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Zahurancik WJ, Norris AS, Lai SM, Snyder DT, Wysocki VH, Gopalan V. Purification, reconstitution, and mass analysis of archaeal RNase P, a multisubunit ribonucleoprotein enzyme. Methods Enzymol 2021; 659:71-103. [PMID: 34752299 DOI: 10.1016/bs.mie.2021.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The ubiquitous ribonucleoprotein (RNP) form of RNase P catalyzes the Mg2+-dependent cleavage of the 5' leader of precursor-transfer RNAs. The rate and fidelity of the single catalytic RNA subunit in the RNase P RNP is significantly enhanced by association with protein cofactors. While the bacterial RNP exhibits robust activity at near-physiological Mg2+ concentrations with a single essential protein cofactor, archaeal and eukaryotic RNase P are dependent on up to 5 and 10 protein subunits, respectively. Archaeal RNase P-whose proteins share eukaryotic homologs-is an experimentally tractable model for dissecting in a large RNP the roles of multiple proteins that aid an RNA catalyst. We describe protocols to assemble RNase P from Methanococcus maripaludis, a methanogenic archaeon. We present strategies for tag-less purification of four of the five proteins (the tag from the fifth is removed post-purification), an approach that helps reconstitute the RNase P RNP with near-native constituents. We demonstrate the value of native mass spectrometry (MS) in establishing the accurate masses (including native oligomers and modifications) of all six subunits in M. maripaludis RNase P, and the merits of mass photometry (MP) as a complement to native MS for characterizing the oligomeric state of protein complexes. We showcase the value of native MS and MP in revealing time-dependent modifications (e.g., oxidation) and aggregation of protein subunits, thereby providing insights into the decreased function of RNase P assembled with aged preparations of recombinant subunits. Our protocols and cautionary findings are applicable to studies of other cellular RNPs.
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Affiliation(s)
- Walter J Zahurancik
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States; Center for RNA Biology, The Ohio State University, Columbus, OH, United States
| | - Andrew S Norris
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States; Center for RNA Biology, The Ohio State University, Columbus, OH, United States; Resource for Native Mass Spectrometry-Guided Structural Biology, The Ohio State University, Columbus, OH, United States
| | - Stella M Lai
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States; Center for RNA Biology, The Ohio State University, Columbus, OH, United States; Resource for Native Mass Spectrometry-Guided Structural Biology, The Ohio State University, Columbus, OH, United States
| | - Dalton T Snyder
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States; Resource for Native Mass Spectrometry-Guided Structural Biology, The Ohio State University, Columbus, OH, United States
| | - Vicki H Wysocki
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States; Center for RNA Biology, The Ohio State University, Columbus, OH, United States; Resource for Native Mass Spectrometry-Guided Structural Biology, The Ohio State University, Columbus, OH, United States.
| | - Venkat Gopalan
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States; Center for RNA Biology, The Ohio State University, Columbus, OH, United States.
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Parenteral Nutrition and Oxidant Load in Neonates. Nutrients 2021; 13:nu13082631. [PMID: 34444799 PMCID: PMC8401055 DOI: 10.3390/nu13082631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/19/2021] [Accepted: 07/27/2021] [Indexed: 01/05/2023] Open
Abstract
Neonates with preterm, gastrointestinal dysfunction and very low birth weights are often intolerant to oral feeding. In such infants, the provision of nutrients via parenteral nutrition (PN) becomes necessary for short-term survival, as well as long-term health. However, the elemental nutrients in PN can be a major source of oxidants due to interactions between nutrients, imbalances of anti- and pro-oxidants, and environmental conditions. Moreover, neonates fed PN are at greater risk of oxidative stress, not only from dietary sources, but also because of immature antioxidant defences. Various interventions can lower the oxidant load in PN, including the supplementation of PN with antioxidant vitamins, glutathione, additional arginine and additional cysteine; reduced levels of pro-oxidant nutrients such as iron; protection from light and oxygen; and proper storage temperature. This narrative review of published data provides insight to oxidant molecules generated in PN, nutrient sources of oxidants, and measures to minimize oxidant levels.
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Oh HY, Jalde SS, Chung IY, Yoo YJ, Jang HJ, Choi HK, Cho YH. An antipathogenic compound that targets the OxyR peroxide sensor in Pseudomonas aeruginosa. J Med Microbiol 2021; 70. [PMID: 33830911 PMCID: PMC8289212 DOI: 10.1099/jmm.0.001341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction Antipathogenic or antivirulence strategy is to target a virulence pathway that is dispensable for growth, in the hope to mitigate the selection for drug resistance. Hypothesis/Gap Statment Peroxide stress responses are one of the conserved virulence pathways in bacterial pathogens and thus good targets for antipathogenic strategy. Aim This study aims to identify a new chemical compound that targets OxyR, the peroxide sensor required for the full virulence of the opportunistic human pathogen, Pseudomonas aeruginosa. Methodology Computer-based virtual screening under consideration of the ‘eNTRy’ rules and molecular docking were conducted on the reduced form of the OxyR regulatory domain (RD). Selected hits were validated by their ability to phenocopy the oxyR null mutant and modulate the redox cycle of OxyR. Results We first isolated three robust chemical hits that inhibit OxyR without affecting prototrophic growth or viability. One (compound 1) of those affected the redox cycle of OxyR in response to H2O2 treatment, in a way to impair its function. Compound 1 displayed selective antibacterial efficacy against P. aeruginosa in Drosophila infection model, without antibacterial activity against Staphylococcus aureus. Conclusion These results suggest that compound 1 could be an antipathogenic hit inhibiting the P. aeruginosa OxyR. More importantly, our study provides an insight into the computer-based discovery of new-paradigm selective antibacterials to treat Gram-negative bacterial infections presumably with few concerns of drug resistance.
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Affiliation(s)
- Hyo-Young Oh
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Shivakumar S Jalde
- Department of Medicinal Chemistry, Jungwon University, Goesan 28024, Republic of Korea
| | - In-Young Chung
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Yeon-Ji Yoo
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Hye-Jeong Jang
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Hyun-Kyung Choi
- Department of Medicinal Chemistry, Jungwon University, Goesan 28024, Republic of Korea
| | - You-Hee Cho
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do 13488, Republic of Korea
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Coagulation factor IX analysis in bioreactor cell culture supernatant predicts quality of the purified product. Commun Biol 2021; 4:390. [PMID: 33758337 PMCID: PMC7988164 DOI: 10.1038/s42003-021-01903-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 02/18/2021] [Indexed: 02/07/2023] Open
Abstract
Coagulation factor IX (FIX) is a complex post-translationally modified human serum glycoprotein and high-value biopharmaceutical. The quality of recombinant FIX (rFIX), especially complete γ-carboxylation, is critical for rFIX clinical efficacy. Bioreactor operating conditions can impact rFIX production and post-translational modifications (PTMs). With the goal of optimizing rFIX production, we developed a suite of Data Independent Acquisition Mass Spectrometry (DIA-MS) proteomics methods and used these to investigate rFIX yield, γ-carboxylation, other PTMs, and host cell proteins during bioreactor culture and after purification. We detail the dynamics of site-specific PTM occupancy and structure on rFIX during production, which correlated with the efficiency of purification and the quality of the purified product. We identified new PTMs in rFIX near the GLA domain which could impact rFIX GLA-dependent purification and function. Our workflows are applicable to other biologics and expression systems, and should aid in the optimization and quality control of upstream and downstream bioprocesses.
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Kolonko M, Bystranowska D, Taube M, Kozak M, Bostock M, Popowicz G, Ożyhar A, Greb-Markiewicz B. The intrinsically disordered region of GCE protein adopts a more fixed structure by interacting with the LBD of the nuclear receptor FTZ-F1. Cell Commun Signal 2020; 18:180. [PMID: 33153474 PMCID: PMC7643343 DOI: 10.1186/s12964-020-00662-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 09/10/2020] [Indexed: 12/15/2022] Open
Abstract
The Drosophila melanogaster Germ cell-expressed protein (GCE) is a paralog of the juvenile hormone (JH) receptor - Methoprene tolerant protein (MET). Both proteins mediate JH function, preventing precocious differentiation during D. melanogaster development. Despite that GCE and MET are often referred to as equivalent JH receptors, their functions are not fully redundant and show tissue specificity. Both proteins belong to the family of bHLH-PAS transcription factors. The similarity of their primary structure is limited to defined bHLH and PAS domains, while their long C-terminal fragments (GCEC, METC) show significant differences and are expected to determine differences in GCE and MET protein activities. In this paper we present the structural characterization of GCEC as a coil-like intrinsically disordered protein (IDP) with highly elongated and asymmetric conformation. In comparison to previously characterized METC, GCEC is less compacted, contains more molecular recognition elements (MoREs) and exhibits a higher propensity for induced folding. The NMR shifts perturbation experiment and pull-down assay clearly demonstrated that the GCEC fragment is sufficient to form an interaction interface with the ligand binding domain (LBD) of the nuclear receptor Fushi Tarazu factor-1 (FTZ-F1). Significantly, these interactions can force GCEC to adopt more fixed structure that can modulate the activity, structure and functions of the full-length receptor. The discussed relation of protein functionality with the structural data of inherently disordered GCEC fragment is a novel look at this protein and contributes to a better understanding of the molecular basis of the functions of the C-terminal fragments of the bHLH-PAS family. Video abstract.
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Affiliation(s)
- Marta Kolonko
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry,
- Wroclaw University of Science and Technology
- , Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland.
| | - Dominika Bystranowska
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry,
- Wroclaw University of Science and Technology
- , Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Michał Taube
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznanskiego 2, 61-614, Poznan, Poland
| | - Maciej Kozak
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznanskiego 2, 61-614, Poznan, Poland.,National Synchrotron Radiation Centre SOLARIS, Jagiellonian University, Czerwone Maki 98, 30-392, Krakow, Poland
| | - Mark Bostock
- Biomolecular NMR and Center for Integrated Protein Science Munich at Department Chemie, Technical University of Munich, Lichtenbergstraße 4, 85748, Garching, Germany.,Institute of Structural Biology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Oberschleißheim, Germany
| | - Grzegorz Popowicz
- Biomolecular NMR and Center for Integrated Protein Science Munich at Department Chemie, Technical University of Munich, Lichtenbergstraße 4, 85748, Garching, Germany.,Institute of Structural Biology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Oberschleißheim, Germany
| | - Andrzej Ożyhar
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry,
- Wroclaw University of Science and Technology
- , Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Beata Greb-Markiewicz
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry,
- Wroclaw University of Science and Technology
- , Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland.
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6
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Salih KJ, Duncan O, Li L, O'Leary B, Fenske R, Trösch J, Millar AH. Impact of oxidative stress on the function, abundance, and turnover of the Arabidopsis 80S cytosolic ribosome. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:128-139. [PMID: 32027433 DOI: 10.1111/tpj.14713] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 01/05/2020] [Accepted: 01/23/2020] [Indexed: 05/22/2023]
Abstract
Abiotic stress in plants causes accumulation of reactive oxygen species (ROS) leading to the need for new protein synthesis to defend against ROS and to replace existing proteins that are damaged by oxidation. Functional plant ribosomes are critical for these activities, however we know little about the impact of oxidative stress on plant ribosome abundance, turnover, and function. Using Arabidopsis cell culture as a model system, we induced oxidative stress using 1 µm of H2 O2 or 5 µm menadione to more than halve cell growth rate and limit total protein content. We show that ribosome content on a total cell protein basis decreased in oxidatively stressed cells. However, overall protein synthesis rates on a ribosome abundance basis showed the resident ribosomes retained their function in oxidatively stressed cells. 15 N progressive labelling was used to calculate the rate of ribosome synthesis and degradation to track the fate of 62 r-proteins. The degradation rates and the synthesis rates of most r-proteins slowed following oxidative stress leading to an ageing population of ribosomes in stressed cells. However, there were exceptions to this trend; r-protein RPS14C doubled its degradation rate in both oxidative treatments. Overall, we show that ribosome abundance decreases and their age increases with oxidative stress in line with loss of cell growth rate and total cellular protein amount, but ribosome function of the ageing ribosomes appeared to be maintained concomittently with differences in the turnover rate and abundance of specific ribosomal proteins. Data are available via ProteomeXchange with identifier PXD012840.
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Affiliation(s)
- Karzan J Salih
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
- Pharmaceutical Chemistry Department, Medical and Applied Science College, Charmo University, 46023, Chamchamal-Sulaimani, Kurdistan Region, Iraq
| | - Owen Duncan
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Lei Li
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
- College of Life Sciences, Nankai University, 300071, Tianjin, China
| | - Brendan O'Leary
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Ricarda Fenske
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Josua Trösch
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - A Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
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Vimer S, Ben-Nissan G, Sharon M. Direct characterization of overproduced proteins by native mass spectrometry. Nat Protoc 2020; 15:236-265. [PMID: 31942081 DOI: 10.1038/s41596-019-0233-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 08/27/2019] [Indexed: 02/06/2023]
Abstract
Proteins derived by recombinant technologies must be characterized to ensure quality, consistency and optimal production. These properties are usually assayed following purification procedures that are time consuming and labor intensive. Here, we describe a native mass spectrometry (MS) approach, direct-MS, for rapid characterization of intact overexpressed proteins immediately from crude samples. In this protocol, we discuss the multiple applications of the method and outline the necessary steps required for sample preparation, data collection and interpretation of results. We begin with the sample preparation workflows, which are relevant for recombinant proteins produced within bacteria, those analyzed straight from crude cell lysate, and secreted proteins generated in eukaryotic expression systems that are assessed directly from the growth culture medium. We continue with the mass acquisition steps that enable immediate definition of properties such as expressibility, solubility, assembly state, folding, overall structure, stability, post-translational modifications and associations with biomolecules. We demonstrate the applicability of the method by presenting the characterization of a computationally designed toxin-antitoxin heterodimer, activity and protein-interaction determination of a regulatory protein and detailed glycosylation analysis of a designed intact antibody. Overall, we describe a simple and rapid protocol that is relevant to both prokaryotic and eukaryotic expression systems and can be carried out on multiple mass spectrometers, such as Orbitrap and quadrupole time-of-flight (QTOF)-based mass spectroscopy platforms, that enable intact protein detection. The procedure takes from 30 min to several hours, from sample collection to data acquisition, depending on the depth of MS analysis.
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Affiliation(s)
- Shay Vimer
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Gili Ben-Nissan
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Sharon
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel.
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8
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Du J, Wei Y, Zhao Y, Xu F, Wang Y, Zheng W, Luo Q, Wang M, Wang F. A Photoactive Platinum(IV) Anticancer Complex Inhibits Thioredoxin-Thioredoxin Reductase System Activity by Induced Oxidization of the Protein. Inorg Chem 2018; 57:5575-5584. [PMID: 29688719 DOI: 10.1021/acs.inorgchem.8b00529] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thioredoxin (Trx) is an important enzyme in the redox signaling pathway and is usually overexpressed in tumor cells. We demonstrate herein that the photoactive platinum(IV) anticancer complex trans,trans,trans-[Pt(N3)2(OH)2(Py)2] (1) can bind to His, Glu, and Gln residues of Trx upon the irradiation of blue light. More importantly, complex 1 can also induce the oxidation of Met, Trp, and the Cys catalytic sites to form disulfide bonds by generating reactive oxygen species (ROS) upon photoactivation. These eventually lead to inhibition of activity of Trx enzyme and the Trx system and further increase in the cellular ROS level. We speculate that the oxidative damage not only inhibits Trx activity but also greatly contributes to the anticancer action of complex 1.
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Affiliation(s)
- Jun Du
- College of Chemistry and Materials Science, Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials , Anhui Normal University , Wuhu 241000 , People's Republic of China
| | - Yuanyuan Wei
- College of Chemistry and Materials Science, Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials , Anhui Normal University , Wuhu 241000 , People's Republic of China.,Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China
| | - Yao Zhao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China
| | - Fengmin Xu
- College of Chemistry and Materials Science, Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials , Anhui Normal University , Wuhu 241000 , People's Republic of China.,Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China
| | - Yuanyuan Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Wei Zheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China
| | - Qun Luo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Ming Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Fuyi Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing , 100190 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
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9
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Trnková L, Dršata J, Boušová I. Oxidation as an important factor of protein damage: Implications for Maillard reaction. J Biosci 2015; 40:419-39. [DOI: 10.1007/s12038-015-9523-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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10
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Yuan K, Liu Y, Chen HN, Zhang L, Lan J, Gao W, Dou Q, Nice EC, Huang C. Thiol-based redox proteomics in cancer research. Proteomics 2014; 15:287-99. [PMID: 25251260 DOI: 10.1002/pmic.201400164] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 08/15/2014] [Accepted: 09/18/2014] [Indexed: 02/05/2023]
Abstract
Cancer cells maintain their intracellular ROS concentrations at required levels for their survival. Changes in ROS concentrations can regulate biochemical signaling mechanisms that control cell function. It has been demonstrated that ROS regulate the cellular events through redox regulation of redox-sensitive proteins (redox sensors). Upon oxidative stress, redox sensors undergo redox modifications that cause the allosteric changes of these proteins and endow them with different functions. Understanding the altered functions of redox sensors and the underlying mechanisms is critical for the development of novel cancer therapeutics. Recently, a series of high-throughput proteomics approaches have been developed for screening redox processes. In this manuscript, we review these methodologies and discuss the important redox sensors recently identified that are related to cancer.
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Affiliation(s)
- Kefei Yuan
- The State Key Laboratory for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
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