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Zhang Q, Soulère L, Queneau Y. Amide bioisosteric replacement in the design and synthesis of quorum sensing modulators. Eur J Med Chem 2024; 273:116525. [PMID: 38801798 DOI: 10.1016/j.ejmech.2024.116525] [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: 03/13/2024] [Revised: 05/08/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
The prevention or control of bacterial infections requires continuous search for novel approaches among which bacterial quorum sensing inhibition is considered as a complementary antibacterial strategy. Quorum sensing, used by many different bacteria, functions through a cell-to-cell communication mechanism relying on chemical signals, referred to as autoinducers, such as N-acyl homoserine lactones (AHLs) which are the most common chemical signals in this system. Designing analogs of these autoinducers is one of the possible ways to interfere with quorum sensing. Since bioisosteres are powerful tools in medicinal chemistry, targeting analogs of AHLs or other signal molecules and mimics of known QS modulators built on amide bond bioisosteres is a relevant strategy in molecular design and synthetic routes. This review highlights the application of amide bond bioisosteric replacement in the design and synthesis of novel quorum sensing inhibitors.
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Affiliation(s)
- Qiang Zhang
- Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients, Hubei University of Education, 129 Second Gaoxin Road, Wuhan 430205, China
| | - Laurent Soulère
- INSA Lyon, CNRS, Universite Claude Bernard Lyon 1, UMR 5246, ICBMS, Bât. E. Lederer, 1 rue Victor Grignard, F-69622, Villeurbanne, France
| | - Yves Queneau
- INSA Lyon, CNRS, Universite Claude Bernard Lyon 1, UMR 5246, ICBMS, Bât. E. Lederer, 1 rue Victor Grignard, F-69622, Villeurbanne, France.
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2
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Khayat MT, Elbaramawi SS, Nazeih SI, Safo MK, Khafagy ES, Ali MAM, Abbas HA, Hegazy WAH, Seleem NM. Diminishing the Pathogenesis of the Food-Borne Pathogen Serratia marcescens by Low Doses of Sodium Citrate. BIOLOGY 2023; 12:biology12040504. [PMID: 37106705 PMCID: PMC10135860 DOI: 10.3390/biology12040504] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/21/2023] [Accepted: 03/25/2023] [Indexed: 03/29/2023]
Abstract
Protecting food from bacterial contamination is crucial for ensuring its safety and avoiding foodborne illness. Serratia marcescens is one of the food bacterial contaminants that can form biofilms and pigments that spoil the food product and could cause infections and illness to the consumer. Food preservation is essential to diminish such bacterial contaminants or at least reduce their pathogenesis; however, it should not affect food odor, taste, and consistency and must be safe. Sodium citrate is a well-known safe food additive and the current study aims to evaluate its anti-virulence and anti-biofilm activity at low concentrations against S. marcescens. The anti-virulence and antibiofilm activities of sodium citrate were evaluated phenotypically and genotypically. The results showed the significant effect of sodium citrate on decreasing the biofilm formation and other virulence factors, such as motility and the production of prodigiosin, protease, and hemolysins. This could be owed to its downregulating effect on the virulence-encoding genes. An in vivo investigation was conducted on mice and the histopathological examination of isolated tissues from the liver and kidney of mice confirmed the anti-virulence activity of sodium citrate. In addition, an in silico docking study was conducted to evaluate the sodium citrate binding ability to S. marcescens quorum sensing (QS) receptors that regulates its virulence. Sodium citrate showed a marked virtual ability to compete on QS proteins, which could explain sodium citrate’s anti-virulence effect. In conclusion, sodium citrate is a safe food additive and can be used at low concentrations to prevent contamination and biofilm formation by S. marcescens and other bacteria.
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Affiliation(s)
- Maan T. Khayat
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: (M.T.K.); (W.A.H.H.)
| | - Samar S. Elbaramawi
- Medicinal Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Shaimaa I. Nazeih
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Martin K. Safo
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23219, USA
| | - El-Sayed Khafagy
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-kharj 11942, Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Suez Canal University, Ismailia 41552, Egypt
| | - Mohamed A. M. Ali
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University, Riyadh 11432, Saudi Arabia
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Hisham A. Abbas
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Wael A. H. Hegazy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
- Pharmacy Program, Department of Pharmaceutical Sciences, Oman College of Health Sciences, Muscat 113, Oman
- Correspondence: (M.T.K.); (W.A.H.H.)
| | - Noura M. Seleem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
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3
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The Role of Quorum Sensing Molecules in Bacterial-Plant Interactions. Metabolites 2023; 13:metabo13010114. [PMID: 36677039 PMCID: PMC9863971 DOI: 10.3390/metabo13010114] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/03/2023] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
Quorum sensing (QS) is a system of communication of bacterial cells by means of chemical signals called autoinducers, which modulate the behavior of entire populations of Gram-negative and Gram-positive bacteria. Three classes of signaling molecules have been recognized, Al-1, Al-2, Al-3, whose functions are slightly different. However, the phenomenon of quorum sensing is not only concerned with the interactions between bacteria, but the whole spectrum of interspecies interactions. A growing number of research results confirm the important role of QS molecules in the growth stimulation and defense responses in plants. Although many of the details concerning the signaling metabolites of the rhizosphere microflora and plant host are still unknown, Al-1 compounds should be considered as important components of bacterial-plant interactions, leading to the stimulation of plant growth and the biological control of phytopathogens. The use of class 1 autoinducers in plants to induce beneficial activity may be a practical solution to improve plant productivity under field conditions. In addition, researchers are also interested in tools that offer the possibility of regulating the activity of autoinducers by means of degrading enzymes or specific inhibitors (QSI). Current knowledge of QS and QSI provides an excellent foundation for the application of research to biopreparations in agriculture, containing a consortia of AHL-producing bacteria and QS inhibitors and limiting the growth of phytopathogenic organisms.
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Ampomah-Wireko M, Luo C, Cao Y, Wang H, Nininahazwe L, Wu C. Chemical probe of AHL modulators on quorum sensing in Gram-Negative Bacteria and as antiproliferative agents: A review. Eur J Med Chem 2021; 226:113864. [PMID: 34626877 DOI: 10.1016/j.ejmech.2021.113864] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/17/2021] [Accepted: 09/19/2021] [Indexed: 11/16/2022]
Abstract
Pathogenic bacteria use an intercellular chemical communication system called quorum sensing (QS) to control the expression of cellular functions such as virulence factors, biofilm formation, toxin production, and antibiotic resistance in a manner that is highly dependent on population density. Hence, since the emergence of QS, there has been a great interest in exploiting the QS mechanism as a new drug target. Therefore, blocking the QS mechanism can be an effective strategy to control infection and solve the problem of drug resistance. So far, there is no clinically approved anti-QS drug that can disable the circuits of QS systems. This review discusses the quorum-sensing network systems and novel anti-QS inhibitors in some Gram-negative bacteria.
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Affiliation(s)
- Maxwell Ampomah-Wireko
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education & School of Pharmaceutical Sciences, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of New Veterinary Drug Preparation Innovation, Zhengzhou, 450001, PR China
| | - Chunying Luo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education & School of Pharmaceutical Sciences, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of New Veterinary Drug Preparation Innovation, Zhengzhou, 450001, PR China
| | - Yaquan Cao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education & School of Pharmaceutical Sciences, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of New Veterinary Drug Preparation Innovation, Zhengzhou, 450001, PR China
| | - Huanhuan Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education & School of Pharmaceutical Sciences, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of New Veterinary Drug Preparation Innovation, Zhengzhou, 450001, PR China
| | - Lauraine Nininahazwe
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education & School of Pharmaceutical Sciences, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of New Veterinary Drug Preparation Innovation, Zhengzhou, 450001, PR China
| | - Chunli Wu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education & School of Pharmaceutical Sciences, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of New Veterinary Drug Preparation Innovation, Zhengzhou, 450001, PR China.
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He W, Yang H, Wang X, Li H, Dong Q. Growth of Salmonella Enteritidis in the presence of quorum sensing signaling compounds produced by Pseudomonas aeruginosa. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2021. [DOI: 10.1515/ijfe-2021-0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Abstract
Quorum sensing (QS) can exist in food-related bacteria and potentially affect bacterial growth through acyl-homoserine lactones (AHLs). To verify the role of QS compounds in the cell-free supernatant, this study examined the effect of supernatant extracted from Pseudomonas aeruginosa culture on the growth kinetics of Salmonella Enteritidis. The results showed that the lag time (λ) of S. Enteritidis was apparently reduced (p < 0.05) under the influence of P. aeruginosa culture supernatant compared with the S. Enteritidis culture supernatant. HPLC-MS/MS test demonstrated that AHLs secreted by P. aeruginosa were mainly C14-HSL with a content of 85.71 μg/mL and a small amount of 3-oxo-C12-HSL. In addition, the commercially synthetic C14-HSL had positive effects on the growth of S. Enteritidis, confirming once again that the growth of S. Enteritidis was affected by AHL metabolized by other bacteria and the complexity of bacterial communication.
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Affiliation(s)
- Weijia He
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
| | - Huamei Yang
- Taizhou Center for Disease Control and Prevention , Taizhou , Jiangsu 225300 , P. R. China
| | - Xiang Wang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
| | - Hongmei Li
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
| | - Qingli Dong
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
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Abstract
1,2,3-triazoles represent a functional heterocyclic core that has been at the center of modern organic chemistry since the beginning of click chemistry. Being a versatile framework, such an aromatic ring can be observed in uncountable molecules useful in medicine and photochemistry, just to name a few. This review summarizes the progress achieved in their synthesis from 2015 to today, with particular emphasis on the development of new catalytic and eco-compatible approaches. In doing so, we subdivided the report based on their degree of functionalization and, for each subparagraph, we outlined the role of the catalyst employed.
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Zhang Q, Li S, Queneau Y, Soulère L. Synthesis of new 1,4‐ and 1,5‐disubstituted
N
‐ethyl acetate and
N
‐α‐butyro‐γ‐lactone alkylimidazole derivatives as
N
‐acylhomoserine lactone analogs. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qiang Zhang
- Univ Lyon, INSA Lyon Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires Villeurbanne France
| | - Si‐Zhe Li
- Univ Lyon, INSA Lyon Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires Villeurbanne France
| | - Yves Queneau
- Univ Lyon, INSA Lyon Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires Villeurbanne France
| | - Laurent Soulère
- Univ Lyon, INSA Lyon Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires Villeurbanne France
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Zhang Q, Li S, Hachicha M, Boukraa M, Soulère L, Efrit ML, Queneau Y. Heterocyclic Chemistry Applied to the Design of N-Acyl Homoserine Lactone Analogues as Bacterial Quorum Sensing Signals Mimics. Molecules 2021; 26:molecules26175135. [PMID: 34500565 PMCID: PMC8433848 DOI: 10.3390/molecules26175135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 07/31/2021] [Indexed: 12/02/2022] Open
Abstract
N-acyl homoserine lactones (AHLs) are small signaling molecules used by many Gram-negative bacteria for coordinating their behavior as a function of their population density. This process, based on the biosynthesis and the sensing of such molecular signals, and referred to as Quorum Sensing (QS), regulates various gene expressions, including growth, virulence, biofilms formation, and toxin production. Considering the role of QS in bacterial pathogenicity, its modulation appears as a possible complementary approach in antibacterial strategies. Analogues and mimics of AHLs are therefore biologically relevant targets, including several families in which heterocyclic chemistry provides a strategic contribution in the molecular design and the synthetic approach. AHLs consist of three main sections, the homoserine lactone ring, the central amide group, and the side chain, which can vary in length and level of oxygenation. The purpose of this review is to summarize the contribution of heterocyclic chemistry in the design of AHLs analogues, insisting on the way heterocyclic building blocks can serve as replacements of the lactone moiety, as a bioisostere for the amide group, or as an additional pattern appended to the side chain. A few non-AHL-related heterocyclic compounds with AHL-like QS activity are also mentioned.
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Affiliation(s)
- Qiang Zhang
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, Bât. E. Lederer, 1 Rue Victor Grignard, F-69622 Villeurbanne, France; (Q.Z.); (S.L.); (M.H.); (M.B.)
| | - Sizhe Li
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, Bât. E. Lederer, 1 Rue Victor Grignard, F-69622 Villeurbanne, France; (Q.Z.); (S.L.); (M.H.); (M.B.)
| | - Maha Hachicha
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, Bât. E. Lederer, 1 Rue Victor Grignard, F-69622 Villeurbanne, France; (Q.Z.); (S.L.); (M.H.); (M.B.)
- Laboratoire de Synthèse Organique Sélective et Hétérocyclique, Faculté des Sciences de Tunis, Université de Tunis El Manar, El Manar, Tunis 2092, Tunisia
| | - Mohamed Boukraa
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, Bât. E. Lederer, 1 Rue Victor Grignard, F-69622 Villeurbanne, France; (Q.Z.); (S.L.); (M.H.); (M.B.)
- Laboratoire de Synthèse Organique Sélective et Hétérocyclique, Faculté des Sciences de Tunis, Université de Tunis El Manar, El Manar, Tunis 2092, Tunisia
| | - Laurent Soulère
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, Bât. E. Lederer, 1 Rue Victor Grignard, F-69622 Villeurbanne, France; (Q.Z.); (S.L.); (M.H.); (M.B.)
- Correspondence: (L.S.); (M.L.E.); (Y.Q.)
| | - Mohamed L. Efrit
- Laboratoire de Synthèse Organique Sélective et Hétérocyclique, Faculté des Sciences de Tunis, Université de Tunis El Manar, El Manar, Tunis 2092, Tunisia
- Correspondence: (L.S.); (M.L.E.); (Y.Q.)
| | - Yves Queneau
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, UMR 5246, CNRS, ICBMS, Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, Bât. E. Lederer, 1 Rue Victor Grignard, F-69622 Villeurbanne, France; (Q.Z.); (S.L.); (M.H.); (M.B.)
- Correspondence: (L.S.); (M.L.E.); (Y.Q.)
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Aldawsari MF, Khafagy ES, Saqr AA, Alalaiwe A, Abbas HA, Shaldam MA, Hegazy WAH, Goda RM. Tackling Virulence of Pseudomonas aeruginosa by the Natural Furanone Sotolon. Antibiotics (Basel) 2021; 10:antibiotics10070871. [PMID: 34356792 PMCID: PMC8300740 DOI: 10.3390/antibiotics10070871] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
The bacterial resistance development due to the incessant administration of antibiotics has led to difficulty in their treatment. Natural adjuvant compounds can be co-administered to hinder the pathogenesis of resistant bacteria. Sotolon is the prevailing aromatic compound that gives fenugreek its typical smell. In the current work, the anti-virulence activities of sotolon on Pseudomonas aeruginosa have been evaluated. P. aeruginosa has been treated with sotolon at sub-minimum inhibitory concentration (MIC), and production of biofilm and other virulence factors were assessed. Moreover, the anti-quorum sensing (QS) activity of sotolon was in-silico evaluated by evaluating the affinity of sotolon to bind to QS receptors, and the expression of QS genes was measured in the presence of sotolon sub-MIC. Furthermore, the sotolon in-vivo capability to protect mice against P. aeruginosa was assessed. Significantly, sotolon decreased the production of bacterial biofilm and virulence factors, the expression of QS genes, and protected mice from P. aeruginosa. Conclusively, the plant natural substance sotolon attenuated the pathogenicity of P. aeruginosa, locating it as a plausible potential therapeutic agent for the treatment of its infections. Sotolon can be used in the treatment of bacterial infections as an alternative or adjuvant to antibiotics to combat their high resistance to antibiotics.
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Affiliation(s)
- Mohammed F. Aldawsari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-kharj 11942, Saudi Arabia; (M.F.A.); (A.A.S.); (A.A.)
| | - El-Sayed Khafagy
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-kharj 11942, Saudi Arabia; (M.F.A.); (A.A.S.); (A.A.)
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: ; Tel.: +966-533-564-286
| | - Ahmed Al Saqr
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-kharj 11942, Saudi Arabia; (M.F.A.); (A.A.S.); (A.A.)
| | - Ahmed Alalaiwe
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-kharj 11942, Saudi Arabia; (M.F.A.); (A.A.S.); (A.A.)
| | - Hisham A. Abbas
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.A.A.); (W.A.H.H.)
| | - Moataz A. Shaldam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafr El-Sheikh 33511, Egypt;
| | - Wael A. H. Hegazy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.A.A.); (W.A.H.H.)
| | - Reham M. Goda
- Department of Microbiology and Biotechnology, Faculty of Pharmacy, Delta University for Science and Biotechnology, Gamasa 35712, Egypt;
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10
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Bhardwaj S, Bhatia S, Singh S, Franco Jr F. Growing emergence of drug-resistant Pseudomonas aeruginosa and attenuation of its virulence using quorum sensing inhibitors: A critical review. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:699-719. [PMID: 34630947 PMCID: PMC8487598 DOI: 10.22038/ijbms.2021.49151.11254] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 11/24/2020] [Indexed: 12/25/2022]
Abstract
A perilous increase in the number of bacterial infections has led to developing throngs of antibiotics for increasing the quality and expectancy of life. Pseudomonas aeruginosa is becoming resistant to all known conventional antimicrobial agents thereby posing a deadly threat to the human population. Nowadays, targeting virulence traits of infectious agents is an alternative approach to antimicrobials that is gaining much popularity to fight antimicrobial resistance. Quorum sensing (QS) involves interspecies communication via a chemical signaling pathway. Under this mechanism, cells work in a concerted manner, communicate with each other with the help of signaling molecules called auto-inducers (AI). The virulence of these strains is driven by genes, whose expression is regulated by AI, which in turn acts as transcriptional activators. Moreover, the problem of antibiotic-resistance in case of infections caused by P. aeruginosa becomes more alarming among immune-compromised patients, where the infectious agents easily take over the cellular machinery of the host while hidden in the QS mediated biofilms. Inhibition of the QS circuit of P. aeruginosa by targeting various signaling pathways such as LasR, RhlR, Pqs, and QScR transcriptional proteins will help in blocking downstream signal transducers which could result in reducing the bacterial virulence. The anti-virulence agent does not pose an immediate selective pressure on growing bacterium and thus reduces the pathogenicity without harming the target species. Here, we review exclusively, the growing emergence of multi-drug resistant (MDR) P. aeruginosa and the critical literature survey of QS inhibitors with their potential application of blocking P. aeruginosa infections.
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Affiliation(s)
- Snigdha Bhardwaj
- Department of Pharmaceutical Science, SHALOM Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences (SHUATS), Naini, Prayagraj, India
| | - Sonam Bhatia
- Department of Pharmaceutical Science, SHALOM Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences (SHUATS), Naini, Prayagraj, India
| | - Shaminder Singh
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurugram Expressway, Faridabad - 121 001, Haryana, India
| | - Francisco Franco Jr
- Department of Chemistry, De La Salle University, Manila, Metro Manila, Philippines
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11
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Hegazy WAH, Khayat MT, Ibrahim TS, Youns M, Mosbah R, Soliman WE. Repurposing of antidiabetics as Serratia marcescens virulence inhibitors. Braz J Microbiol 2021; 52:627-638. [PMID: 33686563 DOI: 10.1007/s42770-021-00465-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/28/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Serratia marcescens becomes an apparent nosocomial pathogen and causes a variety of infections. S. marcescens possess various virulence factors that are regulated by intercellular communication system quorum sensing (QS). Targeting bacterial virulence is a proposed strategy to overcome bacterial resistance. Sitagliptin anti-QS activity has been demonstrated previously and we aimed in this study to investigate the effects of antidiabetic drugs vildagliptin and metformin compared to sitagliptin on S. marcescens pathogenesis. METHODS We assessed the effects of tested drugs in subinhibitory concentrations phenotypically on the virulence factors and genotypically on the virulence encoding genes' expressions. The protection of tested drugs on S. marcescens pathogenesis was performed in vivo. Molecular docking study has been conducted to evaluate the interference capabilities of tested drugs to the SmaR QS receptor. RESULTS Vildagliptin reduced the expression of virulence encoding genes but did not show in vitro or in vivo anti-virulence activities. Metformin reduced the expression of virulence encoding genes and inhibited bacterial virulence in vitro but did not show in vivo protection. Sitagliptin significantly inhibited virulence factors in vitro, reduced the expression of virulence factors and protected mice from S. marcescens. Docking study revealed that sitagliptin is more active than metformin and fully binds to SmaR receptor, whereas vildagliptin had single interaction to SmaR. CONCLUSION The downregulation of virulence genes was not enough to show anti-virulence activities. Hindering of QS receptors may play a crucial role in diminishing bacterial virulence.
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Affiliation(s)
- Wael A H Hegazy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt.
| | - Maan T Khayat
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Tarek S Ibrahim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.,Center of Excellence for Drug Research & Pharmaceutical Industries, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.,Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
| | - Mahmoud Youns
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Rasha Mosbah
- Infection control Unit, Zagazig University Hospitals, Zagazig University, Zagazig, 44519, Egypt
| | - Wafaa E Soliman
- Department of Biomedical Sciences, College of Clinical Pharmacy, King Faisal University, AL AHSA, 31982, Kingdom of Saudi Arabia.,Microbiology and Immunology Department, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 35712, Egypt
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Tung TT, Xuan HL. “Left-hand strategy” for the design, synthesis and discovery of novel triazole–mercaptobenzothiazole hybrid compounds as potent quorum sensing inhibitors and anti-biofilm formation of Pseudomonas aeruginosa. NEW J CHEM 2021. [DOI: 10.1039/d1nj04436b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triazole–benzothiazole hybrids as potent quorum sensing inhibitors and antibiofilm formation of Gram-negative bacteria.
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Affiliation(s)
- Truong Thanh Tung
- Faculty of Pharmacy, PHENIKAA University, Hanoi 12116, Vietnam
- PHENIKAA Institute for Advanced Study (PIAS), PHENIKAA University, Hanoi 12116, Vietnam
| | - Huy Luong Xuan
- Faculty of Pharmacy, PHENIKAA University, Hanoi 12116, Vietnam
- PHENIKAA Institute for Advanced Study (PIAS), PHENIKAA University, Hanoi 12116, Vietnam
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13
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Repurposing Anti-diabetic Drugs to Cripple Quorum Sensing in Pseudomonas aeruginosa. Microorganisms 2020; 8:microorganisms8091285. [PMID: 32842696 PMCID: PMC7569791 DOI: 10.3390/microorganisms8091285] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 12/13/2022] Open
Abstract
Pseudomonas aeruginosa is a significant human pathogen, it possesses almost all of the known antimicrobial resistance mechanisms. Quorum sensing (QS) is an intercellular communication system that orchestrates bacterial virulence and its targeting is an effective approach to diminish its pathogenesis. Repurposing of drugs is an advantageous strategy, in this study we aimed to repurpose the anti-diabetic drugs sitagliptin, metformin and vildagliptin as anti-QS in P. aeruginosa. The effects of sub-inhibitory concentrations of the tested drugs on the expression of QS-encoding genes and QS-regulated virulence factors were assessed. The protective activity of tested drugs on P. aeruginosa pathogenesis was evaluated in vivo on mice. In silico analysis was performed to evaluate the interference capabilities of the tested drugs on QS-receptors. Although the three drugs reduced the expression of QS-encoding genes, only sitagliptin inhibited the P. aeruginosa virulence in vitro and protected mice from it. In contrast, metformin showed significant in vitro anti-QS activities but failed to protect mice from P. aeruginosa. Vildagliptin did not show any in vitro or in vivo efficacy. Sitagliptin is a promising anti-QS agent because of its chemical nature that hindered QS-receptors. Moreover, it gives an insight to consider their similar chemical structures as anti-QS agents or even design new chemically similar anti-QS pharmacophores.
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Jiang K, Yan X, Yu J, Xiao Z, Wu H, Zhao M, Yue Y, Zhou X, Xiao J, Lin F. Design, synthesis, and biological evaluation of 3-amino-2-oxazolidinone derivatives as potent quorum-sensing inhibitors of Pseudomonas aeruginosa PAO1. Eur J Med Chem 2020; 194:112252. [DOI: 10.1016/j.ejmech.2020.112252] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 03/17/2020] [Accepted: 03/17/2020] [Indexed: 12/25/2022]
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Díaz MA, González SN, Alberto MR, Arena ME. Human probiotic bacteria attenuate Pseudomonas aeruginosa biofilm and virulence by quorum-sensing inhibition. BIOFOULING 2020; 36:597-609. [PMID: 32573275 DOI: 10.1080/08927014.2020.1783253] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/04/2020] [Accepted: 06/11/2020] [Indexed: 06/11/2023]
Abstract
This work investigated chloroform extracts from culture supernatants of two human probiotic bacteria, Lactobacillus casei CRL 431 and Lactobacillus acidophilus CRL 730 for the production of virulence factors and quorum sensing (QS) interference against three Pseudomonas aeruginosa strains. Both extracts inhibited biofilm biomass (up to 50%), biofilm metabolic activity (up to 39%), the production of the enzyme elastase (up to 63%) and pyocyanin (up to 77%), and decreased QS, without presenting any antibacterial acgivity. In addition, the chloroform extracts of both strains disrupted preformed biofilms of the three strains of P. aeruginosa analyzed (up to 40%). GC-MS analysis revealed that the major compounds detected in the bioactive extracts were four diketopiperazines. This study suggests that the metabolites of L. casei and L. acidophilus could be a promising alternative to combat the pathogenicity of P. aeruginosa.
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Affiliation(s)
- Myriam Anabel Díaz
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
| | - Silvia Nelina González
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán (UNT), Tucumán, Argentina
| | - María Rosa Alberto
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán (UNT), Tucumán, Argentina
| | - Mario Eduardo Arena
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán (UNT), Tucumán, Argentina
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Abbas HA, Hegazy WAH. Repurposing anti-diabetic drug "Sitagliptin" as a novel virulence attenuating agent in Serratia marcescens. PLoS One 2020; 15:e0231625. [PMID: 32298346 PMCID: PMC7162429 DOI: 10.1371/journal.pone.0231625] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 03/26/2020] [Indexed: 12/13/2022] Open
Abstract
Background Serratia marcescens is an emerging pathogen that causes a variety of health care associated infections. S. marcescens is equipped with an arsenal of virulence factors such as biofilm formation, swimming and swarming motilities, prodigiosin, protease and others which enable it to initiate and cause the infection. These virulence factors are orchestrated under the umbrella of an intercellular communication system named Quorum sensing (QS). QS allows bacterial population to synchronize the expression of virulence genes upon detection of a chemical signaling molecule. Targeting bacterial virulence is a promising approach to attenuate bacteria and enhances the ability of immune system to eradicate the bacterial infection. Drug repurposing is an advantageous strategy that confers new applications for drugs outside the scope of their original medical use. This promising strategy offers the use of safe approved compounds, which potentially lowers the costs and shortens the time than that needed for development of new drugs. Sitagliptin is dipeptidyl peptidase-4 (DPP-4) inhibitor, is used to treat diabetes mellitus type II as it increases the production of insulin and decreasing the production of glucagon by the pancreas. We aimed in this study to repurpose sitagliptin, investigating the anti-virulence activities of sitagliptin on S. marcescens. Methods The effect of sub-inhibitory concentrations of sitagliptin on virulence factors; protease, prodigiosin, biofilm formation, swimming and swarming motilities was estimated phenotypically. The qRT-PCR was used to show the effect of sitagliptin on the expression of QS-regulated virulence genes. The in-vivo protective activity of sitagliptin on S. marcescens pathogenesis was evaluated on mice. Results Sitagliptin (1 mg/ml) significantly reduced the biofilm formation, swimming and swarming motilities, prodigiosin and protease. The qRT-PCR confirmed the effect on virulence as shown by down regulating the expression of fimA, fimC, flhC, flhD, bsmB, rssB, rsmA, pigP, and shlA genes. Moreover, the in-vivo findings showed the efficient ability of sitagliptin to weaken S. marcescens pathogenesis. Conclusion Sitagliptin is a promising anti-virulence agent against S. marcescens that may be beneficial in the control of healthcare associated infections caused by S. marcescens.
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Affiliation(s)
- Hisham A. Abbas
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Wael A. H. Hegazy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
- * E-mail:
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Ma Y, Wang C, Li Y, Li J, Wan Q, Chen J, Tay FR, Niu L. Considerations and Caveats in Combating ESKAPE Pathogens against Nosocomial Infections. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1901872. [PMID: 31921562 PMCID: PMC6947519 DOI: 10.1002/advs.201901872] [Citation(s) in RCA: 139] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/04/2019] [Indexed: 05/19/2023]
Abstract
ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) are among the most common opportunistic pathogens in nosocomial infections. ESKAPE pathogens distinguish themselves from normal ones by developing a high level of antibiotic resistance that involves multiple mechanisms. Contemporary therapeutic strategies which are potential options in combating ESKAPE bacteria need further investigation. Herein, a broad overview of the antimicrobial research on ESKAPE pathogens over the past five years is provided with prospective clinical applications.
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Affiliation(s)
- Yu‐Xuan Ma
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
| | - Chen‐Yu Wang
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
| | - Yuan‐Yuan Li
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
| | - Jing Li
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
| | - Qian‐Qian Wan
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
| | - Ji‐Hua Chen
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
| | - Franklin R. Tay
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
- The Graduate SchoolAugusta University1430, John Wesley Gilbert DriveAugustaGA30912‐1129USA
| | - Li‐Na Niu
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical University145 Changle West RoadXi'anShaanxi710032P. R. China
- The Graduate SchoolAugusta University1430, John Wesley Gilbert DriveAugustaGA30912‐1129USA
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Srinivasarao S, Nandikolla A, Nizalapur S, Yu TT, Pulya S, Ghosh B, Murugesan S, Kumar N, Chandra Sekhar KVG. Design, synthesis and biological evaluation of 1,2,3-triazole based 2-aminobenzimidazoles as novel inhibitors of LasR dependent quorum sensing in Pseudomonas aeruginosa. RSC Adv 2019; 9:29273-29292. [PMID: 35528444 PMCID: PMC9071802 DOI: 10.1039/c9ra05059k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/06/2019] [Indexed: 11/26/2022] Open
Abstract
Bacteria regulate their phenotype, growth and population via a signalling pathway known as quorum sensing. In this process, bacteria produce signalling molecules (autoinducers) to recognize their population density. Inhibiting this quorum sensing signalling pathway is one of the potential methods to treat bacterial infection. 2-Aminobenimdazoles are reported to be the strongest inhibitors of quorum sensing against wild-type P. aeruginosa. 1,2,3-Triazole based acyl homoserine lactones are found to be good inhibitors of the quorum sensing LasR receptor. Hence, in our current study, forty 1,2,3-triazole based 2-aminobenzimdazoles were synthesized and characterized using IR, NMR, MS and elemental analysis. A single crystal was developed for N-(1H-benzo[d]imidazol-2-yl)-2-(4-nonyl-1H-1,2,3-triazol-1-yl)acetamide (6d). All final compounds were screened for in vitro quorum sensing inhibitory activity against Pseudomonas aeruginosa. The quorum sensing inhibitory activity was determined in the LasR expressing P. aeruginosa MH602 reporter strain by measuring green fluorescent protein production. Among the title compounds, N-(1H-benzo[d]imidazol-2-yl)-2-(4-(4-chlorophenyl)-1H-1,2,3-triazol-1-yl)acetamide (6i) exhibited good quorum sensing inhibitory activity of 64.99% at 250 μM. N-(1H-Benzo[d]imidazol-2-yl)-2-(4-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)acetamide (6p) exhibited the most promising quorum sensing inhibitory activity with 68.23, 67.10 and 63.67% inhibition at 250, 125 and 62.5 μM, respectively. N-(1H-Benzo[d]imidazol-2-yl)-2-(4-(4-(trifluoromethyl)phenyl)-1H-1,2,3-triazol-1-yl)acetamide (6o) and N-(5,6-dimethyl-1H-benzo[d]imidazol-2-yl)-2-(4-(4-(trifluoromethyl)phenyl)-1H-1,2,3-triazol-1-yl)acetamide (7l) also exhibited 64.25% and 65.80% quorum sensing inhibition at 250 μM. Compound 6p, the most active quorum sensing inhibitor, also displayed low cytotoxicity at the tested concentrations (25, 50 and 100 μM) against normal human embryonic kidney cell lines. Finally, a docking study using Schrodinger Glide elucidated the possible putative binding mode of the significantly active compound 6p at the active site of the target LasR receptor (PDB ID: 2UV0). Out of 40 benzimdazoles, 12 exhibited potent QSI activity against P. aeruginosa6p, most active QSI is docked to LasR and is less toxic against HEK 293 cell line.![]()
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Affiliation(s)
| | | | | | | | - Sravani Pulya
- Department of Pharmacy
- Birla Institute of Technology and Science
- Hyderabad-500078
- India
| | - Balaram Ghosh
- Department of Pharmacy
- Birla Institute of Technology and Science
- Hyderabad-500078
- India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology and Science
- Pilani
- India
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19
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Srinivasarao S, Nizalapur S, Yu TT, Wenholz DS, Trivedi P, Ghosh B, Rangan K, Kumar N, Gowri Chandra Sekhar K. Design, Synthesis and Biological Evaluation of Triazole-Containing 2-Phenylindole and Salicylic Acid as Quorum Sensing Inhibitors Against Pseudomonas aeruginosa. ChemistrySelect 2018. [DOI: 10.1002/slct.201801622] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Singireddi Srinivasarao
- Department of Chemistry; Birla Institute of Technology and Science, Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad - 500078, Telangana India
| | | | - Tsz Tin Yu
- School of Chemistry; UNSW Sydney; NSW 2052, Australia
| | | | - Prakruti Trivedi
- Department of Pharmacy; Birla Institute of Technology and Science-Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad-500 078, Telangana India
| | - Balaram Ghosh
- Department of Pharmacy; Birla Institute of Technology and Science-Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad-500 078, Telangana India
| | - Krishnan Rangan
- Department of Chemistry; Birla Institute of Technology and Science, Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad - 500078, Telangana India
| | - Naresh Kumar
- School of Chemistry; UNSW Sydney; NSW 2052, Australia
| | - Kondapalli Venkata Gowri Chandra Sekhar
- Department of Chemistry; Birla Institute of Technology and Science, Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad - 500078, Telangana India
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Preparation and Use of a General Solid-Phase Intermediate to Biomimetic Scaffolds and Peptide Condensations. Molecules 2018; 23:molecules23071762. [PMID: 30021979 PMCID: PMC6100553 DOI: 10.3390/molecules23071762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 07/11/2018] [Accepted: 07/14/2018] [Indexed: 11/18/2022] Open
Abstract
The Distributed Drug Discovery (D3) program develops simple, powerful, and reproducible procedures to enable the distributed synthesis of large numbers of potential drugs for neglected diseases. The synthetic protocols are solid-phase based and inspired by published work. One promising article reported that many biomimetic molecules based on diverse scaffolds with three or more sites of variable substitution can be synthesized in one or two steps from a common key aldehyde intermediate. This intermediate was prepared by the ozonolysis of a precursor functionalized at two variable sites, restricting their presence in the subsequently formed scaffolds to ozone compatible functional groups. To broaden the scope of the groups available at one of these variable sites, we developed a synthetic route to an alternative, orthogonally protected key intermediate that allows the incorporation of ozone sensitive groups after the ozonolysis step. The utility of this orthogonally protected intermediate is demonstrated in the synthesis of several representative biomimetic scaffolds containing ozonolytically labile functional groups. It is compatible with traditional Fmoc peptide chemistry, permitting it to incorporate peptide fragments for use in fragment condensations with peptides containing cysteine at the N-terminus. Overall yields for its synthesis and utilization (as many as 13 steps) indicate good conversions at each step.
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21
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Borges A, Simões M, Todorović TR, Filipović NR, García-Sosa AT. Cobalt Complex with Thiazole-Based Ligand as New Pseudomonas aeruginosa Quorum Quencher, Biofilm Inhibitor and Virulence Attenuator. Molecules 2018; 23:E1385. [PMID: 29890626 PMCID: PMC6099793 DOI: 10.3390/molecules23061385] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/30/2018] [Accepted: 06/07/2018] [Indexed: 12/31/2022] Open
Abstract
Pseudomonas aeruginosa is one of the most dreaded human pathogens, because of its intrinsic resistance to a number of commonly used antibiotics and ability to form sessile communities (biofilms). Innovative treatment strategies are required and that can rely on the attenuation of the pathogenicity and virulence traits. The interruption of the mechanisms of intercellular communication in bacteria (quorum sensing) is one of such promising strategies. A cobalt coordination compound (Co(HL)₂) synthesized from (E)-2-(2-(pyridin-2-ylmethylene)hydrazinyl)-4-(p-tolyl)thiazole (HL) is reported herein for the first time to inhibit P. aeruginosa 3-oxo-C12-HSL-dependent QS system (LasI/LasR system) and underling phenotypes (biofilm formation and virulence factors). Its interactions with a possible target, the transcriptional activator protein complex LasR-3-oxo-C12-HSL, was studied by molecular modeling with the coordination compound ligand having stronger predicted interactions than those of co-crystallized ligand 3-oxo-C12-HSL, as well as known-binder furvina. Transition metal group 9 coordination compounds may be explored in antipathogenic/antibacterial drug design.
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Affiliation(s)
- Anabela Borges
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, Porto 4200-465, Portugal.
| | - Manuel Simões
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, Porto 4200-465, Portugal.
| | - Tamara R Todorović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12⁻16, Belgrade 11000, Serbia.
| | - Nenad R Filipović
- Department of Chemistry and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade 11000, Serbia.
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22
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Synthesis and Biological Evaluation of Azamacrolide Comprising the Triazole Moiety as Quorum Sensing Inhibitors. Molecules 2018; 23:molecules23051086. [PMID: 29734673 PMCID: PMC6102594 DOI: 10.3390/molecules23051086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/21/2018] [Accepted: 05/02/2018] [Indexed: 12/13/2022] Open
Abstract
Novel azamacrolides comprising the triazole moiety were synthesized and evaluated for their quorum sensing inhibitor activities on the Agrobacterium tumefaciens. It was found that the inhibition rate of compound Z12-3 at 200 mg/L (0.45 mM) can reach 67%. The potential binding modes between these molecules and the TraR QS receptor was performed by molecular docking. The results showed that the two nitrogen atoms in the triazole ring of Z12-3 formed hydrogen bonds with GLN-2, and the carbonyl group (C=O) in the amide formed hydrogen bonds with water. It was worth noting that the carbonyl group on the macrolides formed hydrogen bonds with the G-106 base in the DNA. These azamacrolides may block quorum sensing expression through key amino acid residues or DNA bases in the TraR QS receptor by hydrogen-bonded.
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23
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Leichnitz D, Raguž L, Beemelmanns C. Total synthesis and functional analysis of microbial signalling molecules. Chem Soc Rev 2018; 46:6330-6344. [PMID: 28902198 DOI: 10.1039/c6cs00665e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Communication is essential for all domains of life. Bacteria use a plethora of small molecules to sense and orchestrate intra- and interspecies communication. Within this review, we will discuss different groups of signalling molecules, including autoinducers, virulence factors and morphogenic substances. On selected examples, we will shortly discuss their ecological roles and biosynthetic proposals. The major part of this review will focus on a systematic overview of the different synthetic methods applied towards the synthesis of signalling molecules and derivatives thereof. The described examples highlight the importance of organic synthetic method development and diversity-oriented total syntheses for structure verification, structure-function analysis and target identification.
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Affiliation(s)
- D Leichnitz
- Leibniz Institute for Natural Product Research and Infection Biology - Hans Knöll Institute, Beutenbergstraße 11a, D-07745 Jena, Germany.
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Heidari A, Noshiranzadeh N, Haghi F, Bikas R. Inhibition of quorum sensing related virulence factors of Pseudomonas aeruginosa by pyridoxal lactohydrazone. Microb Pathog 2017; 112:103-110. [PMID: 28939255 DOI: 10.1016/j.micpath.2017.09.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 09/16/2017] [Accepted: 09/18/2017] [Indexed: 01/03/2023]
Abstract
Pseudomonas aeruginosa quorum sensing (QS) system is a cell to cell signaling mechanism that regulates virulence factors and pathogenicity. Therefore, the QS system in P. aeruginosa may be an important target for pharmacological intervention. The present study aimed to investigate the effects of sub-MIC concentrations of (S,E)-2-hydroxy-N-(3-hydroxy-5-(hydroxymethyl)-2-methylpyridin-4-yl)propane hydrazide (pyridoxal lactohydrazone) against P. aeruginosa QS related virulence factors. We investigated the effect of sub-MIC concentrations of chiral pyridoxal lactohydrazone, which formed by the reaction of chiral lactic acid hydrazide and pyridoxal (one form of Vitamin B6) as bioactive reagents, on virulence factors. Treated PAO1 cultures in the presence of tested compound at 1/4 and 1/16 MIC (32 and 8 μg/mL respectively) showed significant inhibition of virulence factors including motility, alginate and pyocyanin production and susceptibility to H2O2 (P < 0.001). Also, the pyridoxal lactohydrazone showed anti-QS activity in Chromobacterium violaceum CV026 biosensor bioassay. Because of quorum sensing is a promising target for anti-virulence therapy and also important role of LasR regulatory protein in the initiation of P. aeruginosa QS system, we carried out molecular docking for understanding the interactions of pyridoxal lactohydrazone with the LasR receptor. The results of docking study suggested that the pyridoxal lactohydrazone has potential to inhibit the LasR protein. The results indicated that sub-MIC concentrations of this compound exhibited inhibitory effect on P. aeruginosa QS related virulence factors.
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Affiliation(s)
- Azam Heidari
- Department of Chemistry, Faculty of Sciences, University of Zanjan, 45371-38791, Zanjan, IR, Iran
| | - Nader Noshiranzadeh
- Department of Chemistry, Faculty of Sciences, University of Zanjan, 45371-38791, Zanjan, IR, Iran.
| | - Fakhri Haghi
- Department of Microbiology, School of Medicine, Zanjan University of Medical Sciences, 45139-56111, Zanjan, IR, Iran.
| | - Rahman Bikas
- Department of Chemistry, Faculty of Sciences, University of Zanjan, 45371-38791, Zanjan, IR, Iran
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Borges A, Sousa P, Gaspar A, Vilar S, Borges F, Simões M. Furvina inhibits the 3-oxo-C12-HSL-based quorum sensing system of Pseudomonas aeruginosa and QS-dependent phenotypes. BIOFOULING 2017; 33:156-168. [PMID: 28140677 DOI: 10.1080/08927014.2017.1280732] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 12/23/2016] [Indexed: 06/06/2023]
Abstract
Disruption of cell-cell communication or quorum sensing (QS) is considered a stimulating approach for reducing bacterial pathogenicity and resistance. Although several QS inhibitors (QSIs) have been discovered so far their clinical use remains distant. This problem can be circumvented by searching for QSI among drugs already approved for the treatment of different diseases. In this context, antibiotics have earned special attention. Whereas at high concentrations antibiotics exert a killing effect, at lower concentrations they may act as signaling molecules and as such can modulate gene expression. In this study, the antibiotic furvina was shown to be able to cause inhibition of the 3-oxo-C12-HSL-dependent QS system of Pseudomonas aeruginosa. Furvina interacts with the LasI/LasR system. The data were validated by modeling studies. Furvina can also reduce biofilm formation and decrease the production of QS-controlled virulence factors.
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Affiliation(s)
- Anabela Borges
- a LEPABE, Department of Chemical Engineering, Faculty of Engineering , University of Porto , Porto , Portugal
- b CIQ-UP, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal
- c CECAV-Veterinary and Animal Science Research Center, Department of Veterinary Science , University of Trás-os-Montes e Alto Douro , Vila Real , Portugal
| | - Pedro Sousa
- a LEPABE, Department of Chemical Engineering, Faculty of Engineering , University of Porto , Porto , Portugal
| | - Alexandra Gaspar
- b CIQ-UP, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal
| | - Santiago Vilar
- d Department of Biomedical Informatics , Columbia University , New York , USA
- e Department of Organic Chemistry, Faculty of Pharmacy , University of Santiago de Compostela , Santiago de Compostela , Spain
| | - Fernanda Borges
- b CIQ-UP, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal
| | - Manuel Simões
- a LEPABE, Department of Chemical Engineering, Faculty of Engineering , University of Porto , Porto , Portugal
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Fong J, Yuan M, Jakobsen TH, Mortensen KT, Delos Santos MMS, Chua SL, Yang L, Tan CH, Nielsen TE, Givskov M. Disulfide Bond-Containing Ajoene Analogues As Novel Quorum Sensing Inhibitors of Pseudomonas aeruginosa. J Med Chem 2016; 60:215-227. [PMID: 27977197 DOI: 10.1021/acs.jmedchem.6b01025] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Since its discovery 22 years ago, the bacterial cell-to-cell communication system, termed quorum sensing (QS), has shown potential as antipathogenic target. Previous studies reported that ajoene from garlic inhibits QS in opportunistic human pathogen Pseudomonas aeruginosa. In this study, screening of an in-house compound library revealed two sulfur-containing compounds which possess structural resemblance with ajoene and inhibit QS in bioreporter assay. Following a quantitative structure-activity relationship (SAR) study, 25 disulfide bond-containing analogues were synthesized and tested for QS inhibition activities. SAR study indicated that the allyl group could be replaced with other substituents, with the most active being benzothiazole derivative (IC50 = 0.56 μM). The compounds were able to reduce QS-regulated virulence factors (elastase, rhamnolipid, and pyocyanin) and successfully inhibit P. aeruginosa infection in murine model of implant-associated infection. Altogether, the QS inhibition activity of the synthesized compounds is encouraging for further exploration of novel analogues in antimicrobial drug development.
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Affiliation(s)
- July Fong
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore.,School of Biological Sciences, Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore
| | - Mingjun Yuan
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore
| | - Tim Holm Jakobsen
- Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen , 2200 København N, Denmark
| | - Kim T Mortensen
- Department of Chemistry, Technical University of Denmark , Kemitorvet, 2800 Kgs Lyngby, Denmark
| | - May Margarette Salido Delos Santos
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore
| | - Song Lin Chua
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore
| | - Liang Yang
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore.,School of Biological Sciences, Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore
| | - Choon Hong Tan
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, Singapore 637371, Singapore
| | - Thomas E Nielsen
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore.,Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen , 2200 København N, Denmark
| | - Michael Givskov
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore.,Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen , 2200 København N, Denmark
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27
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Johansson JR, Beke-Somfai T, Said Stålsmeden A, Kann N. Ruthenium-Catalyzed Azide Alkyne Cycloaddition Reaction: Scope, Mechanism, and Applications. Chem Rev 2016; 116:14726-14768. [DOI: 10.1021/acs.chemrev.6b00466] [Citation(s) in RCA: 223] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Johan R. Johansson
- Cardiovascular
and Metabolic Diseases, Innovative Medicines and Early Development
Biotech Unit, AstraZeneca, Pepparedsleden 1, SE-43183 Mölndal, Sweden
| | - Tamás Beke-Somfai
- Research
Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok
krt. 2, H-1117 Budapest, Hungary
| | - Anna Said Stålsmeden
- Chemistry
and Biochemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Nina Kann
- Chemistry
and Biochemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden
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28
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Welsh MA, Blackwell HE. Chemical probes of quorum sensing: from compound development to biological discovery. FEMS Microbiol Rev 2016; 40:774-94. [PMID: 27268906 DOI: 10.1093/femsre/fuw009] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2016] [Indexed: 01/20/2023] Open
Abstract
Bacteria can utilize chemical signals to coordinate the expression of group-beneficial behaviors in a method of cell-cell communication called quorum sensing (QS). The discovery that QS controls the production of virulence factors and biofilm formation in many common pathogens has driven an explosion of research aimed at both deepening our fundamental understanding of these regulatory networks and developing chemical agents that can attenuate QS signaling. The inherently chemical nature of QS makes studying these pathways with small molecule tools a complementary approach to traditional microbiology techniques. Indeed, chemical tools are beginning to yield new insights into QS regulation and provide novel strategies to inhibit QS. Here, we review the most recent advances in the development of chemical probes of QS systems in Gram-negative bacteria, with an emphasis on the opportunistic pathogen Pseudomonas aeruginosa We first describe reports of novel small molecule modulators of QS receptors and QS signal synthases. Next, in several case studies, we showcase how chemical tools have been deployed to reveal new knowledge of QS biology and outline lessons for how researchers might best target QS to combat bacterial virulence. To close, we detail the outstanding challenges in the field and suggest strategies to overcome these issues.
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Affiliation(s)
- Michael A Welsh
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA
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29
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Moore JD, Rossi FM, Welsh MA, Nyffeler KE, Blackwell HE. A Comparative Analysis of Synthetic Quorum Sensing Modulators in Pseudomonas aeruginosa: New Insights into Mechanism, Active Efflux Susceptibility, Phenotypic Response, and Next-Generation Ligand Design. J Am Chem Soc 2015; 137:14626-39. [PMID: 26491787 PMCID: PMC4665086 DOI: 10.1021/jacs.5b06728] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Quorum sensing (QS) is a chemical signaling mechanism that allows bacterial populations to coordinate gene expression in response to social and environmental cues. Many bacterial pathogens use QS to initiate infection at high cell densities. Over the past two decades, chemical antagonists of QS in pathogenic bacteria have attracted substantial interest for use both as tools to further elucidate QS mechanisms and, with further development, potential anti-infective agents. Considerable recent research has been devoted to the design of small molecules capable of modulating the LasR QS receptor in the opportunistic pathogen Pseudomonas aeruginosa. These molecules hold significant promise in a range of contexts; however, as most compounds have been developed independently, comparative activity data for these compounds are scarce. Moreover, the mechanisms by which the bulk of these compounds act are largely unknown. This paucity of data has stalled the choice of an optimal chemical scaffold for further advancement. Herein, we submit the best-characterized LasR modulators to standardized cell-based reporter and QS phenotypic assays in P. aeruginosa, and we report the first comprehensive set of comparative LasR activity data for these compounds. Our experiments uncovered multiple interesting mechanistic phenomena (including a potential alternative QS-modulatory ligand binding site/partner) that provide new, and unexpected, insights into the modes by which many of these LasR ligands act. The lead compounds, data trends, and mechanistic insights reported here will significantly aid the design of new small molecule QS inhibitors and activators in P. aeruginosa, and in other bacteria, with enhanced potencies and defined modes of action.
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Affiliation(s)
- Joseph D Moore
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Francis M Rossi
- Department of Chemistry, SUNY Cortland , Cortland, New York 13045, United States
| | - Michael A Welsh
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Kayleigh E Nyffeler
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
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30
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Design, synthesis and biological evaluation of 4-(alkyloxy)-6-methyl-2H-pyran-2-one derivatives as quorum sensing inhibitors. Bioorg Med Chem Lett 2015; 25:2913-7. [DOI: 10.1016/j.bmcl.2015.05.054] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/07/2015] [Accepted: 05/21/2015] [Indexed: 01/10/2023]
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