1
|
Dai SY, Qin WX, Yu S, Li C, Yang YH, Pei YH. Honokiol and magnolol: A review of structure-activity relationships of their derivatives. PHYTOCHEMISTRY 2024; 223:114132. [PMID: 38714288 DOI: 10.1016/j.phytochem.2024.114132] [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: 11/16/2023] [Revised: 04/21/2024] [Accepted: 05/02/2024] [Indexed: 05/09/2024]
Abstract
Honokiol (HK) and magnolol (MAG) are typical representatives of neolignans possessing a wide range of biological activities and are employed as traditional medicines in Asia. In the past few decades, HK and MAG have been proven to be promising chemical scaffolds for the development of novel neolignan drugs. This review focuses on recent advances in the medicinal chemistry of HK and MAG derivatives, especially their structure-activity relationships. In addition, it also presents a comprehensive summary of the pharmacology, biosynthetic pathways, and metabolic characteristics of HK and MAG. This review can provide pharmaceutical chemists deeper insights into medicinal research on HK and MAG, and a reference for the rational design of HK and MAG derivatives.
Collapse
Affiliation(s)
- Si-Yang Dai
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Wen-Xiu Qin
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Shuo Yu
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Chang Li
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Yi-Hui Yang
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China.
| | - Yue-Hu Pei
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China.
| |
Collapse
|
2
|
Guo Y, Han M, Zhong Y, Li X, Hu S, Yang R. Discovery of Novel (+)-Nootkatone-Based Amine Derivatives as Potential Insecticide Candidates. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38912665 DOI: 10.1021/acs.jafc.4c02697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
To discover novel natural product-based insecticides, a series of (+)-nootkatone-based amine derivatives 3a-t were prepared and evaluated for their insecticidal activities against Mythimna separata Walker, Myzus persicae Sulzer, and Plutella xylostella Linnaeus. Insecticidal assays showed that most of the title (+)-nootkatone derivatives exhibited stronger insecticidal activities against three insect pests than the precursor (+)-nootkatone after the introduction of amine groups on the parent (+)-nootkatone. Compounds 3a, 3d, 3h, 3m, 3n, 3p, and 3r displayed more promising growth inhibitory (GI) effect against M. separata than the commercially available botanical insecticide toosendanin. Compound 3o exhibited the most potent aphicidal activity with an LD50 value of 0.011 μg/larvae, which was 2.09-fold higher than the positive control rotenone. Additionally, compounds 3g and 3n showed more promising larvicidal activity against P. xylostella with LC50 values of 260 and 230 mg/L, respectively, superior to that of rotenone (460 mg/L). Moreover, derivatives 3g and 3n exhibited better control efficacy toward P. xylostella than rotenone under greenhouse conditions. Preliminary mechanistic studies revealed that derivative 3n could inhibit the activity of glutathione S-transferase (GST) in P. xylostella and thus exerted larvicidal activity, and molecular docking further demonstrated that 3n could interact well with some amino acid residues of GST. Finally, the toxicity assay suggested that derivatives 3g and 3n were relatively less toxic to nontarget organisms. These findings will provide insights into the development of (+)-nootkatone derivatives as green pesticides.
Collapse
Affiliation(s)
- Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Meiyue Han
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yan Zhong
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xueyu Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Songlin Hu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| |
Collapse
|
3
|
Zhu H, Zhong X. Honokiol as an α-glucosidase inhibitor. Front Pharmacol 2024; 15:1425832. [PMID: 38962316 PMCID: PMC11220239 DOI: 10.3389/fphar.2024.1425832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 06/04/2024] [Indexed: 07/05/2024] Open
Abstract
Honokiol, a naturally occurring compound from Magnolia obovata Thunb., has many biological activities, but its anti-α-glucosidase activity is still unclear. Therefore, we determined its inhibitory effects against α-glucosidase. Activity assays showed that honokiol was a reversible mixed-type inhibitor of α-glucosidase, and its IC50 value was 317.11 ± 12.86 μM. Fluorescence results indicated that the binding of honokiol to α-glucosidase caused a reduction in α-glucosidase activity. 3D fluorescence and CD spectra results indicated that the binding of honokiol to α-glucosidase caused conformational change in α-glucosidase. Docking simulated the detailed interactions between honokiol and α-glucosidase, including hydrogen and hydrophobic bonds. All findings showed that honokiol could be used as a natural inhibitor to develop α-glucosidase agents.
Collapse
Affiliation(s)
- Hua Zhu
- School of Chemistry and Chemical Engineering, Mianyang Teacher’s College, Mianyang, China
| | - Xin Zhong
- Dean’s Office, Mianyang Teacher’s College, Mianyang, China
| |
Collapse
|
4
|
Lin S, Song Y, Sun Y, Lin W, Yu G, Liao X, Yang Q. Morpholine-modified Ru-based agents with multiple antibacterial mechanisms as metalloantibiotic candidates against Staphylococcus aureus infection. RSC Adv 2024; 14:20130-20144. [PMID: 38915333 PMCID: PMC11194541 DOI: 10.1039/d4ra02667e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 06/06/2024] [Indexed: 06/26/2024] Open
Abstract
Multidrug-resistant bacteria resulting from the abuse and overuse of antibiotics have become a huge crisis in global public health security. Therefore, it is urgently needed to develop new antibacterial drugs with unique mechanisms of action. As a versatile moiety, morpholine has been widely employed to enhance the potency of numerous bioactive molecules. In this study, a series of ruthenium-based antibacterial agents modified with the morpholine moiety were designed and characterized, aiming to obtain a promising metalloantibiotic with a multitarget mechanism. Antibacterial activity screening demonstrated that the most active complex Ru(ii)-3 exhibited the strongest potency against Staphylococcus aureus (S. aureus) with an MIC value of only 0.78 μg mL-1, which is better than most clinically used antibiotics. Notably, Ru(ii)-3 not only possessed excellent bactericidal efficacy, but could also overcome bacterial resistance. Importantly, Ru(ii)-3 very efficiently removed biofilms produced by bacteria, inhibited the secretion of bacterial exotoxins, and enhanced the activity of many existing antibiotics. The results of mechanism studies confirmed that Ru(ii)-3 could destroy the bacterial membrane and induce ROS production in bacteria. Furthermore, animal infection models confirmed that Ru(ii)-3 showed significant anti-infective activity in vivo. Overall, this work demonstrated that a morpholine-modified ruthenium-based agent is a promising antibiotic candidate in tackling the crisis of drug-resistant bacteria.
Collapse
Affiliation(s)
- Shijie Lin
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University) Haikou 570311 China
| | - Yun Song
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University Nanchang 330013 China
| | - Yajuan Sun
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University Nanchang 330013 China
| | - Wenjing Lin
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University Nanchang 330013 China
| | - Guangying Yu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University Nanchang 330013 China
| | - Xiangwen Liao
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University Nanchang 330013 China
| | - Qiang Yang
- Department of Clinical Pharmacy, Hainan Cancer Hospital Haikou 570100 China
| |
Collapse
|
5
|
Chen G, Bai J, Wu X, Huo X, Li Y, Lei P, Ma Z. Amphiphilic amidines as potential plasmic membrane-targeting antifungal agents: synthesis, bio-activities and QSAR. PEST MANAGEMENT SCIENCE 2024. [PMID: 38877543 DOI: 10.1002/ps.8253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/17/2024] [Accepted: 06/04/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Cationic antimicrobial peptides (AMPs) possess broad-spectrum biological activities with less inclination to inducing antibiotic resistance. Herein a battery of amphiphilic amidines were designed by mimicking the characteristics of AMPs. The antifungal activities and the effects to the hyphal morphology and membrane permeability were investigated. RESULTS The results indicated the inhibitory rates of ten compounds were over 80% to Botrytis cinerea and ten compounds over 90% to Valsa mali Miyabe et Yamada at 50 mg L-1. The half maximal effective concentration (EC50) values of compound 5g and 6g to V. mali were 1.21 and 1.90 mg L-1 respectively. The protective rate against apple canker of compound 5g reached 93.4% at 100 mg L-1 on twigs, superior to carbendazim (53.3%). When treated with 5g, the cell membrane permeability and leakage of content of V. mali increased, accompanied with the decrease of superoxide dismutase (SOD) and catalase (CAT) level. Concurrently, the mycelial hyphae contracted, wrinkled, and collapsed, providing evidence of membrane perturbation. A three-dimensional quantitative structure-activity relationship (3D-QSAR) between the topic compounds and the EC50 to V. mali was established showing good predictability (r2 = 0.971). CONCLUSION Amphiphilic amidines can acquire antifungal activities by acting on the plasmic membrane. Compound 5g could be a promising lead in discovering novel fungicidal candidates. © 2024 Society of Chemical Industry.
Collapse
Affiliation(s)
- Guangyou Chen
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, China
| | - Jing Bai
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xinyan Wu
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xinyi Huo
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Yongqiang Li
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Peng Lei
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, China
| | - Zhiqing Ma
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, China
| |
Collapse
|
6
|
Xu T, Yan X, Kang A, Yang L, Li X, Tian Y, Yang R, Qin S, Guo Y. Development of Membrane-Targeting Fluorescent 2-Phenyl-1 H-phenanthro[9,10- d]imidazole-Antimicrobial Peptide Mimic Conjugates against Methicillin-Resistant Staphylococcus aureus. J Med Chem 2024; 67:9302-9317. [PMID: 38491982 DOI: 10.1021/acs.jmedchem.4c00436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2024]
Abstract
The escalation of multidrug-resistant bacterial infections, especially infections caused by methicillin-resistant Staphylococcus aureus (MRSA), underscores the urgent need for novel antimicrobial drugs. Here, we synthesized a series of amphiphilic 2-phenyl-1H-phenanthro[9,10-d]imidazole-antimicrobial peptide (AMP) mimic conjugates (III1-30). Among them, compound III13 exhibited excellent antibacterial activity against G+ bacteria and clinical MRSA isolates (MIC = 0.5-2 μg/mL), high membrane selectivity, and low toxicity. Additionally, compared with traditional clinical antibiotics, III13 demonstrated rapid bactericidal efficacy and was less susceptible to causing bacterial resistance. Mechanistic studies revealed that III13 targets phosphatidylglycerol (PG) on bacterial membranes to disrupt membrane integrity, leading to an increase in intracellular ROS and leakage of proteins and DNA, ultimately causing bacterial cell death. Furthermore, III13 possessed good fluorescence properties with potential for further dynamic monitoring of the antimicrobial process. Notably, III13 showed better in vivo efficacy against MRSA compared to vancomycin, suggesting its potential as a promising candidate for anti-MRSA medication.
Collapse
Affiliation(s)
- Ting Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
| | - Xiaoting Yan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ayue Kang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Longhua Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Xinhui Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Yue Tian
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| |
Collapse
|
7
|
Li X, Yuan Z, Wang Y, Wang W, Shi J. Recent advances of honokiol:pharmacological activities, manmade derivatives and structure-activity relationship. Eur J Med Chem 2024; 272:116471. [PMID: 38704945 DOI: 10.1016/j.ejmech.2024.116471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024]
Abstract
Honokiol (HNK) is a typical natural biphenyl polyphenol compound. It has been proven to have a wide range of biological activities, including pharmacological effects such as anti-cancer, anti-inflammatory, neuroprotective, and antimicrobial. However, due to the poor stability, water solubility, and bioavailability of HNK, HNK has not been used in clinical treatment. This article reviews the latest research on the pharmacological activity of HNK and summarizes the HNK derivatives designed and improved by several researchers. Reviewing these contents could promote the research process of HNK and guide the design of better HNK derivatives for clinical application in the future.
Collapse
Affiliation(s)
- Xiuxia Li
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Zhuo Yuan
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yuxia Wang
- Geriatric Intensive Care Unit, Sichuan Geriatric Medical Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, Sichuan Province, China
| | - Wenjing Wang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China; West China Medical Publishers, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Jianyou Shi
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
| |
Collapse
|
8
|
Xu S, Kang A, Tian Y, Li X, Qin S, Yang R, Guo Y. Plant Flavonoids with Antimicrobial Activity against Methicillin-Resistant Staphylococcus aureus (MRSA). ACS Infect Dis 2024. [PMID: 38833551 DOI: 10.1021/acsinfecdis.4c00292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) has become a serious threat to human public health and global economic development, and there is an urgent need to develop new antimicrobial agents. Flavonoids are the largest group of plant secondary metabolites, and the anti-S. aureus and anti-MRSA activities of flavonoids have now been widely reported. The aim of this Review is to describe plant-derived flavonoid active ingredients and their effects and mechanisms of inhibitory activity against MRSA in order to provide insights for screening novel antimicrobial agents. Here, 85 plant-derived flavonoids (14 flavones, 21 flavonols, 26 flavanones, 9 isoflavones, 12 chalcones, and 3 other classes) with anti-MRSA activity are reviewed. Among these flavonoids, flavones and isoflavones generally showed the most significant anti-MRSA activity (MICs: 1-8 μg/mL). The results of the present Review display that most of the flavonoids with excellent anti-MRSA activity were derived from Morus alba L. and Paulownia tomentosa (Thunb.) Steud. The antibacterial mechanism of flavonoids against MRSA is mainly achieved by disruption of membrane structures, inhibition of efflux pumps, and inhibition of β-lactamases and bacterial virulence factors. We hope this Review can provide insights into the development of novel antimicrobials based on natural products for treating MRSA infections.
Collapse
Affiliation(s)
- Shengnan Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
| | - Ayue Kang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yue Tian
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xinhui Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| |
Collapse
|
9
|
Pan C, Li Q, Xiong S, Yang Y, Yang Y, Huang C, Wang ZP. Delivery Strategies, Structural Modification, and Pharmacological Mechanisms of Honokiol: A Comprehensive Review. Chem Biodivers 2024; 21:e202302032. [PMID: 38308434 DOI: 10.1002/cbdv.202302032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
Honokiol (HK) is a traditional Chinese herbal bioactive compound that originates mainly from the Magnolia species, traditionally used to treat anxiety and stroke, as well as alleviation of flu symptoms. This natural product and its derivatives displayed diverse biological activities, including anticancer, antioxidant, anti-inflammatory, neuroprotective, and antimicrobial activities. However, its poor bioavailability and pharmacological activity require primary consideration in the development of HK-based drugs. Recent innovative HK formulations based on the nanotechnology approach allowed for improvement in both bioavailability and therapeutic efficacy. Chemical derivation and drug combination are also effective strategies to ameliorate the drawbacks of HK. In recent years, studies on HK derivatives and compositions have made great progress in the treatment of cancer, inflammation, bacterial infection, cardiovascular, and cerebrovascular diseases, demonstrating better activity than HK. The objective of this review is an examination of the recent developments in the field of pharmacological activity of HK and its drug-related issues, and approaches to improve its physicochemical and biological properties, including solubility, stability, and bioavailability. Recent patents and the ongoing clinical trials in HK are also summarized.
Collapse
Affiliation(s)
- Congying Pan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, P. R. China
| | - Qing Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, P. R. China
| | - Shuxin Xiong
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, P. R. China
| | - Yan Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, P. R. China
| | - Yi Yang
- Chongqing Energy College, No. 2 Fuxing Avenue, Shuangfu New District, Jiangjin District, Chongqing, 402260, P. R. China
| | - Chao Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, P. R. China
| | - Zhi-Peng Wang
- College of Pharmacy, Chongqing Medical University, Yixueyuan Road, Yuzhong District, Chongqing, 400016, P. R. China
| |
Collapse
|
10
|
Yang R, Fu X, Fan J, Wang T, Song J, Xu T, Guo Y, Zhang SY. Semisynthesis and biological evaluation of novel honokiol thioethers against colon cancer cells HCT116 via inhibiting the transcription and expression of YAP protein. Bioorg Med Chem 2024; 107:117762. [PMID: 38759254 DOI: 10.1016/j.bmc.2024.117762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
Honokiol, derived from Magnolia officinalis (a traditional Chinese medicine), has been reported to have anticancer activity. Here, a series of novel honokiol thioethers bearing a 1,3,4-oxadiazole moiety were prepared and evaluated for their anticancer activities against three types of digestive system tumor cells. Biological evaluation showed that honokiol derivative 3k exhibited the best antiproliferative activity against HCT116 cells with an IC50 value of 6.1 μmol/L, superior to the reference drug 5-fluorouracil (IC50: 9.63 ± 0.27 µmol/L). The structure-activity relationships (SARs) indicated that the introduction of -(4-NO2)Ph, 3-pyridyl, -(2-F)Ph, -(4-F)Ph, -(3-F)Ph, -(4-Cl)Ph, and -(3-Cl)Ph groups was favorable for enhancing the anticancer activity of the title honokiol thioethers. Further study revealed that honokiol thioether 3k can well inhibit the proliferation of colon cancer cells HCT116, arresting the cells in G1 phase and inducing cell death. Moreover, a preliminary mechanism study indicated that 3k directly inhibits the transcription and expression of YAP protein without activating the Hippo signaling pathway. Thus, honokiol thioether 3k could be deeply developed for the development of honokiol-based anticancer candidates.
Collapse
Affiliation(s)
- Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Xiangjing Fu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Jiangping Fan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Tingting Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Jian Song
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Ting Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
| | - Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China.
| | - Sai-Yang Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China.
| |
Collapse
|
11
|
Zhang F, Fang H, Zhao Y, Zhao B, Qin S, Wang Y, Guo Y, Liu J, Xu T. A membrane-targeting magnolol derivative for the treatment of methicillin-resistant Staphylococcus aureus infections. Front Microbiol 2024; 15:1385585. [PMID: 38827157 PMCID: PMC11140843 DOI: 10.3389/fmicb.2024.1385585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 04/26/2024] [Indexed: 06/04/2024] Open
Abstract
Multidrug-resistant bacterial infections are a major global health challenge, especially the emergence and rapid spread of methicillin-resistant Staphylococcus aureus (MRSA) urgently require alternative treatment options. Our study has identified that a magnolol derivative 6i as a promising agent with significant antibacterial activity against S. aureus and clinical MRSA isolates (MIC = 2-8 μg/mL), showing high membrane selectivity. Unlike traditional antibiotics, 6i demonstrated rapid bactericidal efficiency and a lower propensity for inducing bacterial resistance. Compound 6i also could inhibit biofilm formation and eradicate bacteria within biofilms. Mechanistic studies further revealed that 6i could target bacterial cell membranes, disrupting the integrity of the cell membrane and leading to increased DNA leakage, resulting in potent antibacterial effects. Meanwhile, 6i also showed good plasma stability and excellent biosafety. Notably, 6i displayed good in vivo antibacterial activity in a mouse skin abscess model of MRSA-16 infection, which was comparable to the positive control vancomycin. These findings indicated that the magnolol derivative 6i possessed the potential to be a novel anti-MRSA infection agent.
Collapse
Affiliation(s)
- Fushan Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hui Fang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Yuxin Zhao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Buhui Zhao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Yu Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Jifeng Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| | - Ting Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, China
| |
Collapse
|
12
|
Lin S, Chen Y, Sun Y, Yu G, Liao X, Yang Q. Evaluation of multi-target iridium(iii)-based metallodrugs in combating antimicrobial resistance and infections caused by Staphylococcus aureus. RSC Adv 2024; 14:16194-16206. [PMID: 38769952 PMCID: PMC11103350 DOI: 10.1039/d4ra02152e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 04/28/2024] [Indexed: 05/22/2024] Open
Abstract
The rapid emergence and spread of multidrug-resistant bacteria pose a serious challenge to human life and health, necessitating the development of novel antibacterial agents. Herein, to address this challenge, three iridium-based antibacterial agents were prepared and their antimicrobial activity were explored. Importantly, the three complexes all showed robust potency against S. aureus with MIC values in the range of 1.9-7.9 μg mL-1. Notably, the most active complex Ir3 also exhibited relative stability in mammalian fluids and a significant antibacterial effect on clinically isolated drug-resistant bacteria. Mechanism studies further demonstrated that the complex Ir3 can kill S. aureus by disrupting the integrity of the bacterial membrane and inducing ROS production. This multi-target advantage allows Ir3 to not only effectively combat bacterial resistance but also efficiently clear the bacterial biofilm. In addition, when used together, complex Ir3 could enhance the antibacterial potency of some clinical antibiotics against S. aureus. Moreover, both G. mellonella wax worms and mouse infection model demonstrated that Ir3 has low toxicity and robust anti-infective efficacy in vivo. Overall, complex Ir3 can serve as a new antibacterial agent for combating Gram-positive bacterial infections.
Collapse
Affiliation(s)
- Shijie Lin
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University) Haikou 570311 China
| | - Yushou Chen
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science&Technology Normal University Nanchang 330013 China
| | - Yajuan Sun
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science&Technology Normal University Nanchang 330013 China
| | - Guangying Yu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science&Technology Normal University Nanchang 330013 China
| | - Xiangwen Liao
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science&Technology Normal University Nanchang 330013 China
| | - Qiang Yang
- Department of Clinical Pharmacy, Hainan Cancer Hospital Haikou 570100 China
| |
Collapse
|
13
|
Yang R, Xue Z, Li X, Xu T, Zhong Y, Hu S, Qin S, Guo Y. Novel natural osthole-inspired amphiphiles as membrane targeting antibacterials against methicillin-resistant Staphylococcus aureus (MRSA). Eur J Med Chem 2024; 271:116449. [PMID: 38691893 DOI: 10.1016/j.ejmech.2024.116449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 05/03/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a widespread pathogen causing clinical infections and is multi-resistant to many antibiotics, making it urgent need to develop novel antibacterials to combat MRSA. Herein, we designed and prepared a series of novel osthole amphiphiles 6a-6ad by mimicking the structures and function of antimicrobial peptides (AMPs). Antibacterial assays showed that osthole amphiphile 6aa strongly inhibited S. aureus and 10 clinical MRSA isolates with MIC values of 1-2 μg/mL, comparable to that of the commercial antibiotic vancomycin. Additionally, 6aa had the advantages of rapid bacteria killing without readily developing drug resistance, low toxicity, good membrane selectivity, and good plasma stability. Mechanistic studies indicated that 6aa possesses good membrane-targeting ability to bind to phosphatidylglycerol (PG) on the bacterial cell membranes, thereby disrupting the cell membranes and causing an increase in intracellular ROS as well as leakage of proteins and DNA, and accelerating bacterial death. Notably, in vivo activity results revealed that 6aa exhibits strong anti-MRSA efficacy than vancomycin as well as a substantial reduction in MRSA-induced proinflammatory cytokines, including TNF-α and IL-6. Given the impressive in vitro and in vivo anti-MRSA efficacy of 6aa, which makes it a potential candidate against MRSA infections.
Collapse
Affiliation(s)
- Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China.
| | - Zihan Xue
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Xinhui Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ting Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China
| | - Yan Zhong
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China
| | - Songlin Hu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China.
| |
Collapse
|
14
|
Liu Y, Lu M, Sun Q, Guo Z, Lin Y, Li S, Huang Y, Li Y, Fu Q. Magnolol attenuates macrophage pyroptosis triggered by Streptococcus equi subsp. zooepidemicus. Int Immunopharmacol 2024; 131:111922. [PMID: 38522137 DOI: 10.1016/j.intimp.2024.111922] [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: 08/05/2023] [Revised: 12/11/2023] [Accepted: 03/21/2024] [Indexed: 03/26/2024]
Abstract
Streptococcus equi subsp. zooepidemicus (SEZ) is a zoonotic bacterial pathogen that causes life-threatening infections and various diseases such as meningitis, endocarditis and pneumonia. With the use of antibiotics being severely restricted in the international community, an alternative to antibiotics is urgently needed against bacterial. In the present study, the herbal extract magnolol protected mice against SEZ infection, reflected by increased survival rate and reduced bacterial burden. A pro-inflammatory form of cell death occurred in SEZ-infected macrophage. Magnolol downregulated the expression of pyroptosis-related proteins and reduced the formation of cell membrane pores in infected macrophages to suppress the development of subsequent inflammation. We further demonstrated that magnolol directly suppressed SEZ-induced macrophage pyroptosis, which partially protected macrophages from SEZ infection. Our study revealed that magnolol suppressed inflammation and protected mice against SEZ infection, providing a possible treatment for SEZ infection.
Collapse
Affiliation(s)
- Yuxuan Liu
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Meijun Lu
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Qian Sun
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Zheng Guo
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Yongjin Lin
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Shun Li
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China
| | - Yunfei Huang
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China
| | - Yajuan Li
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China.
| | - Qiang Fu
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China.
| |
Collapse
|
15
|
Ghosh S, Sen S, Jash M, Ghosh S, Jana A, Roy R, Mukherjee N, Mukherjee D, Sarkar J, Ghosh S. Synergistic Augmentation of Beta-Lactams: Exploring Quinoline-Derived Amphipathic Small Molecules as Antimicrobial Potentiators against Methicillin-Resistant Staphylococcus aureus. ACS Infect Dis 2024; 10:1267-1285. [PMID: 38442370 DOI: 10.1021/acsinfecdis.3c00696] [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] [Indexed: 03/07/2024]
Abstract
The escalation of bacterial resistance against existing therapeutic antimicrobials has reached a critical peak, leading to the rapid emergence of multidrug-resistant strains. Stringent pathways in novel drug discovery hinder our progress in this survival race. A promising approach to combat emerging antibiotic resistance involves enhancing conventional ineffective antimicrobials using low-toxicity small molecule adjuvants. Recent research interest lies in weak membrane-perturbing agents with unique cyclic hydrophobic components, addressing a significant gap in antimicrobial drug exploration. Our study demonstrates that quinoline-based amphipathic small molecules, SG-B-52 and SG-B-22, significantly reduce MICs of selected beta-lactam antibiotics (ampicillin and amoxicillin) against lethal methicillin-resistant Staphylococcus aureus (MRSA). Mechanistically, membrane perturbation, depolarization, and ROS generation drive cellular lysis and death. These molecules display minimal in vitro and in vivo toxicity, showcased through hemolysis assays, cell cytotoxicity analysis, and studies on albino Wistar rats. SG-B-52 exhibits impressive biofilm-clearing abilities against MRSA biofilms, proposing a strategy to enhance beta-lactam antibiosis and encouraging the development of potent antimicrobial potentiators.
Collapse
Affiliation(s)
- Surojit Ghosh
- Smart Healthcare Department, Interdisciplinary Research Platform, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Samya Sen
- iHUB Drishti Foundation, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Moumita Jash
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Satyajit Ghosh
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Aniket Jana
- Smart Healthcare Department, Interdisciplinary Research Platform, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Rajsekhar Roy
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Nabanita Mukherjee
- Smart Healthcare Department, Interdisciplinary Research Platform, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Dipro Mukherjee
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| | - Jayita Sarkar
- Centre for Research and Development of Scientific Instruments (CRDSI), Indian Institute of Technology, Jodhpur, Rajasthan, 342030, India
| | - Surajit Ghosh
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
- Smart Healthcare Department, Interdisciplinary Research Platform, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
- iHUB Drishti Foundation, Indian Institute of Technology, Jodhpur, Rajasthan 342030, India
| |
Collapse
|
16
|
Huang YJ, Zang YP, Peng LJ, Yang MH, Lin J, Chen WM. Cajaninstilbene acid derivatives conjugated with siderophores of 3-hydroxypyridin-4(1H)-ones as novel antibacterial agents against Gram-negative bacteria based on the Trojan horse strategy. Eur J Med Chem 2024; 269:116339. [PMID: 38537513 DOI: 10.1016/j.ejmech.2024.116339] [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: 02/03/2024] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 04/07/2024]
Abstract
The low permeability of the outer membrane of Gram-negative bacteria is a serious obstacle to the development of new antibiotics against them. Conjugation of antibiotic with siderophore based on the "Trojan horse strategy" is a promising strategy to overcome the outer membrane obstacle. In this study, series of antibacterial agents were designed and synthesized by conjugating the 3-hydroxypyridin-4(1H)-one based siderophores with cajaninstilbene acid (CSA) derivative 4 which shows good activity against Gram-positive bacteria by targeting their cell membranes but is ineffective against Gram-negative bacteria. Compared to the inactive parent compound 4, the conjugates 45c or 45d exhibits significant improvement in activity against Gram-negative bacteria, including Escherichia coli, Klebsiella pneumoniae and especially P. aeruginosa (minimum inhibitory concentrations, MICs = 7.8-31.25 μM). The antibacterial activity of the conjugates is attributed to the CSA derivative moiety, and the action mechanism is by disruption of bacterial cell membranes. Further studies on the uptake mechanisms showed that the bacterial siderophore-dependent iron transport system was involved in the uptake of the conjugates. In addition, the conjugates 45c and 45d showed a lower cytotoxic effects in vivo and in vitro and a positive therapeutic effect in the treatment of C. elegans infected by P. aeruginosa. Overall, our work describes a new class and a promising 3-hydroxypyridin-4(1H)-one-CSA derivative conjugates for further development as antibacterial agents against Gram-negative bacteria.
Collapse
Affiliation(s)
- Yong-Jun Huang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Yi-Peng Zang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Li-Jun Peng
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Ming-Han Yang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Jing Lin
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China.
| | - Wei-Min Chen
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China.
| |
Collapse
|
17
|
Yang R, Cheng W, Huang M, Xu T, Zhang M, Liu J, Qin S, Guo Y. Novel membrane-targeting isoxanthohumol-amine conjugates for combating methicillin-resistant Staphylococcus aureus (MRSA) infections. Eur J Med Chem 2024; 268:116274. [PMID: 38408389 DOI: 10.1016/j.ejmech.2024.116274] [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: 12/27/2023] [Revised: 02/13/2024] [Accepted: 02/20/2024] [Indexed: 02/28/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a widespread pathogen causing clinical infections and is multi-resistant to many antibiotics, making it urgent need to develop novel antibacterials to combat MRSA. Here, a series of novel isoxanthohumol-amine conjugates were synthesized as antibacterials. After bioactivity evaluation, a compound E2 was obtained, which showed excellent antibacterial activity against S. aureus and clinical MRSA isolates (MICs = 0.25-1 μg/mL), superior to vancomycin, and with negligible hemolysis and good membrane selectivity. Additionally, E2 exhibited fast bacterial killing, less susceptible to resistance, relatively low cytotoxicity, and good plasma stability. Mechanism investigation revealed that E2 can disrupt bacterial membranes by specifically binding to phosphatidylglycerol on the bacterial membrane, thus causing elevated intracellular ROS and leakage of DNA and proteins, and ultimately killing bacteria. Noticeably, E2 displayed a good in vivo safety profile and better in vivo therapeutic efficacy than the same dose of vancomycin, allowing it to be a potential antibacterial to conquer MRSA infections.
Collapse
Affiliation(s)
- Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China
| | - Wanqing Cheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China
| | - Meijuan Huang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China
| | - Ting Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China
| | - Miaomiao Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China
| | - Jifeng Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China
| | - Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China.
| |
Collapse
|
18
|
Wang YJ, Chen X, Yin Y, Zhou W, Zhou PF, Zeng LG, Hu CH, Yin GP. Hedscandines A-C, three undescribed indole alkaloids from Hedyotis scandens with their anti-MRSA activity. PHYTOCHEMISTRY 2024; 219:113988. [PMID: 38224846 DOI: 10.1016/j.phytochem.2024.113988] [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: 10/01/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/17/2024]
Abstract
Hedscandines A-C (1-3), three undescribed indole alkaloids were isolated from Hedyotis scandens Roxb, a traditional Chinese medicine widely used in the treatment of respiratory ailments. Their structures were elucidated by extensive spectroscopic data and electronic circular dichroism calculation. Hedscandine A (1), possessed a unique carbon skeleton with a 1,4-oxazonin-2(3H)-one core system and displayed a rapid bactericidal activity against MRSA with a MIC value of 16 μg/mL. Mechanistic studies showed that compound 1 could disrupt the integrity of bacterial cell membranes and thus lead to bacterial death.
Collapse
Affiliation(s)
- Yu-Jun Wang
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China
| | - Xue Chen
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China
| | - Yong Yin
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China
| | - Wei Zhou
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China
| | - Pei-Fu Zhou
- Key Laboratory of Guizhou Ethnic Medicine Resource Development and Utilization, State Ethnic Affairs Commission, School of Chinese Ethnic Medicine, Guizhou Minzu University, Guiyang, Guizhou, 550025, China
| | - Ling-Gao Zeng
- NMPA Key Laboratory for Quality Monitoring of Narcotic Drugs and Psychotropic Substances, Chongqing Institute for Food and Drug Control, Chongqing, 401121, China
| | - Chang-Hua Hu
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China.
| | - Guo-Ping Yin
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China.
| |
Collapse
|
19
|
Jiang J, Hou X, Xu K, Ji K, Ji Z, Xi J, Wang X. Bacteria-targeted magnolol-loaded multifunctional nanocomplexes for antibacterial and anti-inflammatory treatment. Biomed Mater 2024; 19:025029. [PMID: 38290149 DOI: 10.1088/1748-605x/ad2406] [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: 08/15/2023] [Accepted: 01/30/2024] [Indexed: 02/01/2024]
Abstract
Natural plant-derived small molecules have shown great potential for their antimicrobial and anti-inflammatory properties. In this study, we successfully developed a nanocomplex consisting of magnolol (Mag), a surfactant with an 18 carbon hydrocarbon chain and multi-amine head groups (C18N3), and a peptide (cyclic 9-amino acid peptide (CARG)) with targeting capabilities forStaphylococcus aureus(S. aureus). The obtained Mag/C18N3/CARG nanocomplexes exhibited strong antibacterial activity againstS. aureus. Furthermore, they demonstrated anti-inflammatory effects by reducing the secretion of pro-inflammatory cytokines such as TNF-α, IL-6, and IL-1βfrom macrophage inflammatory cells. This was achieved through downregulating the activation of NF-κB, KEAP1, and NRF2 signaling pathways. In a murine skin infection model, the Mag/C18N3/CARG nanocomplexes effectively suppressed the growth ofS. aureusin the infected area and promoted wound healing. Additionally, in a mouse model of acute kidney injury (AKI), the nanocomplexes significantly reduced the levels of blood urea nitrogen and creatinine, leading to a decrease in mortality rate. These findings demonstrate the potential of combining natural plant-derived small molecules with C18N3/CARG assemblies as a novel approach for the development of effective and safe antibacterial agents.
Collapse
Affiliation(s)
- Jian Jiang
- Central Laboratory, Binhai County People's Hospital, Clinical Medical College of Yangzhou University, Yancheng 224000, People's Republic of China
- Institute of Translational Medicine, Yangzhou University, Yangzhou 225009, People's Republic of China
| | - Xuefeng Hou
- Central Laboratory, Binhai County People's Hospital, Clinical Medical College of Yangzhou University, Yancheng 224000, People's Republic of China
| | - Kangjie Xu
- Central Laboratory, Binhai County People's Hospital, Clinical Medical College of Yangzhou University, Yancheng 224000, People's Republic of China
| | - Kangkang Ji
- Central Laboratory, Binhai County People's Hospital, Clinical Medical College of Yangzhou University, Yancheng 224000, People's Republic of China
| | - Zhongkai Ji
- Department of Orthopaedics, Binhai County People's Hospital, Yancheng 224000, People's Republic of China
| | - Juqun Xi
- Central Laboratory, Binhai County People's Hospital, Clinical Medical College of Yangzhou University, Yancheng 224000, People's Republic of China
- Institute of Translational Medicine, Yangzhou University, Yangzhou 225009, People's Republic of China
| | - Xin Wang
- Department of Critical Care Medicine, Binhai County People's Hospital, Yancheng 224000, People's Republic of China
| |
Collapse
|
20
|
Guo W, Yang Z, Wang K, Li W, Zhao Y, Yang Y, Chang W, Gong Z, Liu Z, Chen Y, Li Q. Discovery of Unique Bis-Substituted Aromatic Amide Derivatives as Novel Highly Potent Antibiotics for Combating Methicillin-Resistant Staphylococcus aureus (MRSA). J Med Chem 2024; 67:2129-2151. [PMID: 38289145 DOI: 10.1021/acs.jmedchem.3c02064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Due to the increasing antibiotic resistance, developing novel antimicrobials to fight infections caused by resistant bacteria is imperative. Herein, a series of novel bis-substituted aromatic amides were designed and synthesized through modifying the hit compound 1, and their antimicrobial activities were evaluated. Among them, compound 4t, as the most potent lead, exhibited excellent antimicrobial activities against Gram-positive bacteria, including clinical methicillin-resistant Staphylococcus aureus (MRSA) isolates, while keeping weak hemolytic and mammalian cytotoxic activities. Furthermore, compound 4t displayed rapid bactericidal capabilities, low tendency to produce resistance, and favorable capacities to destroy bacterial biofilms. Further explorations indicated that compound 4t induces bacterial death by binding to cardiolipin (CL) on the bacterial membrane, disrupting the cell membrane, and facilitating the accumulation of reactive oxygen species (ROS). Additionally, compound 4t showed remarkable anti-MRSA activity in vivo, demonstrating compound 4t could be developed as a potential candidate to combat MRSA infections.
Collapse
Affiliation(s)
- Weikai Guo
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| | - Zhengfan Yang
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| | - Kexiao Wang
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| | - Wenyu Li
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| | - Yanyang Zhao
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| | - Yuqing Yang
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| | - Wenjing Chang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou 450003, China
| | - Zhen Gong
- Department of Clinical Laboratory, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Zhou Liu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Yihua Chen
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, The Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Qiming Li
- The Jointed National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng 475004, China
| |
Collapse
|
21
|
Liu J, Guo B, Zhong S, Shi Y, Li Z, Yu Z, Hao Z, Zhang L, Li F, Wang Y, Li Y. Novel Evodiamine-Based Sulfonamide Derivatives as Potent Insecticide Candidates Targeting Insect Ryanodine Receptors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1292-1301. [PMID: 38178001 DOI: 10.1021/acs.jafc.3c05680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Pests represent an important impediment to efficient agricultural production and pose a threat to global food security. On the basis of our prior research focused on identifying insecticidal leads targeting insect ryanodine receptors (RyRs), we aimed to identify evodiamine scaffold-based novel insecticides. Thus, a variety of evodiamine-based derivatives were designed, synthesized, and assessed for their insecticidal activity against the larvae of Mythimna separata (M. separata) and Plutella xylostella (P. xylostella). The preliminary bioassay results revealed that more than half of the target compounds exhibited superior activity compared to evodiamine, matrine, and rotenone against M. separata. Among these, compound 21m displayed the most potent larvicidal efficiency, with a remarkable mortality rate of 93.3% at 2.5 mg/L, a substantial improvement over evodiamine (10.0% at 10 mg/L), matrine (10.0% at 200 mg/L), and rotenone (30.0% at 200 mg/L). In the case of P. xylostella, compounds 21m and 21o displayed heightened larvicidal activity, boasting LC50 values of 9.37 × 10-2 and 0.13 mg/L, respectively, surpassing that of evodiamine (13.41 mg/L), matrine (291.78 mg/L), and rotenone (18.39 mg/L). A structure-activity relationship analysis unveiled that evodiamine-based derivatives featuring a cyclopropyl sulfonyl group at the nitrogen atom of the B ring and a fluorine atom in the E ring exhibited more potent larvicidal effects. This finding was substantiated by calcium imaging experiments and molecular docking, which suggested that 21m could target insect RyRs, including resistant mutant RyRs of P. xylostella (G4946E and I4790M), with higher affinity than chlorantraniliprole (CHL). Additionally, cytotoxicity assays highlighted that the potent compounds 21i, 21m, and 21o displayed favorable selectivity and low toxicity toward nontarget organisms. Consequently, compound 21m emerges as a promising candidate for further development as an insecticide targeting insect RyRs.
Collapse
Affiliation(s)
- Jingbo Liu
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Bingyan Guo
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Siying Zhong
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Yabing Shi
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Zhengping Li
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Zhenwu Yu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zesheng Hao
- Key Laboratory for Chemical Pesticide of Shandong Province, Shandong Academy of Pesticide Sciences, Jinan 250100, P. R. China
| | - Li Zhang
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Fengyun Li
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P. R. China
| | - Yuanhong Wang
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin 300392, P. R. China
| | - Yuxin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| |
Collapse
|
22
|
Li T, He X, Tao W, Zhang R, He Q, Gong H, Liu Y, Luo D, Zhang M, Zou C, Zhang SL, He Y. Development of membrane-targeting TPP +-chloramphenicol conjugates to combat methicillin-resistant staphylococcus aureus (MRSA) infections. Eur J Med Chem 2024; 264:115973. [PMID: 38096652 DOI: 10.1016/j.ejmech.2023.115973] [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: 07/14/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 12/30/2023]
Abstract
Infections caused by drug-resistant bacteria have become a new challenge in infection treatment, gravely endangering public health. Chloramphenicol (CL) is a well-known antibiotic which has lost its efficacy due to bacterial resistance. To address this issue, herein we report the design, synthesis and biological evaluations of novel triphenylphosphonium chloramphenicol conjugates (TPP+-CL). Study results indicated that compounds 39 and 42 possessed remarkable antibacterial effects against clinically isolated methicillin-resistant Staphylococcus aureus (MRSA) with MIC values ranging from 1 to 2 μg/mL, while CL was inactive to the tested MRSA strains. In addition, these conjugates exhibited rapid bactericidal properties and low toxicity, and did not readily induced bacterial resistance, obviously outperforming the parent drug CL. In a mouse model infected with a clinically isolated MRSA strain, compound 39 at a dose of 20 mg/kg exhibited a comparable or even better in vivo anti-MRSA efficacy than the golden standard drug vancomycin, while no toxicity was observed.
Collapse
Affiliation(s)
- Tao Li
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Xiaoli He
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, 266 Fangzheng Ave, Shuitu Technology Development Zone, Beibei, Chongqing, 400714, PR China
| | - Wenlan Tao
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, 266 Fangzheng Ave, Shuitu Technology Development Zone, Beibei, Chongqing, 400714, PR China
| | - Ruixue Zhang
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Qiaolin He
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Hongzhi Gong
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Ye Liu
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Dong Luo
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Maojie Zhang
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Cheng Zou
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China
| | - Shao-Lin Zhang
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China; State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, 518055, PR China.
| | - Yun He
- School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, No. 55 Daxuecheng South Rd., Shapingba, Chongqing, 401331, PR China; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, 266 Fangzheng Ave, Shuitu Technology Development Zone, Beibei, Chongqing, 400714, PR China.
| |
Collapse
|
23
|
Zhu YY, Wang ZJ, Zhu M, Zhou ZS, Hu BY, Wei MZ, Zhao YL, Dai Z, Luo XD. A dual mechanism with H 2S inhibition and membrane damage of morusin from Morus alba Linn. against MDR-MRSA. Bioorg Med Chem 2024; 97:117544. [PMID: 38071943 DOI: 10.1016/j.bmc.2023.117544] [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: 09/23/2023] [Revised: 11/15/2023] [Accepted: 12/04/2023] [Indexed: 12/30/2023]
Abstract
It's urgent to discover new antibiotics along with the increasing emergence and dissemination of multidrug resistant (MDR) bacterial pathogens. In the present investigation, morusin exhibited rapid bactericidal activity against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE) by targeting the phospholipid of bacterial inner membrane, increasing membrane rigidity and disrupting bacterial homeostasis together with the membrane permeability, which caused fundamental metabolic disorders. Furthermore, morusin can also accumulate ROS, suppress H2S production, and aggravate oxidative damage in bacteria. Importantly, morusin also inhibited the spread of wounds and reduced the bacterial burden in the mouse model of skin infection caused by MRSA. It's a chance to meet the challenge of existing antibiotic resistance and avoid the development of bacterial resistance, given the multiple targets of morusin.
Collapse
Affiliation(s)
- Yan-Yan Zhu
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Zhao-Jie Wang
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Meng Zhu
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Zhong-Shun Zhou
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Bin-Yuan Hu
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Mei-Zhen Wei
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Yun-Li Zhao
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Zhi Dai
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Xiao-Dong Luo
- Yunnan Characteristic Plant Extraction Laboratory, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.
| |
Collapse
|
24
|
Qiao H, Tengfei Z, Wenting Z, Qin L, Yunqing G, Xiaoyi C, Huabin S, Xinguo Z, Qingping L. Mechanistic insights of magnolol antimicrobial activity against Mycoplasma using untargeted metabolomic analyses. Front Cell Infect Microbiol 2023; 13:1325347. [PMID: 38152121 PMCID: PMC10751911 DOI: 10.3389/fcimb.2023.1325347] [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: 10/21/2023] [Accepted: 11/29/2023] [Indexed: 12/29/2023] Open
Abstract
The unreasonable use of antibiotics is one of the important causes of antimicrobial resistance (AMR) that poses a huge public health threat. Magnolol is a traditional Chinese medicine exhibiting antibacterial-, antifungal-, anti-inflammatory-, and antioxidant activities. However, it is unclear whether magnolol has an inhibitory effect on mycoplasma. This study found that magnolol showed excellent inhibitory activity against various mycoplasmas. Magnolol showed dose-dependent inhibition of Mycoplasma synoviae growth and biofilm formation in vitro. Magnolol caused severely sunken and wrinkled M. synoviae cell membranes at the minimum inhibitory concentration, and an enlarged cell diameter. The chicken embryo infection model showed that magnolol significantly reduced M. synoviae pathogenicity in vivo. Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that the citrate cycle, glycolysis/gluconeogenesis, and pyruvate metabolism were significantly disturbed at the minimum inhibitory concentration of magnolol. Interestingly, 41% of differential metabolites were in the categories of lipids and lipid-like molecules. Protegenin A was up-regulated 58752-fold after magnolol treatment. It belongs to fatty acyls, and destroys cell membrane integrity and cell activity. Ghosphatidylethanolamine, phosphatidylglycerol, phosphatidic acid, and phosphatidylserine related to membrane maintenance and stress response were widely down-regulated. Collectively, our results illustrate the feasibility of magnolol as a phytochemical compound to treat mycoplasma infection.
Collapse
Affiliation(s)
- Hu Qiao
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Zhang Tengfei
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Zhang Wenting
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Lu Qin
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Guo Yunqing
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Cao Xiaoyi
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
- College of Life Science and Food Engineering, Hebei University of Technology, Hebei, China
| | - Shao Huabin
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Zhai Xinguo
- College of Life Science and Food Engineering, Hebei University of Technology, Hebei, China
| | - Luo Qingping
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
| |
Collapse
|
25
|
Chavarria D, Borges A, Benfeito S, Sequeira L, Ribeiro M, Oliveira C, Borges F, Simões M, Cagide F. Phytochemicals and quaternary phosphonium ionic liquids: Connecting the dots to develop a new class of antimicrobial agents. J Adv Res 2023; 54:251-269. [PMID: 36822390 DOI: 10.1016/j.jare.2023.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/24/2023] Open
Abstract
INTRODUCTION The infections by multidrug-resistant bacteria are a growing threat to human health, and the efficacy of the available antibiotics is gradually decreasing. As such, new antibiotic classes are urgently needed. OBJECTIVES This study aims to evaluate the antimicrobial activity, safety and mechanism of action of phytochemical-based triphenylphosphonium (TPP+) conjugates. METHODS A library of phytochemical-based TPP+ conjugates was repositioned and extended, and its antimicrobial activity was evaluated against a panel of Gram-positive (methicillin-resistant Staphylococcus aureus - MRSA) and Gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii) and fungi (Candida albicans, Cryptococcus neoformans var. grubii). The compounds' cytotoxicity and haemolytic profile were also evaluated. To unravel the mechanism of action of the best compounds, the alterations in the surface charge, bacterial membrane integrity, and cytoplasmic leakage were assessed. RESULTS Structure-activity-toxicity data revealed the contributions of the different structural components (phenolic ring, carbon-based spacers, carboxamide group, alkyl linker) to the compounds' bioactivity and safety. Dihydrocinnamic derivatives 5 m and 5n stood out as safe, potent and selective antibacterial agents against S. aureus (MIC < 0.25 µg/mL; CC50 > 32 µg/mL; HC10 > 32 µg/mL). Mechanistic studies suggest that the antibacterial activity of compounds 5 m and 5n may result from interactions with the bacterial cell wall and membrane. CONCLUSIONS Collectively, these studies demonstrate the potential of phytochemical-based TPP+ conjugates as a new class of antibiotics.
Collapse
Affiliation(s)
- Daniel Chavarria
- CIQUP-IMS/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Anabela Borges
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Sofia Benfeito
- CIQUP-IMS/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Lisa Sequeira
- CIQUP-IMS/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Marta Ribeiro
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Catarina Oliveira
- CIQUP-IMS/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Fernanda Borges
- CIQUP-IMS/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Manuel Simões
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Fernando Cagide
- CIQUP-IMS/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
| |
Collapse
|
26
|
Zhang C, Wang L, Deng W, Huang H, Wang J, Liao X, Duan X, Yu R, Xiong Y. Metal-ruthenium complex based on dipyridylamine group as membrane-active antibacterial agent effectively decrease the development of drug-resistance on Staphylococcus aureus. J Inorg Biochem 2023; 249:112385. [PMID: 37774565 DOI: 10.1016/j.jinorgbio.2023.112385] [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: 07/01/2023] [Revised: 09/15/2023] [Accepted: 09/21/2023] [Indexed: 10/01/2023]
Abstract
Staphylococcus aureus (S. aureus), one of the Gram-positive bacteria, is easily to develop drug-resistance. Drug-resistant S. aureus infection leads to high morbidity and mortality. The complexes, namely [Ru(dpa)2(PSPIP)](PF6)2 (Ru1), [Ru(dpa)2(TSPIP)](PF6)2 (Ru2), and [Ru(dpa)2(TBPIP)](PF6)2 (Ru3), were synthesized using 2, 2'-dipyridylamine as an auxiliary ligand and three main ligands PSPIP, TSPIP, TBPIP. In vitro studies demonstrated that the Ru1-3 exhibited excellent antibacterial activity against S. aureus while showing low hemolytic toxicity to rabbit red blood cells. Notably, Ru3 was found to disrupt the bacterial cell membrane and alter its permeability through fluorescence staining and scanning electron microscopy (SEM) analysis. Furthermore, Ru3 displayed low toxicity in G. mellonella Larvae. Ru3 exhibited good activity against S. aureus in G. mellonella Larvae infection model and mouse skin infection model.To some extent, Ru3 inhibited biofilm formation on S. aureus as well as hemolytic toxin production, thereby attenuating the development of drug resistance without cross-resistance with other antibiotics. In addition, complex Ru3 exhibited a synergistic effect when combined with antibiotics amikacin, kanamycin, tobramycin and chloramphenicol, making it a valuable antibiotics adjuvant.
Collapse
Affiliation(s)
- ChunYan Zhang
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - LiQiang Wang
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - Wei Deng
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - HaiYan Huang
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - JinTao Wang
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - XiangWen Liao
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - XueMin Duan
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - RuJian Yu
- School of Life Science, Jiangxi Science&Technology Normal University, Nanchang 330013, China
| | - YanShi Xiong
- School of Pharmacy, Jiangxi Science&Technology Normal University, Nanchang 330013, China.
| |
Collapse
|
27
|
Wang LQ, Zhang CY, Chen JJ, Lin WJ, Yu GY, Deng LS, Ji XR, Duan XM, Xiong YS, Jiang GJ, Wang JT, Liao XW, Liu LH. Ru-Based Organometallic Agents Bearing Phenyl Hydroxide: Synthesis and Antibacterial Mechanism Study against Staphylococcus aureus. ChemMedChem 2023; 18:e202300306. [PMID: 37527976 DOI: 10.1002/cmdc.202300306] [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: 06/13/2023] [Revised: 07/17/2023] [Accepted: 08/01/2023] [Indexed: 08/03/2023]
Abstract
The development of antimicrobial agents with novel model of actions is a promising strategy to combat multiple resistant bacteria. Here, three ruthenium-based complexes, which acted as potential antimicrobial agents, were synthesized and characterized. Importantly, three complexes all showed strong bactericidal potency against Staphylococcus aureus. In particular, the most active one has a MIC of 6.25 μg/mL. Mechanistic studies indicated that ruthenium complex killed S. aureus by releasing ROS and damaging the integrity of bacterial cell membrane. In addition, the most active complex not only could inhibit the biofilm formation and hemolytic toxin secretion of S. aureus, but also serve as a potential antimicrobial adjuvant as well, which showed synergistic effects with eight traditional antibiotics. Finally, both G. mellonella larva infection model and mouse skin infection model all demonstrated that ruthenium complex also showed significant efficacy against S. aureus in vivo. In summary, our study suggested that ruthenium-based complexes bearing a phenyl hydroxide are promising antimicrobial agents for combating S. aureus.
Collapse
Affiliation(s)
- L Q Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - C Y Zhang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - J J Chen
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - W J Lin
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - G Y Yu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - L S Deng
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - X R Ji
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - X M Duan
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Y S Xiong
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - G J Jiang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - J T Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - X W Liao
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - L H Liu
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, 418000, China
| |
Collapse
|
28
|
Wang J, Song Y, Huang Z, Lin W, Yu G, Xiong Y, Jiang G, Tan Y, Wang J, Liao X. Coupling a Virulence-Targeting Moiety with Ru-Based AMP Mimics Efficiently Improved Its Anti-Infective Potency and Therapeutic Index. J Med Chem 2023; 66:13304-13318. [PMID: 37704628 DOI: 10.1021/acs.jmedchem.3c01282] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
The surge of antibiotic resistance in Staphylococcus aureus calls for novel drugs that attack new targets. Developing antimicrobial peptides (AMPs) or antivirulence agents (AvAs) is a promising strategy to tackle this challenge. However, AMPs, which kill bacteria by disrupting cell membranes, suffer from low stability and high synthesis cost, while AvAs, which inhibit toxin secretion, have relatively poor bactericidal activity. Here, to address their respective shortcomings, we combined these two different antibacterial activities on the same molecular scaffold and developed a Ru-based metalloantibiotic, termed Ru1. Notably, Ru1 exerted remarkable bactericidal activity (MICS = 460 nM) and attenuated bacterial virulence as well. Mechanistic studies demonstrated that Ru1 had two independent targets: CcpA and bacterial membrane integrity. Based on its dual mechanism of action, Ru1 effectively overcame S. aureus resistance and showed high efficacy in a mouse infection model against S. aureus. This study provides a promising approach to confronting bacterial infections.
Collapse
Affiliation(s)
- Jing Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Yun Song
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Ziying Huang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Wenjing Lin
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Guangying Yu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Yanshi Xiong
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Guijuan Jiang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Yanhui Tan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jintao Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Xiangwen Liao
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| |
Collapse
|
29
|
Lin SH, Yan QX, Zhang Y, Wu TZ, Zou ZB, Liu QM, Jiang JY, Xie MM, Xu L, Hao YJ, Liu Z, Liu GM, Yang XW. Citriquinolinones A and B: Rare Isoquinolinone-Embedded Citrinin Analogues and Related Metabolites from the Deep-Sea-Derived Aspergillus versicolor 170217. Mar Drugs 2023; 21:504. [PMID: 37888439 PMCID: PMC10608187 DOI: 10.3390/md21100504] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023] Open
Abstract
A systematic chemical investigation of the deep-sea-derived fungus Aspergillus versicolor 170217 resulted in the isolation of six new (1-6) and 45 known (7-51) compounds. The structures of the new compounds were established on the basis of exhaustive analysis of their spectroscopic data and theoretical-statistical approaches including GIAO-NMR, TDDFT-ECD/ORD calculations, DP4+ probability analysis, and biogenetic consideration. Citriquinolinones A (1) and B (2) feature a unique isoquinolinone-embedded citrinin scaffold, representing the first exemplars of a citrinin-isoquinolinone hybrid. Dicitrinones K-L (3-4) are two new dimeric citrinin analogues with a rare CH-CH3 bridge. Biologically, frangula-emodin (32) and diorcinol (17) displayed remarkable anti-food allergic activity with IC50 values of 7.9 ± 3.0 μM and 13.4 ± 1.2 μM, respectively, while diorcinol (17) and penicitrinol A (20) exhibited weak inhibitory activity against Vibrio parahemolyticus, with MIC values ranging from 128 to 256 μM.
Collapse
Affiliation(s)
- Shui-Hua Lin
- Department of Pharmacy, Quanzhou Medical College, 2 Anji Road, Quanzhou 362000, China;
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Qing-Xiang Yan
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Yong Zhang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Tai-Zong Wu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Zheng-Biao Zou
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Qing-Mei Liu
- College of Food and Biological Engineering, Jimei University, 43 Yindou Road, Xiamen 361021, China; (Q.-M.L.); (G.-M.L.)
| | - Jia-Yang Jiang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
- College of Life Sciences, Hainan University, 58 People’s Avenue, Haikou 570228, China;
| | - Ming-Min Xie
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Lin Xu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - You-Jia Hao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Zhu Liu
- College of Life Sciences, Hainan University, 58 People’s Avenue, Haikou 570228, China;
| | - Guang-Ming Liu
- College of Food and Biological Engineering, Jimei University, 43 Yindou Road, Xiamen 361021, China; (Q.-M.L.); (G.-M.L.)
| | - Xian-Wen Yang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| |
Collapse
|
30
|
Zhou Y, Yi Y, Yang J, Zhang H, Liu Q, Wang S, Pu W, Shang R. Anti-methicillin-resistant Staphylococcus aureus activity and safety evaluation of 14-O-[(5-ethoxycarbonyl-4,6-dimethylpyrimidine-2-yl) thioacetyl] mutilin (EDT). Sci Rep 2023; 13:15267. [PMID: 37709940 PMCID: PMC10502144 DOI: 10.1038/s41598-023-42621-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/12/2023] [Indexed: 09/16/2023] Open
Abstract
Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) have threated the public health worldwide, which emphasizes the urgent need for new drugs with novel mechanism of actions. 14-O-[(5-ethoxycarbonyl-4,6-dimethylpyrimidine-2-yl) thioacetyl] mutilin (EDT) is a pleuromutilin compound with high activity against several Gram-positive bacteria in vitro and in vivo. This study aimed to verifying the potential anti-MRSA activity and evaluating the safety of EDT. In in vitro antibacterial activity assays, EDT exhibited potent antibacterial activity against MRSA isolated from clinic (minimum inhibitory concentration = 0.0313-0.125 μg/mL), increased post-antibiotic effect (PAE) values and limited potential for the development of resistance. Docking model and green fluorescent protein (GFP) inhibition assay further elucidated the higher antibacterial activities of EDT via mechanism of action. In safety evaluation, EDT exhibited low cytotoxic effect and acute oral toxicity in mice and avoided to significantly increase the number of revertant colonies of six tested strains in the Ames study. Furthermore, EDT displayed a moderate inhibitory effect on CYP3A4 and moderate stability in mouse and human liver microsomes, providing a promising agent for the development of new antimicrobial candidate.
Collapse
Affiliation(s)
- Yuhang Zhou
- Key Laboratory of New Animal Drug Project, Gansu Province/Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs/Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, No. 335, Qilihe District, Lanzhou, 730050, People's Republic of China
| | - Yunpeng Yi
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Institute of Poultry Science, Shandong Academy of Agricultural Science, Jinan, 250023, People's Republic of China
| | - Jing Yang
- Gansu Analysis and Research Center, Lanzhou, 730000, People's Republic of China
| | - Hongjuan Zhang
- Key Laboratory of New Animal Drug Project, Gansu Province/Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs/Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, No. 335, Qilihe District, Lanzhou, 730050, People's Republic of China
| | - Qinqin Liu
- Key Laboratory of New Animal Drug Project, Gansu Province/Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs/Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, No. 335, Qilihe District, Lanzhou, 730050, People's Republic of China
| | - Shengyi Wang
- Key Laboratory of New Animal Drug Project, Gansu Province/Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs/Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, No. 335, Qilihe District, Lanzhou, 730050, People's Republic of China
| | - Wanxia Pu
- Key Laboratory of New Animal Drug Project, Gansu Province/Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs/Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, No. 335, Qilihe District, Lanzhou, 730050, People's Republic of China
| | - Ruofeng Shang
- Key Laboratory of New Animal Drug Project, Gansu Province/Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs/Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, No. 335, Qilihe District, Lanzhou, 730050, People's Republic of China.
| |
Collapse
|
31
|
Ganesan N, Mishra B, Felix L, Mylonakis E. Antimicrobial Peptides and Small Molecules Targeting the Cell Membrane of Staphylococcus aureus. Microbiol Mol Biol Rev 2023; 87:e0003722. [PMID: 37129495 PMCID: PMC10304793 DOI: 10.1128/mmbr.00037-22] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Abstract
Clinical management of Staphylococcus aureus infections presents a challenge due to the high incidence, considerable virulence, and emergence of drug resistance mechanisms. The treatment of drug-resistant strains, such as methicillin-resistant S. aureus (MRSA), is further complicated by the development of tolerance and persistence to antimicrobial agents in clinical use. To address these challenges, membrane disruptors, that are not generally considered during drug discovery for agents against S. aureus, should be explored. The cell membrane protects S. aureus from external stresses and antimicrobial agents, but membrane-targeting antimicrobial agents are probably less likely to promote bacterial resistance. Nontypical linear cationic antimicrobial peptides (AMPs), highly modified AMPs such as daptomycin (lipopeptide), bacitracin (cyclic peptide), and gramicidin S (cyclic peptide), are currently in clinical use. Recent studies have demonstrated that AMPs and small molecules can penetrate the cell membrane of S. aureus, inhibit phospholipid biosynthesis, or block the passage of solutes between the periplasm and the exterior of the cell. In addition to their primary mechanism of action (MOA) that targets the bacterial membrane, AMPs and small molecules may also impact bacteria through secondary mechanisms such as targeting the biofilm, and downregulating virulence genes of S. aureus. In this review, we discuss the current state of research into cell membrane-targeting AMPs and small molecules and their potential mechanisms of action against drug-resistant physiological forms of S. aureus, including persister cells and biofilms.
Collapse
Affiliation(s)
- Narchonai Ganesan
- Infectious Diseases Division, Alpert Medical School, Brown University, Providence, Rhode Island, USA
| | - Biswajit Mishra
- Infectious Diseases Division, Alpert Medical School, Brown University, Providence, Rhode Island, USA
- Department of Medicine, The Miriam Hospital, Providence, Rhode Island, USA
| | - LewisOscar Felix
- Infectious Diseases Division, Alpert Medical School, Brown University, Providence, Rhode Island, USA
| | - Eleftherios Mylonakis
- Infectious Diseases Division, Alpert Medical School, Brown University, Providence, Rhode Island, USA
- Department of Medicine, Houston Methodist Hospital, Houston, Texas, USA
| |
Collapse
|
32
|
Huang YJ, Zhong XL, Zang YP, Yang MH, Lin J, Chen WM. 3-Hydroxy-pyridin-4(1H)-ones as siderophores mediated delivery of isobavachalcone enhances antibacterial activity against pathogenic Pseudomonas aeruginosa. Eur J Med Chem 2023; 257:115454. [PMID: 37210837 DOI: 10.1016/j.ejmech.2023.115454] [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: 03/16/2023] [Revised: 04/24/2023] [Accepted: 05/03/2023] [Indexed: 05/23/2023]
Abstract
The natural prenylated chalcone isobavachalcone (IBC) shows good antibacterial activity against Gram-positive bacteria but is ineffective against Gram-negative bacteria, most likely due to the outer membrane barrier of Gram-negative bacteria. The Trojan horse strategy has been shown to be an effective strategy to overcome the reduction in the permeability of the outer membrane of Gram-negative bacteria. In this study, eight different 3-hydroxy-pyridin-4(1H)-one-isobavachalcone conjugates were designed and synthesized based on the siderophore Trojan horse strategy. The conjugates exhibited 8- to 32-fold lower minimum inhibitory concentrations (MICs) and 32- to 177-fold lower half-inhibitory concentrations (IC50s) against Pseudomonas aeruginosa PAO1 as well as clinical multidrug-resistant (MDR) strains compared to the parent IBC under iron limitation. Further studies showed that the antibacterial activity of the conjugates was regulated by the bacterial iron uptake pathway under different iron concentration conditions. Studies on the antibacterial mechanism of conjugate 1b showed that it exerts antibacterial activity by disrupting cytoplasmic membrane integrity and inhibiting cell metabolism. Finally, conjugate 1b showed a lower cytotoxic effects on Vero cells than IBC and a positive therapeutic effect in the treatment of bacterial infections caused by Gram-negative bacteria PAO1. Overall, this work demonstrates that IBC can be delivered to Gram-negative bacteria when combined with 3-hydroxy-pyridin-4(1H)-ones as siderophores and provides a scientific basis for the development of effective antibacterial agents against Gram-negative bacteria.
Collapse
Affiliation(s)
- Yong-Jun Huang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Xiao-Lin Zhong
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Yi-Peng Zang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Ming-Han Yang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China
| | - Jing Lin
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China.
| | - Wei-Min Chen
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, #855 Xingye Avenue, Guangzhou, 511400, China.
| |
Collapse
|
33
|
Jadimurthy R, Jagadish S, Nayak SC, Kumar S, Mohan CD, Rangappa KS. Phytochemicals as Invaluable Sources of Potent Antimicrobial Agents to Combat Antibiotic Resistance. Life (Basel) 2023; 13:life13040948. [PMID: 37109477 PMCID: PMC10145550 DOI: 10.3390/life13040948] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/04/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023] Open
Abstract
Plants have been used for therapeutic purposes against various human ailments for several centuries. Plant-derived natural compounds have been implemented in clinics against microbial diseases. Unfortunately, the emergence of antimicrobial resistance has significantly reduced the efficacy of existing standard antimicrobials. The World Health Organization (WHO) has declared antimicrobial resistance as one of the top 10 global public health threats facing humanity. Therefore, it is the need of the hour to discover new antimicrobial agents against drug-resistant pathogens. In the present article, we have discussed the importance of plant metabolites in the context of their medicinal applications and elaborated on their mechanism of antimicrobial action against human pathogens. The WHO has categorized some drug-resistant bacteria and fungi as critical and high priority based on the need to develope new drugs, and we have considered the plant metabolites that target these bacteria and fungi. We have also emphasized the role of phytochemicals that target deadly viruses such as COVID-19, Ebola, and dengue. Additionally, we have also elaborated on the synergetic effect of plant-derived compounds with standard antimicrobials against clinically important microbes. Overall, this article provides an overview of the importance of considering phytogenous compounds in the development of antimicrobial compounds as therapeutic agents against drug-resistant microbes.
Collapse
Affiliation(s)
- Ragi Jadimurthy
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore 570006, India
| | - Swamy Jagadish
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore 570006, India
| | - Siddaiah Chandra Nayak
- Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore 570006, India
| | - Sumana Kumar
- Department of Microbiology, Faculty of Life Sciences, JSS Academy of Higher Education and Research, Mysore 570015, India
| | | | | |
Collapse
|
34
|
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.
Collapse
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.
| |
Collapse
|
35
|
Bhattacharjee B, Basak M, Das G, Ramesh A. Quinoxaline-based membrane-targeting therapeutic material: Implications in rejuvenating antibiotic and curb MRSA invasion in an in vitro bone cell infection model. BIOMATERIALS ADVANCES 2023; 148:213359. [PMID: 36963341 DOI: 10.1016/j.bioadv.2023.213359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 02/04/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023]
Abstract
Manifestation of resistance in methicillin-resistant Staphylococcus aureus (MRSA) against multiple antibiotics demands an effective strategy to counter the menace of the pathogen. To address this challenge, the current study explores quinoxaline-based synthetic ligands as an adjuvant material to target MRSA in a combination therapy regimen. Amongst the tested ligands (C1-C4), only C2 was bactericidal against the MRSA strain S. aureus 4 s, with a minimum inhibitory concentration (MIC) of 32 μM. C2 displayed a membrane-directed activity and could effectively hinder MRSA biofilm formation. A quantitative real-time polymerase chain reaction (qRT-PCR) analysis indicated that C2 downregulated expression of the regulator gene agrC and reduced the fold change in the expression of adhesin genes fnbA and cnbA in MRSA in a dose-dependent manner. C2 enabled a 4-fold reduction in the MIC of ciprofloxacin (CPX) and in presence of 10 μM C2 and 8.0 μM CPX, growth of MRSA was arrested. Furthermore, a combination of 10 μM C2 and 12 μM CPX could strongly inhibit MRSA biofilm formation and reduce biofilm metabolic activity. The minimum biofilm inhibitory concentration (MBIC) of CPX against S. aureus 4 s biofilm was reduced and a synergy resulted between C2 and CPX. In a combinatorial treatment regimen, C2 could prevent emergence of CPX resistance and arrest growth of MRSA till 360 generations. C2 could also be leveraged in combination treatment (12 μM CPX and 10 μM C2) to target MRSA in an in vitro bone cell infection model, wherein MRSA cell adhesion and invasion onto cultured MG-63 cells was only ~17 % and ~ 0.37 %, respectively. The combinatorial treatment regimen was also biocompatible as the viability of MG-63 cells was high (~ 91 %). Thus, C2 is a promising adjuvant material to counter antibiotic-refractory therapy and mitigate MRSA-mediated bone cell infection.
Collapse
Affiliation(s)
- Basu Bhattacharjee
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Megha Basak
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Gopal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Aiyagari Ramesh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| |
Collapse
|
36
|
Xia J, Xin L, Li J, Tian L, Wu K, Zhang S, Yan W, Li H, Zhao Q, Liang C. Discovery of Quaternized Pyridine-Thiazole-Pleuromutilin Derivatives with Broad-Spectrum Antibacterial and Potent Anti-MRSA Activity. J Med Chem 2023; 66:5061-5078. [PMID: 37051724 DOI: 10.1021/acs.jmedchem.2c02135] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The quaternization of compounds has emerged as a promising molecular design strategy for the development of antibiotics. Herein, we report the design, synthesis, antibacterial activities, and structure-activity relationships of a series of novel pleuromutilin derivatives containing a quaternary amine C-14 side chain. Most of these derivatives exhibited broad-spectrum antibacterial activity against the tested bacteria. 10b was the most effective antibacterial agent that displayed excellent antibacterial activity against five clinical methicillin-resistant Staphylococcus aureus (MRSA) isolates, remarkable antimycoplasma activity, rapid bactericidal effects, and a strong ability to damage bacterial biofilms. Further mechanistic studies indicated that 10b destroyed bacterial cell membranes to exert its antibacterial effects. Moreover, 10b exhibited high survival protection and potent in vivo antibacterial efficacy (ED50 = 4.94 mg/kg) in a mouse model of systemic MRSA infection. These findings suggest that 10b is a promising candidate for the treatment of multi-drug-resistant infectious diseases, especially MRSA infections.
Collapse
Affiliation(s)
- Juan Xia
- Laboratory of Hematologic Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, P. R. China
| | - Liang Xin
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Jingyi Li
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Lei Tian
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Kangxiong Wu
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Shaojun Zhang
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Wenjing Yan
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Han Li
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Qianqian Zhao
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| | - Chengyuan Liang
- School of Biology and Medicine, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
| |
Collapse
|
37
|
Zhou XM, Hu YY, Fang B, Zhou CH. Benzenesulfonyl thiazoloimines as unique multitargeting antibacterial agents towards Enterococcus faecalis. Eur J Med Chem 2023; 248:115088. [PMID: 36623329 DOI: 10.1016/j.ejmech.2023.115088] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/26/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023]
Abstract
New efficient antimicrobial agents are urgently needed to combat invasive multidrug-resistant pathogens infections. Structurally unique benzenesulfonyl thiazoloimines (BSTIs) were exploited as novel potential antibacterial victors to confront terrific drug resistance. Some developed BSTIs exerted effectively antimicrobial efficacy against the tested strains. Notably, 2-pyridyl BSTI 14d exhibited good antibacterial activity against E. faecalis with MIC value of 1 μg/mL, which was superior to sulfathiazole and norfloxacin. The most active compound 14d not only showed rapid bactericidal properties and impeded E. faecalis biofilm formation to effectually relieve the development of drug resistance, but also performed low toxicity toward human red blood cells, human normal squamous epithelial cells and human non-neoplastic colon epithelial cells. Mechanistic investigation demonstrated that molecule 14d could exert efficient membrane destruction leading to the leakage of intracellular materials and metabolism inhibition, cause oxidative damage of E. faecalis through accumulation of excess reactive oxygen species and reduction of glutathione activity, and intercalate into DNA to hinder replication of DNA. Molecular docking indicated that the formation of 14d-dihydrofolate synthetase supramolecular complex could hinder the function of this enzyme. ADME analysis displayed that compound 14d possessed promising pharmacokinetic properties. These findings suggested that the newly developed benzenesulfonyl thiazoloimines with multitargeting antibacterial potential provided a new possibility for evading resistance.
Collapse
Affiliation(s)
- Xue-Mei Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yuan-Yuan Hu
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Bo Fang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing, 402160, PR China.
| | - Cheng-He Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
| |
Collapse
|
38
|
Roenfanz HF, Ochoa CR, Kozlowski MC. Modifications to a Biphenolic Antibacterial Compound: Activity against ESKAPE Pathogens. ChemMedChem 2023; 18:e202200521. [PMID: 36461692 PMCID: PMC9851968 DOI: 10.1002/cmdc.202200521] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/01/2022] [Indexed: 11/06/2022]
Abstract
Forty-four analogs of honokiol, a compound with known antibacterial activity, especially with respect to oral bacteria, were synthesized to explore the structure-activity relationships against the ESKAPE pathogens. Compounds with high therapeutic indices (hemolysis20 /MIC) were identified. In particular, ester-linked compounds that would be less than environmentally durable than biaryl ether antibacterials such as the broadly used triclosan were found to be active. MRSA mutants could be generated against some, but not all, of the highly active compounds. Based on gene sequencing results, membrane permeability, intracellular sodium, and intracellular pH assays revealed overlapping mechanisms of action.
Collapse
Affiliation(s)
- Hanna F Roenfanz
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA 19104, USA
| | - Cristian R Ochoa
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA 19104, USA
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA 19104, USA
| |
Collapse
|
39
|
Cheng W, Xu T, Cui L, Xue Z, Liu J, Yang R, Qin S, Guo Y. Discovery of Amphiphilic Xanthohumol Derivatives as Membrane-Targeting Antimicrobials against Methicillin-Resistant Staphylococcus aureus. J Med Chem 2023; 66:962-975. [PMID: 36584344 DOI: 10.1021/acs.jmedchem.2c01793] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Infections caused by multidrug-resistant (MDR) bacteria are increasing worldwide, and with limited clinically available antibiotics, it is urgent to develop new antimicrobials to combat these MDR bacteria. Here, a class of novel amphiphilic xanthohumol derivatives were prepared using a building-block approach. Bioactivity assays showed that the molecule IV15 not only exhibited a remarkable antibacterial effect against clinical methicillin-resistant Staphylococcus aureus (MRSA) isolates (MICs: 1-2 μg/mL) but also had the advantages of rapid bactericidal properties, low toxicity, good plasma stability, and not readily inducing bacterial resistance. Mechanistic studies indicated that IV15 has good membrane-targeting ability and can bind to phosphatidylglycerol and cardiolipin in bacterial membranes, thus disrupting the bacterial cell membranes and causing increased intracellular reactive oxygen species and leakage of proteins and DNA, eventually resulting in bacterial death. Notably, IV15 exhibited remarkable in vivo anti-MRSA efficacy, superior to vancomycin, making it a potential candidate to combat MRSA infections.
Collapse
Affiliation(s)
- Wanqing Cheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ting Xu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Liping Cui
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Zihan Xue
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Jifeng Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ruige Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China.,Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan Province, China
| |
Collapse
|
40
|
Yang R, Hou E, Cheng W, Yan X, Zhang T, Li S, Yao H, Liu J, Guo Y. Membrane-Targeting Neolignan-Antimicrobial Peptide Mimic Conjugates to Combat Methicillin-Resistant Staphylococcus aureus (MRSA) Infections. J Med Chem 2022; 65:16879-16892. [PMID: 36512751 DOI: 10.1021/acs.jmedchem.2c01674] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) continue to endanger public health. Here, we report the synthesis of neolignan isomagnolone (I) and its isomer II, and the preparation of a series of novel neolignan-antimicrobial peptide (AMP) mimic conjugates. Notably, conjugates III5 and III15 exhibit potent anti-MRSA activity in vitro and in vivo, comparable to that of vancomycin, a current effective treatment for MRSA. Moreover, III5 and III15 display not only fast-killing kinetics and low resistance frequency but also low toxicity as well as effects on bacterial biofilms. Mechanism studies reveal that III5 and III15 exhibit rapid bactericidal effects through binding to the phosphatidylglycerol (PG) and cardiolipin (CL) of the bacterial membrane, thereby disrupting the cell membranes and allowing increased reactive oxygen species (ROS) as well as protein and DNA leakage. The results indicate that these neolignan-AMP mimic conjugates could be promising antimicrobial candidates for combating MRSA infections.
Collapse
Affiliation(s)
- Ruige Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Enhua Hou
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wanqing Cheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xiaoting Yan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Tingting Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Shihong Li
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China
| | - Hong Yao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China
| | - Jifeng Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| |
Collapse
|
41
|
Yang R, Liu Z, Han M, Cui L, Guo Y. Preparation and Biological Evaluation of Novel Osthole-Derived N-Benzoylthioureas as Insecticide Candidates. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:15737-15746. [PMID: 36508570 DOI: 10.1021/acs.jafc.2c06558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
To discover novel natural-product-based insecticide candidates, herein, a variety of osthole-derived N-benzoylthioureas were synthesized and assessed for their insecticidal activities against three insect pests. An insecticidal assay showed that most of the target osthole-derived N-benzoylthioureas displayed a more potent and broad-spectrum insecticidal effect than the parent osthole after the introduction of N-benzoylthioureas on the C-3' position of osthole. Compound B24 displayed the most potent growth inhibitory (GI) effect on Mythimna separata Walker, with a final corrected mortality rate of 82.1% when treated with a concentration of 1 mg/mL, which was 1.64- and 1.53-fold higher in comparison to osthole and the botanical insecticide toosendanin, respectively. Compounds B22, B23, and B25 displayed a more promising aphicidal effect on Myzus persicae Sulzer, and their LD50 values were 0.015, 0.017, and 0.019 μg/larvae, respectively, superior to the commercially available insecticide rotenone (0.024 μg/larvae). Derivatives B19, B20, B23, and B25 displayed more potent larvicidal activity against Plutella xylostella Linnaeus, with LC50 values of 0.22, 0.26, 0.15, and 0.30 mg/mL, respectively, exceeding that of rotenone (0.37 mg/mL). Furthermore, both compounds B19 and B23 against P. xylostella were found to be more effective than rotenone in a control efficacy assay under greenhouse conditions. The structure-activity relationship (SAR) suggested that osthole-derived N-benzoylthioureas are more active in most cases when the R group is an electron-withdrawing group than when it is an electron-donating group, especially for halogenated groups. Additionally, the potent compounds B19 and B23 possessed good selectivity and were less toxic to non-target organisms. This study suggests that these osthole-derived N-benzoylthioureas could be further studied in depth as eco-friendly natural product pesticides in crop protection.
Collapse
Affiliation(s)
- Ruige Yang
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People's Republic of China
| | - Zhiyan Liu
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People's Republic of China
| | - Meiyue Han
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People's Republic of China
| | - Liping Cui
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People's Republic of China
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People's Republic of China
| |
Collapse
|
42
|
Xie MM, Jiang JY, Zou ZB, Xu L, Zhang Y, Wang CF, Liu CB, Yan QX, Liu Z, Yang XW. Chemical Constituents of the Deep-Sea-Derived Fungus Cladosporium oxysporum 170103 and Their Antibacterial Effects. Chem Biodivers 2022; 19:e202200963. [PMID: 36436828 DOI: 10.1002/cbdv.202200963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/08/2022] [Indexed: 11/29/2022]
Abstract
The Cladosporium fungi, one of the largest genera of dematiaceous hyphomycetes, could produce various bioactive secondary metabolites. From the AcOEt-soluble extract of Cladosporium oxysporum 170103, three new secopatulolides (1-3) and thirteen known compounds (4-16) were obtained. Their structures were established by detailed analysis of the NMR and HR-ESI-MS data. All sixteen compounds were tested for antibacterial activity against Vibrio parahemolyticus, ergosterol (10) presented moderate effect with the minimum inhibitory concentration (MIC) of 32 μM. It can destruct the membrane integrity of Vibrio parahemolyticus to change the cell shape.
Collapse
Affiliation(s)
- Ming-Min Xie
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Jia-Yang Jiang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China.,College of Life Sciences, Hainan University, 58 People's Avenue, Haikou, Hainan 570228, China
| | - Zheng-Biao Zou
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Lin Xu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Yong Zhang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Chao-Feng Wang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Cheng-Bin Liu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Qing-Xiang Yan
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Zhu Liu
- College of Life Sciences, Hainan University, 58 People's Avenue, Haikou, Hainan 570228, China
| | - Xian-Wen Yang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| |
Collapse
|
43
|
Chu J, Yang R, Cheng W, Cui L, Pan H, Liu J, Guo Y. Semisynthesis, biological activities, and mechanism studies of Mannich base analogues of magnolol/honokiol as potential α-glucosidase inhibitors. Bioorg Med Chem 2022; 75:117070. [PMID: 36327695 DOI: 10.1016/j.bmc.2022.117070] [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: 08/18/2022] [Revised: 10/09/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022]
Abstract
Magnolol and honokiol, derived from a Magnolia officinalis Rehd. et Wils, are a class of natural biphenolic lignans. Currently, the discovery of new α-glucosidase inhibitors from natural analogues is of interest. Here, four series of thirty new Mannich base analogues of magnolol/honokiol were prepared and evaluated for their α-glucosidase inhibitory activities. Among these Mannich base analogues of magnolol/honokiol, 3k and 3l exhibited more potent inhibitory effects on α-glucosidase than the reference drug acarbose, and their IC50 values were 14.94 ± 0.17 µM and 13.78 ± 1.42 µM, respectively. Some interesting structure-activity relationships (SARs) were also analyzed. The enzyme inhibition kinetics indicated that 3k and 3l were noncompetitive inhibitors. This result was in agreement with molecular docking studies, where the binding sites of 3k and 3l to α-glucosidase were different from that of the competitive inhibitor acarbose to α-glucosidase. Moverover, compounds 3k and 3l exhibited low toxicity to normal cells (LO2). Thus, analogues 3k and 3l could be deeply developed for the discovery of natural products based antidiabetic candidates.
Collapse
Affiliation(s)
- Junyan Chu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Ruige Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Wanqing Cheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Liping Cui
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Hanchen Pan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Jifeng Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China.
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China.
| |
Collapse
|
44
|
Jiang XY, Ren ZY, Zhang NK, Yang KC, Wang GX, Jiang HF. Screening and evaluating honokiol from Magnolia officinalis against Nocardia seriolae infection in largemouth bass (Micropterus Salmoides). JOURNAL OF FISH DISEASES 2022; 45:1599-1607. [PMID: 35801398 DOI: 10.1111/jfd.13683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Nocardiosis caused by Nocardia seriolae is a major threat to the aquaculture industry. Given that prolonged therapy administration can lead to a growth of antibiotic resistant strains, new antibacterial agents and alternative strategies are urgently needed. In this study, 80 medicinal plants were selected for antibacterial screening to obtain potent bioactive compounds against N. seriolae infection. The methanolic extracts of Magnolia officinalis exhibited the strongest antibacterial activity against N. seriolae with the minimal inhibitory concentration (MIC) of 12.5 μg/ml. Honokiol and magnolol as the main bioactive components of M. officinalis showed higher activity with the MIC value of 3.12 and 6.25 μg/ml, respectively. Sequentially, the evaluation of antibacterial activity of honokiol in vivo showed that honokiol had good biosafety, and could significantly reduce the bacterial load of nocardia-infected largemouth bass (p < .001). Furthermore, the survival rate of nocardia-infected fish fed with 100 mg/kg honokiol was obviously improved (p < .05). Collectively, these results suggest that medicinal plants represent a promising reservoir for discovering active components against Nocardia, and honokiol has great potential to be developed as therapeutic agents to control nocardiosis in aquaculture.
Collapse
Affiliation(s)
- Xin-Yuan Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Zong-Yi Ren
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Nian-Kun Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Ke-Chen Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Gao-Xue Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Hai-Feng Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| |
Collapse
|
45
|
Schultz JR, Costa SK, Jachak GR, Hegde P, Zimmerman M, Pan Y, Josten M, Ejeh C, Hammerstad T, Sahl HG, Pereira PM, Pinho MG, Dartois V, Cheung A, Aldrich CC. Identification of 5-(Aryl/Heteroaryl)amino-4-quinolones as Potent Membrane-Disrupting Agents to Combat Antibiotic-Resistant Gram-Positive Bacteria. J Med Chem 2022; 65:13910-13934. [PMID: 36219779 PMCID: PMC9826610 DOI: 10.1021/acs.jmedchem.2c01151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nosocomial infections caused by resistant Gram-positive organisms are on the rise, presumably due to a combination of factors including prolonged hospital exposure, increased use of invasive procedures, and pervasive antibiotic therapy. Although antibiotic stewardship and infection control measures are helpful, newer agents against multidrug-resistant (MDR) Gram-positive bacteria are urgently needed. Here, we describe our efforts that led to the identification of 5-amino-4-quinolone 111 with exceptionally potent Gram-positive activity with minimum inhibitory concentrations (MICs) ≤0.06 μg/mL against numerous clinical isolates. Preliminary mechanism of action and resistance studies demonstrate that the 5-amino-4-quinolones are bacteriostatic, do not select for resistance, and selectively disrupt bacterial membranes. While the precise molecular mechanism has not been elucidated, the lead compound is nontoxic displaying a therapeutic index greater than 500, is devoid of hemolytic activity, and has attractive physicochemical properties (clog P = 3.8, molecular weight (MW) = 441) that warrant further investigation of this promising antibacterial scaffold for the treatment of Gram-positive infections.
Collapse
Affiliation(s)
- John R Schultz
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Stephen K Costa
- Department of Microbiology & Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire 03755, United States
| | - Gorakhnath R Jachak
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Pooja Hegde
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Matthew Zimmerman
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | - Yan Pan
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | - Michaele Josten
- Institute for Pharmaceutical Microbiology and Institute for Medical Microbiology, Immunology, and Parasitology, University of Bonn, D-53115 Bonn, Germany
| | - Chinedu Ejeh
- Department of Microbiology & Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire 03755, United States
| | - Travis Hammerstad
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Hans Georg Sahl
- Institute for Pharmaceutical Microbiology and Institute for Medical Microbiology, Immunology, and Parasitology, University of Bonn, D-53115 Bonn, Germany
| | - Pedro M Pereira
- Bacterial Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2781-901 Oeiras, Portugal
| | - Mariana G Pinho
- Bacterial Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2781-901 Oeiras, Portugal
| | - Véronique Dartois
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | - Ambrose Cheung
- Department of Microbiology & Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire 03755, United States
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
46
|
Jiang L, Ma Y, Xiong Y, Tan Y, Duan X, Liao X, Wang J. Ruthenium polypyridine complexes with triphenylamine groups as antibacterial agents against Staphylococcus aureus with membrane-disruptive mechanism. Front Chem 2022; 10:1035741. [PMID: 36300021 PMCID: PMC9589286 DOI: 10.3389/fchem.2022.1035741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 09/20/2022] [Indexed: 11/21/2022] Open
Abstract
Due to the emergence and wide spread of methicillin-resistant Staphylococcus aureus, the treatment of this kind of infection becomes more and more difficult. To solve the problem of drug resistance, it is urgent to develop new antibiotics to avoid the most serious situation of no drug available. Three new Ru complexes [Ru (dmob)2PMA] (PF6)2 (Ru-1) [Ru (bpy)2PMA] (PF6)2 (Ru-2) and [Ru (dmb)2PMA] (PF6)2 (Ru-3) (dmob = 4,4′-dimethoxy-2,2′-bipyridine, bpy = 2,2′-bipyridine, dmb = 4,4′-dimethyl-2,2′-bipyridine and PMA = N-(4-(1H-imidazo [4,5-f] [1,10] phenanthrolin-2-yl) -4-methyl-N-(p-tolyl) aniline) were synthesized and characterized by 1H NMR, 13C NMR and HRMS. The detailed molecular structure of Ru-3 was determined by single crystal X-ray diffraction. Their antibacterial activities against Staphylococcus aureus (Staphylococcus aureus) were obvious and Ru-3 showed the best antibacterial effect with the minimum inhibitory concentration value of 4 μg ml−1. Therefore, further study on its biological activity showed that Ru-3 can effectively inhibit the formation of biofilm and destroy cell membrane. In vitro hemolysis test showed that Ru-3 has almost negligible cytotoxicity to mammalian red blood cells. In the toxicity test of wax moth insect model, Ru-3 exhibited low toxicity in vivo. These results, combined with histopathological studies, strongly suggest that Ru-3 was almost non-toxic. In addition, the synergistic effect of Ru-3 with common antibiotics such as ampicillin, chloramphenicol, tetracycline, kanamycin and gentamicin on Staphylococcus aureus was detected by chessboard method. Finally, in vivo results revealed that Ru-3 could obviously promote the wound healing of Staphylococcus aureus infected mice.
Collapse
Affiliation(s)
- Li Jiang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Yuanyuan Ma
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Yanshi Xiong
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Yanhui Tan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, China
| | - Xuemin Duan
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
- *Correspondence: Jintao Wang, ; Xuemin Duan, ; Xiangwen Liao,
| | - Xiangwen Liao
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
- *Correspondence: Jintao Wang, ; Xuemin Duan, ; Xiangwen Liao,
| | - Jintao Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
- *Correspondence: Jintao Wang, ; Xuemin Duan, ; Xiangwen Liao,
| |
Collapse
|
47
|
ChunYan Z, RuJian Y, LiQiang W, HaiYan H, JinTao W, XiangWen L, XueMin D, YanShi X. Design, synthesis, and evaluation of aryl-thioether ruthenium polypyridine complexes: A multi-target antimicrobial agents against gram-positive bacteria. Eur J Med Chem 2022; 240:114562. [DOI: 10.1016/j.ejmech.2022.114562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/28/2022] [Accepted: 06/20/2022] [Indexed: 11/15/2022]
|
48
|
Dan W, Gao J, Qi X, Wang J, Dai J. Antibacterial quaternary ammonium agents: Chemical diversity and biological mechanism. Eur J Med Chem 2022; 243:114765. [PMID: 36116235 DOI: 10.1016/j.ejmech.2022.114765] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 01/04/2023]
Abstract
Bacterial infections have seriously threatened public health especially with the increasing resistance and the cliff-like decline of the number of newly approved antibacterial agents. Quaternary ammonium compounds (QACs) possess potent medicinal properties with 95 successfully marketed drugs, which also have a long history as antibacterial agents. In this review, we summarize the chemical diversity of antibacterial QACs, divided into chain-like and aromatic ring, reported over the past decade (2012 to mid-2022). Additionally, the structure-activity relationships, mainly covering hydrophobicity, charges and skeleton features, are discussed. In the cases where sufficient information is available, antibacterial mechanisms including biofilm, cell membrane, and intracellular targets are presented. It is hoped that this review will provide sufficient information for medicinal chemists to discover the new generation of antibacterial agents based on QACs.
Collapse
Affiliation(s)
- Wenjia Dan
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Jixiang Gao
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Xiaohui Qi
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Junru Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Shaanxi, China.
| | - Jiangkun Dai
- School of Life Science and Technology, Weifang Medical University, Shandong, China.
| |
Collapse
|
49
|
Wang L, Liu L, Wang X, Tan Y, Duan X, Zhang C, Cheng J, Xiong Y, Jiang G, Wang J, Liao X. Ruthenium(II) complexes targeting membrane as biofilm disruptors and resistance breakers in Staphylococcus aureus bacteria. Eur J Med Chem 2022; 238:114485. [DOI: 10.1016/j.ejmech.2022.114485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/17/2022] [Accepted: 05/17/2022] [Indexed: 11/29/2022]
|
50
|
Xu T, Meng JR, Cheng W, Liu JZ, Chu J, Zhang Q, Ma N, Bai LP, Guo Y. Discovery of honokiol thioethers containing 1,3,4-oxadiazole moieties as potential α-glucosidase and SARS-CoV-2 entry inhibitors. Bioorg Med Chem 2022; 67:116838. [PMID: 35617790 PMCID: PMC9123836 DOI: 10.1016/j.bmc.2022.116838] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 11/26/2022]
Abstract
Honokiol, isolated from a traditional Chinese medicine (TCM) Magnolia officinalis, is a biphenolic compound with several biological activities. To improve and broaden its biological activity, herein, two series of honokiol thioethers bearing 1,3,4-oxadiazole moieties were prepared and assessed for their α-glucosidase and SARS-CoV-2 entry inhibitory activities. Among all the honokiol thioethers, compound 7l exhibited the strongest α-glucosidase inhibitory effect with an IC50 value of 18.9 ± 2.3 µM, which was superior to the reference drug acarbose (IC50 = 24.4 ± 0.3 µM). Some interesting results of structure–activity relationships (SARs) have also been discussed. Enzyme kinetic study demonstrated that 7l was a noncompetitive α-glucosidase inhibitor, which was further supported by the results of molecular docking. Moreover, honokiol thioethers 7e, 9a, 9e, and 9r exhibited potent antiviral activity against SARS-CoV-2 pseudovirus entering into HEK-293 T-ACE2h. Especially 9a displayed the strongest inhibitory activity against SARS-CoV-2 pseudovirus entry with an IC50 value of 16.96 ± 2.45 μM, which was lower than the positive control Evans blue (21.98 ± 1.98 μM). Biolayer interferometry (BLI) binding and docking studies suggested that 9a and 9r may effectively block the binding of SARS-CoV-2 to the host ACE2 receptor through dual recognition of SARS-CoV-2 spike RBD and human ACE2. Additionally, the potent honokiol thioethers 7l, 9a, and 9r displayed relatively no cytotoxicity to normal cells (LO2). These findings will provide a theoretical basis for the discovery of honokiol derivatives as potential both α-glucosidase and SARS-CoV-2 entry inhibitors.
Collapse
Affiliation(s)
- Ting Xu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China; State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa, Macau
| | - Jie-Ru Meng
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa, Macau
| | - Wanqing Cheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Jia-Zheng Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa, Macau
| | - Junyan Chu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Qian Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Nannan Ma
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China
| | - Li-Ping Bai
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa, Macau.
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, PR China.
| |
Collapse
|