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Jácome-Hernández A, Desgarennes D, Guevara R, Olivares-Romero JL, Favila ME. Antifungal capabilities of gut microbial communities of three dung beetle species (Scarabaeidae: Scarabaeinae). THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2024; 111:36. [PMID: 38951264 DOI: 10.1007/s00114-024-01923-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 06/14/2024] [Accepted: 06/19/2024] [Indexed: 07/03/2024]
Abstract
Gut microbial communities are part of the regulatory array of various processes within their hosts, ranging from nutrition to pathogen control. Recent evidence shows that dung beetle's gut microbial communities release substances with antifungal activity. Because of the enormous diversity of gut microorganisms in dung beetles, there is a possibility of discovering novel compounds with antifungal properties. We tested the antifungal activity mediated by gut microbial communities of female dung beetles against nine phytopathogenic fungi strains (Colletotrichum asianum-339, C. asianum-340, C. asianum-1, C. kahawae-390, C. karstii-358, C. siamense-220, Fusarium oxysporum-ATCC338, Nectria pseudotrichia-232, Verticillium zaelandica-22). Our tests included the gut microbial communities of three species of dung beetles: Canthon cyanellus (roller beetle), Digitonthophagus gazella (burrower beetle), and Onthophagus batesi (burrower beetle), and we followed the dual confrontation protocol, i.e., we challenged each fungal strain with the microbial communities of each species of beetles in Petri dishes containing culture medium. Our results showed that gut microbial communities of the three dung beetle species exhibit antifungal activity against at least seven of the nine phytopathogenic fungal strains. The gut microbial communities of Onthophagus batesi significantly decreased the mycelial growth of the nine phytopathogenic fungi strains; the gut microbial communities of Canthon cyanellus and Digitonthophagus gazella significantly reduced the mycelial growth of seven strains. These results provide a basis for investigating novel antifungal substances within gut microbial communities of dung beetles.
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Affiliation(s)
| | - Damaris Desgarennes
- Red de Biodiversidad y Sistemática, Instituto de Ecología A.C., Xalapa, Mexico
| | - Roger Guevara
- Red de Biología Evolutiva, Instituto de Ecología A.C., Xalapa, Mexico
| | | | - Mario E Favila
- Red de Ecoetología, Instituto de Ecología A.C., Xalapa, Mexico.
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Basharat Z, Alghamdi YS, Mashraqi MM, Makkawi M, Alasmari S, Alshamrani S. Subtractive sequence-mediated therapeutic targets from the conserved gene clusters of Campylobacter hyointestinalis and computational inhibition assessment. J Biomol Struct Dyn 2024; 42:2782-2792. [PMID: 37144725 DOI: 10.1080/07391102.2023.2208229] [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: 01/19/2023] [Accepted: 04/20/2023] [Indexed: 05/06/2023]
Abstract
Campylobacter hyointestinalis is a causative agent of enteritis, proctitis, human gastroenteritis, and diarrhea. Reported transmission is from pigs to humans. Link with gastrointestinal carcinoma has also been established in non-Helicobacter pylori patients carrying this strain. The genome size of the strain LMG9260 is 1.8 MB with 1785 chromosomal and seven plasmid proteins. No therapeutic targets have been identified and reported in this bacterium. Therefore, subtractive computational screening of its genome was carried out for the purpose. In total, 31 such targets were mined and riboflavin synthase was utilized for screening natural product inhibitors against it. Among more than 30,000 screened natural compounds from the NPASS library, three (NPC472060, NPC33653, and NPC313886) were prioritized to have the potential to be developed into new antimicrobial drugs. Dynamics simulation assay along with other relevant parameters like absorption, toxicity, and distribution of the inhibiting compounds were also predicted and NPC33653 was identified as having the best drug-like properties among the prioritized compounds. Thus, it has potential to be pursued further for the inhibition of riboflavin synthesis in C. hyointestinalis for subsequent obstruction of its growth and survival.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Mutaib M Mashraqi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Najran University, Najran, Saudi Arabia
| | - Mohammed Makkawi
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Sultan Alasmari
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Saleh Alshamrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Najran University, Najran, Saudi Arabia
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3
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Tuytschaevers S, Aden L, Greene Z, Nixon C, Shaw W, Hatch D, Kumar G, Miranda RR, Hudson AO. Isolation, whole-genome sequencing, and annotation of two antibiotic-producing and antibiotic-resistant bacteria, Pantoea rodasii RIT 836 and Pseudomonas endophytica RIT 838, collected from the environment. PLoS One 2024; 19:e0293943. [PMID: 38412159 PMCID: PMC10898753 DOI: 10.1371/journal.pone.0293943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/22/2023] [Indexed: 02/29/2024] Open
Abstract
Antimicrobial resistance (AMR) is a global threat to human health since infections caused by antimicrobial-resistant bacteria are life-threatening conditions with minimal treatment options. Bacteria become resistant when they develop the ability to overcome the compounds that are meant to kill them, i.e., antibiotics. The increasing number of resistant pathogens worldwide is contrasted by the slow progress in the discovery and production of new antibiotics. About 700,000 global deaths per year are estimated as a result of drug-resistant infections, which could escalate to nearly 10 million by 2050 if we fail to address the AMR challenge. In this study, we collected and isolated bacteria from the environment to screen for antibiotic resistance. We identified several bacteria that showed resistance to multiple clinically relevant antibiotics when tested in antibiotic susceptibility disk assays. We also found that two strains, identified as Pantoea rodasii RIT 836 and Pseudomonas endophytica RIT 838 via whole genome sequencing and annotation, produce bactericidal compounds against both Gram-positive and Gram-negative bacteria in disc-diffusion inhibitory assays. We mined the two strains' whole-genome sequences to gain more information and insights into the antibiotic resistance and production by these bacteria. Subsequently, we aim to isolate, identify, and further characterize the novel antibiotic compounds detected in our assays and bioinformatics analysis.
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Affiliation(s)
- Serena Tuytschaevers
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Leila Aden
- Rochester Prep High School, Rochester, New York, United States of America
| | - Zacchaeus Greene
- Rochester Prep High School, Rochester, New York, United States of America
| | - Chanei Nixon
- Rochester Prep High School, Rochester, New York, United States of America
| | - Wade Shaw
- Rochester Prep High School, Rochester, New York, United States of America
| | - Dillan Hatch
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Girish Kumar
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Renata Rezende Miranda
- School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York, United States of America
| | - André O. Hudson
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
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Duan Y, Xu P, Ge P, Chen L, Chen Y, Kankala RK, Wang S, Chen A. NIR-responsive carrier-free nanoparticles based on berberine hydrochloride and indocyanine green for synergistic antibacterial therapy and promoting infected wound healing. Regen Biomater 2023; 10:rbad076. [PMID: 37808956 PMCID: PMC10558098 DOI: 10.1093/rb/rbad076] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/31/2023] [Accepted: 08/12/2023] [Indexed: 10/10/2023] Open
Abstract
Bacterial infections cause severe health conditions, resulting in a significant economic burden for the public health system. Although natural phytochemicals are considered promising anti-bacterial agents, they suffer from several limitations, such as poor water solubility and low bioavailability in vivo, severely restricting their wide application. Herein, we constructed a near-infrared (NIR)-responsive carrier-free berberine hydrochloride (BH, phytochemicals)/indocyanine green (ICG, photosensitizer) nanoparticles (BI NPs) for synergistic antibacterial of an infected wound. Through electrostatic interaction and π-π stacking, the hydrophobic BH and amphiphilic ICG are initially self-assembled to generate carrier-free nanoparticles. The obtained BI NPs demonstrated NIR-responsive drug release behavior and better photothermal conversion efficiency of up to 36%. In addition, BI NPs stimulated by NIR laser exhibited remarkable antibacterial activity, which realized the synergistic antibacterial treatment and promoted infected wound healing. In summary, the current research results provided a candidate strategy for self-assembling new BI NPs to treat bacterial infections synergistically.
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Affiliation(s)
- Youyu Duan
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Peiyao Xu
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Panyuan Ge
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Linfei Chen
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Ying Chen
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Ranjith Kumar Kankala
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Shibin Wang
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Aizheng Chen
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, Fujian 361021, PR China
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Zhan W, Gao G, Liu Z, Liu X, Xu L, Wang M, Xu HD, Tang R, Cao J, Sun X, Liang G. Enzymatic Self-Assembly of Adamantane-Peptide Conjugate for Combating Staphylococcus aureus Infection. Adv Healthc Mater 2023; 12:e2203283. [PMID: 36880480 DOI: 10.1002/adhm.202203283] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/28/2023] [Indexed: 03/08/2023]
Abstract
Staphylococcus aureus (S. aureus) remains a leading cause of bacterial infections. However, eradication of S. aureus infections with common antibiotics is increasingly difficult due to outbreaks of drug resistance. Therefore, new antibiotic classes and antibacterial strategies are urgently in demand. Herein, it is shown that an adamantane-peptide conjugate, upon dephosphorylation by alkaline phosphatase (ALP) constitutively expressed on S. aureus, generates fibrous assemblies in situ to combat S. aureus infection. By attaching adamantane to a phosphorylated tetrapeptide Nap-Phe-Phe-Lys-Tyr(H2 PO3 )-OH, the rationally designed adamantane-peptide conjugate Nap-Phe-Phe-Lys(Ada)-Tyr(H2 PO3 )-OH (Nap-FYp-Ada) is obtained. Upon bacterial ALP activation, Nap-FYp-Ada is dephosphorylated and self-assembles into nanofibers on the surface of S. aureus. As revealed by cell assays, the assemblies of adamantane-peptide conjugates interact with cell lipid membrane and thereby disrupt membrane integrity to kill S. aureus. Animal experiments further demonstrate the excellent potential of Nap-FYp-Ada in the treatment of S. aureus infection in vivo. This work provides an alternative approach to design antimicrobial agents.
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Affiliation(s)
- Wenjun Zhan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Ge Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Zhiyu Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Xiaoyang Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Lingling Xu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Manli Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Hai-Dong Xu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Runqun Tang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Jingyuan Cao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Xianbao Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
| | - Gaolin Liang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, P. R. China
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Gao P, Nasution AK, Yang S, Chen Z, Ono N, Kanaya S, Altaf-Ul-Amin MD. On Finding Natural Antibiotics based on TCM Formulae. Methods 2023; 214:35-45. [PMID: 37019293 DOI: 10.1016/j.ymeth.2023.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/12/2023] [Accepted: 04/01/2023] [Indexed: 04/05/2023] Open
Abstract
CONTEXT Novel kinds of antibiotics are needed to combat the emergence of antibacterial resistance. Natural products (NPs) have shown potential as antibiotic candidates. Current experimental methods are not yet capable of exploring the massive, redundant, and noise-involved chemical space of NPs. In silico approaches are needed to select NPs as antibiotic candidates. OBJECTIVE This study screens out NPs with antibacterial efficacy guided by both TCM and modern medicine and constructed a dataset aiming to serve the new antibiotic design. METHOD A knowledge-based network is proposed in this study involving NPs, herbs, the concepts of TCM, and the treatment protocols (or etiologies) of infectious in modern medicine. Using this network, the NPs candidates are screened out and compose the dataset. Feature selection of machine learning approaches is conducted to evaluate the constructed dataset and statistically validate the im- portance of all NPs candidates for different antibiotics by a classification task. RESULTS The extensive experiments prove the constructed dataset reaches a convincing classification performance with a 0.9421 weighted accuracy, 0.9324 recall, and 0.9409 precision. The further visu- alizations of sample importance prove the comprehensive evaluation for model interpretation based on medical value considerations.
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Affiliation(s)
- Pei Gao
- Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0101, Japan
| | | | - Shuo Yang
- Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0101, Japan
| | - Zheng Chen
- Osaka University, Suita, Osaka 567-0047, Japan
| | - Naoaki Ono
- Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0101, Japan
| | - Shigehiko Kanaya
- Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0101, Japan
| | - M D Altaf-Ul-Amin
- Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0101, Japan.
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Lu Y, Guan T, Wang S, Zhou C, Wang M, Wang X, Zhang K, Han X, Lin J, Tang Q, Wang C, Zhou W. Novel xanthone antibacterials: Semi-synthesis, biological evaluation, and the action mechanisms. Bioorg Med Chem 2023; 83:117232. [PMID: 36940608 DOI: 10.1016/j.bmc.2023.117232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
α-Mangostin (α-MG) has demonstrated to display potent activities against Gram-positive bacterial. However, the contribution of phenolic hydroxyl groups of α-MG to the antibacterial activity remains obscure, severely hampering selection of structure modification to develop more potential α-MG-based anti-bacterial derivatives. Herein, twenty-one α-MG derivatives are designed, synthesized and evaluated for the antibacterial activities. The structure activity relationships (SARs) reveal that the contribution of the phenolic groups ranks as C3 > C6 > C1, and the phenolic hydroxyl group at C3 is essential to the antibacterial activity. Of note, compared to the parent compound α-MG, 10a with one acetyl at C1 exhibits the higher safety profiles due to its higher selectivity and no hemolysis, and the more potent antibacterial efficacy in an animal skin abscess model. Our evidences further present that, in comparison with α-MG, 10a has a stronger ability in depolarizing membrane potentials and leads to more leakage of bacterial proteins, consistent with the results observed by transmission electron microscopy (TEM). Transcriptomics analysis demonstrates those observations possibly relate to disturbed synthesis of proteins participating in the biological process of membrane permeability and integrity. Collectively, our findings provide a valuable insight for developing α-MG-based antibacterial agents with little hemolysis and new action mechanism via structural modifications at C1.
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Affiliation(s)
- Yan Lu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; School of Pharmaceutical Sciences, South-Central University for Nationalities, 430074 Wuhan, China
| | - Ting Guan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, E. 232, University town, Waihuan Rd, Panyu, Guangzhou 510006, Guangdong, China
| | - Shaobing Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, 430074 Wuhan, China
| | - Cui Zhou
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China
| | - Meizhu Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China
| | - Xiaoyang Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Keyu Zhang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Xiangan Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China
| | - Jinchao Lin
- Metabo-Profile Biotechnology (Shanghai) Co. Ltd., 201315 Shanghai, China
| | - Qun Tang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Chunmei Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Wen Zhou
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
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Liang M, Shang L, Yu Y, Jiang Y, Bai Q, Ma J, Yang D, Sui N, Zhu Z. Ultrasound activatable microneedles for bilaterally augmented sono-chemodynamic and sonothermal antibacterial therapy. Acta Biomater 2023; 158:811-826. [PMID: 36572249 DOI: 10.1016/j.actbio.2022.12.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/04/2022] [Accepted: 12/19/2022] [Indexed: 12/25/2022]
Abstract
Chemodynamic therapy (CDT) employs Fenton catalysts to kill bacteria by converting hydrogen peroxide (H2O2) into toxic hydroxyl radical (•OH). Among them, Fenton-type metal peroxide nanoparticles fascinate nanomaterials with intriguing physiochemical properties, but research on this antibacterial agent is still in its infancy. Herein, a distinct CuO2/TiO2 heterostructure constituted of ultrasmall copper peroxide (CuO2) nanoclusters and sonosensitized ultrathin oxygen vacancy-rich porous titanium oxide (OV-TiO2) nanosheets was developed and was incorporated into microneedles for bilaterally augmented sono-chemodynamic and sonothermal antibacterial therapy. Engineering CuO2 nanoclusters on the surface of TiO2 nanosheets not only endows the Fenton catalytic activity for sono-chemodynamic therapy (SCDT), but also improves the sonodynamic and sonothermal performance of TiO2 by narrowing the bandgap of TiO2 and suppressing the recombination of electron-hole pairs. The high efficacy of this CuO2/TiO2 integrated microneedle (CTMN) patch was systematically demonstrated both in vitro and in vivo with the eliminating rate >99.9999% against multidrug resistant (MDR) pathogens in 5 min as well as accelerated wound tissue healing. This work highlights a promisingly new and efficient strategy for the development of sonosensitive and chemoreactive nanomedicine for non-antibiotic therapies. STATEMENT OF SIGNIFICANCE: Feton-type metal peroxides, a novel nanomaterial with self-supplied oxygen and hydrogen peroxide, can achieve effective antimicrobial activity in vitro. However, there is a lack of effective nanomaterial delivery systems and suitable means for in vivo activation/enhancement of antimicrobial activity during bacterial infected skin wound treatment. In this study, we designed and prepared efficient ultrasound activable microneedles that effectively addressed the deficiencies mentioned above and established a new paradigm for efficient utilization of metal peroxide nanomaterials and ultrasound based strategies. Noticeably, copper peroxide nanoclusters/oxygen vacancy-rich porous titanium oxide nanosheets (CuO2/TiO2) integrated microneedle (CTMN) patch combines advantages of both sono-chemodynamic and sonothermal antibacterial therapy, achieving one of the most instant and effective antibacterial efficacy (>99.9999% in 5 min) in vivo reported till now.
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Affiliation(s)
- Manman Liang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Limin Shang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Yixin Yu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Yujie Jiang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Qiang Bai
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Junchi Ma
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Dongqin Yang
- Department of Digestive Diseases, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Ning Sui
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China.
| | - Zhiling Zhu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China.
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Investigating Catheter-Related Infections in Southern Benin Hospitals: Identification, Susceptibility, and Resistance Genes of Involved Bacterial Strains. Microorganisms 2023; 11:microorganisms11030617. [PMID: 36985192 PMCID: PMC10057255 DOI: 10.3390/microorganisms11030617] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 03/05/2023] Open
Abstract
The use of catheters and bladder catheters in hospitals can increase the risk of bacterial infections. This study aimed to identify the bacterial strains involved in catheter-related infections (CRI) in southern Benin hospitals. The study included 407 samples, including 95 catheter tip samples and 312 urine samples collected from bladder catheters from patients on the first day and 48 h after admission. The catheter tip samples were analyzed using traditional bacterial isolation and identification methods, while the urine samples were analyzed using VITEK-2. Antibiotic sensitivity was tested using the Kirby Bauer method, and virulence and resistance genes were detected through standard PCR. The results showed a predominance of Escherichia coli (53.5%), Klebsiella pneumoniae (23.3%), and Enterobacter aerogenes (7.0%) among Gram-negative bacilli, and coagulase-negative Staphylococcus as the most identified cocci. Bacterial susceptibility to antibiotics showed variable levels of resistance, with blaTEM being detected in 42.9% of identified bacterial species, followed by blaSHV (26.2%) and blaCTX-M-15 (16.7%). The blaNDM gene was only found in three identified bacterial strains, while vanA and vanB genes were detected in 3.2% of strains with a prevalence of 55% for the mecA gene. A prevalence of 18.8% for fimH was noted for the virulence genes. In conclusion, this study highlights the importance of following proper hygiene and aseptic practices during catheterization to effectively prevent CRIs. These findings should be used to improve interventions in hospitals and reduce healthcare-associated infections in developing countries.
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An Overview on Antimicrobial Potential of Edible Terrestrial Plants and Marine Macroalgae Rhodophyta and Chlorophyta Extracts. Mar Drugs 2023; 21:md21030163. [PMID: 36976212 PMCID: PMC10058896 DOI: 10.3390/md21030163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023] Open
Abstract
Antibiotics are used to prevent and treat bacterial infections. After a prolonged use of antibiotics, it may happen that bacteria adapt to their presence, developing antibiotic resistance and bringing up health complications. Nowadays, antibiotic resistance is one of the biggest threats to global health and food security; therefore, scientists have been searching for new classes of antibiotic compounds which naturally express antimicrobial activity. In recent decades, research has been focused on the extraction of plant compounds to treat microbial infections. Plants are potential sources of biological compounds that express several biological functions beneficial for our organism, including antimicrobial activity. The high variety of compounds of natural origin makes it possible to have a great bioavailability of antibacterial molecules to prevent different infections. The antimicrobial activity of marine plants, also called seaweeds or macroalgae, for both Gram-positive and Gram-negative, and several other strains infective for humans, has been proven. The present review presents research focused on the extraction of antimicrobial compounds from red and green macroalgae (domain Eukarya, kingdom Plantae). Nevertheless, further research is needed to verify the action of macroalgae compounds against bacteria in vitro and in vivo, to be involved in the production of safe and novel antibiotics.
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11
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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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12
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Xu Z, Eichler B, Klausner EA, Duffy-Matzner J, Zheng W. Lead/Drug Discovery from Natural Resources. Molecules 2022; 27:molecules27238280. [PMID: 36500375 PMCID: PMC9736696 DOI: 10.3390/molecules27238280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/29/2022] Open
Abstract
Natural products and their derivatives have been shown to be effective drug candidates against various diseases for many years. Over a long period of time, nature has produced an abundant and prosperous source pool for novel therapeutic agents with distinctive structures. Major natural-product-based drugs approved for clinical use include anti-infectives and anticancer agents. This paper will review some natural-product-related potent anticancer, anti-HIV, antibacterial and antimalarial drugs or lead compounds mainly discovered from 2016 to 2022. Structurally typical marine bioactive products are also included. Molecular modeling, machine learning, bioinformatics and other computer-assisted techniques that are very important in narrowing down bioactive core structural scaffolds and helping to design new structures to fight against key disease-associated molecular targets based on available natural products are considered and briefly reviewed.
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Affiliation(s)
- Zhihong Xu
- Department of Chemistry and Biochemistry, Augustana University, 2001 S Summit Ave., Sioux Falls, SD 57197, USA
- Institute of Interventional & Vascular Surgery, Tongji University, Shanghai 200072, China
- Department of Pharmaceutical Sciences, South College School of Pharmacy, 400 Goody’s Lane, Knoxville, TN 37922, USA
- Correspondence: ; Tel.: +1-(605)-274-5008
| | - Barrett Eichler
- Department of Chemistry and Biochemistry, Augustana University, 2001 S Summit Ave., Sioux Falls, SD 57197, USA
| | - Eytan A. Klausner
- Department of Pharmaceutical Sciences, South College School of Pharmacy, 400 Goody’s Lane, Knoxville, TN 37922, USA
| | - Jetty Duffy-Matzner
- Department of Chemistry and Biochemistry, Augustana University, 2001 S Summit Ave., Sioux Falls, SD 57197, USA
| | - Weifan Zheng
- Biomanufacturing Research Institute and Technology Enterprise, North Carolina Central University, 1801 Fayetteville St., Durham, NC 27707, USA
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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13
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Qi Y, Hou J, Zhao Y, Song W, Wang L, Chen H, Chen G. An inhibitory effect of schisandrone on α-hemolysin expression to combat methicillin-resistant staphylococcus aureus infections. World J Microbiol Biotechnol 2022; 39:3. [PMID: 36344903 DOI: 10.1007/s11274-022-03442-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 10/14/2022] [Indexed: 11/09/2022]
Abstract
Due to increasing antibiotic resistance, targeting bacterial virulence factors is now gaining further interest as an alternative strategy to develop novel classes of anti-infective agents. The critical role of α-hemolysin (Hla), an indispensable virulence determinant, in the pathogenicity of Staphylococcus aureus renders this virulence factor an appealing target for effective therapeutic applications. Herein, we identified a natural compound schisandraone, as an effective Hla inhibitor, which could inhibit Hla production and thus hemolytic activity in a dose-dependent manner without affecting the growth of S. aureus. We also found that the addition of schisandrone could down-regulate the transcriptional levels of the hla, agrA and RNAIII and significantly alleviated Hla-mediated injury of A549 cells co-cultured with S. aureus. In vivo studies further suggested that schisandrone combined with antibiotic ceftiofur exhibited a significant therapeutic effect on S. aureus infection. These findings revealed the role of schisandrone in inhibiting the activity of Hla and we believe that it is a promising anti-virulence candidate to combat MRSA pneumonia.
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Affiliation(s)
- Yingxin Qi
- College of Life Science, Key Laboratory of Straw Biology and Utilization of the Ministry of Education Jilin Agricultural University, Changchun, China.,School of Biological and Food Engineering, Jilin Engineering Normal University, Changchun, China
| | - Juan Hou
- College of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Yicheng Zhao
- College of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China.,Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun, China
| | - Wu Song
- College of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Li Wang
- College of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Huan Chen
- Jilin Agricultural University, Changchun, China
| | - Guang Chen
- College of Life Science, Key Laboratory of Straw Biology and Utilization of the Ministry of Education Jilin Agricultural University, Changchun, China. .,School of Biological and Food Engineering, Jilin Engineering Normal University, Changchun, China.
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14
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Du X, Wang M, Hu X, Nie T, Zhu M, Zhang G, You X, Wang Y. Synthesis and biological evaluation of novel N, N'-diarylurea derivatives as potent antibacterial agents against MRSA. Bioorg Med Chem Lett 2022; 75:128975. [PMID: 36067930 DOI: 10.1016/j.bmcl.2022.128975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/21/2022] [Accepted: 08/29/2022] [Indexed: 11/02/2022]
Abstract
A series of new N, N'-diarylurea derivatives were designed and synthesized, some of which exhibited potent antibacterial activity against the drug-susceptible and drug-resistant Gram-positive strains. Especially, compounds 2c, 2g-2l showed broader antibacterial spectrum and more potent antibacterial activity (MIC = 0.30-2.72 μM) against MRSA and MRSE than the control levofloxacin (MIC = 0.69-22.14 μM). In addition, compounds 2c, 2g, 2h and 2l exhibited much better antibacterial activity (MIC = 1.29-2.86 μM) against VRE (E. faecium) than sorafenib (MIC = 275.37 μM), PK150 (MIC = 5.07-10.13 μM) and SC78 (MIC = 2.40-4.79 μM). More importantly, the low cytotoxicity of compounds on cell lines HeLa and HepG2 implied a relatively wide therapeutic window, which was of high importance for further study.
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Affiliation(s)
- Xiaonan Du
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Minghua Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Xinxin Hu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Tongying Nie
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Mei Zhu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Guoning Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China.
| | - Xuefu You
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China.
| | - Yucheng Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China.
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15
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Wang H, Sarwar MT, Tian L, Bao W, Yang H. Nanoclay Modulates Cation Occupancy in Manganese Ferrite for Catalytic Antibacterial Treatment. Inorg Chem 2022; 61:17692-17702. [DOI: 10.1021/acs.inorgchem.2c02803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hao Wang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan430074, China
- Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan430074, China
| | - Muhammad Tariq Sarwar
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan430074, China
- Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan430074, China
| | - Luyuan Tian
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan430074, China
- Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan430074, China
| | - Wenxin Bao
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan430074, China
- Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan430074, China
| | - Huaming Yang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan430074, China
- Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan430074, China
- Hunan Key Laboratory of Mineral Materials and Application, School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
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16
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Ghosh AK, Weber IT, Mitsuya H. Beyond darunavir: recent development of next generation HIV-1 protease inhibitors to combat drug resistance. Chem Commun (Camb) 2022; 58:11762-11782. [PMID: 36200462 PMCID: PMC10942761 DOI: 10.1039/d2cc04541a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
We report our recent development of a conceptually new generation of exceptionally potent non-peptidic HIV-1 protease inhibitors that displayed excellent pharmacological and drug-resistance profiles. Our X-ray structural studies of darunavir and other designed inhibitors from our laboratories led us to create a variety of inhibitors incorporating fused ring polycyclic ethers and aromatic heterocycles to promote hydrogen bonding interactions with the backbone atoms of HIV-1 protease as well as van der Waals interactions with residues in the S2 and S2' subsites. We have also incorporated specific functionalities to enhance van der Waals interactions in the S1 and S1' subsites. The combined effects of these structural templates are critical to the inhibitors' exceptional potency and drug-like properties. We highlight here our molecular design strategies to promote backbone hydrogen bonding interactions to combat drug-resistance and specific design of polycyclic ether templates to mimic peptide-like bonds in the HIV-1 protease active site. Our medicinal chemistry and drug development efforts led to the development of new generation inhibitors significantly improved over darunavir and displaying unprecedented antiviral activity against multidrug-resistant HIV-1 variants.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, IN 47907, USA.
| | - Irene T Weber
- Departments of Biology and Chemistry, Molecular Basis of Disease, Georgia State University, Atlanta, GA 30303, USA
| | - Hiroaki Mitsuya
- Departments of Hematology and Infectious Diseases, Kumamoto University School of Medicine, Kumamoto 860-8556, Japan
- Experimental Retrovirology Section, HIV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, MD 20892, USA
- Center for Clinical Sciences, National Center for Global Health and Medicine, Shinjuku, Tokyo 162-8655, Japan
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17
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K. F, C. G. A, Shyam P, Gondru R, Banothu J. 1,2,3-Triazole Linked Chalcone-Morpholine Hybrids: Synthesis, In Vitro Antibacterial Evaluation and In Silico ADMET Predictions. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2130369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Fabitha K.
- Department of Chemistry, National Institute of Technology Calicut, Kozhikode, India
| | - Arya C. G.
- Department of Chemistry, National Institute of Technology Calicut, Kozhikode, India
| | - Perugu Shyam
- Department of Biotechnology, National Institute of Technology Warangal, Warangal, India
| | - Ramesh Gondru
- Environmental Monitoring & Exposure Assessment (Air) Laboratory, ICMR-NIREH, Bhopal, India
| | - Janardhan Banothu
- Department of Chemistry, National Institute of Technology Calicut, Kozhikode, India
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18
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Fong YD, Chu JJH. Natural products as Zika antivirals. Med Res Rev 2022; 42:1739-1780. [PMID: 35593443 PMCID: PMC9540820 DOI: 10.1002/med.21891] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 04/06/2022] [Accepted: 05/04/2022] [Indexed: 12/13/2022]
Abstract
Zika virus (ZIKV) is an arbovirus belonging to the flavivirus genus and is transmitted in Aedes mosquito vectors. Since its discovery in humans in 1952 in Uganda, ZIKV has been responsible for many outbreaks in South America, Africa, and Asia. Patients infected with ZIKV are usually asymptomatic; mild symptoms include fever, joint and muscle pain, and fatigue. However, severe infections may have neurological implications, such as Guillain-Barré syndrome and fetal microcephaly. To date, there are no existing approved therapeutic drugs or vaccines against ZIKV infections; treatments mainly target the symptoms of infection. Preventive measures against mosquito breeding are the main strategy for limiting the spread of the virus. Antiviral drug research for the treatment of ZIKV infection has been rapidly developing, with many drug candidates emerging from drug repurposing studies, and compound screening. In particular, several studies have demonstrated the potential of natural products as antivirals for ZIKV infection. Hence, this paper will review recent advances in natural products in ZIKV antiviral drug discovery.
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Affiliation(s)
- Yuhui Deborah Fong
- Integrative Sciences and Engineering Programme (ISEP), NUS Graduate School (NUSGS), National University of Singapore, Singapore, Singapore
- Laboratory of Molecular RNA Virology and Antiviral Strategies, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Justin Jang Hann Chu
- Integrative Sciences and Engineering Programme (ISEP), NUS Graduate School (NUSGS), National University of Singapore, Singapore, Singapore
- Laboratory of Molecular RNA Virology and Antiviral Strategies, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Infectious Diseases Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Collaborative and Translation Unit for HFMD, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
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19
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Liao LX, Huang ZD, Wei FT, Wang WJ, Yang XL. New chromone analog and pyrrole alkaloid produced by Penicillium sclerotiorum and their antibacterial activity. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 25:1-6. [PMID: 35727201 DOI: 10.1080/10286020.2022.2084585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
A new chromone analog (1) and a new pyrrole alkaloid (2), together with four known compounds, were isolated from the endophytic fungus Penicillium sclerotiorum MPT-250 obtained from the stems of Taxus wallichiana var. chinensis (Pilger) Florin. The structural elucidation of these metabolites was performed by high-resolution mass spectrometry and NMR spectroscopy. Compounds 1 and 5 exhibited significant antibacterial activity against carbapenems-resistant Pseudomonas aeruginosa and multidrug-resistant Enterococcus faecium with an minimum inhibitory concentration (MIC) value of 3.13 μg/ml respectively.
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Affiliation(s)
- Liang-Xiu Liao
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Ze-Diao Huang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Fu-Ting Wei
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Wen-Jing Wang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Xiao-Long Yang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
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20
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Bai Q, Zhang J, Yu Y, Zhang C, Jiang Y, Yang D, Liu M, Wang L, Du F, Sui N, Zhu Z. Piezoelectric Activatable Nanozyme-Based Skin Patch for Rapid Wound Disinfection. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26455-26468. [PMID: 35647682 DOI: 10.1021/acsami.2c05114] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanozymes are promising new-generation antibacterial agents owing to their low cost, high stability, broad-spectrum activity, and minimal antimicrobial resistance. However, the inherent low catalytic activity of nanozymes tends to limit their antibacterial efficacy. Herein, a heterostructure of zinc oxide nanorod@graphdiyne nanosheets (ZnO@GDY NR) with unparallel piezocatalytic enzyme mimic activity is reported, which concurrently possesses intrinsic peroxidase-like activity and strong piezoelectric responses and effectively promotes the decomposition of hydrogen peroxide (H2O2) and generation of reactive oxygen species under ultrasound irradiation. Moreover, this piezocatalytic nanozyme exhibits almost 100% antibacterial efficacy against multidrug-resistant pathogens involving methicillin-resistant Staphylococcus aureus and Pseudomonas aeruginosa in vitro and in vivo. In addition, a piezoelectric activatable nanozyme-based skin patch is developed for rapid skin wound disinfections with satisfactory hemocompatibility and cytocompatibility. This work not only sheds light on the development of an innovative piezoelectric activatable nanozyme-based skin patch for rapid wound disinfection but also provides new insights on the engineering of piezocatalytic nanozymes for nanozyme antibacterial therapy.
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Affiliation(s)
- Qiang Bai
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Jiancheng Zhang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Yixin Yu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Chaohui Zhang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Yujie Jiang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Dongqin Yang
- Department of Digestive Diseases, Fudan University Huashan Hospital, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Manhong Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Lina Wang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Fanglin Du
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Ning Sui
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
| | - Zhiling Zhu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, Shandong 266042, China
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21
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Najmi A, Javed SA, Al Bratty M, Alhazmi HA. Modern Approaches in the Discovery and Development of Plant-Based Natural Products and Their Analogues as Potential Therapeutic Agents. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020349. [PMID: 35056662 PMCID: PMC8779633 DOI: 10.3390/molecules27020349] [Citation(s) in RCA: 109] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/21/2021] [Accepted: 12/30/2021] [Indexed: 12/12/2022]
Abstract
Natural products represents an important source of new lead compounds in drug discovery research. Several drugs currently used as therapeutic agents have been developed from natural sources; plant sources are specifically important. In the past few decades, pharmaceutical companies demonstrated insignificant attention towards natural product drug discovery, mainly due to its intrinsic complexity. Recently, technological advancements greatly helped to address the challenges and resulted in the revived scientific interest in drug discovery from natural sources. This review provides a comprehensive overview of various approaches used in the selection, authentication, extraction/isolation, biological screening, and analogue development through the application of modern drug-development principles of plant-based natural products. Main focus is given to the bioactivity-guided fractionation approach along with associated challenges and major advancements. A brief outline of historical development in natural product drug discovery and a snapshot of the prominent natural drugs developed in the last few decades are also presented. The researcher’s opinions indicated that an integrated interdisciplinary approach utilizing technological advances is necessary for the successful development of natural products. These involve the application of efficient selection method, well-designed extraction/isolation procedure, advanced structure elucidation techniques, and bioassays with a high-throughput capacity to establish druggability and patentability of phyto-compounds. A number of modern approaches including molecular modeling, virtual screening, natural product library, and database mining are being used for improving natural product drug discovery research. Renewed scientific interest and recent research trends in natural product drug discovery clearly indicated that natural products will play important role in the future development of new therapeutic drugs and it is also anticipated that efficient application of new approaches will further improve the drug discovery campaign.
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Affiliation(s)
- Asim Najmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia; (A.N.); (M.A.B.); (H.A.A.)
| | - Sadique A. Javed
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia; (A.N.); (M.A.B.); (H.A.A.)
- Correspondence:
| | - Mohammed Al Bratty
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia; (A.N.); (M.A.B.); (H.A.A.)
| | - Hassan A. Alhazmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia; (A.N.); (M.A.B.); (H.A.A.)
- Substance Abuse and Toxicology Research Centre, Jazan University, Jazan 45142, Saudi Arabia
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22
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Yang M, Zhang J, Wei Y, Zhang J, Tao C. Recent advances in metal-organic framework-based materials for anti-staphylococcus aureus infection. NANO RESEARCH 2022; 15:6220-6242. [PMID: 35578616 PMCID: PMC9094125 DOI: 10.1007/s12274-022-4302-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/04/2022] [Accepted: 03/07/2022] [Indexed: 05/03/2023]
Abstract
The rapid spread of staphylococcus aureus (S. aureus) causes an increased morbidity and mortality, as well as great economic losses in the world. Anti-S. aureus infection becomes a major challenge for clinicians and nursing professionals to address drug resistance. Hence, it is urgent to explore high efficiency, low toxicity, and environmental-friendly methods against S. aureus. Metal-organic frameworks (MOFs) represent great potential in treating S. aureus infection due to the unique features of MOFs including tunable chemical constitute, open crystalline structure, and high specific surface area. Especially, these properties endow MOF-based materials outstanding antibacterial effect, which can be mainly attributed to the continuously released active components and the exerted catalytic activity to fight bacterial infection. Herein, the structural characteristics of MOFs and evaluation method of antimicrobial activity are briefly summarized. Then we systematically give an overview on their recent progress on antibacterial mechanisms, metal ion sustained-release system, controlled delivery system, catalytic system, and energy conversion system based on MOF materials. Finally, suggestions and direction for future research to develop and mechanism understand MOF-based materials are discussed in antibacterial application.
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Affiliation(s)
- Mei Yang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jin Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065 China
| | - Yinhao Wei
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jie Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065 China
| | - Chuanmin Tao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041 China
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23
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Wu Z, Li Y, Zhang L, Ding Z, Shi G. Microbial production of small peptide: pathway engineering and synthetic biology. Microb Biotechnol 2021; 14:2257-2278. [PMID: 33459516 PMCID: PMC8601181 DOI: 10.1111/1751-7915.13743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 12/12/2020] [Accepted: 12/13/2020] [Indexed: 01/14/2023] Open
Abstract
Small peptides are a group of natural products with low molecular weights and complex structures. The diverse structures of small peptides endow them with broad bioactivities and suggest their potential therapeutic use in the medical field. The remaining challenge is methods to address the main limitations, namely (i) the low amount of available small peptides from natural sources, and (ii) complex processes required for traditional chemical synthesis. Therefore, harnessing microbial cells as workhorse appears to be a promising approach to synthesize these bioactive peptides. As an emerging engineering technology, synthetic biology aims to create standard, well-characterized and controllable synthetic systems for the biosynthesis of natural products. In this review, we describe the recent developments in the microbial production of small peptides. More importantly, synthetic biology approaches are considered for the production of small peptides, with an emphasis on chassis cells, the evolution of biosynthetic pathways, strain improvements and fermentation.
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Affiliation(s)
- Zhiyong Wu
- Key Laboratory of Industrial BiotechnologyMinistry of EducationSchool of BiotechnologyJiangnan UniversityWuxiJiangsu Province214122China
- National Engineering Laboratory for Cereal Fermentation TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
- Jiangsu Provisional Research Center for Bioactive Product Processing TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
| | - Youran Li
- Key Laboratory of Industrial BiotechnologyMinistry of EducationSchool of BiotechnologyJiangnan UniversityWuxiJiangsu Province214122China
- National Engineering Laboratory for Cereal Fermentation TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
- Jiangsu Provisional Research Center for Bioactive Product Processing TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
| | - Liang Zhang
- Key Laboratory of Industrial BiotechnologyMinistry of EducationSchool of BiotechnologyJiangnan UniversityWuxiJiangsu Province214122China
- National Engineering Laboratory for Cereal Fermentation TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
- Jiangsu Provisional Research Center for Bioactive Product Processing TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
| | - Zhongyang Ding
- Key Laboratory of Industrial BiotechnologyMinistry of EducationSchool of BiotechnologyJiangnan UniversityWuxiJiangsu Province214122China
- National Engineering Laboratory for Cereal Fermentation TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
- Jiangsu Provisional Research Center for Bioactive Product Processing TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
| | - Guiyang Shi
- Key Laboratory of Industrial BiotechnologyMinistry of EducationSchool of BiotechnologyJiangnan UniversityWuxiJiangsu Province214122China
- National Engineering Laboratory for Cereal Fermentation TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
- Jiangsu Provisional Research Center for Bioactive Product Processing TechnologyJiangnan University1800 Lihu AvenueWuxiJiangsu Province214122China
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Jayawardene KLTD, Palombo EA, Boag PR. Natural Products Are a Promising Source for Anthelmintic Drug Discovery. Biomolecules 2021; 11:1457. [PMID: 34680090 PMCID: PMC8533416 DOI: 10.3390/biom11101457] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 12/23/2022] Open
Abstract
Parasitic nematodes infect almost all forms of life. In the human context, parasites are one of the major causative factors for physical and intellectual growth retardation in the developing world. In the agricultural setting, parasites have a great economic impact through a reduction in livestock performance or control cost. The main method of controlling these devastating conditions is the use of anthelmintic drugs. Unfortunately, there are only a few anthelmintic drug classes available in the market and significant resistance has developed in most of the parasitic species of livestock. Therefore, development of new anthelmintics with different modes of action is critical for sustainable parasitic control in the future. The drug development pipeline is broadly limited to two types of molecules, namely synthetic compounds and natural plant products. Compared to synthetic compounds, natural products are highly diverse, and many have historically proven valuable in folk medicine to treat various gastrointestinal ailments. This review focus on the use of traditional knowledge-based plant extracts in the development of new therapeutic leads, the approaches used as screening techniques, and common bottlenecks and opportunities in plant-based anthelmintic drug discovery.
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Affiliation(s)
- K. L. T. Dilrukshi Jayawardene
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia;
- Development and Stem Cells Program, Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3800, Australia
| | - Enzo A. Palombo
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia
| | - Peter R. Boag
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia;
- Development and Stem Cells Program, Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3800, Australia
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Nong W, Wu J, Ghiladi RA, Guan Y. The structural appeal of metal–organic frameworks in antimicrobial applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214007] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Shaligram S, Narwade NP, Kumbhare SV, Bordoloi M, Tamuli KJ, Nath S, Parimelazhagan T, Patil VS, Kapley A, Pawar SP, Dhotre DP, Muddeshwar MG, Purohit HJ, Shouche YS. Integrated Genomic and Functional Characterization of the Anti-diabetic Potential of Arthrobacter sp. SW1. Curr Microbiol 2021; 78:2577-2588. [PMID: 33983483 DOI: 10.1007/s00284-021-02523-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 04/28/2021] [Indexed: 11/29/2022]
Abstract
For decades, bacterial natural products have served as valuable resources for developing novel drugs to treat several human diseases. Recent advancements in the integrative approach of using genomic and functional tools have proved beneficial in obtaining a comprehensive understanding of these biomolecules. This study presents an in-depth characterization of the anti-diabetic activity exhibited by a bacterial isolate SW1, isolated from an effluent treatment plant. As a primary screening, we assessed the isolate for its potential to inhibit alpha-amylase and alpha-glucosidase enzymes. Upon confirmation, we further utilized LC-MS, ESI-MS/MS, and NMR spectroscopy to identify and characterize the biomolecule. These efforts were coupled with the genomic assessment of the biosynthetic gene cluster involved in the anti-diabetic compound production. Our investigation discovered that the isolate SW1 inhibited both α-amylase and α-glucosidase activity. The chemical analysis suggested the production of acarbose, an anti-diabetic biomolecule, which was further confirmed by the presence of biosynthetic gene cluster "acb" in the genome. Our in-depth chemical characterization and genome mining approach revealed the potential of bacteria from an unconventional niche, an effluent treatment plant. To the best of our knowledge, it is one of the first few reports of acarbose production from the genus Arthrobacter.
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Affiliation(s)
- Shraddha Shaligram
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India.
| | - Nitin P Narwade
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India
| | - Shreyas V Kumbhare
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India
| | - Manobjyoti Bordoloi
- Chemical Sciences and Technology Division, CSIR North East Institute of Science & Technology, Jorhat, Assam, 785006, India.
| | - Kashyap J Tamuli
- Chemical Sciences and Technology Division, CSIR North East Institute of Science & Technology, Jorhat, Assam, 785006, India
| | - Shyamalendu Nath
- Chemical Sciences and Technology Division, CSIR North East Institute of Science & Technology, Jorhat, Assam, 785006, India
| | - T Parimelazhagan
- Department of Botany, Bioprospecting Laboratory, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Vikas S Patil
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India
| | - Atya Kapley
- Environmental Biotechnology and Genomics Division, National Environmental Engineering Research Institute, CSIR-NEERI, Nehru Marg, Nagpur, 440020, India
| | - Shrikant P Pawar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India
| | - Dhiraj P Dhotre
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India
| | - M G Muddeshwar
- Department of Biochemistry, Government Medical College, Nagpur, Maharashtra, 440009, India
| | - Hemant J Purohit
- Environmental Biotechnology and Genomics Division, National Environmental Engineering Research Institute, CSIR-NEERI, Nehru Marg, Nagpur, 440020, India
| | - Yogesh S Shouche
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Central Tower, Sai Trinity Complex, Pashan, Pune, 411021, India
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Porras G, Chassagne F, Lyles JT, Marquez L, Dettweiler M, Salam AM, Samarakoon T, Shabih S, Farrokhi DR, Quave CL. Ethnobotany and the Role of Plant Natural Products in Antibiotic Drug Discovery. Chem Rev 2021; 121:3495-3560. [PMID: 33164487 PMCID: PMC8183567 DOI: 10.1021/acs.chemrev.0c00922] [Citation(s) in RCA: 138] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The crisis of antibiotic resistance necessitates creative and innovative approaches, from chemical identification and analysis to the assessment of bioactivity. Plant natural products (NPs) represent a promising source of antibacterial lead compounds that could help fill the drug discovery pipeline in response to the growing antibiotic resistance crisis. The major strength of plant NPs lies in their rich and unique chemodiversity, their worldwide distribution and ease of access, their various antibacterial modes of action, and the proven clinical effectiveness of plant extracts from which they are isolated. While many studies have tried to summarize NPs with antibacterial activities, a comprehensive review with rigorous selection criteria has never been performed. In this work, the literature from 2012 to 2019 was systematically reviewed to highlight plant-derived compounds with antibacterial activity by focusing on their growth inhibitory activity. A total of 459 compounds are included in this Review, of which 50.8% are phenolic derivatives, 26.6% are terpenoids, 5.7% are alkaloids, and 17% are classified as other metabolites. A selection of 183 compounds is further discussed regarding their antibacterial activity, biosynthesis, structure-activity relationship, mechanism of action, and potential as antibiotics. Emerging trends in the field of antibacterial drug discovery from plants are also discussed. This Review brings to the forefront key findings on the antibacterial potential of plant NPs for consideration in future antibiotic discovery and development efforts.
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Affiliation(s)
- Gina Porras
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - François Chassagne
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - James T. Lyles
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - Lewis Marquez
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, 615 Michael St., Whitehead 115, Atlanta, Georgia 30322
| | - Micah Dettweiler
- Department of Dermatology, Emory University, 615 Michael St., Whitehead 105L, Atlanta, Georgia 30322
| | - Akram M. Salam
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, 615 Michael St., Whitehead 115, Atlanta, Georgia 30322
| | - Tharanga Samarakoon
- Emory University Herbarium, Emory University, 1462 Clifton Rd NE, Room 102, Atlanta, Georgia 30322
| | - Sarah Shabih
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - Darya Raschid Farrokhi
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - Cassandra L. Quave
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
- Emory University Herbarium, Emory University, 1462 Clifton Rd NE, Room 102, Atlanta, Georgia 30322
- Department of Dermatology, Emory University, 615 Michael St., Whitehead 105L, Atlanta, Georgia 30322
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, 615 Michael St., Whitehead 115, Atlanta, Georgia 30322
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Xu M, Li L, Hu Q. The recent progress in photothermal-triggered bacterial eradication. Biomater Sci 2021; 9:1995-2008. [PMID: 33564803 DOI: 10.1039/d0bm02057e] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Increasing evidence suggested that bacterial infection diseases posed a great threat to human health and became the leading cause of mortality. However, the abuse of antibiotics and their residues in the environment result in the emergence and prevalence of drug-resistant bacteria. Photothermal therapy (PTT) has received considerable attention owing to its noninvasiveness, and proved to be promising in preventing bacterial infection diseases. In this review, we first surveyed the recent progress of PTT-based responsive targeting strategies for bacterial killing. We then highlighted the PTT-based smart designs of bio-films, hydrogels and synergistic methods for treating bacterial infections. Existing challenges and perspectives are also discussed to inspire the future development of a PTT-based platform for the efficient therapy of bacterial infections.
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Affiliation(s)
- Minjie Xu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China.
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Saidin S, Jumat MA, Mohd Amin NAA, Saleh Al-Hammadi AS. Organic and inorganic antibacterial approaches in combating bacterial infection for biomedical application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111382. [PMID: 33254989 DOI: 10.1016/j.msec.2020.111382] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/06/2020] [Accepted: 08/07/2020] [Indexed: 02/01/2023]
Abstract
In spite of antibiotics, antibacterial agents or specifically known as antiseptics are actively explored for the prevention of infection-associated medical devices. Antibacterial agents are introduced to overcome the complication of bacterial resistance which devoted by antibiotics. It can be classified into inorganic and organic, that prominently have impacted bacterial retardation in their own killing mechanism patterns. Therefore, this review paper aimed to provide information on most common used inorganic and organic antibacterial agents which have potential to be utilized in biomedical applications, thus, classifying the trends of antibacterial mechanism on Gram-negative and Gram-positive bacteria. In the beginning, infectious diseases and associated biomedical infections were stated to expose current infection scenarios on medical devices. The general view, application, susceptible bacteria and activation mechanism of inorganic (silver, copper, gold and zinc) and organic (chlorhexidine, triclosan, polyaniline and polyethylenimine) antibacterial agents that are widely proposed for biomedical area, were then gathered and reviewed. In the latter part of the study, the intact mechanisms of inorganic and organic antibacterial agents in retarding bacterial growth were classified and summarized based on its susceptibility on Gram-negative and Gram-positive bacteria. Most of inorganic antibacterial agents are in the form of metal, which release its ions to retard prominently Gram-negative bacteria. While organic antibacterial agents are susceptible to Gram-positive bacteria through organelle modification and disturbance of bio-chemical pathway. However, the antibacterial effects of each antibacterial agent are also depending on its effective mechanism and the species of bacterial strain. These compilation reviews and classification mechanisms are beneficial to assist the selection of antibacterial agents to be incorporated on/within biomaterials, based on its susceptible bacteria. Besides, the combination of several antibacterial agents with different susceptibilities will cover a wide range of antibacterial spectrum.
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Affiliation(s)
- Syafiqah Saidin
- School of Biomedical Engineering & Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; IJN-UTM Cardiovascular Engineering Centre, Institute for Human Centred Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
| | - Mohamad Amin Jumat
- School of Biomedical Engineering & Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Nur Ain Atiqah Mohd Amin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Abdullah Sharaf Saleh Al-Hammadi
- School of Biomedical Engineering & Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
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Fan T, Guo W, Shao T, Zhou W, Hu P, Liu M, Chen Y, Yi Z. Design, synthesis and evaluation of phenylthiazole and phenylthiophene pyrimidindiamine derivatives targeting the bacterial membrane. Eur J Med Chem 2020; 190:112141. [PMID: 32078862 DOI: 10.1016/j.ejmech.2020.112141] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 01/17/2023]
Abstract
As the continuous rise in the incidence of antibiotic resistance, it is urgent to develop novel chemical scaffolds with antibacterial activities to control the spread of resistance to conventional antibiotics. In this study, a series of phenylthiazole and phenylthiophene pyrimidindiamine derivatives were designed and synthesized by modifying the hit compound (N2-isobutyl-N4-((4-methyl-2-phenylthiazol-5-yl)methyl) pyrimidine-2,4-diamine) and their antibacterial activities were evaluated both in vitro and in vivo. Among the tested compounds, compound 14g (N4-((5-(3-bromophenyl)thiophen-2-yl)methyl)-N2-isobutylpyrimidine-2,4-diamine) displayed the best antibacterial activities, which was not only capable of inhibiting E. coli and S. aureus growth at concentrations as low as 2 and 3 μg/mL in vitro, but also efficacious in a mice model of bacteremia in vivo. Unlike conventional antibiotics, compound 14g was elucidated to mainly destroy the bacterial cell membrane, with the dissipation of membrane potential and leakage of contents, ultimately leading to cell death. The destruction of cell structure is challenging to induce bacterial resistance, which suggested that compound 14g may be a kind of promising alternatives to antibiotics against bacteria.
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Affiliation(s)
- Tingting Fan
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China; Changzhi Medical College, Changzhi, 046000, Shanxi, China
| | - Weikai Guo
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China
| | - Ting Shao
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China
| | - Wenbo Zhou
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China
| | - Pan Hu
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China
| | - Mingyao Liu
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China
| | - Yihua Chen
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China.
| | - Zhengfang Yi
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241, Shanghai, China.
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Banasiuk R, Krychowiak M, Swigon D, Tomaszewicz W, Michalak A, Chylewska A, Ziabka M, Lapinski M, Koscielska B, Narajczyk M, Krolicka A. Carnivorous plants used for green synthesis of silver nanoparticles with broad-spectrum antimicrobial activity. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.11.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Managing urinary tract infections through phage therapy: a novel approach. Folia Microbiol (Praha) 2019; 65:217-231. [PMID: 31494814 DOI: 10.1007/s12223-019-00750-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/27/2019] [Indexed: 12/21/2022]
Abstract
Upsurge in the instances of antibiotic-resistant uropathogenic Escherichia .coli (UPECs) strains has repositioned the attention of researchers towards a century old antimicrobial approach popularly known as phage therapy. Rise of extended spectrum beta lactamase (ESBL) and biofilm producing strains has added another step of hurdle in treatment of uropathogens with conventional antibiotics, thus providing a further impetus for search for exploring new therapeutic measures. In this direction, bacteriophages, commonly called phages, are recently being considered as potential alternatives for treatment of UPECs. Phages are the tiniest form of viruses which are ubiquitous in nature and highly specific for their host. This review discusses the possible ways of using natural phages, genetically engineered phages, and phage lytic enzymes (PLEs) as an alternative antimicrobial treatment for urinary tract infections. The review also sheds light on the synergistic use of conventional antibiotics with phages or PLEs for treatment of uropathogens. These methods of using phages and their derivatives, alone or in combination with antibiotics, have proved fruitful so far in in vitro studies. However, in vivo studies are required to make them accessible for human use. The present review is a concerted effort towards putting together all the information available on the subject.
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Strategies in anti-Mycobacterium tuberculosis drug discovery based on phenotypic screening. J Antibiot (Tokyo) 2019; 72:719-728. [PMID: 31292530 PMCID: PMC6760628 DOI: 10.1038/s41429-019-0205-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 06/05/2019] [Accepted: 06/11/2019] [Indexed: 11/20/2022]
Abstract
The rise of multi- and extensively drug-resistant Mycobacterium tuberculosis (M. tb) strains and co-infection with human immunodeficiency virus has escalated the need for new anti-M. tb drugs. Numerous challenges associated with the M. tb, in particular slow growth and pathogenicity level 3, discouraged use of this organism in past primary screening efforts. From current knowledge of the physiology and drug susceptibility of mycobacteria in general and M. tb specifically, it can be assumed that many potentially useful drug leads were missed by failing to screen directly against this pathogen. This review discusses recent high-throughput phenotypic screening strategies for anti-M. tb drug discovery. Emphasis is placed on prioritization of hits, including their extensive biological and chemical profiling, as well as the development status of promising drug candidates discovered with phenotypic screening.
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Ribeiro da Cunha B, Fonseca LP, Calado CRC. Antibiotic Discovery: Where Have We Come from, Where Do We Go? Antibiotics (Basel) 2019; 8:antibiotics8020045. [PMID: 31022923 PMCID: PMC6627412 DOI: 10.3390/antibiotics8020045] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 04/19/2019] [Accepted: 04/22/2019] [Indexed: 12/15/2022] Open
Abstract
Given the increase in antibiotic-resistant bacteria, alongside the alarmingly low rate of newly approved antibiotics for clinical usage, we are on the verge of not having effective treatments for many common infectious diseases. Historically, antibiotic discovery has been crucial in outpacing resistance and success is closely related to systematic procedures—platforms—that have catalyzed the antibiotic golden age, namely the Waksman platform, followed by the platforms of semi-synthesis and fully synthetic antibiotics. Said platforms resulted in the major antibiotic classes: aminoglycosides, amphenicols, ansamycins, beta-lactams, lipopeptides, diaminopyrimidines, fosfomycins, imidazoles, macrolides, oxazolidinones, streptogramins, polymyxins, sulphonamides, glycopeptides, quinolones and tetracyclines. During the genomics era came the target-based platform, mostly considered a failure due to limitations in translating drugs to the clinic. Therefore, cell-based platforms were re-instituted, and are still of the utmost importance in the fight against infectious diseases. Although the antibiotic pipeline is still lackluster, especially of new classes and novel mechanisms of action, in the post-genomic era, there is an increasingly large set of information available on microbial metabolism. The translation of such knowledge into novel platforms will hopefully result in the discovery of new and better therapeutics, which can sway the war on infectious diseases back in our favor.
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Affiliation(s)
- Bernardo Ribeiro da Cunha
- Institute for Bioengineering and Biosciences (IBB), Instituto Superior Técnico (IST), Universidade de Lisboa (UL); Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Luís P Fonseca
- Institute for Bioengineering and Biosciences (IBB), Instituto Superior Técnico (IST), Universidade de Lisboa (UL); Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Cecília R C Calado
- Departamento de Engenharia Química, Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa (IPL); R. Conselheiro Emídio Navarro 1, 1959-007 Lisboa, Portugal.
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Synthesis and biological evaluation of 7-substituted cycloberberine derivatives as potent antibacterial agents against MRSA. Eur J Med Chem 2019; 168:283-292. [PMID: 30825723 DOI: 10.1016/j.ejmech.2019.02.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 02/19/2019] [Indexed: 11/22/2022]
Abstract
A series of new 7-substituted cycloberberine (CBBR) derivatives were synthesized and evaluated for their antibacterial activities against Gram-positive pathogens, taking CBBR as the lead. The SAR revealed that the introduction of a substituent at the C7 position resulted in a potency against both the reference Gram-positive bacteria and MDR clinical isolates, much higher than that of CBBR. Compound 1f with a 7-phenyl group exhibited higher activities against MRSA and VRE than that of vancomycin, with MIC values of 1-8 μg/mL. Its rapid bactericidal action against MRSA was further confirmed in time-kill study. The preliminary mechanism study indicated that 1f might target bacterial DNA Topo IV ParE subunit, indicating a mode of action distinct from the currently used antibacterial drugs such as quinolones. These results supplemented and enriched the SAR of its kind, and provided powerful information for developing these compounds into a novel class of antibacterial candidates against MRSA.
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Secondary Metabolites of Endophytic Actinomycetes: Isolation, Synthesis, Biosynthesis, and Biological Activities. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 108 2019; 108:207-296. [DOI: 10.1007/978-3-030-01099-7_3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Danilovich ME, Sánchez LA, Acosta F, Delgado OD. Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes. Polar Biol 2018. [DOI: 10.1007/s00300-018-2295-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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Fahmy SA, Mamdouh W. Garlic oil-loaded PLGA nanoparticles with controllable size and shape and enhanced antibacterial activities. J Appl Polym Sci 2018. [DOI: 10.1002/app.46133] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, School of Sciences and Engineering; The American University in Cairo, AUC Avenue, P.O. Box 74; New Cairo 11835 Egypt
| | - Wael Mamdouh
- Department of Chemistry, School of Sciences and Engineering; The American University in Cairo, AUC Avenue, P.O. Box 74; New Cairo 11835 Egypt
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Wu J, Liu S, Wang H. Invasive fungi-derived defensins kill drug-resistant bacterial pathogens. Peptides 2018; 99:82-91. [PMID: 29174563 DOI: 10.1016/j.peptides.2017.11.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/17/2017] [Accepted: 11/20/2017] [Indexed: 01/25/2023]
Abstract
Fungi-derived defensins are a class of antimicrobial peptides with therapeutic potential due to their high antibacterial efficacy and low toxicity. Based on the genomic strategy, we have identified 68 fungal defensin-like peptides (fDLPs) in five new genera, including Trichosporon, Apophysomyces, Lichtheimia, Beauveria and Scedosporium and characterized a new synthetic defensin (scedosporisin) from an invasive fungus. It was active against Gram-positive bacteria but not active against negative bacteria. Importantly, it killed several clinical resistant isolates such as methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococci at low molecular concentrations. Scedosporisin showed low hemolysis and cytotoxicity and high serum stability. The killing kinetics of scedosporisin-2 against a clinical isolate of MRSA showed that it killed the bacteria more rapidly than that of vancomycin. Homology modeling analysis show that scedosporisin adopted a typical cysteine stabilized α-helical and β-sheet fold with a local hydrophobic patch. Scedosporisin significantly improved the survival rate of mice in the peritonitis model. This work has greatly expanded the library of fDLPs, and successfully selected leading molecules for antimicrobial drug reserves.
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Affiliation(s)
- Jiajia Wu
- Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
| | - Shijie Liu
- Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
| | - Hao Wang
- Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China.
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40
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How to Study Antimicrobial Activities of Plant Extracts: A Critical Point of View. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2018. [DOI: 10.1007/978-3-319-67045-4_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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41
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Auckloo BN, Pan C, Akhter N, Wu B, Wu X, He S. Stress-Driven Discovery of Novel Cryptic Antibiotics from a Marine Fungus Penicillium sp. BB1122. Front Microbiol 2017; 8:1450. [PMID: 28824581 PMCID: PMC5540946 DOI: 10.3389/fmicb.2017.01450] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/17/2017] [Indexed: 11/13/2022] Open
Abstract
Standard laboratory cultures have long been known to hinder activation of specific gene clusters which in turn hamper production of secondary metabolites with unique properties due to lack of innovation or the inability to trigger cryptic gene clusters’ expression. Due to challenges related to the avoidance of the isolation of replicated metabolites, resistance-developing pathogens are to be addressed by the scientific community worldwide in order to progress with novel and potent compounds which could further be developed in the future for pharmaceutical usage. This study reports the isolation of novel cryptic antibiotics from a marine fungus Penicillium sp. BB1122 collected from Zhoushan coast by applying the “metal-stress” strategy, here referring to the heavy metal cobalt (6 mM). High-performance liquid chromatography-guided isolation of four novel and four known compounds belonging to the polyketide class has been carried out where their relative as well as absolute configurations have been determined using spectroscopic analysis techniques as well as by the comparison of theoretically calculated ECD spectrum and the experimental ECD spectrum, respectively. The structures of novel compounds 7 and 8 represent the first example of 2,5-dioxabicyclo[2.2.1]heptane pyrone backbone bearing a migrated polyene chain. The novel compounds 7, 8, and 5 exhibited impressive antibiotic properties against methicillin resistant Staphylococcus aureus (MRSA) with MIC value of around 0.5 and 1 μg/mL, respectively. Moreover, the new compounds 1, 7, and 8 displayed potent antibiotic activities with MIC values of around 4 μg/mL against the pathogenic Pseudomonas aeruginosa. Moreover, the MBC of the different potent compounds ranged from 1 to 128 μg/mL against MRSA, P. aeruginosa, and Klebsiella pneumoniae. In addition, the cytotoxic activities were also evaluated where new antibiotics 7 and 8 were not obviously harmful toward normal liver cell lines LO2, showing IC50 values above 100 μg/mL. As a consequence, the results from this study unveiled that cobalt stress is an effective strategy to discover novel antibiotics from microorganisms.
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Affiliation(s)
| | | | | | - Bin Wu
- Ocean College, Zhejiang UniversityHangzhou, China
| | - Xiaodan Wu
- Center of Analysis and Measurement, Zhejiang UniversityHangzhou, China
| | - Shan He
- Laboratory of Marine Natural Products, School of Marine Sciences, Ningbo UniversityNingbo, China
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42
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Sokovic M, Ciric A, Glamoclija J, Skaltsa H. Biological Activities of Sesquiterpene Lactones Isolated from the Genus Centaurea L. (Asteraceae). Curr Pharm Des 2017; 23:2767-2786. [DOI: 10.2174/1381612823666170215113927] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/07/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Marina Sokovic
- Institute for Biological Research, “Siniša Stanković”, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Ana Ciric
- Department of Plant Physiology, Mycological Laboratory, Institute for Biological Research, University of Belgrade, Bulevar despota Stefana 142, 11 000 Belgrade, Serbia
| | - Jasmina Glamoclija
- Department of Plant Physiology, Mycological Laboratory, Institute for Biological Research, University of Belgrade, Bulevar despota Stefana 142, 11 000 Belgrade, Serbia
| | - Helen Skaltsa
- National & Kapodistrian University of Athens, School of Pharmacy, Department of Pharmacognosy and Chemistry of Natural Products, Panepistimiopolis, Zografou, 157 71, Athens, Greece
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43
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Picconi P, Hind C, Jamshidi S, Nahar K, Clifford M, Wand ME, Sutton JM, Rahman KM. Triaryl Benzimidazoles as a New Class of Antibacterial Agents against Resistant Pathogenic Microorganisms. J Med Chem 2017. [PMID: 28650661 DOI: 10.1021/acs.jmedchem.7b00108] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A new class of nontoxic triaryl benzimidazole compounds, derived from existing classes of DNA minor groove binders, were designed, synthesized, and evaluated for their antibacterial activity against multidrug resistant (MDR) Gram-positive and Gram-negative species. Molecular modeling experiments suggest that the newly synthesized class cannot be accommodated within the minor groove of DNA due to a change in the shape of the molecules. Compounds 8, 13, and 14 were found to be the most active of the series, with MICs in the range of 0.5-4 μg/mL against the MDR Staphylococci and Enterococci species. Compound 13 showed moderate activity against the MDR Gram-negative strains, with MICs in the range of 16-32 μg/mL. Active compounds showed a bactericidal mode of action, and a mechanistic study suggested the inhibition of bacterial gyrase as the mechanism of action (MOA) of this chemical class. The MOA was further supported by the molecular modeling study.
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Affiliation(s)
- Pietro Picconi
- Institute of Pharmaceutical Science, King's College London , London SE1 1DB, U.K
| | - Charlotte Hind
- National Infections Service, Porton Down, Public Health England , Salisbury SP4 0JG, Wiltshire U.K
| | - Shirin Jamshidi
- Institute of Pharmaceutical Science, King's College London , London SE1 1DB, U.K
| | - Kazi Nahar
- Institute of Pharmaceutical Science, King's College London , London SE1 1DB, U.K
| | - Melanie Clifford
- National Infections Service, Porton Down, Public Health England , Salisbury SP4 0JG, Wiltshire U.K
| | - Matthew E Wand
- National Infections Service, Porton Down, Public Health England , Salisbury SP4 0JG, Wiltshire U.K
| | - J Mark Sutton
- National Infections Service, Porton Down, Public Health England , Salisbury SP4 0JG, Wiltshire U.K
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Singh SB, Young K, Silver LL. What is an “ideal” antibiotic? Discovery challenges and path forward. Biochem Pharmacol 2017; 133:63-73. [DOI: 10.1016/j.bcp.2017.01.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 01/09/2017] [Indexed: 01/24/2023]
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45
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The antibiotic resistance crisis, with a focus on the United States. J Antibiot (Tokyo) 2017; 70:520-526. [PMID: 28246379 DOI: 10.1038/ja.2017.30] [Citation(s) in RCA: 268] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/29/2017] [Accepted: 01/30/2017] [Indexed: 02/06/2023]
Abstract
Beginning with the discovery of penicillin by Alexander Fleming in the late 1920s, antibiotics have revolutionized the field of medicine. They have saved millions of lives each year, alleviated pain and suffering, and have even been used prophylactically for the prevention of infectious diseases. However, we have now reached a crisis where many antibiotics are no longer effective against even the simplest infections. Such infections often result in an increased number of hospitalizations, more treatment failures and the persistence of drug-resistant pathogens. Of particular concern are organisms such as methicillin-resistant Staphylococcus aureus, Clostridium difficile, multidrug and extensively drug-resistant Mycobacterium tuberculosis, Neisseria gonorrhoeae, carbapenem-resistant Enterobacteriaceae and bacteria that produce extended spectrum β-lactamases, such as Escherichia coli. To make matters worse, there has been a steady decline in the discovery of new and effective antibiotics for a number of reasons. These include increased costs, lack of adequate support from the government, poor returns on investment, regulatory hurdles and pharmaceutical companies that have simply abandoned the antibacterial arena. Instead, many have chosen to focus on developing drugs that will be used on a chronic basis, which will offer a greater profit and more return on investment. Therefore, there is now an urgent need to develop new and useful antibiotics to avoid returning to the 'pre-antibiotic era'. Some potential opportunities for antibiotic discovery include better economic incentives, genome mining, rational metabolic engineering, combinatorial biosynthesis and further exploration of the earth's biodiversity.
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46
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Singh SB. Discovery and development of kibdelomycin, a new class of broad-spectrum antibiotics targeting the clinically proven bacterial type II topoisomerase. Bioorg Med Chem 2016; 24:6291-6297. [DOI: 10.1016/j.bmc.2016.04.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/19/2016] [Accepted: 04/21/2016] [Indexed: 10/21/2022]
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Kumar R, Lu Y, Elliott AG, Kavanagh AM, Cooper MA, Davis RA. Semi-synthesis and NMR spectral assignments of flavonoid and chalcone derivatives. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:880-886. [PMID: 27379746 DOI: 10.1002/mrc.4482] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 06/29/2016] [Accepted: 07/01/2016] [Indexed: 06/06/2023]
Abstract
Previous investigations of the aerial parts of the Australian plant Eremophila microtheca and Syzygium tierneyanum resulted in the isolation of the antimicrobial flavonoid jaceosidin (4) and 2',6'-dihydroxy-4'-methoxy-3',5'-dimethyl chalcone (7), respectively. In this current study, compounds 4 and 7 were derivatized by acetylation, pivaloylation, and methylation reactions. The final products, 5,7,4'-triacetoxy jaceosidin (10), 5,7,4'-tripivaloyloxy jaceosidin (11), 5,7,4'-trimethoxy jaceosidin (12), 2',6'-diacetoxy-4'-methoxy-3',5'-dimethyl chalcone (13), 2'-hydroxy-4'-methoxy-6'-pivaloyloxy-3',5'-dimethyl chalcone (14), and 2'-hydroxy-4',6'-dimethoxy-3',5'-dimethyl chalcone (15) were all fully characterized by NMR and MS. Derivatives 10 and 13 have been previously reported but were only partially characterized. This is the first reported synthesis of 11 and 14. The natural products and their derivatives were evaluated for their antibacterial and antifungal properties, and the natural product, jaceosidin (4) and the acetylated derivative, 5,7,4'-triacetoxy jaceosidin (10), showed modest antibacterial activity (32-128 µg/ml) against Staphylococcus aureus strains. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Rohitesh Kumar
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, 4111, QLD, Australia
| | - Yuting Lu
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, 4111, QLD, Australia
| | - Alysha G Elliott
- Institute for Molecular Bioscience, University of Queensland, St Lucia, 4072, QLD, Australia
| | - Angela M Kavanagh
- Institute for Molecular Bioscience, University of Queensland, St Lucia, 4072, QLD, Australia
| | - Matthew A Cooper
- Institute for Molecular Bioscience, University of Queensland, St Lucia, 4072, QLD, Australia
| | - Rohan A Davis
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, 4111, QLD, Australia.
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Dimopoulos G, Kollef MH, Cohen J. In 2035, will all bacteria be multiresistant? Yes. Intensive Care Med 2016; 42:2014-2016. [PMID: 27091441 DOI: 10.1007/s00134-016-4310-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 03/04/2016] [Indexed: 12/14/2022]
Affiliation(s)
- George Dimopoulos
- Department of Critical Care, Attikon University Hospital, University of Athens, Medical School, Athens, Greece.
| | - Marin H Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Jon Cohen
- Division of Medicine, Brighton and Sussex Medical School, Brighton, UK
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49
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Wu J, Gao B, Zhu S. Single‐point mutation‐mediated local amphipathic adjustment dramatically enhances antibacterial activity of a fungal defensin. FASEB J 2016; 30:2602-14. [DOI: 10.1096/fj.201500157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 03/28/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Jiajia Wu
- Group of Peptide Biology and Evolution, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of SciencesBeijingChina
| | - Bin Gao
- Group of Peptide Biology and Evolution, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of SciencesBeijingChina
| | - Shunyi Zhu
- Group of Peptide Biology and Evolution, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of SciencesBeijingChina
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50
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Benzotriazole-Mediated Synthesis and Antibacterial Activity of Novel N-Acylcephalexins. Sci Pharm 2016; 84:484-496. [PMID: 28117314 PMCID: PMC5064239 DOI: 10.3390/scipharm84030484] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 02/18/2016] [Indexed: 11/17/2022] Open
Abstract
Cephalexin (1) was acylated using N-acylbenzotriazoles (3a–k′) derived from various carboxylic acids including aromatic, heterocyclic and N-Pg-α-amino acid to afford N-acylcephalexins in excellent yields (82%–96%). Antibacterial screening of the novel cephalosporins revealed that all targets (4a–j) retained the antibacterial activity of cephalexin against Staphylococcus aureus (ATCC 6538). N-Nicotinylcephalexin (4c) and N-(3,4,5-trimethoxybenzoyl)cephalexin (4g) exhibited a broader spectrum of antibacterial activity towards standard strains of Staphylococcus aureus (ATCC 6538), Paenibacillus polymyxa (ATCC 842), and Escherichia coli (ATCC 10536) as well as a resistant strain of Pseudomonas aeruginosa (ATCC 27853).
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