51
|
PAMAM dendrimer - cell membrane interactions. Adv Colloid Interface Sci 2018; 257:1-18. [PMID: 30008347 DOI: 10.1016/j.cis.2018.06.005] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 12/16/2022]
Abstract
PAMAM dendrimers have been conjectured for a wide range of biomedical applications due to their tuneable physicochemical properties. However, their application has been hindered by uncertainties in their cytotoxicity, which is influenced by dendrimer generation (i.e. size and surface group density), surface chemistry, and dosage, as well as cell specificity. In this review, biomedical applications of polyamidoamine (PAMAM) dendrimers and some related cytotoxicity studies are first outlined. Alongside these in vitro experiments, lipid membranes such as supported lipid bilayers (SLBs), liposomes, and Langmuir monolayers have been used as cell membrane models to study PAMAM dendrimer-membrane interactions. Related experimental and theoretical studies are summarized, and the physical insights from these studies are discussed to shed light on the fundamental understanding of PAMAM dendrimer-cell membrane interactions. We conclude with a summary of some questions that call for further investigations.
Collapse
|
52
|
Baranwal A, Srivastava A, Kumar P, Bajpai VK, Maurya PK, Chandra P. Prospects of Nanostructure Materials and Their Composites as Antimicrobial Agents. Front Microbiol 2018; 9:422. [PMID: 29593676 PMCID: PMC5855923 DOI: 10.3389/fmicb.2018.00422] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 02/22/2018] [Indexed: 11/13/2022] Open
Abstract
Nanostructured materials (NSMs) have increasingly been used as a substitute for antibiotics and additives in various products to impart microbicidal effect. In particular, use of silver nanoparticles (AgNPs) has garnered huge researchers' attention as potent bactericidal agent due to the inherent antimicrobial property of the silver metal. Moreover, other nanomaterials (carbon nanotubes, fullerenes, graphene, chitosan, etc.) have also been studied for their antimicrobial effects in order ensure their application in widespread domains. The present review exclusively emphasizes on materials that possess antimicrobial activity in nanoscale range and describes their various modes of antimicrobial action. It also entails broad classification of NSMs along with their application in various fields. For instance, use of AgNPs in consumer products, gold nanoparticles (AuNPs) in drug delivery. Likewise, use of zinc oxide nanoparticles (ZnO-NPs) and titanium dioxide nanoparticles (TiO2-NPs) as additives in consumer merchandises and nanoscale chitosan (NCH) in medical products and wastewater treatment. Furthermore, this review briefly discusses the current scenario of antimicrobial nanostructured materials (aNSMs), limitations of current research and their future prospects. To put various perceptive insights on the recent advancements of such antimicrobials, an extended table is incorporated, which describes effect of NSMs of different dimensions on test microorganisms along with their potential widespread applications.
Collapse
Affiliation(s)
- Anupriya Baranwal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Ananya Srivastava
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Pradeep Kumar
- Department of Forestry, North Eastern Regional Institute of Science and Technology, Deemed University, Nirjuli, India
| | - Vivek K Bajpai
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul, South Korea
| | - Pawan K Maurya
- Interdisciplinary Laboratory of Clinical Neuroscience (LiNC), Department of Psychiatry, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brazil
| | - Pranjal Chandra
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| |
Collapse
|
53
|
Synthesis and Characterization of a New PAMAM Metallodendrimer for Antimicrobial Modification of Cotton Fabric. Macromol Res 2018. [DOI: 10.1007/s13233-018-6043-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
54
|
Yang L, Wang X, Suchyta DJ, Schoenfisch MH. Antibacterial Activity of Nitric Oxide-Releasing Hyperbranched Polyamidoamines. Bioconjug Chem 2018; 29:35-43. [PMID: 29243926 PMCID: PMC6773256 DOI: 10.1021/acs.bioconjchem.7b00537] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Hyperbranched polyamidoamines (h-PAMAM) were prepared using a one-pot reaction to have similar molecular weight to third generation PAMAM (G3-PAMAM) dendrimers, and then functionalized with N-diazeniumdiolate nitric oxide (NO) donors. A wide range of NO storage capacities (∼1-2.50 μmol mg-1) and NO-release kinetics (t1/2 ∼30-80 min) were achieved by changing the extent of propylene oxide (PO) modification. The therapeutic potential of these materials was evaluated by studying their antibacterial activities and toxicity against common dental pathogens and human gingival fibroblast cells, respectively. Our results indicate that the combination of NO release and PO modification is necessary to yield h-PAMAM materials with efficient bactericidal action without eliciting unwarranted cytotoxicity. Of importance, NO-releasing PO-modified h-PAMAM polymers exhibited comparable biological properties (i.e., antibacterial action and cytotoxicity) to defect-free G3-PAMAM dendrimers, but at a substantially lower synthetic burden.
Collapse
Affiliation(s)
- Lei Yang
- Department of Chemistry, University of North Carolina – Chapel Hill, Chapel Hill, NC 27599
| | - Xingzhi Wang
- Department of Chemistry, University of North Carolina – Chapel Hill, Chapel Hill, NC 27599
| | - Dakota J. Suchyta
- Department of Chemistry, University of North Carolina – Chapel Hill, Chapel Hill, NC 27599
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina – Chapel Hill, Chapel Hill, NC 27599
| |
Collapse
|
55
|
Barman SR, Nain A, Jain S, Punjabi N, Mukherji S, Satija J. Dendrimer as a multifunctional capping agent for metal nanoparticles for use in bioimaging, drug delivery and sensor applications. J Mater Chem B 2018; 6:2368-2384. [DOI: 10.1039/c7tb03344c] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Various strategies (single & multi-pot) to synthesize dendrimer-coated metal nanoparticles and their exploration in various biomedical applications.
Collapse
Affiliation(s)
| | - Amit Nain
- School of Biosciences and Technology
- VIT Vellore
- India
| | - Saumey Jain
- School of Biosciences and Technology
- VIT Vellore
- India
| | - Nirmal Punjabi
- Department of Biosciences and Bioengineering
- IIT Bombay
- Mumbai 400076
- India
| | - Soumyo Mukherji
- Department of Biosciences and Bioengineering
- IIT Bombay
- Mumbai 400076
- India
| | | |
Collapse
|
56
|
Wang L, Zhang J, Guo X, Chen S, Cui Y, Yu Q, Yang L, Sun H, Gao D, Xie D. Highly stable and biocompatible zwitterionic dendrimer-encapsulated palladium nanoparticles that maintain their catalytic activity in bacterial solution. NEW J CHEM 2018. [DOI: 10.1039/c8nj04263b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This study offers a method for constructing an artificial enzyme (Pdn-G5MC), which maintains its catalytic efficiency in bacterial solution.
Collapse
|
57
|
Singh A, Abd AJ, Al-Mashahedah A, Kanwar JR. Corneal Haze, Refractive Surgery, and Implications for Choroidal Neovascularization. DRUG DELIVERY FOR THE RETINA AND POSTERIOR SEGMENT DISEASE 2018:439-477. [DOI: 10.1007/978-3-319-95807-1_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
58
|
Rastegar A, Nazari S, Allahabadi A, Falanji F, Akbari Dourbash FAD, Rezai Z, Alizadeh Matboo S, Hekmat-Shoar R, Mohseni SM, Majidi G. Antibacterial activity of amino- and amido- terminated poly (amidoamine)-G6 dendrimer on isolated bacteria from clinical specimens and standard strains. Med J Islam Repub Iran 2017; 31:64. [PMID: 29445693 PMCID: PMC5804433 DOI: 10.14196/mjiri.31.64] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Indexed: 12/24/2022] Open
Abstract
Background: Nanoscale poly (amidoamine) dendrimers have been investigated for their biological demands, but their antibacterial activity has not been widely discovered. Thus, the sixth generation of poly (amidoamine) dendrimer (PAMAM-G6) was synthesized and its antibacterial activities were evaluated on Gram-negative bacteria; P. aeruginosa, E. coli, A. baumannii, S. typhimurium, S. dysenteriae, K. pneumoniae, P. mirabilis, and Gram-positive bacteria, and S.aureus and B. subtilis, which were isolated from different clinical specimens and standard strains of these bacteria. Methods: In this study, 980 specimens including urine (47%), blood (27%), sputum (13%), wounds (8%), and burns (5%) were collected from clinical specimens of 16 hospitals and clinics in city of Sabzevar, Iran. Then, the target bacteria were isolated and identified using standard methods. Minimum inhibitory concentration and minimum bactericidal concentrations against Gram-positive and Gram-negative bacteria were determined according to guidelines described by clinical and laboratory standards institute (CLSI). Standard discs were prepared using 0.025, 0.25, 2.5, and 25 μg/mL concentrations of PAMAM-G6 on Mueller-Hinton agar plates to determinate the zone of inhibition. The cytotoxicity of PAMAM-G6 dendrimer was evaluated in HCT116 cells by MTT assay. Results: The most important isolated bacteria were E. coli (23.65%), S. aureus (24.7%), P. aeruginosa (10.49%), B. subtilis (7.7%), S. typhimurium (8.87%), A. baumannii (7.02%), K. pneumoniae (7.1%), P. mirabilis (6.46%), and S. dysenteriae (3.6%). Moreover, it was found that poly (amidoamine)-G6 exhibited more antibacterial efficacy on standard strains than isolated bacteria from clinical samples (p<0.05). The cytotoxicity of PAMAM-G6 to the cells showed that cytotoxicity depended on the concentration level and exposure time. Conclusion: The PAMAM-G6 dendrimer showed a positive impact on the removal of dominant bacterial isolated from clinical specimens and standard strains.
Collapse
Affiliation(s)
- Ayoob Rastegar
- Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
- Student Research committee, Faculty of Public Health Branch, Iran University of Medical Sciences, Tehran, Iran
| | - Shahram Nazari
- Student Research committee, Faculty of Public Health Branch, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Allahabadi
- Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Farahnaz Falanji
- Cellular and Molecular Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | | | - Zahra Rezai
- Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | | | - Reza Hekmat-Shoar
- Department of Occupational Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Seyed Mohsen Mohseni
- Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Gharib Majidi
- Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
| |
Collapse
|
59
|
Akbari Dourbash F, Alizadeh P, Nazari S, Farasat A. A highly bioactive poly (amido amine)/70S30C bioactive glass hybrid with photoluminescent and antimicrobial properties for bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:1135-1146. [DOI: 10.1016/j.msec.2017.04.142] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/20/2017] [Accepted: 04/22/2017] [Indexed: 12/11/2022]
|
60
|
Wilde M, Green RJ, Sanders MR, Greco F. Biophysical studies in polymer therapeutics: the interactions of anionic and cationic PAMAM dendrimers with lipid monolayers. J Drug Target 2017; 25:910-918. [DOI: 10.1080/1061186x.2017.1365877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Marleen Wilde
- School of Pharmacy, University of Reading, Reading, UK
| | | | | | | |
Collapse
|
61
|
Gholami M, Mohammadi R, Arzanlou M, Akbari Dourbash F, Kouhsari E, Majidi G, Mohseni SM, Nazari S. In vitro antibacterial activity of poly (amidoamine)-G7 dendrimer. BMC Infect Dis 2017; 17:395. [PMID: 28583153 PMCID: PMC5460590 DOI: 10.1186/s12879-017-2513-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/01/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Nano-scale dendrimers are synthetic macromolecules that frequently used in medical and health field. Traditional anibiotics are induce bacterial resistence so there is an urgent need for novel antibacterial drug invention. In the present study seventh generation poly (amidoamine) (PAMAM-G7) dendrimer was synthesized and its antibacterial activities were evaluated against representative Gram- negative and Gram-positive bacteria. METHODS PAMAM-G7 was synthesized with divergent growth method. The structural and surface of PAMAM-G7 were investigated by transmission electron microscopy, scanning electron microscope and fourier transform infrared. Pseudomonas. aeruginosa (n = 15), E. coli (n = 15), Acinetobacter baumanni (n = 15), Shigella dysenteriae (n = 15), Klebsiella pneumoniae (n = 10), Proteus mirabilis (n = 15), Staphylococcus aureus (n = 15) and Bacillus subtilis (n = 10) have been used for antibacterial activity assay. Additionally, representative standard strains for each bacterium were included. Minimum Inhibitory Concentration (MIC) was determined using microdilution method. Subsequently, Minimum Bactericidal Concentration (MBC) was determined by sub-culturing each of the no growth wells onto Mueller Hinton agar medium. The cytotoxicity of PAMAM-G7 dendrimer were evaluated in HCT116 and NIH 3 T3 cells by MTT assay. RESULTS The average size of each particle was approximately 20 nm. PAMAM-G7 was potentially to inhibit both Gram positive and gram negative growth. The MIC50 and MIC90 values were determined to be 2-4 μg/ml and 4-8 μg/ml, respectively. The MBC50 and MBC90 values were found to be 64-256 μg/ml and 128-256 μg/ml, respectively. The cytotoxity effect of dendrimer on HCT116 and NIH 3 T3 cells is dependent upon exposure time to and concentration of dendrimers. The most reduction (44.63 and 43%) in cell viability for HCT116 and NIH 3 T3 cells was observed at the highest concentration, 0.85 μM after 72 h treatmentm, respectively. CONCLUSIONS This study we conclude that PAMAM-G7 dendrimer could be a potential candidate as a novel antibacterial agent.
Collapse
Affiliation(s)
- Mitra Gholami
- Department of Environmental Health Engineering, School of public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Rashin Mohammadi
- Department of Life Science Engineering, Faculty of New Science and Technology, University of Tehran, Tehran, Iran
| | - Mohsen Arzanlou
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | | | - Ebrahim Kouhsari
- Department of Microbiology, School of Medical, Iran University of Medical Sciences, Tehran, Iran
| | - Gharib Majidi
- Department of Environmental Health Engineering, School of public Health, Qom University of Medical Sciences, Qom, Iran
| | - Seyed Mohsen Mohseni
- Department of Environmental Health Engineering, School of public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahram Nazari
- Department of Environmental Health Engineering, Developmental Center for Student Research and Technology Talent, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
62
|
Design and Synthesis of Dendrimers with Facile Surface Group Functionalization, and an Evaluation of Their Bactericidal Efficacy. Molecules 2017; 22:molecules22060868. [PMID: 28538670 PMCID: PMC6152728 DOI: 10.3390/molecules22060868] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 05/18/2017] [Accepted: 05/18/2017] [Indexed: 01/22/2023] Open
Abstract
We report a versatile divergent methodology to construct dendrimers from a tetrafunctional core, utilizing the robust copper(I) catalyzed alkyne-azide cycloaddition (CuAAC, “click”) reaction for both dendrimer synthesis and post-synthesis functionalization. Dendrimers of generations 1–3 with 8–32 protected or free OH and acetylene surface groups, were synthesized using building blocks that included acetylene- or azide-terminated molecules with carboxylic acid or diol end groups, respectively. The acetylene surface groups were subsequently used to covalently link cationic amino groups. A preliminary evaluation indicated that the generation one dendrimer with terminal NH3+ groups was the most effective bactericide, and it was more potent than several previously studied dendrimers. Our results suggest that size, functional end groups and hydrophilicity are important parameters to consider in designing efficient antimicrobial dendrimers.
Collapse
|
63
|
Kalachyova Y, Olshtrem A, Guselnikova OA, Postnikov PS, Elashnikov R, Ulbrich P, Rimpelova S, Švorčík V, Lyutakov O. Synthesis, Characterization, and Antimicrobial Activity of Near-IR Photoactive Functionalized Gold Multibranched Nanoparticles. ChemistryOpen 2017; 6:254-260. [PMID: 28413761 PMCID: PMC5390809 DOI: 10.1002/open.201600159] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 12/28/2016] [Indexed: 01/17/2023] Open
Abstract
Surface-modified gold multibranched nanoparticles (AuMs) were prepared by simple chemical reduction of gold chloride aqueous solution followed by in situ modification by using water-soluble arenediazonium tosylates with different functional organic groups. Chemical and morphological structures of the prepared nanoparticles were examined by using transmission electron and scanning electron microscopies. The covalent grafting of organic compounds was confirmed by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX) and Raman spectroscopy techniques. Covalent functionalization of nanoparticles significantly expands the range of their potential uses under physiological conditions, compared with traditional non-covalent or thiol-based approaches. The antibacterial effect of the surface-modified AuMs was evaluated by using Escherichia coli and Staphylococcus epidermidis bacteria under IR light illumination and without external triggering. Strong plasmon resonance on the AuMs cups leads to significant reduction of the light power needed kill bacteria under the mild conditions of continuous illumination. The effect of the surface-modified AuMs on the light-induced antibacterial activities was founded to be dependent on the grafted organic functional groups.
Collapse
Affiliation(s)
- Yevgeniya Kalachyova
- Department of Solid State EngineeringUniversity of Chemistry and TechnologyPrague166 28Czech Republic
- Department of Technology of Organic Substances and Polymer MaterialsTomsk Polytechnic University634050TomskRussia
| | - Anasiya Olshtrem
- Department of Bioengineering and Organic SynthesisTomsk Polytechnic University634050TomskRussia
| | - Olga A. Guselnikova
- Department of Solid State EngineeringUniversity of Chemistry and TechnologyPrague166 28Czech Republic
- Department of Technology of Organic Substances and Polymer MaterialsTomsk Polytechnic University634050TomskRussia
| | - Pavel S. Postnikov
- Department of Technology of Organic Substances and Polymer MaterialsTomsk Polytechnic University634050TomskRussia
| | - Roman Elashnikov
- Department of Solid State EngineeringUniversity of Chemistry and TechnologyPrague166 28Czech Republic
| | - Pavel Ulbrich
- Department of Biochemistry and MicrobiologyInstitute of Chemical Technology166 28PragueCzech Republic
| | - Silvie Rimpelova
- Department of Biochemistry and MicrobiologyInstitute of Chemical Technology166 28PragueCzech Republic
| | - Václav Švorčík
- Department of Solid State EngineeringUniversity of Chemistry and TechnologyPrague166 28Czech Republic
| | - Oleksiy Lyutakov
- Department of Solid State EngineeringUniversity of Chemistry and TechnologyPrague166 28Czech Republic
- Department of Technology of Organic Substances and Polymer MaterialsTomsk Polytechnic University634050TomskRussia
| |
Collapse
|
64
|
Abd-El-Aziz AS, Agatemor C, Etkin N, Bissessur R, Overy D, Lanteigne M, McQuillan K, Kerr RG. Quaternized and Thiazole-Functionalized Free Radical-Generating Organometallic Dendrimers as Antimicrobial Platform against Multidrug-Resistant Microorganisms. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201700020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/25/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Alaa S. Abd-El-Aziz
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - Christian Agatemor
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - Nola Etkin
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - Rabin Bissessur
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - David Overy
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
- Department of Pathology and Microbiology; Atlantic Veterinary College; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - Martin Lanteigne
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - Katherine McQuillan
- Department of Chemistry; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| | - Russell G. Kerr
- Nautilus Biosciences Canada Inc.; Duffy Research Center; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
- Department of Biomedical Sciences; Atlantic Veterinary College; University of Prince Edward Island; 550 University Avenue Charlottetown Prince Edward Island C1A 4P3 Canada
| |
Collapse
|
65
|
Pu Y, Hou Z, Khin MM, Zamudio-Vázquez R, Poon KL, Duan H, Chan-Park MB. Synthesis and Antibacterial Study of Sulfobetaine/Quaternary Ammonium-Modified Star-Shaped Poly[2-(dimethylamino)ethyl methacrylate]-Based Copolymers with an Inorganic Core. Biomacromolecules 2016; 18:44-55. [DOI: 10.1021/acs.biomac.6b01279] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yuji Pu
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| | - Zheng Hou
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| | - Mya Mya Khin
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| | - Rubi Zamudio-Vázquez
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| | - Kar Lai Poon
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| | - Hongwei Duan
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| | - Mary B. Chan-Park
- †School of Chemical and Biomedical Engineering, ‡Centre for Antimicrobial Bioengineering, §Lee Kong Chian School of Medicine, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, 138673, Singapore
| |
Collapse
|
66
|
Kim HR, Jang JW, Park JW. Carboxymethyl chitosan-modified magnetic-cored dendrimer as an amphoteric adsorbent. JOURNAL OF HAZARDOUS MATERIALS 2016; 317:608-616. [PMID: 27351905 DOI: 10.1016/j.jhazmat.2016.06.025] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 05/14/2016] [Accepted: 06/11/2016] [Indexed: 06/06/2023]
Abstract
Carboxymethyl chitosan-modified magnetic-cored dendrimers (CCMDs) were successfully synthesized in a three step method. The synthesized samples were characterized using X-ray diffraction, transmission electron microscopy, scanning electron microscopy, vibrating sample magnetometer, thermogravimetry analysis, zeta potential analyzer, X-ray photoelectron spectroscopy, surface area analysis, and Fourier transform infrared spectroscopy. The CCMD exhibited selective adsorption for anionic and cationic compounds at specific pH conditions. With the substitution of amino groups of MD with carboxymethyl chitosan moieties, the adsorption sites for cationic compounds were greatly increased. Since the adsorption onto CCMD was mainly electrostatic interaction, the adsorption of MB and MO was significantly affected by the pHs. The optimal adsorption pH values were 3 and 11 for MO and MB. The maximal adsorption of MO and MB on the CCMD at pH values of 3 and 11 were 20.85mgg(-1) and 96.31mgg(-1), respectively. Reuse of the CCMD as an adsorbent was experimentally tested through adsorption and desorption with simple pH control. More than 99% and 91% of the initial adsorption of MB and MO on the CCMD was maintained with five consecutive recycling.
Collapse
Affiliation(s)
- Hye-Ran Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, South Korea
| | - Jun-Won Jang
- Pohang Institute of Metal Industry Advancement, 56 Jigok-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 790-834, South Korea
| | - Jae-Woo Park
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, South Korea.
| |
Collapse
|
67
|
Ngu-Schwemlein M, Chin SF, Hileman R, Drozdowski C, Upchurch C, Hargrove A. Carbon nanodots as molecular scaffolds for development of antimicrobial agents. Bioorg Med Chem Lett 2016; 26:1745-9. [PMID: 26923697 PMCID: PMC4785080 DOI: 10.1016/j.bmcl.2016.02.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/16/2016] [Accepted: 02/17/2016] [Indexed: 11/29/2022]
Abstract
We report the potential of carbon nanodots (CNDs) as a molecular scaffold for enhancing the antimicrobial activities of small dendritic poly(amidoamines) (PAMAM). Carbon nanodots prepared from sago starch are readily functionalized with PAMAM by using N-ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Electron microscopy images of these polyaminated CNDs show that they are approximately 30-60nm in diameter. Infrared and fluorescence spectroscopy analyses of the water-soluble material established the presence of the polyamidoaminated moiety and the intrinsic fluorescence of the nanodots. The polyaminated nanodots (CND-PAM1 and CND-PAM2) exhibit in vitro antimicrobial properties, not only to non-multidrug resistant bacteria but also to the corresponding Gram-negative multidrug bacteria. Their minimum inhibitory concentration (MIC) ranges from 8 to 64μg/mL, which is much lower than that of PAMAM G1 or the non-active PAMAM G0 and CNDs. Additionally, they show synergistic effect in combination with tetracycline or colistin. These preliminary results imply that CNDs can serve as a promising scaffold for facilitating the rational design of antimicrobial materials for combating the ever-increasing threat of antibiotic resistance. Moreover, their fluorescence could be pertinent to unraveling their mode of action for imaging or diagnostic applications.
Collapse
Affiliation(s)
- Maria Ngu-Schwemlein
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA.
| | - Suk Fun Chin
- Department of Chemistry, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Ryan Hileman
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA
| | - Chris Drozdowski
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA
| | - Clint Upchurch
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA
| | - April Hargrove
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA
| |
Collapse
|
68
|
Akhtar S, El-Hashim AZ, Chandrasekhar B, Attur S, Benter IF. Naked Polyamidoamine Polymers Intrinsically Inhibit Angiotensin II-Mediated EGFR and ErbB2 Transactivation in a Dendrimer Generation- and Surface Chemistry-Dependent Manner. Mol Pharm 2016; 13:1575-86. [DOI: 10.1021/acs.molpharmaceut.6b00045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
| | | | | | | | - Ibrahim F. Benter
- Faculty
of Medicine, Eastern Mediterranean University, Famagusta, North Cyprus
| |
Collapse
|
69
|
Akhtar S, Al-Zaid B, El-Hashim AZ, Chandrasekhar B, Attur S, Benter IF. Impact of PAMAM delivery systems on signal transduction pathways in vivo: Modulation of ERK1/2 and p38 MAP kinase signaling in the normal and diabetic kidney. Int J Pharm 2016; 514:353-363. [PMID: 27032566 DOI: 10.1016/j.ijpharm.2016.03.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/20/2016] [Accepted: 03/22/2016] [Indexed: 11/16/2022]
Abstract
The in vivo impact of two generation 6 cationic polyamidoamine (PAMAM) dendrimers on cellular signaling via extracellular-regulated kinase 1/2 (ERK1/2) and p38 mitogen-activated protein kinase (p38 MAPK), as well as their relationship to epidermal growth factor receptor (EGFR), were studied in the normal and/or diabetic rat kidney. A single 10mg/kg/i.p administration of Polyfect (PF; with an intact branching architecture) or Superfect (SF; with a fragmented branching architecture) modulated renal ERK1/2 and p38 MAPK phosphorylation in a dendrimer-specific and animal model-dependent manner. AG1478 treatment (a selective EGFR inhibitor) confirmed that renal ERK1/2 and p38 MAPK signaling was downstream of EGFR. Surprisingly, both PAMAMs induced hyperphosphorylation of ERK1/2 and p38 MAPK (at 1 or 5mg/kg) despite inhibiting EGFR phosphorylation in the diabetic kidney. PAMAMs did not alter renal morphology but their effects on p38 MAPK and EGFR phosphorylation were reversed by ex vivo treatment of kidneys with the anti-oxidant, Tempol. Thus, PAMAMs can intrinsically modulate signaling of mitogen-activated protein kinases (MAPKs) depending on the type of dendrimer (fragmented vs intact branching architecture) and animal model (normal vs diabetic) used and likely occurs via an EGFR-independent and oxidative-stress dependent mechanism. These findings might have important toxicological implications for PAMAM-based delivery systems.
Collapse
Affiliation(s)
- Saghir Akhtar
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait.
| | - Bashayer Al-Zaid
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait
| | - Ahmed Z El-Hashim
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Kuwait University, Safat 13110, Kuwait
| | - Bindu Chandrasekhar
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait
| | - Sreeja Attur
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait
| | - Ibrahim F Benter
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait
| |
Collapse
|
70
|
Andreozzi E, Barbieri F, Ottaviani MF, Giorgi L, Bruscolini F, Manti A, Battistelli M, Sabatini L, Pianetti A. Dendrimers and Polyamino-Phenolic Ligands: Activity of New Molecules Against Legionella pneumophila Biofilms. Front Microbiol 2016; 7:289. [PMID: 27014213 PMCID: PMC4783402 DOI: 10.3389/fmicb.2016.00289] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 02/23/2016] [Indexed: 12/01/2022] Open
Abstract
Legionnaires’ disease is a potentially fatal pneumonia caused by Legionella pneumophila, an aquatic bacterium often found within the biofilm niche. In man-made water systems microbial biofilms increase the resistance of legionella to disinfection, posing a significant threat to public health. Disinfection methods currently used in water systems have been shown to be ineffective against legionella over the long-term, allowing recolonization by the biofilm-protected microorganisms. In this study, the anti-biofilm activity of previously fabricated polyamino-phenolic ligands and polyamidoamine dendrimers was investigated against legionella mono-species and multi-species biofilms formed by L. pneumophila in association with other bacteria that can be found in tap water (Aeromonas hydrophila, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae). Bacterial ability to form biofilms was verified using a crystal violet colorimetric assay and testing cell viability by real-time quantitative PCR and Plate Count assay. The concentration of the chemicals tested as anti-biofilm agents was chosen based on cytotoxicity assays: the highest non-cytotoxic chemical concentration was used for biofilm inhibition assays, with dendrimer concentration 10-fold higher than polyamino-phenolic ligands. While Macrophen and Double Macrophen were the most active substances among polyamino-phenolic ligands, dendrimers were overall twofold more effective than all other compounds with a reduction up to 85 and 73% of legionella and multi-species biofilms, respectively. Chemical interaction with matrix molecules is hypothesized, based on SEM images and considering the low or absent anti-microbial activity on planktonic bacteria showed by flow cytometry. These data suggest that the studied compounds, especially dendrimers, could be considered as novel molecules in the design of research projects aimed at the development of efficacious anti-biofilm disinfection treatments of water systems in order to minimize legionellosis outbreaks.
Collapse
Affiliation(s)
- Elisa Andreozzi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Federica Barbieri
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Maria F Ottaviani
- Department of Pure and Applied Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Luca Giorgi
- Department of Pure and Applied Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Francesca Bruscolini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Anita Manti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Michela Battistelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Luigia Sabatini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| | - Anna Pianetti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Urbino, Italy
| |
Collapse
|
71
|
Ong ZY, Coady DJ, Tan JPK, Li Y, Chan JMW, Yang YY, Hedrick JL. Design and synthesis of biodegradable grafted cationic polycarbonates as broad spectrum antimicrobial agents. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27987] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Zhan Yuin Ong
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Daniel J. Coady
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
| | - Jeremy P. K. Tan
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Yan Li
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Julian M. W. Chan
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - James L. Hedrick
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
| |
Collapse
|
72
|
Ahmadi Jebelli M, Kalantar E, Maleki A, Izanloo H, Gharibi F, Daraei H, Hayati B, Ghasemi E, Azari A. Antimicrobial Activities of the Polypropylene Imine Dendrimer Aginst Bacteria Isolated From Rural Water Resources. Jundishapur J Nat Pharm Prod 2015. [DOI: 10.17795/jjnpp-20621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
73
|
Sadeghi-Kiakhani M, Gharanjig K, Arami M. Grafting of prepared chitosan–poly(propylene) imines dendrimer hybrid as a biopolymer onto cotton and its antimicrobial property. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
74
|
Nanomedicine approaches for corneal diseases. J Funct Biomater 2015; 6:277-98. [PMID: 25941990 PMCID: PMC4493512 DOI: 10.3390/jfb6020277] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/28/2015] [Accepted: 04/28/2015] [Indexed: 02/04/2023] Open
Abstract
Corneal diseases are the third leading cause of blindness globally. Topical nonsteroidal anti-inflammatory drugs (NSAIDs), steroids, antibiotics and tissue transplantation are currently used to treat corneal pathological conditions. However, barrier properties of the ocular surface necessitate high concentration of the drugs applied in the eye repeatedly. This often results in poor efficacy and several side-effects. Nanoparticle-based molecular medicine seeks to overcome these limitations by enhancing the permeability and pharmacological properties of the drugs. The promise of nanomedicine approaches for treating corneal defects and restoring vision without side effects in preclinical animal studies has been demonstrated. Numerous polymeric, metallic and hybrid nanoparticles capable of transporting genes into desired corneal cells to intercept pathologic pathways and processes leading to blindness have been identified. This review provides an overview of corneal diseases, nanovector properties and their applications in drug-delivery and corneal disease management.
Collapse
|
75
|
Supramolecular cationic assemblies against multidrug-resistant microorganisms: activity and mechanism of action. Int J Mol Sci 2015; 16:6337-52. [PMID: 25809608 PMCID: PMC4394535 DOI: 10.3390/ijms16036337] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 03/12/2015] [Accepted: 03/16/2015] [Indexed: 11/30/2022] Open
Abstract
The growing challenge of antimicrobial resistance to antibiotics requires novel synthetic drugs or new formulations for old drugs. Here, cationic nanostructured particles (NPs) self-assembled from cationic bilayer fragments and polyelectrolytes are tested against four multidrug-resistant (MDR) strains of clinical importance. The non-hemolytic poly(diallyldimethylammonium) chloride (PDDA) polymer as the outer NP layer shows a remarkable activity against these organisms. The mechanism of cell death involves bacterial membrane lysis as determined from the leakage of inner phosphorylated compounds and possibly disassembly of the NP with the appearance of multilayered fibers made of the NP components and the biopolymers withdrawn from the cell wall. The NPs display broad-spectrum activity against MDR microorganisms, including Gram-negative and Gram-positive bacteria and yeast.
Collapse
|
76
|
A potent and selective antimicrobial poly(amidoamine) dendrimer conjugate with LED209 targeting QseC receptor to inhibit the virulence genes of gram negative bacteria. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:329-39. [DOI: 10.1016/j.nano.2014.09.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 08/11/2014] [Accepted: 09/29/2014] [Indexed: 11/18/2022]
|
77
|
Mohammadifar E, Nemati Kharat A, Adeli M. Polyamidoamine and polyglycerol; their linear, dendritic and linear–dendritic architectures as anticancer drug delivery systems. J Mater Chem B 2015; 3:3896-3921. [DOI: 10.1039/c4tb02133a] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review covers the latest advances in the conjugation of chemotherapeutics such as doxorubicin, paclitaxel, methotrexate, fluorouracil and cisplatin to dendritic polymers, including polyamidoamine dendrimers, hyperbranched polyglycerols and their linear analogues, with a focus on their cytotoxicity, biodistribution and biodegradability.
Collapse
Affiliation(s)
- Ehsan Mohammadifar
- School of Chemistry
- University College of Science
- University of Tehran
- Tehran
- Iran
| | - Ali Nemati Kharat
- School of Chemistry
- University College of Science
- University of Tehran
- Tehran
- Iran
| | - Mohsen Adeli
- Department of Chemistry
- Faculty of Science
- Lorestan University
- Khoramabad
- Iran
| |
Collapse
|
78
|
Zhao Y, Zhao J, Li R, Han M, Zhu C, Wang M, Guo Y, Wang X. A series of codendrimers from polyamidoamine (PAMAM) and oligoethylene glycols (OEG) dendrons as drug carriers: the effect of OEG dendron decoration degree. RSC Adv 2015. [DOI: 10.1039/c5ra12177a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
To evaluate the effect of OEG dendron decoration degree and find a suitable carrier, a series of codendrimers are prepared and utilized to transport methotrexate.
Collapse
Affiliation(s)
- Yanna Zhao
- Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- P. R. China
| | - Jing Zhao
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Ran Li
- Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- P. R. China
| | - Meihua Han
- Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- P. R. China
| | - Chunyan Zhu
- Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- P. R. China
| | - Mincan Wang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Yifei Guo
- Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- P. R. China
| | - Xiangtao Wang
- Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- P. R. China
| |
Collapse
|
79
|
Wong PT, Tang S, Tang K, Coulter A, Mukherjee J, Gam K, Baker JR, Choi SK. A lipopolysaccharide binding heteromultivalent dendrimer nanoplatform for Gram negative cell targeting. J Mater Chem B 2015; 3:1149-1156. [DOI: 10.1039/c4tb01690d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Heteromultivalent design of PAMAM dendrimer by conjugation with polymyxin B (PMB) ligand and excess auxiliary ethanolamine (EA) branches led to lipopolysaccharide (LPS) avidity two orders of magnitude greater than free PMB.
Collapse
Affiliation(s)
- Pamela T. Wong
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
- Department of Internal Medicine
| | - Shengzhuang Tang
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
- Department of Internal Medicine
| | - Kenny Tang
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
| | - Alexa Coulter
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
| | - Jhindan Mukherjee
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
- Department of Internal Medicine
| | - Kristina Gam
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
| | - James R. Baker
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
- Department of Internal Medicine
| | - Seok Ki Choi
- Michigan Nanotechnology Institute for Medicine and Biological Sciences
- University of Michigan
- Ann Arbor
- USA
- Department of Internal Medicine
| |
Collapse
|
80
|
Martinho N, Florindo H, Silva L, Brocchini S, Zloh M, Barata T. Molecular Modeling to Study Dendrimers for Biomedical Applications. Molecules 2014; 19:20424-20467. [PMID: 25493631 PMCID: PMC6270869 DOI: 10.3390/molecules191220424] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/12/2014] [Accepted: 11/17/2014] [Indexed: 02/06/2023] Open
Abstract
Molecular modeling techniques provide a powerful tool to study the properties of molecules and their interactions at the molecular level. The use of computational techniques to predict interaction patterns and molecular properties can inform the design of drug delivery systems and therapeutic agents. Dendrimers are hyperbranched macromolecular structures that comprise repetitive building blocks and have defined architecture and functionality. Their unique structural features can be exploited to design novel carriers for both therapeutic and diagnostic agents. Many studies have been performed to iteratively optimise the properties of dendrimers in solution as well as their interaction with drugs, nucleic acids, proteins and lipid membranes. Key features including dendrimer size and surface have been revealed that can be modified to increase their performance as drug carriers. Computational studies have supported experimental work by providing valuable insights about dendrimer structure and possible molecular interactions at the molecular level. The progress in computational simulation techniques and models provides a basis to improve our ability to better predict and understand the biological activities and interactions of dendrimers. This review will focus on the use of molecular modeling tools for the study and design of dendrimers, with particular emphasis on the efforts that have been made to improve the efficacy of this class of molecules in biomedical applications.
Collapse
Affiliation(s)
- Nuno Martinho
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, Lisbon 1649-003, Portugal
| | - Helena Florindo
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, Lisbon 1649-003, Portugal
| | - Liana Silva
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, Lisbon 1649-003, Portugal
| | - Steve Brocchini
- Department of Pharmaceutics, The School of Pharmacy, University of London, 29/39 Brunswick Square, London WC1N 1AX, UK
| | - Mire Zloh
- Department of Pharmacy, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK.
| | - Teresa Barata
- Department of Pharmaceutics, The School of Pharmacy, University of London, 29/39 Brunswick Square, London WC1N 1AX, UK.
| |
Collapse
|
81
|
Perreault F, Melegari SP, Fuzinatto CF, Bogdan N, Morin M, Popovic R, Matias WG. Toxicity of PAMAM-coated gold nanoparticles in different unicellular models. ENVIRONMENTAL TOXICOLOGY 2014; 29:328-336. [PMID: 22331655 DOI: 10.1002/tox.21761] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/19/2011] [Accepted: 12/26/2011] [Indexed: 05/31/2023]
Abstract
Polyamidoamine (PAMAM) dendrimers are used for many pharmaceutical and biomedical applications. However, the toxicological risks of several PAMAM-based compounds are still not fully evaluated, despite evidences of PAMAM deleterious effects on biological membranes, leading to toxicity. In this report, we investigated the toxicity of generation 0 PAMAM-coated gold nanoparticles (AuG0 NPs) in four different models to determine how different cellular systems are affected by PAMAM-coated NPs. Toxicity was evaluated in two mammalian cell lines, Neuro 2A and Vero, in the green alga Chlamydomonas reinhardtii and the bacteria Vibrio fischeri. AuG0 NP treatments reduced cell metabolic activity in algal and bacterial cells, measured by esterase enzymatic activity (C. reinhardtii) and luminescence emission (V. fischeri). EC50 value after 30 min of treatment was similar in both organisms, with 0.114 and 0.167 mg mL(-1) for C. reinhardtii and V. fischeri, respectively. On the other hand, AuG0 NPs induced no change of mitochondrial activity in mammalian cells after 24 h of treatment to up to 0.4 mg mL(-1) AuG0 NPs. Change in the absorption spectra of AuG0 NP in the mammalian cell culture media may indicate an alteration of NP properties that contributed to the low toxicity of AuG0 NPs in mammalian cells. For a safe development of PAMAM-based nanomaterials, the difference of sensitivity between mammalian and microbial cells, as well as the modulation of NPs toxicity by medium properties, should be taken into account when designing PAMAM NPs for applications that may lead to their introduction in the environment.
Collapse
Affiliation(s)
- François Perreault
- Laboratory of Environmental Toxicology, LABTOX, Department of Sanitary and Environment Engineering, Federal University of Santa Catarina, CEP 88040-970, Florianópolis, Santa Catarina, Brazil; Department of Chemistry, University of Quebec in Montreal, C.P. 8888, Succ. Centre-Ville, Montreal, Quebec, Canada, H3C 3P8
| | | | | | | | | | | | | |
Collapse
|
82
|
Lind TK, Zielińska P, Wacklin HP, Urbańczyk-Lipkowska Z, Cárdenas M. Continuous flow atomic force microscopy imaging reveals fluidity and time-dependent interactions of antimicrobial dendrimer with model lipid membranes. ACS NANO 2014; 8:396-408. [PMID: 24303991 DOI: 10.1021/nn404530z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, an amphiphilic peptide dendrimer with potential applications against multi-resistant bacteria such as Staphylococcus aureus was synthesized and studied on model cell membranes. The combination of quartz crystal microbalance and atomic force microscopy imaging during continuous flow allowed for in situ monitoring of the very initial interaction processes and membrane transformations on longer time scales. We used three different membrane compositions of low and high melting temperature phospholipids to vary the membrane properties from a single fluid phase to a pure gel phase, while crossing the phase coexistence boundaries at room temperature. The interaction mechanism of the dendrimer was found to be time-dependent and to vary remarkably with the fluidity and coexistence of liquid-solid phases in the membrane. Spherical micelle-like dendrimer-lipid aggregates were formed in the fluid-phase bilayer and led to partial solubilization of the membrane, while in gel-phase membranes, the dendrimers caused areas of local depressions followed by redeposition of flexible lipid patches. Domain coexistence led to a sequence of events initiated by the formation of a ribbon-like network and followed by membrane solubilization via spherical aggregates from the edges of bilayer patches. Our results show that the dendrimer molecules were able to destroy the membrane integrity through different mechanisms depending on the lipid phase and morphology and shed light on their antimicrobial activity. These findings could have an impact on the efficacy of the dendrimers since lipid membranes in certain bacteria have transition temperatures very close to the host body temperature.
Collapse
Affiliation(s)
- Tania Kjellerup Lind
- Nano-Science Center and Institute of Chemistry, Copenhagen University , København DK2100, Denmark
| | | | | | | | | |
Collapse
|
83
|
Costanza F, Padhee S, Wu H, Wang Y, Revenis J, Cao C, Li Q, Cai J. Investigation of antimicrobial PEG-poly(amino acid)s. RSC Adv 2014. [DOI: 10.1039/c3ra44324h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
84
|
Wrońska N, Felczak A, Zawadzka K, Janaszewska A, Klajnert B, Bryszewska M, Lisowska K. The antibacterial effect of the co-administration of poly(propylene imine) dendrimers and ciprofloxacin. NEW J CHEM 2014. [DOI: 10.1039/c3nj01338c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
85
|
Lu Y, Slomberg DL, Shah A, Schoenfisch MH. Nitric oxide-releasing amphiphilic poly(amidoamine) (PAMAM) dendrimers as antibacterial agents. Biomacromolecules 2013; 14:3589-98. [PMID: 23962307 DOI: 10.1021/bm400961r] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of amphiphilic nitric oxide (NO)-releasing poly(amidoamine) (PAMAM) dendrimers with different exterior functionalities were synthesized by a ring-opening reaction between primary amines on the dendrimer and propylene oxide (PO), 1,2-epoxy-9-decene (ED), or a ratio of the two, followed by reaction with NO at 10 atm to produce N-diazeniumdiolate-modified scaffolds with a total storage of ~1 μmol/mg. The hydrophobicity of the exterior functionality was tuned by varying the ratio of PO and ED grafted onto the dendrimers. The bactericidal efficacy of these NO-releasing vehicles against established Gram-negative Pseudomonas aeruginosa biofilms was then evaluated as a function of dendrimer exterior hydrophobicity (i.e., ratio of PO/ED), size (i.e., generation), and NO release. Both the size and exterior functionalization of dendrimer proved important to a number of parameters including dendrimer-bacteria association, NO delivery efficiency, bacteria membrane disruption, migration within the biofilm, and toxicity to mammalian cells. Although enhanced bactericidal efficacy was observed for the hydrophobic chains (e.g., ED), toxicity to L929 mouse fibroblast cells was also noted at concentrations necessary to reduce bacterial viability by 5-logs (99.999% killing). The optimal PO to ED ratios for biofilm eradication with minimal toxicity against L929 mouse fibroblast cells were 7:3 and 5:5. The study presented herein demonstrated the importance of both dendrimer size and exterior properties in determining efficacy against established biofilms without compromising biocompatibility to mammalian cells.
Collapse
Affiliation(s)
- Yuan Lu
- Department of Chemistry, University of North Carolina-Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | | | | | | |
Collapse
|
86
|
Zhang S, Qiu G, Ting YP, Chung TS. Silver–PEGylated dendrimer nanocomposite coating for anti-fouling thin film composite membranes for water treatment. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.06.027] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
87
|
Vanić Ž, Škalko-Basnet N. Nanopharmaceuticals for improved topical vaginal therapy: Can they deliver? Eur J Pharm Sci 2013; 50:29-41. [DOI: 10.1016/j.ejps.2013.04.035] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Revised: 04/16/2013] [Accepted: 04/26/2013] [Indexed: 11/29/2022]
|
88
|
Siedenbiedel F, Fuchs A, Moll T, Weide M, Breves R, Tiller JC. Star-Shaped Poly(styrene)-block
-Poly(4-vinyl-N
-methylpyridiniumiodide) for Semipermanent Antimicrobial Coatings. Macromol Biosci 2013; 13:1447-55. [DOI: 10.1002/mabi.201300219] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/25/2013] [Indexed: 01/11/2023]
Affiliation(s)
- Felix Siedenbiedel
- Department of Bio- and Chemical Engineering; TU Dortmund; Emil-Figge-Str. 66, D-44227 Dortmund Germany
| | - Andreas Fuchs
- Freiburg Materials Research Center and Institute for Macromolecular Chemistry; Albert-Ludwigs-Universitaet Freiburg; Stefan-Meier-Str. 21, D-79104 Freiburg Germany
| | - Thorsten Moll
- Department of Bio- and Chemical Engineering; TU Dortmund; Emil-Figge-Str. 66, D-44227 Dortmund Germany
| | - Mirko Weide
- Henkel AG & Co.; KGaA, Henkelstr. 67, D-40191 Duesseldorf Germany
| | - Roland Breves
- Henkel AG & Co.; KGaA, Henkelstr. 67, D-40191 Duesseldorf Germany
| | - Joerg C. Tiller
- Department of Bio- and Chemical Engineering; TU Dortmund; Emil-Figge-Str. 66, D-44227 Dortmund Germany
| |
Collapse
|
89
|
Winnicka K, Wroblewska M, Wieczorek P, Sacha PT, Tryniszewska EA. The effect of PAMAM dendrimers on the antibacterial activity of antibiotics with different water solubility. Molecules 2013; 18:8607-17. [PMID: 23881050 PMCID: PMC6269725 DOI: 10.3390/molecules18078607] [Citation(s) in RCA: 41] [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: 06/20/2013] [Revised: 07/12/2013] [Accepted: 07/16/2013] [Indexed: 11/17/2022] Open
Abstract
Erythromycin (EM) and tobramycin (TOB) are well-known and widely used antibiotics, belonging to different therapeutic groups: macrolide and aminoglycoside, respectively. Moreover, they possess different solubility: EM is slightly soluble and TOB is freely soluble in water. It was previously demonstrated that PAMAM dendrimers enhanced the pharmacological activity of antifungal drugs by increasing their solubility. Therefore, it appears interesting to investigate the effect of PAMAM-NH2 and PAMAM-OH dendrimers generation 2 (G2) and generation 3 (G3) on the antibacterial activity of antibiotics with different water solubility. In this study it was shown that the aqueous solubility of EM was significantly increased by PAMAM dendrimers (PAMAM-NH2 and PAMAM-OH caused about 8- and 7- fold solubility increases, respectively). However, it was indicated that despite the increase in the solubility, there was only slight influence on the antibacterial activity of EM (2- and 4-fold decreases in the MBC values of EM in the presence of PAMAM-OH G3 and PAMAM-NH2 G2 or G3 for strains of Staphylococcus aureus were noted, respectively). It was also found that there was no influence of PAMAM on the antibacterial activity of hydrophilic TOB.
Collapse
Affiliation(s)
- Katarzyna Winnicka
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical University of Białystok, Mickiewicza 2c, 15-222 Białystok, Poland; E-Mail:
| | - Magdalena Wroblewska
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical University of Białystok, Mickiewicza 2c, 15-222 Białystok, Poland; E-Mail:
| | - Piotr Wieczorek
- Department of Microbiological Diagnostics and Infectious Immunology, Faculty of Pharmacy, Medical University of Białystok, Kilińskiego 1, 15-089 Białystok, Poland; E-Mails: (P.W.); (P.T.S.); (E.A.T.)
| | - Pawel Tomasz Sacha
- Department of Microbiological Diagnostics and Infectious Immunology, Faculty of Pharmacy, Medical University of Białystok, Kilińskiego 1, 15-089 Białystok, Poland; E-Mails: (P.W.); (P.T.S.); (E.A.T.)
| | - Elzbieta Anna Tryniszewska
- Department of Microbiological Diagnostics and Infectious Immunology, Faculty of Pharmacy, Medical University of Białystok, Kilińskiego 1, 15-089 Białystok, Poland; E-Mails: (P.W.); (P.T.S.); (E.A.T.)
| |
Collapse
|
90
|
Sato K, Anzai JI. Dendrimers in layer-by-layer assemblies: synthesis and applications. Molecules 2013; 18:8440-60. [PMID: 23867653 PMCID: PMC6270364 DOI: 10.3390/molecules18078440] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 07/08/2013] [Accepted: 07/15/2013] [Indexed: 11/16/2022] Open
Abstract
We review the synthesis of dendrimer-containing layer-by-layer (LbL) assemblies and their applications, including biosensing, controlled drug release, and bio-imaging. Dendrimers can be built into LbL films and microcapsules by alternating deposition of dendrimers and counter polymers on the surface of flat substrates and colloidal microparticles through electrostatic bonding, hydrogen bonding, covalent bonding, and biological affinity. Dendrimer-containing LbL assemblies have been used to construct biosensors, in which electron transfer mediators and metal nanoparticles are often coupled with dendrimers. Enzymes have been successfully immobilized on the surface of electrochemical and optical transducers by forming enzyme/dendrimer LbL multilayers. In this way, high-performance enzyme sensors are fabricated. In addition, dendrimer LbL films and microcapsules are useful for constructing drug delivery systems because dendrimers bind drugs to form inclusion complexes or the dendrimer surface is covalently modified with drugs. Magnetic resonance imaging of cancer cells by iron oxide nanoparticles coated with dendrimer LbL film is also discussed.
Collapse
Affiliation(s)
| | - Jun-ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan; E-Mail:
| |
Collapse
|
91
|
Mignani S, Kazzouli SE, Bousmina M, Majoral JP. Dendrimer space concept for innovative nanomedicine: A futuristic vision for medicinal chemistry. Prog Polym Sci 2013. [DOI: 10.1016/j.progpolymsci.2013.03.003] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
92
|
Polcyn P, Zielinska P, Zimnicka M, Troć A, Kalicki P, Solecka J, Laskowska A, Urbanczyk-Lipkowska Z. Novel antimicrobial peptide dendrimers with amphiphilic surface and their interactions with phospholipids--insights from mass spectrometry. Molecules 2013; 18:7120-44. [PMID: 23778121 PMCID: PMC6270063 DOI: 10.3390/molecules18067120] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/04/2013] [Accepted: 06/06/2013] [Indexed: 11/24/2022] Open
Abstract
A series of new peptide dendrimers with amphiphilic surface, designed around a dendronized ornithine (Orn) core were synthesized and characterized by ESI-MS, 1H-, 13C- NMR, and CD spectrometry. An improved antimicrobial potency against S. aureus and E. coli was detected as a result of an increased charge, higher branching and variable lipophilicity of the residues located at the C-terminus. Minimal inhibitory concentration (MIC) values indicated that the selected dendrimers were not sensitive to the physiological concentration of Na+ and K+ ions (100 mM), but expressed reduced potency at 10 mM concentration of Mg2+ and Ca2+ ions. Circular dichroism (CD) curves measured under various conditions revealed structure and solvent-dependent curve evolution. ESI-MS studies of gas-phase interactions between selected dendrimers and both anionic (DMPG) and neutral (DMPC) phospholipids revealed the presence of variously charged dendrimer/phospholipid aggregates with 1:1 to 1:5 stoichiometry. The collision-induced fragmentation (CID) of the most abundant [dendrimer/phospholipid]2+ ions of the 1:1 stoichiometry demonstrated that the studied dendrimers formed stronger complexes with anionic DMPG. Both phospholipids have higher affinity towards dendrimers with a more compact structure. Higher differences in CID energy necessary for dissociation of 50% of the complex formed by dendrimers with DMPG vs. DMPC (∆CID50) correlate with a lower hemotoxicity. Mass spectrometry results suggest that for a particular group of compounds the ∆CID50 might be one of the important factors explaining selectivity of antimicrobial peptides and their branched analogs targeting the bacterial membrane. Both circular dichroism and mass spectrometry studies demonstrated that dendrimers of Nα- and Nε-series possess a different conformation in solution and different affinity to model phospholipids, what might influence their specific microbicidal mechanism.
Collapse
Affiliation(s)
- Piotr Polcyn
- Institute of Organic Chemistry PAS, Kasprzaka Str. 44/54, Warsaw 01-224, Poland
| | - Paulina Zielinska
- Institute of Organic Chemistry PAS, Kasprzaka Str. 44/54, Warsaw 01-224, Poland
| | - Magdalena Zimnicka
- Institute of Organic Chemistry PAS, Kasprzaka Str. 44/54, Warsaw 01-224, Poland
- Authors to whom correspondence should be addressed; E-Mails: (Z.U.-L.); (M.Z.); Tel.: +48-22-343-2207 (Z.U.-L.); +48-22-343-2221 (M.Z.); Fax: +48-22-632-6681 (Z.U.-L. & M.Z.)
| | - Anna Troć
- Institute of Organic Chemistry PAS, Kasprzaka Str. 44/54, Warsaw 01-224, Poland
| | - Przemysław Kalicki
- Institute of Organic Chemistry PAS, Kasprzaka Str. 44/54, Warsaw 01-224, Poland
| | - Jolanta Solecka
- National Institute of Public Health–National Institute of Hygiene, Chocimska Str. 24, Warsaw 00-791, Poland
| | - Anna Laskowska
- National Institute of Public Health–National Institute of Hygiene, Chocimska Str. 24, Warsaw 00-791, Poland
| | - Zofia Urbanczyk-Lipkowska
- Institute of Organic Chemistry PAS, Kasprzaka Str. 44/54, Warsaw 01-224, Poland
- Authors to whom correspondence should be addressed; E-Mails: (Z.U.-L.); (M.Z.); Tel.: +48-22-343-2207 (Z.U.-L.); +48-22-343-2221 (M.Z.); Fax: +48-22-632-6681 (Z.U.-L. & M.Z.)
| |
Collapse
|
93
|
Qiu F, Wang D, Wang R, Huan X, Tong G, Zhu Q, Yan D, Zhu X. Temperature-Induced Emission Enhancement of Star Conjugated Copolymers with Poly(2-(dimethylamino)ethyl methacrylate) Coronas for Detection of Bacteria. Biomacromolecules 2013; 14:1678-86. [DOI: 10.1021/bm4003317] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Feng Qiu
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Dali Wang
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Ruibin Wang
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Xiuying Huan
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Gangsheng Tong
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Qi Zhu
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Deyue Yan
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| | - Xinyuan Zhu
- School of
Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, and ‡Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240,
People’s Republic of China
| |
Collapse
|
94
|
Umar S, Liu Y, Wu Y, Li G, Ding J, Xiong R, Chen J. Highly potent silver-organoalkoxysilane antimicrobial porous nanomembrane. NANOSCALE RESEARCH LETTERS 2013; 8:164. [PMID: 23574791 PMCID: PMC3655005 DOI: 10.1186/1556-276x-8-164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 02/03/2013] [Indexed: 06/01/2023]
Abstract
We used a simple electrospinning technique to fabricate a highly potent silver-organoalkoxysilane antimicrobial composite from AgNO3-polyvinylpyrrolidone (PVP)/3-aminopropyltrimethoxysilane (APTMS)/tetraethoxysilane (TEOS) solution. Spectroscopic and microscopic analyses of the composite showed that the fibers contain an organoalkoxysilane 'skeleton,' 0.18 molecules/nm2 surface amino groups, and highly dispersed and uniformly distributed silver nanoparticles (5 nm in size). Incorporation of organoalkoxysilanes is highly beneficial to the antimicrobial mat as (1) amino groups of APTMS are adhesive and biocidal to microorganisms, (2) polycondensation of APTMS and TEOS increases the membrane's surface area by forming silicon bonds that stabilize fibers and form a composite mat with membranous structure and high porosity, and (3) the organoalkoxysilanes are also instrumental to the synthesis of the very small-sized and highly dispersed silver metal particles in the fiber mat. Antimicrobial property of the composite was evaluated by disk diffusion, minimum inhibition concentration (MIC), kinetic, and extended use assays on bacteria (Escherichia coli, Bacillus anthracis, Staphylococcus aureus, and Brucella suis), a fungus (Aspergillus niger), and the Newcastle disease virus. The membrane shows quick and sustained broad-spectrum antimicrobial activity. Only 0.3 mg of fibers is required to achieve MIC against all the test organisms. Bacteria are inhibited within 30 min of contact, and the fibers can be used repeatedly. The composite is silver efficient and environment friendly, and its membranous structure is suitable for many practical applications as in air filters, antimicrobial linen, coatings, bioadhesives, and biofilms.
Collapse
Affiliation(s)
- Sirajo Umar
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuanfeng Liu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yiguang Wu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Guangtao Li
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jiabo Ding
- China Institute of Veterinary Drug Control, Beijing 100081, China
| | - Runsong Xiong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jinchun Chen
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| |
Collapse
|
95
|
Kambhampati SP, Kannan RM. Dendrimer nanoparticles for ocular drug delivery. J Ocul Pharmacol Ther 2013; 29:151-65. [PMID: 23410062 DOI: 10.1089/jop.2012.0232] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Eye is a unique organ of perfection and complexity, and is a microcosm of the body in many ways. It represents a great opportunity for nanomedicine, since it is readily accessible-allowing for direct drug/gene delivery to maximize the therapeutic effect and minimize side effects. The development of appropriate delivery systems that can sustain and deliver therapeutics to the target tissues is a key challenge that can be addressed by nanotechnology. Dendrimers are tree-like, nanostructured polymers that have received significant attention as ocular drug delivery systems, due to their well-defined size, tailorable structure, and potentially favorable ocular biodistribution. In this review, we highlight recent developments in dendrimer-based ocular therapies for both anterior and posterior segment diseases.
Collapse
Affiliation(s)
- Siva P Kambhampati
- Department of Ophthalmology, Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | | |
Collapse
|
96
|
Choi SK, Myc A, Silpe JE, Sumit M, Wong PT, McCarthy K, Desai AM, Thomas TP, Kotlyar A, Holl MMB, Orr BG, Baker JR. Dendrimer-based multivalent vancomycin nanoplatform for targeting the drug-resistant bacterial surface. ACS NANO 2013; 7:214-228. [PMID: 23259666 DOI: 10.1021/nn3038995] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Vancomycin represents the preferred ligand for bacteria-targeting nanosystems. However, it is inefficient for emerging vancomycin-resistant species because of its poor affinity to the reprogrammed cell wall structure. This study demonstrates the use of a multivalent strategy as an effective way for overcoming such an affinity limitation in bacteria targeting. We designed a series of fifth generation (G5) poly(amidoamine) (PAMAM) dendrimers tethered with vancomycin at the C-terminus at different valencies. We performed surface plasmon resonance (SPR) studies to determine their binding avidity to two cell wall models, each made with either a vancomycin-susceptible (D)-Ala-(D)-Ala or vancomycin-resistant (D)-Ala-(D)-Lac cell wall precursor. These conjugates showed remarkable enhancement in avidity in the cell wall models tested, including the vancomycin-resistant model, which had an increase in avidity of four to five orders of magnitude greater than free vancomycin. The tight adsorption of the conjugate to the model surface corresponded with its ability to bind vancomycin-susceptible Staphylococcus aureus bacterial cells in vitro as imaged by confocal fluorescent microscopy. This vancomycin platform was then used to fabricate the surface of iron oxide nanoparticles by coating them with the dendrimer conjugates, and the resulting dendrimer-covered magnetic nanoparticles were demonstrated to rapidly sequester bacterial cells. In summary, this article investigates the biophysical basis of the tight, multivalent association of dendrimer-based vancomycin conjugates to the bacterial cell wall, and proposes a potential new use of this nanoplatform in targeting Gram-positive bacteria.
Collapse
Affiliation(s)
- Seok Ki Choi
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
97
|
Poly(amidoamine) dendrimer-mediated synthesis and stabilization of silver sulfonamide nanoparticles with increased antibacterial activity. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 9:85-93. [DOI: 10.1016/j.nano.2012.03.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 03/08/2012] [Accepted: 03/16/2012] [Indexed: 11/19/2022]
|
98
|
Felczak A, Zawadzka K, Wrońska N, Janaszewska A, Klajnert B, Bryszewska M, Appelhans D, Voit B, Lisowska K. Enhancement of antimicrobial activity by co-administration of poly(propylene imine) dendrimers and nadifloxacin. NEW J CHEM 2013. [DOI: 10.1039/c3nj00760j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
99
|
Xue X, Chen X, Mao X, Hou Z, Zhou Y, Bai H, Meng J, Da F, Sang G, Wang Y, Luo X. Amino-terminated generation 2 poly(amidoamine) dendrimer as a potential broad-spectrum, nonresistance-inducing antibacterial agent. AAPS JOURNAL 2012; 15:132-42. [PMID: 23135925 DOI: 10.1208/s12248-012-9416-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 09/18/2012] [Indexed: 11/30/2022]
Abstract
The treatment of septicemia caused by antibiotic-resistant bacteria is a great challenge in the clinic. Because traditional antibiotics inevitably induce bacterial resistance, which is responsible for many treatment failures, there is an urgent need to develop novel antibiotic drugs. Amino-terminated Poly(amidoamine) dendrimers (PAMAM-NH(2)) are reported to have antibacterial activities. However, previous studies focused on high generations of PAMAM-NH(2), which have been found to exhibit high toxicities. The present study aimed to clarify whether low generations of PAMAM-NH(2) could be used as novel antibacterial agents. We found that generation 2 (G2.0) PAMAM-NH(2) showed significant antibacterial effects against antibiotic-sensitive and antibiotic-resistant strains but exhibited little toxicity to human gastric epithelial cells and did not induce antibiotic resistance in bacteria. Scanning and transmission electron microscopy analyses suggested that G2.0 PAMAM-NH(2) might inhibit the growth of bacteria by destroying their cell membranes. The administration of G2.0 PAMAM-NH(2) dose-dependently improved the animal survival rate of mice infected with extended-spectrum beta lactamase-producing Escherichia coli (ESBL-EC) and of animals infected with a combination of ESBL-EC and methicillin-resistant Staphylococcus aureus. A treatment regimen of 10 mg/kg of G2.0 PAMAM-NH(2) starting 12 h before inoculation followed by 10 mg/kg at 0.5 h after inoculation rescued 100% of singly infected mice and 60% of multiply infected mice. The protective effects were associated with the reduction of the bacterial titers in the blood and with the morphological amelioration of infected tissues. These findings demonstrate that the G2.0 PAMAM-NH(2) is a potential broad-spectrum and nonresistance-inducing antibiotic agent with relatively low toxicity.
Collapse
Affiliation(s)
- Xiaoyan Xue
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, No.169, Changle West Road, Xi'an, 710032, Shaanxi Province, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
100
|
Sun B, Slomberg DL, Chudasama SL, Lu Y, Schoenfisch MH. Nitric oxide-releasing dendrimers as antibacterial agents. Biomacromolecules 2012; 13:3343-54. [PMID: 23013537 DOI: 10.1021/bm301109c] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The antibacterial activity of a series of nitric oxide (NO)-releasing poly(propylene imine) (PPI) dendrimers was evaluated against both Gram-positive and Gram-negative pathogenic bacteria, including methicillin-resistant Staphylococcus aureus . A direct comparison of the bactericidal efficacy between NO-releasing and control PPI dendrimers (i.e., non-NO-releasing) revealed both enhanced biocidal action of NO-releasing dendrimers and reduced toxicity against mammalian fibroblast cells. Antibacterial activity for the NO donor-functionalized PPI dendrimers was shown to be a function of both dendrimer size (molecular weight) and exterior functionality. In addition to minimal toxicity against fibroblasts, NO-releasing PPI dendrimers modified with styrene oxide exhibited the greatest biocidal activity (≥99.999% killing) against all bacterial strains tested. The N-diazeniumdiolate NO donor-functionalized PPI dendrimers presented in this study hold promise as effective NO-based therapeutics for combating bacterial infections.
Collapse
Affiliation(s)
- Bin Sun
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA
| | | | | | | | | |
Collapse
|