1
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Li DH, Wilson S, Mastroianni G, Ruban AV. Altered lipid acyl chain length controls energy dissipation in light-harvesting complex II proteoliposomes by hydrophobic mismatch. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 246:112758. [PMID: 37531665 DOI: 10.1016/j.jphotobiol.2023.112758] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023]
Abstract
In plants, the major light-harvesting antenna complex (LHCII) is vital for both light harvesting and photoprotection in photosystem II. Previously, we proposed that the thylakoid membrane itself could switch LHCII into the photoprotective state, qE, via a process known as hydrophobic mismatch. The decrease in the membrane thickness that followed the formation of ΔpH was a key fact that prompted this idea. To test this, we made proteoliposomes from lipids with altered acyl chain length (ACL). Here, we show that ACL regulates the average chlorophyll fluorescence lifetime of LHCII. For liposomes made of lipids with an ACL of 18 carbons, the lifetime was ∼2 ns, like that for the thylakoid membrane. Furthermore, LHCII appears to be quenched in proteoliposomes with an ACL both shorter and longer than 18 carbons. The proteoliposomes made of short ACL lipids display structural heterogeneity revealing two quenched conformations of LHCII, each having characteristic 77 K fluorescence spectra. One conformation spectrally resembles isolated LHCII aggregates, whilst the other resembles LHCII immobilized in polyacrylamide gels. Overall, the decrease in the ACL appears to produce quenched conformations of LHCII, which renders plausible the idea that the trigger of qE is the hydrophobic mismatch.
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Affiliation(s)
- Dan-Hong Li
- Department of Biochemistry, School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, United Kingdom.
| | - Sam Wilson
- Department of Biochemistry, School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, United Kingdom.
| | - Giulia Mastroianni
- Department of Biochemistry, School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, United Kingdom.
| | - Alexander V Ruban
- Department of Biochemistry, School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, United Kingdom.
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2
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Tvilum A, Johansen MI, Glud LN, Ivarsen DM, Khamas AB, Carmali S, Mhatre SS, Søgaard AB, Faddy E, de Vor L, Rooijakkers SHM, Østergaard L, Jørgensen NP, Meyer RL, Zelikin AN. Antibody-Drug Conjugates to Treat Bacterial Biofilms via Targeting and Extracellular Drug Release. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2301340. [PMID: 37290045 PMCID: PMC10427384 DOI: 10.1002/advs.202301340] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/22/2023] [Indexed: 06/10/2023]
Abstract
The treatment of implant-associated bacterial infections and biofilms is an urgent medical need and a grand challenge because biofilms protect bacteria from the immune system and harbor antibiotic-tolerant persister cells. This need is addressed herein through an engineering of antibody-drug conjugates (ADCs) that contain an anti-neoplastic drug mitomycin C, which is also a potent antimicrobial against biofilms. The ADCs designed herein release the conjugated drug without cell entry, via a novel mechanism of drug release which likely involves an interaction of ADC with the thiols on the bacterial cell surface. ADCs targeted toward bacteria are superior by the afforded antimicrobial effects compared to the non-specific counterpart, in suspension and within biofilms, in vitro, and in an implant-associated murine osteomyelitis model in vivo. The results are important in developing ADC for a new area of application with a significant translational potential, and in addressing an urgent medical need of designing a treatment of bacterial biofilms.
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Affiliation(s)
- Anne Tvilum
- Department of Chemistry, Aarhus University, Aarhus C, 8000, Denmark
| | - Mikkel I Johansen
- Department of Clinical Medicine, Aarhus University, Aarhus N, 8200, Denmark
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus N, 8200, Denmark
| | - Laerke N Glud
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
| | - Diana M Ivarsen
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
| | - Amanda B Khamas
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
| | - Sheiliza Carmali
- Department of Chemistry, Aarhus University, Aarhus C, 8000, Denmark
| | - Snehit Satish Mhatre
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
| | - Ane B Søgaard
- Department of Chemistry, Aarhus University, Aarhus C, 8000, Denmark
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
| | - Emma Faddy
- Department of Clinical Medicine, Aarhus University, Aarhus N, 8200, Denmark
| | - Lisanne de Vor
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Suzan H M Rooijakkers
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Lars Østergaard
- Department of Clinical Medicine, Aarhus University, Aarhus N, 8200, Denmark
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus N, 8200, Denmark
| | - Nis P Jørgensen
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus N, 8200, Denmark
| | - Rikke L Meyer
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
- Department of Biology, Aarhus University, Aarhus C, 8000, Denmark
| | - Alexander N Zelikin
- Department of Chemistry, Aarhus University, Aarhus C, 8000, Denmark
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, 8000, Denmark
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3
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Xie J, Meng Z, Han X, Li S, Ma X, Chen X, Liang Y, Deng X, Xia K, Zhang Y, Zhu H, Fu T. Cholesterol Microdomain Enhances the Biofilm Eradication of Antibiotic Liposomes. Adv Healthc Mater 2022; 11:e2101745. [PMID: 35037424 DOI: 10.1002/adhm.202101745] [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: 08/21/2021] [Revised: 01/09/2022] [Indexed: 11/06/2022]
Abstract
Resistance and tolerance of biofilms to antibiotics is the greatest challenge in the treatment of bacterial infections. Therefore, developing an effective strategy against biofilms is a top priority. Liposomes are widely used as antibiotic drug carriers; however, common liposomes lack affinity for biofilms. Herein, biofilm-targeted antibiotic liposomes are created by simply adjusting their cholesterol content. The tailored liposomes exhibit significantly enhanced bacterial inhibition and biofilm eradication effects that are positively correlated with the cholesterol content of liposomes. The experiments further demonstrate that this enhanced effect can be ascribed to the effective drug release through the pores, which are formed by the combination of cholesterol microdomains in liposomal lipid bilayers with membrane-damaged toxins in biofilms. Consequently, liposome encapsulation with a high cholesterol concentration improves noticeably the pharmacodynamics and biocompatibility of antibiotics after pulmonary administration. This work may provide a new direction for the development of antibiofilm formulations that can be widely used for the treatment of infections caused by bacterial biofilms.
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Affiliation(s)
- Jianjun Xie
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Zhiping Meng
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Xingxing Han
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Sipan Li
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Xinai Ma
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Xuanyu Chen
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Yinmei Liang
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Xiaomin Deng
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Kexin Xia
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Yue Zhang
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Huaxu Zhu
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Tingming Fu
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
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4
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Muteeb G, Alsultan A, Farhan M, Aatif M. Risedronate and Methotrexate Are High-Affinity Inhibitors of New Delhi Metallo-β-Lactamase-1 (NDM-1): A Drug Repurposing Approach. Molecules 2022; 27:1283. [PMID: 35209073 PMCID: PMC8878330 DOI: 10.3390/molecules27041283] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/01/2022] [Accepted: 02/08/2022] [Indexed: 01/01/2023] Open
Abstract
Bacteria expressing New Delhi metallo-β-lactamase-1 (NDM-1) can hydrolyze β-lactam antibiotics (penicillins, cephalosporins, and carbapenems) and, thus, mediate multidrug resistance. The worldwide dissemination of NDM-1 poses a serious threat to public health, imposing a huge economic burden in the development of new antibiotics. Thus, there is an urgent need for the identification of novel NDM-1 inhibitors from a pool of already-known drug molecules. Here, we screened a library of FDA-approved drugs to identify novel non-β-lactam ring-containing inhibitors of NDM-1 by applying computational as well as in vitro experimental approaches. Different steps of high-throughput virtual screening, molecular docking, molecular dynamics simulation, and enzyme kinetics were performed to identify risedronate and methotrexate as the inhibitors with the most potential. The molecular mechanics/generalized Born surface area (MM/GBSA) and molecular dynamics (MD) simulations showed that both of the compounds (risedronate and methotrexate) formed a stable complex with NDM-1. Furthermore, analyses of the binding pose revealed that risedronate formed two hydrogen bonds and three electrostatic interactions with the catalytic residues of NDM-1. Similarly, methotrexate formed four hydrogen bonds and one electrostatic interaction with NDM-1's active site residues. The docking scores of risedronate and methotrexate for NDM-1 were -10.543 kcal mol-1 and -10.189 kcal mol-1, respectively. Steady-state enzyme kinetics in the presence of risedronate and methotrexate showed a decreased catalytic efficiency (i.e., kcat/Km) of NDM-1 on various antibiotics, owing to poor catalytic proficiency and affinity. The results were further validated by determining the MICs of imipenem and meropenem in the presence of risedronate and methotrexate. The IC50 values of the identified inhibitors were in the micromolar range. The findings of this study should be helpful in further characterizing the potential of risedronate and methotrexate to treat bacterial infections.
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Affiliation(s)
- Ghazala Muteeb
- Department of Nursing, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Abdulrahman Alsultan
- College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Mohd Farhan
- Department of Basic Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Mohammad Aatif
- Department of Public Health, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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5
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Gerayelou G, Khameneh B, Malaekeh-Nikouei B, Mahmoudi A, Fazly Bazzaz BS. Dual Antibiotic and Diffusible Signal Factor Combination Nanoliposomes for Combating Staphylococcus epidermidis Biofilm. Adv Pharm Bull 2021; 11:684-692. [PMID: 34888215 PMCID: PMC8642808 DOI: 10.34172/apb.2021.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/18/2020] [Accepted: 10/14/2020] [Indexed: 11/17/2022] Open
Abstract
Purpose: Microbial biofilms are one of the main causes of persistent human infections. Encapsulation of an antibiotic and a biofilm dispersal agent within a nano-carrier has been recognized as a novel approach to combat the problem of biofilm-related infections. Here, we develop the nanoliposomal formulation for delivery of vancomycin in combination with cis-2- decenoic acid (C2DA), to Staphylococcus epidermidis biofilm. The effects of the formulations were studied at two stages: biofilm growth inhabitation and biofilm eradication. Methods: Liposomal formulations were prepared by the solvent evaporation dehydration-rehydration method and were evaluated for size, zeta potential, and encapsulation efficacy. The ability of different agents in free and encapsulated forms were assessed to evaluate the anti-biofilm activities. Results: Vancomycin and C2DA were successfully co-encapsulated in the same nanoliposome (liposomal combination). The zeta potential values of the liposomal formulations of vancomycin, C2DA, and the liposomal combination were 37.2, 40.2, 51.5 mV, and the mean sizes of these liposomal formulations were 167.8±1.5, 215.5±8.8, 235.5±0.01, respectively. Encapsulation efficacy of C2DA was 65% and about 40% for vancomycin. The results indicated that liposomal combination exerted strong anti-biofilm activities, slightly exceeding those observed by the free form of a combination of vancomycin and C2DA, but higher than either agent used alone in their free forms. The anti-biofilm activity of formulations followed concentration and time-dependent manner. Conclusion: The combination of vancomycin and C2DA could inhibit biofilm formation. Employing the liposomal combination is a considerable method to remove bacterial biofilm.
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Affiliation(s)
- Golara Gerayelou
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bahman Khameneh
- Department of Pharmaceutical Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bizhan Malaekeh-Nikouei
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Asma Mahmoudi
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bibi Sedigheh Fazly Bazzaz
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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6
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Manna P, Davies T, Hoffmann M, Johnson MP, Schlau-Cohen GS. Membrane-dependent heterogeneity of LHCII characterized using single-molecule spectroscopy. Biophys J 2021; 120:3091-3102. [PMID: 34214527 DOI: 10.1016/j.bpj.2021.06.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/16/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022] Open
Abstract
In green plants, light harvesting complex of Photosystem II (LHCII) absorbs and transports excitation energy toward the photosynthetic reaction centers and serves as a site for energy-dependent nonphotochemical quenching (qE), the photoprotective dissipation of energy as heat. LHCII is thought to activate dissipation through conformational changes that change the photophysical behaviors. Understanding this balance requires a characterization of how the conformations of LHCII, and thus its photophysics, are influenced by individual factors within the membrane environment. Here, we used ensemble and single-molecule fluorescence to characterize the excited-state lifetimes and switching kinetics of LHCII embedded in nanodisc- and liposome-based model membranes of various sizes and lipid compositions. As the membrane area decreased, the quenched population and the rate of conformational dynamics both increased because of interactions with other proteins, the aqueous solution, and/or disordered lipids. Although the conformational states and dynamics were similar in both thylakoid and asolectin lipids, photodegradation increased with thylakoid lipids, likely because of their charge and pressure properties. Collectively, these findings demonstrate the ability of membrane environments to tune the conformations and photophysics of LHCII.
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Affiliation(s)
- Premashis Manna
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Thomas Davies
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, United Kingdom
| | - Madeline Hoffmann
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Matthew P Johnson
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, United Kingdom
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7
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Cai W, Liu J, Zheng L, Xu Z, Chen J, Zhong J, Song Z, Xu X, Chen S, Jiao C, Guo J, Yi Y, Zhang Y. Study on the anti-infection ability of vancomycin cationic liposome combined with polylactide fracture internal fixator. Int J Biol Macromol 2021; 167:834-844. [PMID: 33181211 DOI: 10.1016/j.ijbiomac.2020.11.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/25/2020] [Accepted: 11/06/2020] [Indexed: 02/05/2023]
Abstract
A polylactide composite fracture fixator loaded with vancomycin cationic liposome (PLA@VL) was prepared by reverse evaporation method. The method of cationic liposome encapsulating vancomycin could effectively improve antibacterial property and achieve drug sustained release effect, so as to reduce toxicity of antibiotics in vivo. Scanning electron microscope (SEM) was used to observe morphology and Fourier transform infrared spectroscopy (FTIR) was used to detect the composition of the internal fixator. In vitro drug release model, in vitro degradation model and body fluid osteogenesis model were designed in this study. On the other hand, the experiments of inhibition zone and MC3T3-E1 osteoblasts in mice were conducted to explore antibacterial property, cell activity and adhesion of the PLA@VL composite internal fixator. Alkaline phosphatase (ALP) staining method and alizarin red assay were used to detect the osteogenic induction ability of the composite internal fixator. Finally, mice fracture models were established to verify osteogenic and anti-infection abilities of the composite internal fixator in vivo. The results showed that MC3T3-E1 cells had better adhesion and proliferation abilities on the PLA@VL composite internal fixator than on the PLA fixator, which indicated that the PLA@VL composite internal fixator possessed excellent osteogenic and anti-infection abilities both in vivo and in vitro. Therefore, the above experiments showed that the fracture internal fixator combined with vancomycin cationic liposome had better biocompatibility, antibacterial ability and osteogenic ability, which provides a promising anti-infection material for the clinical field of fracture.
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Affiliation(s)
- Weibin Cai
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Jiandong Liu
- Department of Anesthesiology, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Liling Zheng
- Department of Cardiothoracic Surgery, Quanzhou First Hospital, Fujian Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Zhiyang Xu
- Department of Cardiothoracic Surgery, The First Hospital of Putian City, Putian, Fujian 351100, China
| | - Jianming Chen
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Jing Zhong
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Zhiming Song
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Xiaoping Xu
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Songlin Chen
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Changjie Jiao
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Junhua Guo
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China
| | - Yunfeng Yi
- Department of Cardiothoracic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, China.
| | - Yanmei Zhang
- Department of Pharmacology, Shantou University Medical College, 22 Xin Ling Road, Shantou, Guangdong 515041, China.
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8
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Sadeghi S, Bakhshandeh H, Ahangari Cohan R, Peirovi A, Ehsani P, Norouzian D. Synergistic Anti-Staphylococcal Activity Of Niosomal Recombinant Lysostaphin-LL-37. Int J Nanomedicine 2019; 14:9777-9792. [PMID: 31849468 PMCID: PMC6911324 DOI: 10.2147/ijn.s230269] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/07/2019] [Indexed: 11/29/2022] Open
Abstract
Purpose Staphylococcus aureus is the most common persistent pathogen in humans, so development of new formulations to combat pathogen invasion is quite necessary. Methods In the current study, for the first time, the synergistic activity of recombinant lysostaphin and LL-37 peptide was studied against S. aureus. Moreover, different niosomal formulations of the peptide and protein were prepared and analyzed in terms of size, shape, zeta potential, and entrapment efficiency. Also, a long-term antibacterial activity of the best niosomal formulation and free forms was measured against S. aureus in vitro. Results The optimal niosomal formulation was obtained by mixing the surfactants (span60 and tween60; 2:1 w/w), cholesterol, and dicetylphosphate at a ratio of 47:47:6, respectively. They showed uniform spherical shapes with the size of 565 and 325 nm for lysostaphin and LL-37, respectively. This formulation showed high entrapment efficiency for the peptide, protein, and a slow-release profile over time. Release kinetic was best fitted by Higuchi model indicating a diffusion-based release of the drugs. The lysostaphin/LL-37 niosomal formulation synergistically inhibited growth of S. aureus for up to 72 hours. However, the same amounts of free forms of both anti-microbial agents could not hold the anti-microbial effect and growth was seen in the following 72 hours. Cytotoxicity assay specified that lysostaphin/LL-37 niosomal combination had no deleterious effect on normal fibroblast cells at effective antimicrobial concentrations. Conclusion This study indicated that the use of lysostaphin in combination with LL-37, either in niosomal or free forms, synergistically inhibited growth of S. aureus in vitro. In addition, niosomal preparation of antimicrobial agents could provide a long-term protection against bacterial infections.
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Affiliation(s)
- Somayeh Sadeghi
- Department of Nano Biotechnology, New Technology Research Group, Pasteur Institute of Iran, Tehran, Iran.,Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | - Haleh Bakhshandeh
- Department of Nano Biotechnology, New Technology Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Reza Ahangari Cohan
- Department of Nano Biotechnology, New Technology Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Afshin Peirovi
- Department of Nano Biotechnology, New Technology Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Parastoo Ehsani
- Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | - Dariush Norouzian
- Department of Nano Biotechnology, New Technology Research Group, Pasteur Institute of Iran, Tehran, Iran
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9
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Salatin S, Lotfipour F, Jelvehgari M. A brief overview on nano-sized materials used in the topical treatment of skin and soft tissue bacterial infections. Expert Opin Drug Deliv 2019; 16:1313-1331. [PMID: 31738622 DOI: 10.1080/17425247.2020.1693998] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Skin and soft tissue infections are a significant clinical problem that can happen anywhere on the body. Bacteria are the most common cause of skin and soft tissue infections in humans. Despite the fact that there is a lot of antimicrobial agents and antibiotics for elucidating bacterial infections, the prevention and control of infectious diseases continue to be one of the greatest challenges for public health worldwide. At the present time, an alarming increase in multidrug resistance instantly requests to find suitable alternatives to current antibiotics. Therefore, drug resistance has been attempted to be resolved by the development of new classes of antimicrobial agents or targeted delivery systems for antibacterial drugs using nanotechnology.Area covered: The present review summarizes the emerging topical efforts to support the use of nano-sized materials as a new opportunity to combat today's skin infectious diseases.Expert opinion: Nano-sized materials can overcome the stratum corneum barrier and deliver drugs specifically to bacterial skin infections with trivial side effects. Depending on the physicochemical characteristics of nano-scaled materials, they can specifically be selected to target bacterial pathogens and also to get into the skin layers. These systems can overcome the antibiotic-resistance mechanisms and help us to the design of novel topical formulations that will make administration of antibacterial compounds safer, easier and more convenient.
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Affiliation(s)
- Sara Salatin
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzaneh Lotfipour
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutical and Food Control, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mitra Jelvehgari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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10
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Kensche A, Dürasch A, König B, Henle T, Hannig C, Hannig M. Characterization of the in situ pellicle ultrastructure formed under the influence of bovine milk and milk protein isolates. Arch Oral Biol 2019; 104:133-140. [PMID: 31202148 DOI: 10.1016/j.archoralbio.2019.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVES The present study aimed to investigate if bovine milk or milk protein isolates, respectively, alter the ultrastructure of thein situ pellicle and might therefore have an influence on oral health. METHODS In situ pellicle samples were formed on bovine enamel slabs exposed in the oral cavity of three subjects for 6, 30, 60 or 120 min. After 3 min of pellicle formation, mouthrinses were performed for 3 min with (non-)homogenized UHT- or fresh milk (0.3% or 3.8% fat), 30% UHT-treated cream or different types of casein- or milk protein isolates containing preparations. The specimens were removed after the exposure times and transmission electron microscopy (TEM) was performed. Native pellicle samples served as controls. RESULTS Topical ultrastructural pellicle modifications were detected after mouthrinses with all types of homogenized UHT- or fresh milk and after the application of a 3% native casein micelles containing experimental solution. Atypical globular protein structures, identified as casein micelles, were temporarily adsorbed onto the pellicle. They were closely associated with lipid droplets. Furthermore, the mouthrinses occasionally affected the morphology of salivary bacteria. However, no notable ultrastructural alterations remained after 120 min of pellicle formation. CONCLUSION For the first time, bovine milk- and micellar casein-induced pellicle modifications were revealed by TEM. The adsorption of micellar casein is possibly due to its molecular interactions. CLINICAL SIGNIFICANCE Bovine milk or micellar caseins provide some potential for the development of preventive strategies against bacterial biofilm formation or erosive processes at the tooth surface.
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Affiliation(s)
- A Kensche
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307 Dresden, Germany.
| | - A Dürasch
- Chair of Food Chemistry, TU Dresden, Dresden, Germany
| | - B König
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D- 66421 Homburg/Saar, Germany
| | - T Henle
- Chair of Food Chemistry, TU Dresden, Dresden, Germany
| | - C Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307 Dresden, Germany
| | - M Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D- 66421 Homburg/Saar, Germany
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11
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Abstract
We report the ability to readily tune NO release from N-diazeniumdiolate-encapsulated liposomal structures by altering the NO donor molecule structure and/or phospholipid composition (independently or in combination). While encapsulating more stable NO donors expectedly enhanced the NO release (up to 48 h) from the liposomes, the phospholipid headgroup surface area proved equally useful in controlling NO-release kinetics by influencing the water uptake and concomitant N-diazeniumdiolate NO donor breakdown (to NO). The potential therapeutic utility of the NO-releasing liposomes was further assessed in biological/proteinaceous fluids. The NO-release kinetics were similar in buffer and serum.
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Affiliation(s)
- Dakota J Suchyta
- Department of Chemistry, The University of North Carolina at Chapel Hill, 131 South Rd., Chapel Hill, North Carolina, 27599
| | - Mark H Schoenfisch
- Department of Chemistry, The University of North Carolina at Chapel Hill, 131 South Rd., Chapel Hill, North Carolina, 27599
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12
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Whether a novel drug delivery system can overcome the problem of biofilms in respiratory diseases? Drug Deliv Transl Res 2016; 7:179-187. [DOI: 10.1007/s13346-016-0349-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Hyaluronate nanoparticles included in polymer films for the prolonged release of vitamin E for the management of skin wounds. Eur J Pharm Sci 2016; 83:203-11. [DOI: 10.1016/j.ejps.2016.01.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 11/23/2015] [Accepted: 01/03/2016] [Indexed: 01/28/2023]
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H. Kasper S, Hart R, Bergkvist M, A. Musah R, C. Cady N. Zein nanocapsules as a tool for surface passivation, drug delivery and biofilm prevention. AIMS Microbiol 2016. [DOI: 10.3934/microbiol.2016.4.422] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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15
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Colzi I, Troyan AN, Perito B, Casalone E, Romoli R, Pieraccini G, Škalko-Basnet N, Adessi A, Rossi F, Gonnelli C, Ristori S. Antibiotic delivery by liposomes from prokaryotic microorganisms: Similia cum similis works better. Eur J Pharm Biopharm 2015; 94:411-8. [DOI: 10.1016/j.ejpb.2015.06.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/27/2015] [Accepted: 06/09/2015] [Indexed: 11/29/2022]
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16
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Sugano M, Morisaki H, Negishi Y, Endo-Takahashi Y, Kuwata H, Miyazaki T, Yamamoto M. Potential effect of cationic liposomes on interactions with oral bacterial cells and biofilms. J Liposome Res 2015; 26:156-62. [PMID: 26152278 DOI: 10.3109/08982104.2015.1063648] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CONTEXT Although oral infectious diseases have been attributed to bacteria, drug treatments remain ineffective because bacteria and their products exist as biofilms. Cationic liposomes have been suggested to electrostatically interact with the negative charge on the bacterial surface, thereby improving the effects of conventional drug therapies. However, the electrostatic interaction between oral bacteria and cationic liposomes has not yet been examined in detail. OBJECTIVE The aim of the present study was to examine the behavior of cationic liposomes and Streptococcus mutans in planktonic cells and biofilms. MATERIALS AND METHODS Liposomes with or without cationic lipid were prepared using a reverse-phase evaporation method. The zeta potentials of conventional liposomes (without cationic lipid) and cationic liposomes were -13 and 8 mV, respectively, and both had a mean particle size of approximately 180 nm. We first assessed the interaction between liposomes and planktonic bacterial cells with a flow cytometer. We then used a surface plasmon resonance method to examine the binding of liposomes to biofilms. We confirmed the binding behavior of liposomes with biofilms using confocal laser scanning microscopy. RESULTS The interactions between cationic liposomes and S. mutans cells and biofilms were stronger than those of conventional liposomes. Microscopic observations revealed that many cationic liposomes interacted with the bacterial mass and penetrated the deep layers of biofilms. DISCUSSION AND CONCLUSION In this study, we demonstrated that cationic liposomes had higher affinity not only to oral bacterial cells, but also biofilms than conventional liposomes. This electrostatic interaction may be useful as a potential drug delivery system to biofilms.
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Affiliation(s)
- Marika Sugano
- a Division of Biomaterials & Engineering , Department of Conservative Dentistry, Showa University School of Dentistry , Shinagawa-ku, Tokyo , Japan .,b Department of Periodontology , Showa University School of Dentistry , Ohta-ku, Tokyo , Japan .,c Japan Society for the Promotion of Science (JSPS) , Chiyoda-ku, Tokyo , Japan
| | - Hirobumi Morisaki
- d Department of Oral Microbiology , Showa University School of Dentistry , Shinagawa-ku, Tokyo , Japan , and
| | - Yoichi Negishi
- e Department of Drug Delivery and Molecular Biopharmaceutics , School of Pharmacy, Tokyo University of Pharmacy and Life Sciences , Hachioji , Tokyo , Japan
| | - Yoko Endo-Takahashi
- e Department of Drug Delivery and Molecular Biopharmaceutics , School of Pharmacy, Tokyo University of Pharmacy and Life Sciences , Hachioji , Tokyo , Japan
| | - Hirotaka Kuwata
- d Department of Oral Microbiology , Showa University School of Dentistry , Shinagawa-ku, Tokyo , Japan , and
| | - Takashi Miyazaki
- a Division of Biomaterials & Engineering , Department of Conservative Dentistry, Showa University School of Dentistry , Shinagawa-ku, Tokyo , Japan
| | - Matsuo Yamamoto
- b Department of Periodontology , Showa University School of Dentistry , Ohta-ku, Tokyo , Japan
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Saeui CT, Urias E, Liu L, Mathew MP, Yarema KJ. Metabolic glycoengineering bacteria for therapeutic, recombinant protein, and metabolite production applications. Glycoconj J 2015; 32:425-41. [PMID: 25931032 DOI: 10.1007/s10719-015-9583-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/16/2015] [Accepted: 03/19/2015] [Indexed: 12/12/2022]
Abstract
Metabolic glycoengineering is a specialization of metabolic engineering that focuses on using small molecule metabolites to manipulate biosynthetic pathways responsible for oligosaccharide and glycoconjugate production. As outlined in this article, this technique has blossomed in mammalian systems over the past three decades but has made only modest progress in prokaryotes. Nevertheless, a sufficient foundation now exists to support several important applications of metabolic glycoengineering in bacteria based on methods to preferentially direct metabolic intermediates into pathways involved in lipopolysaccharide, peptidoglycan, teichoic acid, or capsule polysaccharide production. An overview of current applications and future prospects for this technology are provided in this report.
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Affiliation(s)
- Christopher T Saeui
- Department of Biomedical Engineering and the Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD, USA
| | - Esteban Urias
- Department of Biomedical Engineering and the Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD, USA
| | - Lingshu Liu
- Department of Biomedical Engineering and the Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD, USA
| | - Mohit P Mathew
- Department of Biomedical Engineering and the Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD, USA
| | - Kevin J Yarema
- Department of Biomedical Engineering and the Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD, USA.
- Translational Tissue Engineering Center, The Johns Hopkins University, 5029 Robert H. & Clarice Smith Building, 400 North Broadway, Baltimore, MD, 21231, USA.
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Horev B, Klein MI, Hwang G, Li Y, Kim D, Koo H, Benoit DS. pH-activated nanoparticles for controlled topical delivery of farnesol to disrupt oral biofilm virulence. ACS NANO 2015; 9:2390-404. [PMID: 25661192 PMCID: PMC4395463 DOI: 10.1021/nn507170s] [Citation(s) in RCA: 213] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Development of effective therapies to control oral biofilms is challenging, as topically introduced agents must avoid rapid clearance from biofilm-tooth interfaces while targeting biofilm microenvironments. Additionally, exopolysaccharides-matrix and acidification of biofilm microenvironments are associated with cariogenic (caries-producing) biofilm virulence. Thus, nanoparticle carriers capable of binding to hydroxyapatite (HA), saliva-coated HA (sHA), and exopolysaccharides with enhanced drug release at acidic pH were developed. Nanoparticles are formed from diblock copolymers composed of 2-(dimethylamino)ethyl methacrylate (DMAEMA), butyl methacrylate (BMA), and 2-propylacrylic acid (PAA) (p(DMAEMA)-b-p(DMAEMA-co-BMA-co-PAA)) that self-assemble into ∼21 nm cationic nanoparticles. Nanoparticles exhibit outstanding adsorption affinities (∼244 L-mmol(-1)) to negatively charged HA, sHA, and exopolysaccharide-coated sHA due to strong electrostatic interactions via multivalent tertiary amines of p(DMAEMA). Owing to hydrophobic cores, nanoparticles load farnesol, a hydrophobic antibacterial drug, at ∼22 wt %. Farnesol release is pH-dependent with t1/2 = 7 and 15 h for release at pH 4.5 and 7.2, as nanoparticles undergo core destabilization at acidic pH, characteristic of cariogenic biofilm microenvironments. Importantly, topical applications of farnesol-loaded nanoparticles disrupted Streptococcus mutans biofilms 4-fold more effectively than free farnesol. Mechanical stability of biofilms treated with drug-loaded nanoparticles was compromised, resulting in >2-fold enhancement in biofilm removal under shear stress compared to free farnesol and controls. Farnesol-loaded nanoparticles effectively attenuated biofilm virulence in vivo using a clinically relevant topical treatment regimen (2×/day) in a rodent dental caries disease model. Strikingly, treatment with farnesol-loaded nanoparticles reduced both the number and severity of carious lesions, while free farnesol had no effect. Nanoparticle carriers have great potential to enhance the efficacy of antibiofilm agents through multitargeted binding and pH-responsive drug release due to microenvironmental triggers.
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Affiliation(s)
- Benjamin Horev
- Department of Biomedical Engineering, University of Rochester, NY 14627, United States
| | - Marlise I. Klein
- Center for Oral Biology, University of Rochester, NY 14627, United States
| | - Geelsu Hwang
- Biofilm Research Lab, Levy Center for Oral Health, University of Pennsylvania, PA 19104, United States
| | - Yong Li
- Biofilm Research Lab, Levy Center for Oral Health, University of Pennsylvania, PA 19104, United States
| | - Dongyeop Kim
- Biofilm Research Lab, Levy Center for Oral Health, University of Pennsylvania, PA 19104, United States
| | - Hyun Koo
- Center for Oral Biology, University of Rochester, NY 14627, United States
- Biofilm Research Lab, Levy Center for Oral Health, University of Pennsylvania, PA 19104, United States
- Department of Orthodontics and Divisions of Pediatric Dentistry and Community Oral Health, School of Dental Medicine, University of Pennsylvania, PA 19104, United States
- Address correspondence to: ;
| | - Danielle S.W. Benoit
- Department of Biomedical Engineering, University of Rochester, NY 14627, United States
- Department of Chemical Engineering, University of Rochester, NY 14627, United States
- Center of Musculoskeletal Research, University of Rochester, NY 14627, United States
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Shunmugaperumal T, Kaur V, Thenrajan RS. Lipid- and Polymer-Based Drug Delivery Carriers for Eradicating Microbial Biofilms Causing Medical Device-Related Infections. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 831:147-89. [DOI: 10.1007/978-3-319-09782-4_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Jardeleza C, Rao S, Thierry B, Gajjar P, Vreugde S, Prestidge CA, Wormald PJ. Liposome-encapsulated ISMN: a novel nitric oxide-based therapeutic agent against Staphylococcus aureus biofilms. PLoS One 2014; 9:e92117. [PMID: 24658315 PMCID: PMC3962386 DOI: 10.1371/journal.pone.0092117] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 02/17/2014] [Indexed: 11/28/2022] Open
Abstract
Background Staphylococcus aureus in its biofilm form has been associated with recalcitrant chronic rhinosinusitis with significant resistance to conventional therapies. This study aims to determine if liposomal-encapsulation of a precursor of the naturally occurring antimicrobial nitric oxide (NO) enhances its desired anti-biofilm effects against S. aureus, in the hope that improving its efficacy can provide an effective topical agent for future clinical use. Methodology S. aureus ATCC 25923 biofilms were grown in-vitro using the Minimum Biofilm Eradication Concentration (MBEC) device and exposed to 3 and 60 mg/mL of the NO donor isosorbide mononitrate (ISMN) encapsulated into different anionic liposomal formulations based on particle size (unilamellar ULV, multilamellar MLV) and lipid content (5 and 25 mM) at 24 h and 5 min exposure times. Biofilms were viewed using Live-Dead Baclight stain and confocal scanning laser microscopy and quantified using the software COMSTAT2. Results At 3 and 60 mg/mL, ISMN-ULV liposomes had comparable and significant anti-biofilm effects compared to untreated control at 24 h exposure (p = 0.012 and 0.02 respectively). ULV blanks also had significant anti-biofilm effects at both 24 h and 5 min exposure (p = 0.02 and 0.047 respectively). At 5 min exposure, 60 mg/mL ISMN-MLV liposomes appeared to have greater anti-biofilm effects compared to pure ISMN or ULV particles. Increasing liposomal lipid content improved the anti-biofilm efficacy of both MLV and ULVs at 5 min exposure. Conclusion Liposome-encapsulated “nitric oxide” is highly effective in eradicating S. aureus biofilms in-vitro, giving great promise for use in the clinical setting to treat this burdensome infection. Further studies however are needed to assess its safety and efficacy in-vivo before clinical translation is attempted.
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Affiliation(s)
- Camille Jardeleza
- Department of Surgery- Otorhinolaryngology Head and Neck Surgery, The Queen Elizabeth Hospital, and the University of Adelaide, Adelaide, South Australia
| | - Shasha Rao
- The Ian Wark Institute, University of South Australia, Mawson Lakes, South Australia
| | - Benjamin Thierry
- The Ian Wark Institute, University of South Australia, Mawson Lakes, South Australia
| | - Pratik Gajjar
- The Ian Wark Institute, University of South Australia, Mawson Lakes, South Australia
| | - Sarah Vreugde
- Department of Surgery- Otorhinolaryngology Head and Neck Surgery, The Queen Elizabeth Hospital, and the University of Adelaide, Adelaide, South Australia
| | - Clive A. Prestidge
- The Ian Wark Institute, University of South Australia, Mawson Lakes, South Australia
| | - Peter-John Wormald
- Department of Surgery- Otorhinolaryngology Head and Neck Surgery, The Queen Elizabeth Hospital, and the University of Adelaide, Adelaide, South Australia
- * E-mail:
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Drug Delivery Systems That Eradicate and/or Prevent Biofilm Formation. SPRINGER SERIES ON BIOFILMS 2014. [DOI: 10.1007/978-3-642-53833-9_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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22
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Polymer coated liposomes for dental drug delivery – Interactions with parotid saliva and dental enamel. Eur J Pharm Sci 2013; 50:78-85. [DOI: 10.1016/j.ejps.2013.03.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 02/27/2013] [Accepted: 03/05/2013] [Indexed: 11/22/2022]
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Kasimanickam RK, Ranjan A, Asokan GV, Kasimanickam VR, Kastelic JP. Prevention and treatment of biofilms by hybrid- and nanotechnologies. Int J Nanomedicine 2013; 8:2809-19. [PMID: 23946652 PMCID: PMC3739460 DOI: 10.2147/ijn.s44100] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Bacteria growing as adherent biofilms are difficult to treat and frequently develop resistance to antimicrobial agents. To counter biofilms, various approaches, including prevention of bacterial surface adherence, application of device applicators, and assimilation of antimicrobials in targeted drug delivery machinery, have been utilized. These methods are also combined to achieve synergistic bacterial killing. This review discusses various multimodal technologies, presents general concepts, and describes therapies relying on the principles of electrical energy, ultrasound, photodynamics, and targeted drug delivery for prevention and treatment of biofilms.
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Affiliation(s)
- Ramanathan K Kasimanickam
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA.
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Cottenye N, Cui ZK, Wilkinson KJ, Barbeau J, Lafleur M. Interactions between non-phospholipid liposomes containing cetylpyridinium chloride and biofilms of Streptococcus mutans: modulation of the adhesion and of the biodistribution. BIOFOULING 2013; 29:817-827. [PMID: 23826726 DOI: 10.1080/08927014.2013.807505] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Cetylpyridinium chloride (CPC) is a surfactant that binds strongly to bacteria and bacterial biofilms. In this study, fluorescence-based techniques were used to determine the penetration and adhesion of CPC when it was introduced in liposomes. In spite of a reduced adhesion as compared to pure CPC micelles, CPC-containing liposomes adhered significantly to the biofilms of Streptococcus mutans. In contrast, no binding was observed for liposomes that were composed of phosphatidylcholine-cholesterol. The influence of the charge of the liposome on its adhesion to biofilms was studied using cholesterol (Chol) and cholesterol sulfate (Schol). In spite of similar binding to the biofilms, positively charged CPC/Chol liposomes were located mainly in the core of the biofilm microcolonies, whereas the negatively charged CPC/Schol liposomes were mainly concentrated at their periphery. This effect may be attributed to the different availability of the CPC head group. In summary, this work demonstrates the high potential for tailoring drug nanovectors by modulating sterol selection in order to selectively target and bind biofilms.
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Affiliation(s)
- Nicolas Cottenye
- Department of Chemistry, Center for Self-Assembled Chemical Structures (CSACS), Université de Montréal, Montréal, QC, Canada
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Li C, Zhang X, Huang X, Wang X, Liao G, Chen Z. Preparation and characterization of flexible nanoliposomes loaded with daptomycin, a novel antibiotic, for topical skin therapy. Int J Nanomedicine 2013; 8:1285-92. [PMID: 23569376 PMCID: PMC3615926 DOI: 10.2147/ijn.s41695] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The purpose of this study was to investigate flexible nanoliposomes for mediating topical delivery of daptomycin, and to document permeation rates and bacteriostatic activity towards skin infections. Response surface methodology was used to optimize the daptomycin-loaded flexible nanoliposomes (DAP-FL), and the amount of drug loaded into the particles was evaluated as the investigation index. The optimal lipid ratio was lecithin to sodium cholate 17:1 (w/w) and the lipid to drug ratio was 14:1 (w/w). The hydration temperature was set at 37°C and the duration of treatment with ultrasound was 20 minutes. The DAP-FL obtained had a small mean particle size (55.4 nm) with a narrow size distribution (polydispersity index 0.15). The mean entrapment efficiency was 87.85% ± 2.15% and the mean percent drug loading was 5.61% ± 0.14%. Using skin mounted between the donor and receptor compartments of a modified Franz diffusion cell, the percentage and quantity of cumulative daptomycin permeation from DAP-FL within 12 hours were measured at 96.28% ± 0.70% and (132.23 ± 17.73) μg/cm(2) *5 = 661.15 ± 88.65 μg/cm(2), directly, showing rapid and efficient antibacterial activity against Staphylococcus aureus. Following local administration of DAP-FL, daptomycin was detected in multilayer tissues within the skin and underlying structures in the dorsal skin of the mouse. Effective therapeutic concentrations were maintained for several hours, and significantly inhibited bacterial growth and injury-induced biofilms. These results demonstrate that the DAP-FL can enhance the ability of daptomycin to permeate the skin efficiently, where it has a powerful antibacterial action and activity against biofilms. This novel formulation of daptomycin has potential as a new approach in the clinical application of daptomycin.
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Affiliation(s)
- Chong Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing, People's Republic of China
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27
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Wallace SJ, Li J, Nation RL, Prankerd RJ, Boyd BJ. Interaction of colistin and colistin methanesulfonate with liposomes: colloidal aspects and implications for formulation. J Pharm Sci 2012; 101:3347-59. [PMID: 22623044 DOI: 10.1002/jps.23203] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 03/23/2012] [Accepted: 04/01/2012] [Indexed: 12/30/2022]
Abstract
Interaction of colistin and colistin methanesulfonate (CMS) with liposomes has been studied with the view to understanding the limitations to the use of liposomes as a more effective delivery system for pulmonary inhalation of this important class of antibiotic. Thus, in this study, liposomes containing colistin or CMS were prepared and characterized with respect to colloidal behavior and drug encapsulation and release. Association of anionic CMS with liposomes induced negative charge on the particles. However, degradation of the CMS to form cationic colistin over time was directly correlated with charge reversal and particle aggregation. The rate of degradation of CMS was significantly more rapid when associated with the liposome bilayer than when compared with the same concentration in aqueous solution. Colistin liposomes carried positive charge and were stable. Encapsulation efficiency for colistin was approximately 50%, decreasing with increasing concentration of colistin. Colistin was rapidly released from liposomes on dilution. Although the studies indicate limited utility of colistin or CMS liposomes for long duration controlled-release applications, colistin liposomes were highly stable and may present a potential opportunity for coformulation of colistin with a second antibiotic to colocalize the two drugs after pulmonary delivery.
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Affiliation(s)
- Stephanie J Wallace
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
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Chang CH, Liang CH, Hsieh YY, Chou TH. Molecular Packing and Lateral Interactions of Distearoylphosphatidylcholine with Dihexadecyldimethylammonium Bromide in Langmuir Monolayers and Vesicles. J Phys Chem B 2012; 116:2455-63. [DOI: 10.1021/jp211264h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chien-Hsiang Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Chia-Hua Liang
- Department of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan
717, Taiwan
| | - Yu-Ying Hsieh
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Tzung-Han Chou
- Department of Chemical and Materials
Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan
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Hui T, Yongqing X, Tiane Z, Gang L, Yonggang Y, Muyao J, Jun L, Jing D. Treatment of osteomyelitis by liposomal gentamicin-impregnated calcium sulfate. Arch Orthop Trauma Surg 2009; 129:1301-8. [PMID: 19034468 DOI: 10.1007/s00402-008-0782-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2008] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Traditional therapy of staphylococcal osteomyelitis is ineffective in producing complete sterilization of infected bones due to the formation of the Staphylococcus aureus biofilms. The aim of this study was to develop a new drug-delivery system of antibiotics for treatment of chronic experimental osteomyelitis. METHODS In the current work, cationic liposomal gentamicin was prepared and impregnated in calcium sulfate (CS), and tested for anti-biofilm activities in vitro and in vivo. RESULTS AND CONCLUSIONS The combination of liposomal gentamicin and CS showed initial burst-release of active liposomal gentamicin and had continuous-release (12 days). Liposomal gentamicin released from CS had the same anti-biofilm activity with the liposomal gentamicin prepared freshly. Meanwhile, both agents were more effective relative to free gentamicin at low drug concentration. Therapeutic trials with antibiotics given intravenously revealed that free gentamicin for 14 days was ineffective in sterilizing bone. Treatment with liposomal gentamicin for 14 days resulted in recovery of 33.3% of treated animals, which was the lower slightly than the result treated with implantation of gentamicin-impregnated CS (66.7%). Complete sterilization of bone tissues on cultures (100% cure) was obtained only in the group of liposomal gentamicin-impregnated CS treated for 14 days. The new drug-delivery system was effective in preventing biofilm infection in a contaminated defect, and it could also be used clinically for bacterial infections in the conditions like plaque formation or in arresting biofilm formation in the implanted devices or dead bone of osteomyelitis.
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Affiliation(s)
- Tang Hui
- Orthopedic Center, Kunming General Hospital of Chengdu Military Command, Kunming, China
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Novel anion liposome-encapsulated antisense oligonucleotide restores susceptibility of methicillin-resistant Staphylococcus aureus and rescues mice from lethal sepsis by targeting mecA. Antimicrob Agents Chemother 2009; 53:2871-8. [PMID: 19433567 DOI: 10.1128/aac.01542-08] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Beta-lactam resistance in methicillin (meticillin)-resistant Staphylococcus aureus (MRSA) is caused by the production of an additional low-affinity penicillin-binding protein 2a, which is encoded by the mecA gene. The disruption of mecA may inhibit mecA expression and thereafter lead to the restoration of MRSA susceptibility to beta-lactams. In this study, we developed a novel anionic liposome for encapsulating and delivering the complexes of a specific anti-mecA phosphorothioate oligodeoxynucleotide (PS-ODN833) and polycation polyethylenimine (PEI). The efficiencies of liposome encapsulation of the complexes were around 79.7% +/- 2.7%. The liposomes showed sustained release of PS-ODN833 at 37 degrees C but very low levels of release at 4 degrees C and room temperature. The addition of the encapsulated anti-mecA PS-ODN833-PEI complex to cultures of MRSA strains caused 45, 76, 82, and 93% reductions in mecA expression, accompanied by the inhibition of MRSA growth on Mueller-Hinton agar containing oxacillin (6 microg/ml) in a concentration-dependent manner. The encapsulated-PS-ODN833 treatment also reduced the MICs of five of the most commonly used antibiotics for MRSA clinical isolates to values within the sensitivity range and rescued mice from MRSA-caused septic death by downregulating mecA. The survival rates of septic mice increased from 0% for the control group to 53% for the PS-ODN833-treated group. The results were associated with reductions of bacterial titers in the blood of surviving mice. The findings of the present study indicate that an antisense oligodeoxynucleotide targeted to mecA can significantly restore the susceptibility of MRSA to existing beta-lactam antibiotics, providing an apparently novel strategy for treating MRSA infections.
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The potential of lipid- and polymer-based drug delivery carriers for eradicating biofilm consortia on device-related nosocomial infections. J Control Release 2008; 128:2-22. [DOI: 10.1016/j.jconrel.2008.01.006] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Accepted: 01/08/2008] [Indexed: 11/23/2022]
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Suci PA, Berglund DL, Liepold L, Brumfield S, Pitts B, Davison W, Oltrogge L, Hoyt KO, Codd S, Stewart PS, Young M, Douglas T. High-density targeting of a viral multifunctional nanoplatform to a pathogenic, biofilm-forming bacterium. ACTA ACUST UNITED AC 2007; 14:387-98. [PMID: 17462574 DOI: 10.1016/j.chembiol.2007.02.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Revised: 01/10/2007] [Accepted: 02/07/2007] [Indexed: 11/22/2022]
Abstract
Nanomedicine directed at diagnosis and treatment of infections can benefit from innovations that have substantially increased the variety of available multifunctional nanoplatforms. Here, we targeted a spherical, icosahedral viral nanoplatform to a pathogenic, biofilm-forming bacterium, Staphylococcus aureus. Density of binding mediated through specific protein-ligand interactions exceeded the density expected for a planar, hexagonally close-packed array. A multifunctionalized viral protein cage was used to load imaging agents (fluorophore and MRI contrast agent) onto cells. The fluorescence-imaging capability allowed for direct observation of penetration of the nanoplatform into an S. aureus biofilm. These results demonstrate that multifunctional nanoplatforms based on protein cage architectures have significant potential as tools for both diagnosis and targeted treatment of recalcitrant bacterial infections.
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Affiliation(s)
- Peter A Suci
- Department of Microbiology, Center for BioInspired Nanomaterials, Montana State University, Bozeman, MT 59717, USA
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Colas JC, Shi W, Rao VSNM, Omri A, Mozafari MR, Singh H. Microscopical investigations of nisin-loaded nanoliposomes prepared by Mozafari method and their bacterial targeting. Micron 2007; 38:841-7. [PMID: 17689087 DOI: 10.1016/j.micron.2007.06.013] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Nanoencapsulation may improve activity of protein or polypeptide antimicrobials against a variety of microorganisms. In this study, nanoliposomes prepared from different lipids (Phospholipon 90H, Phospholipon 100H, dipalmitoylphosphatidylcholine (DPPC), stearylamine (SA), dicetyl phosphate (DCP) and cholesterol) by a new, non-toxic and scalable method, were tested for their capacity to encapsulate nisin Z and target bacteria (Bacillus subtilis and Pseudomonasaeruginosa). Factors affecting the entrapment efficiency (charge and cholesterol concentration in the vesicles) and stability of nanoliposomes were assessed. The nanoliposomes and their bacterial targeting were visualised, using different microscopes under air and liquid environments. Nisin was entrapped in different nanoliposomes with encapsulation efficiencies (EE) ranging from 12% to 54%. Anionic vesicles possessed the highest EE for nisin while increase in cholesterol content in lipid membranes up to 20% molar ratio resulted in a reduction in EE. Stability of nanoliposome-encapsulated nisin was demonstrated for at least 14 months at 4 degrees C (DPPC:DCP:CHOL vesicles) and for 12 months at 25 degrees C (DPPC:SA:CHOL vesicles).
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Vyas SP, Sihorkar V, Jain S. Mannosylated liposomes for bio-film targeting. Int J Pharm 2007; 330:6-13. [PMID: 16997519 DOI: 10.1016/j.ijpharm.2006.08.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2006] [Revised: 08/19/2006] [Accepted: 08/25/2006] [Indexed: 10/24/2022]
Abstract
Vesicular systems in general are investigated to achieve bacterial bio-film targeting as their architecture mimics bio-membranes in terms of structure and bio-behavior. This paper elaborates upon the role of the inherent characteristics of the carrier system and further envisages the role of anchored ligands in navigating the contents in the vicinity of bio-films. Vesicles in the present study were coated with hydrophobic derivatives of mannan (cholesteryl mannan and sialo-mannan). The prepared vesicles were characterized for size, shape, percentage entrapment and ligand binding specificity and results were compared with the uncoated versions. Using a set of in vitro and in vivo models, the bio-film targeting potential of plain and mannosylated liposomal formulations were compared. Results suggested that mannosylated vesicles could be effectively targeted to the model bacterial bio-films, compared with plain vesicles. Moreover, the sialo-mannan coated liposomes recorded superior targetability as reflected in the significantly higher percentage growth inhibition when compared with cholesteryl mannan coated liposomes. The engineered systems thus have the potential use for the delivery of anti-microbial agents to the bio-films.
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Affiliation(s)
- S P Vyas
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr. Hari Singh Gour University, Sagar (MP) 470003, India.
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Boonyarattanakalin S, Hu J, Dykstra-Rummel SA, August A, Peterson BR. Endocytic delivery of vancomycin mediated by a synthetic cell surface receptor: rescue of bacterially infected Mammalian cells and tissue targeting in vivo. J Am Chem Soc 2007; 129:268-9. [PMID: 17212394 PMCID: PMC2536652 DOI: 10.1021/ja067674f] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Extracellular domains of internalizing cell surface receptors are often targeted to enable drug delivery through the mechanism of receptor-mediated endocytosis. To circumvent natural receptors required for endocytic drug delivery, we constructed a small artificial cell surface receptor comprising the membrane anchor N -alkyl-3β-cholesterylamine linked to a D-Phe-D-Ala motif that binds the glycopeptide antibiotic vancomycin. By mimicking membrane association and trafficking properties of cholesterol, this cholesterol-derived synthetic receptor functions as a prosthetic molecule, inserting into plasma membranes of mammalian cells, and rapidly cycling between the cell surface and intracellular endosomes. Human HeLa cells treated with this receptor gained the ability to internalize vancomycin by endocytosis, enabling this cell-impermeable antibiotic to eradicate the lethal intracellular pathogen Listeria monocytogenes , and preserving the viability of the host cells in vitro . Moreover, when combined with the synthetic receptor, vancomycin penetrated the blood brain barrier, accumulating in the brain and other tissues of mice in vivo . Because of their ability to define new pathways across biological membrane barriers, small synthetic cell surface receptors represent promising tools for drug delivery.
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Affiliation(s)
| | - Jianfang Hu
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802
| | | | - Avery August
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802
| | - Blake R. Peterson
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802
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Meng J, Hu B, Liu J, Hou Z, Meng J, Jia M, Luo X. Restoration of oxacillin susceptibility in methicillin-resistant Staphylococcus aureus by blocking the MecR1-mediated signaling pathway. J Chemother 2006; 18:360-5. [PMID: 17024790 DOI: 10.1179/joc.2006.18.4.360] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The signal transducing integral membrane protein, MecR1 helps initiate the expression of the antibiotic-resistant gene mecA, which encodes the penicillin-binding protein 2a. MecA participates in the beta-lactam resistance of methicillin-resistant Staphylococcus aureus (MRSA). Blocking the MecR1 regulatory pathway may be a novel strategy to combat MRSA. In this study, we introduced an antisense phosphothioate oligodeoxynucleotide (PS-ODN) targeting MecR1 mRNA into the MRSA strain WHO-2, which led to a significant reduction of both MecR1 and PBP2a mRNAs in a concentration-dependent manner. Consequently, the susceptibility of S. aureus WHO-2 to the beta-lactam antibiotic oxacillin was restored significantly. Our results indicate that blocking the mecR1-mecI-mecA signaling pathway via an antisense approach might be a viable strategy to restore the susceptibility of MRSA to the existing beta-lactam antibiotics.
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Affiliation(s)
- Jingru Meng
- Department of Pharmacology, The Fourth Military Medical University, 17 Changle West Rd., Xi'an 710032, PR China
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Santos HMLR, de Queiroz FB, Maior RMS, do Nascimento SC, Magalhães NSS. Cytotoxicity of doxorubicin-loaded Con A-liposomes. Drug Dev Res 2006. [DOI: 10.1002/ddr.20091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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