1
|
Perween N, Pekhale K, Haval G, Bose GS, Mittal SPK, Ghaskadbi S, Ghaskadbi SS. Glutaredoxin 1 from Evolutionary Ancient Hydra: Characteristics of the Enzyme and Its Possible Functions in Cell. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:667-678. [PMID: 37331712 DOI: 10.1134/s0006297923050097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 06/20/2023]
Abstract
Glutaredoxin (Grx) is an antioxidant redox protein that uses glutathione (GSH) as an electron donor. Grx plays a crucial role in various cellular processes, such as antioxidant defense, control of cellular redox state, redox control of transcription, reversible S-glutathionylation of specific proteins, apoptosis, cell differentiation, etc. In the current study, we have isolated and characterized dithiol glutaredoxin from Hydra vulgaris Ind-Pune (HvGrx1). Sequence analysis showed that HvGrx1 belongs to the Grx family with the classical Grx motif (CPYC). Phylogenetic analysis and homology modeling revealed that HvGrx1 is closely related to Grx2 from zebrafish. HvGrx1 gene was cloned and expressed in Escherichia coli cells; the purified protein had a molecular weight of 11.82 kDa. HvGrx1 efficiently reduced β-hydroxyethyl disulfide (HED) with the temperature optimum of 25°C and pH optimum 8.0. HvGrx1 was ubiquitously expressed in all body parts of Hydra. Expression of HvGrx1 mRNA and enzymatic activity of HvGrx1 were significantly upregulated post H2O2 treatment. When expressed in human cells, HvGrx1 protected the cells from oxidative stress and enhanced cell proliferation and migration. Although Hydra is a simple invertebrate, HvGrx1 is evolutionary closer to its homologs from higher vertebrates (similar to many other Hydra proteins).
Collapse
Affiliation(s)
- Nusrat Perween
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India.
- Department of Zoology, M. C. E. Society's Abeda Inamdar Senior College, Pune, 411001, India
| | - Komal Pekhale
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India.
| | - Gauri Haval
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India.
- Department of Zoology, Abasaheb Garware College, Pune, 411004, India
| | - Ganesh S Bose
- Department of Biotechnology, Savitribai Phule Pune University, Pune, 411007, India.
| | - Smriti P K Mittal
- Department of Biotechnology, Savitribai Phule Pune University, Pune, 411007, India.
| | - Surendra Ghaskadbi
- Developmental Biology Group, Agharkar Research Institute, Pune, 411004, India.
| | - Saroj S Ghaskadbi
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India.
| |
Collapse
|
2
|
Li X, Ma Y, Wu J, Ni M, Chen A, Zhou Y, Dai W, Chen Z, Jiang R, Ling Y, Yao Q, Chen W. Thiol oxidative stress-dependent degradation of transglutaminase2 via protein S-glutathionylation sensitizes 5-fluorouracil therapy in 5-fluorouracil-resistant colorectal cancer cells. Drug Resist Updat 2023; 67:100930. [PMID: 36736043 DOI: 10.1016/j.drup.2023.100930] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023]
Abstract
5-Fluorouracil (5-Fu) is a first-line drug for colorectal cancer (CRC) therapy. However, the development of 5-Fu resistance limits its chemotherapeutic effectiveness and often leads to poor prognoses of CRC. Transglutaminase 2 (TGM2), a member of the transglutaminase family, is considered to be associated with chemoresistance through apoptotic prevention in various cancers including CRC. TGM2 was found to be overexpressed in two 5-Fu-resistant CRC cell lines and down-regulated by increased thiol oxidative stress induced by inhibition of glutathione reductase (GR). The present study aimed to explore the role of TGM2 in 5-Fu-resistant CRC and the mechanism of action by which the elevated thiol oxidative stress down-regulates TGM2 protein level. The results revealed that 5-Fu-resistance induced by overexpression of TGM2 in CRC cells was reversed through up-regulation of thiol oxidative stress. Knockdown of TGM2 increased the chemosensitivity of CRC cells to 5-Fu. Thiol oxidative stress potentially enhanced the therapeutic effect of 5-Fu in the resistant CRC cells by promotion of 5-Fu-induced apoptosis through down-regulation of TGM2. The elevated thiol oxidative stress increased the S-glutathionylation of TGM2 and led to proteasomal degradation of TGM2. Furthermore, Cys193 was identified as the S-glutathionylation site in TGM2, and its mutation resulted in thiol oxidative stress-mediated CRC cell apoptotic resistance. TGM2-induced EMT was also suppressed by the elevated thiol oxidative stress. A xenograft tumor model confirmed the effect of thiol oxidative stress in the reversal of 5-Fu resistance in CRC cells in vivo. TGM2 protein expression level was found to be significantly higher in human CRC specimens than in non-cancerous colorectal tissues. Taken together, the present data suggest an important role of TGM2 in 5-Fu resistance in CRC cells. Up-regulation of thiol oxidative stress could be a potential therapeutic approach for treating 5-Fu-resistant CRC and TGM2 may serve as a potential therapeutic target of thiol oxidative stress.
Collapse
Affiliation(s)
- Xia Li
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China; Key Laboratory of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer of Zhejiang Province, Hangzhou 310022, China; Zhejiang Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine on Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Yan Ma
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China
| | - Junzhou Wu
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Maowei Ni
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Aiping Chen
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Yun Zhou
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China
| | - Wumin Dai
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Zhongjian Chen
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Ruibin Jiang
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China; Key Laboratory of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer of Zhejiang Province, Hangzhou 310022, China
| | - Yutian Ling
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Qinghua Yao
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Department of Integrated Chinese and Western Medicine, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine on Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Wei Chen
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou 310022, China; Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China; Zhejiang Cancer Research Institute, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China; Key Laboratory of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer of Zhejiang Province, Hangzhou 310022, China; Zhejiang Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine on Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China.
| |
Collapse
|
3
|
Checconi P, Coni C, Limongi D, Baldelli S, Ciccarone F, De Angelis M, Mengozzi M, Ghezzi P, Ciriolo MR, Nencioni L, Palamara AT. Influenza virus replication is affected by glutaredoxin1-mediated protein deglutathionylation. FASEB J 2023; 37:e22729. [PMID: 36583688 DOI: 10.1096/fj.202201239rr] [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: 08/02/2022] [Revised: 12/01/2022] [Accepted: 12/12/2022] [Indexed: 12/31/2022]
Abstract
Several redox modifications have been described during viral infection, including influenza virus infection, but little is known about glutathionylation and this respiratory virus. Glutathionylation is a reversible, post-translational modification, in which protein cysteine forms transient disulfides with glutathione (GSH), catalyzed by cellular oxidoreductases and in particular by glutaredoxin (Grx). We show here that (i) influenza virus infection induces protein glutathionylation, including that of viral proteins such as hemagglutinin (HA); (ii) Grx1-mediated deglutathionylation is important for the viral life cycle, as its inhibition, either with an inhibitor of its enzymatic activity or by siRNA, decreases viral replication. Overall these data contribute to the characterization of the complex picture of redox regulation of the influenza virus replication cycle and could help to identify new targets to control respiratory viral infection.
Collapse
Affiliation(s)
- Paola Checconi
- Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Rome, Italy.,Laboratory of Microbiology of Chronic-Neurodegenerative Diseases, IRCCS San Raffaele Roma, Rome, Italy
| | - Cristiana Coni
- Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Rome, Italy.,Laboratory of Microbiology of Chronic-Neurodegenerative Diseases, IRCCS San Raffaele Roma, Rome, Italy
| | - Dolores Limongi
- Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Rome, Italy.,Laboratory of Microbiology of Chronic-Neurodegenerative Diseases, IRCCS San Raffaele Roma, Rome, Italy
| | - Sara Baldelli
- Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Rome, Italy.,Laboratory of Biochemistry of Aging, IRCCS San Raffaele Roma, Rome, Italy
| | - Fabio Ciccarone
- Laboratory of Biochemistry of Aging, IRCCS San Raffaele Roma, Rome, Italy.,Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Marta De Angelis
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Manuela Mengozzi
- Department of Clinical and Experimental Medicine, Brighton and Sussex Medical School, Brighton, UK
| | - Pietro Ghezzi
- Department of Biomolecular Sciences, University of Urbino, Urbino, Italy
| | - Maria Rosa Ciriolo
- Laboratory of Biochemistry of Aging, IRCCS San Raffaele Roma, Rome, Italy.,Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Lucia Nencioni
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Anna Teresa Palamara
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy.,Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| |
Collapse
|
4
|
Pang Y, Zhang H, Ai HW. Genetically Encoded Fluorescent Redox Indicators for Unveiling Redox Signaling and Oxidative Toxicity. Chem Res Toxicol 2021; 34:1826-1845. [PMID: 34284580 DOI: 10.1021/acs.chemrestox.1c00149] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Redox-active molecules play essential roles in cell homeostasis, signaling, and other biological processes. Dysregulation of redox signaling can lead to toxic effects and subsequently cause diseases. Therefore, real-time tracking of specific redox-signaling molecules in live cells would be critical for deciphering their functional roles in pathophysiology. Fluorescent protein (FP)-based genetically encoded redox indicators (GERIs) have emerged as valuable tools for monitoring the redox states of various redox-active molecules from subcellular compartments to live organisms. In the first section of this review, we overview the background, focusing on the sensing mechanisms of various GERIs. Next, we review a list of selected GERIs according to their analytical targets and discuss their key biophysical and biochemical properties. In the third section, we provide several examples which applied GERIs to understanding redox signaling and oxidative toxicology in pathophysiological processes. Lastly, a summary and outlook section is included.
Collapse
Affiliation(s)
- Yu Pang
- Center for Membrane and Cell Physiology, University of Virginia, Charlottesville, Virginia 22908, United States.,Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Hao Zhang
- Center for Membrane and Cell Physiology, University of Virginia, Charlottesville, Virginia 22908, United States.,Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Hui-Wang Ai
- Center for Membrane and Cell Physiology, University of Virginia, Charlottesville, Virginia 22908, United States.,Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia 22908, United States.,The UVA Cancer Center, University of Virginia, Charlottesville, Virginia 22908, United States
| |
Collapse
|
5
|
Zhao T, Zhang-Akiyama QM. Deficiency of Grx1 leads to high sensitivity of HeLaS3 cells to oxidative stress via excessive accumulation of intracellular oxidants including ROS. Free Radic Res 2020; 54:585-605. [PMID: 32892658 DOI: 10.1080/10715762.2020.1819994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oxidative stress is often initiated by excess reactive oxygen species (ROS) production, resulting in macromolecular damage, which is implicated in many disease states. Glutaredoxin 1 (Grx1) is an antioxidant enzyme that plays an important role in redox signaling and redox homeostasis. In the present study, we generated HeLaS3 cell lines deficient in Grx1 by the CRISPR/CAS9 system to clarify how Grx1 affects the physiological activities of HeLaS3 cells to respond to oxidative stress. First, the survival assay revealed that Grx1-deficient HeLaS3 cells were more sensitive to γ-ray irradiation, heat shock and H2O2 exposure than HeLaS3 wild-type cells. Next, the intracellular redox state was investigated using a fluorescent probe (2'-7'dichlorofluorescin diacetate), and the oxidized state of total proteins and a peroxidase Prx2 were measured by Western blot analysis. Exposure to γ-ray irradiation, heat shock and H2O2 significantly induced more accumulation of intracellular oxidants including ROS and higher levels of oxidized proteins in Grx1-deficient HeLaS3 cells. Furthermore, MitoSox Red staining demonstrated that Grx1 deficiency causes a higher level of oxidants production in mitochondria. Moreover, Grx1-deficient HeLaS3 cells had a higher cytochrome c level and higher apoptosis rate (Annexin-V/FITC and EthD-III staining assay) upon oxidative stress. These results suggested that Grx1 deficiency lead to mitochondrial redox homeostasis disruption and apoptotic cell death upon oxidative stress. In addition, the results of proliferation assay and MitoTracker staining assay (multinuclear cell formation rate) suggested that oxidative stress exposure inhibits cell proliferation maybe by affecting cytoplasmic division in Grx1-deficient HeLaS3 cells.
Collapse
Affiliation(s)
- Tingyi Zhao
- Laboratory of Stress Response Biology, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Qiu-Mei Zhang-Akiyama
- Laboratory of Stress Response Biology, Graduate School of Science, Kyoto University, Kyoto, Japan
| |
Collapse
|
6
|
Ito M, Tanaka T, Ishii T, Wakashima T, Fukui K, Nangaku M. Prolyl hydroxylase inhibition protects the kidneys from ischemia via upregulation of glycogen storage. Kidney Int 2019; 97:687-701. [PMID: 32033782 DOI: 10.1016/j.kint.2019.10.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 10/03/2019] [Accepted: 10/10/2019] [Indexed: 01/17/2023]
Abstract
Hypoxia-inducible factor (HIF) mediates protection via hypoxic preconditioning in both, in vitro and in vivo ischemia models. However, the underlying mechanism remains largely unknown. Prolyl hydroxylase domain proteins serve as the main HIF regulator via hydroxylation of HIFα leading to its degradation. At present, prolyl hydroxylase inhibitors including enarodustat are under clinical trials for the treatment of renal anemia. In an in vitro model of ischemia produced by oxygen-glucose deprivation of renal proximal tubule cells in culture, enarodustat treatment and siRNA knockdown of prolyl hydroxylase 2, but not of prolyl hydroxylase 1 or prolyl hydroxylase 3, significantly increased the cell viability and reduced the levels of reactive oxygen species. These effects were offset by the simultaneous knockdown of HIF1α. In another in vitro ischemia model induced by the blockade of oxidative phosphorylation with rotenone/antimycin A, enarodustat-enhanced glycogen storage prolonged glycolysis and delayed ATP depletion. Although autophagy is another possible mechanism of prolyl hydroxylase inhibition-induced cytoprotection, gene knockout of a key autophagy associated protein, Atg5, did not affect the protection. Enarodustat increased the expression of several enzymes involved in glycogen synthesis, including phosphoglucomutase 1, glycogen synthase 1, and 1,4-α glucan branching enzyme. Increased glycogen served as substrate for ATP and NADP production and augmented reduction of glutathione. Inhibition of glycogen synthase 1 and glutathione reductase nullified enarodustat's protective effect. Enarodustat also protected the kidneys in a rat ischemia reperfusion injury model and the protection was partially abrogated by inhibiting glycogenolysis. Thus, prolyl hydroxylase inhibition protects the kidney from ischemia via upregulation of glycogen synthesis.
Collapse
Affiliation(s)
- Marie Ito
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Tetsuhiro Tanaka
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan.
| | - Taisuke Ishii
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Takeshi Wakashima
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan; Biological and Pharmacological Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan
| | - Kenji Fukui
- Biological and Pharmacological Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan.
| |
Collapse
|
7
|
Wu X, Zhao G, He Y, Wang W, Yang CS, Zhang J. Pharmacological mechanisms of the anticancer action of sodium selenite against peritoneal cancer in mice. Pharmacol Res 2019; 147:104360. [PMID: 31326526 DOI: 10.1016/j.phrs.2019.104360] [Citation(s) in RCA: 20] [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: 04/26/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 12/15/2022]
Abstract
Peritoneal carcinomatosis has an extremely poor overall prognosis and remains one of the greatest oncologic challenges. Prior studies in mice show that sodium selenite administered intraperitoneally is highly effective in inhibiting cancer cells implanted in the peritoneal cavity. However, the pharmacological mechanism remains unclear. The present study revisited the therapeutic effect of selenite and elucidated its mechanism of action. We found that intraperitoneal delivery of selenite to cancer cells in the peritoneal cavity of mice rapidly and robustly killed the cancer cells, with a therapeutic efficacy higher than that of cisplatin. The action of selenite was associated with the following pharmacological mechanisms. 1) Favorable drug distribution: selenite increased selenium levels in the cancer cells by 250-fold, while in normal tissues only by 7-fold. 2) Optimal selenium form: selenite was converted in the cancer cells mainly into selenium nanoparticles (SeNPs), which are more efficient than selenite in producing reactive oxygen species (ROS). 3) Persistent hijacking of two pro-survival systems to generate ROS: selenite did not impair thioredoxin- and glutaredoxin-coupled glutathione systems, which facilitate SeNPs to generate ROS and caused severe organelle injury and apoptotic response in the cancer cells. Overall, these mechanisms tend to maximize the potential of selenite in producing ROS in cancer cells and underlie selenite as a candidate therapeutic agent for peritoneal carcinomatosis.
Collapse
Affiliation(s)
- Ximing Wu
- Laboratory of Redox Biology, School of Tea& Food Science and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Guangshan Zhao
- Laboratory of Redox Biology, School of Tea& Food Science and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Yufeng He
- Laboratory of Redox Biology, School of Tea& Food Science and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Wenping Wang
- Laboratory of Redox Biology, School of Tea& Food Science and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Jinsong Zhang
- Laboratory of Redox Biology, School of Tea& Food Science and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China.
| |
Collapse
|
8
|
O’Mara B, Gao Z, Kuruganti M, Mallett R, Nayar G, Smith L, Meyer JD, Therriault J, Miller C, Cisney J, Fann J. Impact of depth filtration on disulfide bond reduction during downstream processing of monoclonal antibodies from CHO cell cultures. Biotechnol Bioeng 2019; 116:1669-1683. [DOI: 10.1002/bit.26964] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/05/2019] [Accepted: 03/14/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Brian O’Mara
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Zhong‐Hua Gao
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Manju Kuruganti
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Robert Mallett
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Gautam Nayar
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Laura Smith
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Jeffrey D. Meyer
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Jon Therriault
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - Cameron Miller
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - John Cisney
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| | - John Fann
- BioProcess DevelopmentBristol‐Myers Squibb Co.Seattle Washington
| |
Collapse
|
9
|
Shokhina AG, Kostyuk AI, Ermakova YG, Panova AS, Staroverov DB, Egorov ES, Baranov MS, van Belle GJ, Katschinski DM, Belousov VV, Bilan DS. Red fluorescent redox-sensitive biosensor Grx1-roCherry. Redox Biol 2018; 21:101071. [PMID: 30576927 PMCID: PMC6302151 DOI: 10.1016/j.redox.2018.101071] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 12/05/2018] [Accepted: 12/06/2018] [Indexed: 01/08/2023] Open
Abstract
Redox-sensitive fluorescent proteins (roFPs) are a powerful tool for imaging intracellular redox changes. The structure of these proteins contains a pair of cysteines capable of forming a disulfide upon oxidation that affects the protein conformation and spectral characteristics. To date, a palette of such biosensors covers the spectral range from blue to red. However, most of the roFPs suffer from either poor brightness or high pH-dependency, or both. Moreover, there is no roRFP with the redox potential close to that of 2GSH/GSSG redox pair. In the present work, we describe Grx1-roCherry, the first red roFP with canonical FP topology and fluorescent excitation/emission spectra of typical RFP. Grx1-roCherry, with a midpoint redox potential of − 311 mV, is characterized by high brightness and increased pH stability (pKa 6.7). We successfully used Grx1-roCherry in combination with other biosensors in a multiparameter imaging mode to demonstrate redox changes in cells under various metabolic perturbations, including hypoxia/reoxygenation. In particular, using simultaneous expression of Grx1-roCherry and its green analog in various compartments of living cells, we demonstrated that local H2O2 production leads to compartment-specific and cell-type-specific changes in the 2GSH/GSSG ratio. Finally, we demonstrate the utility of Grx1-roCherry for in vivo redox imaging. We developed Grx1-roCherry, a novel redox-sensitive probe based on red FP. Grx1-roCherry is suitable for imaging in combination with other redox biosensors. Hypoxia/reoxygenation mostly affects redox state of mitochondrial GSH pool. Switch from glycolysis to ox.phosphorylation induces redox changes in HeLa Kyoto cells. Local H2O2 generation leads to compartment- and cell-type-specific redox changes.
Collapse
Affiliation(s)
- Arina G Shokhina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Alexander I Kostyuk
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Yulia G Ermakova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; European Molecular Biology Laboratory, Heidelberg 69117, Germany
| | - Anastasiya S Panova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Dmitry B Staroverov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Evgeny S Egorov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Mikhail S Baranov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Gijsbert J van Belle
- Institute for Cardiovascular Physiology, Georg August University Göttingen, Göttingen 37073, Germany
| | - Dörthe M Katschinski
- Institute for Cardiovascular Physiology, Georg August University Göttingen, Göttingen 37073, Germany
| | - Vsevolod V Belousov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; Institute for Cardiovascular Physiology, Georg August University Göttingen, Göttingen 37073, Germany; Pirogov Russian National Research Medical University, Moscow 117997, Russia.
| | - Dmitry S Bilan
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; Pirogov Russian National Research Medical University, Moscow 117997, Russia.
| |
Collapse
|
10
|
Electrophiles modulate glutathione reductase activity via alkylation and upregulation of glutathione biosynthesis. Redox Biol 2018; 21:101050. [PMID: 30654300 PMCID: PMC6348771 DOI: 10.1016/j.redox.2018.11.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/08/2018] [Accepted: 11/13/2018] [Indexed: 12/24/2022] Open
Abstract
Cells evolved robust homeostatic mechanisms to protect against oxidation or alkylation by electrophilic species. Glutathione (GSH) is the most abundant intracellular thiol, protects cellular components from oxidation and is maintained in a reduced state by glutathione reductase (GR). Nitro oleic acid (NO2-OA) is an electrophilic fatty acid formed under digestive and inflammatory conditions that both reacts with GSH and induces its synthesis upon activation of Nrf2 signaling. The effects of NO2-OA on intracellular GSH homeostasis were evaluated. In addition to upregulation of GSH biosynthesis, we observed that NO2-OA increased intracellular GSSG in an oxidative stress-independent manner. NO2-OA directly inhibited GR in vitro by covalent modification of the catalytic Cys61, with kon of (3.45 ± 0.04) × 103 M−1 s−1, koff of (4.4 ± 0.4) × 10−4 s−1, and Keq of (1.3 ± 0.1) × 10−7 M. Akin to NO2-OA, the electrophilic Nrf2 activators bardoxolone-imidazole (CDDO-Im), bardoxolone-methyl (CDDO-Me) and dimethyl fumarate (DMF) also upregulated GSH biosynthesis while promoting GSSG accumulation, but without directly inhibiting GR activity. In vitro assays in which GR was treated with increasing GSH concentrations and GSH depletion experiments in cells revealed that GR activity is finely regulated via product inhibition, an observation further supported by theoretical (kinetic modeling of cellular GSSG:GSH levels) approaches. Together, these results describe two independent mechanisms by which electrophiles modulate the GSH/GSSG couple, and provide a novel conceptual framework to interpret experimentally determined values of GSH and GSSG.
Collapse
|
11
|
Zhao G, Wu X, Chen P, Zhang L, Yang CS, Zhang J. Selenium nanoparticles are more efficient than sodium selenite in producing reactive oxygen species and hyper-accumulation of selenium nanoparticles in cancer cells generates potent therapeutic effects. Free Radic Biol Med 2018; 126:55-66. [PMID: 30056082 DOI: 10.1016/j.freeradbiomed.2018.07.017] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 12/26/2022]
Abstract
We have previously demonstrated that selenium nanoparticles (SeNPs) administered via oral route possess similar capacities of increasing selenoenzyme activities as the extensively examined sodium selenite, selenomethionine and methylselenocysteine, and yet display the lowest toxicity among these selenium compounds in mouse models. However, the low toxicity of SeNPs found in mammalian systems would lead to the interpretation that the punctate distribution of elemental selenium found in cultured cancer cells subjected to selenite treatment that triggers marked cytotoxicity represents a detoxifying mechanism. The present study found that SeNPs could be reduced by the thioredoxin- or glutaredoxin-coupled glutathione system to generate ROS. Importantly, ROS production by SeNPs in these systems was more efficient than by selenite, which has been recognized as the most redox-active selenium compound for ROS production. This is because multiple steps of reduction from selenite to selenide anion are required; whereas only a single step reduction from the elemental selenium atom to selenide anion is needed to trigger redox cycling with oxygen to produce ROS. We thus speculated that accumulation of SeNPs in cancer cells would result in a strong therapeutic effect, rather than serves a detoxification function. Indeed, we showed herein that preformed SeNPs generated a potent therapeutic effect in a mouse model due to rapid, massive and selective accumulation of SeNPs in cancer cells. Overall, for the first time, we demonstrate that SeNPs have a stronger pro-oxidant property than selenite and hyper-accumulation of SeNPs in cancer cells can generate potent therapeutic effects.
Collapse
Affiliation(s)
- Guangshan Zhao
- Laboratory of Redox Biology, School of Tea & Food Science, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Ximing Wu
- Laboratory of Redox Biology, School of Tea & Food Science, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Pingping Chen
- Laboratory of Redox Biology, School of Tea & Food Science, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Lingyun Zhang
- Laboratory of Redox Biology, School of Tea & Food Science, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China
| | - Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Jinsong Zhang
- Laboratory of Redox Biology, School of Tea & Food Science, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, China.
| |
Collapse
|
12
|
Di-2-pyridylhydrazone Dithiocarbamate Butyric Acid Ester Exerted Its Proliferative Inhibition against Gastric Cell via ROS-Mediated Apoptosis and Autophagy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:4950705. [PMID: 29765497 PMCID: PMC5889906 DOI: 10.1155/2018/4950705] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/22/2018] [Accepted: 02/07/2018] [Indexed: 12/28/2022]
Abstract
Diversified biological activities of dithiocarbamates have attracted widespread attention; improving their feature or exploring their potent action of mechanism is a hot topic in medicinal research. Herein, we presented a study on synthesis and investigation of a novel dithiocarbamate, DpdtbA (di-2-pyridylhydrazone dithiocarbamate butyric acid ester), on antitumor activity. The growth inhibition assay revealed that DpdtbA had important antitumor activity for gastric cancer (GC) cell lines (IC50 = 4.2 ± 0.52 μM for SGC-7901, 3.80 ± 0.40 μM for MGC-803). The next study indicated that growth inhibition is involved in ROS generation in mechanism; accordingly, the changes in mitochondrial membrane permeability, apoptotic genes, cytochrome c, bax, and bcl-2 were observed, implying that the growth inhibition of DpdtbA is involved in ROS-mediated apoptosis. On the other hand, the upregulated p53 upon DpdtbA treatment implied that p53 could also mediate the apoptosis. Yet the excess generation of ROS induced by DpdtbA led to cathepsin D translocation and increase of autophagic vacuoles and LC3-II, demonstrating that autophagy was also a contributor to growth inhibition. Further investigation showed that DpdtbA could induce cell cycle arrest at the G1 phase. This clearly indicated the growth inhibition of DpdtbA was via triggering ROS formation and evoking p53 response, consequently leading to alteration in gene expressions that are related to cell survival.
Collapse
|
13
|
Role of glutathione metabolism in host defense against Borrelia burgdorferi infection. Proc Natl Acad Sci U S A 2018; 115:E2320-E2328. [PMID: 29444855 DOI: 10.1073/pnas.1720833115] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Pathogen-induced changes in host cell metabolism are known to be important for the immune response. In this study, we investigated how infection with the Lyme disease-causing bacterium Borrelia burgdorferi (Bb) affects host metabolic pathways and how these metabolic pathways may impact host defense. First, metabolome analysis was performed on human primary monocytes from healthy volunteers, stimulated for 24 h with Bb at low multiplicity of infection (MOI). Pathway analysis indicated that glutathione (GSH) metabolism was the pathway most significantly affected by Bb Specifically, intracellular levels of GSH increased on average 10-fold in response to Bb exposure. Furthermore, these changes were found to be specific, as they were not seen during stimulation with other pathogens. Next, metabolome analysis was performed on serum samples from patients with early-onset Lyme disease in comparison with patients with other infections. Supporting the in vitro analysis, we identified a cluster of GSH-related metabolites, the γ-glutamyl amino acids, specifically altered in patients with Lyme disease, and not in other infections. Lastly, we performed in vitro experiments to validate the role for GSH metabolism in host response against Bb. We found that the GSH pathway is essential for Bb-induced cytokine production and identified glutathionylation as a potential mediating mechanism. Taken together, these data indicate a central role for the GSH pathway in the host response to Bb GSH metabolism and glutathionylation may therefore be important factors in the pathogenesis of Lyme disease and potentially other inflammatory diseases as well.
Collapse
|
14
|
Kekulandara DN, Nagi S, Seo H, Chow CS, Ahn YH. Redox-Inactive Peptide Disrupting Trx1-Ask1 Interaction for Selective Activation of Stress Signaling. Biochemistry 2018; 57:772-780. [PMID: 29261301 DOI: 10.1021/acs.biochem.7b01083] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Thioredoxin 1 (Trx1) and glutaredoxin 1 (Grx1) are two ubiquitous redox enzymes that are central for redox homeostasis but also are implicated in many other processes, including stress sensing, inflammation, and apoptosis. In addition to their enzymatic redox activity, a growing body of evidence shows that Trx1 and Grx1 play regulatory roles via protein-protein interactions with specific proteins, including Ask1. The currently available inhibitors of Trx1 and Grx1 are thiol-reactive electrophiles or disulfides that may suffer from low selectivity because of their thiol reactivity. In this report, we used a phage peptide library to identify a 7-mer peptide, 2GTP1, that binds to both Trx1 and Grx1. We further showed that a cell-permeable derivative of 2GTP1, TAT-2GTP1, disrupts the Trx1-Ask1 interaction, which induces Ask1 phosphorylation with subsequent activation of JNK, stabilization of p53, and reduced viability of cancer cells. Notably, as opposed to a disulfide-derived Trx1 inhibitor (PX-12), TAT-2GTP1 was selective for activating the Ask1 pathway without affecting other stress signaling pathways, such as endoplasmic reticulum stress and AMPK activation. Overall, 2GTP1 will serve as a useful probe for investigating protein interactions of Trx1.
Collapse
Affiliation(s)
- Dilini N Kekulandara
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Shima Nagi
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Hyosuk Seo
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Christine S Chow
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Young-Hoon Ahn
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
| |
Collapse
|
15
|
Li X, Jiang Z, Feng J, Zhang X, Wu J, Chen W. 2-Acetylamino-3-[4-(2-acetylamino-2-carboxyethylsulfanylcarbonylamino) phenyl carbamoylsulfanyl] propionic acid, a glutathione reductase inhibitor, induces G 2/M cell cycle arrest through generation of thiol oxidative stress in human esophageal cancer cells. Oncotarget 2017; 8:61846-61860. [PMID: 28977909 PMCID: PMC5617469 DOI: 10.18632/oncotarget.18705] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 05/22/2017] [Indexed: 02/07/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a highly malignant cancer with poor response to both of chemotherapy and radiotherapy. 2-Acetylamino-3-[4-(2-acetylamino-2-carboxyethylsulfanylcarbonylamino) phenyl carbamoylsulfanyl] propionic acid (2-AAPA), an irreversible inhibitor of glutathione reductase (GR), is able to induce intracellular oxidative stress, and has shown anticancer activity in many cancer cell lines. In this study, we investigated the effects of 2-AAPA on the cell proliferation, cell cycle and apoptosis and aimed to explore its mechanism of action in human esophageal cancer TE-13 cells. It was found that 2-AAPA inhibited growth of ESCC cells in a dose-dependent manner and it did not deplete reduced glutathione (GSH), but significantly increased the oxidized form glutathione (GSSG), resulting in decreased GSH/GSSG ratio. In consequence, significant reactive oxygen species (ROS) production was observed. The flow cytometric analysis revealed that 2-AAPA inhibited growth of esophageal cancer cells through arresting cell cycle in G2/M phase, but apoptosis-independent mechanism. The G2/M arrest was partially contributed by down-regulation of protein expression of Cdc-25c and up-regulation of phosphorylated Cdc-2 (Tyr15), Cyclin B1 (Ser147) and p53. Meanwhile, 2-AAPA-induced thiol oxidative stress led to increased protein S-glutathionylation, which resulted in α-tubulin S-glutathionylation-dependent depolymerization of microtubule in the TE-13 cells. In conclusion, we identified that 2-AAPA as an effective thiol oxidative stress inducer and proliferation of TE-13 cells were suppressed by G2/M phase cell cycle arrest, mainly, through α-tubulin S-glutathionylation-mediated microtubule depolymerization. Our results may introduce new target and approach for esophageal cancer therapy through generation of GR-mediated thiol oxidative stress.
Collapse
Affiliation(s)
- Xia Li
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, China.,Zhejiang Key Laboratory of Diagnosis and Treatment Technology on Thoracic Oncology (Lung and Esophagus), Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | - Zhiming Jiang
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, China.,Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | - Jianguo Feng
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, China.,Zhejiang Key Laboratory of Diagnosis and Treatment Technology on Thoracic Oncology (Lung and Esophagus), Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | | | - Junzhou Wu
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, China.,Zhejiang Key Laboratory of Diagnosis and Treatment Technology on Thoracic Oncology (Lung and Esophagus), Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | - Wei Chen
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, China.,Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| |
Collapse
|
16
|
Glutathione Disulfide Liposomes - a Research Tool for the Study of Glutathione Disulfide Associated Functions and Dysfunctions. Biochem Biophys Rep 2016; 7:225-229. [PMID: 28409182 PMCID: PMC5386405 DOI: 10.1016/j.bbrep.2016.06.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Glutathione disulfide (GSSG) is the oxidized form of glutathione (GSH). GSH is a tripeptide present in the biological system in mM concentration and is the major antioxidant in the body. An increase in GSSG reflects an increase in intracellular oxidative stress and is associated with disease sates. The increase has also been demonstrated to lead to an increase in protein S-glutathionylation that can affect the structure and function of proteins. Protein S-glutathionylation serves as a regulatory mechanism during cellular oxidative stress. Though GSSG is commercially available, its roles in various GSSG-associated normal/abnormal physiological functions have not been fully delineated due to the reason that GSSG is not cell membrane permeable and a lack of method to specifically increase GSSG in cells. We have developed cationic liposomes that can effectively deliver GSSG into cells. Various concentrations of GSSG liposomes can be conveniently prepared. At 1 mg/mL, the GSSG liposomes effectively increased intracellular GSSG by 27.1 ± 6.9 folds (n = 3) in 4 hours and led to a significant increase in protein S-glutathionylation confirming that the increased GSSG is functionally effective. The Trypan blue assay demonstrated that GSSG liposomes were not cytotoxic; the cell viability was greater than 95% after cells were treated with the GSSG liposomes for 4 h. A stability study showed that the dry form of the GSSG liposomes were stable for at least 70 days when stored at -80 °C. Our data demonstrate that the GSSG liposomes can be a valuable tool in studying GSSG-associated physiological/pathological functions.
Collapse
|
17
|
Habener A, Chowdhury A, Echtermeyer F, Lichtinghagen R, Theilmeier G, Herzog C. MitoNEET Protects HL-1 Cardiomyocytes from Oxidative Stress Mediated Apoptosis in an In Vitro Model of Hypoxia and Reoxygenation. PLoS One 2016; 11:e0156054. [PMID: 27243905 PMCID: PMC4887087 DOI: 10.1371/journal.pone.0156054] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 05/09/2016] [Indexed: 12/03/2022] Open
Abstract
The iron-sulfur cluster containing protein mitoNEET is known to modulate the oxidative capacity of cardiac mitochondria but its function during myocardial reperfusion injury after transient ischemia is unknown. The purpose of this study was to analyze the impact of mitoNEET on oxidative stress induced cell death and its relation to the glutathione-redox system in cardiomyocytes in an in vitro model of hypoxia and reoxygenation (H/R). Our results show that siRNA knockdown (KD) of mitoNEET caused an 1.9-fold increase in H/R induced apoptosis compared to H/R control while overexpression of mitoNEET caused a 53% decrease in apoptosis. Necrosis was not affected. Apoptosis of both, mitoNEET-KD and control cells was diminished to comparable levels by using the antioxidants Tiron and glutathione compound glutathione reduced ethyl ester (GSH-MEE), indicating that mitoNEET-dependent apoptosis is mediated by oxidative stress. The interplay between mitoNEET and glutathione redox system was assessed by treating cardiomyocytes with 2-acetylamino-3-[4-(2-acetylamino-2-carboxyethylsulfanylthio-carbonylamino) phenylthiocarbamoylsulfanyl] propionic acid (2-AAPA), known to effectively inhibit glutathione reductase (GSR) and to decrease the GSH/GSSG ratio. Surprisingly, inhibition of GSR-activity to 20% by 2-AAPA decreased apoptosis of control and mitoNEET-KD cells to 23% and 25% respectively, while at the same time mitoNEET-protein was increased 4-fold. This effect on mitoNEET-protein was not accessible by mitoNEET-KD but was reversed by GSH-MEE. In conclusion we show that mitoNEET protects cardiomyocytes from oxidative stress-induced apoptosis during H/R. Inhibition of GSH-recycling, GSR-activity by 2-AAPA increased mitoNEET-protein, accompanied by reduced apoptosis. Addition of GSH reversed these effects suggesting that mitoNEET can in part compensate for imbalances in the antioxidative glutathione-system and therefore could serve as a potential therapeutic approach for the oxidatively stressed myocardium.
Collapse
Affiliation(s)
- Anika Habener
- Department of Anesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany.,Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany
| | - Arpita Chowdhury
- Department of Anesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany.,Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Frank Echtermeyer
- Department of Anesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany
| | - Ralf Lichtinghagen
- Institute for Clinical Chemistry, Hannover Medical School, Hannover, Germany
| | - Gregor Theilmeier
- Department of Anesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany.,Department of Health Services Sciences, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - Christine Herzog
- Department of Anesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany
| |
Collapse
|
18
|
Methylmercury alters glutathione homeostasis by inhibiting glutaredoxin 1 and enhancing glutathione biosynthesis in cultured human astrocytoma cells. Toxicol Lett 2016; 256:1-10. [PMID: 27180086 DOI: 10.1016/j.toxlet.2016.05.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 04/28/2016] [Accepted: 05/11/2016] [Indexed: 02/08/2023]
Abstract
Methylmercury (MeHg) is a neurotoxin that binds strongly to thiol residues on protein and low molecular weight molecules like reduced glutathione (GSH). The mechanism of its effects on GSH homeostasis particularly at environmentally relevant low doses is not fully known. We hypothesized that exposure to MeHg would lead to a depletion of reduced glutathione (GSH) and an accumulation of glutathione disulfide (GSSG) leading to alterations in S-glutathionylation of proteins. Our results showed exposure to low concentrations of MeHg (1μM) did not significantly alter GSH levels but increased GSSG levels by ∼12-fold. This effect was associated with a significant increase in total cellular glutathione content and a decrease in GSH/GSSG. Immunoblot analyses revealed that proteins involved in glutathione synthesis were upregulated accounting for the increase in cellular glutathione. This was associated an increase in cellular Nrf2 protein levels which is required to induce the expression of antioxidant genes in response to cellular stress. Intriguingly, we noted that a key enzyme involved in reversing protein S-glutathionylation and maintaining glutathione homeostasis, glutaredoxin-1 (Grx1), was inhibited by ∼50%. MeHg treatment also increased the S-glutathionylation of a high molecular weight protein. This observation is consistent with the inhibition of Grx1 and elevated H2O2 production however; contrary to our original hypothesis we found few S-glutathionylated proteins in the astrocytoma cells. Collectively, MeHg affects multiple arms of glutathione homeostasis ranging from pool management to protein S-glutathionylation and Grx1 activity.
Collapse
|
19
|
Codini M, Cataldi S, Lazzarini A, Tasegian A, Ceccarini MR, Floridi A, Lazzarini R, Ambesi-Impiombato FS, Curcio F, Beccari T, Albi E. Why high cholesterol levels help hematological malignancies: role of nuclear lipid microdomains. Lipids Health Dis 2016; 15:4. [PMID: 26754536 PMCID: PMC4709975 DOI: 10.1186/s12944-015-0175-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 12/24/2015] [Indexed: 12/11/2022] Open
Abstract
Background Diet and obesity are recognized in the scientific literature as important risk factors for cancer development and progression. Hypercholesterolemia facilitates lymphoma lymphoblastic cell growth and in time turns in hypocholesterolemia that is a sign of tumour progression. The present study examined how and where the cholesterol acts in cancer cells when you reproduce in vitro an in vivo hypercholesterolemia condition. Methods We used non-Hodgkin’s T cell human lymphoblastic lymphoma (SUP-T1 cell line) and we studied cell morphology, aggressiveness, gene expression for antioxidant proteins, polynucleotide kinase/phosphatase and actin, cholesterol and sphingomyelin content and finally sphingomyelinase activity in whole cells, nuclei and nuclear lipid microdomains. Results We found that cholesterol changes cancer cell morphology with the appearance of protrusions together to the down expression of β-actin gene and reduction of β-actin protein. The lipid influences SUP-T1 cell aggressiveness since stimulates DNA and RNA synthesis for cell proliferation and increases raf1 and E-cadherin, molecules involved in invasion and migration of cancer cells. Cholesterol does not change GRX2 expression but it overexpresses SOD1, SOD2, CCS, PRDX1, GSR, GSS, CAT and PNKP. We suggest that cholesterol reaches the nucleus and increases the nuclear lipid microdomains known to act as platform for chromatin anchoring and gene expression. Conclusion The results imply that, in hypercholesterolemia conditions, cholesterol reaches the nuclear lipid microdomains where activates gene expression coding for antioxidant proteins. We propose the cholesterolemia as useful parameter to monitor in patients with cancer.
Collapse
Affiliation(s)
- Michela Codini
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Samuela Cataldi
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Andrea Lazzarini
- Laboratory of Nuclear Lipid BioPathology, CRABiON, Perugia, Italy
| | - Anna Tasegian
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | | | | | - Remo Lazzarini
- Laboratory of Nuclear Lipid BioPathology, CRABiON, Perugia, Italy
| | | | - Francesco Curcio
- Department of Clinical and Biological Sciences, University of Udine, Udine, Italy
| | - Tommaso Beccari
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Elisabetta Albi
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy.
| |
Collapse
|
20
|
Bhowmick D, Srivastava S, D'Silva P, Mugesh G. Highly Efficient Glutathione Peroxidase and Peroxiredoxin Mimetics Protect Mammalian Cells against Oxidative Damage. Angew Chem Int Ed Engl 2015; 54:8449-53. [DOI: 10.1002/anie.201502430] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/29/2015] [Indexed: 12/15/2022]
|
21
|
Bhowmick D, Srivastava S, D'Silva P, Mugesh G. Highly Efficient Glutathione Peroxidase and Peroxiredoxin Mimetics Protect Mammalian Cells against Oxidative Damage. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502430] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
22
|
Xie J, Potter A, Xie W, Lynch C, Seefeldt T. Evaluation of a dithiocarbamate derivative as a model of thiol oxidative stress in H9c2 rat cardiomyocytes. Free Radic Biol Med 2014; 70:214-22. [PMID: 24607690 PMCID: PMC4011664 DOI: 10.1016/j.freeradbiomed.2014.02.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 02/22/2014] [Accepted: 02/26/2014] [Indexed: 12/16/2022]
Abstract
Thiol redox state (TRS) refers to the balance between reduced thiols and their corresponding disulfides and is mainly reflected by the ratio of reduced and oxidized glutathione (GSH/GSSG). A decrease in GSH/GSSG, which reflects a state of thiol oxidative stress, as well as thiol modifications such as S-glutathionylation, has been shown to have important implications in a variety of cardiovascular diseases. Therefore, research models for inducing thiol oxidative stress are important tools for studying the pathophysiology of these disease states as well as examining the impact of pharmacological interventions on thiol pathways. The purpose of this study was to evaluate the use of a dithiocarbamate derivative, 2-acetylamino-3-[4-(2-acetylamino-2-carboxyethylsulfanylthiocarbonylamino)phenylthiocarbamoylsulfanyl]propionic acid (2-AAPA), as a pharmacological model of thiol oxidative stress by examining the extent of thiol modifications induced in H9c2 rat cardiomyocytes and its impact on cellular functions. The extent of thiol oxidative stress produced by 2-AAPA was also compared to other models of oxidative stress including hydrogen peroxide (H2O2), diamide, buthionine sulfoximine, and N,N׳-bis(2-chloroethyl)-N-nitroso-urea. Results indicated that 2-AAPA effectively inhibited glutathione reductase and thioredoxin reductase activities and decreased the GSH/GSSG ratio by causing a significant accumulation of GSSG. 2-AAPA also increased the formation of protein disulfides as well as S-glutathionylation. The alteration in TRS led to a loss of mitochondrial membrane potential, release of cytochrome c, and increase in reactive oxygen species production. Compared to other models, 2-AAPA is more potent at creating a state of thiol oxidative stress with lower cytotoxicity, higher specificity, and more pharmacological relevance, and could be utilized as a research tool to study TRS-related normal and abnormal biochemical processes in cardiovascular diseases.
Collapse
Affiliation(s)
- Jiashu Xie
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA
| | - Ashley Potter
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA
| | - Wei Xie
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA
| | - Christophina Lynch
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA
| | - Teresa Seefeldt
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA.
| |
Collapse
|
23
|
Herold S, Staab-Weijnitz CA. Glutathione on the fas track. A novel drug target for the treatment of pseudomonas infection? Am J Respir Crit Care Med 2014; 189:386-9. [PMID: 24528316 DOI: 10.1164/rccm.201401-0063ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Susanne Herold
- 1 Department of Internal Medicine II Justus-Liebig-University, Universities Giessen & Marburg Lung Center Member of the German Center for Lung Research Giessen, Germany
| | | |
Collapse
|
24
|
Gibbs-Flournoy EA, Simmons SO, Bromberg PA, Dick TP, Samet JM. Monitoring intracellular redox changes in ozone-exposed airway epithelial cells. ENVIRONMENTAL HEALTH PERSPECTIVES 2013; 121:312-317. [PMID: 23249900 PMCID: PMC3621206 DOI: 10.1289/ehp.1206039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 12/17/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND The toxicity of many xenobiotic compounds is believed to involve oxidative injury to cells. Direct assessment of mechanistic events involved in xenobiotic-induced oxidative stress is not easily achievable. Development of genetically encoded probes designed for monitoring intracellular redox changes represents a methodological advance with potential applications in toxicological studies. OBJECTIVE We tested the utility of redox-sensitive green fluorescent protein (roGFP)-based redox sensors for monitoring real-time intracellular redox changes induced by xenobiotics in toxicological studies. METHODS roGFP2, a reporter of the glutathione redox potential (E(GSH)), was used to monitor EGSH in cultured human airway epithelial cells (BEAS-2B cells) undergoing exposure to 0.15-1.0 ppm ozone (O(3)). Cells were imaged in real time using a custom-built O(3) exposure system coupled to a confocal microscope. RESULTS O(3) exposure induced a dose- and time-dependent increase of the cytosolic EGSH. Additional experiments confirmed that roGFP2 is not directly oxidized, but properly equilibrates with the glutathione redox couple: Inhibition of endogenous glutaredoxin 1 (Grx1) disrupted roGFP2 responses to O(3), and a Grx1-roGFP2 fusion protein responded more rapidly to O(3) exposure. Selenite-induced up-regulation of GPx (glutathione peroxidase) expression-enhanced roGFP2 responsiveness to O(3), suggesting that (hydro)peroxides are intermediates linking O(3) exposure to glutathione oxidation. CONCLUSION Exposure to O(3) induces a profound increase in the cytosolic E(GSH) of airway epithelial cells that is indicative of an oxidant-dependent impairment of glutathione redox homeostasis. These studies demonstrate the utility of using genetically encoded redox reporters in making reliable assessments of cells undergoing exposure to xenobiotics with strong oxidizing properties.
Collapse
Affiliation(s)
- Eugene A Gibbs-Flournoy
- Curriculum in Toxicology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7310, USA
| | | | | | | | | |
Collapse
|