1
|
Jagannathan JR, Ma Y, Curole BJ, Grayson SM, Fenton OS, Leibfarth FA. Regioselective Palladium-Catalyzed Chain-Growth Allylic Amination Polymerization of Vinyl Aziridines. J Am Chem Soc 2024. [PMID: 38801413 DOI: 10.1021/jacs.4c02599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Organometallic-mediated chain growth polymerization of readily accessible chemical building blocks is responsible for important commercial and technological advances in polymer science, but the incorporation of heteroatoms into the polymer backbone through these mechanisms remains a challenge. Transition metal π-allyl complexes are well-developed organometallic intermediates for carbon-heteroatom bond formation in small-molecule catalysis yet remain underexplored in polymer science. Here, we developed a regioselective palladium-phosphoramidite-catalyzed chain-growth allylic amination polymerization of vinyl aziridines for the synthesis of novel nitrogen-rich polymers via ambiphilic π-allyl complexes. The polymerization accessed a linear microstructure with four carbons between each nitrogen, which is challenging to achieve through other chain-growth polymerization approaches. The highly regioselective allylic amination polymerization demonstrated the characteristics of a controlled polymerization and was able to achieve molar masses exceeding 20 kg mol-1 with low dispersities (D̵ < 1.3). The identification of the polymer structure and well-defined chain ends were supported by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and chain extension experiments demonstrate opportunities for building more complex materials from this method. A Hammett study was performed to understand the role of the catalyst and monomer structure on regioselectivity, and the data supported a mechanism wherein regioselectivity was primarily controlled by the ligand-metal complex. Postpolymerization desulfonylation provided access to a novel polyamine that demonstrated broad anticancer activity in vitro, which highlights the benefits of unlocking novel polyamine microstructures through regioselective chain-growth allylic amination polymerization.
Collapse
Affiliation(s)
- Jake R Jagannathan
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Yutian Ma
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Brennan J Curole
- Department of Chemistry, Tulane University, 6400 Freret Street, 2015 Percival Stern Hall, New Orleans, Louisiana 70118, United States
| | - Scott M Grayson
- Department of Chemistry, Tulane University, 6400 Freret Street, 2015 Percival Stern Hall, New Orleans, Louisiana 70118, United States
| | - Owen S Fenton
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Frank A Leibfarth
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
2
|
Sterin I, Tverdokhlebova A, Katz E, Smutok O. Time-Separated Pulse Release-Activation of an Enzyme from Alginate-Polyethylenimine Hydrogels Using Electrochemically Generated Local pH Changes. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38779815 DOI: 10.1021/acsami.4c05273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
β-Glucosidase (EC 3.2.1.21) from sweet almond was encapsulated into pH-responsive alginate-polyethylenimine (alginate-PEI) hydrogel. Then, electrochemically controlled cyclic local pH changes resulting from ascorbate oxidation (acidification) and oxygen reduction (basification) were used for the pulsatile release of the enzyme from the composite hydrogel. Activation of the enzyme was controlled by the very same pH changes used for β-glucosidase release, separating these two processes in time. Importantly, the activity of the enzyme, which had not been released yet, was inhibited due to the buffering effect of PEI present in the gel. Thus, only a portion of the released enzyme was activated. Both enzymatic activity and release were monitored by confocal fluorescence microscopy and regular fluorescent spectroscopy. Namely, commercially available very little or nonfluorescent substrate 4-methylumbelliferyl-β-d-glucopyranoside was hydrolyzed by β-glucosidase to produce a highly fluorescent product 4-methylumbelliferone during the activation phase. At the same time, labeling of the enzyme with rhodamine B isothiocyanate was used for release observation. The proposed work represents an interesting smart release-activation system with potential applications in biomedical field.
Collapse
Affiliation(s)
- Ilya Sterin
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Anna Tverdokhlebova
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Oleh Smutok
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| |
Collapse
|
3
|
Pandey R, Pinon V, Garren M, Maffe P, Mondal A, Brisbois EJ, Handa H. N-Acetyl Cysteine-Decorated Nitric Oxide-Releasing Interface for Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2024; 16:24248-24260. [PMID: 38693878 PMCID: PMC11103652 DOI: 10.1021/acsami.4c02369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 05/03/2024]
Abstract
Biomedical devices are vulnerable to infections and biofilm formation, leading to extended hospital stays, high expenditure, and increased mortality. Infections are clinically treated via the administration of systemic antibiotics, leading to the development of antibiotic resistance. A multimechanistic strategy is needed to design an effective biomaterial with broad-spectrum antibacterial potential. Recent approaches have investigated the fabrication of innately antimicrobial biomedical device surfaces in the hope of making the antibiotic treatment obsolete. Herein, we report a novel fabrication strategy combining antibacterial nitric oxide (NO) with an antibiofilm agent N-acetyl cysteine (NAC) on a polyvinyl chloride surface using polycationic polyethylenimine (PEI) as a linker. The designed biomaterial could release NO for at least 7 days with minimal NO donor leaching under physiological conditions. The proposed surface technology significantly reduced the viability of Gram-negative Escherichia coli (>97%) and Gram-positive Staphylococcus aureus (>99%) bacteria in both adhered and planktonic forms in a 24 h antibacterial assay. The composites also exhibited a significant reduction in biomass and extra polymeric substance accumulation in a dynamic environment over 72 h. Overall, these results indicate that the proposed combination of the NO donor with mucolytic NAC on a polymer surface efficiently resists microbial adhesion and can be used to prevent device-associated biofilm formation.
Collapse
Affiliation(s)
- Rashmi Pandey
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Vicente Pinon
- Pharmaceutical
and Biomedical Science Department, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Mark Garren
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Patrick Maffe
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Arnab Mondal
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Elizabeth J. Brisbois
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Hitesh Handa
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
- Pharmaceutical
and Biomedical Science Department, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| |
Collapse
|
4
|
Schaefer S, Melodia D, Corrigan N, Lenardon MD, Boyer C. Effect of Star Topology Versus Linear Polymers on Antifungal Activity and Mammalian Cell Toxicity. Macromol Biosci 2024; 24:e2300452. [PMID: 38009827 DOI: 10.1002/mabi.202300452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/05/2023] [Indexed: 11/29/2023]
Abstract
The global increase in invasive fungal infections and the emergence of drug-resistant strains demand the urgent development of novel antifungal drugs. In this context, synthetic polymers with diverse compositions, mimicking natural antimicrobial peptides, have shown promising potential for combating fungal infections. This study investigates how altering polymer end-groups and topology from linear to branched star-like structures affects their efficacy against Candida spp., including clinical isolates. Additionally, the polymers' biocompatibility is accessed with murine embryonic fibroblasts and red blood cells in vitro. Notably, a low-molecular weight star polymer outperforms both its linear polymeric counterparts and amphotericin B (AmpB) in terms of an improved therapeutic index and reduced haemolytic activity, despite a higher minimum inhibitory concentration against Candida albicans (C. albicans) SC5314 (16-32 µg mL-1 vs 1 µg mL-1 for AmpB). These findings demonstrate the potential of synthetic polymers with diverse topologies as promising candidates for antifungal applications.
Collapse
Affiliation(s)
- Sebastian Schaefer
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales, 2052, Australia
- School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, New South Wales, 2052, Australia
| | - Daniele Melodia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales, 2052, Australia
| | - Nathaniel Corrigan
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales, 2052, Australia
| | - Megan Denise Lenardon
- School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, New South Wales, 2052, Australia
| | - Cyrille Boyer
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales, 2052, Australia
| |
Collapse
|
5
|
Bajetto G, Scutera S, Menotti F, Banche G, Chiaradia G, Turesso C, De Andrea M, Vallino M, Es DSV, Biolatti M, Dell’Oste V, Musso T. Antimicrobial Efficacy of a Vegetable Oil Plasticizer in PVC Matrices. Polymers (Basel) 2024; 16:1046. [PMID: 38674966 PMCID: PMC11054656 DOI: 10.3390/polym16081046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
The growing prevalence of bacterial and viral infections, highlighted by the recent COVID-19 pandemic, urgently calls for new antimicrobial strategies. To this end, we have synthesized and characterized a novel fatty acid epoxy-ester plasticizer for polymers, named GDE. GDE is not only sustainable and user-friendly but also demonstrates superior plasticizing properties, while its epoxy components improve the heat stability of PVC-based matrices. A key feature of GDE is its ability to confer antimicrobial properties to surfaces. Indeed, upon contact, this material can effectively kill enveloped viruses, such as herpes simplex virus type 1 (HSV-1) and the β-coronavirus prototype HCoV-OC43, but it is ineffective against nonenveloped viruses like human adenovirus (HAdV). Further analysis using transmission electron microscopy (TEM) on HSV-1 virions exposed to GDE showed significant structural damage, indicating that GDE can interfere with the viral envelope, potentially causing leakage. Moreover, GDE demonstrates antibacterial activity, albeit to a lesser extent, against notorious pathogens such as Staphylococcus aureus and Escherichia coli. Overall, this newly developed plasticizer shows significant potential as an antimicrobial agent suitable for use in both community and healthcare settings to curb the spread of infections caused by microorganisms contaminating physical surfaces.
Collapse
Affiliation(s)
- Greta Bajetto
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
- Center for Translational Research on Autoimmune and Allergic Disease—CAAD, 28100 Novara, Italy
| | - Sara Scutera
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
| | - Francesca Menotti
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
| | - Giuliana Banche
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
| | | | | | - Marco De Andrea
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
- Center for Translational Research on Autoimmune and Allergic Disease—CAAD, 28100 Novara, Italy
| | - Marta Vallino
- Institute for Sustainable Plant Protection, National Research Centre (CNR), 10135 Turin, Italy;
| | - Daan S. Van Es
- Wageningen Food & Biobased Research, 6708 WG Wageningen, The Netherlands;
| | - Matteo Biolatti
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
| | - Valentina Dell’Oste
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
| | - Tiziana Musso
- Department of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, Italy; (G.B.); (S.S.); (F.M.); (G.B.); (M.D.A.); (V.D.); (T.M.)
| |
Collapse
|
6
|
Cui T, Ge L, Zhao M, Luo L, Long X. Amide Modification of Glycolipid Biosurfactants as Promising Biocompatible Antibacterial Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:6302-6314. [PMID: 38483152 DOI: 10.1021/acs.jafc.3c08765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Discovering new antibacterial agents is crucial to addressing the increasing risk of bacterial infections induced by antimicrobial resistance in food and agricultural industries. Here, biocompatible acidic-type sophorolipids (ASLs) and glucolipids (GLs) prepared via chemical modification of natural sophorolipids from fermentation were functionalized via amide modification for use as potential antibacterial agents. It was found that the arginine methyl ester derivative of GLs (GLs-d-Arg-OMe) showed excellent antibacterial activity, killing more than 99.99% of Escherichia coli at 200 mg/L. The sterilization dosage of the GLs against Bacillus subtilis, Bacillus cereus, and Staphylococcus aureus was 16-64 mg/L, in contrast to 32-64 mg/L for the fungus Candida albicans. In particular, GLs-d-Arg-OMe showed the best biocompatibility with a therapeutic index of up to 18. It was shown that amide modification of glycolipids can effectively improve antibacterial activity while maintaining biocompatibility, which can be exploited for the development of novel antibiotics in food and agricultural fields.
Collapse
Affiliation(s)
- Tianyou Cui
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, P. R. China
| | - Lianpeng Ge
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, P. R. China
| | - Mengqian Zhao
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, P. R. China
| | - Li Luo
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, P. R. China
| | - Xuwei Long
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, P. R. China
| |
Collapse
|
7
|
Jurjevec A, Brocard C, Striedner G, Cserjan-Puschmann M, Toca-Herrera JL, Hahn R. Understanding the mechanism of polyethyleneimine-mediated cell disintegration and protein extraction in E. coli: The role of floc network formation and PEI molecular weight. J Biotechnol 2024; 384:29-37. [PMID: 38423471 DOI: 10.1016/j.jbiotec.2024.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/21/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
Cell disintegration and protein extraction are crucial steps in downstream process development for biopharmaceuticals produced in E. coli. In this study, we explored the extraction mechanism of polyethyleneimine (PEI) at the cellular level and characterized the floc network that is formed upon PEI addition by Focused Beam Reflectance Measurement and Dispersion Analyzer. PEI disintegrates the cells by detachment of the outer membrane allowing protein to diffuse into the interspace of the flocs. Protein release into the supernatant occurs by diffusion out of the floc network. We could show that the type and concentrations of PEIs with varying molecular weight determines the floc properties and thus the extraction efficiency. We could demonstrate why optimal conditions, using 70 kDa PEI at 0.25 g/g cell dry mass, lead to efficient extraction while at suboptimal conditions extraction is almost negligible. Our findings provide valuable insights into the relationship between floc properties and PEI-driven protein extraction, with potential applications in bioprocessing and biotechnology.
Collapse
Affiliation(s)
- Alexander Jurjevec
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences, Vienna, Vienna 1190, Austria
| | - Cécile Brocard
- Boehringer Ingelheim RCV GmbH & Co KG, Dr.-Boehringer-Gasse 5-11, Wien A-1120, Austria
| | - Gerald Striedner
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences, Vienna, Vienna 1190, Austria
| | - Monika Cserjan-Puschmann
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences, Vienna, Vienna 1190, Austria
| | - José L Toca-Herrera
- Department of Bionanosciences, Institute of Biophysics, University of Natural Resources and Life Sciences, Vienna, Vienna 1190, Austria
| | - Rainer Hahn
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences, Vienna, Vienna 1190, Austria.
| |
Collapse
|
8
|
Youssef M, El-Tanany SS, Moatasim Y, Moniem SMA, Hemdan BA, Ammar NS, El-Taweel GE, Ashmawy AM, Badawy MI, Lasheen MR, Ibrahim HS, Ali MEM. Assessment of toxicity and antimicrobial performance of polymeric inorganic coagulant and evaluation for eutrophication reduction. Sci Rep 2024; 14:3391. [PMID: 38336908 PMCID: PMC10858282 DOI: 10.1038/s41598-024-53714-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/04/2024] [Indexed: 02/12/2024] Open
Abstract
In this study, the efficacy of the promising iron-based polymeric inorganic coagulant (POFC) was assessed for the reduction of eutrophication effect (freshwater toxicity) and the microbial loads from wastewater. Toxicity assessment for POFC was conducted on mice and skin cell lines. The results confirm the lower toxicity level of POFC. The POFC showed excellent antibacterial efficacy against Gram-positive and Gram-negative bacteria. Moreover, it demonstrated a remarkable effectiveness against black fungus such as Aspergillus niger and Rhizopus oryzae. Additionally, POFC showed antiviral effectiveness against the highly pathogenic H5N1 influenza virus as well as Middle East respiratory syndrome coronavirus (MERS-CoV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). POFC-based treatment gives excellent removal percentages for phosphate, and phosphorus at doses below 60 ppm with a low produced sludge volume that leads to 84% decrease in the rate of eutrophication and freshwater toxicity. At a POFC concentration of 60 ppm, remarkable reduction rates for total coliforms, fecal coliforms, and E. coli were achieved. After POFC-based coagulation, the produced sludge retains a lower bacterial density due to the antibacterial activity of POFC. Furthermore, it revealed that the observed removal efficiencies for fungi and yeasts in the produced sludge reached 85% at a POFC dose of 60 ppm. Overall, our research indicates that POFC has potential for application in pre-treatment of wastewater and serves as an antimicrobial agent.
Collapse
Affiliation(s)
- Marwa Youssef
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Sara S El-Tanany
- Environmental and Occupational Medicine Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Yassmin Moatasim
- Centre of Excellence for Influenza Viruses, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Shimaa M Abdel Moniem
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Bahaa A Hemdan
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt.
| | - Nabila S Ammar
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Gamila E El-Taweel
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Azza M Ashmawy
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Mohamed I Badawy
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Mohamed R Lasheen
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Hanan S Ibrahim
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| | - Mohamed Eid M Ali
- Water Pollution Research Department, Environmental and Climate Changes Institute, National Research Centre, El-Buhouth St., Dokki, P.O. 12622, Cairo, Egypt
| |
Collapse
|
9
|
Sarkar S, Moitra P, Bhattacharya S. Structure-activity relationship of drug conjugated polymeric materials against uropathogenic bacteria colonization under in vitro and in vivo settings. J Mater Chem B 2023; 12:187-201. [PMID: 38059523 DOI: 10.1039/d3tb01841e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The human world has been plagued with different kinds of bacterial infections from time immemorial. The increased development of resistance towards commercial antibiotics has made these bacterial infections an even more critical challenge. Bacteria have modified their mode of interactions with different types of commercial drugs by bringing changes to the receptor proteins or by other resisting mechanisms like drug efflux. Various chemical approaches have been made to date to fight against these smart adapting species. Towards this, we hypothesize chemically modifying the commercial antibacterial drugs in order to deceive the bacteria and destroy the bacterial biomass. In this study, different molecular weight polyethyleneimines are taken and conjugated with some well-known commercial drugs like penicillin and chloramphenicol to explore their antibacterial properties against some of the laboratory and uro-pathogenic strains of Gram-positive and Gram-negative bacteria. A detailed structure-activity relationship of these polymeric prodrug-like materials has been evaluated to determine the optimum formulation. The standardized system not only shows significant ∼90% bacterial killing in liquid broth culture, but also demonstrates promising bacterial inhibition towards biofilm formation for the pathogenic strains on inanimate surfaces like urinary catheters and on an in vivo mouse skin abrasion model. The reported bioactive polymeric materials can be successfully used for widespread therapeutic applications with promising medical relevance.
Collapse
Affiliation(s)
- Sourav Sarkar
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India.
| | - Parikshit Moitra
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Santanu Bhattacharya
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India.
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700032, India
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Srinivasapuram, Yerpedu Mandal, Tirupati District, Andhra Pradesh 517619, India
| |
Collapse
|
10
|
Yeh YY, Lin YY, Wang TT, Yeh YJ, Chiu TH, Wang R, Bai MY, Yeh YC. Fabrication of versatile poly(xylitol sebacate)-co-poly(ethylene glycol) hydrogels through multifunctional crosslinkers and dynamic bonds for wound healing. Acta Biomater 2023; 170:344-359. [PMID: 37607615 DOI: 10.1016/j.actbio.2023.08.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 08/02/2023] [Accepted: 08/14/2023] [Indexed: 08/24/2023]
Abstract
Poly(polyol sebacate) (PPS) polymer family has been recognized as promising biomaterials for biomedical applications with their characteristics of easy production, elasticity, biodegradation, and cytocompatibility. Poly(xylitol sebacate)-co-poly(ethylene glycol) (PXS-co-PEG) has been developed to fabricate PPS-based hydrogels; however, current PXS-co-PEG hydrogels presented limited properties and functions due to the limitations of the crosslinkers and crosslinking chemistry used in the hydrogel formation. Here, we fabricate a new type of PXS-co-PEG hydrogels through the use of multifunctional crosslinkers as well as dynamic bonds. In our design, polyethyleneimine-polydopamine (PEI-PDA) macromers are utilized to crosslink aldehyde-functionalized PXS-co-PEG (APP) through imine bonds and hydrogen bonds. PEI-PDA/APP hydrogels present multiple functional properties (e.g., fluorescent, elastomeric, biodegradable, self-healing, bioadhesive, antioxidant, and antibacterial behaviors). These properties of PEI-PDA/APP hydrogels can be fine-tuned by changing the PDA grafting degrees in the PEI-PDA crosslinkers. Most importantly, PEI-PDA/APP hydrogels are considered promising wound dressings to promote tissue remodeling and prevent bacterial infection in vivo. Taken together, PEI-PDA/APP hydrogels have been demonstrated as versatile biomaterials to provide multiple tailorable properties and desirable functions to expand the utility of PPS-based hydrogels for advanced biomedical applications. STATEMENT OF SIGNIFICANCE: Various strategies have been developed to fabricate poly(polyol sebacate) (PPS)-based hydrogels. However, current PPS-based hydrogels present limited properties and functions due to the limitations of the crosslinkers and crosslinking chemistry used in the hydrogel formation. This work describes that co-engineering crosslinkers and interfacial crosslinking is a promising approach to synthesizing a new type of poly(xylitol sebacate)-co-poly(ethylene glycol) (PXS-co-PEG) hydrogels as multifunctional hydrogels to expand the utility of PPS-based hydrogels for advanced biomedical applications. The fabricated hydrogels present multiple functional properties (e.g., fluorescent, biodegradable, elastomeric, self-healing, bioadhesive, antioxidative, and antibacterial), and these properties can be fine-tuned by the defined crosslinkers. The fabricated hydrogels are also used as promising wound dressing biomaterials to exhibit promoted tissue remodeling and prevent bacterial infection in vivo.
Collapse
Affiliation(s)
- Ying-Yu Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Yi-Yun Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Ting-Teng Wang
- Biomedical Engineering Program, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Yu-Jia Yeh
- Institute of Food Safety and Health, National Taiwan University, Taipei, Taiwan
| | - Ting-Hsiang Chiu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Reuben Wang
- Institute of Food Safety and Health, National Taiwan University, Taipei, Taiwan; Master of Public Health (MPH) Program, National Taiwan University, Taipei, Taiwan; GIP-TRIAD Master's Degree in Agro-Biomedical Science, National Taiwan University, Taipei, Taiwan
| | - Meng-Yi Bai
- Biomedical Engineering Program, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan; Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan; Adjunct Appointment to the Department of Biomedical Engineering, National Defense Medical Center, Taipei, Taiwan.
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan.
| |
Collapse
|
11
|
Liu Y, Chang J, Mao J, Wang S, Guo Z, Hu Y. Dual-network hydrogels based on dynamic imine and borate ester bonds with antibacterial and self-healing properties. Colloids Surf B Biointerfaces 2023; 230:113528. [PMID: 37666078 DOI: 10.1016/j.colsurfb.2023.113528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 08/03/2023] [Accepted: 08/28/2023] [Indexed: 09/06/2023]
Abstract
Polymeric hydrogel materials with multiple functions are in great demand in practical biomedical scenarios. In this work, a self-healing hydrogel with both antimicrobial properties was prepared using a strategy that combines dynamic imine and borate ester bonds. In this hydrogel, polyvinyl alcohol (PVA) is used as the base network, and borax solution as the cross-linking agent, and borate ester bonds can be formed between these two. Dialdehyde carboxymethyl cellulose (DCMC) was selected to cross-link with the amino groups in carboxymethyl chitosan (CMCS) and polyethyleneimine (PEI) to form dynamic imine bonds. The PVA/PEI/DCMC/CMCS hydrogels prepared by double chemical cross-linking have good mechanical properties (maximum tensile strength up to 289 KPa and strain at the break up to 1025%). Due to the uniqueness of the two chemical bonds, the hydrogel material is self-healing at room temperature without additional stimulation. In addition, the inherent antibacterial properties of the raw materials in this hydrogel confer antibacterial properties, with a kill rate of up to 99% against E. coli and S. aureus. The multifunctional hydrogels developed in this study provide more ideas and references for the future application of hydrogel materials in practical scenarios.
Collapse
Affiliation(s)
- Yalei Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China
| | - Junfang Chang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China
| | - Jie Mao
- Department of Basic, Zhejiang Pharmaceutical University, Ningbo, People's Republic of China
| | - Sui Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China.
| | - Zhiyong Guo
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China
| | - Yufang Hu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China
| |
Collapse
|
12
|
Leelawattanachai J, Panyasu K, Prasertsom K, Manakasettharn S, Duangdaw H, Budthong P, Thepphornbanchakit N, Chetprayoon P, Muangnapoh K, Srinives S, Waraho-Zhmayev D, Triampo D. Highly stable and fast-dissolving ascorbic acid-loaded microneedles. Int J Cosmet Sci 2023; 45:612-626. [PMID: 37133325 DOI: 10.1111/ics.12865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 02/14/2023] [Accepted: 05/01/2023] [Indexed: 05/04/2023]
Abstract
OBJECTIVES Ascorbic acid has many benefits to the skin. Numerous attempts to promote its topical delivery show great challenges since its chemical instability and poor skin impermeability. Microneedle delivery is a simple, safe, painless and effective means to deliver therapeutic or nourishing molecules into the skin. The purpose of this study was twofold: (a) to develop a new formulation of ascorbic acid-loaded microneedles to enhance ascorbic acid stability by investigating an optimal amount of polyethyleneimine as an additive to the dextran-based microneedle formulation and (b) to assess microneedle properties in terms of dissolving rate, skin penetration ability, biocompatibility and antimicrobial activity. METHODS The microneedles formulated with ascorbic acid and varied polyethyleneimine concentrations were fabricated and subsequently tested for ascorbic acid stability using 2,2-diphenyl-1-picrylhydrazyl assay. The dissolution rate and skin penetration depth were investigated in porcine skin and the reconstructed human full-thickness skin model respectively. The skin irritation tests were done according to the Organisation for Economic Co-operation and Development Test Guideline No. 439. An antimicrobial disc susceptibility test was performed against Escherichia coli, Staphylococcus aureus and Staphylococcus epidermidis. RESULTS Among varied amounts of 0%, 1.5%, 3.0% and 4.5% (w/v), the 3.0% polyethyleneimine showed the most desirable characteristics, including well-preserved shape integrity after demoulding, significantly improved stability of ascorbic acid (p < 0.001) from 33% to 96% antioxidant activity after 8 weeks of storage at 40°C, increased dissolving rate (p < 0.001) by being completely dissolved within 2 min after the skin insertion, passing skin penetration and biocompatibility tests as well as having a broad spectrum of antimicrobial property. CONCLUSION With a safety profile and enhanced properties, the new formulation of ascorbic acid-loaded microneedles shows outstanding potential as commercially available cosmetics and healthcare products.
Collapse
Affiliation(s)
- Jeerapond Leelawattanachai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Kedsara Panyasu
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Kornkanok Prasertsom
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Supone Manakasettharn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Hathaiphat Duangdaw
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom, Thailand
| | - Pitchaon Budthong
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Srinakharinwirot University, Nakhon Nayok, Thailand
| | | | - Paninee Chetprayoon
- Toxicology and Bio Evaluation Service Center (TBES), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Kullachate Muangnapoh
- National Metal and Material Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Sira Srinives
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom, Thailand
| | - Dujduan Waraho-Zhmayev
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Darapond Triampo
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Nakhon Pathom, Thailand
| |
Collapse
|
13
|
Mehta D, Saini V, Bajaj A. Recent developments in membrane targeting antifungal agents to mitigate antifungal resistance. RSC Med Chem 2023; 14:1603-1628. [PMID: 37731690 PMCID: PMC10507810 DOI: 10.1039/d3md00151b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/22/2023] [Indexed: 09/22/2023] Open
Abstract
Fungal infections cause severe and life-threatening complications especially in immunocompromised individuals. Antifungals targeting cellular machinery and cell membranes including azoles are used in clinical practice to manage topical to systemic fungal infections. However, continuous exposure to clinically used antifungal agents in managing the fungal infections results in the development of multi-drug resistance via adapting different kinds of intrinsic and extrinsic mechanisms. The unique chemical composition of fungal membranes presents attractive targets for antifungal drug discovery as it is difficult for fungal cells to modify the membrane targets for emergence of drug resistance. Here, we discussed available antifungal drugs with their detailed mechanism of action and described different antifungal resistance mechanisms. We further emphasized structure-activity relationship studies of membrane-targeting antifungal agents, and classified membrane-targeting antifungal agents on the basis of their core scaffold with detailed pharmacological properties. This review aims to pique the interest of potential researchers who could explore this interesting and intricate fungal realm.
Collapse
Affiliation(s)
- Devashish Mehta
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology Faridabad-121001 Haryana India
| | - Varsha Saini
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology Faridabad-121001 Haryana India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology Faridabad-121001 Haryana India
| |
Collapse
|
14
|
Delgado-Pinar E, Medeiros M, Costa T, Seixas de Melo JS. Highly Selective Fluorescent Sensors: Polyethylenimine Derivatives of Triphenylamine and Coumarin for GTP and ATP Interaction via Fluorescence Lifetime Imaging Microscopy. ACS APPLIED POLYMER MATERIALS 2023; 5:6176-6185. [PMID: 37588082 PMCID: PMC10426326 DOI: 10.1021/acsapm.3c00834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/28/2023] [Indexed: 08/18/2023]
Abstract
Chemical derivatives of polyethylenimine (PEI) receptors with either triphenylamine (TPA) or 7-hydroxy-4-methyl-coumarin (Cou) form stable complexes with adenine and guanine nucleotides in water. The host-guest complex modulation is found to be based on noncovalent molecular interactions such as π-π stacking and hydrogen bonding, which are dependent on the aromatic moieties attached to the polyaminic (PEI) backbone. PEI-TPA acts as a chemosensor with a recognition driving force based on aggregation-induced emission (AIE), involving π-π interaction between the nucleic base and TPA. It detects GTP by a chelation enhancement quenching effect of fluorescence (CHEQ) with a measured logarithm stability constant, log β = 7.7. By varying the chemical characteristics of the fluorophore, as in the PEI-Cou system, the driving force for recognition changes from a π-π interaction to an electrostatic interaction. The coumarin derivative detects ATP with a log β value one order of magnitude higher than that for GTP, allowing for the selective recognition of the two nucleotides in a 100% aqueous solution. Furthermore, fluorescence lifetime imaging microscopy (FLIM) allows for a correlation between the selectivity of PEI-TPA toward nucleotides and the morphology of the structures formed upon ATP and GTP recognition. This study offers valuable insights into the design of receptors for the selective recognition of nucleotides in water.
Collapse
Affiliation(s)
- Estefanía Delgado-Pinar
- CQC-IMS,
Department of Chemistry, University of Coimbra, Rua Larga, Coimbra 3004-535, Portugal
- Instituto
de Ciencia, Molecular, Departamento de Química Inorgánica, Universidad de Valencia, C/Catedrático José Beltrán
2, Paterna 46980, Spain
| | - Matilde Medeiros
- CQC-IMS,
Department of Chemistry, University of Coimbra, Rua Larga, Coimbra 3004-535, Portugal
| | - Telma Costa
- CQC-IMS,
Department of Chemistry, University of Coimbra, Rua Larga, Coimbra 3004-535, Portugal
| | | |
Collapse
|
15
|
Nikolić J, Ivančić A, Klačić T, Kovačević D. Synthetic versus Natural Precursor Layer: A Study on the Properties of Biocompatible Chitosan/Carboxymethyl Cellulose Nanofilms. ACS OMEGA 2023; 8:20031-20041. [PMID: 37305256 PMCID: PMC10249384 DOI: 10.1021/acsomega.3c02281] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/11/2023] [Indexed: 06/13/2023]
Abstract
Polyelectrolyte multilayers are nanofilms with vast applications in numerous areas such as medicine and food industry. Recently, they have been getting a lot of attention as potential food coatings for the prevention of fruit decay during transportation and storage, and therefore the coatings need to be biocompatible. In this study, we fabricated thin films made of biocompatible polyelectrolytes, positively charged polysaccharide chitosan, and negatively charged carboxymethyl cellulose on a model silica surface. Typically, to enhance the properties of the prepared nanofilms, the first layer (precursor layer) of poly(ethyleneimine) is used. However, for the construction of completely biocompatible coatings, this could be problematic due to potential toxicity. This study offers an option for a viable candidate as a replacement precursor layer: chitosan itself was adsorbed from a more concentrated solution. In the case of chitosan/carboxymethyl cellulose films, using chitosan over poly(ethyleneimine) as a precursor layer has shown a twofold increase in film thickness, as well as an increase in film roughness. In addition, these properties can be tuned by the presence of a biocompatible background salt (e.g., sodium chloride) in the deposition solution that has proven to change the film thickness and surface roughness depending on the salt concentration. Such a straightforward way of tuning the properties of these films combined with their biocompatibility makes this precursor material a prime candidate for use as a potential food coating.
Collapse
|
16
|
Jurjevec A, Brocard C, Striedner G, Cserjan-Puschmann M, Hahn R. Polyethyleneimine efficiently extracts recombinant cytoplasmatic green fluorescent protein produced in Escherichia coli with high purity. J Biotechnol 2023:S0168-1656(23)00114-1. [PMID: 37285941 DOI: 10.1016/j.jbiotec.2023.06.001] [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: 02/02/2023] [Revised: 05/10/2023] [Accepted: 06/02/2023] [Indexed: 06/09/2023]
Abstract
We used a polycationic polymer polyethyleneimine (PEI) to develop a method to extract recombinant proteins produced in the Escherichia coli (E. coli) cytosol. Compared to high pressure homogenization, commonly used to disrupt E. coli cells, our extraction method leads to higher purity of extracts. Upon addition of PEI to the cells, flocculation occurs and the recombinant protein gradually diffuses out of the PEI/cell network. While several aspects such as the E. coli strain, the cell or PEI concentration as well as the protein titer and the pH of the buffer seem to influence the extraction rate, our results show that the PEI molecule (molecular weight and structure) must be chosen appropriately for protein extraction. The method works well with resuspended cells but can also be applied directly to fermentation broths at higher PEI concentration. This extraction approach allows for effective reduction of DNA, endotoxins, and host cell proteins levels by 2 to 4 orders of magnitude, and drastically facilitate the subsequent downstream processing steps such as centrifugation and filtration.
Collapse
Affiliation(s)
- Alexander Jurjevec
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190 Vienna, Austria
| | - Cécile Brocard
- Boehringer Ingelheim RCV GmbH & Co KG, Dr.-Boehringer-Gasse 5-11, A-1120 Wien
| | - Gerald Striedner
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190 Vienna, Austria
| | - Monika Cserjan-Puschmann
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190 Vienna, Austria
| | - Rainer Hahn
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190 Vienna, Austria.
| |
Collapse
|
17
|
Pachla J, Kopiasz RJ, Marek G, Tomaszewski W, Głogowska A, Drężek K, Kowalczyk S, Podgórski R, Butruk-Raszeja B, Ciach T, Mierzejewska J, Plichta A, Augustynowicz-Kopeć E, Jańczewski D. Polytrimethylenimines: Highly Potent Antibacterial Agents with Activity and Toxicity Modulated by the Polymer Molecular Weight. Biomacromolecules 2023; 24:2237-2249. [PMID: 37093622 PMCID: PMC10170506 DOI: 10.1021/acs.biomac.3c00139] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Cationic polymers have been extensively investigated as a potential replacement for traditional antibiotics. Here, we examined the effect of molecular weight (MW) on the antimicrobial, cytotoxic, and hemolytic activity of linear polytrimethylenimine (L-PTMI). The results indicate that the biological activity of the polymer sharply increases as MW increases. Thanks to a different position of the antibacterial activity and toxicity thresholds, tuning the MW of PTMI allows one to achieve a therapeutic window between antimicrobial activity and toxicity concentrations. L-PTMI presents significantly higher antimicrobial activity against model microorganisms than linear polyethylenimine (L-PEI) when polymers with a similar number of repeating units are compared. For the derivatives of L-PTMI and L-PEI, obtained through N-monomethylation and partial N,N-dimethylation of linear polyamines, the antimicrobial activity and toxicity were both reduced; however, resulting selectivity indices were higher. Selected materials were tested against clinical isolates of pathogens from the ESKAPE group and Mycobacteria, revealing good antibacterial properties of L-PTMI against antibiotic-resistant strains of Gram-positive and Gram-negative bacteria but limited antibacterial properties against Mycobacteria.
Collapse
Affiliation(s)
- Julita Pachla
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Rafał J Kopiasz
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Gabriela Marek
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Waldemar Tomaszewski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Agnieszka Głogowska
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland
| | - Karolina Drężek
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Sebastian Kowalczyk
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Rafał Podgórski
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Beata Butruk-Raszeja
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Jolanta Mierzejewska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Andrzej Plichta
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland
| | - Dominik Jańczewski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| |
Collapse
|
18
|
Smart antimicrobial Pickering emulsion stabilized by pH-responsive cellulose-based nanoparticles. Int J Biol Macromol 2023; 233:123516. [PMID: 36754260 DOI: 10.1016/j.ijbiomac.2023.123516] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 02/10/2023]
Abstract
Responsive antimicrobial materials can control and slow the release of antimicrobial agents smartly by responding to the stimulation of environmental conditions. In this study, we designed the pH-responsive cellulose-based nanoparticles (TOCNC-g-PEI) with amino and carboxyl groups by grafting polyethyleneimine (PEI) to carboxylated cellulose nanocrystals. Finally, the Pickering emulsion was endowed with smart antimicrobial properties by emulsifying the oregano essential oil (OEO) with nanoparticles. The TOCNC-g-PEI25000 had uniform size, greater dispersion, and excellent antimicrobial properties. The contact angles of nanoparticles were 78.70 ± 1.13°, 55.80 ± 1.58° and 55.35 ± 1.56° at neutral conditions, pH 4.0 and 8.0, respectively. The nanoparticles were responding to pH stimulation. The developed emulsion (4:6, 1.30 wt%) had exceptionally stabilized and encapsulated 98.56 ± 1.22 % of the oil phase. The OEO released rapidly within 0-12 h and slowly at 12-36 h. The cumulative release rates quickly reached 93.60 ± 3.73 % (pH 4.0) and 83.25 ± 0.36 % (pH 8.0) and stabilized gradually. The antimicrobial rates of emulsion stimulated for 4 h reached 100 % at pH 4.0, and both of them exceeded 96.10 ± 2.49 % at pH 8.0. The response of Pickering emulsion to pH stimulating controlled release antimicrobial agents and achieved smart antimicrobial.
Collapse
|
19
|
Photoantimicrobial activity of Schiff-base Morpholino phthalocyanines against drug resistant micro-organisms in their planktonic and biofilm forms. Photodiagnosis Photodyn Ther 2023; 42:103519. [PMID: 36931368 DOI: 10.1016/j.pdpdt.2023.103519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
Antimicrobial photodynamic inactivation (aPDI) is an alternative treatment for the eradication of drug-resistant micro-organisms. One of the advantages of this technique, it that there is no possibility of microbial resistance. Hence, herein, the preparation and characterization of novel neutral and cationic morpholine containing Schiff base phthalocyanines are reported. The cationic complexes (4 and 5) gave moderate singlet oxygen quantum yields (ΦΔ) of ∼0.2 in aqueous media. Conversely, the neutral complexes generated very low ΦΔ values making them very poor candidates for antimicrobial studies. The cationic phthalocyanines showed excellent photodynamic activity against planktonic cells of all micro-organisms (Candida albicans, Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Salmonella enterica subspecies enterica serovar Choleraesuis, vancomycin-resistant E. faecium, and methicillin-resistant Staphylococcus aureus). The efficiency of aPDI was shown to be both concentration and light-dose-dependent. Mono biofilms were susceptible when treated with 200 µM of cationic Pcs at 108 J/cm2. However, ∼10% of the mixed biofilm survived after treatment.
Collapse
|
20
|
Memar MY, Yekani M, Farajnia S, Ghadiri Moghaddam F, Nabizadeh E, Sharifi S, Maleki Dizaj S. Antibacterial and biofilm-inhibitory effects of vancomycin-loaded mesoporous silica nanoparticles on methicillin-resistant staphylococcus aureus and gram-negative bacteria. Arch Microbiol 2023; 205:109. [PMID: 36884153 DOI: 10.1007/s00203-023-03447-6] [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: 07/20/2022] [Accepted: 02/21/2023] [Indexed: 03/09/2023]
Abstract
The present study aimed to prepare and characterize vancomycin-loaded mesoporous silica nanoparticles (Van-MSNs) to detect inhibitory effects on the planktonic and biofilm forms of methicillin-resistant Staphylococcus aureus (MRSA) isolates, and study the biocompatibility and toxicity of Van-MSNs in vitro as well as antibacterial activity of Van-MSNs against Gram-negative bacteria. The inhibitory effects of Van-MSNs were investigated on MRSA using the determination of minimum inhibitory (MIC) and minimum biofilm-inhibitory concentrations (MBIC) as well as the effect on bacterial attachment. Biocompatibility was studied by examining the effect of Van-MSNs on the lysis and sedimentation rate of red blood cells (RBC). The interaction of Van-MSNs with human blood plasma was detected by the SDS-PAGE approach. The cytotoxic effect of the Van-MSNs on human bone marrow mesenchymal stem cells (hBM-MSCs) was evaluated by the MTT assay. The antibacterial effects of vancomycin and Van-MSNs on Gram-negative bacteria were also investigated using MIC determination using the broth microdilution method. Furthermore, bacteria outer membrane (OM) permeabilization was determined. Van-MSNs showed inhibitory effects on planktonic and biofilm forms of bacteria on all isolates at levels lower than MICs and MBICs of free vancomycin, but the antibiofilm effect of Van-MSNs was not significant. However, Van-MSNs did not affect bacterial attachment to surfaces. Van-loaded MSNs did not show a considerable effect on the lysis and sedimentation of RBC. A low interaction of Van-MSNs was detected with albumin (66.5 kDa). The hBM-MSCs viability in exposure to different levels of Van-MSNs was 91-100%. MICs of ≥ 128 µg/mL were observed for vancomycin against all Gram-negative bacteria. In contrast, Van-MSNs exhibited modest antibacterial activity inhibiting the tested Gram-negative bacterial strains, at concentrations of ≤ 16 µg/mL. Van-MSNs increased the OM permeability of bacteria that can increase the antimicrobial effect of vancomycin. According to our findings, Van-loaded MSNs have low cytotoxicity, desirable biocompatibility, and antibacterial effects and can be an option for the battle against planktonic MRSA.
Collapse
Affiliation(s)
- Mohammad Yousef Memar
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mina Yekani
- Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran.,Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Safar Farajnia
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Edris Nabizadeh
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Simin Sharifi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
21
|
Luo Z, Ng G, Zhou Y, Boyer C, Chandrawati R. Polymeric Amines Induce Nitric Oxide Release from S-Nitrosothiols. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2200502. [PMID: 35789202 DOI: 10.1002/smll.202200502] [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: 01/24/2022] [Revised: 04/07/2022] [Indexed: 06/15/2023]
Abstract
Catalytic generation of nitric oxide (NO) from NO donors by nanomaterials has enabled prolonged NO delivery for various biomedical applications, but this approach requires laborious synthesis routes. In this study, a new class of materials, that is, polymeric amines including polyethyleneimine (PEI), poly-L-lysine, and poly(allylamine hydrochloride), is discovered to induce NO generation from S-nitrosothiols (RSNOs) at physiological conditions. Controlled NO generation can be readily achieved by tuning the concentration of the NO donors (RSNOs) and polymers, and the type and molecular weight of the polymers. Importantly, the mechanism of NO generation by these polymers is deciphered to be attributed to the nucleophilic reaction between primary amines on polymers and the SNO groups of RSNOs. The NO-releasing feature of the polymers can be integrated into a suite of materials, for example, simply by embedding PEI into poly(vinyl alcohol) (PVA) hydrogels. The functionality of the PVA/PEI hydrogels is demonstrated for Pseudomonas aeruginosa biofilm prevention with a ≈4 log reduction within 6 h. As NO has potential therapeutic implications in various diseases, the identification of polymeric amines to induce NO release will open new opportunities in NO-generating biomaterials for antibacterial, antiviral, anticancer, antithrombotic, and wound healing applications.
Collapse
Affiliation(s)
- Zijie Luo
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
| | - Gervase Ng
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
- Cluster for Advanced Macromolecular Design (CAMD), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
| | - Yingzhu Zhou
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
| | - Cyrille Boyer
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
- Cluster for Advanced Macromolecular Design (CAMD), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
| | - Rona Chandrawati
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
| |
Collapse
|
22
|
Takahashi H, Sovadinova I, Yasuhara K, Vemparala S, Caputo GA, Kuroda K. Biomimetic antimicrobial polymers—Design, characterization, antimicrobial, and novel applications. WIRES NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 15:e1866. [PMID: 36300561 DOI: 10.1002/wnan.1866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/15/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022]
Abstract
Biomimetic antimicrobial polymers have been an area of great interest as the need for novel antimicrobial compounds grows due to the development of resistance. These polymers were designed and developed to mimic naturally occurring antimicrobial peptides in both physicochemical composition and mechanism of action. These antimicrobial peptide mimetic polymers have been extensively investigated using chemical, biophysical, microbiological, and computational approaches to gain a deeper understanding of the molecular interactions that drive function. These studies have helped inform SARs, mechanism of action, and general physicochemical factors that influence the activity and properties of antimicrobial polymers. However, there are still lingering questions in this field regarding 3D structural patterning, bioavailability, and applicability to alternative targets. In this review, we present a perspective on the development and characterization of several antimicrobial polymers and discuss novel applications of these molecules emerging in the field. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
Collapse
Affiliation(s)
- Haruko Takahashi
- Graduate School of Integrated Sciences for Life Hiroshima University Higashi‐Hiroshima Hiroshima Japan
| | - Iva Sovadinova
- RECETOX, Faculty of Science Masaryk University Brno Czech Republic
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology Nara Institute of Science and Technology Nara Japan
- Center for Digital Green‐Innovation Nara Institute of Science and Technology Nara Japan
| | - Satyavani Vemparala
- The Institute of Mathematical Sciences CIT Campus Chennai India
- Homi Bhabha National Institute Training School Complex Mumbai India
| | - Gregory A. Caputo
- Department of Chemistry & Biochemistry Rowan University Glassboro New Jersey USA
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry University of Michigan Ann Arbor Michigan USA
| |
Collapse
|
23
|
Soradech S, Williams AC, Khutoryanskiy VV. Physically Cross-Linked Cryogels of Linear Polyethyleneimine: Influence of Cooling Temperature and Solvent Composition. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sitthiphong Soradech
- Reading School of Pharmacy, University of Reading, Whiteknights, ReadingRG6 6DX, U.K
- Expert Centre of Innovative Herbal Products, Thailand Institute of Scientific and Technological Research, Pathum Thani12120, Thailand
| | - Adrian C. Williams
- Reading School of Pharmacy, University of Reading, Whiteknights, ReadingRG6 6DX, U.K
| | | |
Collapse
|
24
|
Wang A, Duan S, Hu Y, Ding X, Xu FJ. Fluorination of Polyethylenimines for Augmentation of Antibacterial Potency via Structural Damage and Potential Dissipation of Bacterial Membranes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44173-44182. [PMID: 36130111 DOI: 10.1021/acsami.2c12692] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The rise of drug-resistant bacteria (e.g., methicillin-resistant Staphylococcus aureus, MRSA) has continued, making the ″super-bugs″ a formidable threat to global health. Herein, we synthesize a series of fluoroalkylated polyethylenimines (PEI-F) with different grafting degrees of fluoroalkyls via a simple ring-opening reaction and demonstrate for the first time that fluoroalkylated PEIs are able to exert potent antibacterial activity to Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Among the fluoroalkylated polymers, PEI-F3.0 shows the strongest antibacterial activity, with a minimum inhibitory concentration (MIC) of 64 μg mL-1, against both E. coli and S. aureus. More importantly, we find that PEI-F3.0 is able to kill over 99.8% of S. aureus within 1 min, which is extremely desirable for the treatment of acute and severe bacterial infections that require quick disinfection. We also demonstrate that the fluoroalkylated PEIs are able to kill bacteria via structural damage of the outer membrane (OM) and cytoplasmic membrane (CM), potential dissipation of CM, and generation of intracellular reactive oxygen species (ROS). The in vivo antibacterial test suggests that commercial Vaseline blended with 6.25 wt % of PEI-F3.0 (VL/PEI-F3.0) is able to efficaciously eradicate MRSA infection on a bacterial infected wound model and promote the healing procedure of the wound site. Therefore, the fluoroalkylated PEIs provide a promising strategy to cope with the major challenges of drug-resistant infections.
Collapse
Affiliation(s)
- Anzhi Wang
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, Beijing 100029, P.R. China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Shun Duan
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, Beijing 100029, P.R. China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Yang Hu
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, Beijing 100029, P.R. China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, Beijing 100029, P.R. China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, Beijing 100029, P.R. China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| |
Collapse
|
25
|
Shen KH, Yeh YY, Chiu TH, Wang R, Yeh YC. Dual Dynamic Covalently Crosslinked Alginate Hydrogels with Tunable Properties and Multiple Stimuli-Responsiveness. ACS Biomater Sci Eng 2022; 8:4249-4261. [PMID: 36173708 DOI: 10.1021/acsbiomaterials.2c00571] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Alginate is a biopolymer that can be crosslinked with calcium ions to fabricate cytocompatible hydrogels. However, using calcium ions to crosslink alginate provides limited properties and functions to alginate hydrogels, restricting their biomedical applications. Here, phenylboronic acid-functionalized polyethyleneimine (PBA-PEI) was developed to introduce two orthogonal dynamic covalent crosslinks in the alginate hydrogels, where PBA-PEI was used to crosslink alginate dialdehyde (ADA) through imine bonds and boronate ester bonds. The grafting degree of PBA in the PEI structure was applied to fine-tune the properties of PBA-PEI/ADA hydrogels, including the rheological property, mechanical strength, swelling behavior, and antibacterial activity. In particular, the highly sensitive boronate ester bonds in the network enabled PBA-PEI/ADA hydrogels to be responsive to several stimuli, such as glucose, fructose, and hydrogen peroxide. Taken together, PBA-PEI/ADA hydrogels with tunable properties and multiple stimuli-responsiveness have been demonstrated as smart biomaterials for advanced biomedical applications.
Collapse
Affiliation(s)
- Ke-Han Shen
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ying-Yu Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ting-Hsiang Chiu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Reuben Wang
- Institute of Food Safety and Health, National Taiwan University, Taipei 10055, Taiwan
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| |
Collapse
|
26
|
Xu X, Wang Q, Chang Y, Zhang Y, Peng H, Whittaker AK, Fu C. Antifouling and Antibacterial Surfaces Grafted with Sulfur-Containing Copolymers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:41400-41411. [PMID: 36040859 DOI: 10.1021/acsami.2c09698] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Antifouling and antibacterial surfaces that can prevent nonspecific biological adhesion are important to support a myriad of biomedical applications. In this study, we have used an innovative photopolymerization technology to develop sulfur-containing polymer-grafted antifouling and antibacterial surfaces. The relationship between the hydrophilic property and the capability to resist protein and macrophage adsorption of the surface copolymer brushes was investigated. The sulfide monomer incorporated into the surface copolymer brushes can be further ionized to carry positive charges and impart antibacterial activity, leading to surfaces with dual antifouling and antibacterial functions. We believe that the reported sulfur-containing polymer brushes can be considered an emerging and important polymer for antifouling and antibacterial applications.
Collapse
Affiliation(s)
- Xin Xu
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Qiaoyun Wang
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Yixin Chang
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Yuhao Zhang
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Andrew K Whittaker
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Changkui Fu
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| |
Collapse
|
27
|
Wesseling CJ, Martin NI. Synergy by Perturbing the Gram-Negative Outer Membrane: Opening the Door for Gram-Positive Specific Antibiotics. ACS Infect Dis 2022; 8:1731-1757. [PMID: 35946799 PMCID: PMC9469101 DOI: 10.1021/acsinfecdis.2c00193] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
New approaches to target antibacterial agents toward Gram-negative bacteria are key, given the rise of antibiotic resistance. Since the discovery of polymyxin B nonapeptide as a potent Gram-negative outer membrane (OM)-permeabilizing synergist in the early 1980s, a vast amount of literature on such synergists has been published. This Review addresses a range of peptide-based and small organic compounds that disrupt the OM to elicit a synergistic effect with antibiotics that are otherwise inactive toward Gram-negative bacteria, with synergy defined as a fractional inhibitory concentration index (FICI) of <0.5. Another requirement for the inclusion of the synergists here covered is their potentiation of a specific set of clinically used antibiotics: erythromycin, rifampicin, novobiocin, or vancomycin. In addition, we have focused on those synergists with reported activity against Gram-negative members of the ESKAPE family of pathogens namely, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, and/or Acinetobacter baumannii. In cases where the FICI values were not directly reported in the primary literature but could be calculated from the published data, we have done so, allowing for more direct comparison of potency with other synergists. We also address the hemolytic activity of the various OM-disrupting synergists reported in the literature, an effect that is often downplayed but is of key importance in assessing the selectivity of such compounds for Gram-negative bacteria.
Collapse
|
28
|
Small Diameter Cell-Free Tissue-Engineered Vascular Grafts: Biomaterials and Manufacture Techniques to Reach Suitable Mechanical Properties. Polymers (Basel) 2022; 14:polym14173440. [PMID: 36080517 PMCID: PMC9460130 DOI: 10.3390/polym14173440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/06/2022] [Accepted: 07/06/2022] [Indexed: 12/25/2022] Open
Abstract
Vascular grafts (VGs) are medical devices intended to replace the function of a blood vessel. Available VGs in the market present low patency rates for small diameter applications setting the VG failure. This event arises from the inadequate response of the cells interacting with the biomaterial in the context of operative conditions generating chronic inflammation and a lack of regenerative signals where stenosis or aneurysms can occur. Tissue Engineered Vascular grafts (TEVGs) aim to induce the regeneration of the native vessel to overcome these limitations. Besides the biochemical stimuli, the biomaterial and the particular micro and macrostructure of the graft will determine the specific behavior under pulsatile pressure. The TEVG must support blood flow withstanding the exerted pressure, allowing the proper compliance required for the biomechanical stimulation needed for regeneration. Although the international standards outline the specific requirements to evaluate vascular grafts, the challenge remains in choosing the proper biomaterial and manufacturing TEVGs with good quality features to perform satisfactorily. In this review, we aim to recognize the best strategies to reach suitable mechanical properties in cell-free TEVGs according to the reported success of different approaches in clinical trials and pre-clinical trials.
Collapse
|
29
|
Affiliation(s)
- Phuong Pham
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia
| | - Susan Oliver
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia
| |
Collapse
|
30
|
Baselga M, Uranga-Murillo I, de Miguel D, Arias M, Sebastián V, Pardo J, Arruebo M. Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media. MATERIALS 2022; 15:ma15144742. [PMID: 35888208 PMCID: PMC9318907 DOI: 10.3390/ma15144742] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/27/2022] [Accepted: 07/04/2022] [Indexed: 02/06/2023]
Abstract
The use of face masks and air purification systems has been key to curbing the transmission of SARS-CoV-2 aerosols in the context of the current COVID-19 pandemic. However, some masks or air conditioning filtration systems are designed to remove large airborne particles or bacteria from the air, being limited their effectiveness against SARS-CoV-2. Continuous research has been aimed at improving the performance of filter materials through nanotechnology. This article presents a new low-cost method based on electrostatic forces and coordination complex formation to generate antiviral coatings on filter materials using silver nanoparticles and polyethyleneimine. Initially, the AgNPs synthesis procedure was optimized until reaching a particle size of 6.2 ± 2.6 nm, promoting a fast ionic silver release due to its reduced size, obtaining a stable colloid over time and having reduced size polydispersity. The stability of the binding of the AgNPs to the fibers was corroborated using polypropylene, polyester-viscose, and polypropylene-glass spunbond mats as substrates, obtaining very low amounts of detached AgNPs in all cases. Under simulated operational conditions, a material loss less than 1% of nanostructured silver was measured. SEM micrographs demonstrated high silver distribution homogeneity on the polymer fibers. The antiviral coatings were tested against SARS-CoV-2, obtaining inactivation yields greater than 99.9%. We believe our results will be beneficial in the fight against the current COVID-19 pandemic and in controlling other infectious airborne pathogens.
Collapse
Affiliation(s)
- Marta Baselga
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Correspondence:
| | - Iratxe Uranga-Murillo
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Department of Microbiology, Pediatrics, Radiology and Public Health, Facultad de Medicina, University of Zaragoza, 50009 Zaragoza, Spain
- Networking Research Center on Infectious Diseases, CIBERINFEC, 28029 Madrid, Spain
| | - Diego de Miguel
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Department of Microbiology, Pediatrics, Radiology and Public Health, Facultad de Medicina, University of Zaragoza, 50009 Zaragoza, Spain
| | - Maykel Arias
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Department of Microbiology, Pediatrics, Radiology and Public Health, Facultad de Medicina, University of Zaragoza, 50009 Zaragoza, Spain
- Networking Research Center on Infectious Diseases, CIBERINFEC, 28029 Madrid, Spain
| | - Victor Sebastián
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Department of Chemical Engineering, Campus Río Ebro–Edificio I+D, University of Zaragoza, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Julián Pardo
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Department of Microbiology, Pediatrics, Radiology and Public Health, Facultad de Medicina, University of Zaragoza, 50009 Zaragoza, Spain
- Networking Research Center on Infectious Diseases, CIBERINFEC, 28029 Madrid, Spain
| | - Manuel Arruebo
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (I.U.-M.); (D.d.M.); (M.A.); (V.S.); (J.P.); (M.A.)
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Department of Chemical Engineering, Campus Río Ebro–Edificio I+D, University of Zaragoza, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| |
Collapse
|
31
|
Zhang Y, Jiang W, Lei L, Wang Y, Xu R, Qin L, Wei Q. Mussel-Inspired Multicomponent Codeposition Strategy toward Antibacterial and Lubricating Multifunctional Coatings on Bioimplants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7157-7167. [PMID: 35635328 DOI: 10.1021/acs.langmuir.2c00353] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bacterial infections and limited surface lubrication are the two key challenges for bioimplants in dynamic contact with tissues. However, the simultaneous lubricating and antibacterial properties of the bioimplants have rarely been investigated. In this work, we successfully developed a multifunctional coating with simultaneous antibacterial and lubricating properties for surface functionalization of bioimplant materials. The multifunctional coating was fabricated on a polyurethane (PU) substrate via polydopamine (PDA)-assisted multicomponent codeposition, containing polyethyleneimine (PEI) and trace amounts of copper (Cu) as synergistic antibacterial components and zwitterionic poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) as the lubricating component. The obtained PDA(Cu)/PEI/PMPC coating showed excellent antibacterial activity (antibacterial efficiency: ∼99%) to both Escherichia coli and Staphylococcus aureus compared with bare PU. The excellent antibacterial properties were attributed to the combined effect of anti-adhesion capability of hydrophilic PMPC and PEI and bactericidal activity of Cu in the coating. Meanwhile, the coefficient of friction of the coating was significantly decreased by ∼52% compared with bare PU owing to the high hydration feature of PMPC, suggesting the superior lubricating property. Furthermore, the PDA(Cu)/PEI/PMPC coating was highly biocompatible toward human umbilical vein endothelial cells demonstrated by in vitro cytotoxicity tests. This study not only contributes to the chemistry of PDA-assisted multicomponent codeposition but also provides a facile and practical way for rational design of multifunctional coatings for medical devices.
Collapse
Affiliation(s)
- Yixin Zhang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Wei Jiang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Lele Lei
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Ying Wang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Rongnian Xu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Long Qin
- Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - Qiangbing Wei
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| |
Collapse
|
32
|
Sethulekshmi AS, Appukuttan S, Joseph K, Aprem AS, Sisupal SB. MoS 2 based nanomaterials: Advanced antibacterial agents for future. J Control Release 2022; 348:158-185. [PMID: 35662576 DOI: 10.1016/j.jconrel.2022.05.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 02/08/2023]
Abstract
Bacterial infections are yet another serious threat to human health. Misuse or overuse of conventional antibiotics has led to the arrival of various super resistant bacteria along with many serious side effects to human body. In this exigent circumstance, the use of nanomaterial based antibacterial agents is one of the most appropriate solutions to fight against bacteria thereby causing an inhibition to bacterial proliferation. Recent studies show that, due to the large surface area, high biocompatibility, strong near-infrared (NIR) absorption and low cytotoxicity, molybdenum disulphide (MoS2), an extraordinary member in the transition metal dichalcogenides (TMDs) is extensively explored in the obliteration of many drug resistant bacteria, photothermal therapy and drug delivery. MoS2 based nanomaterials can effectively prevent bacterial growth through many mechanisms. Through this review, we have tried to provide an inclusive knowledge on the recent progress of antibacterial studies in MoS2 based nanomaterials including MoS2 nanosheets, nanoflowers, quantum dot (QD), hybrid nanocomposites and polymer nanocomposites. Moreover, toxicity of MoS2 based nanomaterials is described at the end of the review.
Collapse
Affiliation(s)
- A S Sethulekshmi
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India
| | - Saritha Appukuttan
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India..
| | - Kuruvilla Joseph
- Department of Chemistry, Indian Institute of Space Science and Technology, Valiyamala PO, Kerala, India.
| | - Abi Santhosh Aprem
- Corporate R&D Centre, HLL Lifecare Ltd. Akkulam, Trivandrum, Kerala, India.
| | | |
Collapse
|
33
|
Demirci S, Sahiner N. Polyethyleneimine based Cerium(III) and Ce(NO3)3 metal-organic frameworks with blood compatible, antioxidant and antimicrobial properties. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
34
|
Li Y, Chen Y, Wu Q, Huang J, Zhao Y, Li Q, Wang S. Improved Hydrophobic, UV Barrier and Antibacterial Properties of Multifunctional PVA Nanocomposite Films Reinforced with Modified Lignin Contained Cellulose Nanofibers. Polymers (Basel) 2022; 14:polym14091705. [PMID: 35566875 PMCID: PMC9102542 DOI: 10.3390/polym14091705] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 12/04/2022] Open
Abstract
In this study, we reported PVA nanocomposite films enhanced by polyethyleneimine (PEI)-lignin contained cellulose nanofibers (LCNFs) via the solvent casting method. An easy and available method was preformed to prepare LCNFs using a supermasscolloider from unbleached bamboo waste after a mild alkaline pretreatment. The results demonstrate that LCNF–PEI can greatly improve mechanical, hydrophobic, anti-UV shielding and antibacterial properties of the composite films. The tensile strength of LPP1 film was improved to 54.56 MPa, which was higher than 39.37 MPa of PVA film. The water contact angle of films increased from 35° to 104° with an increase in LCNF content from 0 to 6 wt%. Meanwhile, the nanocomposite film demonstrated the effect of full shielding against ultraviolet light when the amount of LCNF–PEI reached 6 wt%. The addition of LCNF–PEI endowed excellent antibacterial activity (against S. aureus and E. coli), which indicated potential applications in the packaging field.
Collapse
Affiliation(s)
- Yujie Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (Y.L.); (Y.C.); (Q.W.); (J.H.)
| | - Yifan Chen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (Y.L.); (Y.C.); (Q.W.); (J.H.)
| | - Qiang Wu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (Y.L.); (Y.C.); (Q.W.); (J.H.)
| | - Jingda Huang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (Y.L.); (Y.C.); (Q.W.); (J.H.)
| | - Yadong Zhao
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China;
| | - Qian Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (Y.L.); (Y.C.); (Q.W.); (J.H.)
- Correspondence: (Q.L.); (S.W.)
| | - Siqun Wang
- Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, USA
- Correspondence: (Q.L.); (S.W.)
| |
Collapse
|
35
|
Reungdech W, Tachaboonyakiat W. Functionalization of polylactide with multibranched poly(ethyleneimine) by in situ reactive extrusion. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
36
|
Synthesis of Cationic Hydrogels with Tunable Physicochemical Properties for Antibacterial Applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
37
|
Ntow-Boahene W, Cook D, Good L. Antifungal Polymeric Materials and Nanocomposites. Front Bioeng Biotechnol 2022; 9:780328. [PMID: 35004642 PMCID: PMC8740302 DOI: 10.3389/fbioe.2021.780328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/02/2021] [Indexed: 11/13/2022] Open
Abstract
Rising global populations due to medicinal advancements increases the patient population susceptible to superficial and severe fungal infections. Fungi often implicated in these diseases includes the dermatophytes (Microsporum spp., Epidermophtyon spp., Trichophyton spp.) as well as species of the Candida spp., Aspergillosis spp. and Cryptococcus spp. genera. In addition, increasing global populations leads to increasing agricultural demands. Thus, fungal infections of preharvested crops and stored food by plant pathogens such as Magnaporthe oryzae and Fusarium oxysporum can have detrimental socioeconomic effects due to food insecurity. Current antifungal strategies are based mainly on small molecule antifungal drugs. However, these drugs are limited by poor solubility and bioavailability. Furthermore, antifungal resistance against these drugs are on the rise. Thus, antimicrobial polymers offer an alternative antifungal strategy. Antifungal polymers are characterised by cationic and hydrophobic regions where the cationic regions have been shown to interact with microbial phospholipids and membranes. These polymers can be synthetic or natural and demonstrate distinct antifungal mechanisms ranging from fungal cell membrane permeabilisation, cell membrane depolarisation or cell entry. Although the relative importance of such mechanisms is difficult to decipher. Due to the chemical properties of these polymers, they can be combined with other antimicrobial compounds including existing antifungal drugs, charcoals, lipids and metal ions to elicit synergistic effects. In some cases, antifungal polymers and nanocomposites show better antifungal effects or reduced toxicity compared to the widely used small molecule antifungal drugs. This review provides an overview of antimicrobial polymers and nanocomposites with antifungal activity and the current understanding of their antifungal mechanisms.
Collapse
Affiliation(s)
- Winnie Ntow-Boahene
- The Royal Veterinary College, Pathobiology and Population Sciences, London, England
| | - David Cook
- Blueberry Therapeutics Ltd., Macclesfield, England
| | - Liam Good
- The Royal Veterinary College, Pathobiology and Population Sciences, London, England
| |
Collapse
|
38
|
Mary AS, Raghavan VS, Kagula S, Krishnakumar V, Kannan M, Gorthi SS, Rajaram K. Enhanced In Vitro Wound Healing Using PVA/B-PEI Nanofiber Mats: A Promising Wound Therapeutic Agent against ESKAPE and Opportunistic Pathogens. ACS APPLIED BIO MATERIALS 2021; 4:8466-8476. [PMID: 35005922 DOI: 10.1021/acsabm.1c00985] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Opportunistic skin pathogens and their resistance to pre-existing therapeutics are a challenge to normal physiological wound healing processes. Consistent development of antimicrobial agents is required to overcome the complications raised by antimicrobial resistance. An effective alternative proposed in recent research includes the use of antimicrobial nanoparticles or nanobiopolymers. Unfortunately, metallic nanoparticles that have been proven as antimicrobial agents also possess a certain level of toxicity. In this work, we demonstrate the use of a cationic polymer, branched polyethyleneimine (B-PEI), that has been electrospun to obtain a scaffold/fiber (B-PEI NF) mat resulting in a large surface area-to-volume ratio. SEM analysis revealed that the average diameter of the obtained fibers is 240 nm. The formation of nanoscaffold modulates the controlled release of the polymer from the matrix resulting in long-term effects. The antimicrobial and antibiofilm activity of the B-PEI nanofiber (B-PEI NF) was evaluated against ESKAPE pathogens (Pseudomonas aeruginosa and Staphylococcus aureus) and also against Candida albicans. Dose-dependent inhibition was observed for microbial growth and biofilm for all three test organisms, the minimum inhibitory concentration required for inhibiting P. aeruginosa, S. aureus, and C. albicans is 33.125, 26.5, and 19.875 μM, respectively, in 2 mL of bacterial/fungal broth. Crystal violet and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays showed significant reduction in biomass and cell viability of sessile cells, respectively, within the biofilm after treatment using B-PEI NFs. A B-PEI NF matrix promotes cell migration and wound healing processes by mimicking the extracellular matrix. In vitro wound healing studies showed a fivefold increase in cell migration and wound healing by B-PEI NFs (97% wound coverage in 17 h) when compared to B-PEI (15% wound coverage in 17 h). The in vitro wound healing assays confirmed the biocompatibility and better wound healing activity of B-PEI NF mats.
Collapse
Affiliation(s)
- Aarcha Shanmugha Mary
- Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Vikram Srinivasa Raghavan
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Sirisha Kagula
- Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Vinodhini Krishnakumar
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Meganathan Kannan
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Sai Siva Gorthi
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Kaushik Rajaram
- Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| |
Collapse
|
39
|
Cruz A, Condinho M, Carvalho B, Arraiano CM, Pobre V, Pinto SN. The Two Weapons against Bacterial Biofilms: Detection and Treatment. Antibiotics (Basel) 2021; 10:1482. [PMID: 34943694 PMCID: PMC8698905 DOI: 10.3390/antibiotics10121482] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 11/29/2021] [Accepted: 12/01/2021] [Indexed: 12/12/2022] Open
Abstract
Bacterial biofilms are defined as complex aggregates of bacteria that grow attached to surfaces or are associated with interfaces. Bacteria within biofilms are embedded in a self-produced extracellular matrix made of polysaccharides, nucleic acids, and proteins. It is recognized that bacterial biofilms are responsible for the majority of microbial infections that occur in the human body, and that biofilm-related infections are extremely difficult to treat. This is related with the fact that microbial cells in biofilms exhibit increased resistance levels to antibiotics in comparison with planktonic (free-floating) cells. In the last years, the introduction into the market of novel compounds that can overcome the resistance to antimicrobial agents associated with biofilm infection has slowed down. If this situation is not altered, millions of lives are at risk, and this will also strongly affect the world economy. As such, research into the identification and eradication of biofilms is important for the future of human health. In this sense, this article provides an overview of techniques developed to detect and imaging biofilms as well as recent strategies that can be applied to treat biofilms during the several biofilm formation steps.
Collapse
Affiliation(s)
- Adriana Cruz
- iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Manuel Condinho
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal; (M.C.); (B.C.); (C.M.A.)
| | - Beatriz Carvalho
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal; (M.C.); (B.C.); (C.M.A.)
| | - Cecília M. Arraiano
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal; (M.C.); (B.C.); (C.M.A.)
| | - Vânia Pobre
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal; (M.C.); (B.C.); (C.M.A.)
| | - Sandra N. Pinto
- iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| |
Collapse
|
40
|
Kuroki A, Tay J, Lee GH, Yang YY. Broad-Spectrum Antiviral Peptides and Polymers. Adv Healthc Mater 2021; 10:e2101113. [PMID: 34599850 DOI: 10.1002/adhm.202101113] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/13/2021] [Indexed: 12/18/2022]
Abstract
As the human cost of the pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is still being witnessed worldwide, the development of broad-spectrum antiviral agents against emerging and re-emerging viruses is seen as a necessity to hamper the spread of infections. Various targets during the viral life-cycle can be considered to inhibit viral infection, from viral attachment to viral fusion or replication. Macromolecules represent a particularly attractive class of therapeutics due to their multivalency and versatility. Although several antiviral macromolecules hold great promise in clinical applications, the emergence of resistance after prolonged exposure urges the need for improved solutions. In the present article, the recent advancement in the discovery of antiviral peptides and polymers with diverse structural features and antiviral mechanisms is reviewed. Future perspectives, such as, the development of virucidal peptides/polymers and their coatings against SARS-CoV-2 infection, standardization of antiviral testing protocols, and use of artificial intelligence or machine learning as a tool to accelerate the discovery of antiviral macromolecules, are discussed.
Collapse
Affiliation(s)
- Agnès Kuroki
- Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore
- Institute of Bioengineering and Bioimaging 31 Biopolis Ways, The Nanos Singapore 138669 Singapore
| | - Joyce Tay
- Institute of Bioengineering and Bioimaging 31 Biopolis Ways, The Nanos Singapore 138669 Singapore
| | - Guan Huei Lee
- Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore
| | - Yi Yan Yang
- Institute of Bioengineering and Bioimaging 31 Biopolis Ways, The Nanos Singapore 138669 Singapore
| |
Collapse
|
41
|
Su M, Yang B, Xi M, Qiang C, Yin Z. Therapeutic effect of pH-Responsive dexamethasone prodrug nanoparticles on acute lung injury. J Drug Deliv Sci Technol 2021; 66:102738. [PMID: 36568326 PMCID: PMC9760482 DOI: 10.1016/j.jddst.2021.102738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 07/15/2021] [Accepted: 07/17/2021] [Indexed: 12/27/2022]
Abstract
Acute lung injury/inflammation (ALI) is usually caused by various injury factors inside and outside the lung, which can be transformed into acute respiratory distress syndrome (ARDS) in severe cases. Alveolar macrophages play a key role in the pathogenesis of ALI, which regulate inflammatory responses by secreting inflammatory mediators. Therefore, we prepared dexamethasone (DXM)/mannose co-modified branched polyethyleneimine (PEI) (DXM-PEI-mannose, DPM) prodrug nanopartcales, which could effectively target the mannose receptor (MR) on the surface of alveolar macrophages and be used for the treatment of ALI. The DXM-PEI (DP) prodrug was obtained by linking DXM with branched PEI through Schiff base reaction. Subsequently, the pH-responsive DPM prodrug was obtained by using mannose-targeted head modification. The DPM prodrug NPs with a particle size of 115 ± 1 nm, a polydispersity index (PDI) value of 0.054 ± 0.018, and a zeta potential of 31 ± 1 mV were obtained by cross-linking. The drug loading of DPM prodrug NPs measured by the acid hydrolysis method was 51.88%, which had good serum stability and biocompatibility. By comparing the stability and property release of prodrug NPs under different pH (7.4 and 5.0) conditions, it showed that DPM prodrug NPs had certain sensitivity to the micro-acid environment. To study the targeting of mouse mononuclear macrophages, mannose-modified prodrug NPs showed significant in vitro targeting. Moreover, prodrug NPs showed good anti-inflammatory activity in vitro, which was significantly different from free drugs. In vivo biodistribution experiments also showed that it had a long-term lung targeting effect. DPM prodrug NPs also had a good therapeutic effect on ALI. In conclusion, the mannose-modified DXM prodrug NPs delivery system could specifically target lung tissues and have a good therapeutic effect, which might be useful for the treatment of lung diseases.
Collapse
Affiliation(s)
- Meiling Su
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041, China
| | - Bowen Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Mingrong Xi
- Department of Obstetrics and Gynecology, West China Second University Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Cheng Qiang
- Sichuan Industrial Institute of Antibiotics, Sinopharm Group Corporation, People's Republic of China
| | - Zongning Yin
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041, China,Corresponding author
| |
Collapse
|
42
|
Orlova AA, Aleskerova LE, Vasilieva SG, Morozov AS, Ismailov AD, Lobakova ES. Bioluminescent Toxicity Assay of Polyethylenimine-Based Sorbents. APPL BIOCHEM MICRO+ 2021. [DOI: 10.1134/s0003683821070061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
43
|
Dubrovskii AV, Kim AL, Musin EV, Ramazanov BR, Tikhonenko SA. The Discovery of the Buffer Capacity of Various Types of Polyelectrolyte Microcapsules. Polymers (Basel) 2021; 13:4026. [PMID: 34833325 PMCID: PMC8620602 DOI: 10.3390/polym13224026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/17/2021] [Accepted: 11/19/2021] [Indexed: 11/17/2022] Open
Abstract
Polyelectrolyte microcapsules, which are obtained by the method of alternate adsorption of oppositely charged polyelectrolytes onto colloidal particles of micron size, are widely used in science and industry. Nevertheless, the properties of microcapsules are still poorly understood. In particular, there is no information in the literature on the buffer capacity. However, information on the presence of a buffer capacity and an understanding of its mechanisms can both simplify the use of microcapsules and expand the scope of their application. In this regard, the buffer capacity of various types of microcapsules was studied. It was found that polyelectrolyte microcapsules consisting of polyallylamine, and polystyrene sulfonate have a buffer capacity. In addition, in an acidic medium, the buffer capacity of microcapsules containing BSA is significantly greater than that of microcapsules without protein. This is due to the fact that BSA contributes to the buffering of microcapsules. Differences in the behaviour of the buffer capacity of microcapsules with the composition (PAH/PSS)3 and (PSS/PAH)3 were found. In addition, a hypothesis has been proposed that regions of unbound polyallylamine are responsible for the buffering properties of polyelectrolyte microcapsules. This hypothesis is confirmed by the fact that incubation of microcapsules in 0.5 M NaCl increases the amount of unbound polyallylamine, which leads to an increase in the buffer capacity of microcapsules at alkaline pH values higher than the buffer capacity of capsules in an aqueous solution.
Collapse
Affiliation(s)
- Alexey V. Dubrovskii
- Institute of Theoretical and Experimental Biophysics Russian Academy of Science, Institutskaya st., 3, 142290 Puschino, Russia; (A.V.D.); (A.L.K.); (E.V.M.)
| | - Aleksandr L. Kim
- Institute of Theoretical and Experimental Biophysics Russian Academy of Science, Institutskaya st., 3, 142290 Puschino, Russia; (A.V.D.); (A.L.K.); (E.V.M.)
| | - Egor V. Musin
- Institute of Theoretical and Experimental Biophysics Russian Academy of Science, Institutskaya st., 3, 142290 Puschino, Russia; (A.V.D.); (A.L.K.); (E.V.M.)
| | - Bulat R. Ramazanov
- Faculty of Biology, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Sergey A. Tikhonenko
- Institute of Theoretical and Experimental Biophysics Russian Academy of Science, Institutskaya st., 3, 142290 Puschino, Russia; (A.V.D.); (A.L.K.); (E.V.M.)
| |
Collapse
|
44
|
Immobilization of Polyethyleneimine (PEI) on Flat Surfaces and Nanoparticles Affects Its Ability to Disrupt Bacterial Membranes. Microorganisms 2021; 9:microorganisms9102176. [PMID: 34683497 PMCID: PMC8540495 DOI: 10.3390/microorganisms9102176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/11/2021] [Accepted: 10/15/2021] [Indexed: 11/17/2022] Open
Abstract
Interactions between a widely used polycationic polymer, polyethyleneimine (PEI), and a Gram-negative bacteria, E. coli, are investigated using atomic force microscopy (AFM) quantitative imaging. The effect of PEI, a known membrane permeabilizer, is characterized by probing both the structure and elasticity of the bacterial cell envelope. At low concentrations, PEI induced nanoscale membrane perturbations all over the bacterial surface. Despite these structural changes, no change in cellular mechanics (Young’s modulus) was detected and the growth of E. coli is barely affected. However, at high PEI concentrations, dramatic changes in both structure and cell mechanics are observed. When immobilized on a flat surface, the ability of PEI to alter the membrane structure and reduce bacterial elasticity is diminished. We further probe this immobilization-induced effect by covalently attaching the polymer to the surface of polydopamine nanoparticles (PDNP). The nanoparticle-immobilized PEI (PDNP-PEI), though not able to induce major structural changes on the outer membrane of E. coli (in contrast to the flat surface), was able to bind to and reduce the Young’s modulus of the bacteria. Taken together, our data demonstrate that the state of polycationic polymers, whether bound or free—which greatly dictates their overall configuration—plays a major role on how they interact with and disrupt bacterial membranes.
Collapse
|
45
|
Okoro HK, Ndlwana L, Ikhile MI, Barnard TG, Ngila JC. Hyperbranched polyethylenimine-modified polyethersulfone (HPEI/PES) and nAg@HPEI/PES membranes with enhanced ultrafiltration, antibacterial, and antifouling properties. Heliyon 2021; 7:e07961. [PMID: 34553089 PMCID: PMC8441160 DOI: 10.1016/j.heliyon.2021.e07961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/26/2021] [Accepted: 09/06/2021] [Indexed: 11/05/2022] Open
Abstract
This study reports a simple fabrication of polyethersulfone (PES)-based membranes, their characterisation, and application. These membranes are modified with hyperbranched polyethyleneimine (HPEI) and -silver (nAg)-decorated HPEI. These were then compared for filtration, organic fouling, antifouling, and antibacterial properties against the neat PES membrane. The fabricated membranes were characterised for their chemistry using attenuated transmission reflectance-equipped Fourier transform infrared spectroscopy (ATR-FTIR) and x-ray photoelectron spectroscopy (XPS). As such, the presence of HPEI interactions between the nAg and HPEI in the membranes was confirmed. An energy-dispersive x-ray detector coupled with a scanning electron microscopy (SEM-EDS) and atomic force microscopy (AFM) were used to study morphological, compositional, topographical, and topological changes to the membrane due to the modifications. A thermogravimetric analyser (TGA) was also utilised to evaluate the effect of modification on thermal stability of the resulting membranes. Optical contact angle (OCA) interrogated the extent of membrane/water interactions which indicated enhanced hydrophilicity due to the modification. Dead-end filtration using these membranes indicated enhanced pure water permeate fluxes and protein rejection (bovine serum albumin, BSA). The results of the BSA rejection for the HPEI/PES membranes were a maximum of 98% while those of the nAg@HPEI/PES ranged between 30-87%. The membranes possessed high flux recoveries, indicating great potential for the membranes for antifouling applications in water treatment. Extensive antibacterial studies were carried out on the membranes to probe bioactivity. Enhanced activity was recorded (except for neat PES) with zone inhibitions of up to 7 mm against five bacterial strains including E. Coli and K. Pneumoniae as found in several wastewater streams. The antibacterial properties of these membranes mean they can prolong membrane operational lifetime by mitigating biofilming during water treatment. New flat sheet membranes possessing both organic antifouling and antibacterial properties were fabricated. The successive modification of PES with HPEI and nAg resulted in enhanced membrane properties. Most of the membranes exhibited good antibacterial activities against the bacterial strains tested. Membrane samples with nAg also displayed good antibacterial activities against bacteria E Coli. The use of cost friendly HPEI and low levels of modification, and ease of membrane fabrication was achieved.
Collapse
Affiliation(s)
- Hussein K Okoro
- Analytical-Environmental, Membrane Nanotechnology Research Group, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, Johannesburg, South Africa.,Environmental-Analytical Research Group, Department of Industrial Chemistry, Faculty of Physical Sciences, P.M.B. 1515, University of Ilorin, Ilorin, Nigeria
| | - Lwazi Ndlwana
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering, and Technology, University of South Africa, Florida, Science Campus, P.O. Box 392, Pretoria 003, South Africa
| | - Monisola I Ikhile
- Drugs Discovery and Smart Materials Research Group, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, Johannesburg, South Africa
| | - Tobias G Barnard
- Water and Health Research Centre, University of Johannesburg, Doornfontein Campus, South Africa
| | - J Catherine Ngila
- Analytical-Environmental, Membrane Nanotechnology Research Group, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, Johannesburg, South Africa.,The African Academy of Sciences, P.O. Box 24916-00502, 8 Miotoni Lane, Karen, Nairobi, Kenya
| |
Collapse
|
46
|
Shahid A, Aslam B, Muzammil S, Aslam N, Shahid M, Almatroudi A, Allemailem KS, Saqalein M, Nisar MA, Rasool MH, Khurshid M. The prospects of antimicrobial coated medical implants. J Appl Biomater Funct Mater 2021; 19:22808000211040304. [PMID: 34409896 DOI: 10.1177/22808000211040304] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The implants are increasingly being a part of modern medicine in various surgical procedures for functional or cosmetic purposes. The progressive use of implants is associated with increased infectious complications and prevention of such infections always remains precedence in the clinical settings. The preventive approaches include the systemic administration of antimicrobial agents before and after the surgical procedures as well as the local application of antibiotics. The relevant literature and existing clinical practices have highlighted the role of antimicrobial coating approaches in the prevention of implants associated infections, although the applications of these strategies are not yet standardized, and the clinical efficacy is not much clear. The adequate data from the randomized control trials is challenging because of the unavailability of a large sample size although it is compulsory in this context to assess the clinical efficacy of preemptive practices. This review compares the efficacy of preventive approaches and the prospects of antimicrobial-coated implants in preventing implant-related infections.
Collapse
Affiliation(s)
- Aqsa Shahid
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Bilal Aslam
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Saima Muzammil
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Nosheen Aslam
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Ahmad Almatroudi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Khaled S Allemailem
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Muhammad Saqalein
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Muhammad Atif Nisar
- Department of Microbiology, Government College University, Faisalabad, Pakistan.,College of Science and Engineering, Flinders University, Bedford Park, SA, Australia
| | | | - Mohsin Khurshid
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| |
Collapse
|
47
|
Dey R, Mukherjee S, Barman S, Haldar J. Macromolecular Nanotherapeutics and Antibiotic Adjuvants to Tackle Bacterial and Fungal Infections. Macromol Biosci 2021; 21:e2100182. [PMID: 34351064 DOI: 10.1002/mabi.202100182] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/13/2021] [Indexed: 12/19/2022]
Abstract
The escalating rise in the population of multidrug-resistant (MDR) pathogens coupled with their biofilm forming ability has struck the global health as nightmare. Alongwith the threat of aforementioned menace, the sluggish development of new antibiotics and the continuous deterioration of the antibiotic pipeline has stimulated the scientific community toward the search of smart and innovative alternatives. In near future, membrane targeting antimicrobial polymers, inspired from antimicrobial peptides, can stand out significantly to combat against the MDR superbugs. Many of these amphiphilic polymers can form nanoaggregates through self-assembly with superior and selective antimicrobial efficacy. Additionally, these macromolecular nanoaggregrates can be utilized to engineer smart antibiotic-delivery system for on-demand drug-release, exploiting the infection site's micoenvironment. This strategy substantially increases the local concentration of antibiotics and reduces the associated off-target toxicity. Furthermore, amphiphilc macromolecules can be utilized to rejuvinate obsolete antibiotics to tackle the drug-resistant infections. This review article highlights the recent developments in macromolecular architecture to design numerous nanostructures with broad-spectrum antimicrobial activity, their application in fabricating smart drug delivery systems and their efficacy as antibiotic adjuvants to circumvent antimicrobial resistance. Finally, the current challenges and future prospects are briefly discussed for further exploration and their practical application in clinical settings.
Collapse
Affiliation(s)
- Rajib Dey
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| | - Sudip Mukherjee
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| | - Swagatam Barman
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India.,Antimicrobial Research Laboratory, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| |
Collapse
|
48
|
Unexpected Enhancement of Antimicrobial Polymer Activity against Staphylococcus aureus in the Presence of Fetal Bovine Serum. Molecules 2021; 26:molecules26154512. [PMID: 34361664 PMCID: PMC8347894 DOI: 10.3390/molecules26154512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/18/2021] [Accepted: 07/20/2021] [Indexed: 11/25/2022] Open
Abstract
Cationic and amphiphilic polymers are known to exert broad-spectrum antibacterial activity by a putative mechanism of membrane disruption. Typically, nonspecific binding to hydrophobic components of the complex biological milieu, such as globular proteins, is considered a deterrent to the successful application of such polymers. To evaluate the extent to which serum deactivates antibacterial polymethacrylates, we compared their minimum inhibitory concentrations in the presence and absence of fetal bovine serum. Surprisingly, we discovered that the addition of fetal bovine serum (FBS) to the assay media in fact enhances the antimicrobial activity of polymers against Gram-positive bacteria S. aureus, whereas the opposite is the case for Gram-negative E. coli. Here, we present these unexpected trends and develop a hypothesis to potentially explain this unusual phenomenon.
Collapse
|
49
|
Chien HW, Chiu TH, Lee YL. Rapid Biocidal Activity of N-Halamine-Functionalized Polydopamine and Polyethylene Imine Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8037-8044. [PMID: 34160231 DOI: 10.1021/acs.langmuir.1c01256] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Microorganisms easily adhere to the surface of substrates and further form biofilms, which present problems in various fields. Therefore, the development of surfaces with antimicrobial adhesion or viability is a promising approach. In this study, we were committed to develop a rapid sterilizing coating. First, polyester fibers were immersed into a mixing solution of dopamine (PDA) and polyethyleneimine (PEI) for forming the co-deposition of PDA and PEI coatings. After this, the co-deposition of PDA and PEI coatings was immersed in a solution of household bleach for chlorination. We found that the nitrogens of PDA and PEI could be chlorinated repeatedly and that the oxidative chlorine content increased with the increasing PEI concentration upon co-deposition. Next, the efficacy of the co-deposition of chlorinated PDA and PEI coatings in eliminating Staphylococcus aureus and Escherichia coli was investigated. We found that the antibacterial ability of the coatings increased with increasing PEI content. In addition, the chlorinated co-deposition coatings had significantly improved antibacterial properties compared to the unchlorinated ones. The chlorinated co-deposition coatings inactivated >99.99% of S. aureus and >99.9% of E. coli after contact of less than 10 min. Therefore, chlorination of a PDA/PEI co-deposition surface is a feasible method for use in antibacterial coatings.
Collapse
Affiliation(s)
- Hsiu-Wen Chien
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan
- Photo-Sensitive Material Advanced Research and Technology Center (Photo-SMART Center), National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan
| | - Ting-Hsiang Chiu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan
| | - Yu-Ling Lee
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan
| |
Collapse
|
50
|
Sung C, Heo Y. Porous Layer-by-Layer Films Assembled Using Polyelectrolyte Blend to Control Wetting Properties. Polymers (Basel) 2021; 13:2116. [PMID: 34203206 PMCID: PMC8271915 DOI: 10.3390/polym13132116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 11/16/2022] Open
Abstract
Porous layer-by-layer (LbL) films have been employed for the implementation of superwetting surfaces, but they are limited to the LbL films consisting of only two oppositely charged polyelectrolytes. In this study, LbL films were assembled using a cationic polymer blend of branched poly(ethylene imine) (BPEI) and poly(allylamine hydrochloride) (PAH), and anionic poly(acrylic acid); they were then acid-treated at pH 1.8-2.0 to create a porous structure. The films of 100% BPEI exhibited a relatively smooth surface, whereas those of the 100% PAH exhibited porous surfaces. However, various surface morphologies were obtained when BPEI and PAH were blended. When coated with fluorinated silane, films with 50% and 100% PAH exhibited relatively higher water contact angles (WCAs). In particular, films with 50% PAH exhibited the highest WCA of 140-150° when treated at pH 1.8. These fluorinated films were further infused with lubricant oil to determine their feasibility as slippery surfaces. The water and oil sliding angles were in the range of 10-20° and 5-10°, respectively. Films prepared with the BPEI/PAH blend showed lower water slide angles than those prepared with 100% BPEI or PAH. Acid treatment of LbL films assembled using a polyelectrolyte blend can effectively control surface morphologies and can potentially be applied in superwetting.
Collapse
Affiliation(s)
- Choonghyun Sung
- Division of Advanced Materials Engineering, Dong-Eui University, Busan 47340, Korea;
| | | |
Collapse
|