1
|
Zhang J, Chen S, Liu X, Yu X, Gu N, Li A. Discovery of 1,2,3-triazole-based pleuromutilin derivatives as potent gram-positive antibacterial agents. Bioorg Med Chem Lett 2024; 110:129878. [PMID: 38977107 DOI: 10.1016/j.bmcl.2024.129878] [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: 04/16/2024] [Revised: 06/09/2024] [Accepted: 07/03/2024] [Indexed: 07/10/2024]
Abstract
A novel class of pleuromutilin derivatives possessing 1,2,3-triazole as the linker connected to phenyl analogues were designed. The antibacterial properties of the prepared compounds were assessed in vitro against five strains (E. coli, S. aureus, S. epidermidis, and E. faecalis). Most of the tested compounds displayed potent antibacterial activities against gram-positive bacteria and 14-O-[2-(4-((2,4-dinitrophenoxy)-methyl-1H-1,2,3-triazol-1-yl) acetamide)-2-methylpropan-2-yl) thioacetyl]mutilin (7c) exerted antibacterial activities against S. aureus, MRSA and S. epidermidis with MIC values 0.0625 μg/mL, representing 64-fold, 4-fold and 8-fold higher than tiamulin respectively. Compound 6e, 7c and 8c were chosen to carry out killing kinetics, which exhibited concentration-dependent effect. Subsequently, molecular modeling was conducted to further explore the binding of compound 6e, 7a, 7c, 8c and tiamulin with 50S ribosomal subunit from deinococcus radiodurans. The investigation revealed that the main interactions between compound 7c and the ribosomal residues were three hydrogen bonds, π-π, and p-π conjugate effects. Additionally, the free binding energy and docking score of 7c with the ribosome demonstrated the lowest values of -11.90 kcal/mol and -7.97 kcal/mol, respectively, consistent with its superior antibacterial activities.
Collapse
Affiliation(s)
- Jiahua Zhang
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China
| | - Shaorui Chen
- Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, and College of Science, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
| | - Xiaoya Liu
- Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, and College of Science, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China
| | - Xudong Yu
- Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, and College of Science, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China
| | - Na Gu
- Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, and College of Science, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
| | - Aijun Li
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
| |
Collapse
|
2
|
Ralhan K, Iyer KA, Diaz LL, Bird R, Maind A, Zhou QA. Navigating Antibacterial Frontiers: A Panoramic Exploration of Antibacterial Landscapes, Resistance Mechanisms, and Emerging Therapeutic Strategies. ACS Infect Dis 2024; 10:1483-1519. [PMID: 38691668 PMCID: PMC11091902 DOI: 10.1021/acsinfecdis.4c00115] [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: 02/10/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 05/03/2024]
Abstract
The development of effective antibacterial solutions has become paramount in maintaining global health in this era of increasing bacterial threats and rampant antibiotic resistance. Traditional antibiotics have played a significant role in combating bacterial infections throughout history. However, the emergence of novel resistant strains necessitates constant innovation in antibacterial research. We have analyzed the data on antibacterials from the CAS Content Collection, the largest human-curated collection of published scientific knowledge, which has proven valuable for quantitative analysis of global scientific knowledge. Our analysis focuses on mining the CAS Content Collection data for recent publications (since 2012). This article aims to explore the intricate landscape of antibacterial research while reviewing the advancement from traditional antibiotics to novel and emerging antibacterial strategies. By delving into the resistance mechanisms, this paper highlights the need to find alternate strategies to address the growing concern.
Collapse
Affiliation(s)
| | | | - Leilani Lotti Diaz
- CAS,
A Division of the American Chemical Society, Columbus, Ohio 43210, United States
| | - Robert Bird
- CAS,
A Division of the American Chemical Society, Columbus, Ohio 43210, United States
| | - Ankush Maind
- ACS
International India Pvt. Ltd., Pune 411044, India
| | | |
Collapse
|
3
|
Zhang J, Liu Q, Zhao H, Li G, Yi Y, Shang R. Design and Synthesis of Pleuromutilin Derivatives as Antibacterial Agents Using Quantitative Structure-Activity Relationship Model. Int J Mol Sci 2024; 25:2256. [PMID: 38396934 PMCID: PMC10888563 DOI: 10.3390/ijms25042256] [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: 01/12/2024] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
The quantitative structure-activity relationship (QSAR) is one of the most popular methods for the virtual screening of new drug leads and optimization. Herein, we collected a dataset of 955 MIC values of pleuromutilin derivatives to construct a 2D-QSAR model with an accuracy of 80% and a 3D-QSAR model with a non-cross-validated correlation coefficient (r2) of 0.9836 and a cross-validated correlation coefficient (q2) of 0.7986. Based on the obtained QSAR models, we designed and synthesized pleuromutilin compounds 1 and 2 with thiol-functionalized side chains. Compound 1 displayed the highest antimicrobial activity against both Staphylococcus aureus ATCC 29213 (S. aureus) and Methicillin-resistant Staphylococcus aureus (MRSA), with minimum inhibitory concentrations (MICs) < 0.0625 μg/mL. These experimental results confirmed that the 2D and 3D-QSAR models displayed a high accuracy of the prediction function for the discovery of lead compounds from pleuromutilin derivatives.
Collapse
Affiliation(s)
- Jiaming 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, Lanzhou 730050, China (G.L.)
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Institute of Poultry Science, Shandong Academy of Agricultural Science, Jinan 250023, 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, Lanzhou 730050, China (G.L.)
| | - Haoxia Zhao
- 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, Lanzhou 730050, China (G.L.)
| | - Guiyu Li
- 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, Lanzhou 730050, China (G.L.)
| | - Yunpeng Yi
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Institute of Poultry Science, Shandong Academy of Agricultural Science, Jinan 250023, 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, Lanzhou 730050, China (G.L.)
| |
Collapse
|
4
|
Pan T, Su L, Zhang Y, Yi F, Chen Y. Impact of gut microbiota on nonalcoholic fatty liver disease: insights from a leave-one-out cross-validation study. Front Microbiol 2024; 14:1320279. [PMID: 38260910 PMCID: PMC10801729 DOI: 10.3389/fmicb.2023.1320279] [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: 10/13/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
Introduction Enteric dysbacteriosis is strongly associated with nonalcoholic fatty liver disease (NAFLD). However, the underlying causal relationship remains unknown. Thus, the present study aimed to investigate the relationship between gut microbiota and NAFLD using Mendelian randomization (MR) and analyze the target genes potentially regulated by specific microbiota. Methods Bidirectional two-sample MR analysis was performed using inverse variance weighted (IVW) supplemented by MR-Egger, weighted median, simple mode, and weighted mode methods. Data were pooled from gut microbiota and NAFLD association studies. The least absolute shrinkage, selection operator regression, and the Support Vector Machine algorithm were used to identify genes regulated by these intestinal flora in NAFLD. The liver expression of these genes was verified in methionine choline-deficient (MCD) diet-fed mice. Results IVW results confirmed a causal relationship between eight specific gut microbes and NAFLD. Notably, the order Actinomycetales, NB1n, the family Actinomycetaceae, Oxalobacteraceae and the genus Ruminococcaceae UCG005 were positively correlated, whereas Lactobacillaceae, the Christensenellaceae R7 group, and Intestinibacter were negatively correlated with NAFLD onset. In NAFLD, these eight bacteria regulated four genes: colony-stimulating factor 2 receptor β, fucosyltransferase 2, 17-beta-hydroxysteroid dehydrogenase 14, and microtubule affinity regulatory kinase 3 (MAPK3). All genes, except MARK3, were differentially expressed in the liver tissues of MCD diet-fed mice. Discussion The abundance of eight gut microbiota species and NAFLD progression displayed a causal relationship based on the expression of the four target genes. Our findings contributed to the advancement of intestinal microecology-based diagnostic technologies and targeted therapies for NAFLD.
Collapse
Affiliation(s)
- Tongtong Pan
- Hepatology Diagnosis and Treatment Center, The First Affiliated Hospital of Wenzhou Medical University and Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, Wenzhou, China
| | - Lihuang Su
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yiying Zhang
- Alberta Institute, Wenzhou Medical University, Wenzhou, China
| | - Fangfang Yi
- Hepatology Diagnosis and Treatment Center, The First Affiliated Hospital of Wenzhou Medical University and Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, Wenzhou, China
| | - Yongping Chen
- Hepatology Diagnosis and Treatment Center, The First Affiliated Hospital of Wenzhou Medical University and Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, Wenzhou, China
| |
Collapse
|
5
|
Nazli A, Tao W, You H, He X, He Y. Treatment of MRSA Infection: Where are We? Curr Med Chem 2024; 31:4425-4460. [PMID: 38310393 DOI: 10.2174/0109298673249381231130111352] [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: 02/19/2023] [Revised: 07/10/2023] [Accepted: 10/10/2023] [Indexed: 02/05/2024]
Abstract
Staphylococcus aureus is a leading cause of septicemia, endocarditis, pneumonia, skin and soft tissue infections, bone and joint infections, and hospital-acquired infections. In particular, methicillin-resistant Staphylococcus aureus (MRSA) is associated with high morbidity and mortality, and continues to be a major public health problem. The emergence of multidrug-resistant MRSA strains along with the wide consumption of antibiotics has made anti-MRSA treatment a huge challenge. Novel treatment strategies (e.g., novel antimicrobials and new administrations) against MRSA are urgently needed. In the past decade, pharmaceutical companies have invested more in the research and development (R&D) of new antimicrobials and strategies, spurred by favorable policies. All research articles were collected from authentic online databases, including Google Scholar, PubMed, Scopus, and Web of Science, by using different combinations of keywords, including 'anti-MRSA', 'antibiotic', 'antimicrobial', 'clinical trial', 'clinical phase', clinical studies', and 'pipeline'. The information extracted from articles was compared to information provided on the drug manufacturer's website and Clinical Trials.gov (https://clinicaltrials.gov/) to confirm the latest development phase of anti-MRSA agents. The present review focuses on the current development status of new anti-MRSA strategies concerning chemistry, pharmacological target(s), indications, route of administration, efficacy and safety, pharmacokinetics, and pharmacodynamics, and aims to discuss the challenges and opportunities in developing drugs for anti-MRSA infections.
Collapse
Affiliation(s)
- Adila Nazli
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Wenlan Tao
- Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing, 400714, China
| | - Hengyao You
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Xiaoli He
- Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing, 400714, China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| |
Collapse
|
6
|
Zhang Y, Xie C, Liu Y, Shang F, Shao R, Yu J, Wu C, Yao X, Liu D, Wang Z. Synthesis, biological activities and docking studies of pleuromutilin derivatives with piperazinyl urea linkage. J Enzyme Inhib Med Chem 2021; 36:764-775. [PMID: 33733986 PMCID: PMC7993385 DOI: 10.1080/14756366.2021.1900163] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/25/2021] [Accepted: 03/03/2021] [Indexed: 11/29/2022] Open
Abstract
Antibiotics resistance is becoming increasingly common, involving almost all antibiotics on the market. Diseases caused by drug resistant bacteria, such as MRSA, have high mortality and negatively affect public health. The development of new drugs would be an effective means of solving this problem. Modifications based on bioactive natural products could greatly shorten drug development time and improve success rate. Pleuromutilin, a natural product from the basidiomycete bacterial species, is a promising antibiotic candidate. In this study, a series of novel pleuromutilin derivatives possessing piperazinyl urea linkage were efficiently synthesised, and their antibacterial activities and bactericidal properties were evaluated via MIC, MBC and Time-kill kinetics assays. The results showed that all compounds exhibited potent activities against tested strains, especially MRSA strains with MIC values as low as 0.125 μg/mL; 8 times lower than that of marketed antibiotic Tiamulin. Docking studies indicate substituted piperazinyl urea derivatives could provide hydrogen bonds and initiate π-π stacking between molecules and surrounding residues.
Collapse
Affiliation(s)
- Yuanyuan Zhang
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
- Yibin Key Laboratory of Research and Application of Small Organic Chiral Molecules, Yibin Research Institute of Xihua University, Yibin, China
| | - Chuan Xie
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Yang Liu
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Feng Shang
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Rushiya Shao
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Jing Yu
- Kampo Medicine Pharmacology Research Laboratory, Graduate School of Pharmaceutical Sciences, Yokohama University of Pharmacy, Yokohama-shi, Japan
| | - Chunxia Wu
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Xinghui Yao
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Dongfang Liu
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
| | - Zhouyu Wang
- Department of Chemistry, School of Science, Xihua University, Chengdu, China
- Yibin Key Laboratory of Research and Application of Small Organic Chiral Molecules, Yibin Research Institute of Xihua University, Yibin, China
| |
Collapse
|
7
|
de Mattos-Shipley KMJ, Foster GD, Bailey AM. Cprp-An Unusual, Repetitive Protein Which Impacts Pleuromutilin Biosynthesis in the Basidiomycete Clitopilus passeckerianus. FRONTIERS IN FUNGAL BIOLOGY 2021; 2:655323. [PMID: 37744150 PMCID: PMC10512284 DOI: 10.3389/ffunb.2021.655323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/04/2021] [Indexed: 09/26/2023]
Abstract
Interrogation of an EST database for Clitopilus passeckerianus identified a putative homolog to the unusual stress response gene from yeast; ddr48, as being upregulated under pleuromutilin production conditions. Silencing of this gene, named cprp, produced a population of transformants which demonstrated significantly reduced pleuromutilin production. Attempts to complement a Saccharomyces cerevisiae ddr48 mutant strain (strain Y16748) with cprp were hampered by the lack of a clearly identifiable mutant phenotype, but interestingly, overexpression of either ddr48 or cprp in S. cerevisiae Y16748 led to a conspicuous and comparable reduction in growth rate. This observation, combined with the known role of DDR48 proteins from a range of fungal species in nutrient starvation and stress responses, raises the possibility that this family of proteins plays a role in triggering oligotrophic growth. Localization studies via the production of a Cprp:GFP fusion protein in C. passeckerianus showed clear localization adjacent to the hyphal septa and, to a lesser extent, cell walls, which is consistent with the identification of DDR48 as a cell wall-associated protein in various yeast species. To our knowledge this is the first study demonstrating that a DDR48-like protein plays a role in the regulation of a secondary metabolite, and represents the first DDR48-like protein from a basidiomycete. Potential homologs can be identified across much of the Dikarya, suggesting that this unusual protein may play a central role in regulating both primary and secondary metabolism in fungi.
Collapse
Affiliation(s)
| | | | - Andy M. Bailey
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
| |
Collapse
|
8
|
Li YG, Wang JX, Zhang GN, Zhu M, You XF, Wang YC, Zhang F. Design, synthesis, and biological activity evaluation of a series of pleuromutilin derivatives with novel C14 side chains. Bioorg Med Chem Lett 2020; 30:126969. [PMID: 32014384 DOI: 10.1016/j.bmcl.2020.126969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 01/04/2020] [Accepted: 01/13/2020] [Indexed: 01/08/2023]
Abstract
In this work, according to the 'me-too me-better' design strategy, a peculiar side chain different from lefamulin at C14 position of pleuromutilin was introduced. A series of novel thioether pleuromutilin derivatives containing cyclohexane in the C14 chain was synthesized by ten-step synthesis reaction. All derivatives were characterized by Nuclear Magnetic Resonance (NMR) and High Resolution Mass Spectrometer (HRMS). Furthermore, majority of derivatives displayed moderate antibacterial activity in vitro. However, the compound 2C and 2J exhibited comparable or superior antibacterial activity to lefamulin. The summarized structure-activity relationship not only made the variety of pleuromutilin derivatives more diverse, but also provided new ideas for its design and development.
Collapse
Affiliation(s)
- Yun-Ge Li
- School of Pharmacy, Jinzhou Medical University, Jinzhou 121001, PR China
| | - Ju-Xian Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, PR China
| | - Guo-Ning Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, PR China
| | - Mei Zhu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, PR China
| | - Xue-Fu You
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, PR China
| | - Yu-Cheng Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, PR China.
| | - Fan Zhang
- School of Pharmacy, Jinzhou Medical University, Jinzhou 121001, PR China
| |
Collapse
|
9
|
Goethe O, Heuer A, Ma X, Wang Z, Herzon SB. Antibacterial properties and clinical potential of pleuromutilins. Nat Prod Rep 2019; 36:220-247. [PMID: 29979463 DOI: 10.1039/c8np00042e] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Covering: up to 2018Pleuromutilins are a clinically validated class of antibiotics derived from the fungal diterpene (+)-pleuromutilin (1). Pleuromutilins inhibit bacterial protein synthesis by binding to the peptidyl transferase center (PTC) of the ribosome. In this review we summarize the biosynthesis and recent total syntheses of (+)-pleuromutilin (1). We review the mode of interaction of pleuromutilins with the bacterial ribosome, which involves binding of the C14 extension and the tricyclic core to the P and A sites of the PTC, respectively. We provide an overview of existing clinical agents, and discuss the three primary modes of bacterial resistance (mutations in ribosomal protein L3, Cfr methylation, and efflux). Finally we collect structure-activity relationships from publicly available reports, and close with some forward looking statements regarding future development.
Collapse
Affiliation(s)
- Olivia Goethe
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Abigail Heuer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Xiaoshen Ma
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Zhixun Wang
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Seth B Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA. and Department of Pharmacology, Yale School of Medicine, New Haven, Connecticut 06520, USA
| |
Collapse
|
10
|
Shang R, Zhang C, Yi Y, Liu Y, Pu W. Determination of a New Pleuromutilin Derivative in Broiler Chicken Plasma by RP-HPLC-UV and Its Application to a Pharmacokinetic Study. J Chromatogr Sci 2018; 56:604-610. [PMID: 29668863 DOI: 10.1093/chromsci/bmy033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 03/28/2018] [Indexed: 11/14/2022]
Abstract
A simple, sensitive and reproducible high-performance liquid chromatography method was developed and validated for the determination of 14-O-[(2-amino-1,3,4-thiadiazol-5-yl) thioacetyl] mutilin (ATTM), a new synthesized pleuromutilin derivative with potent antibacterial activity, in broiler chicken plasma after a single intravenous (i.v.), intramuscular (i.m.) or oral (p.o.) administration. Satisfactory separation was achieved on a ZORBAX Ecliplus C18 column (250 × 4.6, 5 μm) with UV detection at 279 nm, using a mobile phase comprising acetonitrile and ultrapure water (50:50, v/v). The elution was isocratic at ambient temperature with a flow rate of 1.0 mL/min. The method exhibited good linearity (R2 > 0.999) over the assayed concentration range (0.12-120.00 μg/mL) and demonstrated good intra- and inter-day precision and accuracy. The method was validated and successfully applied to the pharmacokinetic study of ATTM in chicken plasma after i.v. and p.o. administration.
Collapse
Affiliation(s)
- Ruofeng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, Gansu Province, China
| | - Chao Zhang
- Lianyungang Animal Health Inspection Institute, Lianyungang, Jiangsu Province, China
| | - Yunpeng Yi
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, Gansu Province, China
| | - Yu Liu
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, Gansu Province, China
| | - Wanxia Pu
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, Gansu Province, China
| |
Collapse
|
11
|
Shang R, Yi Y, Zhang C, Fu Y, Liang J, Pu W. Antibacterial activity and pharmacokinetic profile of a promising antibacterial agent: 14-O-[(4-Amino-6-hydroxy-pyrimidine-2-yl)thioacetyl] mutilin. Pharmacol Res 2017; 129:424-431. [PMID: 29133214 DOI: 10.1016/j.phrs.2017.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 11/09/2017] [Accepted: 11/09/2017] [Indexed: 01/21/2023]
Abstract
A new pleuromutilin derivative, 14-O-[(4-Amino-6-hydroxy-pyrimidine-2-yl)thioacetyl] mutilin (APTM), has been synthesized and proved most potent antibacterial agent in in vitro assays, suggesting that further development of this compound may lead to a promising antibacterial drug. In this study, we further evaluated the cytotoxicity, antibacterial efficacy and the pharmacokinetic profile of APTM. In BRL 3A cells, 50% of viability was obtained when 363μg/mL of APTM was used, while retapamulin and tiamulin fumarate needed 49 and 28μg/mL, respectively, to reach this viability. Compared to tiamulin fumarate, APTM showed higher inhibition efficacy and faster bactericidal activity against S. aureus and lower 50% effective dose (ED50) in mice after a lethal challenge with methicillin-resistant Staphylococcus aureus (MRSA). Docking experiment for APTM showed a similar binding pattern with tiamulin. Furthermore, a simple, accurate and sensitive HPLC method for the determination of APTM in rabbit plasma was developed and successfully applied to pharmacokinetic study, in which the half life (t1/2), clearance rate (Cl) and the area under the plasma concentration-time curve (AUC0→∞) were 3.37h, 0.35L/h/kg and 70.68μg·h/m, respectively.
Collapse
Affiliation(s)
- Ruofeng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province; Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, P. R. China; Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, 730050 Lanzhou, China.
| | - Yunpeng Yi
- Key Laboratory of New Animal Drug Project of Gansu Province; Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, P. R. China; Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, 730050 Lanzhou, China
| | - Chao Zhang
- Lianyungang Animal Health Inspection Institute, Lianyungang, 222000, Lianyungang, China
| | - Yunxing Fu
- Key Laboratory of New Animal Drug Project of Gansu Province; Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, P. R. China; Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, 730050 Lanzhou, China
| | - Jianping Liang
- Key Laboratory of New Animal Drug Project of Gansu Province; Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, P. R. China; Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, 730050 Lanzhou, China
| | - Wanxia Pu
- Key Laboratory of New Animal Drug Project of Gansu Province; Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, P. R. China; Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, 730050 Lanzhou, China.
| |
Collapse
|
12
|
Siricilla S, Mitachi K, Yang J, Eslamimehr S, Lemieux MR, Meibohm B, Ji Y, Kurosu M. A New Combination of a Pleuromutilin Derivative and Doxycycline for Treatment of Multidrug-Resistant Acinetobacter baumannii. J Med Chem 2017; 60:2869-2878. [PMID: 28291943 PMCID: PMC5469366 DOI: 10.1021/acs.jmedchem.6b01805] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Multidrug-resistant (MDR) Acinetobacter baumannii is one of the most difficult Gram-negative bacteria to treat and eradicate. In a cell-based screening of pleuromutilin derivatives against a drug sensitive A. baumannii strain, new molecules (2-4) exhibit bacteriostatic activity with 3.13 μg/mL concentration and 1 shows bactericidal activity with an MBC of 6.25 μg/mL. The pleuromutilin derivative 1 displays strong synergistic effects with doxycycline in a wide range of concentrations. A 35/1 ratio of 1 and doxycycline (1-Dox 35/1) kills drug susceptible A. baumannii with the MBC of 2.0 μg/mL and an MDR A. baumannii with the MBC of 3.13 μg/mL. In vitro anti-Acinetobacter activity of 1-Dox 35/1 is superior to that of clinical drugs such as tobramycin, tigecycline, and colistin. The efficacy of 1-Dox 35/1 is evaluated in a mouse septicemia model; treatment of the infected C57BL/6 mice with 1-Dox 35/1 protects from lethal infection of A. baumannii with an ED50 value of <2.0 mg/kg.
Collapse
Affiliation(s)
- Shajila Siricilla
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Katsuhiko Mitachi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Junshu Yang
- Department of Veterinary and Biomedical Sciences, University of Minnesota, 205 VSB, 1971 Commonwealth Avenue, St. Paul, MN 55108, United States
| | - Shakiba Eslamimehr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Maddie R. Lemieux
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Yinduo Ji
- Department of Veterinary and Biomedical Sciences, University of Minnesota, 205 VSB, 1971 Commonwealth Avenue, St. Paul, MN 55108, United States
| | - Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| |
Collapse
|
13
|
Mu S, Liu H, Zhang L, Wang X, Xue F, Zhang Y. Synthesis and Biological Evaluation of Novel Thioether Pleuromutilin Derivatives. Biol Pharm Bull 2017; 40:1165-1173. [PMID: 28768998 DOI: 10.1248/bpb.b16-00160] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To develop new pleuromutilin derivatives as veterinary antibiotic medicines, we designed and synthesized a series of new thioether pleuromutilin derivatives possessing acylthiazolyl moiety based on previously designed derivatives. The antibacterial properties of the prepared pleuromutilin derivatives were assessed in vitro by the broth dilution method against five kinds of bacteria and the mycoplasma Mycoplasma gallisepticum (MG). All of the tested compounds displayed moderate to good antibacterial activity to methicillin-sensitive Staphylococcus aureus (MSSA), methicillin-sensitive Staphylococcus epidermidis (MSSE), methicillin-resistant S. aureus (MRSA), Streptococcus agalactiae (S. aga) and MG. However, the activity to Pyogeniccoccus (Pyogens) was generally poor. Compounds 13i and l showed potent antibacterial activity against MSSE and MRSA which are better than that of valnemulin. The structural modification for pleuromutilin affected the antibacterial activity. Amino substituents in the benzene ring can effectively improve activity. Compared with the analogue 13a that possesses unsubstitution benzoyl group, the nitro, methoxy, hydroxy and dichloro substituent contributed little to antibacterial activity. Increasing a methylene between benzene moiety and carbonyl group decreased the bioactivity of derivative. The analogues that obtained by the reaction of amino acids and intermediate 9 showed moderate activity.
Collapse
Affiliation(s)
- Shuhua Mu
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences
| | - Huixian Liu
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences
| | - Lifang Zhang
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences
| | - Xiaoyang Wang
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences
| | - Feiqun Xue
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences
| | - Yue Zhang
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology
| |
Collapse
|
14
|
Wang X, Xie X, Cai Y, Yang X, Li J, Li Y, Chen W, He M. Design, Synthesis and Antibacterial Evaluation of Some New 2-Phenyl-quinoline-4-carboxylic Acid Derivatives. Molecules 2016; 21:340. [PMID: 26978336 PMCID: PMC6273947 DOI: 10.3390/molecules21030340] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 02/19/2016] [Accepted: 03/07/2016] [Indexed: 12/02/2022] Open
Abstract
A series of new 2-phenyl-quinoline-4-carboxylic acid derivatives was synthesized starting from aniline, 2-nitrobenzaldehyde, pyruvic acid followed by Doebner reaction, amidation, reduction, acylation and amination. All of the newly-synthesized compounds were characterized by 1H-NMR, 13C-NMR and HRMS. The antibacterial activities of these compounds against Gram-negative (Escherichia coli, Pseudomonas aeruginosa) and Gram-positive bacteria (Staphylococcus aureus, Bacillus subtilis), as well as one strain of methicillin-resistant Staphylococcus aureus (MRSA) bacteria were evaluated by the agar diffusion method (zone of inhibition) and a broth dilution method (minimum inhibitory concentration (MIC)), and their structure-activity relationships were obtained and discussed. The results revealed that some compounds displayed good antibacterial activity against Staphylococcus aureus, and Compounds 5a4 and 5a7 showed the best inhibition with an MIC value of 64 μg/mL against Staphylococcus aureus and with an MIC value of 128 μg/mL against Escherichia coli, respectively. The results of the MTT assay illustrated the low cytotoxicity of Compound 5a4.
Collapse
Affiliation(s)
- Xiaoqin Wang
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Xiaoyang Xie
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Yuanhong Cai
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Xiaolan Yang
- Department of Hematology, Donghua Affiliated Hospital of Sun Yat-sen University, Dongguan 523110, China.
| | - Jiayu Li
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Yinghan Li
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Wenna Chen
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Minghua He
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| |
Collapse
|
15
|
Li YR, Li C, Liu JC, Guo M, Zhang TY, Sun LP, Zheng CJ, Piao HR. Synthesis and biological evaluation of 1,3-diaryl pyrazole derivatives as potential antibacterial and anti-inflammatory agents. Bioorg Med Chem Lett 2015; 25:5052-7. [DOI: 10.1016/j.bmcl.2015.10.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 10/08/2015] [Accepted: 10/10/2015] [Indexed: 10/22/2022]
|
16
|
Chen X, Hu YH, Chen WD, Li WD, Huang ZC, Li Y, Luo YW, Huang YX, Chen YT, Wang K, Li L. Comparison of inducible versus constitutive expression of plectasin on yields and antimicrobial activities in Pichia pastoris. Protein Expr Purif 2015; 118:70-6. [PMID: 26500192 DOI: 10.1016/j.pep.2015.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 10/08/2015] [Accepted: 10/14/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Plectasin might serve as a substitute for traditional antibiotics, but its yields and antimicrobial activities warrant further investigation. OBJECTIVE To identify the influence of inducible versus constitutive expression of plectasin on yields and antimicrobial activities. METHODS Through SOE-PCR, a recombinant plectasin gene was generated and inserted into inducible (pPICZαA) and constitutive (pGAPZαA) vectors in order to create Pichia pastoris GS115 strains. After 120 h of fermentation, supernatants were purified by an AKTA purifier using nickel columns. Minimal inhibitory concentration (MIC) and inhibition zone assays were performed after Tricine-SDS-PAGE. RESULTS After 120 h of fermentation, the yield of constitutive plectasin (370 μg/ml) was much lower than that from inducible vector (880 μg/ml) (P < 0.05). However, constitutive strain reached its plateau phase faster and keep more consistent yield (P < 0.05). The MICs of inducible plectasin against Methicillin-resistant Staphylococcus aureus (MRSA) 15471118, vancomycin-resistant Enterococcus feces (VREF), and penicillin-resistant Streptococcus pneumonia (PRSP) 31355 were 64, 32, and 64 μg/ml, respectively, while those of constitutive plectasin were 4, 4, and 16 μg/ml. No significant differences were observed in antimicrobial activities between inducible and constitutive plectasin for MRSA 15471118, VREF and PRSP 31355 (all P > 0.05). However, constitutive plectasin had a larger inhibition zone than inducible plectasin with the same mass. CONCLUSIONS Although P. pastoris GS115 (pGAPZαA-Plectasin-GS115) had lower expression than P. pastoris GS115 (pPICZαA-plectasin-GS115), it reached the plateau phase faster, had steadier yields and showed superiority in antimicrobial activities. Therefore, pGAPZαA might be more suitable for expression of plectasin in GS115 compared with pPICZαA.
Collapse
Affiliation(s)
- Xin Chen
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yong-hao Hu
- Biosafety Level-3 Laboratory, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Wei-di Chen
- Biosafety Level-3 Laboratory, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Wen-di Li
- Biosafety Level-3 Laboratory, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Zi-chao Huang
- Biosafety Level-3 Laboratory, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Yun Li
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yu-wen Luo
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yu-xia Huang
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yi-tai Chen
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Kai Wang
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Ling Li
- Biosafety Level-3 Laboratory, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China.
| |
Collapse
|
17
|
Yi Y, Yang G, Zhang C, Chen J, Liang J, Shang R. Synthesis and evaluation of novel pleuromutilin derivatives with a substituted pyrimidine moiety. Eur J Med Chem 2015; 101:179-84. [PMID: 26134552 DOI: 10.1016/j.ejmech.2015.06.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 11/17/2022]
Abstract
A series of novel pleuromutilin derivatives possessing 6-hydroxy pyrimidine moieties were synthesized via acylation reactions under mild conditions. The in vitro antibacterial activities of the synthesized derivatives against methicillin-resistant Staphylococcus aureus (MRSA), methicillin-resistant Staphylococcus epidermidis (MRSE), Bacillus subtilis (B. subtilis), and Escherichia coli (E. coli) were tested by the agar dilution method. The majority of the screened compounds displayed potent activities. Compounds 3 and 6a were found to be the most active antibacterial agents against MRSA and MRSE. Moreover, in the vivo experiment, compound 6a showed comparable antibacterial activity to that of tiamulin, with ED50 of 5.47 mg/kg body weight against MRSA.
Collapse
Affiliation(s)
- Yunpeng Yi
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China.
| | - Guanzhou Yang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730020, China
| | - Chao Zhang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China
| | - Jiongran Chen
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China
| | - Jianping Liang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China
| | - Ruofeng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China.
| |
Collapse
|
18
|
Li Y, Zhang-Negrerie D, Du Y, Zhao K. A convenient synthesis of indoloquinolinones via 3-arylation of indole-2-carboxamides and PIDA-mediated C–N bond formation. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
19
|
Xu B, Zhao J, Jing Z, Zhang Y, Shi Y, Fan T. Role of hemoglobin from blood clam Scapharca kagoshimensis beyond oxygen transport. FISH & SHELLFISH IMMUNOLOGY 2015; 44:248-256. [PMID: 25700784 DOI: 10.1016/j.fsi.2015.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/06/2015] [Accepted: 02/09/2015] [Indexed: 06/04/2023]
Abstract
The evolutionary race between hosts and pathogens has led to a variety of adaptations. Little is known about the immunological role of hemoglobin (Hb) in antimicrobial immune responses. Results showed that a 31.2 kDa monodimer Hb (skHbI) and a 57.8 kDa heterotetramer Hb (skHbII) from the blood clam, Scapharca kagoshimensis, had phenoloxidase (PO)-like activities and antimicrobial activities. Both were found capable of oxidizing l-DOPA, catechol and hydroquinone. Their PO-like activities were visibly greatly inhibited by oxidase inhibitors, EDTA, and divalent metal ions, and greatly enhanced by isopropanol and Fe(2+), indicating that they have the properties of a metalloenzyme and a catecholase-type PO as well. They also showed obvious anti-bacterial activities against gram-positive bacteria but not against either gram-negative bacteria nor fungi. The anti-bacterial activities levels were a result of the generation of reactive oxygen species (ROS) of superoxide anions. These results indicate that skHbI and skHbII, not only function as iron-containing oxygen carriers, but also exert anti-bacterial activities and catecholase-type oxidizing activities. The fact that skHbII exerts high level of PO-like activity indicates different roles in the innate immunodefense system. These results may improve understanding of the multiple functions of invertebrate Hbs beyond serving as oxygen carriers and may provide insight into how the fundamental and universal mode of the innate immune system has persisted in respiratory proteins throughout the course of evolution.
Collapse
Affiliation(s)
- Bin Xu
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Jun Zhao
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Zhao Jing
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; Department of Histology and Embryology, Medical College, Qingdao University, Qingdao 266021, China
| | - Yanan Zhang
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; Department of Biology, Medical College, Qingdao University, Qingdao 266021, China
| | - Ying Shi
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Tingjun Fan
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| |
Collapse
|
20
|
Liu H, Xiao S, Zhang D, Mu S, Zhang L, Wang X, Xue F. Synthesis and Antibacterial Activity of Novel Pleuromutilin Derivatives. Biol Pharm Bull 2015; 38:1041-8. [PMID: 26133714 DOI: 10.1248/bpb.b15-00123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study we describe the design, synthesis, and antibacterial activity of novel pleuromutilin analogs. A series of new compounds containing piperazine and alkylamino or arylamino groups was synthesized. The new compounds were characterized via (1)H-NMR, (13)C-NMR, Fourier transform (FT)-IR and MS, and were further evaluated for their in vitro activity against seven Gram-positive, and one Gram-negative, pathogens. Antibacterial data revealed that all compounds exhibited moderate to good antibacterial activities against sensitive Gram-positive pathogens. Specifically, 9d displayed the best activity: its activity to Staphylococcus aureus (ATCC25923) is 0.125 µg/mL, which is equal to the control compound tiamulin. The antibacterial activities of 9d to Streptococcus suis (minimum inhibitory concentration (MIC) of 2 µg/mL), Streptococcus agalactiae (MIC of 0.5 µg/mL), and Streptococcus dysgalactiae (MIC of 0.5 µg/mL) were also excellent compared with the control drug erythromycin (MIC of >128 µg/mL). The binding modes of these compounds with active sites were calculated using the programs of Molecular Operating Environment (MOE) and Pymol.
Collapse
Affiliation(s)
- Huixian Liu
- Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences
| | | | | | | | | | | | | |
Collapse
|
21
|
Shang RF, Wang GH, Xu XM, Liu SJ, Zhang C, Yi YP, Liang JP, Liu Y. Synthesis and biological evaluation of new pleuromutilin derivatives as antibacterial agents. Molecules 2014; 19:19050-65. [PMID: 25415471 PMCID: PMC6271455 DOI: 10.3390/molecules191119050] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 11/11/2014] [Accepted: 11/12/2014] [Indexed: 11/30/2022] Open
Abstract
Several pleuromutilin derivatives possessing thiadiazole moieties were synthesized via acylation reactions under mild conditions. The in vitro antibacterial activities of the derivatives against methicillin-resistant S. aureus, methicillin-resistant S. epidermidis, S. aureus, S. epidermidis, E. coli, and B. cereus were tested by the agar dilution method and Oxford cup assay. All the screened compounds displayed potent activity. Compound 6d was the most active antibacterial agent because of its lowest MIC value and largest inhibition zone. Docking experiments were performed to understand the possible mode of the interactions between the derivatives and 50S ribosomal subunit. Moreover, the absorption, distribution, metabolism, excretion and toxicity properties of the synthesized compounds were analyzed after prediction using the Advanced Chemistry Development/Percepta Platform available online.
Collapse
Affiliation(s)
- Ruo-Feng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Ministry of Agriculture, Lanzhou 730050, China.
| | - Guan-Hua Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China.
| | - Xi-Ming Xu
- Department of Toxicology, School of Public Health, Guiyang Medical University, Guiyang 550004, China.
| | - Si-Jie Liu
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China.
| | - Chao Zhang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Ministry of Agriculture, Lanzhou 730050, China.
| | - Yun-Peng Yi
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Ministry of Agriculture, Lanzhou 730050, China.
| | - Jian-Ping Liang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Ministry of Agriculture, Lanzhou 730050, China.
| | - Yu Liu
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Ministry of Agriculture, Lanzhou 730050, China.
| |
Collapse
|
22
|
|
23
|
Shang R, Pu X, Xu X, Xin Z, Zhang C, Guo W, Liu Y, Liang J. Synthesis and biological activities of novel pleuromutilin derivatives with a substituted thiadiazole moiety as potent drug-resistant bacteria inhibitors. J Med Chem 2014; 57:5664-78. [PMID: 24892980 DOI: 10.1021/jm500374c] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of novel pleuromutilin derivatives possessing thiadiazole moieties were synthesized via acylation reactions under mild conditions. The in vitro antibacterial activities of the derivatives against methicillin-resistant Staphylococcus aureus, methicillin-resistant Staphylococcus epidermidis, Escherichia coli, and Streptococcus agalactiae were tested by the agar dilution method and Oxford cup assay. The majority of the tested compounds displayed moderate antibacterial activities. Importantly, the three compounds with amino or tertiary amine groups in their side chains, 11, 13b, and 15c, were the most active antibacterial agents. Docking experiments carried out on the peptidyl transferase center (PTC) of 23S rRNA proved that there is a reasonable direct correlation between the binding free energy (ΔGb, kcal/mol) and the antibacterial activity. Moreover, the pharmacokinetic profiles of 11 and 15c in rat were characterized by moderate clearance and oral bioavailability.
Collapse
Affiliation(s)
- Ruofeng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province; Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS , 335 Jiangouyan, Lanzhou 730050, China
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Dreier I, Hansen LH, Nielsen P, Vester B. A click chemistry approach to pleuromutilin derivatives. Part 3: extended footprinting analysis and excellent MRSA inhibition for a derivative with an adenine phenyl side chain. Bioorg Med Chem Lett 2014; 24:1043-6. [PMID: 24486133 DOI: 10.1016/j.bmcl.2014.01.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/07/2014] [Accepted: 01/08/2014] [Indexed: 10/25/2022]
Abstract
Five promising pleuromutilin derivatives from our former studies, all containing adenine on various linkers, were supplemented with two new compounds. The binding to Escherichia coli ribosomes was verified by extensive chemical footprinting analysis. The ability to inhibit bacterial growth was investigated on two Staphylococcus aureus strains and compared to the pleuromutilin drugs tiamulin and valnemulin. Three of the compounds show an effect similar to tiamulin and one compound shows an excellent effect similar to valnemulin.
Collapse
Affiliation(s)
- Ida Dreier
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark
| | - Lykke H Hansen
- Nucleic Acid Center, Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense M, Denmark
| | - Poul Nielsen
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark.
| | - Birte Vester
- Nucleic Acid Center, Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense M, Denmark.
| |
Collapse
|
25
|
Shang R, Wang S, Xu X, Yi Y, Guo W, YuLiu, Liang J. Chemical synthesis and biological activities of novel pleuromutilin derivatives with substituted amino moiety. PLoS One 2013; 8:e82595. [PMID: 24376551 PMCID: PMC3871055 DOI: 10.1371/journal.pone.0082595] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 10/25/2013] [Indexed: 11/18/2022] Open
Abstract
Novel pleuromutilin derivatives designed based on the structure of valnemulin were synthesized and evaluated for their in vitro antibacterial activities. These pleuromutilin derivatives with substituted amino moiety exhibited excellent activities against methicillin-resistant Staphylococcus aureus, methicillin-resistant Staphylococcus epidermidis, Escherichia coli, and Streptococcus agalactiae. Compound 5b showed the highest antibacterial activities and even exceeded tiamulin. Moreover, the docking experiments provided information about the binding model between the synthesized compounds and peptidyl transferase center (PTC) of 23S rRNA.
Collapse
Affiliation(s)
- Ruofeng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmacceutical Development, Ministry of Agriculture, Lanzhou Institute of Animal Science and Veterinary Pharmaceutics Science, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Shengyu Wang
- University Hospital of Gansu Traditional Chinese Medicine, Lanzhou, Gansu, China
| | - Ximing Xu
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS, Paris, France
| | - Yunpeng Yi
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmacceutical Development, Ministry of Agriculture, Lanzhou Institute of Animal Science and Veterinary Pharmaceutics Science, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Wenzhu Guo
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmacceutical Development, Ministry of Agriculture, Lanzhou Institute of Animal Science and Veterinary Pharmaceutics Science, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - YuLiu
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmacceutical Development, Ministry of Agriculture, Lanzhou Institute of Animal Science and Veterinary Pharmaceutics Science, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Jianping Liang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmacceutical Development, Ministry of Agriculture, Lanzhou Institute of Animal Science and Veterinary Pharmaceutics Science, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| |
Collapse
|