1
|
Luo Z, Li P, Zhang D, Zhu J, Wang W, Zhao W, Li P, Yuan G. A Novel Antimicrobial Mechanism of Azalomycin F Acting on Lipoteichoic Acid Synthase and Cell Envelope. Molecules 2024; 29:856. [PMID: 38398608 PMCID: PMC10893547 DOI: 10.3390/molecules29040856] [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: 12/16/2023] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
Lipoteichoic acid (LTA) plays an essential role in bacterial growth and resistance to antibiotics, and LTA synthetase (LtaS) was considered as an attractive target for combating Gram-positive infections. Azalomycin F, a natural guanidyl-containing polyhydroxy macrolide, can target the LTA of Staphylococcus aureus. Using various technologies including enzyme-linked immunosorbent assay, transmission electron microscope, proteomics, and parallel reaction monitoring, here, the experimental results indicated that azalomycin F can accelerate the LTA release and disrupt the cell envelope, which would also lead to the feedback upregulation on the expressions of LtaS and other related enzymes. Simultaneously, the reconstituted enzyme activity evaluations showed that azalomycin F can significantly inhibit the extracellular catalytic domain of LtaS (eLtaS), while this was vague for LtaS embedded in the liposomes. Subsequently, the fluorescence analyses for five incubation systems containing azalomycin F and eLtaS or the LtaS-embedded liposome indicated that azalomcyin F can spontaneously bind to the active center of LtaS. Combining the mass spectroscopy analyses and the molecular dockings, the results further indicated that this interaction involves the binding sites of substrates and the LTA prolongation, especially the residues Lys299, Phe353, Trp354 and His416. All these suggested that azalomycin F has multiple antibacterial mechanisms against S. aureus. It can not only inhibit LTA biosynthesis through the interactions of its guanidyl side chain with the active center of LtaS but also disrupt the cell envelope through the synergistic effect of accelerating the LTA release, damaging the cell membrane, and electrostatically interacting with LTA. Simultaneously, these antibacterial mechanisms exhibit a synergistic inhibition effect on S. aureus cells, which would eventually cause the cellular autolysis.
Collapse
Affiliation(s)
- Zilong Luo
- Biotechnological Engineering Center for Pharmaceutical Research and Development, Jiangxi Agricultural University, Nanchang 330045, China
| | - Pingyi Li
- Biotechnological Engineering Center for Pharmaceutical Research and Development, Jiangxi Agricultural University, Nanchang 330045, China
| | - Duoduo Zhang
- Biotechnological Engineering Center for Pharmaceutical Research and Development, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jianping Zhu
- Laboratory of Natural Medicine and Microbiological Drug, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Wan Wang
- School of Basic Medicine, Nanchang Medical College, Nanchang 330006, China
| | - Wenjia Zhao
- Biotechnological Engineering Center for Pharmaceutical Research and Development, Jiangxi Agricultural University, Nanchang 330045, China
| | - Peibo Li
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Ganjun Yuan
- Biotechnological Engineering Center for Pharmaceutical Research and Development, Jiangxi Agricultural University, Nanchang 330045, China
- Laboratory of Natural Medicine and Microbiological Drug, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| |
Collapse
|
2
|
Pourhosseini PS, Ghasemitabesh R, Pirhaghi M, Fayazzadeh S, Saboury AA, Najafi F. Urethane-containing cationic gemini surfactants with amphiphilic tails: novel near-neutral protein carriers with minor effects on insulin structure. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Synthesis and characterization of Pd(II) antitumor complex, DFT calculation and DNA/BSA binding insight through the combined experimental and theoretical aspects. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130535] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
4
|
Tan X, Luo S, Long L, Wang Y, Wang D, Fang S, Ouyang Q, Su Y, Cheng T, Shi C. Structure-Guided Design and Synthesis of a Mitochondria-Targeting Near-Infrared Fluorophore with Multimodal Therapeutic Activities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1704196. [PMID: 28980731 DOI: 10.1002/adma.201704196] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 08/18/2017] [Indexed: 05/25/2023]
Abstract
An urgent challenge for imaging-guided disease-targeted multimodal therapy is to develop the appropriate multifunctional agents to meet the requirements for potential applications. Here, a rigid cyclohexenyl substitution in the middle of a polymethine linker and two asymmetrical amphipathic N-alkyl side chains to indocyanine green (ICG) (the only FDA-approved NIR contrast agent) are introduced, and a new analog, IR-DBI, is developed with simultaneous cancer-cell mitochondrial targeting, NIR imaging, and chemo-/PDT/PTT/multimodal therapeutic activities. The asymmetrical and amphipathic structural modification renders IR-DBI a close binding to albumin protein site II to form a drug-protein complex and primarily facilitates its preferential accumulation at tumor sites via the enhanced permeability and retention (EPR) effect. The released IR-DBI dye is further actively taken up by cancer cells through organic-anion-transporting polypeptide transporters, and the lipophilic cationic property leads to its selective accumulation in the mitochondria of cancer cells. Finally, based on the high albumin-binding affinity, IR-DBI is modified into human serum albumin (HSA) via self-assembly to produce a nanosized complex, which exhibits significant improvement in the cancer targeting and multimodal cancer treatment with better biocompatibility. This finding may present a practicable strategy to develop small-molecule-based cancer theranostic agents for simultaneous cancer diagnostics and therapeutics.
Collapse
Affiliation(s)
- Xu Tan
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Shenglin Luo
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Lei Long
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Yu Wang
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Dechun Wang
- Department of Hepatobiliary, General Hospital of Tibet area Military Command, Lhasa, 850000, China
| | - Shengtao Fang
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
| | - Yongping Su
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Tianmin Cheng
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| | - Chunmeng Shi
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China
| |
Collapse
|
5
|
Interaction Between Ginkgolic Acid and Human Serum Albumin by Spectroscopy and Molecular Modeling Methods. J SOLUTION CHEM 2014. [DOI: 10.1007/s10953-014-0200-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
6
|
Wang JZ, Ren SY, Zhu GF, Xi L, Han YG, Luo Y, Du LF. Hg2+ interference with the structure of tobacco etch virus protease (TEVp) and its implications for biological engineering. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.08.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
7
|
Wu G, Jiang X, Zhou L, Yang L, Wang Y, Xia G, Chen Z, Duan M. The bilateral action between EQ14-2-14 gemini surfactant and bovine serum albumin by DPI and 1H NMR. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
8
|
Zhang X, Li L, Xu Z, Liang Z, Su J, Huang J, Li B. Investigation of the interaction of naringin palmitate with bovine serum albumin: spectroscopic analysis and molecular docking. PLoS One 2013; 8:e59106. [PMID: 23527100 PMCID: PMC3604151 DOI: 10.1371/journal.pone.0059106] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 02/11/2013] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Bovine serum albumin (BSA) contains high affinity binding sites for several endogenous and exogenous compounds and has been used to replace human serum albumin (HSA), as these two compounds share a similar structure. Naringin palmitate is a modified product of naringin that is produced by an acylation reaction with palmitic acid, which is considered to be an effective substance for enhancing naringin lipophilicity. In this study, the interaction of naringin palmitate with BSA was characterised by spectroscopic and molecular docking techniques. METHODOLOGY/PRINCIPAL FINDINGS The goal of this study was to investigate the interactions between naringin palmitate and BSA under physiological conditions, and differences in naringin and naringin palmitate affinities for BSA were further compared and analysed. The formation of naringin palmitate-BSA was revealed by fluorescence quenching, and the Stern-Volmer quenching constant (KSV ) was found to decrease with increasing temperature, suggesting that a static quenching mechanism was involved. The changes in enthalpy (ΔH) and entropy (ΔS) for the interaction were detected at -4.11 ± 0.18 kJ·mol(-1) and -76.59 ± 0.32 J·mol(-1)·K(-1), respectively, which indicated that the naringin palmitate-BSA interaction occurred mainly through van der Waals forces and hydrogen bond formation. The negative free energy change (ΔG) values of naringin palmitate at different temperatures suggested a spontaneous interaction. Circular dichroism studies revealed that the α-helical content of BSA decreased after interacting with naringin palmitate. Displacement studies suggested that naringin palmitate was partially bound to site I (subdomain IIA) of the BSA, which was also substantiated by the molecular docking studies. CONCLUSIONS/SIGNIFICANCE In conclusion, naringin palmitate was transported by BSA and was easily removed afterwards. As a consequence, an extension of naringin applications for use in food, cosmetic and medicinal preparations may be clinically and practically significant, especially in the design of new naringin palmitate-inspired drugs.
Collapse
Affiliation(s)
- Xia Zhang
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
| | - Lin Li
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- Guangdong Province Key Laboratory For Green Processing Of Natural Products and Product Safety, South China University of Technology, Guangzhou, China
| | - Zhenbo Xu
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- Department of Microbial Pathogenesis, Dental School, University of Maryland, Baltimore, Maryland, United States of America
| | - Zhili Liang
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
| | - Jianyu Su
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- Guangdong Province Key Laboratory For Green Processing Of Natural Products and Product Safety, South China University of Technology, Guangzhou, China
| | - Jianrong Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan, China
| | - Bing Li
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- Guangdong Province Key Laboratory For Green Processing Of Natural Products and Product Safety, South China University of Technology, Guangzhou, China
| |
Collapse
|
9
|
Sanei H, Asoodeh A, Hamedakbari-Tusi S, Chamani J. Multi-spectroscopic Investigations of Aspirin and Colchicine Interactions with Human Hemoglobin: Binary and Ternary Systems. J SOLUTION CHEM 2011. [DOI: 10.1007/s10953-011-9766-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|