrxR1. In the absence of NADPH, BQ modified the non-catalytic Cys residues, leading to subunit crosslinking, mainly through disulfides, which also resulted in some loss of activity. This crosslinking was time-dependent and independent of the Sec residue. Addition of NADPH after BQ pre-treatment could resolve the disulfide-linked crosslinking. TrxR activity loss was also observed upon incubation of J774A.1 cells or cell lysates with BQ. These data suggest that BQ readily targets TrxR1, albeit in a rather complex manner, which results in structural changes and loss of enzyme activity. We suggest that TrxR1 targeting can explain some of the cytotoxicity of BQ, and potentially also that of other quinone compounds.
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Affiliation(s)
- Nan Shu
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Qing Cheng
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Elias S J Arnér
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Michael J Davies
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark.
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85
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Pereira C, Rodrigues IS, Pereira LMG, Lisboa J, Pinto RD, Araújo L, Oliveira P, Benz R, Dos Santos NMS, do Vale A. Role of AIP56 disulphide bond and its reduction by cytosolic redox systems for efficient intoxication. Cell Microbiol 2019; 22:e13109. [PMID: 31454143 DOI: 10.1111/cmi.13109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/08/2019] [Accepted: 08/21/2019] [Indexed: 12/14/2022]
Abstract
Apoptosis-inducing protein of 56 kDa (AIP56) is a major virulence factor of Photobacterium damselae subsp. piscicida, a gram-negative pathogen that infects warm water fish species worldwide and causes serious economic losses in aquacultures. AIP56 is a single-chain AB toxin composed by two domains connected by an unstructured linker peptide flanked by two cysteine residues that form a disulphide bond. The A domain comprises a zinc-metalloprotease moiety that cleaves the NF-kB p65, and the B domain is involved in binding and internalisation of the toxin into susceptible cells. Previous experiments suggested that disruption of AIP56 disulphide bond partially compromised toxicity, but conclusive evidences supporting the importance of that bond in intoxication were lacking. Here, we show that although the disulphide bond of AIP56 is dispensable for receptor recognition, endocytosis, and membrane interaction, it needs to be intact for efficient translocation of the toxin into the cytosol. We also show that the host cell thioredoxin reductase-thioredoxin system is involved in AIP56 intoxication by reducing the disulphide bond of the toxin at the cytosol. The present study contributes to a better understanding of the molecular mechanisms operating during AIP56 intoxication and reveals common features shared with other AB toxins.
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Affiliation(s)
- Cassilda Pereira
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Inês S Rodrigues
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Liliana M G Pereira
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Johnny Lisboa
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Rute D Pinto
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Leonor Araújo
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Pedro Oliveira
- EPIUnit, ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Roland Benz
- Department of Life Sciences and Chemistry, Jacobs University, Bremen, Germany
| | - Nuno M S Dos Santos
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Ana do Vale
- Fish Immunology and Vaccinology Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
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86
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Li J, Zuo X, Cheng P, Ren X, Sun S, Xu J, Holmgren A, Lu J. The production of reactive oxygen species enhanced with the reduction of menadione by active thioredoxin reductase. Metallomics 2019; 11:1490-1497. [PMID: 31359011 DOI: 10.1039/c9mt00133f] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cytosolic thioredoxin reductase (TXNRD1) is an important selenoprotein that participates in the reduction of thioredoxin and many other redox-related substrates. The enhancement of ROS production to cause cancer cell death is an effective anticancer strategy. Herein, we found that menadione substantially increased ROS generation via interaction with TXNRD1. To elucidate the mechanism behind this, various TXNRD1 mutant proteins were used to investigate the relationship between ROS production and the reaction between enzymes and menadione. A mutation at the C-terminal active site -GCUG of TXNRD1 to -GSSG or -GC, or the N-terminal active site C59S, C64S, or the deletion of the C-terminal 16 amino acid residues caused the loss of TXNRD1 activity needed for the reduction of menadione and therefore resulted in the loss of the ROS production ability of menadione. In contrast, the mutation of -GCUG to -GCCG resulted in an increase in the TXNRD1 activity towards the reduction of menadione, thus leading to an increase in ROS production. The co-treatment of the TXNRD1 inhibitor aurothioglucose and menadione could significantly alleviate the efficiency of ROS generation in vitro and increase the viability of A549 cells. Moreover, menadione could be reduced by the glutathione system and caused ROS production with less efficiency. These results demonstrate that TXNRD1 can serve as an effective source to generate ROS, which may provide a novel anticancer method based on the use of menadione.
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Affiliation(s)
- Jing Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Xin Zuo
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Ping Cheng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Xiaoyuan Ren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Shibo Sun
- School of Life Science and Medicine & Panjin Institute of Industrial Technology Dalian University of Technology, Panjin 124221, China
| | - Jianqiang Xu
- School of Life Science and Medicine & Panjin Institute of Industrial Technology Dalian University of Technology, Panjin 124221, China
| | - Arne Holmgren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Jun Lu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
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87
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Wang X, Dawod A, Nachliely M, Harrison JS, Danilenko M, Studzinski GP. Differentiation agents increase the potential AraC therapy of AML by reactivating cell death pathways without enhancing ROS generation. J Cell Physiol 2019; 235:573-586. [PMID: 31245853 DOI: 10.1002/jcp.28996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/17/2019] [Accepted: 05/22/2019] [Indexed: 01/03/2023]
Abstract
Acute myeloid leukemia (AML) has a poor prognosis and requires new approaches for treatment. We have reported that a combination of vitamin D-based cell differentiation agents (doxercalciferol/carnosic acid [D2/CA]) added following the cytotoxic drug arabinocytosine (AraC) increases AML cell death (CD), a model for improved therapy of this disease. Because AraC-induced CD is known to involve reactive oxygen species (ROS) generation, here we investigated if the modulation of cellular REDOX status plays a role in the enhancement of cell death (ECD) by D2/CA. Using thiol antioxidants, such as N-acetyl cysteine (NAC), we found a significant inhibition of ECD, yet this occurred in the absence of any detectable change in cellular ROS levels. In contrast, NAC reduced the vitamin D receptor (VDR) abundance and its signaling of ECD. Importantly, VDR knockdown and NAC similarly inhibited ECD without producing an additive effect. Thus, the proposed post-AraC therapy may be compromised by agents that reduce VDR levels in AML blasts.
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Affiliation(s)
- Xuening Wang
- Department of Pathology, Immunology & Laboratory Medicine, Rutgers New Jersey Medical School, State University of New Jersey, Newark, New Jersey
| | - Alaa Dawod
- Department of Clinical Biochemistry & Pharmacology, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Matan Nachliely
- Department of Clinical Biochemistry & Pharmacology, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Jonathan S Harrison
- Division of Hematology and Oncology, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Michael Danilenko
- Department of Clinical Biochemistry & Pharmacology, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - George P Studzinski
- Department of Pathology, Immunology & Laboratory Medicine, Rutgers New Jersey Medical School, State University of New Jersey, Newark, New Jersey
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88
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Chasapis CT, Makridakis M, Damdimopoulos AE, Zoidakis J, Lygirou V, Mavroidis M, Vlahou A, Miranda-Vizuete A, Spyrou G, Vlamis-Gardikas A. Implications of the mitochondrial interactome of mammalian thioredoxin 2 for normal cellular function and disease. Free Radic Biol Med 2019; 137:59-73. [PMID: 31018154 DOI: 10.1016/j.freeradbiomed.2019.04.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 04/15/2019] [Indexed: 12/23/2022]
Abstract
Multiple thioredoxin isoforms exist in all living cells. To explore the possible functions of mammalian mitochondrial thioredoxin 2 (Trx2), an interactome of mouse Trx2 was initially created using (i) a monothiol mouse Trx2 species for capturing protein partners from different organs and (ii) yeast two hybrid screens on human liver and rat brain cDNA libraries. The resulting interactome consisted of 195 proteins (Trx2 included) plus the mitochondrial 16S RNA. 48 of these proteins were classified as mitochondrial (MitoCarta2.0 human inventory). In a second step, the mouse interactome was combined with the current four-membered mitochondrial sub-network of human Trx2 (BioGRID) to give a 53-membered human Trx2 mitochondrial interactome (52 interactor proteins plus the mitochondrial 16S RNA). Although thioredoxins are thiol-employing disulfide oxidoreductases, approximately half of the detected interactions were not due to covalent disulfide bonds. This finding reinstates the extended role of thioredoxins as moderators of protein function by specific non-covalent, protein-protein interactions. Analysis of the mitochondrial interactome suggested that human Trx2 was involved potentially in mitochondrial integrity, formation of iron sulfur clusters, detoxification of aldehydes, mitoribosome assembly and protein synthesis, protein folding, ADP ribosylation, amino acid and lipid metabolism, glycolysis, the TCA cycle and the electron transport chain. The oxidoreductase functions of Trx2 were verified by its detected interactions with mitochondrial peroxiredoxins and methionine sulfoxide reductase. Parkinson's disease, triosephosphate isomerase deficiency, combined oxidative phosphorylation deficiency, and lactate dehydrogenase b deficiency are some of the diseases where the proposed mitochondrial network of Trx2 may be implicated.
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Affiliation(s)
- Christos T Chasapis
- Institute of Chemical Engineering Sciences (ICE-HT), Foundation for Research and Technology, Hellas (FORTH), Platani 26504, Greece
| | | | - Anastassios E Damdimopoulos
- Department of Biosciences and Nutrition, Center for Innovative Medicine (CIMED), Karolinska Institutet, Huddinge, Sweden
| | - Jerome Zoidakis
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Vasiliki Lygirou
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Manolis Mavroidis
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Antonia Vlahou
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Antonio Miranda-Vizuete
- Redox Homeostasis Group, Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013 Sevilla, Spain
| | - Giannis Spyrou
- Department of Clinical and Experimental Medicine, Division of Clinical Chemistry, Linköping University, S-581 85 Linköping, Sweden
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89
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Wang H, Jiang H, Corbet C, de Mey S, Law K, Gevaert T, Feron O, De Ridder M. Piperlongumine increases sensitivity of colorectal cancer cells to radiation: Involvement of ROS production via dual inhibition of glutathione and thioredoxin systems. Cancer Lett 2019; 450:42-52. [PMID: 30790679 DOI: 10.1016/j.canlet.2019.02.034] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 02/08/2019] [Accepted: 02/14/2019] [Indexed: 01/19/2023]
Abstract
Piperlongumine (PL), naturally synthesized in long pepper, is known to selectively kill tumor cells via perturbation of reactive oxygen species (ROS) homeostasis. ROS are the primary effector molecules of radiation, and increase of ROS production by pharmacological modulation is known to enhance radioresponse. We therefore investigated the radiosensitizing effect of PL in colorectal cancer cells (CT26 and DLD-1) and CT26 tumor-bearing mice. Firstly, we found that PL induced excessive production of ROS due to depletion of glutathione and inhibition of thioredoxin reductase. Secondly, PL enhanced both the intrinsic and hypoxic radiosensitivity of tumor cells, linked to ROS-mediated increase of DNA damage, G2/M cell cycle arrest, and inhibition of cellular respiration. Finally, the radiosensitizing effect of PL was verified in vivo. PL improved the tumor response to both single and fractionated radiation, resulting in a significant increase of survival rate of tumor-bearing mice, while it was ineffective on its own. In line with in vitro findings, enhanced radioresponse is associated with inhibition of antioxidant systems. In conclusion, our results suggest that PL could be a potential radiosensitizer in colorectal cancer.
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Affiliation(s)
- Hui Wang
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Heng Jiang
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Cyril Corbet
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Sven de Mey
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Kalun Law
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Thierry Gevaert
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Olivier Feron
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Mark De Ridder
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium.
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90
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Jia JJ, Geng WS, Wang ZQ, Chen L, Zeng XS. The role of thioredoxin system in cancer: strategy for cancer therapy. Cancer Chemother Pharmacol 2019; 84:453-470. [DOI: 10.1007/s00280-019-03869-4] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 05/04/2019] [Indexed: 01/16/2023]
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91
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Zhang J, Hu L, Wang H, Zhi J, Hou X, Wu Y, Zheng X, Gao M. Functional analysis and clinical significance of the isocitrate dehydrogenase 2 gene in papillary thyroid carcinoma. Cancer Manag Res 2019; 11:3765-3777. [PMID: 31118795 PMCID: PMC6503344 DOI: 10.2147/cmar.s194920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 03/12/2019] [Indexed: 12/18/2022] Open
Abstract
Objective: Mitochondrial NADP+-dependent isocitrate dehydrogenase 2 (IDH2) is a major producer of mitochondrial NADPH. IDH2-related research has focused on its mutation mechanism and its clinical significance, but the role of wild-type IDH2 in carcinoma remains controversial. Altered IDH2 levels have been identified in several types of carcinomas. However, the significance and expression of IDH2 in thyroid cancer remains unknown. Methods: We examined the expression of IDH2 in thyroid cancer and adjacent normal tissues using quantitative real-time PCR (qRT-PCR), immunohistochemical (IHC) staining analyses, and western blot analysis with frozen tissues. The relationship between IDH2 and the clinicopathological features of thyroid cancer was analyzed by IHC. Subsequently, we investigated the function of wild-type IDH2 in thyroid cancer cells in vitro. Results: We found that the mRNA expression and protein levels of IDH2 were higher in tumor than in adjacent tissues, when evaluated by qRT-PCR, western blot, and IHC analyses. Tumor size, T stage, lymph node metastasis, and TNM stage showed significant differences between the IDH2 high expression and low expression groups. Multiple logistic regression analyses indicated that tumor size and IDH2 expression were significantly correlated with the occurrence of neck LNM. Furthermore, CCK8 levels, colony formation, and invasive cell number were decreased in the sh-IDH2 groups. The upregulation of IDH2 in thyroid cancer cells showed opposite effects. Conclusion: Our results indicated that IDH2 may play an important role in the development of thyroid cancer. IDH2 can be used as a potential biomarker for diagnosis and prognosis and may be a potential therapeutic target for thyroid cancer.
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Affiliation(s)
- Jun Zhang
- Department of Breast Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
| | - Linfei Hu
- Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
| | - Huijuan Wang
- Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
| | - Jingtai Zhi
- Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
| | - Xiukun Hou
- Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
| | - Yu Wu
- Department of Head and Neck Surgery, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, People's Republic of China
| | - Xiangqian Zheng
- Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
| | - Ming Gao
- Department of National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, People's Republic of China
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92
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Ren X, Santhosh SM, Coppo L, Ogata FT, Lu J, Holmgren A. The combination of ascorbate and menadione causes cancer cell death by oxidative stress and replicative stress. Free Radic Biol Med 2019; 134:350-358. [PMID: 30703479 DOI: 10.1016/j.freeradbiomed.2019.01.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/25/2019] [Accepted: 01/26/2019] [Indexed: 12/21/2022]
Abstract
The combination of ascorbate and menadione (VC:VK3 = 100:1) is an investigational treatment for cancer under clinical trials. Dehydroascorbic acid (DHA), the oxidized form of ascorbate, can be taken up by cells via glucose transporters, over-expressed in many cancer cells. It has been known that the combination of VC/VK3 kills cancer cells by inducing hydrogen peroxide (H2O2) via a redox cycling reaction. However, the mechanism has not been fully understood yet. Intracellularly, DHA is reduced to ascorbate by NADPH via GSH and glutaredoxin as well as by thioredoxin (Trx) and the selenoenzyme thioredoxin reductase (TrxR). These two systems are also critical as electron donors for ribonucleotide reductase (RNR), which produces deoxyribonucleotides de novo for DNA replication and DNA repair and is highly expressed in tumor cells. We found that RNR was highly sensitive to VC/VK3 in vitro with similar effects as observed with H2O2. In cancer cells, VC/VK3 inhibited RNR mainly by targeting its R2 subunit. More importantly, both the Trx and GSH systems were oxidized by the combination, which resulted in the loss of GSH, increased protein glutathionylation, and highly oxidized Trx1. The mechanism of cell death induced by VC/VK3 was also elucidated. We found that VC/VK3 inhibited glutathione peroxidase activity and led to an elevated level of lipid peroxidation, which triggered apoptosis-inducing factor (AIF) mediated cell death pathway. Therefore, the combination not only induced replicative stress by inhibiting RNR, but also oxidative stress by targeting anti-oxidant systems and triggered AIF-mediated cancer cell death.
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Affiliation(s)
- Xiaoyuan Ren
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177, Stockholm, Sweden
| | - Sebastin M Santhosh
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177, Stockholm, Sweden
| | - Lucia Coppo
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177, Stockholm, Sweden
| | - Fernando T Ogata
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177, Stockholm, Sweden
| | - Jun Lu
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177, Stockholm, Sweden; School of Pharmaceutical Sciences, Southwest University, 400715, Chongqing, China
| | - Arne Holmgren
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177, Stockholm, Sweden.
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93
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Wu KC, Cui JY, Liu J, Lu H, Zhong XB, Klaassen CD. RNA-Seq provides new insights on the relative mRNA abundance of antioxidant components during mouse liver development. Free Radic Biol Med 2019; 134:335-342. [PMID: 30659941 PMCID: PMC6588412 DOI: 10.1016/j.freeradbiomed.2019.01.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/11/2019] [Accepted: 01/14/2019] [Indexed: 11/18/2022]
Abstract
Mammals have developed a variety of antioxidant systems to protect them from the oxygen environment and toxic stimuli. Little is known about the mRNA abundance of antioxidant components during postnatal development of the liver. Therefore, the purpose of this study was to compare the mRNA abundance of antioxidant components during liver development. Livers from male C57BL/6J mice were collected at 12 ages from prenatal to adulthood. The transcriptome was determined by RNA-Seq with transcript abundance estimated by Cufflinks. RNA-Seq provided a complete, more accurate, and unbiased quantification of the transcriptome. Among 33 known antioxidant components examined, three ontogeny patterns of liver antioxidant components were observed: (1) Prenatal-enriched, in which the mRNAs decreased from fetal livers to adulthood, such as metallothionein and heme oxygenase-1; (2) adolescent-rich and relatively stable expression, such as peroxiredoxins; and (3) adult-rich, in which the mRNA increased with age, such as catalase and superoxide dismutase. Alternative splicing of several antioxidant genes, such as Keap1, Glrx2, Gpx3, and Txnrd1, were also detected by RNA-Seq. In summary, RNA-Seq revealed the relative abundance of hepatic antioxidant enzymes, which are important in protecting against the deleterious effects of oxidative stress.
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Affiliation(s)
- Kai Connie Wu
- Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS 66160, United States
| | - Julia Yue Cui
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, United States
| | - Jie Liu
- Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS 66160, United States
| | - Hong Lu
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Xiao-Bo Zhong
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, United States
| | - Curtis D Klaassen
- Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS 66160, United States.
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94
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Rozanov D, Cheltsov A, Nilsen A, Boniface C, Forquer I, Korkola J, Gray J, Tyner J, Tognon CE, Mills GB, Spellman P. Targeting mitochondria in cancer therapy could provide a basis for the selective anti-cancer activity. PLoS One 2019; 14:e0205623. [PMID: 30908483 PMCID: PMC6433232 DOI: 10.1371/journal.pone.0205623] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 02/25/2019] [Indexed: 12/29/2022] Open
Abstract
To determine the target of the recently identified lead compound NSC130362 that is responsible for its selective anti-cancer efficacy and safety in normal cells, structure-activity relationship (SAR) studies were conducted. First, NSC13062 was validated as a starting compound for the described SAR studies in a variety of cell-based viability assays. Then, a small library of 1,4-naphthoquinines (1,4-NQs) and quinoline-5,8-diones was tested in cell viability assays using pancreatic cancer MIA PaCa-2 cells and normal human hepatocytes. The obtained data allowed us to select a set of both non-toxic compounds that preferentially induced apoptosis in cancer cells and toxic compounds that induced apoptosis in both cancer and normal cells. Anti-cancer activity of the selected non-toxic compounds was confirmed in viability assays using breast cancer HCC1187 cells. Consequently, the two sets of compounds were tested in multiple cell-based and in vitro activity assays to identify key factors responsible for the observed activity. Inhibition of the mitochondrial electron transfer chain (ETC) is a key distinguishing activity between the non-toxic and toxic compounds. Finally, we developed a mathematical model that was able to distinguish these two sets of compounds. The development of this model supports our conclusion that appropriate quantitative SAR (QSAR) models have the potential to be employed to develop anti-cancer compounds with improved potency while maintaining non-toxicity to normal cells.
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Affiliation(s)
- Dmitri Rozanov
- Department of Molecular and Medical Genetics, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, United States of America
- * E-mail:
| | - Anton Cheltsov
- Q-MOL LLC, San Diego, California, United States of America
| | - Aaron Nilsen
- Medicinal Chemistry Core, Oregon Health and Science University, Portland, Oregon, United States of America
| | - Christopher Boniface
- Department of Molecular and Medical Genetics, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, United States of America
| | - Isaac Forquer
- Chemistry Department, Portland State University, Portland, Oregon, United States of America
| | - James Korkola
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon, United States of America
| | - Joe Gray
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon, United States of America
| | - Jeffrey Tyner
- Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, Oregon, United States of America
| | - Cristina E. Tognon
- Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, Oregon, United States of America
- Howard Hughes Medical Institute, Portland, Oregon, United States of America
- Division of Hematology & Medical Oncology, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Gordon B. Mills
- Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, Oregon, United States of America
| | - Paul Spellman
- Department of Molecular and Medical Genetics, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, United States of America
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95
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Onodera T, Momose I, Kawada M. Potential Anticancer Activity of Auranofin. Chem Pharm Bull (Tokyo) 2019; 67:186-191. [DOI: 10.1248/cpb.c18-00767] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takefumi Onodera
- Institute of Microbial Chemistry (BIKAKEN), Numazu, Microbial Chemistry Research Foundation
| | - Isao Momose
- Institute of Microbial Chemistry (BIKAKEN), Numazu, Microbial Chemistry Research Foundation
| | - Manabu Kawada
- Institute of Microbial Chemistry (BIKAKEN), Numazu, Microbial Chemistry Research Foundation
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96
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Tuladhar A, Hondal RJ, Colon R, Hernandez EL, Rein KS. Effectors of thioredoxin reductase: Brevetoxins and manumycin-A. Comp Biochem Physiol C Toxicol Pharmacol 2019; 217:76-86. [PMID: 30476593 PMCID: PMC7485175 DOI: 10.1016/j.cbpc.2018.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 02/03/2023]
Abstract
The activities of two effectors, brevetoxin (PbTx) and manumycin-A (Man-A), of thioredoxin reductase (TrxR) have been evaluated against a series of fourteen TrxR orthologs originating from mammals, insects and protists and several mutants. Man-A, a molecule with numerous electrophilic sites, forms a covalent adduct with most selenocystine (Sec)-containing TrxR enzymes. The evidence also demonstrates that Man-A can form covalent adducts with some non-Sec-containing enzymes. The activities of TrxR enzymes towards various substrates are moderated by Man-A either positively or negatively depending on the enzyme. In general, the reduction of substrates by Sec-containing TrxR is inhibited and NADPH oxidase activity is activated. For non-Sec-containing TrxR the effect of Man-A on the reduction of substrates is variable, but NADPH oxidase activity can be activated even in the absence of covalent modification of TrxR. The effect of PbTx is less pronounced. A smaller subset of enzymes is affected by PbTx. With a single exception, the activities of most of this subset are activated. Although both PbTx variants can react with selenocysteine, a stable covalent adduct is not formed with any of the TrxR enzymes. The key findings from this work are (i) the identification of an alternate mechanism of toxicity for the algal toxin brevetoxin (ii) the demonstration that covalent modification of TrxR is not a prerequisite for the activation of NADPH oxidase activity of TrxR and (iii) the identification of an inhibitor which can discriminate between cytosolic and mitochondrial TrxR.
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Affiliation(s)
- Anupama Tuladhar
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States
| | - Robert J Hondal
- Department of Biochemistry, 89 Beaumont Ave, Given Building Room 413B, Burlington, VT 05405, United States
| | - Ricardo Colon
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States
| | - Elyssa L Hernandez
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States
| | - Kathleen S Rein
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States.
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97
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Hu G, Zhang B, Zhou P, Hou Y, Jia H, Liu Y, Gan L, Zhang H, Mao Y, Fang J. Depletion of protein thiols and the accumulation of oxidized thioredoxin in Parkinsonism disclosed by a red-emitting and environment-sensitive probe. J Mater Chem B 2019; 7:2696-2702. [DOI: 10.1039/c8tb03101k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Protein sulfhydryl groups play a vital role in maintaining cellular redox homeostasis and protein functions and have attracted increasing interests for the selective detection of protein thiols over low-molecular-weight thiols (LMWTs).
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98
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Miligy IM, Gorringe KL, Toss MS, Al-Kawaz AA, Simpson P, Diez-Rodriguez M, Nolan CC, Ellis IO, Green AR, Rakha EA. Thioredoxin-interacting protein is an independent risk stratifier for breast ductal carcinoma in situ. Mod Pathol 2018; 31:1807-1815. [PMID: 29955142 DOI: 10.1038/s41379-018-0086-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 12/11/2022]
Abstract
Current clinicopathological parameters are useful predictors of breast ductal carcinoma in situ behavior, but they are insufficient to define high-risk patients for disease progression precisely. Thioredoxin-interacting protein (TXNIP) is a key player of oxidative stress. This study aims to evaluate the role of TXNIP as a predictor of ductal carcinoma in situ progression. Tissue microarrays from 776 pure ductal carcinoma in situ and 239 mixed ductal carcinoma in situ and invasive tumors were constructed. All patients were treated at a single institution with a long-term follow-up and TXNIP expression was assessed using immunohistochemistry. TXNIP expression was investigated in terms of associations with clinicopathological and molecular features and patient outcome. Loss/reduced cytoplasmic expression of TXNIP was associated with features of aggressiveness including high nuclear grade (p = 1.6 × 10-5), presence of comedo necrosis (p = 0.001), and estrogen receptor negative (ER-)/HER2- ductal carcinoma in situ (p = 4.6 × 10-5). Univariate analysis showed an inverse association between TXNIP expression and outcome in terms of shorter local recurrence-free survival (p = 0.009). Multivariable analyses showed that independent predictors of ductal carcinoma in situ recurrence were low TXNIP expression (p = 0.005, HR = 0.51, and 95% CI: 0.32-0.81), larger ductal carcinoma in situ size, and high nuclear grade. TXNIP functions as a tumor suppressor gene with loss of its expression associated with ductal carcinoma in situ recurrence. TXNIP can be used as a potentially useful marker in prognostic stratification of ductal carcinoma in situ for management decisions.
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Affiliation(s)
- Islam M Miligy
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK.,Histopathology Department, Faculty of Medicine, Menoufia University, Shibin El Kom, Egypt
| | - Kylie L Gorringe
- Cancer Genomics Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,The Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
| | - Michael S Toss
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK.,Histopathology Department, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
| | - Abdulbaqi A Al-Kawaz
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK
| | - Peter Simpson
- Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Maria Diez-Rodriguez
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK
| | - Christopher C Nolan
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK
| | - Ian O Ellis
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK
| | - Andrew R Green
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK
| | - Emad A Rakha
- Academic Pathology, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham City Hospital, Nottingham, UK. .,Histopathology Department, Faculty of Medicine, Menoufia University, Shibin El Kom, Egypt.
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99
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Ren X, Zou L, Lu J, Holmgren A. Selenocysteine in mammalian thioredoxin reductase and application of ebselen as a therapeutic. Free Radic Biol Med 2018; 127:238-247. [PMID: 29807162 DOI: 10.1016/j.freeradbiomed.2018.05.081] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/27/2018] [Accepted: 05/23/2018] [Indexed: 12/29/2022]
Abstract
Thioredoxin system is a ubiquitous disulfide reductase system evolutionarily conserved through all living organisms. It contains thioredoxin (Trx), thioredoxin reductase (TrxR) and NADPH. TrxR can use NADPH to reduce Trx which passes the reducing equivalent to its downstream substrates involved in various biomedical events, such as ribonucleotide reductase for deoxyribonucleotide and DNA synthesis, or peroxiredoxins for counteracting oxidative stress. Obviously, TrxR stays in the center of the system to maintain the electron flow. Mammalian TrxR contains a selenocysteine (Sec) in its active site, which is not present in the low molecular weight prokaryotic TrxRs. Due to the special property of Sec, mammalian TrxR employs a different catalytic mechanism from prokaryotic TrxRs and has a broader substrate-spectrum. On the other hand, Sec is easily targeted by electrophilic compounds which inhibits the TrxR activity and may turn TrxR into an NADPH oxidase. Ebselen, a synthetic seleno-compound containing selenazol, has been tested in several clinical studies. In mammalian cells, ebselen works as a GSH peroxidase mimic and mainly as a peroxiredoxin mimic via Trx and TrxR to scavenge hydrogen peroxide and peroxynitrite. In prokaryotic cells, ebselen is an inhibitor of TrxR and leads to elevation of reactive oxygen species (ROS). Recent studies have made use of the difference and developed ebselen as a potential antibiotic, especially in combination with silver which enables ebselen to kill multi-drug resistant Gram-negative bacteria. Collectively, Sec is important for the biological functions of mammalian TrxR and distinguishes it from prokaryotic TrxRs, therefore it is a promising drug target.
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Affiliation(s)
- Xiaoyuan Ren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Lili Zou
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Translational Neuroscience & Neural Regeneration and Repair Institute/Institute of Cell Therapy, The First Hospital of Yichang, Three Gorges University, 443000 Yichang, China
| | - Jun Lu
- School of Pharmaceutical Sciences, Southwest University, 400715 Chongqing, China
| | - Arne Holmgren
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
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100
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Yu B, Ma L, Jin J, Jiang F, Zhou G, Yan K, Liu Y. Mitochondrial toxicity induced by a thiourea gold(i) complex: mitochondrial permeability transition and respiratory deficit. Toxicol Res (Camb) 2018; 7:1081-1090. [PMID: 30542602 PMCID: PMC6240812 DOI: 10.1039/c8tx00169c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 08/29/2018] [Indexed: 12/20/2022] Open
Abstract
Gold(i) complexes have been widely used as antibacterial and antitumor agents because of their excellent biological activities. However, there are few reports on the study of gold(i) complexes at the subcellular level. Herein, we investigated the toxicity of a gold(i) complex (N,N'-disubstituted cyclic thiourea ligand) - AuTuCl - to isolated mitochondria via various methods. The results showed that AuTuCl induced mitochondrial swelling, elevated ROS generation and triggered collapse of the membrane potential, which indicated the induction of mitochondrial permeability transition (MPT). It also enhanced the permeability of H+ and K+ of the inner membrane and declined membrane fluidity, which might be the result of MPT. Moreover, AuTuCl impaired the mitochondrial respiratory chain and suppressed the activities of complexes II and IV in the respiratory chain. It also triggered the deficiency of ATP and the effusion of Cyt c, which were strictly related to respiration and apoptosis. These results indicated that AuTuCl severely affected the structure and function of mitochondria. It was proposed that MPT and impairment of the respiratory chain were responsible for the mitotoxicity of AuTuCl, thus causing energy deficiency and even apoptosis. This conceivable mechanism can serve as a clue for better understanding of the toxicology of AuTuCl.
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Affiliation(s)
- Bingqiong Yu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
| | - Long Ma
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
| | - Jiancheng Jin
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
| | - Fenglei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
| | - Gangcheng Zhou
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
| | - Kun Yan
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; Tel: +8627-68753465
- College of Chemistry and Material Sciences , Guangxi Teachers Education University , Nanning 530001 , P. R. China
- Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province , College of Chemistry and Chemical Engineering , Wuhan University of Science and Technology , Wuhan 430081 , P. R. China
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