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Zhang J, Cen L, Zhang X, Tang C, Chen Y, Zhang Y, Yu M, Lu C, Li M, Li S, Lin B, Zhang T, Song X, Yu C, Wu H, Shen Z. MPST deficiency promotes intestinal epithelial cell apoptosis and aggravates inflammatory bowel disease via AKT. Redox Biol 2022; 56:102469. [PMID: 36126419 PMCID: PMC9486620 DOI: 10.1016/j.redox.2022.102469] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/26/2022] [Accepted: 09/06/2022] [Indexed: 11/26/2022] Open
Abstract
Background & aims Excessive inflammatory responses and oxidative stress are considered the main characteristics of inflammatory bowel disease (IBD). Endogenous hydrogen sulfide (H2S) has been reported to show anti-inflammatory activity in IBD. The main aim of this study was to explore the role of 3-mercaptopyruvate sulfurtransferase (MPST), a key enzyme that regulates endogenous H2S biosynthesis, in IBD. Methods Colonic MPST expression was evaluated in mice and patients with IBD. Various approaches were used to explore the concrete mechanism underlying MPST regulation of the progression of colitis through in vivo and in vitro models. Results MPST expression was markedly decreased in colonic samples from patients with ulcerative colitis (UC) or Crohn's disease (CD) and from mice treated with DSS. MPST deficiency significantly aggravated the symptoms of murine colitis, exacerbated inflammatory responses and apoptosis, and inhibited epithelium stem cell-derived organoid formation in an H2S-independent manner. Consistently, when HT29 cells were treated with TNF-α, inhibition of MPST significantly increased the expression of proinflammatory cytokines, the amount of ROS and the prevalence of apoptosis, whereas overexpression of MPST markedly improved these effects. RNA-seq analysis showed that MPST might play a role in regulating apoptosis through AKT signaling. Mechanistically, MPST directly interacted with AKT and reduced the phosphorylation of AKT. Additionally, MPST expression was positively correlated with AKT expression in human IBD samples. In addition, overexpression of AKT rescued IEC apoptosis caused by MPST deficiency, while inhibition of AKT significantly aggravated it. Conclusions MPST protects the intestines from inflammation most likely by regulating the AKT/apoptosis axis in IECs. Our results may provide a novel therapeutic strategy for the treatment of colitis.
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Affiliation(s)
- Jie Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Li Cen
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xiaofen Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chenxi Tang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yishu Chen
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yuwei Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Mengli Yu
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chao Lu
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Meng Li
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Sha Li
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Bingru Lin
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Tiantian Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xin Song
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chaohui Yu
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Hao Wu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Zhe Shen
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
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Casili G, Randi E, Panagaki T, Zuhra K, Petrosino M, Szabo C. Inhibition of the 3-mercaptopyruvate sulfurtransferase-hydrogen sulfide system promotes cellular lipid accumulation. GeroScience 2022. [PMID: 35680713 DOI: 10.1007/s11357-022-00600-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/31/2022] [Indexed: 12/30/2022] Open
Abstract
H2S is generated in the adipose tissue by cystathionine γ-lyase, cystathionine β-synthase, and 3-mercaptopyruvate sulfurtransferase (3-MST). H2S plays multiple roles in the regulation of various metabolic processes, including insulin resistance. H2S biosynthesis also occurs in adipocytes. Aging is known to be associated with a decline in H2S. Therefore, the question arises whether endogenous H2S deficiency may affect the process of adipocyte maturation and lipid accumulation. Among the three H2S-generating enzymes, the role of 3-MST is the least understood in adipocytes. Here we tested the effect of the 3-MST inhibitor 2-[(4-hydroxy-6-methylpyrimidin-2-yl)sulfanyl]-1-(naphthalen-1-yl)ethan-1-one (HMPSNE) and the H2S donor (GYY4137) on the differentiation and adipogenesis of the adipocyte-like cells 3T3-L1 in vitro. 3T3-L1 cells were differentiated into mature adipocytes in the presence of GYY4137 or HMPSNE. HMPSNE significantly enhanced lipid accumulation into the maturing adipocytes. On the other hand, suppressed lipid accumulation was observed in cells treated with the H2S donor. 3-MST inhibition increased, while H2S donation suppressed the expression of various H2S-producing enzymes during adipocyte differentiation. 3-MST knockdown also facilitated adipocytic differentiation and lipid uptake. The underlying mechanisms may involve impairment of oxidative phosphorylation and fatty acid oxidation as well as the activation of various differentiation-associated transcription factors. Thus, the 3-MST/H2S system plays a tonic role in suppressing lipid accumulation and limiting the differentiation of adipocytes. Stimulation of 3-MST activity or supplementation of H2S—which has been recently linked to various experimental therapeutic approaches during aging—may be a potential experimental approach to counteract adipogenesis.
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Huo TI, Liao JI, Ho SY. 3-Mercaptopyruvate sulfurtransferase in hepatocellular carcinoma: Is it an authentic clinical prognostic predictor? Liver Int 2022; 42:1475. [PMID: 35460171 DOI: 10.1111/liv.15279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 03/15/2022] [Indexed: 01/22/2023]
Affiliation(s)
- Teh-Ia Huo
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jia-I Liao
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shu-Yein Ho
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Division of Gastroenterology and Hepatology, Min-Sheng General Hospital, Taoyuan, Taiwan
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Zou S, Shimizu T, Yamamoto M, Shimizu S, Higashi Y, Saito M. Hydrogen sulfide-induced relaxation of the bladder is attenuated in spontaneously hypertensive rats. Int Urol Nephrol 2019; 51:1507-15. [PMID: 31289981 DOI: 10.1007/s11255-019-02222-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/27/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE To compare hydrogen sulfide (H2S)-induced relaxation on the bladder between normotensive and spontaneously hypertensive rat (SHR), we evaluated the effects of H2S donors (GYY4137 and NaHS) on the micturition reflex and on the contractility of bladder tissues. We also investigated the content of H2S and the expression levels of enzymes related to H2S biosynthesis [cystathionine β-synthase (CBS), 3-mercaptopyruvate sulfurtransferase (MPST), and cysteine aminotransferase (CAT)] in the bladder. METHODS Eighteen-week-old male normotensive Wistar rats and SHRs were used. Under urethane anesthesia, the effects of intravesically instilled GYY4137 (10-8, 10-7 and 10-6 M) on the micturition reflex were evaluated by cystometry. The effects of NaHS (1 × 10-8-3 × 10-4 M) were evaluated on carbachol (10-5 M)-induced pre-contracted bladder strips. Tissue H2S content was measured by the methylene blue method. The expression levels of these enzymes were investigated by Western blot. RESULTS GYY4137 significantly prolonged intercontraction intervals in Wistar rats, but not in SHRs. NaHS-induced relaxation on pre-contracted bladder strips was significantly attenuated in SHRs compared with Wistar rats. The H2S content in the bladder of SHRs was significantly higher than that of Wistar rats. CBS, MPST and CAT were detected in the bladder of Wistar rats and SHRs. The expression levels of MPST in the SHR bladder were significantly higher than those in the Wistar rat bladder. CONCLUSION H2S-induced bladder relaxation in SHRs is impaired, thereby resulting in a compensatory increase of the H2S content in the SHR bladder.
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Chen J, Shen X, Pardue S, Meram AT, Rajendran S, Ghali GE, Kevil CG, Shackelford RE. The Ataxia telangiectasia-mutated and Rad3-related protein kinase regulates cellular hydrogen sulfide concentrations. DNA Repair (Amst) 2018; 73:55-63. [PMID: 30470507 DOI: 10.1016/j.dnarep.2018.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 11/07/2018] [Accepted: 11/08/2018] [Indexed: 12/16/2022]
Abstract
The ataxia telangiectasia-mutated and Rad3-related (ATR) serine/threonine kinase plays a central role in the repair of replication-associated DNA damage, the maintenance of S and G2/M-phase genomic stability, and the promotion of faithful mitotic chromosomal segregation. A number of stimuli activate ATR, including persistent single-stranded DNA at stalled replication folks, R loop formation, hypoxia, ultraviolet light, and oxidative stress, leading to ATR-mediated protein phosphorylation. Recently, hydrogen sulfide (H2S), an endogenous gasotransmitter, has been found to regulate multiple cellular processes through complex redox reactions under similar cell stress environments. Three enzymes synthesize H2S: cystathionine-β-synthase, cystathionine γ-lyase, and 3-mercaptopyruvate sulfurtransferase. Since H2S can under some conditions cause DNA damage, we hypothesized that ATR activity may regulate cellular H2S concentrations and H2S-syntheszing enzymes. Here we show that human colorectal cancer cells carrying biallelic knock-in hypomorphic ATR mutations have lower cellular H2S concentrations than do syngeneic ATR wild-type cells, and all three H2S-synthesizing enzymes show lower protein expression in the ATR hypomorphic mutant cells. Additionally, ATR serine 428 phosphorylation is altered by H2S donor and H2S synthesis enzyme inhibition, while the oxidative-stress induced phosphorylation of the ATR-regulated protein CHK1 on serine 345 is increased by H2S synthesis enzyme inhibition. Lastly, inhibition of H2S production potentiated oxidative stress-induced double-stranded DNA breaks in the ATR hypomorphic mutant compared to ATR wild-type cells. Our findings demonstrate that the ATR kinase regulates and is regulated by H2S.
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Affiliation(s)
- Jie Chen
- Department of Pathology & Translational Pathobiology, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States
| | - Xinggui Shen
- Department of Pathology & Translational Pathobiology, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States
| | - Sibile Pardue
- Department of Cell Biology & Anatomy, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States
| | - Andrew T Meram
- Head & Neck Oncologic/Microvascular Reconstructive Surgery Department of Oral & Maxillofacial/Head & Neck Surgery, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Saranya Rajendran
- Department of Cell Biology & Anatomy, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States
| | - Ghali E Ghali
- Head & Neck Oncologic/Microvascular Reconstructive Surgery Department of Oral & Maxillofacial/Head & Neck Surgery, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Christopher G Kevil
- Department of Pathology & Translational Pathobiology, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States; Department of Cell Biology & Anatomy, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States.
| | - Rodney E Shackelford
- Department of Pathology & Translational Pathobiology, LSU Health Sciences Center Shreveport, Shreveport, Louisiana, 71130, United States.
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Breza J, Soltysova A, Hudecova S, Penesova A, Szadvari I, Babula P, Chovancova B, Lencesova L, Pos O, Breza J, Ondrias K, Krizanova O. Endogenous H 2S producing enzymes are involved in apoptosis induction in clear cell renal cell carcinoma. BMC Cancer 2018; 18:591. [PMID: 29793450 PMCID: PMC5968466 DOI: 10.1186/s12885-018-4508-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 05/15/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Knowledge about the expression and thus a role of enzymes that produce endogenous H2S - cystathionine-β-synthase, cystathionine γ-lyase and mercaptopyruvate sulfurtransferase - in renal tumors is still controversial. In this study we aimed to determine the expression of these enzymes relatively to the expression in unaffected part of kidney from the same patient and to found relation of these changes to apoptosis. To evaluate patient's samples, microarray and immunohistochemistry was used. METHODS To determine the physiological importance, we used RCC4 stable cell line derived from clear cell renal cell carcinoma, where apoptosis induction by a mixture of five chemotherapeutics with/without silencing of H2S-producing enzymes was detected. Immunofluorescence was used to determine each enzyme in the cells. RESULTS In clear cell renal cell carcinomas, expression of H2S-producing enzymes was mostly decreased compared to a part of kidney that was distal from the tumor. To evaluate a potential role of H2S-producing enzymes in the apoptosis induction, we used RCC4 stable cell line. We have found that silencing of cystathionine-β-synthase and cystathionine γ-lyase prevented induction of apoptosis. Immunofluorescence staining clearly showed that these enzymes were upregulated during apoptosis in RCC4 cells. CONCLUSION Based on these results we concluded that in clear cell renal cell carcinoma, reduced expression of the H2S-producing enzymes, mainly cystathionine γ-lyase, might contribute to a resistance to the induction of apoptosis. Increased production of the endogenous H2S, or donation from the external sources might be of a therapeutic importance in these tumors.
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Affiliation(s)
- Jan Breza
- Department of Urology with Kidney Transplant Center, University Hospital, Faculty of Medicine, Bratislava, Slovakia
| | - Andrea Soltysova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia.,Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | - Sona Hudecova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Adela Penesova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Ivan Szadvari
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petr Babula
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Barbora Chovancova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Lubomira Lencesova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Ondrej Pos
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | - Jan Breza
- Department of Urology with Kidney Transplant Center, University Hospital, Faculty of Medicine, Bratislava, Slovakia
| | - Karol Ondrias
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Olga Krizanova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia. .,Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
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Abstract
The history of H2S - as an environmental toxin - dates back to 1700, to the observations of the Italian physician Bernardino Ramazzini, whose book "De Morbis Artificum Diatriba" described the painful eye irritation and inflammation of "sewer gas" in sewer workers. The gas has subsequently been identified as hydrogen sulfide (H2S), and opened three centuries of research into the biological roles of H2S. The current article highlights the key discoveries in the field of H2S research, including (a) the toxicological studies, which characterized H2S as an environmental toxin, and identified some of its modes of action, including the inhibition of mitochondrial respiration; (b) work in the field of bacteriology, which, starting in the early 1900s, identified H2S as a bacterial product - with subsequently defined roles in the regulation of periodontal disease (oral bacterial flora), intestinal epithelial cell function (enteral bacterial flora) as well as in the regulation of bacterial resistance to antibiotics; and (c), work in diverse fields of mammalian biology, which, starting in the 1940s, identified H2S as an endogenous mammalian enzymatic product, the functions of which - among others, in the cardiovascular and nervous system - have become subjects of intensive investigation for the last decade. The current review not only enumerates the key discoveries related to H2S made over the last three centuries, but also compiles the most frequently cited papers in the field which have been published over the last decade and highlights some of the current 'hot topics' in the field of H2S biology.
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Affiliation(s)
- Csaba Szabo
- Department of Anesthesiology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.
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Nagahara N, Koike S, Nirasawa T, Kimura H, Ogasawara Y. Alternative pathway of H 2S and polysulfides production from sulfurated catalytic-cysteine of reaction intermediates of 3-mercaptopyruvate sulfurtransferase. Biochem Biophys Res Commun 2018; 496:648-653. [PMID: 29331374 DOI: 10.1016/j.bbrc.2018.01.056] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 01/09/2018] [Indexed: 10/18/2022]
Abstract
It has been known that hydrogen sulfide and/or polysulfides are produced from a (poly)sulfurated sulfur-acceptor substrate of 3-mercaptopyruvate sulfurtransferase (MST) via thioredoxin (Trx) reduction in vitro. In this study, we used thiosulfate as the donor substrate and the catalytic reaction was terminated on the formation of a persulfide or polysulfides. We can present alternative pathway of production of hydrogen sulfide and/or polysulfides from (poly)sulfurated catalytic-site cysteine of reaction intermediates of MST via Trx reduction. Matrix-assisted laser desorption ionization tandem time-of-flight mass spectrometric analysis revealed that after prolonged incubation of MST with thiosulfate, a trisulfide adduct becomes predominant at the sulfurated catalytic-site cysteine. When these adducts were reduced by Trx with reducing system (MST:Escherichia coli Trx:E. coli Trx reductase:NADPH = 1:5:0.02:12.5 molar ratio), liquid chromatography with tandem mass spectrometric analysis for monobromobimane-derivatized H2Sn revealed that H2S2 first appeared, and then H2S and H2S3 did later. The results were confirmed by high-performance liquid chromatography-fluorescence analysis.
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Affiliation(s)
| | - Shin Koike
- Department of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo, 204-8588, Japan.
| | - Takashi Nirasawa
- Bruker Daltonics K.K., 3-9 Moriyacho, Kanagawa-ku, Yokohama, 221-0022, Japan.
| | - Hideo Kimura
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, 187-8502, Japan.
| | - Yuki Ogasawara
- Department of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo, 204-8588, Japan.
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Abstract
Hydrogen sulfide (H2S) is an endogenously produced signaling molecule synthesized by cystathionine γ-lyase (CSE), cystathionine β-synthase (CBS) and 3-mercaptopyruvate sulfurtransferase (3-MST). Given that H2S exerts significant effects on bioenergetics and metabolism, the goal of the current study was to determine the expression of H2S-producing enzymes in adipose tissues in models of obesity and metabolic disruption. Mice fed a western diet expressed lower mRNA levels of all three enzymes in epididymal fat (EWAT), while only CSE and 3-MST were reduced in brown adipose tissue (BAT). At the protein level 3-MST was reduced in all fat depots studied. Using db/db mice, a genetic model of obesity, we found that CSE, CBS and 3-MST mRNA were reduced in white fat, while only CSE was reduced in BAT. CBS and CSE protein levels were suppressed in all three fat depots. In a model of age-related weight gain, no reduction in the mRNA of any of the enzymes was noted. Smaller amounts of 3-MST protein were found in EWAT, while both CSE and 3-MST were reduced in BAT. Tissue levels of H2S were lower in WAT in HFD mice; both WAT and BAT contained lower H2S amounts in db/db animals. Taken together, our data suggest that obesity is associated with a decreased expression of H2S-synthesizing enzymes and reduced H2S levels in adipose tissues of mice. We propose that the reduction in H2S may contribute to the metabolic response associated with obesity. Further work is needed to determine whether restoring H2S levels may have a beneficial effect on obesity-associated metabolic alterations.
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Affiliation(s)
- Antonia Katsouda
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Greece; Center of Clinical, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens, Greece
| | - Csaba Szabo
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, TX, USA
| | - Andreas Papapetropoulos
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Greece; Center of Clinical, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens, Greece.
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Gai JW, Qin W, Liu M, Wang HF, Zhang M, Li M, Zhou WH, Ma QT, Liu GM, Song WH, Jin J, Ma HS. Expression profile of hydrogen sulfide and its synthases correlates with tumor stage and grade in urothelial cell carcinoma of bladder. Urol Oncol 2016; 34:166.e15-20. [PMID: 26847849 DOI: 10.1016/j.urolonc.2015.06.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 06/27/2015] [Accepted: 06/29/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Hydrogen sulfide (H2S) is a newly discovered gas transmitter. It is synthesized by cystathionine β-synthase (CBS), cystathionine γ-lyase (CSE), and 3-mercaptopyruvate sulfurtransferase (MPST). Endogenous hydrogen sulfide has never been studied in bladder cancer. PURPOSE We evaluated H2S production and its synthases expression levels in transitional cell carcinoma (urothelial cell carcinoma of bladder [UCB]) of human bladder tissue and cell lines. MATERIALS AND METHODS Immunostaining was performed in urothelial cell lines and bladder specimens from 94 patients with UCB of different stages/grades. The expression levels/activities of CBS, CSE, and MPST of specimens and cell lines were analyzed by image semiquantity assay, western blot, and a sulfur-sensitive electrode. We tried to find the correlation between hydrogen sulfide and its synthases with tumor stage in UCB. All experiments were repeated at least 3 times. RESULTS Immunoreactivity for CBS, CSE, and MPST was detected in malignant uroepithelium and muscular layer of all tissues examined and cultured cells. The expression levels of CBS, CSE, and MPST were associated with UCB stage/grade. Muscle-invasive bladder cancer samples showed the highest production of H2S (52.6±2.91 nmol/[mg·min]) among all tested samples and EJ cells (transitional cell carcinoma, grade IIIshowed the highest production of H2S among all tested cell lines (53.3±7.02nmol/[mg·min]). CONCLUSIONS Protein levels and catalytic activities of CBS, CSE, and MPST increased with the increase of malignant degrees in human bladder tissues and human UCB cell lines. Our findings may promote the application of these novel enzymes to UCB diagnosis or treatment.
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Affiliation(s)
- Jun-Wei Gai
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - Wei Qin
- Department of orthopedics, Xiangyang Central Hospital, Xiangyang, P.R. China
| | - Miao Liu
- Hedong Center for Disease Control and Prevention, Tianjin, P.R. China
| | - Hai-Feng Wang
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - Min Zhang
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, P.R. China
| | - Meng Li
- Department of Urology, The People׳s Hospital of Nanpi Country, Nanpi, P.R. China
| | - Wen-Hui Zhou
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - Qin-Tong Ma
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - Guang-Ming Liu
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - Wen-Hui Song
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - Jie Jin
- Department of Urology, Peking University First Hospital, The Institute of Urology, Peking University, Beijing, P.R. China
| | - Hong-Shun Ma
- Department of Urology, Tianjin First Central Hospital, Tianjin, P.R. China.
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Li M, Nie L, Hu Y, Yan X, Xue L, Chen L, Zhou H, Zheng Y. Chronic intermittent hypoxia promotes expression of 3-mercaptopyruvate sulfurtransferase in adult rat medulla oblongata. Auton Neurosci 2013; 179:84-9. [PMID: 24051007 DOI: 10.1016/j.autneu.2013.08.066] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Revised: 07/29/2013] [Accepted: 08/21/2013] [Indexed: 11/26/2022]
Abstract
The present experiments were carried out to investigate the expression of 3-mercaptopyruvate sulfurtransferase (3MST) in medulla oblongata of rats and effects of chronic intermittent hypoxia (CIH) on its expression. Sprague Dawley adult rats were randomly divided into two groups, including control (Con) group and CIH group. The endogenous production of hydrogen sulfide (H2S) in medulla oblongata tissue homogenates was measured using the methylene blue assay method, 3MST mRNA and protein expression were analyzed by RT-PCR and Western blotting, respectively, and the expression of 3MST in the neurons of respiratory-related nuclei in medulla oblongata of rats was investigated with immunohistochemical technique. CIH elevated the endogenous H2S production in rat medulla oblongata (P<0.01). The RT-PCR and Western blotting analyses showed that 3MST mRNA and protein were expressed in the medulla oblongata of rats and CIH promoted their expression (P<0.01). Immunohistochemical staining indicated that 3MST existed in the neurons of pre-Bötzinger complex (pre-BötC), hypoglossal nucleus (12N), ambiguous nucleus (Amb), facial nucleus (FN) and nucleus tractus solitarius (NTS) in the animals and the mean optical densities of 3MST-positive neurons in the pre-BötC, 12N and Amb, but not in FN and NTS, were significantly increased in CIH group (P<0.05). In conclusion, 3MST exists in the neurons of medullary respiratory nuclei and its expression can be up-regulated by CIH in adult rat, suggesting that 3MST-H2S pathway may be involved in regulation of respiration and protection on medullary respiratory centers from injury induced by CIH.
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Affiliation(s)
- Mingqiang Li
- Department of Physiology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China
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Singh P, Rao P, Bhattacharya R. Dose and time-dependent effects of cyanide on thiosulfate sulfurtransferase, 3-mercaptopyruvate sulfurtransferase, and cystathionine λ-lyase activities. J Biochem Mol Toxicol 2013; 27:499-507. [PMID: 23929717 DOI: 10.1002/jbt.21514] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 06/24/2013] [Accepted: 07/12/2013] [Indexed: 11/10/2022]
Abstract
We assessed the dose-dependent effect of potassium cyanide (KCN) on thiosulfate sulfurtransferase (TST), 3-mercaptopyruvate sulfurtransferase (3-MPST), and cystathionine λ-lyase (CST) activities in mice. The time-dependent effect of 0.5 LD50 KCN on cyanide level and cytochrome c oxidase (CCO), TST, 3-MPST, and CST activities was also examined. Furthermore, TST, 3-MPST, and CST activities were measured in stored mice cadavers. Hepatic and renal TST activity increased by 0.5 LD50 KCN but diminished by ≥2.0 LD50. After 0.5 LD50 KCN, the elevated hepatic cyanide level was accompanied by increased TST, 3-MPST, and CST activities, and CCO inhibition. Elevated renal cyanide level was only accompanied by increased 3-MPST activity. No appreciable change in enzyme activities was observed in mice cadavers. The study concludes that high doses of cyanide exert saturating effects on its detoxification enzymes, indicating their exogenous use during cyanide poisoning. Also, these enzymes are not reliable markers of cyanide poisoning in autopsied samples.
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Affiliation(s)
- Poonam Singh
- Division of Pharmacology and Toxicology, Defence Research and Development Establishment, Gwalior, 474 002, India
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