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Lin Y, Yang M, Huang L, Yang F, Fan J, Qiang Y, Chang Y, Zhou W, Yan L, Xiong J, Ping J, Chen S, Men D, Li F. A bacteria-derived tetramerized protein ameliorates nonalcoholic steatohepatitis in mice via binding and relocating acetyl-coA carboxylase. Cell Rep 2023; 42:113453. [PMID: 37976162 DOI: 10.1016/j.celrep.2023.113453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/30/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023] Open
Abstract
Increased de novo lipogenesis (DNL) is a major feature of nonalcoholic steatohepatitis (NASH). None of the drugs targeting the catalytic activity of acetyl-CoA carboxylase (ACC), the rate-limiting enzyme in the DNL process, have been approved by the FDA. Whether cytosolic ACC1 can be regulated spatially remains to be explored. Herein, we find that streptavidin (SA), which is a bacterium-derived tetrameric protein, forms cytosolic condensates and efficiently induces a spatial re-localization of ACC1 in liver cells, concomitant with inhibited lipid accumulation. Both SA tetrameric structure and multivalent protein interaction are required for condensate formation. Interestingly, the condensates are further characterized as gel-like membraneless organelle (SAGMO) and significantly restrict the cytosolic dispersion of ACC1 and fatty acid synthase. Notably, AAV-mediated delivery of SA partially blocks mouse liver DNL and ameliorates NASH without eliciting hypertriglyceridemia. In summary, our study shows that insulating lipogenesis-related proteins by SAGMO might be effective for NASH treatment.
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Affiliation(s)
- Yan Lin
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Mingkun Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Li Huang
- Research Center for Medicine and Structural Biology, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Fan Yang
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Jiachen Fan
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Yulong Qiang
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Yuting Chang
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Wenjie Zhou
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Leilei Yan
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Jie Xiong
- Department of Immunology, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Jie Ping
- Department of Pharmacology, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China
| | - Shizhen Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Dong Men
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou 510005, Guangdong Province, China.
| | - Feng Li
- Department of Medical Genetics, TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Allergy and Immunology, Wuhan 430071, China.
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Gajera G, Henriksen N, Cox B, Kothari V. Identification of anti-pathogenic activity among in silico predicted small-molecule inhibitors of Pseudomonas aeruginosa LasR or nitric oxide reductase (NOR). Drug Target Insights 2023; 17:101-109. [PMID: 37811195 PMCID: PMC10551673 DOI: 10.33393/dti.2023.2638] [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] [Received: 07/20/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Introduction Antibiotic-resistant Pseudomonas aeruginosa strains cause considerable morbidity and mortality globally. Identification of novel targets in this notorious pathogen is urgently warranted to facilitate discovery of new anti-pathogenic agents against it. This study attempted to identify small-molecule inhibitors of two important proteins LasR and nitric oxide reductase (NOR) in P. aeruginosa. 'Las' system can be said to be the 'master' regulator of quorum sensing in P. aeruginosa, whose receptor protein is LasR. Similarly, NOR is crucial to detoxification of reactive nitrogen species. Methods In silico identification of potential LasR or NOR inhibitors was attempted through a virtual screening platform AtomNet® to obtain a final subset of <100 top scoring compounds. These compounds were evaluated for their in vivo anti-pathogenic activity by challenging the model host Caenorhabditis elegans with P. aeruginosa in the presence or absence of test compounds. Survival of the worm population in 24-well assay plates was monitored over a period of 5 days microscopically. Results Of the 96 predicted LasR inhibitors, 11 exhibited anti-Pseudomonas activity (23%-96% inhibition of bacterial virulence as per third-day end-point) at 25-50 µg/mL. Of the 85 predicted NOR inhibitors, 8 exhibited anti-Pseudomonas activity (40%-85% inhibition of bacterial virulence as per second-day end-point) at 25-50 µg/mL. Conclusion Further investigation on molecular mode of action of compounds found active in this study is warranted. Virtual screening can be said to be a useful tool in narrowing down the list of compounds requiring actual wet-lab screening, saving considerable time and efforts for drug discovery.
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Affiliation(s)
- Gemini Gajera
- Institute of Science, Nirma University, Ahmedabad - India
| | | | - Bryan Cox
- Atomwise Inc, San Francisco, CA - USA
| | - Vijay Kothari
- Institute of Science, Nirma University, Ahmedabad - India
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Deka RK, Deka A, Liu WZ, Norgard MV, Brautigam CA. Inhibition of bacterial FMN transferase: A potential avenue for countering antimicrobial resistance. Protein Sci 2022; 31:545-551. [PMID: 34796555 PMCID: PMC8819833 DOI: 10.1002/pro.4241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/01/2021] [Accepted: 11/15/2021] [Indexed: 02/03/2023]
Abstract
Antibiotic resistance is a challenge for the control of bacterial infections. In an effort to explore unconventional avenues for antibacterial drug development, we focused on the FMN-transferase activity of the enzyme Ftp from the syphilis spirochete, Treponema pallidum (Ftp_Tp). This enzyme, which is only found in prokaryotes and trypanosomatids, post-translationally modifies proteins in the periplasm, covalently linking FMN (from FAD) to proteins that typically are important for establishing an essential electrochemical gradient across the cytoplasmic membrane. As such, Ftp inhibitors potentially represent a new class of antimicrobials. Previously, we showed that AMP is both a product of the Ftp_tp-catalyzed reaction and an inhibitor of the enzyme. As a preliminary step in exploiting this property to develop a novel Ftp_Tp inhibitor, we have used structural and solution studies to examine the inhibitory and enzyme-binding properties of several adenine-based nucleosides, with particular focus on the 2-position of the purine ring. Implications for future drug design are discussed.
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Affiliation(s)
- Ranjit K. Deka
- Department of MicrobiologyUT Southwestern Medical CenterDallasTexasUSA
| | | | - Wei Z. Liu
- Department of MicrobiologyUT Southwestern Medical CenterDallasTexasUSA
| | | | - Chad A. Brautigam
- Department of MicrobiologyUT Southwestern Medical CenterDallasTexasUSA,Department of BiophysicsUT Southwestern Medical CenterDallasTexasUSA
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Terrazas-López M, Lobo-Galo N, Aguirre-Reyes LG, Bustos-Jaimes I, Marcos-Víquez JÁ, González-Segura L, Díaz-Sánchez ÁG. Interaction of N-succinyl diaminopimelate desuccinylase with orphenadrine and disulfiram. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128928] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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GUPTA S, UNDALE VR, LAKHADIVE K. Novel Targets for Antimicrobials. Turk J Pharm Sci 2020; 17:565-575. [PMID: 33177939 PMCID: PMC7650728 DOI: 10.4274/tjps.galenos.2020.90197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 04/21/2020] [Indexed: 12/01/2022]
Abstract
Antimicrobial resistance (AMR) is the phenomenon developed by microorganism on exposure to antimicrobial agents, making them unresponsive. Development of microbial confrontation is a severe rising risk to global community well-being as treatment in addition, management of such resistant microbial infections is difficult and challenging. The situation requires action across all government sectors and society. The change in the molecular target on which antimicrobial drugs act is one of the key mechanisms behind AMR. One of the approaches to battle with AMR can be exploring newer molecular targets in microbes and discovering new molecules accordingly. There are various examples of novel targets such as biomolecules involving in biosynthesis of cell wall, biosynthesis of aromatic amino acid, cell disunion, biosynthesis of fatty acid, and isoprenoid biosynthesis and tRNA synthetases. Fatty acid biosynthesis (FAB) and their enzymes among all the above is the more appealing target for the advancement of new antimicrobial agents. Number of promising inhibitors have been developed for bacterial fatty acid synthesis (FAS) and also few of them are clinically used. Some of these potential inhibitors are found to be used in development of new antibacterial as a lead compound and have been discovered from high throughput screening processes like Platencimycin and their analogue, Platencin. The review majorly encompasses bacterial FAB in type II FAS system and potential inhibitors with respective targets of novel antibacterial.
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Affiliation(s)
- Suchita GUPTA
- Dr. D.Y. Patil Institute of Pharmaceutical Sciences and Research, Pimpri, Pune, Maharashtra
| | | | - Kedar LAKHADIVE
- Dr. D.Y. Patil Institute of Pharmaceutical Sciences and Research, Pimpri, Pune, Maharashtra
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Dadgostar P. Antimicrobial Resistance: Implications and Costs. Infect Drug Resist 2019; 12:3903-3910. [PMID: 31908502 PMCID: PMC6929930 DOI: 10.2147/idr.s234610] [Citation(s) in RCA: 747] [Impact Index Per Article: 149.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/29/2019] [Indexed: 12/24/2022] Open
Abstract
Antimicrobial resistance (AMR) has developed as one of the major urgent threats to public health causing serious issues to successful prevention and treatment of persistent diseases. In spite of different actions taken in recent decades to tackle this issue, the trends of global AMR demonstrate no signs of slowing down. Misusing and overusing different antibacterial agents in the health care setting as well as in the agricultural industry are considered the major reasons behind the emergence of antimicrobial resistance. In addition, the spontaneous evolution, mutation of bacteria, and passing the resistant genes through horizontal gene transfer are significant contributors to antimicrobial resistance. Many studies have demonstrated the disastrous financial consequences of AMR including extremely high healthcare costs due to an increase in hospital admissions and drug usage. The literature review, which included articles published after the year 2012, was performed using Scopus, PubMed and Google Scholar with the utilization of keyword searches. Results indicated that the multifactorial threat of antimicrobial resistance has resulted in different complex issues affecting countries across the globe. These impacts found in the sources are categorized into three different levels: patient, healthcare, and economic. Although gaps in knowledge about AMR and areas for improvement are obvious, there is not any clearly understood progress to put an end to the persistent trends of antimicrobial resistance.
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Affiliation(s)
- Porooshat Dadgostar
- Milken Institute of Public Health, George Washington University, Washington, DC, USA
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Emerging Antibiotic Resistance in Mycoplasma Microorganisms, Designing Effective and Novel Drugs / Therapeutic Targets: Current Knowledge and Futuristic Prospects. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2019. [DOI: 10.22207/jpam.13.1.03] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Lueangsakulthai J, Jangpromma N, Temsiripong T, McKendrick J, Khunkitti W, Maddocks S, Klaynongsruang S. A novel antibacterial peptide derived fromCrocodylus siamensishaemoglobin hydrolysate induces membrane permeabilization causing iron dysregulation, oxidative stress and bacterial death. J Appl Microbiol 2017; 123:819-831. [DOI: 10.1111/jam.13539] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/03/2017] [Accepted: 07/06/2017] [Indexed: 12/22/2022]
Affiliation(s)
- J. Lueangsakulthai
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI); Faculty of Science; Khon Kaen University; Khon Kaen Thailand
- Department of Biochemistry; Faculty of Science; Khon Kaen University; Khon Kaen Thailand
| | - N. Jangpromma
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI); Faculty of Science; Khon Kaen University; Khon Kaen Thailand
- Office of the Dean; Faculty of Science; Khon Kaen University; Khon Kaen Thailand
| | | | - J.E. McKendrick
- Department of Chemistry; The University of Reading; Reading UK
| | - W. Khunkitti
- Department of Pharmaceutical Technology; Faculty of Pharmaceutical Science; Khon Kaen University; Khon Kaen Thailand
| | - S.E. Maddocks
- Department of Biomedical Sciences; Cardiff School of Health Science; Cardiff Metropolitan University; Cardiff UK
| | - S. Klaynongsruang
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI); Faculty of Science; Khon Kaen University; Khon Kaen Thailand
- Department of Biochemistry; Faculty of Science; Khon Kaen University; Khon Kaen Thailand
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