1
|
Phan J, Macwan S, Gralnick JA, Yee N. Extracellular organic disulfide reduction by Shewanella oneidensis MR-1. Microbiol Spectr 2024; 12:e0408123. [PMID: 38415659 PMCID: PMC10986466 DOI: 10.1128/spectrum.04081-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/30/2023] [Accepted: 02/13/2024] [Indexed: 02/29/2024] Open
Abstract
Microbial reduction of organic disulfides affects the macromolecular structure and chemical reactivity of natural organic matter. Currently, the enzymatic pathways that mediate disulfide bond reduction in soil and sedimentary organic matter are poorly understood. In this study, we examined the extracellular reduction of 5,5'-dithiobis(2-nitrobenzoic acid) (DTNB) by Shewanella oneidensis strain MR-1. A transposon mutagenesis screen performed with S. oneidensis resulted in the isolation of a mutant that lost ~90% of its DTNB reduction activity. Genome sequencing of the mutant strain revealed that the transposon was inserted into the dsbD gene, which encodes for an oxidoreductase involved in cytochrome c maturation. Complementation of the mutant strain with the wild-type dsbD partially restored DTNB reduction activity. Because DsbD catalyzes a critical step in the assembly of multi-heme c-type cytochromes, we further investigated the role of extracellular electron transfer cytochromes in organic disulfide reduction. The results indicated that mutants lacking proteins in the Mtr system were severely impaired in their ability to reduce DTNB. These findings provide new insights into extracellular organic disulfide reduction and the enzymatic pathways of organic sulfur redox cycling.IMPORTANCEOrganic sulfur compounds in soils and sediments are held together by disulfide bonds. This study investigates how Shewanella oneidensis breaks apart extracellular organic sulfur compounds. The results show that an enzyme involved in the assembly of c-type cytochromes as well as proteins in the Mtr respiratory pathway is needed for S. oneidensis to transfer electrons from the cell surface to extracellular organic disulfides. These findings have important implications for understanding how organic sulfur decomposes in terrestrial ecosystems.
Collapse
Affiliation(s)
- Jonathan Phan
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, New Jersey, USA
| | - Shine Macwan
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, New Jersey, USA
| | - Jeffrey A. Gralnick
- Department of Plant and Microbial Biology, BioTechnology Institute, University of Minnesota, Twin Cities, Minnesota, USA
| | - Nathan Yee
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, New Jersey, USA
| |
Collapse
|
2
|
Christer S, Simons M. Lysosomal cystine accumulation activates mTOR signaling in cystinosis: are mTOR inhibitors the cure? Kidney Int 2024; 105:656-658. [PMID: 38519228 DOI: 10.1016/j.kint.2023.11.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/01/2023] [Indexed: 03/24/2024]
Affiliation(s)
- Salómon Christer
- Nephrogenetics Unit, Institute of Human Genetics, University Hospital Heidelberg, Heidelberg, Germany
| | - Matias Simons
- Nephrogenetics Unit, Institute of Human Genetics, University Hospital Heidelberg, Heidelberg, Germany.
| |
Collapse
|
3
|
Abstract
The cystine transporter solute carrier family 7 member 11 (SLC7A11) (also known as xCT) promotes glutathione synthesis and counters oxidative stress-induced cell death, including ferroptosis, by importing cystine. Also, SLC7A11 plays a crucial role in tumor development. However, recent studies have uncovered an unexpected role of SLC7A11 in promoting disulfidptosis, a novel form of regulated cell death induced by disulfide stress. In this review, we examine the opposing roles of SLC7A11 in regulating redox homeostasis and cell survival/death, summarize current knowledge on disulfidptosis, and explore its potential in disease treatment. A deeper understanding of disulfidptosis will offer new insights into fundamental cellular homeostasis and facilitate the development of innovative therapies for disease treatment.
Collapse
Affiliation(s)
- Xiaoguang Liu
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Li Zhuang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Boyi Gan
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; The University of Texas MD Anderson UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.
| |
Collapse
|
4
|
Zhou M, Sun W, Chu J, Liao Y, Xu P, Chen X, Li M. Identification of novel biomarkers for frailty diagnosis via serum amino acids metabolomic analysis using UPLC-MS/MS. Proteomics Clin Appl 2024:e2300035. [PMID: 38196151 DOI: 10.1002/prca.202300035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 09/02/2023] [Accepted: 11/22/2023] [Indexed: 01/11/2024]
Abstract
PURPOSE This study was aimed to analyze serum amino acid metabolite profiles in frailty patients, gain a better understanding of the metabolic mechanisms in frailty, and assess the diagnostic value of metabolomics-based biomarkers of frailty. EXPERIMENTAL DESIGN This study utilized the ultra-performance liquid chromatography tandem mass spectrometry to examine amino acids associated with frailty. Additionally, we employed multivariate statistical methods, metabolomic data analysis, receiver operating characteristic (ROC) curve analysis, and pathway enrichment analysis. RESULTS Among the assayed amino acid metabolites, we identified biomarkers for frailty. ROC curve analysis for frailty diagnosis based on the modified Fried's frailty index showed that the areas under ROC curve of tryptophan, phenylalanine, aspartic acid, and combination were 0.775, 0.679, 0.667, and 0.807, respectively. ROC curve analysis for frailty diagnosis based on Frail Scale showed that the areas under ROC curve of cystine, phenylalanine, and combination of amino acids (cystine, L-Glutamine, citrulline, tyrosine, kynurenine, phenylalanine, glutamin acid) were 0.834, 0.708, and 0.854 respectively. CONCLUSION AND CLINICAL RELEVANCE In this study, we explored the serum amino acid metabolite profiles in frailty patients. These present metabolic analyses may provide valuable information on the potential biomarkers and the possible pathogenic mechanisms of frailty. CLINICAL SIGNIFICANCE Frailty is a clinical syndrome, as a consequence it is challenging to identify at early course of the disease, even based on the existing frailty scales. Early diagnosis and appropriate patient management are the key to improve the survival and limit disabilities in frailty patients. Proven by the extensive laboratory and clinical studies on frailty, comprehensive analysis of metabolic levels in frail patients, identification of biomarkers and study of pathogenic pathways of metabolites contribute to the prediction and early diagnosis of frailty. In this study, we explored the serum amino acid metabolite profiles in frailty patients. These present metabolic analyses may provide valuable information on the potential biomarkers and the possible pathogenic mechanisms of frailty.
Collapse
Affiliation(s)
- Mengyuan Zhou
- The Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, P. R. China
| | - Wenjing Sun
- The Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, P. R. China
| | - Jiaojiao Chu
- The Department of Geriatrics, Zhejiang Hospital, Hangzhou, P. R. China
| | - Yingping Liao
- School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Pengfei Xu
- The Department of Geriatrics, Zhejiang Hospital, Hangzhou, P. R. China
| | - Xujiao Chen
- The Department of Geriatrics, Zhejiang Hospital, Hangzhou, P. R. China
| | - Meng Li
- The Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, P. R. China
| |
Collapse
|
5
|
Hecht F, Harris IS. Lysosomal cystine: an unexpected alarm bell for cysteine scarcity. Trends Cell Biol 2023; 33:1007-1009. [PMID: 37880057 PMCID: PMC10661594 DOI: 10.1016/j.tcb.2023.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
Cells respond to amino acid depletion by activating stress responses. A recent study by Swanda et al. reveals that a decrease in lysosomal cystine triggers a novel stress response that transcriptionally activates ATF4 and protects cells from ferroptosis. A synthetic mRNA, CysRx, can prevent ATF4 activation and enhance antitumor effects.
Collapse
Affiliation(s)
- Fabio Hecht
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA; Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA.
| | - Isaac S Harris
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA; Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA.
| |
Collapse
|
6
|
Dai C, Feng B, Jiang M, Han F, Xiong L. [Research on pretreatment methods for cystine determination in milk powder]. Wei Sheng Yan Jiu 2023; 52:896-906. [PMID: 38115652 DOI: 10.19813/j.cnki.weishengyanjiu.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
OBJECTIVE To establish a rapid, accurate and safe pretreatment method for the determination of cystine in milk powder. METHODS Samples were oxidized at 50 ℃ for 10 min after adding performic acid, and then the reaction was terminated with ethanol as oxidation terminator. The reaction solution was concentrate to dryness by vacuum centrifugation at 50 ℃. The residue was hydrolyzed at 145 ℃ for 4 h after adding 15 mL hydrochloric acid(6 mol/L). Quantitatively transfer the hydrolysate to 25 mL volumetric flask, rinsing with water, and dilute to volume. A proper amount of hydrolysate was concentrated to dryness by vacuum centrifugation at 50 ℃, dissolved in sodium citrate buffer, filtered, and determined by amino acid analyzer. RESULTS A rapid detection method of cystine in milk powder was realized in this study. Cysteic acid were linearly correlated within the set range, and the correlation coefficients were more than 0.999. This method was applied to the determination of milk powder reference material SRM1849A. The result was within the range of values, and the precision was all less than 4%; The detection limit of cystine was 0.001%, and the limit of quantitation was 0.003%. The applicability of this approach was validated by a comparison study with milk powder reference material(SRM 1869). To explore the scalability of the method, fish meal and soybean meal were measured for six times under the above conditions according to the classification of animals and plants. Meanwhile, milk powder, fish meal and soybean meal were also measured according to GB/T 15399-2018 as reference value. The relative deviation of the average values measured by both method were all less than 6%. CONCLUSION This method is simple and rapid, with good repeatability and high accuracy, and less harm to the operators and experimental equipment. It can be used for the rapid detection of cystine in milk powder, and it also has applicability to other complex samples.
Collapse
Affiliation(s)
- Chengbing Dai
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Beijian Feng
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Mi Jiang
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Feifei Han
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Libei Xiong
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| |
Collapse
|
7
|
Swanda RV, Ji Q, Wu X, Yan J, Dong L, Mao Y, Uematsu S, Dong Y, Qian SB. Lysosomal cystine governs ferroptosis sensitivity in cancer via cysteine stress response. Mol Cell 2023; 83:3347-3359.e9. [PMID: 37647899 PMCID: PMC10529971 DOI: 10.1016/j.molcel.2023.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 05/22/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023]
Abstract
The amino acid cysteine and its oxidized dimeric form cystine are commonly believed to be synonymous in metabolic functions. Cyst(e)ine depletion not only induces amino acid response but also triggers ferroptosis, a non-apoptotic cell death. Here, we report that unlike general amino acid starvation, cyst(e)ine deprivation triggers ATF4 induction at the transcriptional level. Unexpectedly, it is the shortage of lysosomal cystine, but not the cytosolic cysteine, that elicits the adaptative ATF4 response. The lysosome-nucleus signaling pathway involves the aryl hydrocarbon receptor (AhR) that senses lysosomal cystine via the kynurenine pathway. A blockade of lysosomal cystine efflux attenuates ATF4 induction and sensitizes ferroptosis. To potentiate ferroptosis in cancer, we develop a synthetic mRNA reagent, CysRx, that converts cytosolic cysteine to lysosomal cystine. CysRx maximizes cancer cell ferroptosis and effectively suppresses tumor growth in vivo. Thus, intracellular nutrient reprogramming has the potential to induce selective ferroptosis in cancer without systematic starvation.
Collapse
Affiliation(s)
- Robert V Swanda
- Graduate field of Biomedical and Biological Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Quanquan Ji
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Xincheng Wu
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Jingyue Yan
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Leiming Dong
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Yuanhui Mao
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Saori Uematsu
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Yizhou Dong
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Shu-Bing Qian
- Graduate field of Biomedical and Biological Sciences, Cornell University, Ithaca, NY 14853, USA; Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA.
| |
Collapse
|
8
|
DeBow P, Auger M, Fazio C, Cline K, Zhu X, Lulich J, de Swarte M, Lamb D, Hespel AM. The most common types of uroliths larger than 1 mm are readily visible and accurately measured in an in vitro setting mimicking the canine abdomen using digital radiography. Vet Radiol Ultrasound 2023; 64:806-812. [PMID: 37455335 DOI: 10.1111/vru.13268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 02/02/2023] [Revised: 05/02/2023] [Accepted: 05/29/2023] [Indexed: 07/18/2023] Open
Abstract
Abdominal radiography is an important diagnostic to detect uroliths. Cystine and urate uroliths were historically characterized as nonmineral opaque on survey radiographs. However, recent research and clinical observations indicate that pure urate and cystine uroliths may be detected with digital radiography. The primary purpose of this prospective, in vitro, diagnostic accuracy study was to determine the sensitivity of digital radiography in detecting cystoliths of varying size and composition. Forty canine uroliths of pure composition (10 each of calcium oxalate, struvite, cystine, and urate), acquired from Minnesota Urolith Center and ranging from 1 to 10 mm, were placed in phantoms of three various sizes and radiographed. The radiographs, including three sets of each urolith separately, were evaluated by three blinded radiologists on two separate occasions. Evaluation included presence or absence of urolith, number of uroliths, and maximum diameter of the urolith(s). For all four types of uroliths and all readers, the specificity and PPV were 100% with an associated very high sensitivity (94.4%-98.9%) and NPV (94.8%-98.9%). Calcium oxalate uroliths were the most accurately measured and struvite were the least accurately measured when compared with the gross measurement. Smaller uroliths were more accurately measured than larger uroliths. Uroliths placed in smaller bladder phantoms were more accurately measured than in larger bladder phantoms. Though accurate measurement of uroliths is complicated by and dependent on numerous variables, our results reveal that urate and cystine uroliths are visualized on digital radiography making them a relevant differential diagnosis when seen clinically.
Collapse
Affiliation(s)
- Patricia DeBow
- UTCVM, College of Veterinary Medicine, Knoxville, Tennessee, USA
| | | | - Constance Fazio
- UTCVM, College of Veterinary Medicine, Knoxville, Tennessee, USA
| | - Kelsey Cline
- VCA Advanced Veterinary Care Center, Fishers, Indiana, USA
| | - Xiaojuan Zhu
- Office of Information Technology, University of Tennessee, Knoxville, Tennessee, USA
| | - Jody Lulich
- Minnesota Urolith Center, Department of Veterinary Clinical Sciences University of Minnesota, St. Paul, Minnesota, USA
| | | | - Donald Lamb
- Department of Nutritional Sciences, Auburn University, Auburn, Alabama, USA
| | | |
Collapse
|
9
|
Bist G, Luong NT, Mahabubur Rahman KM, Ruszaj DM, Li C, Hanigan MH, You Y. SAR of L-ABBA analogs for GGT1 inhibitory activity and L-ABBA's effect on plasma cysteine and GSH species. Bioorg Med Chem Lett 2023:129406. [PMID: 37423504 DOI: 10.1016/j.bmcl.2023.129406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/02/2023] [Revised: 06/20/2023] [Accepted: 07/04/2023] [Indexed: 07/11/2023]
Abstract
Gamma-glutamyl transferase 1 (GGT1) is a critical enzyme involved in the hydrolysis and/or transfer of gamma-glutamyl groups of glutathione, which helps maintain cysteine levels in plasma. In this study, we synthesized L-ABBA analogs to investigate their inhibitory effect on GGT1 hydrolysis and transpeptidase activity, with the goal of defining the pharmacophore of L-ABBA. Our structure-activity relationship (SAR) study revealed that an α-COO- and α-NH3+ group, as well as a two-CH2 unit distance between α-C and boronic acid, are essential for the activity. The addition of an R (alkyl) group at the α-C reduced the activity of GGT1 inhibition, with L-ABBA being the most potent inhibitor among the analogs. Next, we investigated the impact of L-ABBA on plasma levels of cysteine and GSH species, with the expectation of observing reduced cysteine levels and enhanced GSH levels due to its GGT1 inhibition. We administered L-ABBA intraperitoneally and determined the plasma levels of cysteine, cystine, GSH, and GSSG using LCMS. Our results showed time- and L-ABBA dose-dependent changes in total plasma cysteine and GSH levels. This study is the first to demonstrate the regulation of plasma thiol species upon GGT1 inhibition, with plasma cystine levels reduced by up to ∼75% with L-ABBA (0.3 mg/dose). Cancer cells are highly dependent on the uptake of cysteine from plasma for maintaining high levels of intracellular glutathione. Thus, our findings suggest that GGT1 inhibitors, such as L-ABBA, have a potential to be used for GSH reduction thereby inducing oxidative stress in cancer cells and reducing their resistance to many chemotherapeutic agents.
Collapse
Affiliation(s)
- Ganesh Bist
- Department of Pharmaceutical Sciences, The State University of New York at Buffalo, Buffalo, NY 14214, United States
| | - Nguyen T Luong
- Department of Pharmaceutical Sciences, The State University of New York at Buffalo, Buffalo, NY 14214, United States
| | - Kazi Md Mahabubur Rahman
- Department of Pharmaceutical Sciences, The State University of New York at Buffalo, Buffalo, NY 14214, United States
| | - Donna M Ruszaj
- Department of Pharmaceutical Sciences, The State University of New York at Buffalo, Buffalo, NY 14214, United States
| | - Chenglong Li
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL 32610, United States
| | - Marie H Hanigan
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States
| | - Youngjae You
- Department of Pharmaceutical Sciences, The State University of New York at Buffalo, Buffalo, NY 14214, United States.
| |
Collapse
|
10
|
Hughes T, Tzelves L, Somani BK. Cystine Stones: Developments in Minimally Invasive Surgery and Their Impact on Morbidity and Stone Clearance. Res Rep Urol 2023; 15:175-185. [PMID: 37303487 PMCID: PMC10254682 DOI: 10.2147/rru.s381190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/19/2023] [Accepted: 05/31/2023] [Indexed: 06/13/2023] Open
Abstract
Cystinuria is a rare genetic condition that is responsible for cystine stones. Besides stone recurrence, patients with cystine stones have reduced health-related quality of life, increased rates of chronic kidney disease and hypertension. Although lifestyle measures, medical therapy and close follow up are essential to reduce and monitor cystine stone recurrences, surgical intervention is frequently needed for most cystinuria patients. Shock wave lithotripsy, ureteroscopy, percutaneous nephrolithotomy and active surveillance all have a role, and technological advances in endourology are vital in achieving a stone-free status and to prevent recurrences. The complexity of managing cystine stones necessitates a multidisciplinary team discussion, patient involvement and an individualised approach in a specialist centre for optimum management. Thulium fibre laser and virtual reality may have an increasing role in the future of cystine stone management.
Collapse
Affiliation(s)
- Thomas Hughes
- Department of Urology, Warwick Hospital, Warwick, UK
| | - Lazaros Tzelves
- Department of Urology, Sismanogleio Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton, Southampton, UK
| |
Collapse
|
11
|
Bondue T, Kouraich A, Berlingerio SP, Veys K, Marie S, Alsaad KO, Al-Sabban E, Levtchenko E, van den Heuvel L. The Pitfall of White Blood Cell Cystine Measurement to Diagnose Juvenile Cystinosis. Int J Mol Sci 2023; 24:ijms24021253. [PMID: 36674769 PMCID: PMC9864853 DOI: 10.3390/ijms24021253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Cystinosis is an autosomal recessive lysosomal storage disease, caused by mutations in the CTNS gene, resulting in multi-organ cystine accumulation. Three forms of cystinosis are distinguished: infantile and juvenile nephropathic cystinosis affecting kidneys and other organs such as the eyes, endocrine system, muscles, and brain, and adult ocular cystinosis affecting only the eyes. Currently, elevated white blood cell (WBC) cystine content is the gold standard for the diagnosis of cystinosis. We present a patient with proteinuria at adolescent age and corneal cystine crystals, but only slightly elevated WBC cystine levels (1.31 ½ cystine/mg protein), precluding the diagnosis of nephropathic cystinosis. We demonstrate increased levels of cystine in skin fibroblasts and urine-derived kidney cells (proximal tubular epithelial cells and podocytes), that were higher than the values observed in the WBC and healthy control. CTNS gene analysis shows the presence of a homozygous missense mutation (c.590 A > G; p.Asn177Ser), previously described in the Arab population. Our observation underlines that low WBC cystine levels can be observed in patients with juvenile cystinosis, which may delay the diagnosis and timely administration of cysteamine. In such patients, the diagnosis can be confirmed by cystine measurement in slow-dividing cells and by molecular analysis of the CTNS gene.
Collapse
Affiliation(s)
- Tjessa Bondue
- Laboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
| | - Anas Kouraich
- Laboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
| | - Sante Princiero Berlingerio
- Laboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
| | - Koenraad Veys
- Laboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
- Department of Pediatrics, AZ Delta Campus Torhout, 8820 Torhout, Belgium
| | - Sandrine Marie
- Laboratory of Inherited Metabolic Diseases/Biochemical Genetics, Cliniques Universitaires Saint-Luc, UC Louvain, 1200 Brussels, Belgium
| | - Khaled O. Alsaad
- Section of Histopathology, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11533, Saudi Arabia
| | - Essam Al-Sabban
- Section of Pediatric Nephrology, Department of Pediatrics, King Faisal Specialist Hospital and Research Centre, Riyadh 11533, Saudi Arabia
| | - Elena Levtchenko
- Laboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
- Department of Pediatrics, University Hospitals Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
| | - Lambertus van den Heuvel
- Laboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven Campus Gasthuisberg, 3000 Leuven, Belgium
- Department of Pediatrics, Division of Pediatric Nephrology, Amalia Children’s Hospital, Radboud University Medical Center, HB-6524 Nijmegen, The Netherlands
- Correspondence:
| |
Collapse
|
12
|
Wang G, Chen L, Qin S, Zheng Y, Xia C, Yao J, Wang P, Deng L. Cystine Induced-mTORC2 Activation through Promoting Sin1 Phosphorylation to Suppress Cancer Cell Ferroptosis. Mol Nutr Food Res 2022; 66:e2200186. [PMID: 36189894 DOI: 10.1002/mnfr.202200186] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 03/24/2022] [Revised: 09/19/2022] [Indexed: 01/18/2023]
Abstract
SCOPE Mechanistic target of rapamycin (mTOR) serves as a central signaling node in the coordination of cell growth and metabolism, and it functions via two distinct complexes, namely, mTOR complex 1 (mTORC1) and mTORC2. mTORC1 plays a crucial role in sensing amino acids, whereas mTORC2 involves in sensing growth factors. However, it remains largely unclear whether mTORC2 can sense amino acids and the mechanism by which amino acids regulate mTORC2 has not been studied. METHODS AND RESULTS After treating cells with indicated concentration of amino acids for different time, it is found that the mTORC2 activation is significantly increased in response to amino acids stimulation, especially cystine. Particularly, knockdown solute carrier family 7 member 11 (SLC7A11) by siRNA shows that SLC7A11-mediated cystine uptake is responsible for activating mTORC2. Mechanistically, the study finds that p38 is activated in response to cystine stimulation, and co-immunoprecipitation (Co-IP) experiments suggest that p38 regulates the assembly of components within mTORC2 by mediating the phosphorylation of the mTORC2 subunit mitogen-activated protein kinase-interacting protein 1 (Sin1) in a cystine-dependent manner. Finally, combined with inducers and inhibitors of ferroptosis and cell viability assay, the study observes that cystine-mediated regulation of the p38-Sin1-mTOR-AKT pathway induces resistance to ferroptosis. CONCLUSION These results indicate that cystine-induced activation of the p38-Sin1-mTORC2-AKT pathway suppresses ferroptosis.
Collapse
Affiliation(s)
- GuoYan Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Lei Chen
- Division of Laboratory Safety and Services, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - SenLin Qin
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - YiNing Zheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chao Xia
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - JunHu Yao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ping Wang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Lu Deng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| |
Collapse
|
13
|
Oda M, Fujibayashi K, Wakasa M, Takano S, Fujita W, Kitayama M, Nakanishi H, Saito K, Kawai Y, Kajinami K. Increased plasma glutamate in non-smokers with vasospastic angina pectoris is associated with plasma cystine and antioxidant capacity. SCAND CARDIOVASC J 2022; 56:180-186. [PMID: 35695518 DOI: 10.1080/14017431.2022.2085884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Objectives. Endothelial dysfunction caused by oxidative stress plays an important role in the development of vasospastic angina pectoris (VSAP). Glutamate causes endothelial dysfunction by generating oxidative stress, and it inhibits cystine import into endothelial cells via the cystine/glutamate antiporter (XC-), which leads to depletion of antioxidant glutathione. However, whether glutamate and cystine are implicated in the pathogenesis of VSAP remains unclear. We investigated plasma glutamate and cystine levels, oxidative stress markers and antioxidant capacity in non-smoker patients with VSAP to determine whether glutamate and cystine are associated with the development of VSAP. We assessed 49 non-smokers assigned to groups with (n = 27) and without (n = 22) VSAP, and also measured plasma glutamate, cystine, nitrotyrosine, reactive oxygen metabolites and biological antioxidant potential. Results. Plasma glutamate and cystine values were significantly higher in the group with, than without VSAP (59.8 ± 25.7 vs. 43.5 ± 18.7 µmol/L, p = .016 and 35.3 ± 14.2 vs. 25.2 ± 9.1 µmol/L, p = .0056, respectively). Plasma glutamate and cystine values were significantly and positively associated (r = 0.32, p = .027). Levels of the oxidative stress markers nitrotyrosine and reactive oxygen metabolites, and biological antioxidant potential of as a measure of antioxidant capacity, did not significantly differ between the two groups. However, glutamate and biological antioxidant potential values were significantly and negatively associated (r = -0.3, p = .036). Conclusion. Plasma glutamate levels were increased in patients with VSAP who did not smoke, and they were positively associated with plasma cystine and negatively associated with the biological antioxidant potential levels.
Collapse
Affiliation(s)
- Minako Oda
- Department of Cardiology, Kanazawa Medical University, Ishikawa, Japan
| | | | - Minoru Wakasa
- Department of Cardiology, Kanazawa Medical University, Ishikawa, Japan
| | - Shintaro Takano
- Department of Cardiology, Kanazawa Medical University, Ishikawa, Japan
| | - Wataru Fujita
- Department of Cardiology, Kanazawa Medical University, Ishikawa, Japan
| | | | - Hiroaki Nakanishi
- Department of Forensic Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Kazuyuki Saito
- Department of Forensic Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Yasuyuki Kawai
- Department of Cardiology, Kanazawa Medical University, Ishikawa, Japan
| | - Kouji Kajinami
- Department of Cardiology, Kanazawa Medical University, Ishikawa, Japan
| |
Collapse
|
14
|
Mammate N, El Oumari FE, Imtara H, Belchkar S, Lahrichi A, Alqahtani AS, Noman OM, Tarayrah M, Houssaini TS. Antioxidant and Anti-Urolithiatic Activity of Aqueous and Ethanolic Extracts from Saussurea costus (Falc) Lispich Using Scanning Electron Microscopy. Life (Basel) 2022; 12. [PMID: 35888114 DOI: 10.3390/life12071026] [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: 06/04/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 12/14/2022] Open
Abstract
The plant Saussurea costus (Falc) Lipsch has many biological activities and a strong curative and preventive power against a variety of diseases including cancer, diabetes, and hemorrhoids. In the current study, phytochemical screening was carried out as well as an investigation of the antilithiatic and antioxidant activities of aqueous and ethanolic extracts of this plant. The results showed that aqueous and ethanolic extracts were effective in reducing cystine stone mass and that the aqueous extract of Saussurea costus (Falc) Lipsch had the highest percentage of dissolution (6.756 ± 1.024) (p < 0.05). A turbidimetric method and a crystallization test were used to evaluate the antilithiatic activity of an aqueous and ethanolic extract of this plant on calcium oxalate crystallization. The results of these methods revealed that the ethanolic extract of this plant has a significant inhibitory effect on calcium oxalate crystallization, with a percentage inhibition of (91.017 ± 0.299) (p < 0.05) for a concentration of 2 mg mL−1. The DPPH method revealed that the ethanolic extract of Saussurea costus (Falc) Lipsch with a concentration of (IC50 = 0.12325 mg mL−1) had the highest IC50, whereas the FRAP method revealed that the aqueous extract of Saussurea costus (Falc) Lipsch with a concentration of 300 µg mL−1 has the most significant reducing power with (OD = 0.56 ± 0.05). These findings indicate that aqueous and ethanolic extracts of Saussurea costus (Falc) Lipsch had a significant effect on whewellite and weddellite and a greater free radical scavenging effect but had no effect on cystine dissolution.
Collapse
|
15
|
Zheng C, Huang J, Li T, Wang Y, Jiang J, Zhang X, Huang L, Xia B, Dong W. Permanent Low-Toxicity Hair Dye Based on Pregrafting Melanin with Cystine. ACS Biomater Sci Eng 2022; 8:2858-2863. [PMID: 35706331 DOI: 10.1021/acsbiomaterials.2c00415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A pregrafting strategy is presented to construct covalent bridges between synthetic melanin, i.e., polydopamine (PDA), and hair for permanent hair dyeing. As a result, PDA is more uniformly distributed throughout the hair surface, and the dyed hair shows higher color intensity and better durability to washing than the control samples dyed with PDA directly at the same conditions.
Collapse
Affiliation(s)
- Chen Zheng
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jing Huang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Ting Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Yang Wang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jie Jiang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Xuhui Zhang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Lin Huang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Bihua Xia
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| |
Collapse
|
16
|
Hill RA, Liu YY. N 6 -methyladenosine-RNA methylation promotes expression of solute carrier family 7 member 11, an uptake transporter of cystine for lipid reactive oxygen species scavenger glutathione synthesis, leading to hepatoblastoma ferroptosis resistance. Clin Transl Med 2022; 12:e889. [PMID: 35604883 PMCID: PMC9126359 DOI: 10.1002/ctm2.889] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 04/21/2022] [Accepted: 05/05/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
- Ronald A Hill
- School of Basic Pharmaceutical and Toxicological Sciences, the University of Louisiana at Monroe, Monroe, Louisiana, USA
| | - Yong-Yu Liu
- School of Basic Pharmaceutical and Toxicological Sciences, the University of Louisiana at Monroe, Monroe, Louisiana, USA
| |
Collapse
|
17
|
Tsuchiya T, Kurihara S. Cystine and Theanine as Stress-Reducing Amino Acids-Perioperative Use for Early Recovery after Surgical Stress. Nutrients 2021; 14:nu14010129. [PMID: 35011010 PMCID: PMC8746811 DOI: 10.3390/nu14010129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/22/2021] [Accepted: 12/24/2021] [Indexed: 12/14/2022] Open
Abstract
Perioperative nutritional therapy requires the consideration of metabolic changes, and it is desirable to reduce stress aiming at early metabolic normalization. Glutathione (GSH) is a tripeptide composed of glutamic acid, cysteine, and glycine. It is one of the strongest antioxidants in the body and important for adjusting immune function. Cystine and theanine (γ-glutamylethylamide) provide substrates of GSH, cysteine and glutamic acid, promoting the synthesis of GSH. It has been reported that the ingestion of cystine (700 mg) and theanine (280 mg) exhibits inhibitory effects against excess inflammation after strong exercise loads in athletes, based on which its application for invasive surgery has been tried. In patients undergoing gastrectomy, ingestion of cystine (700 mg) and theanine (280 mg) for 10 days from 5 days before surgery inhibited a postoperative increase in resting energy expenditure, promoted recovery from changes in interleukin-6, C-reactive protein, lymphocyte ratio, and granulocyte ratio and inhibited an increase in body temperature. In a mouse small intestine manipulation model, preoperative 5-day administration of cystine/theanine inhibited a postoperative decrease in GSH in the small intestine and promoted recovery from a decrease in behavior quantity. Based on the above, cystine/theanine reduces surgical stress, being useful for perioperative management as stress-reducing amino acids.
Collapse
Affiliation(s)
- Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai 983-0824, Japan;
| | - Shigekazu Kurihara
- Nutrition Care Group, Quick Nourishment Department, Food Products Division, Ajinomoto Co., Inc., Tokyo 104-8315, Japan
- Correspondence: ; Tel.: +81-80-2158-8086
| |
Collapse
|
18
|
Li SJ, Cao B, Lu ZY, Sun RB, Guo SH, Xie Y, Aa JY, Wang GJ. Cystine supplementation rebalances the redox homeostasis of microenvironment in non-small cell lung cancer cells and reverses their resistance to docetaxel. Acta Pharmacol Sin 2021; 42:2132-2143. [PMID: 33658706 PMCID: PMC8632922 DOI: 10.1038/s41401-020-00610-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 09/27/2020] [Accepted: 12/30/2020] [Indexed: 12/22/2022] Open
Abstract
Continuous docetaxel (DTX) treatment of non-small cell lung cancer induces development of drug resistance, but the mechanism is poorly understood. In this study we performed metabolomics analysis to characterize the metabolic patterns of sensitive and resistant A549 non-small cell lung cancer cells (A549/DTX cells). We showed that the sensitive and resistant A549 cells exhibited distinct metabolic phenotypes: the resistant cells were characterized by an altered microenvironment of redox homeostasis with reduced glutathione and elevated reactive oxygen species (ROS). DTX induction reprogrammed the metabolic phenotype of the sensitive cells, which acquired a phenotype similar to that of the resistant cells: it reduced cystine influx, inhibited glutathione biosynthesis, increased ROS and decreased glutathione/glutathione disulfide (GSH/GSSG); the genes involved in glutathione biosynthesis were dramatically depressed. Addition of the ROS-inducing agent Rosup (25, 50 μg/mL) significantly increased P-glycoprotein expression and reduced intracellular DTX in the sensitive A549 cells, which ultimately acquired a phenotype similar to that of the resistant cells. Supplementation of cystine (1.0 mM) significantly increased GSH synthesis, rebalanced the redox homeostasis of A549/DTX cells, and reversed DTX-induced upregulation of P-glycoprotein, and it markedly improved the effects of DTX and inhibited the growth of A549/DTX in vitro and in vivo. These results suggest that microenvironmental redox homeostasis plays a key role in the acquired resistance of A549 cancer cells to DTX. The enhancement of GSH synthesis by supplementary cystine is a promising strategy to reverse the resistance of tumor cells and has potential for translation in the clinic.
Collapse
Affiliation(s)
- Si-Jia Li
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China
| | - Bei Cao
- Phase I Clinical Trials Unit, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Zhen-Yao Lu
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China
| | - Run-Bin Sun
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China
- Phase I Clinical Trials Unit, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Su-Han Guo
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China
| | - Yuan Xie
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China
| | - Ji-Ye Aa
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China.
| | - Guang-Ji Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, China
| |
Collapse
|
19
|
Chatgilialoglu C, Ferreri C. Reductive Stress of Sulfur-Containing Amino Acids within Proteins and Implication of Tandem Protein-Lipid Damage. Int J Mol Sci 2021; 22:12863. [PMID: 34884668 DOI: 10.3390/ijms222312863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 10/23/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 12/23/2022] Open
Abstract
Reductive radical stress represents the other side of the redox spectrum, less studied but equally important compared to oxidative stress. The reactivity of hydrogen atoms (H•) and hydrated electrons (e-aq) connected with peptides/proteins is summarized, focusing on the chemical transformations of methionine (Met) and cystine (CysS-SCys) residues into α-aminobutyric acid and alanine, respectively. Chemical and mechanistic aspects of desulfurization processes with formation of diffusible sulfur-centered radicals, such as methanethiyl (CH3S•) and sulfhydryl (HS•) radicals, are discussed. These findings are further applied to biomimetic radical chemistry, modeling the occurrence of tandem protein-lipid damages in proteo-liposomes and demonstrating that generation of sulfur-centered radicals from a variety of proteins is coupled with the cis-trans isomerization of unsaturated lipids in membranes. Recent applications to pharmaceutical and pharmacological contexts are described, evidencing novel perspectives in the stability of formulations and mode of action of drugs, respectively.
Collapse
|
20
|
Yano Y, Maeda C, Kaneko I, Kobayashi Y, Aoi W, Kuwahata M. Cystine supplementation sustains plasma mercaptalbumin levels in rats fed low-protein diets more effectively than methionine. J Clin Biochem Nutr 2021; 69:122-130. [PMID: 34616103 PMCID: PMC8482384 DOI: 10.3164/jcbn.20-146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/03/2020] [Accepted: 11/01/2020] [Indexed: 11/22/2022] Open
Abstract
We recently reported that dietary cystine maintained plasma mercaptalbumin levels in rats fed low-protein diets. The present study aimed to compare the influence of low-protein diets supplemented with cystine and methionine, which is another sulfur amino acid, on plasma mercaptalbumin levels in rats. Male Sprague-Dawley rats were fed a 20% soy protein isolate diet (control group), 5% soy protein isolate diet (low-protein group) or 5% soy protein isolate diet supplemented with either methionine (low-protein + Met group) or cystine (low-protein + Cyss group) for 1 week. The percentage of mercaptalbumin within total plasma albumin of the low-protein + Met group was significantly lower than that of the control and low-protein + Cyss groups. No significant differences in the mRNA levels of tumor necrosis factor-α, interleukin-6, interleukin-1β, and cyclooxygenase 2 in blood cells were observed between the low-protein + Met and low-protein + Cyss groups. Treatment with buthionine-(S,R)-sulfoximine, an inhibitor of glutathione synthesis, did not influence the percentage of mercaptalbumin within total plasma albumin in rats fed the low-protein diet supplemented with cystine. These results suggest that supplementation with cystine may be more effective than that with methionine to maintain plasma mercaptalbumin levels in rats with protein malnutrition. Cystine might regulate plasma mercaptalbumin levels via the glutathione-independent pathway.
Collapse
Affiliation(s)
- Yukimi Yano
- Department of Nutrition Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo-hangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| | - Chihiro Maeda
- Department of Nutrition Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo-hangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| | - Ichiro Kaneko
- Department of Applied Nutrition, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto, Tokushima 770-8503, Japan
| | - Yukiko Kobayashi
- Department of Nutrition Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo-hangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| | - Wataru Aoi
- Department of Nutrition Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo-hangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| | - Masashi Kuwahata
- Department of Nutrition Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo-hangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| |
Collapse
|
21
|
Wessels AG, Chalvon-Demersey T, Zentek J. Use of low dosage amino acid blends to prevent stress-related piglet diarrhea. Transl Anim Sci 2021; 5:txab209. [PMID: 34805771 PMCID: PMC8599283 DOI: 10.1093/tas/txab209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/18/2021] [Accepted: 10/25/2021] [Indexed: 12/14/2022] Open
Abstract
Weaning is a challenging period for piglets associated with reduced feed intake, impairment of gut integrity, and diarrhea. Previous studies demonstrate that supplementation with single functional amino acids (AA) promote piglets' performance due to the improvement of intestinal health. Thus, we hypothesized that a combination of functional AA provided beyond the postulated requirement for growth could facilitate the weaning transition. Ninety piglets, initially stressed after weaning by 100 min overland transport, received a control diet or the same diet supplemented with a low-dosed (0.3%) mixture of AA (AAB-1: L-arginine, L-leucine, L-valine, L-isoleucine, L-cystine; AAB-2: L-arginine, L-leucine, L-valine, L-isoleucine, L-cystine, and L-tryptophan) for 28 days. Fecal consistency was ranked daily, growth performance was assessed weekly. On days 1 and 14 of the trial, blood samples were collected from a subset of 10 piglets per group to assess concentrations of insulin-like growth factor 1. After 28 days of feeding, tissues were obtained from the same piglets to analyze gut morphology and relative mRNA expression of genes related to gut function. Even if the stress response as indicated by rectal temperature was not different between the groups, pigs supplemented with AAB-2 showed firmer feces after weaning and less days with diarrhea compared to control. Furthermore, the jejunal expression of the MUC-2 gene was reduced (P < 0.05) in group AAB-2. Both AA mixtures increased crypt depth in the duodenum. Collectively, the given results indicate that 0.3% extra AA supplementation might alleviate postweaning diarrhea but did not alter growth performance of weanling piglets.
Collapse
Affiliation(s)
- Anna G Wessels
- Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität Berlin, Königin-Luise-Str. 49, 14195 Berlin, Germany
| | | | - Jürgen Zentek
- Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität Berlin, Königin-Luise-Str. 49, 14195 Berlin, Germany
| |
Collapse
|
22
|
Correia MJ, Pimpão AB, Lopes-Coelho F, Sequeira CO, Coelho NR, Gonçalves-Dias C, Barouki R, Coumoul X, Serpa J, Morello J, Monteiro EC, Pereira SA. Aryl Hydrocarbon Receptor and Cysteine Redox Dynamics Underlie (Mal)adaptive Mechanisms to Chronic Intermittent Hypoxia in Kidney Cortex. Antioxidants (Basel) 2021; 10:antiox10091484. [PMID: 34573115 PMCID: PMC8469308 DOI: 10.3390/antiox10091484] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 07/02/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 12/31/2022] Open
Abstract
We hypothesized that an interplay between aryl hydrocarbon receptor (AhR) and cysteine-related thiolome at the kidney cortex underlies the mechanisms of (mal)adaptation to chronic intermittent hypoxia (CIH), promoting arterial hypertension (HTN). Using a rat model of CIH-HTN, we investigated the impact of short-term (1 and 7 days), mid-term (14 and 21 days, pre-HTN), and long-term intermittent hypoxia (IH) (up to 60 days, established HTN) on CYP1A1 protein level (a sensitive hallmark of AhR activation) and cysteine-related thiol pools. We found that acute and chronic IH had opposite effects on CYP1A1 and the thiolome. While short-term IH decreased CYP1A1 and increased protein-S-thiolation, long-term IH increased CYP1A1 and free oxidized cysteine. In addition, an in vitro administration of cystine, but not cysteine, to human endothelial cells increased Cyp1a1 expression, supporting cystine as a putative AhR activator. This study supports CYP1A1 as a biomarker of obstructive sleep apnea (OSA) severity and oxidized pools of cysteine as risk indicator of OSA-HTN. This work contributes to a better understanding of the mechanisms underlying the phenotype of OSA-HTN, mimicked by this model, which is in line with precision medicine challenges in OSA.
Collapse
Affiliation(s)
- Maria João Correia
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - António B. Pimpão
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - Filipa Lopes-Coelho
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
- Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Rua Prof Lima Basto, 1099-023 Lisboa, Portugal
| | - Catarina O. Sequeira
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - Nuno R. Coelho
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - Clara Gonçalves-Dias
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - Robert Barouki
- INSERM UMR-S 1124, 3TS, Environmental Toxicity, Therapeutic Targets, Cellular Signaling and Biomarkers, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France; (R.B.); (X.C.)
| | - Xavier Coumoul
- INSERM UMR-S 1124, 3TS, Environmental Toxicity, Therapeutic Targets, Cellular Signaling and Biomarkers, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France; (R.B.); (X.C.)
| | - Jacinta Serpa
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
- Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Rua Prof Lima Basto, 1099-023 Lisboa, Portugal
| | - Judit Morello
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - Emília C. Monteiro
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
| | - Sofia A. Pereira
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (F.L.-C.); (C.O.S.); (N.R.C.); (C.G.-D.); (J.S.); (J.M.); (E.C.M.)
- Correspondence:
| |
Collapse
|
23
|
Yang H, Zheng H, Pan Y, Zhang W, Yang M, Du H, Yu A, Li P, Chen X, Xie W, Ren K, Zhao Y, Wang T, He X, Zhou Z. Quantitative proteomic analysis of the effects of dietary deprivation of methionine and cystine on A549 xenograft and A549 xenograft-bearing mouse. Proteomics 2021; 21:e2100007. [PMID: 34482643 DOI: 10.1002/pmic.202100007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 01/12/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 11/11/2022]
Abstract
Methionine (Met) and cystine (CySS) are key sulfur donors in cell metabolism and are important nutrients for sustaining tumor growth; however, the molecular effects associated with their deprivation remain to be characterized. Here, we applied a xenograft mouse model to assess the impact of their deprivation on A549 xenografts and the xenograft-bearing animal. Results show that Met and CySS deprivation inhibits A549 growth in vitro, not in vivo. Deprivation was detrimental to the xenograft-bearing mouse, as demonstrated by weight loss and renal dysfunction. Differentially expressed proteins in A549 xenograft and mouse kidneys were characterized using quantitative proteomics. Functional annotation and protein-protein interaction network analysis revealed the enriched signaling pathways, including focal adhesion (Fn1) in the A549 xenograft, and xenobiotic metabolism (Cyp2e1) and glutathione metabolism (Ggt1) in the mouse kidney. Met and CySS deprivation inhibits the migratory and invasive properties of cancer cells, as evidenced by reduced expression of the epithelial to mesenchymal transition marker N-cadherin in A549 cells in vitro. Moreover, IGFBP1 protein expression was inhibited in both A549 xenograft and mouse kidneys. This study provides the first insights into changes within the proteome profile and biological processes upon Met and CySS deprivation in a A549 xenograft mouse model.
Collapse
Affiliation(s)
- Hao Yang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Haoyang Zheng
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Yue Pan
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Weiguo Zhang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Mengjing Yang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Huiling Du
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Anan Yu
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Ping Li
- School of Medical Instrument, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Xiaoyan Chen
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Medical Technology, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Wei Xie
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Kaiming Ren
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ying Zhao
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tianjiao Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Xiaoyan He
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Zhaoli Zhou
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.,School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai, China
| |
Collapse
|
24
|
Nunes SC, Ramos C, Santos I, Mendes C, Silva F, Vicente JB, Pereira SA, Félix A, Gonçalves LG, Serpa J. Cysteine Boosts Fitness Under Hypoxia-Mimicked Conditions in Ovarian Cancer by Metabolic Reprogramming. Front Cell Dev Biol 2021; 9:722412. [PMID: 34458274 PMCID: PMC8386479 DOI: 10.3389/fcell.2021.722412] [Citation(s) in RCA: 14] [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: 06/08/2021] [Accepted: 07/13/2021] [Indexed: 01/20/2023] Open
Abstract
Among gynecologic malignancies, ovarian cancer is the third most prevalent and the most common cause of death, especially due to diagnosis at an advanced stage together with resistance to therapy. As a solid tumor grows, cancer cells in the microenvironment are exposed to regions of hypoxia, a selective pressure prompting tumor progression and chemoresistance. We have previously shown that cysteine contributes to the adaptation to this hypoxic microenvironment, but the mechanisms by which cysteine protects ovarian cancer cells from hypoxia-induced death are still to be unveiled. Herein, we hypothesized that cysteine contribution relies on cellular metabolism reprogramming and energy production, being cysteine itself a metabolic source. Our results strongly supported a role of xCT symporter in energy production that requires cysteine metabolism instead of hydrogen sulfide (H2S) per se. Cysteine degradation depends on the action of the H2S-synthesizing enzymes cystathionine β-synthase (CBS), cystathionine γ-lyase (CSE), and/or 3-mercaptopyruvate sulfurtransferase (MpST; together with cysteine aminotransferase, CAT). In normoxia, CBS and CSE inhibition had a mild impact on cysteine-sustained ATP production, pointing out the relevance of CAT + MpST pathway. However, in hypoxia, the concomitant inhibition of CBS and CSE had a stronger impact on ATP synthesis, thus also supporting a role of their hydrogen sulfide and/or cysteine persulfide-synthesizing activity in this stressful condition. However, the relative contributions of each of these enzymes (CBS/CSE/MpST) on cysteine-derived ATP synthesis under hypoxia remains unclear, due to the lack of specific inhibitors. Strikingly, NMR analysis strongly supported a role of cysteine in the whole cellular metabolism rewiring under hypoxia. Additionally, the use of cysteine to supply biosynthesis and bioenergetics was reinforced, bringing cysteine to the plateau of a main carbon sources in cancer. Collectively, this work supports that sulfur and carbon metabolism reprogramming underlies the adaptation to hypoxic microenvironment promoted by cysteine in ovarian cancer.
Collapse
Affiliation(s)
- Sofia C. Nunes
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Cristiano Ramos
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Inês Santos
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Cindy Mendes
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Fernanda Silva
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - João B. Vicente
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Sofia A. Pereira
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Ana Félix
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Luís G. Gonçalves
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Jacinta Serpa
- Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
- Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| |
Collapse
|
25
|
Liu X, Gan B. Glucose starvation induces NADPH collapse and disulfide stress in SLC7A11 high cancer cells. Oncotarget 2021; 12:1629-1630. [PMID: 34381568 PMCID: PMC8351606 DOI: 10.18632/oncotarget.27993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 11/25/2022] Open
|
26
|
Okamoto K, Saito Y, Ueda H, Narumi K, Furugen A, Kobayashi M. Kinetic analysis of cystine uptake and inhibition pattern of sulfasalazine in A549 cells. Biopharm Drug Dispos 2021; 42:389-392. [PMID: 34287957 DOI: 10.1002/bdd.2298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 03/23/2021] [Revised: 06/12/2021] [Accepted: 07/08/2021] [Indexed: 01/17/2023]
Abstract
Cystine/glutamate transporter (xCT) is an antiporter involved in cystine uptake and glutamate efflux. However, there are very few reports regarding the kinetic analysis of xCT for cystine uptake using cancer cell lines, as well as the inhibition pattern of sulfasalazine, an inhibitor of xCT, for cystine uptake. Therefore, the purpose of this study was to clarify the kinetics of xCT in A549 cells, human lung cancer cells, and to reveal the inhibition pattern of sulfasalazine. Cystine uptake occurred in a time-dependent manner, with linear cystine uptake observed for 5 min. Additionally, sulfasalazine inhibited cystine uptake in a concentration-dependent manner, presenting an IC50 value of 24.7 ± 5.6 μM. Cystine uptake was saturated with increasing concentration, demonstrating Km and Vmax values of 179.4 ± 26.7 μM and 30.4 ± 2.3 nmol/min/mg protein, respectively. Moreover, during cystine uptake with sulfasalazine, Km and Vmax were >300 μM and 8.0 ± 1.5 nmol/min/mg protein, respectively, suggesting that sulfasalazine might demonstrate a mixed inhibition pattern. Furthermore, xCT siRNA decreased the xCT mRNA level and reduced cystine uptake. In conclusion, xCT was involved in the cystine uptake in A549 cells and sulfasalazine showed a mixed inhibition pattern to xCT.
Collapse
Affiliation(s)
- Keisuke Okamoto
- Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Yoshitaka Saito
- Department of Pharmacy, Hokkaido University Hospital, Sapporo, Japan
| | - Hinata Ueda
- Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Katsuya Narumi
- Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Ayako Furugen
- Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Masaki Kobayashi
- Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| |
Collapse
|
27
|
Verbruggen L, Sprimont L, Bentea E, Janssen P, Gharib A, Deneyer L, De Pauw L, Lara O, Sato H, Nicaise C, Massie A. Chronic Sulfasalazine Treatment in Mice Induces System x c - - Independent Adverse Effects. Front Pharmacol 2021; 12:625699. [PMID: 34084129 PMCID: PMC8167035 DOI: 10.3389/fphar.2021.625699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/03/2020] [Accepted: 04/26/2021] [Indexed: 01/17/2023] Open
Abstract
Despite ample evidence for the therapeutic potential of inhibition of the cystine/glutamate antiporter system xc− in neurological disorders and in cancer, none of the proposed inhibitors is selective. In this context, a lot of research has been performed using the EMA- and FDA-approved drug sulfasalazine (SAS). Even though this molecule is already on the market for decades as an anti-inflammatory drug, serious side effects due to its use have been reported. Whereas for the treatment of the main indications, SAS needs to be cleaved in the intestine into the anti-inflammatory compound mesalazine, it needs to reach the systemic circulation in its intact form to allow inhibition of system xc−. The higher plasma levels of intact SAS (or its metabolites) might induce adverse effects, independent of its action on system xc−. Some of these effects have however been attributed to system xc− inhibition, calling into question the safety of targeting system xc−. In this study we chronically treated system xc− - deficient mice and their wildtype littermates with two different doses of SAS (160 mg/kg twice daily or 320 mg/kg once daily, i.p.) and studied some of the adverse effects that were previously reported. SAS had a negative impact on the survival rate, the body weight, the thermoregulation and/or stress reaction of mice of both genotypes, and thus independent of its inhibitory action on system xc−. While SAS decreased the total distance travelled in the open-field test the first time the mice encountered the test, it did not influence this parameter on the long-term and it did not induce other behavioral changes such as anxiety- or depressive-like behavior. Finally, no major histological abnormalities were observed in the spinal cord. To conclude, we were unable to identify any undesirable system xc−-dependent effect of chronic administration of SAS.
Collapse
Affiliation(s)
- Lise Verbruggen
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Lindsay Sprimont
- Laboratory Neurodegeneration and Regeneration, URPHyM-NARILIS, Université de Namur, Namur, Belgium
| | - Eduard Bentea
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Pauline Janssen
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Azzedine Gharib
- Laboratory Neurodegeneration and Regeneration, URPHyM-NARILIS, Université de Namur, Namur, Belgium
| | - Lauren Deneyer
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Laura De Pauw
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Olaya Lara
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Hideyo Sato
- Department of Medical Technology, Niigata University, Niigata, Japan
| | - Charles Nicaise
- Laboratory Neurodegeneration and Regeneration, URPHyM-NARILIS, Université de Namur, Namur, Belgium
| | - Ann Massie
- Laboratory of Neuro-Aging & Viro-Immunotherapy, Vrije Universiteit Brussel, Brussels, Belgium
| |
Collapse
|
28
|
Kopecny L, Palm CA, Segev G, Westropp JL. Urolithiasis in dogs: Evaluation of trends in urolith composition and risk factors (2006-2018). J Vet Intern Med 2021; 35:1406-1415. [PMID: 33960543 PMCID: PMC8162591 DOI: 10.1111/jvim.16114] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 06/13/2020] [Revised: 03/18/2021] [Accepted: 03/21/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Urolithiasis is a common and often recurrent problem in dogs. OBJECTIVE To evaluate trends in urolith composition in dogs and to assess risk factors for urolithiasis, including age, breed, sex, neuter status, urolith location, and bacterial urolith cultures. SAMPLE POPULATION A total of 10 444 uroliths and the dogs from which they were obtained. METHODS The laboratory database at the UC Davis Gerald V. Ling Urinary Stone Analysis Laboratory was searched for all urolith submissions from dogs between January 2006 and December 2018. Mineral type, age, breed, sex, neuter status, urolith location, and urolith culture were recorded. Trends were evaluated and variables compared to evaluate risk factors. RESULTS Calcium oxalate (CaOx) and struvite-containing uroliths comprised the majority of all submissions from dogs, representing 47.0% and 43.6%, respectively. The proportion of CaOx-containing uroliths significantly decreased from 49.5% in 2006 to 41.8% in 2018 (P = .006), with no change in the proportion of struvite-containing urolith submissions. Cystine-containing uroliths comprised 2.7% of all submissions between 2006 and 2018 and a significant nonlinear increase in this mineral type occurred over time (1.4% of all submissions in 2006 to 8.7% in 2018; P < .001). Of all cystine-containing uroliths, 70.3% were from intact male dogs. Age, breed, and sex predispositions for uroliths were similar to those previously identified. CONCLUSIONS AND CLINICAL IMPORTANCE Although calcium oxalate- and struvite-containing uroliths continue to be the most common uroliths submitted from dogs, a decrease in the proportion of CaOx-containing uroliths and an increase in the proportion of cystine-containing uroliths occurred during the time period evaluated.
Collapse
Affiliation(s)
- Lucy Kopecny
- Department of Veterinary Medicine and Epidemiology, University of California Davis, Davis, California, USA
| | - Carrie A Palm
- Department of Veterinary Medicine and Epidemiology, University of California Davis, Davis, California, USA
| | - Gilad Segev
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Jodi L Westropp
- Department of Veterinary Medicine and Epidemiology, University of California Davis, Davis, California, USA
| |
Collapse
|
29
|
Yan Y, Lei G, Gan B. A mTORC1-mediated cyst(e)ine sensing mechanism governing GPX4 synthesis and ferroptosis. Mol Cell Oncol 2021; 8:1919006. [PMID: 34027051 DOI: 10.1080/23723556.2021.1919006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Ferroptosis is a cell death mechanism triggered by lipid peroxidation. Our recent study linked cyst(e)ine availability with glutathione peroxidase 4 (GPX4) protein synthesis and ferroptosis mitigation via a Rag-mechanistic target of rapamycin complex 1 (mTORC1) axis, and proposed that co-targeting mTORC1 and ferroptosis is a promising strategy for cancer therapy.
Collapse
Affiliation(s)
- Yuelong Yan
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guang Lei
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Boyi Gan
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,The University of Texas MD Anderson UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| |
Collapse
|
30
|
Torrence ME, MacArthur MR, Hosios AM, Valvezan AJ, Asara JM, Mitchell JR, Manning BD. The mTORC1-mediated activation of ATF4 promotes protein and glutathione synthesis downstream of growth signals. eLife 2021; 10:e63326. [PMID: 33646118 PMCID: PMC7997658 DOI: 10.7554/elife.63326] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 02/26/2021] [Indexed: 12/16/2022] Open
Abstract
The mechanistic target of rapamycin complex 1 (mTORC1) stimulates a coordinated anabolic program in response to growth-promoting signals. Paradoxically, recent studies indicate that mTORC1 can activate the transcription factor ATF4 through mechanisms distinct from its canonical induction by the integrated stress response (ISR). However, its broader roles as a downstream target of mTORC1 are unknown. Therefore, we directly compared ATF4-dependent transcriptional changes induced upon insulin-stimulated mTORC1 signaling to those activated by the ISR. In multiple mouse embryo fibroblast and human cancer cell lines, the mTORC1-ATF4 pathway stimulated expression of only a subset of the ATF4 target genes induced by the ISR, including genes involved in amino acid uptake, synthesis, and tRNA charging. We demonstrate that ATF4 is a metabolic effector of mTORC1 involved in both its established role in promoting protein synthesis and in a previously unappreciated function for mTORC1 in stimulating cellular cystine uptake and glutathione synthesis.
Collapse
Affiliation(s)
- Margaret E Torrence
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public HealthBostonUnited States
| | - Michael R MacArthur
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public HealthBostonUnited States
- Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH) ZurichZurichSwitzerland
| | - Aaron M Hosios
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public HealthBostonUnited States
| | - Alexander J Valvezan
- Center for Advanced Biotechnology and Medicine, Department of Pharmacology, Rutgers Robert Wood Johnson Medical SchoolPiscatawayUnited States
| | - John M Asara
- Division of Signal Transduction, Beth Israel Deaconess Medical Center and Department of Medicine, Harvard Medical SchoolBostonUnited States
| | - James R Mitchell
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public HealthBostonUnited States
- Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH) ZurichZurichSwitzerland
| | - Brendan D Manning
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public HealthBostonUnited States
| |
Collapse
|
31
|
Gillion V, Saussez TP, Van Nieuwenhove S, Jadoul M. Extremely rapid stone formation in cystinuria: look out for dietary supplements! Clin Kidney J 2021; 14:1694-1696. [PMID: 34084466 PMCID: PMC8162847 DOI: 10.1093/ckj/sfab013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 11/12/2022] Open
Abstract
Cystinuria is an autosomal recessive disease characterized by recurrent nephrolithiasis. The prevention of new stones is based on diluting and alkalinizing urine, as well as a low salt and moderate protein intake. The avoidance of food rich in methionine (the precursor of cystine) is also advocated. We report the case of a young adult adherent to the preventative strategy who was stone-free and within months formed a large stone. This coincided with the recent intake of a dietary supplement containing both cystine and methionine. Patients and physicians should be aware of the potential harm of such supplements in patients with cystinuria.
Collapse
Affiliation(s)
- Valentine Gillion
- Nephrology Department, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
| | - Thibaud-Pierre Saussez
- Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium.,Urology Department, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Sandy Van Nieuwenhove
- Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium.,Radiology Department, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Michel Jadoul
- Nephrology Department, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
| |
Collapse
|
32
|
Kang YP, Mockabee-Macias A, Jiang C, Falzone A, Prieto-Farigua N, Stone E, Harris IS, DeNicola GM. Non-canonical Glutamate-Cysteine Ligase Activity Protects against Ferroptosis. Cell Metab 2021; 33:174-189.e7. [PMID: 33357455 PMCID: PMC7839835 DOI: 10.1016/j.cmet.2020.12.007] [Citation(s) in RCA: 140] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/09/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023]
Abstract
Cysteine is required for maintaining cellular redox homeostasis in both normal and transformed cells. Deprivation of cysteine induces the iron-dependent form of cell death known as ferroptosis; however, the metabolic consequences of cysteine starvation beyond impairment of glutathione synthesis are poorly characterized. Here, we find that cystine starvation of non-small-cell lung cancer cell lines induces an unexpected accumulation of γ-glutamyl-peptides, which are produced due to a non-canonical activity of glutamate-cysteine ligase catalytic subunit (GCLC). This activity is enriched in cell lines with high levels of NRF2, a key transcriptional regulator of GCLC, but is also inducible in healthy murine tissues following cysteine limitation. γ-glutamyl-peptide synthesis limits the accumulation of glutamate, thereby protecting against ferroptosis. These results indicate that GCLC has a glutathione-independent, non-canonical role in the protection against ferroptosis by maintaining glutamate homeostasis under cystine starvation.
Collapse
Affiliation(s)
- Yun Pyo Kang
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA
| | | | - Chang Jiang
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Aimee Falzone
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA
| | | | - Everett Stone
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Isaac S Harris
- University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Gina M DeNicola
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA.
| |
Collapse
|
33
|
Kuganesan N, Dlamini S, McDaniel J, Tillekeratne VLM, Taylor WR. Identification and initial characterization of a potent inhibitor of ferroptosis. J Cell Biochem 2020; 122:413-424. [PMID: 33377232 DOI: 10.1002/jcb.29870] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/12/2020] [Accepted: 11/03/2020] [Indexed: 01/17/2023]
Abstract
Ferroptosis is a form of iron-dependent cell death characterized by elevated lipid peroxides and reactive oxygen species (ROS). Glutathione (GSH) plays an essential role in scavenging ROS to maintain cell viability and acts as a cofactor of GSH peroxidase 4 (GPX4) that protects lipids from oxidation. We have previously described a novel class of small molecules that induce ferroptosis in certain types of cancer cells. These compounds induce ferroptosis by blocking the uptake of cystine required for GSH synthesis. Even though ferroptosis is a well-established form of cell death, signaling pathways that modulate this process are not known. Therefore, we used a panel of growth factors/kinase inhibitors to test effects on ferroptosis induced by our lead compound. We discovered that BMS536924, a dual inhibitor of insulin-like growth and insulin receptors, is a potent inhibitor of ferroptosis. Further investigation indicated that the anti-ferroptotic activity of BMS536924 does not lie in its ability to inhibit insulin signal transduction. Instead, we provide evidence that BMS536924 binds iron, an essential cofactor in ferroptosis. Our results suggest caution in interpreting the effects of BMS536924 in investigations of insulin signaling and uncover a novel ferroptosis inhibitor.
Collapse
Affiliation(s)
- Nishanth Kuganesan
- Department of Biological Sciences, University of Toledo, Toledo, Ohio, USA
| | - Samkeliso Dlamini
- Department of Medicinal and Biological Chemistry, University of Toledo, Toledo, Ohio, USA
| | - Jade McDaniel
- Department of Medicinal and Biological Chemistry, University of Toledo, Toledo, Ohio, USA
| | | | - William R Taylor
- Department of Biological Sciences, University of Toledo, Toledo, Ohio, USA
| |
Collapse
|
34
|
Obata F, Yu G, Ohta H, Susuki N, Shimazaki M, Nishimura S, Hanai M. Dietary Cystine Ameliorates Defects in Spermatogenesis via Testosterone Production Induced by Protein Deficiency and Darkness in Rats. J Nutr Sci Vitaminol (Tokyo) 2020; 66:86-90. [PMID: 32115459 DOI: 10.3177/jnsv.66.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Nutrition and light-dark cycle influence rat testicular development. With 9% casein diet (low protein diet) under normal 12 h-12 h lighting cycles (9P), juvenile rat testes undergo normal growth. On the other hand, a low protein diet with constant darkness (D9P) results in a growth arrest of rat testes. Supplementation of cystine to the low protein diet under constant darkness (D9PC) had a tendency to increase testes weight, suggesting an improvement in growth suppression. Whether the growth suppression of testes in D9P is associated with suppression of spermatogenesis has not yet been shown. We aimed to determine the effect of a low protein diet and constant darkness with or without dietary cystine in testes using a histological technique. In the histological assessment, D9P testes showed a decreased number of seminiferous tubules with elongated spermatids, indicating a functional testicular defect in this group. However, cystine supplementation resulted in enhanced spermatogenesis versus control animals (D9PC vs. D9P) implying the importance of cystine to testicular development in this condition. Furthermore, serum testosterone concentration was increased in D9PC suggesting contribution of testosterone to ameliorate spermatogenesis. From these results, we conclude that cystine supplementation to a low protein diet under constant darkness promoted an increase in testosterone which in turn benefitted spermatogenesis.
Collapse
Affiliation(s)
- Fumiko Obata
- Department of Molecular Pathology, Graduate School of Medicine, University of Yamanashi
| | - Guannan Yu
- Department of Molecular Pathology, Graduate School of Medicine, University of Yamanashi
| | - Haruka Ohta
- Department of Nutrition and Life Science, Kanagawa Institute of Technology
| | - Naoto Susuki
- Department of Nutrition and Life Science, Kanagawa Institute of Technology
| | - Mariko Shimazaki
- Department of Nutrition and Life Science, Kanagawa Institute of Technology
| | - Saori Nishimura
- Department of Nutrition and Life Science, Kanagawa Institute of Technology
| | - Miho Hanai
- Department of Nutrition and Life Science, Kanagawa Institute of Technology
| |
Collapse
|
35
|
Hogg PJ. Multiple Disulfide-Bonded States of Native Proteins: Estimate of Number Using Probabilities of Disulfide Bond Formation. Molecules 2020; 25:molecules25235729. [PMID: 33291690 PMCID: PMC7730261 DOI: 10.3390/molecules25235729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 11/17/2022] Open
Abstract
The polypeptide backbone of proteins is held together by two main types of covalent bonds: the peptide bonds that link the amino acid residues and the disulfide bonds that link pairs of cysteine amino acids. Disulfide bonds form as a protein folds in the cell and formation was assumed to be complete when the mature protein emerges. This is not the case for some secreted human blood proteins. The blood clotting protein, fibrinogen, and the protease inhibitor, α2-macroglobulin, exist in multiple disulfide-bonded or covalent states in the circulation. Thousands of different states are predicted assuming no dependencies on disulfide bond formation. In this study, probabilities for disulfide bond formation are employed to estimate numbers of covalent states of a model polypeptide with reference to α2-macroglobulin. When disulfide formation is interdependent in a protein, the number of covalent states is greatly reduced. Theoretical estimates of the number of states will aid the conceptual and experimental challenges of investigating multiple disulfide-bonded states of a protein.
Collapse
Affiliation(s)
- Philip J. Hogg
- The Centenary Institute, Camperdown, NSW 2050, Australia; ; Tel.: +61-2-8627-4716
- NHMRC Clinical Trials Centre, University of Sydney, Camperdown, NSW 2006, Australia
| |
Collapse
|
36
|
Oz O, Koyuncu I, Gonel A. A Pilot Study for Investigation of Plasma Amino Acid Profile in Neurofibromatosis Type 1 Patients. Comb Chem High Throughput Screen 2020; 25:114-122. [PMID: 33280590 DOI: 10.2174/1386207323666201204143206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/19/2020] [Revised: 11/01/2020] [Accepted: 11/09/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Neurofibromatosis, also known as Von Recklinghausen disease, is a systemic and progressive genetic disease that primarily affects the skin, eyes, nervous system and bones. The disease can occur in a variety of ways and can vary from individuals. Metabolomic-based research using blood samples has enabled new diagnostic methods to be used in the diagnosis of various diseases, especially cancer. Among metabolites, profiling of plasma free amino acids (PFAA) is a promising approach because PFAAs bind all organ systems and play an important role in metabolism. OBJECTIVE This study aimed to determine the characteristics of PFAA profiles in neurofibromatosis patients and the possibility of using them for early detection and treatment of the disease. METHOD Patients with a diagnosis of Neurofibromatosis Type I confirmed by genetic analysis and healthy individuals of the same age group without any disease were included in the study. We analysed the nineteen plasma free amino acids (phenylalanine, proline, threonine, arginine, asparagine, cystine, valine, glutamate, tyrosine, serine, glutamine, glycine, tryptophane, leucine, lysine, methionine, isoleucine, aspartate and alanine) from neurofibromatosis Type I patients and control group by liquid chromatography tandem mass spectrometry (LC-MS/MS) in Metabolism Laboratory of Harran University Research and Application Hospital. The results of the plasma free amino acid levels were divided into 3 groups as essential, semi-essential and non-essential. The differences of amino acid levels between groups were determined. RESULTS Eight amino acid levels (methionine, arginine, cystine, glutamine, proline, asparagine, serine, aspartate) were significantly altered in patients with neurofibromatosis type 1. In essential amino acids, methionine levels were significantly higher in the patient group than the control group. While the levels of arginine and glutamine in semi-essential amino acids were statistically significantly higher in the patient group, a significant decrease was observed in cystine and proline levels compared to the control group's amino acid levels. In non-essential amino acids group, asparagine, serine and aspartate amino acid levels were significantly higher in the patient group compared to the control group. CONCLUSION The current research predicates that eight amino acids, nsmely methionine, arginine, cystine, glutamine, proline, asparagine, serine, aspartate can be considered to be valuable biomarkers for neurofibromatosis type I. This present study is the first to build models for neurofibromatosis Type I screening using plasma free amino acids and the amino acid profile will guide the predicting of the complications that may occur during the course of the disease.
Collapse
Affiliation(s)
- Ozlem Oz
- Department of Medical Genetics, Harran University. Turkey
| | - Ismail Koyuncu
- Department of Medicinal Biochemistry, Harran University. Turkey
| | - Ataman Gonel
- Department of Medicinal Biochemistry, Harran University. Turkey
| |
Collapse
|
37
|
Koppula P, Zhuang L, Gan B. Cystine transporter SLC7A11/xCT in cancer: ferroptosis, nutrient dependency, and cancer therapy. Protein Cell 2021; 12:599-620. [PMID: 33000412 DOI: 10.1007/s13238-020-00789-5] [Citation(s) in RCA: 765] [Impact Index Per Article: 191.3] [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: 07/28/2020] [Accepted: 08/28/2020] [Indexed: 02/06/2023] Open
Abstract
The cystine/glutamate antiporter SLC7A11 (also commonly known as xCT) functions to import cystine for glutathione biosynthesis and antioxidant defense and is overexpressed in multiple human cancers. Recent studies revealed that SLC7A11 overexpression promotes tumor growth partly through suppressing ferroptosis, a form of regulated cell death induced by excessive lipid peroxidation. However, cancer cells with high expression of SLC7A11 (SLC7A11high) also have to endure the significant cost associated with SLC7A11-mediated metabolic reprogramming, leading to glucose- and glutamine-dependency in SLC7A11high cancer cells, which presents potential metabolic vulnerabilities for therapeutic targeting in SLC7A11high cancer. In this review, we summarize diverse regulatory mechanisms of SLC7A11 in cancer, discuss ferroptosis-dependent and -independent functions of SLC7A11 in promoting tumor development, explore the mechanistic basis of SLC7A11-induced nutrient dependency in cancer cells, and conceptualize therapeutic strategies to target SLC7A11 in cancer treatment. This review will provide the foundation for further understanding SLC7A11 in ferroptosis, nutrient dependency, and tumor biology and for developing novel effective cancer therapies.
Collapse
|
38
|
Zhang T, Bauer C, Newman AC, Uribe AH, Athineos D, Blyth K, Maddocks ODK. Polyamine pathway activity promotes cysteine essentiality in cancer cells. Nat Metab 2020; 2:1062-1076. [PMID: 32747794 PMCID: PMC7614128 DOI: 10.1038/s42255-020-0253-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 06/26/2020] [Indexed: 02/05/2023]
Abstract
Cancer cells have high demands for non-essential amino acids (NEAAs), which are precursors for anabolic and antioxidant pathways that support cell survival and proliferation. It is well-established that cancer cells consume the NEAA cysteine, and that cysteine deprivation can induce cell death; however, the specific factors governing acute sensitivity to cysteine starvation are poorly characterized. Here, we show that that neither expression of enzymes for cysteine synthesis nor availability of the primary precursor methionine correlated with acute sensitivity to cysteine starvation. We observed a strong correlation between efflux of the methionine-derived metabolite methylthioadenosine (MTA) and sensitivity to cysteine starvation. MTA efflux results from genetic deletion of methylthioadenosine phosphorylase (MTAP), which is frequently deleted in cancers. We show that MTAP loss upregulates polyamine metabolism which, concurrently with cysteine withdrawal, promotes elevated reactive oxygen species and prevents cell survival. Our results reveal an unexplored metabolic weakness at the intersection of polyamine and cysteine metabolism.
Collapse
Affiliation(s)
- Tong Zhang
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, UK
- Novartis Institutes for BioMedical Research, Shanghai, China
| | - Christin Bauer
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, UK
- AstraZeneca R&D, Cambridge, UK
| | - Alice C Newman
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, UK
| | - Alejandro Huerta Uribe
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, UK
| | | | - Karen Blyth
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, UK
- Cancer Research UK Beatson Institute, Glasgow, UK
| | - Oliver D K Maddocks
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, UK.
| |
Collapse
|
39
|
Abstract
Epithelial ovarian cancer (OVCA) is the most lethal gynecologic cancer. Current treatment for OVCA involves surgical debulking of the tumors followed by combination chemotherapies. While most patients achieve complete remission, many OVCA will recur and develop chemo-resistance. Whereas recurrent OVCA may be treated by angiogenesis inhibitors, PARP inhibitors, or immunotherapies, the clinical outcomes of recurrence OVCA are still unsatisfactory. One new promising anti-tumor strategy is ferroptosis, a novel form of regulated cell death featured by lipid peroxidation. In this review, we have summarized several recent studies on the ferroptosis of OVCA. Also, we summarize our current understanding of various genetic determinants of ferroptosis and their underlying mechanisms in OVCA. Furthermore, ferroptosis can be combined with other standard cancer therapeutics, which has shown synergistic effects. Therefore, such a combination of therapeutics could lead to new therapeutic strategies to improve the response rate and overcome resistance. By understanding the genetic determinants and underlying mechanisms, ferroptosis may have significant therapeutic potential to improve the clinical outcome of women with OVCA.
Collapse
Affiliation(s)
- Chao-Chieh Lin
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710, USA
- Center for Genomic and Computational Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Jen-Tsan Chi
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710, USA
- Center for Genomic and Computational Biology, Duke University School of Medicine, Durham, NC 27710, USA
| |
Collapse
|
40
|
Servais A, Thomas K, Dello Strologo L, Sayer JA, Bekri S, Bertholet-Thomas A, Bultitude M, Capolongo G, Cerkauskiene R, Daudon M, Doizi S, Gillion V, Gràcia-Garcia S, Halbritter J, Heidet L, van den Heijkant M, Lemoine S, Knebelmann B, Emma F, Levtchenko E. Cystinuria: clinical practice recommendation. Kidney Int 2020; 99:48-58. [PMID: 32918941 DOI: 10.1016/j.kint.2020.06.035] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [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: 03/18/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 02/07/2023]
Abstract
Cystinuria (OMIM 220100) is an autosomal recessive hereditary disorder in which high urinary cystine excretion leads to the formation of cystine stones because of the low solubility of cystine at normal urinary pH. We developed clinical practice recommendation for diagnosis, surgical and medical treatment, and follow-up of patients with cystinuria. Elaboration of these clinical practice recommendations spanned from June 2018 to December 2019 with a consensus conference in January 2019. Selected topic areas were chosen by the co-chairs of the conference. Working groups focusing on specific topics were formed. Group members performed systematic literature review using MEDLINE, drafted the statements, and discussed them. They included geneticists, medical biochemists, pediatric and adult nephrologists, pediatric and adult urologists experts in cystinuria, and the Metabolic Nephropathy Joint Working Group of the European Reference Network for Rare Kidney Diseases (ERKNet) and eUROGEN members. Overall 20 statements were produced to provide guidance on diagnosis, genetic analysis, imaging techniques, surgical treatment (indication and modalities), conservative treatment (hydration, dietetic, alkalinization, and cystine-binding drugs), follow-up, self-monitoring, complications (renal failure and hypertension), and impact on quality of life. Because of the rarity of the disease and the poor level of evidence in the literature, these statements could not be graded. This clinical practice recommendation provides guidance on all aspects of the management of both adults and children with cystinuria, including diagnosis, surgery, and medical treatment.
Collapse
Affiliation(s)
- Aude Servais
- Nephrology and Transplantation Department, Centre de Référence des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte, Necker Hospital, APHP, Université de Paris, Paris, France.
| | - Kay Thomas
- Stone Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Luca Dello Strologo
- Renal Transplant Clinic, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - John A Sayer
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Central Parkway, Newcastle upon Tyne, UK; The Newcastle upon Tyne NHS Hospitals Foundation Trust, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne, UK
| | - Soumeya Bekri
- Department of Metabolic Biochemistry, Rouen University Hospital, Rouen, France
| | - Aurelia Bertholet-Thomas
- Centre de Référence des Maladies Rénales Rares, Filière ORKID, Service de Néphrologie, Rhumatologie et Dermatologie Pédiatriques, Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, Université Claude-Bernard Lyon 1, Lyon, France
| | | | - Giovanna Capolongo
- Unit of Nephrology, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli," Naples, Italy
| | | | - Michel Daudon
- UMR S 1155 and Physiology Unit, AP-HP, Hôpital Tenon, Sorbonne Université and INSERM, Paris, France
| | - Steeve Doizi
- Sorbonne Université, GRC n°20, Groupe de Recherche Clinique sur la Lithiase Urinaire, Service d'Urologie, Hôpital Tenon, AP-HP, Paris, France
| | - Valentine Gillion
- Département de Néphrologie adulte, Cliniques universitaires Saint Luc, Bruxelles, Belgium
| | - Silvia Gràcia-Garcia
- Laboratory of Renal Lithiasis, Clinical Laboratories, Fundació Puigvert, Barcelona, Spain
| | - Jan Halbritter
- Division of Nephrology, Department of Endocrinology, Nephrology, and Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Laurence Heidet
- Néphrologie Pédiatrique, Centre de Référence MARHEA, Hôpital universitaire Necker-Enfants Malades, Paris, France
| | - Marleen van den Heijkant
- Pediatric Renal Center, University Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sandrine Lemoine
- Nephrology and Renal Function Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France; University of Lyon, Lyon, France
| | - Bertrand Knebelmann
- Nephrology and Transplantation Department, Centre de Référence des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte, Necker Hospital, APHP, Université de Paris, Paris, France
| | - Francesco Emma
- Division of Nephrology, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Elena Levtchenko
- Division of Pediatric Nephrology, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, Katholieke Universiteit Leuven, Leuven, Belgium
| | | |
Collapse
|
41
|
Ortiz-Rodriguez JM, Martín-Cano FE, Ortega-Ferrusola C, Masot J, Redondo E, Gázquez A, Gil MC, Aparicio IM, Rojo-Domínguez P, Tapia JA, Rodriguez-Martínez H, Peña FJ. The incorporation of cystine by the soluble carrier family 7 member 11 (SLC7A11) is a component of the redox regulatory mechanism in stallion spermatozoa†. Biol Reprod 2020; 101:208-222. [PMID: 30998234 DOI: 10.1093/biolre/ioz069] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 10/22/2018] [Revised: 02/20/2019] [Accepted: 04/17/2019] [Indexed: 01/17/2023] Open
Abstract
Oxidative stress is considered a major mechanism causing sperm damage during cryopreservation and storage, and underlies male factor infertility. Currently, oxidative stress is no longer believed to be caused only by the overproduction of reactive oxygen species, but rather by the deregulation of redox signaling and control mechanisms. With this concept in mind, here, we describe for the first time the presence of the soluble carrier family 7 member 11 (SLC7A11) antiporter, which exchanges extracellular cystine (Cyss) for intracellular glutamate, in stallion spermatozoa, as well as its impact on sperm function using the specific inhibitor sulfasalazine. Spermatozoa incubated with Cyss exhibited an increased intracellular GSH content compared with controls (P < 0.01): 50% in fresh extended stallion spermatozoa and 30% in frozen-thawed spermatozoa. This effect was prevented by the addition of sulfasalazine to the media. Cystine supplementation also reduced the oxidation-reduction potential of spermatozoa, with sulfasalazine only preventing this effect on fresh spermatozoa that were incubated for 3 h at 37°C, but not in frozen-thawed spermatozoa. While sulfasalazine reduced the motility of frozen-thawed spermatozoa, it increased motility in fresh samples. The present findings provide new and relevant data on the mechanism regulating the redox status of spermatozoa and suggest that a different redox regulatory mechanism exists in cryopreserved spermatozoa, thus providing new clues to improve current cryopreservation technologies and treat male factor infertility.
Collapse
Affiliation(s)
- José Manuel Ortiz-Rodriguez
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Francisco E Martín-Cano
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Cristina Ortega-Ferrusola
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Javier Masot
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Eloy Redondo
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Antonio Gázquez
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - María C Gil
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Inés M Aparicio
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Patricia Rojo-Domínguez
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - José A Tapia
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - Heriberto Rodriguez-Martínez
- Department of Clinical and Experimental Medicine, Faculty of Medicine & Health Sciences, Linköping University, Linköping, Sweden
| | - Fernando J Peña
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| |
Collapse
|
42
|
Sato J, Merenda MEZ, Uemoto AT, Dos Santos MP, Barion MRL, Carciofi AC, de Paula Dorigam JC, Ribeiro LB, Vasconcellos RS. Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens. Arch Anim Nutr 2020; 74:414-427. [PMID: 32840134 DOI: 10.1080/1745039x.2020.1797433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The objective of this study was to estimate the sulphur amino acid (methionine + cystine) requirements and nitrogen endogenous losses in kittens aged 150 to 240 d. Thirty-six cats were distributed in six treatments (six cats per treatment) consisting of different concentrations of methionine + cystine (M + C): T1, 6.5 g/kg; T2, 8.8 g/kg; T3, 11.3 g/kg; T4, 13.6 g/kg; T5, 16.0 g/kg; and control, 6.5 g/kg. Diets were formulated by serial dilution of T5 (a diet relatively deficient in M + C but containing high protein concentrations) with a minimal nitrogen diet (MND). Thus, crude protein and amino acid concentrations in diets T1-T5 decreased by the same factor. The control diet was the T1 diet supplemented with adequate concentrations of M + C (6.5 g/kg; 8.8 g/kg; 11.3 g/kg; 13.6 g/kg and 16.0 g/kg). All diets were based on ingredients commonly used in extruded cat diets. Digestibility assays were performed for the determination of nitrogen balance. Nitrogen intake (NI) and nitrogen excretion (NEX) results data were fitted with an exponential equation to estimate nitrogen maintenance requirement (NMR), theoretical maximum for daily nitrogen retention (NRmaxT), and protein quality (b). M + C requirements were calculated from the limiting amino acid intake (LAAI) equation assuming a nitrogen retention of 45 to 65% NRmaxT. The NMR of kittens aged 150, 195, and 240 d was estimated at 595, 559, and 455 mg/kg body weight (BW)0.67 per day, respectively, and M + C requirements were estimated at 517, 664, and 301 mg/kg BW0.67 per day, respectively.
Collapse
Affiliation(s)
- Joyce Sato
- Department of Animal Science, State University of Maringá , Maringá, Brazil
| | | | | | | | | | - Aulus Cavalieri Carciofi
- Department of Clinical and Veterinary Surgery, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP) , Jaboticabal, Brazil
| | - Juliano César de Paula Dorigam
- Department of Clinical and Veterinary Surgery, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP) , Jaboticabal, Brazil
| | | | | |
Collapse
|
43
|
Mthembu SN, Sharma A, Albericio F, de la Torre BG. Breaking a Couple: Disulfide Reducing Agents. Chembiochem 2020; 21:1947-1954. [PMID: 32196882 DOI: 10.1002/cbic.202000092] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [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: 02/16/2020] [Revised: 03/19/2020] [Indexed: 01/20/2023]
Abstract
Cysteine is present in a large number of natural and synthetic (bio)molecules. Although the thiol side chain of Cys can be in a free form, in most cases it forms a disulfide bond either with a second Cys (bridge) or with another thiol, as in the case of protecting groups. Efficient reduction of these disulfide bridges is a requirement for many applications of Cys-containing molecules in the fields of chemistry and biochemistry. Here we review reducing methods for disulfide bonds, taking into consideration the solubility of the substrates when selecting the appropriate reducing reagent.
Collapse
Affiliation(s)
- Sinenhlanhla N Mthembu
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, 4001, South Africa.,KRISP, School of Laboratory of Medicine and Medical Sciences College of Health Sciences, University of KwaZulu-Natal Westville, Durban, 4001, South Africa
| | - Anamika Sharma
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, 4001, South Africa.,KRISP, School of Laboratory of Medicine and Medical Sciences College of Health Sciences, University of KwaZulu-Natal Westville, Durban, 4001, South Africa
| | - Fernando Albericio
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, 4001, South Africa.,Department of Organic Chemistry, University of Barcelona, Martí i Franqués 1-11, Barcelona, 08028, Spain.,CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine IQAC, CSIC, Jordi Girona, Barcelona, 08028, Spain
| | - Beatriz G de la Torre
- KRISP, School of Laboratory of Medicine and Medical Sciences College of Health Sciences, University of KwaZulu-Natal Westville, Durban, 4001, South Africa
| |
Collapse
|
44
|
Wiedemann C, Kumar A, Lang A, Ohlenschläger O. Cysteines and Disulfide Bonds as Structure-Forming Units: Insights From Different Domains of Life and the Potential for Characterization by NMR. Front Chem 2020; 8:280. [PMID: 32391319 PMCID: PMC7191308 DOI: 10.3389/fchem.2020.00280] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [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: 11/04/2019] [Accepted: 03/23/2020] [Indexed: 12/22/2022] Open
Abstract
Disulfide bridges establish a fundamental element in the molecular architecture of proteins and peptides which are involved e.g., in basic biological processes or acting as toxins. NMR spectroscopy is one method to characterize the structure of bioactive compounds including cystine-containing molecules. Although the disulfide bridge itself is invisible in NMR, constraints obtained via the neighboring NMR-active nuclei allow to define the underlying conformation and thereby to resolve their functional background. In this mini-review we present shortly the impact of cysteine and disulfide bonds in the proteasome from different domains of life and give a condensed overview of recent NMR applications for the characterization of disulfide-bond containing biomolecules including advantages and limitations of the different approaches.
Collapse
Affiliation(s)
- Christoph Wiedemann
- Institute of Biochemistry and Biotechnology, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Amit Kumar
- Leibniz Institute on Aging - Fritz Lipmann Institute, Jena, Germany
| | - Andras Lang
- Leibniz Institute on Aging - Fritz Lipmann Institute, Jena, Germany
| | | |
Collapse
|
45
|
Abstract
OBJECTIVE The prevalence and costs associated with treating pressure ulcers (PU) are at high levels. Frequently, PUs heal slowly or not at all, which may be due to the patient's catabolic state which may include protein energy malnutrition. The objective of this open label clinical trial was to improve healing rates by providing patients with a patented, high-quality protein containing all essential amino acids to ensure positive nitrogen balance. An additional benefit of this protein is the delivery of bioavailable cysteine (cystine) to promote glutathione (GSH) synthesis which supports immune function and heightens antioxidant defences. METHODS Patients with category II, III and IV PUs were fed 20g BID whey protein dietary supplement for 16-120 days, without change in ongoing 'best practice' PU management and their progress recorded. RESULTS A total of 10 patients were recruited, with an average age of 77 years. Most had shown no improvement in healing for ≥2 months before treatment and usually had other complications including chronic obstructive pulmonary disease (COPD), diabetes and various cardiovascular diseases. There were a total of 23 PUs, with some patients having more than one. Of these, 44% (n=10) showed complete resolution 83% (n=19) had better than 75% resolution over the observation period. Healing rates ranged from 16.9-0.2cm2/month (healed PUs) and 60.0-1.6cm2/month for resolving PUs. CONCLUSION By providing the necessary amino acids to rebuild tissues and bioactive cysteine (cystine) to promote synthesis of intracellular GSH and positive nitrogen balance, improvement in PUs healing was achieved.
Collapse
Affiliation(s)
- Jimmy B L Gutman
- Senior Medical Adviser, Immunotec Inc., 300 Joseph Carrier, Vaudreuil-Dorion, QC Canada
| | - Patricia A L Kongshavn
- Scientific Advisory Board Member, Immunotec Inc., 24-520 Marsett Place, Victoria, BC, Canada
| |
Collapse
|
46
|
Lensmire JM, Dodson JP, Hsueh BY, Wischer MR, Delekta PC, Shook JC, Ottosen EN, Kies PJ, Ravi J, Hammer ND. The Staphylococcus aureus Cystine Transporters TcyABC and TcyP Facilitate Nutrient Sulfur Acquisition during Infection. Infect Immun 2020; 88:e00690-19. [PMID: 31843961 DOI: 10.1128/IAI.00690-19] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 12/06/2019] [Indexed: 12/21/2022] Open
Abstract
Staphylococcus aureus is a significant human pathogen due to its capacity to cause a multitude of diseases. As such, S. aureus efficiently pillages vital nutrients from the host; however, the molecular mechanisms that support sulfur acquisition during infection have not been established. One of the most abundant extracellular sulfur-containing metabolites within the host is cysteine, which acts as the major redox buffer in the blood by transitioning between reduced and oxidized (cystine) forms. We therefore hypothesized that S. aureus acquires host-derived cysteine and cystine as sources of nutrient sulfur during systemic infection. To test this hypothesis, we used the toxic cystine analogue selenocystine to initially characterize S. aureus homologues of the Bacillus subtilis cystine transporters TcyABC and TcyP. We found that genetic inactivation of both TcyA and TcyP induced selenocystine resistance. The double mutant also failed to proliferate in medium supplemented with cystine, cysteine, or N-acetyl cysteine as the sole sulfur source. However, only TcyABC was necessary for proliferation in defined medium containing homocystine as the sulfur source. Using a murine model of systemic infection, we observed tcyP-dependent competitive defects in the liver and heart, indicating that this sulfur acquisition strategy supports proliferation of S. aureus in these organs. Phylogenetic analyses identified TcyP homologues in many pathogenic species, implying that this sulfur procurement strategy is conserved. In total, this study is the first to experimentally validate sulfur acquisition systems in S. aureus and establish their importance during pathogenesis.
Collapse
|
47
|
Grapov D, Fiehn O, Campbell C, Chandler CJ, Burnett DJ, Souza EC, Casazza GA, Keim NL, Newman JW, Hunter GR, Fernandez JR, Garvey WT, Hoppel CL, Harper ME, Adams SH. Exercise plasma metabolomics and xenometabolomics in obese, sedentary, insulin-resistant women: impact of a fitness and weight loss intervention. Am J Physiol Endocrinol Metab 2019; 317:E999-E1014. [PMID: 31526287 PMCID: PMC6962502 DOI: 10.1152/ajpendo.00091.2019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Insulin resistance has wide-ranging effects on metabolism, but there are knowledge gaps regarding the tissue origins of systemic metabolite patterns and how patterns are altered by fitness and metabolic health. To address these questions, plasma metabolite patterns were determined every 5 min during exercise (30 min, ∼45% of V̇o2peak, ∼63 W) and recovery in overnight-fasted sedentary, obese, insulin-resistant women under controlled conditions of diet and physical activity. We hypothesized that improved fitness and insulin sensitivity following a ∼14-wk training and weight loss intervention would lead to fixed workload plasma metabolomics signatures reflective of metabolic health and muscle metabolism. Pattern analysis over the first 15 min of exercise, regardless of pre- versus postintervention status, highlighted anticipated increases in fatty acid tissue uptake and oxidation (e.g., reduced long-chain fatty acids), diminution of nonoxidative fates of glucose [e.g., lowered sorbitol-pathway metabolites and glycerol-3-galactoside (possible glycerolipid synthesis metabolite)], and enhanced tissue amino acid use (e.g., drops in amino acids; modest increase in urea). A novel observation was that exercise significantly increased several xenometabolites ("non-self" molecules, from microbes or foods), including benzoic acid-salicylic acid-salicylaldehyde, hexadecanol-octadecanol-dodecanol, and chlorogenic acid. In addition, many nonannotated metabolites changed with exercise. Although exercise itself strongly impacted the global metabolome, there were surprisingly few intervention-associated differences despite marked improvements in insulin sensitivity, fitness, and adiposity. These results and previously reported plasma acylcarnitine profiles support the principle that most metabolic changes during submaximal aerobic exercise are closely tethered to absolute ATP turnover rate (workload), regardless of fitness or metabolic health status.
Collapse
Affiliation(s)
| | - Oliver Fiehn
- West Coast Metabolomics Center, Genome Center, University of California, Davis, California
| | - Caitlin Campbell
- United States Department of Agriculture-Agricultural Research Service Western Human Nutrition Research Center, Davis, California
| | - Carol J Chandler
- United States Department of Agriculture-Agricultural Research Service Western Human Nutrition Research Center, Davis, California
| | - Dustin J Burnett
- United States Department of Agriculture-Agricultural Research Service Western Human Nutrition Research Center, Davis, California
| | - Elaine C Souza
- United States Department of Agriculture-Agricultural Research Service Western Human Nutrition Research Center, Davis, California
| | - Gretchen A Casazza
- Sports Medicine Program, School of Medicine, University of California, Davis, California
| | - Nancy L Keim
- United States Department of Agriculture-Agricultural Research Service Western Human Nutrition Research Center, Davis, California
- Department of Nutrition, University of California, Davis, California
| | - John W Newman
- United States Department of Agriculture-Agricultural Research Service Western Human Nutrition Research Center, Davis, California
- Department of Nutrition, University of California, Davis, California
| | - Gary R Hunter
- Department of Nutrition Sciences, University of Alabama, Birmingham, Alabama
- Human Studies Department, University of Alabama, Birmingham, Alabama
| | - Jose R Fernandez
- Department of Nutrition Sciences, University of Alabama, Birmingham, Alabama
| | - W Timothy Garvey
- Department of Nutrition Sciences, University of Alabama, Birmingham, Alabama
| | - Charles L Hoppel
- Pharmacology Department, Case Western Reserve University, Cleveland, Ohio
| | - Mary-Ellen Harper
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Sean H Adams
- Arkansas Children's Nutrition Center, Little Rock, Arkansas
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| |
Collapse
|
48
|
Beduini A, Carosio F, Ferruti P, Ranucci E, Alongi J. Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton. Polymers (Basel) 2019; 11:E1904. [PMID: 31752336 PMCID: PMC6918177 DOI: 10.3390/polym11111904] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 10/18/2019] [Revised: 11/12/2019] [Accepted: 11/17/2019] [Indexed: 11/16/2022] Open
Abstract
The polyamidoamine derived from N,N'-methylenebisacrylamide (M) and glycine (G), M-G, has been shown to be an effective flame-retardant (FR) for cotton in horizontal flame spread tests (HFST), extinguishing the flame at 5% add-on. Its activity was attributed to its intrinsic intumescence. In vertical flame spread tests (VFST), M-G failed to extinguish the flame even at 30% add-on. Conversely, in VFST, the polyamidoamine derived from M and cystine (C), M-C, inhibited cotton combustion at 16% add-on, but in HFST failed to extinguish the flame below 12% add-on. Its activity was ascribed to the release of sulfur-containing volatiles acting as radical scavengers. In this work, the FR effectiveness of M-Gm-Cn copolymers with different G/C ratio was compared with that of the M-G and M-C homopolymers and of M-G/M-C blends of the same compositions. In HFST, both copolymers and blends extinguished the flame. In particular, M-G50-C50 and (M-G/M-C)50/50 extinguished the flame, even at 7% add-on. In VFST, the copolymers with ≥50% M-C units, similar to M-C, inhibited cotton combustion at 16% add-on. At the same add-on, the M-G/M-C blends failed to extinguish the flame. It may be concluded that, in contrast to blends, copolymers combined the merits of both homopolymers in all tests.
Collapse
Affiliation(s)
- Alessandro Beduini
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy; (A.B.); (P.F.); (E.R.)
| | - Federico Carosio
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria campus, viale T. Michel, 15121 Alessandria, Italy;
| | - Paolo Ferruti
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy; (A.B.); (P.F.); (E.R.)
| | - Elisabetta Ranucci
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy; (A.B.); (P.F.); (E.R.)
| | - Jenny Alongi
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy; (A.B.); (P.F.); (E.R.)
| |
Collapse
|
49
|
Jeffs JW, Jehanathan N, Thibert SMF, Ferdosi S, Pham L, Wilson ZT, Breburda C, Borges CR. Delta-S-Cys-Albumin: A Lab Test that Quantifies Cumulative Exposure of Archived Human Blood Plasma and Serum Samples to Thawed Conditions. Mol Cell Proteomics 2019; 18:2121-2137. [PMID: 31324658 PMCID: PMC6773563 DOI: 10.1074/mcp.tir119.001659] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 01/15/2023] Open
Abstract
Exposure of blood plasma/serum (P/S) to thawed conditions (> -30 °C) can produce biomolecular changes that skew measurements of biomarkers within archived patient samples, potentially rendering them unfit for molecular analysis. Because freeze-thaw histories are often poorly documented, objective methods for assessing molecular fitness before analysis are needed. We report a 10-μl, dilute-and-shoot, intact-protein mass spectrometric assay of albumin proteoforms called "ΔS-Cys-Albumin" that quantifies cumulative exposure of archived P/S samples to thawed conditions. The relative abundance of S-cysteinylated (oxidized) albumin in P/S increases inexorably but to a maximum value under 100% when samples are exposed to temperatures > -30 °C. The difference in the relative abundance of S-cysteinylated albumin (S-Cys-Alb) before and after an intentional incubation period that drives this proteoform to its maximum level is denoted as ΔS-Cys-Albumin. ΔS-Cys-Albumin in fully expired samples is zero. The range (mean ± 95% CI) observed for ΔS-Cys-Albumin in fresh cardiac patient P/S (n = 97) was, for plasma 12-29% (20.9 ± 0.75%) and for serum 10-24% (15.5 ± 0.64%). The multireaction rate law that governs S-Cys-Alb formation in P/S was determined and shown to predict the rate of formation of S-Cys-Alb in plasma and serum samples-a step that enables back-calculation of the time at which unknown P/S specimens have been exposed to room temperature. A blind challenge demonstrated that ΔS-Cys-Albumin can detect exposure of groups (n = 6 each) of P/S samples to 23 °C for 2 h, 4 °C for 16 h, or -20 °C for 24 h-and exposure of individual specimens for modestly increased times. An unplanned case study of nominally pristine serum samples collected under NIH-sponsorship demonstrated that empirical evidence is required to ensure accurate knowledge of archived P/S biospecimen storage history.
Collapse
Affiliation(s)
- Joshua W Jeffs
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, AZ 85287
| | - Nilojan Jehanathan
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, AZ 85287
| | - Stephanie M F Thibert
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, AZ 85287
| | - Shadi Ferdosi
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, AZ 85287
| | - Linda Pham
- Maricopa Integrated Health System, Phoenix, AZ 85008
| | - Zachary T Wilson
- Maricopa Integrated Health System, Phoenix, AZ 85008; University of Arizona College of Medicine, Phoenix, AZ 85004
| | - Christian Breburda
- Maricopa Integrated Health System, Phoenix, AZ 85008; University of Arizona College of Medicine, Phoenix, AZ 85004
| | - Chad R Borges
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, AZ 85287.
| |
Collapse
|
50
|
Tarangelo A, Magtanong L, Bieging-Rolett KT, Li Y, Ye J, Attardi LD, Dixon SJ. p53 Suppresses Metabolic Stress-Induced Ferroptosis in Cancer Cells. Cell Rep 2019; 22:569-575. [PMID: 29346757 DOI: 10.1016/j.celrep.2017.12.077] [Citation(s) in RCA: 356] [Impact Index Per Article: 71.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 11/15/2017] [Accepted: 12/21/2017] [Indexed: 02/07/2023] Open
Abstract
How cancer cells respond to nutrient deprivation remains poorly understood. In certain cancer cells, deprivation of cystine induces a non-apoptotic, iron-dependent form of cell death termed ferroptosis. Recent evidence suggests that ferroptosis sensitivity may be modulated by the stress-responsive transcription factor and canonical tumor suppressor protein p53. Using CRISPR/Cas9 genome editing, small-molecule probes, and high-resolution, time-lapse imaging, we find that stabilization of wild-type p53 delays the onset of ferroptosis in response to cystine deprivation. This delay requires the p53 transcriptional target CDKN1A (encoding p21) and is associated with both slower depletion of intracellular glutathione and a reduced accumulation of toxic lipid-reactive oxygen species (ROS). Thus, the p53-p21 axis may help cancer cells cope with metabolic stress induced by cystine deprivation by delaying the onset of non-apoptotic cell death.
Collapse
Affiliation(s)
- Amy Tarangelo
- Program in Cancer Biology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA
| | - Leslie Magtanong
- Department of Biology, Stanford University, 337 Campus Drive, Stanford, CA 94305, USA
| | - Kathryn T Bieging-Rolett
- Department of Radiation Oncology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA
| | - Yang Li
- Program in Cancer Biology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA; Department of Radiation Oncology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA
| | - Jiangbin Ye
- Program in Cancer Biology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA; Department of Radiation Oncology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA
| | - Laura D Attardi
- Program in Cancer Biology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA; Department of Radiation Oncology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA; Department of Genetics, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA
| | - Scott J Dixon
- Program in Cancer Biology, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA; Department of Biology, Stanford University, 337 Campus Drive, Stanford, CA 94305, USA.
| |
Collapse
|