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Umesh, Chandran VC, Saha P, Nath D, Bera S, Bhattacharya S, Pal A. A hydrogel based on Fe(II)-GMP demonstrates tunable emission, self-healing mechanical strength and Fenton chemistry-mediated notable antibacterial properties. NANOSCALE 2024; 16:13050-13060. [PMID: 38899974 DOI: 10.1039/d4nr01011f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Supramolecular hydrogels serve as an excellent platform to enable in situ reactive oxygen species (ROS) generation while maintaining controlled localized conditions, thereby mitigating cytotoxicity. Herein, we demonstrate hydrogel formation using guanosine-5'-monophosphate (GMP) with tetra(4-carboxylphenyl) ethylene (1) to exhibit aggregation-induced emission (AIE) and tunable mechanical strength in the presence of divalent metal ions such as Ca2+, Mg2+, and Fe2+. The addition of divalent metal ions leads to structural transformation in the metallogels (M-1GMP). Furthermore, the incorporation of Fe2+ ions into the hydrogel (Fe-1GMP) promotes the Fenton reaction that could be upregulated upon adding ascorbic acid (AA), demonstrating antibacterial efficacy via ROS generation. In vitro studies on AA-loaded Fe-1GMP demonstrate excellent bacterial killing efficacy against E. coli, S. aureus and vancomycin-resistant enterococci (VRE) strains. Finally, in vivo studies involving topical administration of Fe-1GMP to Balb/c mice with skin infections further suggest the potential antibacterial efficacy of the hydrogel. Taken together, the hydrogel with its unique combination of mechanical tunability, ROS generation capability and antibacterial efficacy can be used for biomedical applications, particularly in wound healing and infection control.
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Affiliation(s)
- Umesh
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India.
| | - Vysakh C Chandran
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India.
| | - Pranay Saha
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, 700032, India.
| | - Debasish Nath
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India.
| | - Sayan Bera
- School of Applied & Interdisciplinary Sciences, 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.
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Yerpedu Mandal, Tirupati District, Andhra Pradesh, 517619, India
| | - Asish Pal
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India.
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2
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Ghosh D, Yadav S, Bag S, Mallick AI, De P. Antibacterial activity of hydrophobicity modulated cationic polymers with enzyme and pH-responsiveness. J Mater Chem B 2024; 12:2894-2904. [PMID: 38436419 DOI: 10.1039/d3tb02801a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
The membrane lipid compositions of prokaryotic and eukaryotic cells are inherently different in many aspects, although some similarities exist in their structure and composition. Therefore, selective targeting of membrane lipids with a compound of therapeutic value, such as an antibacterial copolymer, is often challenging. Hence, developing an ideal copolymer with antibacterial properties demands hydrophobicity/hydrophilicity balance with a high biosafety profile. To integrate hydrophobic/hydrophilic balance and cationic charge in an alternating antibacterial copolymer with enzyme and pH-responsiveness, a lysine appended styrenic monomer was copolymerized with a fatty acid (octanoic acid (OA) or myristic acid (MA)) tethered maleimide monomer via reversible addition-fragmentation chain transfer (RAFT) polymerization. A range of microscopic analyses, including dynamic light scattering (DLS), confirmed the formation of nanoaggregates (size ∼30-40 nm) by these polymers in aqueous solution with positive zeta potential (cationic surface charge). Hydrophobic Nile red (NR) dye was successfully encapsulated in the nanoaggregates, and the in vitro release kinetics of the NR dye were monitored at different pHs and in the presence or absence of esterase/lipase. The in vitro release kinetics of NR revealed ∼85% dye release in the presence of pH 5.5 and lipase, suggesting their suitability for pH/enzyme-triggered therapeutic payload delivery. The standard broth microdilution assay showed significant bactericidal activity against both Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacteria with an MIC50 value <30 μg mL-1. The effect of polymeric nanoaggregates on bacterial morphology and in vitro survival was further confirmed by field emission scanning electron microscopy (FESEM), agar gel disk diffusion assay, and bacterial live/dead cell count. The significantly low hemolytic activity against red blood cells (RBCs) (HC50 >103 μg mL-1) and nontoxic effect on human intestinal epithelial cells (INT 407) (EC50 >500 μg mL-1) ensure that the polymer nanoaggregates are safe for in vivo use and can serve as a potent antibacterial polymer.
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Affiliation(s)
- Desoshree Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal 741246, India.
| | - Sandeep Yadav
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal 741246, India.
| | - Sagar Bag
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal 741246, India.
| | - Amirul Islam Mallick
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal 741246, India.
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal 741246, India.
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3
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Banerjee A, Ghosh A, Saha B, Bhadury P, De P. Surface Charge-Switchable Antifouling Block Copolymer with Bacteriostatic Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5314-5325. [PMID: 38408899 DOI: 10.1021/acs.langmuir.3c03771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Zwitterionic polymers are an emerging family of effective, low-fouling materials that can withstand unintended interactions with biological systems while exhibiting enhanced activity in bacterial matrix deterioration and biofilm eradication. Herein, we modularly synthesized an amphiphilic block copolymer, ZABCP, featuring potential bacteriostatic properties composed of a charge-switchable polyzwitterionic segment and a redox-sensitive pendant disulfide-labeled polymethacrylate block. The leucine-appended polyzwitterionic segment with alternatively positioned cationic amine and anionic carboxylate functionalities undergoes charge alterations (+ve → 0 → -ve) on pH variation. By introducing appropriate amphiphilicity, ZABCP forms distinct vesicles with redox-sensitive bilayer membranes and zwitterionic shielding coronas, enabling switching of surface charge. ZABCP vesicles exhibit 180 ± 20 nm hydrodynamic diameter, and its charge switching behavior in response to pH was confirmed by the change of zeta potential value from -23 to +36 mV. The binding interaction between ZABCP vesicles with lysozyme and pepsin proteins strengthens when the surface charge shifts from neutral (pH 7.4) to either anionic or cationic. This surface-charge-switchable phenomenon paves the way for implementing cationic ZABCP vesicles for bacterial cell growth inhibition, which is shown by the pronounced transition of cellular morphology, including clustering, aggregation, or elongation as well as membrane disruption for both Bacillus subtilis (Gram-positive) and Escherichia coli (Gram-negative). Such enhanced bacteriostatic activity could be ascribed to a strong electrostatic interaction between cationic vesicles and negatively charged bacterial membranes, leading to cell membrane disruption. Overall, this study provides a tailor-made approach to adopt low-fouling properties and potential bacteriostatic activity using zwitterionic polymers through precise control of pH.
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Affiliation(s)
- Arnab Banerjee
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Anwesha Ghosh
- Centre for Climate and Environmental Studies, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida 32310, United States
| | - Punyasloke Bhadury
- Centre for Climate and Environmental Studies, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
- Integrative Taxonomy and Microbial Ecology Research Group, Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
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4
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Ma B, Zhang J, Mi Y, Miao Q, Tan W, Guo Z. Preparation of imidazole acids grafted chitosan with enhanced antioxidant, antibacterial and antitumor activities. Carbohydr Polym 2023; 315:120978. [PMID: 37230617 DOI: 10.1016/j.carbpol.2023.120978] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/28/2023] [Accepted: 04/30/2023] [Indexed: 05/27/2023]
Abstract
Herein, imidazole acids grafted chitosan derivatives were synthesized, including HACC, HACC derivatives, TMC, TMC derivatives, amidated chitosan and amidated chitosan bearing imidazolium salts. The prepared chitosan derivatives were characterized by FT-IR and 1H NMR. The tests evaluated the biological antioxidant, antibacterial, and cytotoxic activities of chitosan derivatives. The antioxidant capacity (DPPH radical, superoxide anion radical and hydroxyl radical) of chitosan derivatives was 2.4-8.3 times higher than that of chitosan. The antibacterial capacity against E. coli and S. aureus of cationic derivatives (HACC derivatives, TMC derivatives, and amidated chitosan bearing imidazolium salts) was more active than only imidazole-chitosan (amidated chitosan). In particular, the inhibition effect of HACC derivatives on E. coli was 15.625 μg/mL. Moreover, the series of chitosan derivatives bearing imidazole acids showed certain activity against MCF-7 and A549 cells. The present results suggest that the chitosan derivatives in this paper seem to be promising carrier materials for use in drug delivery systems.
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Affiliation(s)
- Bing Ma
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Jingjing Zhang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Yingqi Mi
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Qin Miao
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Wenqiang Tan
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Zhanyong Guo
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China.
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5
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Parcheta M, Sobiesiak M. Preparation and Functionalization of Polymers with Antibacterial Properties-Review of the Recent Developments. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4411. [PMID: 37374596 DOI: 10.3390/ma16124411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/07/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023]
Abstract
The presence of antibiotic-resistant bacteria in our environment is a matter of growing concern. Consumption of contaminated drinking water or contaminated fruit or vegetables can provoke ailments and even diseases, mainly in the digestive system. In this work, we present the latest data on the ability to remove bacteria from potable water and wastewater. The article discusses the mechanisms of the antibacterial activity of polymers, consisting of the electrostatic interaction between bacterial cells and the surface of natural and synthetic polymers functionalized with metal cations (polydopamine modified with silver nanoparticles, starch modified with quaternary ammonium or halogenated benzene). The synergistic effect of polymers (N-alkylaminated chitosan, silver doped polyoxometalate, modified poly(aspartic acid)) with antibiotics has also been described, allowing for precise targeting of drugs to infected cells as a preventive measure against the excessive spread of antibiotics, leading to drug resistance among bacteria. Cationic polymers, polymers obtained from essential oils (EOs), or natural polymers modified with organic acids are promising materials in the removal of harmful bacteria. Antimicrobial polymers are successfully used as biocides due to their acceptable toxicity, low production costs, chemical stability, and high adsorption capacity thanks to multi-point attachment to microorganisms. New achievements in the field of polymer surface modification in order to impart antimicrobial properties were summarized.
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Affiliation(s)
- Monika Parcheta
- Department of Polymer Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Skłodowskiej sq 3., 20 031 Lublin, Poland
| | - Magdalena Sobiesiak
- Department of Polymer Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Skłodowskiej sq 3., 20 031 Lublin, Poland
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6
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Kumar A, Sharma J, Srivastava P, Nebhani L. Mechanically robust and highly bactericidal macroporous polymeric gels based on quaternized N, N-(dimethylamino)ethyl methacrylate possessing varying alkyl chain lengths. J Mater Chem B 2023; 11:2234-2248. [PMID: 36794579 DOI: 10.1039/d2tb02178a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this paper, macroporous antimicrobial polymeric gels (MAPGs) functionalized with active quaternary ammonium cations attached to varying hydrocarbon chain lengths have been fabricated. Apart from the change in the alkyl chain length attached to the quaternary ammonium cation, the amount of crosslinker was also varied during the fabrication of the macroporous gels. The prepared gels were characterized using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy (FE-SEM) and swelling studies. In addition, the mechanical properties of the fabricated macroporous gels were studied using compression and tensile testing. The antimicrobial activity of the gels has been determined for Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa) as well as Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus). Antimicrobial activity, as well as the mechanical properties of the macroporous gels, was found to be influenced by the alkyl chain length attached to the quaternary ammonium cations as well as by the amount of crosslinker used for the fabrication of the gel. In addition, on increasing the alkyl chain length from C4 (butyl) to C8 (octyl), the effectiveness of the polymeric gels increased. It was observed that the gels derived using a tertiary amine (NMe2) containing monomer showed relatively low antimicrobial activity as compared to the gels obtained using quaternized monomers (C4 (butyl), C6 (hexyl), and C8 (octyl)). The gels based on the quaternized C8 monomer displayed the highest antimicrobial activity and mechanical stability as compared to the gels based on the C4 and C6 monomers.
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Affiliation(s)
- Amit Kumar
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
| | - Jyoti Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
| | - Preeti Srivastava
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
| | - Leena Nebhani
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
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7
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Maity T, Paul S, De P. Side-chain amino acid-based macromolecular architectures. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2023. [DOI: 10.1080/10601325.2023.2169158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Tanmoy Maity
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Soumya Paul
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
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8
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Hamdan N, Khodir WKWA, Hamid SA, Nasir MHM, Hamzah AS, Cruz-Maya I, Guarino V. PCL/Gelatin/Graphene Oxide Electrospun Nanofibers: Effect of Surface Functionalization on In Vitro and Antibacterial Response. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:488. [PMID: 36770449 PMCID: PMC9921190 DOI: 10.3390/nano13030488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/09/2023] [Accepted: 01/21/2023] [Indexed: 06/18/2023]
Abstract
The emergence of resistance to pathogenic bacteria has resulted from the misuse of antibiotics used in wound treatment. Therefore, nanomaterial-based agents can be used to overcome these limitations. In this study, polycaprolactone (PCL)/gelatin/graphene oxide electrospun nanofibers (PGO) are functionalized via plasma treatment with the monomeric groups diallylamine (PGO-M1), acrylic acid (PGO-M2), and tert-butyl acrylate (PGO-M3) to enhance the action against bacteria cells. The surface functionalization influences the morphology, surface wettability, mechanical properties, and thermal stability of PGO nanofibers. PGO-M1 and PGO-M2 exhibit good antibacterial activity against Staphylococcus aureus and Escherichia coli, whereas PGO-M3 tends to reduce their antibacterial properties compared to PGO nanofibers. The highest proportion of dead bacteria cells is found on the surface of hydrophilic PGO-M1, whereas live cells are colonized on the surface of hydrophobic PGO-M3. Likewise, PGO-M1 shows a good interaction with L929, which is confirmed by the high levels of adhesion and proliferation with respect to the control. All the results confirm that surface functionalization can be strategically used as a tool to engineer PGO nanofibers with controlled antibacterial properties for the fabrication of highly versatile devices suitable for different applications (e.g., health, environmental pollution).
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Affiliation(s)
- Nazirah Hamdan
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Pahang, Malaysia
| | - Wan Khartini Wan Abdul Khodir
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Pahang, Malaysia
- SYNTOF, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Pahang, Malaysia
| | - Shafida Abd Hamid
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Pahang, Malaysia
- SYNTOF, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Pahang, Malaysia
| | - Mohd Hamzah Mohd Nasir
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Pahang, Malaysia
| | - Ahmad Sazali Hamzah
- Institute of Science, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia
| | - Iriczalli Cruz-Maya
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Mostra d’Oltremare Pad.20, V.le J.F.Kennedy 54, 80125 Naples, Italy
| | - Vincenzo Guarino
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Mostra d’Oltremare Pad.20, V.le J.F.Kennedy 54, 80125 Naples, Italy
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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.
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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
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10
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Cui X, Lü Y, Yue C. Development and Research Progress of Anti-Drug Resistant Bacteria Drugs. Infect Drug Resist 2022; 14:5575-5593. [PMID: 34992385 PMCID: PMC8711564 DOI: 10.2147/idr.s338987] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/12/2021] [Indexed: 01/10/2023] Open
Abstract
Bacterial resistance has become increasingly serious because of the widespread use and abuse of antibiotics. In particular, the emergence of multidrug-resistant bacteria has posed a serious threat to human public health and attracted the attention of the World Health Organization (WHO) and the governments of various countries. Therefore, the establishment of measures against bacterial resistance and the discovery of new antibacterial drugs are increasingly urgent to better contain the emergence of bacterial resistance and provide a reference for the development of new antibacterial drugs. In this review, we discuss some antibiotic drugs that have been approved for clinical use and a partial summary of the meaningful research results of anti-drug resistant bacterial drugs in different fields, including the antibiotic drugs approved by the FDA from 2015 to 2020, the potential drugs against drug-resistant bacteria, the new molecules synthesized by chemical modification, combination therapy, drug repurposing, immunotherapy and other therapies.
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Affiliation(s)
- Xiangyi Cui
- Key Laboratory of Microbial Drugs Innovation and Transformation of Yan'an, School of Basic Medicine, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China
| | - Yuhong Lü
- Key Laboratory of Microbial Drugs Innovation and Transformation of Yan'an, School of Basic Medicine, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China.,Shaanxi Engineering & Technological Research Center for Conversation & Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China
| | - Changwu Yue
- Key Laboratory of Microbial Drugs Innovation and Transformation of Yan'an, School of Basic Medicine, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China.,Shaanxi Engineering & Technological Research Center for Conversation & Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China
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11
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Barman R, Ray D, Aswal VK, Ghosh S. Chain-folding regulated self-assembly, outstanding bactericidal activity and biofilm eradication by biomimetic amphiphilic polymers. Polym Chem 2022. [DOI: 10.1039/d2py00625a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chain-folding regulated hierarchical self-assembly of cationic host defense peptide mimicking amphiphilic polyurethanes exhibit excellent antibacterial activity and biofilm killing.
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Affiliation(s)
- Ranajit Barman
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, Pin-700032, India
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - V. K. Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, Pin-700032, India
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12
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Hamdan N, Yamin A, Hamid SA, Khodir WKWA, Guarino V. Functionalized Antimicrobial Nanofibers: Design Criteria and Recent Advances. J Funct Biomater 2021; 12:59. [PMID: 34842715 PMCID: PMC8628998 DOI: 10.3390/jfb12040059] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/21/2021] [Accepted: 10/26/2021] [Indexed: 12/13/2022] Open
Abstract
The rise of antibiotic resistance has become a major threat to human health and it is spreading globally. It can cause common infectious diseases to be difficult to treat and leads to higher medical costs and increased mortality. Hence, multifunctional polymeric nanofibers with distinctive structures and unique physiochemical properties have emerged as a neo-tool to target biofilm and overcome deadly bacterial infections. This review emphasizes electrospun nanofibers' design criteria and properties that can be utilized to enhance their therapeutic activity for antimicrobial therapy. Also, we present recent progress in designing the surface functionalization of antimicrobial nanofibers with non-antibiotic agents for effective antibacterial therapy. Lastly, we discuss the future trends and remaining challenges for polymeric nanofibers.
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Affiliation(s)
- Nazirah Hamdan
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Malaysia; (N.H.); (A.Y.); (S.A.H.)
| | - Alisa Yamin
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Malaysia; (N.H.); (A.Y.); (S.A.H.)
| | - Shafida Abd Hamid
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Malaysia; (N.H.); (A.Y.); (S.A.H.)
- SYNTOF, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Malaysia
| | - Wan Khartini Wan Abdul Khodir
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Malaysia; (N.H.); (A.Y.); (S.A.H.)
- SYNTOF, Kulliyyah of Science, International Islamic University Malaysia Kuantan Campus, Bandar Indera Mahkota, Kuantan 25200, Malaysia
| | - Vincenzo Guarino
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Mostra d’Oltremare Pad.20, V.le J.F.Kennedy 54, 80125 Naples, Italy
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13
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Pushpa Yadav, Hafeez S, Jaishankar J, Srivastava P, Nebhani L. Antimicrobial and Responsive Zwitterionic Polymer Based on Cysteine Methacrylate Synthesized via RAFT Polymerization. POLYMER SCIENCE SERIES A 2021. [DOI: 10.1134/s0965545x21050163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Nayak K, Ghosh P, Khan MEH, De P. Side‐chain amino‐acid‐based polymers: self‐assembly and bioapplications. POLYM INT 2021. [DOI: 10.1002/pi.6278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Kasturee Nayak
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia India
| | - Pooja Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia India
| | - Md Ezaz Hasan Khan
- School of General Education, College of the North Atlantic – Qatar Doha Qatar
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia India
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15
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Kumbhakar K, Dey A, Mondal A, De P, Biswas R. Interactions and Dynamics in Aqueous Solutions of pH-Responsive Polymers: A Combined Fluorescence and Dielectric Relaxation Study. J Phys Chem B 2021; 125:6023-6035. [PMID: 34057364 DOI: 10.1021/acs.jpcb.1c03435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Interaction and dynamics of aqueous solutions of pH-responsive smart polymers are investigated via steady-state, time-resolved fluorescence emission spectroscopy with the help of external local reporter coumarin 153 (C153), while MHz to GHz dielectric relaxation spectroscopic (DRS) measurement reports the intrinsic medium relaxation features. A series of pH-responsive random copolymers (DPL-DP60) comprising of a pH-responsive moiety 2-((leucinyl)oxy)ethyl methacrylate (l-Leu-HEMA) and hydrophobic methyl methacrylate (MMA) are synthesized and characterized. A balance between the pH-responsive (l-Leu-HEMA) and the hydrophobic (MMA) content dictates the phase transition pH, which is found to be ∼5-7 for these aqueous copolymer solutions (1 mg/mL). Dynamic light scattering measurements in aqueous solutions of these polymers reflect a small particle size (∼2-8 nm) at solution pH below their individual phase transition pH, while a large particle size (∼140-340 nm) forms beyond their phase transition pH. No signature of a phase transition pH-driven abrupt change in static and dynamic properties of aqueous polymer solutions has been registered from pH-dependent dielectric relaxation as well as solute (C153)-centric fluorescence measurements. A significant impact of varying the l-Leu-HEMA/MMA segment ratio on steady-state fluorescence emission and rotational anisotropy decay of the fluorophore solute (C153) has been observed. MHz to GHz DRS in aqueous solutions of these pH-responsive polymers reflects bulk water-like dielectric features.
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Affiliation(s)
- Kajal Kumbhakar
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
| | - Asmita Dey
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Amrita Mondal
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Ranjit Biswas
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
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16
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Murti RH, Afifah EN, Nuringtyas TR. Metabolomic Response of Tomatoes ( Solanum lycopersicum L.) against Bacterial Wilt ( Ralstonia solanacearum) Using 1H-NMR Spectroscopy. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10061143. [PMID: 34205226 PMCID: PMC8226496 DOI: 10.3390/plants10061143] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/19/2021] [Accepted: 05/26/2021] [Indexed: 05/31/2023]
Abstract
Ralstonia solanacearum is the pathogen responsible for wilting, yield losses, and death in tomato plants. The use of resistant cultivars has been proven as the most appropriate solution to controlling this pathogen. Therefore, further study of host-plant resistance mechanisms in tomatoes is urgently needed. 1H-NMR (nuclear magnetic resonance) spectroscopy combined with multivariate data analysis has been used to identify the biochemical compounds that play a crucial role in the defense mechanisms of tomato against bacterial wilt. Eleven metabolites consisting of amino acids, sugars and organic acids were identified and presented at different concentrations in each cultivar. Leucine and valine were determined as distinguishable metabolites of resistant and susceptible cultivars. Permata and Hawaii 7996 as resistant cultivars had a significant decrease of valine after inoculation about 1.5-2 times compared to the susceptible cultivar (GM2). Meanwhile, the resistant cultivars had a higher level of leucine, about 1.3-1.5 times compared to the susceptible ones. Synthesis of leucine and valine are linked as a member of the pyruvate family. Therefore, the decrease in valine may be related to the higher need for leucine to form the leucine-rich receptor, which plays a role in the plant's immune system against the bacterial wilt.
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Affiliation(s)
- Rudi Hari Murti
- Department of Agronomy, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia;
| | - Enik Nurlaili Afifah
- Department of Agronomy, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia;
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17
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Jones JB, Liu L, Rank LA, Wetzel D, Woods EC, Biok N, Anderson SE, Lee MR, Liu R, Huth S, Sandhu BK, Gellman SH, McBride SM. Cationic Homopolymers Inhibit Spore and Vegetative Cell Growth of Clostridioides difficile. ACS Infect Dis 2021; 7:1236-1247. [PMID: 33739823 PMCID: PMC8130196 DOI: 10.1021/acsinfecdis.0c00843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A wide range of synthetic polymers have been explored for antimicrobial activity. These materials usually contain both cationic and hydrophobic subunits because these two characteristics are prominent among host-defense peptides. Here, we describe a series of nylon-3 polymers containing only cationic subunits and their evaluation against the gastrointestinal, spore-forming pathogen Clostridioides difficile. Despite their highly hydrophilic nature, these homopolymers showed efficacy against both the vegetative and spore forms of the bacterium, including an impact on C. difficile spore germination. The polymer designated P34 demonstrated the greatest efficacy against C. difficile strains, along with low propensities to lyse human red blood cells or intestinal epithelial cells. To gain insight into the mechanism of P34 action, we evaluated several cell-surface mutant strains of C. difficile to determine the impacts on growth, viability, and cell morphology. The results suggest that P34 interacts with the cell wall, resulting in severe cell bending and death in a concentration-dependent manner. The unexpected finding that nylon-3 polymers composed entirely of cationic subunits display significant activities toward C. difficile should expand the range of other polymers considered for antibacterial applications.
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Affiliation(s)
- Joshua B. Jones
- Department of Microbiology and Immunology, Emory University School of Medicine, Emory Antibiotic Resistance Center, Atlanta, GA, USA
| | - Lei Liu
- Department of Chemistry and Department of Medicine, University of Wisconsin, Madison, WI, USA
| | | | - Daniela Wetzel
- Department of Microbiology and Immunology, Emory University School of Medicine, Emory Antibiotic Resistance Center, Atlanta, GA, USA
| | - Emily C. Woods
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Naomi Biok
- Department of Chemistry and Department of Medicine, University of Wisconsin, Madison, WI, USA
| | | | - Myung-ryul Lee
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Sean Huth
- Department of Chemistry, Princeton University, Princeton, NJ, USA
| | - Brindar K. Sandhu
- Department of Microbiology and Immunology, Emory University School of Medicine, Emory Antibiotic Resistance Center, Atlanta, GA, USA
| | - Samuel H. Gellman
- Department of Chemistry and Department of Medicine, University of Wisconsin, Madison, WI, USA
| | - Shonna M. McBride
- Department of Microbiology and Immunology, Emory University School of Medicine, Emory Antibiotic Resistance Center, Atlanta, GA, USA
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18
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Schito AM, Piatti G, Caviglia D, Zuccari G, Alfei S. Broad-Spectrum Bactericidal Activity of a Synthetic Random Copolymer Based on 2-Methoxy-6-(4-Vinylbenzyloxy)-Benzylammonium Hydrochloride. Int J Mol Sci 2021; 22:5021. [PMID: 34065133 PMCID: PMC8125966 DOI: 10.3390/ijms22095021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 12/11/2022] Open
Abstract
Low-molecular-weight organic ammonium salts exert excellent antimicrobial effects by interacting lethally with bacterial membranes. Unfortunately, short-term functionality and high toxicity limit their clinical application. On the contrary, the equivalent macromolecular ammonium salts, derived from the polymerization of monomeric ammonium salts, have demonstrated improved antibacterial potency, a lower tendency to develop resistance, higher stability, long-term activity, and reduced toxicity. A water-soluble non-quaternary copolymeric ammonium salt (P7) was herein synthetized by copolymerizing 2-methoxy-6-(4-vinylbenzyloxy)-benzylammonium hydrochloride monomer with N, N-di-methyl-acrylamide. The antibacterial activity of P7 was assessed against several multidrug-resistant (MDR) clinical isolates of both Gram-positive and Gram-negative species. Except for colistin-resistant Pseudomonas aeruginosa, most isolates were susceptible to P7, also including some Gram-negative bacteria with a modified charge in the external membrane. P7 showed remarkable antibacterial activity against isolates of Enterococcus, Staphylococcus, Acinetobacter, and Pseudomonas, and on different strains of Escherichia coli and Stenotrophomonas maltophylia, regardless of their antibiotic resistance. The lowest minimal inhibitory concentrations (MICs) observed were 0.6-1.2 µM and the minimal bactericidal concentrations (MBC) were frequently overlapping with the MICs. In 24-h time-kill and turbidimetric studies, P7 displayed a rapid non-lytic bactericidal activity. P7 could therefore represent a novel and potent tool capable of counteracting infections sustained by several bacteria that are resistant to the presently available antibiotics.
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Affiliation(s)
- Anna Maria Schito
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, I-16132 Genova, Italy; (A.M.S.); (G.P.); (D.C.)
| | - Gabriela Piatti
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, I-16132 Genova, Italy; (A.M.S.); (G.P.); (D.C.)
| | - Debora Caviglia
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, I-16132 Genova, Italy; (A.M.S.); (G.P.); (D.C.)
| | - Guendalina Zuccari
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy;
| | - Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy;
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19
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Su Y, Li P, Gao D, Lyu B, Ma J, Zhang J, Lyu L. High-efficiency antibacterial and anti-mildew properties under self-assembly: An environmentally friendly nanocomposite. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.05.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Naaz F, Farooq U, Khan MAM, Ahmad T. Multifunctional Efficacy of Environmentally Benign Silver Nanospheres for Organic Transformation, Photocatalysis, and Water Remediation. ACS OMEGA 2020; 5:26063-26076. [PMID: 33073133 PMCID: PMC7558020 DOI: 10.1021/acsomega.0c03584] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
Highly crystalline and monophasic silver nanospheres with a high specific surface area of 57 m2/g have been synthesized by an environmentally benign rapid chemical reduction using l-alanine for catalytic transformation, photocatalytic degradation, and bacterial disinfection, which can provide an ample strategy for water remediation. Electron microscopic analysis confirms the spherical morphology of as-prepared silver nanoparticles with an average grain size of 20 nm. Silver nanospheres showed excellent catalytic activity for the catalytic hydrogenation and conversion (95.6%) of 4-nitrophenol to 4-aminophenol. Significant photocatalytic degradation proficiency was also shown for methylene blue (94.5%) and rhodamine B (96.3%) dyes under solar irradiation. The antibacterial behavior of Ala-Ag nanospheres was demonstrated through the disk diffusion antibacterial assay against Gram-positive (Escherichia coli) and Gram-negative (Staphylococcus aureus) bacteria. Multifunctional efficiency of as-prepared Ala-Ag nanospheres for water remediation has also been established.
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Affiliation(s)
- Farha Naaz
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| | - Umar Farooq
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| | - M. A. Majeed Khan
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Tokeer Ahmad
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
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21
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Self-Assembled Monolayer Formation on a Dental Orthodontic Stainless Steel Wire Surface to Suppress Metal Ion Elution. COATINGS 2020. [DOI: 10.3390/coatings10040367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Metal ion elution, including Cr and Ni from dental orthodontic stainless steel, accounts for some allergies. In this study, a self-assembled monolayer (SAM) on a wire surface is proposed for suppressing such elution. This method involves modifying the stainless steel surface using phosphonic acid containing a long alkyl chain. The uncoated and coated wires are immersed in different acidic solutions, and the supernatant is analyzed by inductively coupled plasma mass spectrometry after 1–4 weeks. The results reveal that Cr and Ni ion elution is significantly suppressed by SAM modification. These findings will help in minimizing potential allergens from dental orthodontics.
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22
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He X, Yang Y, Song H, Wang S, Zhao H, Wei D. Polyanionic Composite Membranes Based on Bacterial Cellulose and Amino Acid for Antimicrobial Application. ACS APPLIED MATERIALS & INTERFACES 2020; 12:14784-14796. [PMID: 32141282 DOI: 10.1021/acsami.9b20733] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ideal wound dressing materials should be active components in the healing process. Bacterial cellulose (BC) has attracted a great deal of attention as novel wound dressing materials; however, it has no intrinsic antimicrobial activity. To explore the practical application values of BC and develop novel wound dressing materials, a series of composite membranes based on BC and polymeric ionic liquids (BC/PILs, composed of BC, and PILs formed by choline and different amino acids) with antimicrobial activity were synthesized by an ex situ method. The physicochemical and antimicrobial properties and biocompatibility of these membranes were systematically investigated. The results indicated that BC/PIL membranes with excellent properties could be obtained by adjusting the concentration and type of PILs. Several kinds of BC/PIL membranes exhibited good biocompatibility and high antimicrobial activity against Gram-positive and Gram-negative bacteria and fungus. The anionic PILs played important roles in the antimicrobial activity of BC/PIL membranes. The obtained membranes provided a novel promising candidate for wound dressing materials.
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Affiliation(s)
- Xiaoling He
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Yuqing Yang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Haode Song
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Shuai Wang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - He Zhao
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Dongsheng Wei
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, China
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23
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Barman S, Konai MM, Samaddar S, Haldar J. Amino Acid Conjugated Polymers: Antibacterial Agents Effective against Drug-Resistant Acinetobacter baumannii with No Detectable Resistance. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33559-33572. [PMID: 31424189 DOI: 10.1021/acsami.9b09016] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An optimum hydrophilic/hydrophobic balance has been recognized as a crucial parameter in designing cationic polymers that mimic antimicrobial peptides (AMPs). To date, this balance was achieved either by hydrophilicity variation through altering the nature and the number of cationic charges or by hydrophobicity modulation through incorporation of alkyl groups of different chain lengths. However, how the hydrophobicity variation through AMPs' building blocks-amino acids-influences the antibacterial efficacy of AMP-mimicking cationic polymers has rarely been explored. Toward this goal, herein we report a class of amino acid conjugated polymers (ACPs) with tunable antibacterial activity through a simple post-polymer-functionalization strategy. Our polymeric design comprised a permanent cationic charge in every repeating unit, whereby the hydrophobicity was tuned through incorporation of different amino acids. Our results revealed that the amino acid alteration has a strong influence on antibacterial efficacy. Upon increasing the amino acid side-chain hydrophobicity, both the antibacterial activity (against broad spectrum of bacteria) and toxicity increased. However, the distinct feature of this class of polymers was their good activity against Acinetobacter baumannii-the top most critical pathogen according to WHO, which has created an alarming situation worldwide, causing the majority of infections in humans. A nontoxic (no hemolysis even at 1000 μg/mL) ACP including a glycine residue (ACP-1 (Gly)) showed very good activity (MIC = 8-16 μg/mL) against both drug-sensitive and drug-resistant strains of A. baumannii, including clinical isolates. This polymer not only was rapidly bactericidal against growing planktonic A. baumannii but also killed nondividing stationary-phase cells instantaneously (<2 min). Moreover, it eradicated the established biofilm formed by drug-resistant A. baumannii clinical isolates. No propensity for bacterial resistance development against this polymer was seen even after 14 continuous passages. Taken together, the results highlight that hydrophobicity modulation through incorporation of amino acids in cationic polymers will provide a significant opportunity in designing new ACPs with potent antibacterial activity and minimum toxicity toward mammalian cells. More importantly, the excellent anti-A. baumannii efficacy of the optimized lead polymer indicates its immense potential for being developed as therapeutic agent.
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Affiliation(s)
- Swagatam Barman
- Antimicrobial Research Laboratory, New Chemistry Unit and School of Advanced Materials , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur , Bengaluru 560064 , Karnataka , India
| | - Mohini Mohan Konai
- Antimicrobial Research Laboratory, New Chemistry Unit and School of Advanced Materials , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur , Bengaluru 560064 , Karnataka , India
| | - Sandip Samaddar
- Antimicrobial Research Laboratory, New Chemistry Unit and School of Advanced Materials , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur , Bengaluru 560064 , Karnataka , India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit and School of Advanced Materials , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur , Bengaluru 560064 , Karnataka , India
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24
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Machado CA, Smith IR, Savin DA. Self-Assembly of Oligo- and Polypeptide-Based Amphiphiles: Recent Advances and Future Possibilities. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02043] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Craig A. Machado
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Ian R. Smith
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Daniel A. Savin
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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25
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Datta LP, Dutta D, Chakraborty A, Das TK. Tyrosine based cationic acrylates as potent antimicrobial agents against shigellosis. Biomater Sci 2019; 7:2611-2622. [DOI: 10.1039/c8bm01588k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Design of tyrosine-based cationic polymers with antimicrobial activities.
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Affiliation(s)
- Lakshmi Priya Datta
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
| | - Debanjan Dutta
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
| | - Arpita Chakraborty
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
| | - Tapan Kumar Das
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
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26
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Mukherjee I, Ghosh A, Bhadury P, De P. Matrix assisted antibacterial activity of polymer conjugates with pendant antibiotics, and bioactive and biopassive moieties. J Mater Chem B 2019. [DOI: 10.1039/c9tb00328b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report the comparative antibacterial activity of a polymer–antibiotic conjugate with coupled bioactive (cationic) and biopassive (zwitterionic) functionalities against several biofilm and nonbiofilm forming bacterial species in both liquid and solid matrices.
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Affiliation(s)
| | - Anwesha Ghosh
- Integrative Taxonomy and Microbial Ecology Research Group
- Department of Biological Sciences
- India
| | - Punyasloke Bhadury
- Integrative Taxonomy and Microbial Ecology Research Group
- Department of Biological Sciences
- India
- Centre for Advanced Functional Materials
- Indian Institute of Science Education and Research Kolkata
| | - Priyadarsi De
- Polymer Research Centre
- Department of Chemical Sciences
- India
- Centre for Advanced Functional Materials
- Indian Institute of Science Education and Research Kolkata
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27
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Sinha S, Harioudh MK, Dewangan RP, Ng WJ, Ghosh JK, Bhattacharjya S. Cell-Selective Pore Forming Antimicrobial Peptides of the Prodomain of Human Furin: A Conserved Aromatic/Cationic Sequence Mapping, Membrane Disruption, and Atomic-Resolution Structure and Dynamics. ACS OMEGA 2018; 3:14650-14664. [PMID: 30555984 PMCID: PMC6289565 DOI: 10.1021/acsomega.8b01876] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 09/26/2018] [Indexed: 05/04/2023]
Abstract
Antimicrobial peptides are promising molecules in uprising consequences of drug-resistant bacteria. The prodomain of furin, a serine protease, expressed in all vertebrates including humans, is known to be important for physiological functions. Here, potent antimicrobial peptides were mapped by extensive analyses of overlapping peptide fragments of the prodomain of human furin. Two peptides, YR26 and YR23, were active against bacterial cells including MRSA-resistant Staphylococcus aureus and Staphylococcus epidermis 51625. Peptides were largely devoid of hemolytic and cytotoxic activity. Bacterial cell killing occurred as a result of the disruption of the permeability barrier of the lipopolysaccharide (LPS)-outer membrane and fragmentation of LPS into small micelles. Furthermore, antibacterial peptides specifically interacted with the negatively charged lipids causing membrane leakage and fusion. The YR26 peptide in sodium dodecyl sulfate micelles demonstrated a long-helix-turn-short-helix structure exhibiting restricted backbone motions. The cell-selective activity of the furin peptides and their unique mode of action on membranes have a significant potential for the development of therapeutics.
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Affiliation(s)
- Sheetal Sinha
- School
of Biological Sciences, Nanyang Technological
University, 60 Nanyang Drive, Singapore 637551
- Advanced
Environmental Biotechnology Centre, Nanyang Environment and Water
Research Institute, Nanyang Technological
University, 1 Cleantech
Loop, Singapore 637141
- Interdisciplinary Graduate School and Environmental Bio-Innovation Group
(EBiG), School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Munesh Kumar Harioudh
- Molecular
and Structural Biology Division, CSIR-Central
Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Rikeshwer P. Dewangan
- Molecular
and Structural Biology Division, CSIR-Central
Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Wun Jern Ng
- Interdisciplinary Graduate School and Environmental Bio-Innovation Group
(EBiG), School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Jimut Kanti Ghosh
- Molecular
and Structural Biology Division, CSIR-Central
Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Surajit Bhattacharjya
- School
of Biological Sciences, Nanyang Technological
University, 60 Nanyang Drive, Singapore 637551
- E-mail: . Fax: 65-6791-3856
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Kimura R, Shibata M, Koeda S, Miyagawa A, Yamamura H, Mizuno T. Development of New Antimicrobial Agents from Cationic PG-Surfactants Containing Oligo-Lys Peptides. Bioconjug Chem 2018; 29:4072-4082. [DOI: 10.1021/acs.bioconjchem.8b00693] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ryosuke Kimura
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Masahide Shibata
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Shuhei Koeda
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Atsushi Miyagawa
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Hatsuo Yamamura
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Toshihisa Mizuno
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
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29
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Carmona-Ribeiro AM. Self-Assembled Antimicrobial Nanomaterials. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E1408. [PMID: 29973521 PMCID: PMC6069395 DOI: 10.3390/ijerph15071408] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 12/17/2022]
Abstract
Nanotechnology came to stay improving the quality of human life by reducing environmental contamination of earth and water with pathogens. This review discusses how self-assembled antimicrobial nanomaterials can contribute to maintain humans, their water and their environment inside safe boundaries to human life even though some of these nanomaterials display an overt toxicity. At the core of their strategic use, the self-assembled antimicrobial nanomaterials exhibit optimal and biomimetic organization leading to activity at low doses of their toxic components. Antimicrobial bilayer fragments, bilayer-covered or multilayered nanoparticles, functionalized inorganic or organic polymeric materials, coatings and hydrogels disclose their potential for environmental and public health applications in this review.
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Affiliation(s)
- Ana Maria Carmona-Ribeiro
- Biocolloids Laboratory, Instituto de Química, Universidade de São Paulo; Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil.
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30
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Pereira JL, Vidal T, Gonçalves FJM, Gabriel RG, Costa R, Rasteiro MG. Is the aquatic toxicity of cationic polyelectrolytes predictable from selected physical properties? CHEMOSPHERE 2018; 202:145-153. [PMID: 29567612 DOI: 10.1016/j.chemosphere.2018.03.101] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 02/09/2018] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
Cationic acrylamide-based polyelectrolytes (cPAM) are widely used in industry. They can be designed for optimal performance in a specific application, but this opportunity means the environmental safety of all different alternatives needs to be addressed. Both the inclusion of environmental toxicity as a design variable and the establishment of relationships between structure and ecotoxicity are thus current challenges. The aim of this study was to assess whether structural variables such as molecular weight, charge density and the integrative intrinsic viscosity parameter can be used to predict the environmental safety of cPAMs, as well as if these relationships are stable when the biological models change. Five cPAMs comprising molecular weight and charge density gradients were tested against bacteria, microalgae, macrophytes and daphnids. While correlations were found between physical properties of cPAMs as expected, no clear ecotoxicity patterns could be identified. All cPAMs can be classified as harmful to aquatic life on the basis of the responses elicited in the most sensitive organisms, microalgae and daphnids. Unicellular bacteria were the least sensitive eco-receptors possibly due to cell wall structure or the protective effect of the ionic strength of the test medium. The macrophytes were also tolerant to cPAMs exposure, which may be related to exposure avoidance mechanisms. The order of toxicity of cPAMs depended on the test organism, preventing the establishment of stable structure-ecotoxicity relationships. Therefore, the study leads to the overall generalist recommendation of relying on the most sensitively responding test organisms when developing new (eco)safe-by-design cPAMs.
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Affiliation(s)
- Joana Luísa Pereira
- Department of Biology, CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Tânia Vidal
- Department of Biology, CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Fernando J M Gonçalves
- Department of Biology, CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Rita Garrido Gabriel
- Department of Chemical Engineering, University of Coimbra, CIEPQPF - Research Centre for Chemical Process Engineering and Forest Products, 3030-7909 Coimbra, Portugal
| | - Raquel Costa
- Department of Chemical Engineering, University of Coimbra, CIEPQPF - Research Centre for Chemical Process Engineering and Forest Products, 3030-7909 Coimbra, Portugal
| | - Maria Graça Rasteiro
- Department of Chemical Engineering, University of Coimbra, CIEPQPF - Research Centre for Chemical Process Engineering and Forest Products, 3030-7909 Coimbra, Portugal
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31
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Konai MM, Bhattacharjee B, Ghosh S, Haldar J. Recent Progress in Polymer Research to Tackle Infections and Antimicrobial Resistance. Biomacromolecules 2018; 19:1888-1917. [PMID: 29718664 DOI: 10.1021/acs.biomac.8b00458] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Global health is increasingly being threatened by the rapid emergence of drug-resistant microbes. The ability of these microbes to form biofilms has further exacerbated the scenario leading to notorious infections that are almost impossible to treat. For addressing this clinical threat, various antimicrobial polymers, polymer-based antimicrobial hydrogels and polymer-coated antimicrobial surfaces have been developed in the recent past. This review aims to discuss such polymer-based antimicrobial strategies with a focus on their current advancement in the field. Antimicrobial polymers, whose designs are inspired from antimicrobial peptides (AMPs), are described with an emphasis on structure-activity analysis. Additionally, antibiofilm activity and in vivo efficacy are delineated to elucidate the real potential of these antimicrobial polymers as possible therapeutics. Antimicrobial hydrogels, prepared from either inherently antimicrobial polymers or biocide-loaded into polymer-derived hydrogel matrix, are elaborated followed by various strategies to engineer polymer-coated antimicrobial surfaces. In the end, the current challenges are accentuated along with future directions for further expansion of the field toward tackling infections and antimicrobial resistance.
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Affiliation(s)
- Mohini Mohan Konai
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Brinta Bhattacharjee
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Sreyan Ghosh
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
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32
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Velivelli SLS, Islam KT, Hobson E, Shah DM. Modes of Action of a Bi-domain Plant Defensin MtDef5 Against a Bacterial Pathogen Xanthomonas campestris. Front Microbiol 2018; 9:934. [PMID: 29867843 PMCID: PMC5964164 DOI: 10.3389/fmicb.2018.00934] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 04/23/2018] [Indexed: 11/24/2022] Open
Abstract
Defensins are small cysteine-rich endogenous host defense peptides expressed in all higher plants. They are thought to be important players in the defense arsenal of plants against fungal and oomycete pathogens. However, little is known regarding the antibacterial activity of these peptides. The genome of the model legume Medicago truncatula contains 63 genes each encoding a defensin with a tetradisulfide array. A unique bi-domain defensin, designated MtDef5, was recently characterized for its potent broad-spectrum antifungal activity. This 107-amino acid defensin contains two domains, 50 amino acids each, linked by a short peptide APKKVEP. Here, we characterize antibacterial activity of this defensin and its two domains, MtDef5A and MtDef5B, against two economically important plant bacterial pathogens, Gram-negative Xanthomonas campestris and Gram-positive Clavibacter michiganensis. MtDef5 inhibits the growth of X. campestris, but not C. michiganensis, at micromolar concentrations. MtDef5B, but not MtDef5A, exhibits more potent antibacterial activity than its parent MtDef5. MtDef5 and each of its two domains induce distinct morphological changes and cell death in X. campestris. They permeabilize the bacterial plasma membrane and translocate across membranes to the cytoplasm. They bind to negatively charged DNA indicating these peptides may kill bacterial cells by inhibiting DNA synthesis and/or transcription. The cationic amino acids present in the two γ-core motifs of MtDef5 that were previously shown to be important for its antifungal activity are also important for its antibacterial activity. MtDef5 and its more potent single domain MtDef5B have the potential to be deployed as antibacterial agents for control of a Xanthomonas wilt disease in transgenic crops.
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Affiliation(s)
| | - Kazi T Islam
- Donald Danforth Plant Science Center, St. Louis, MO, United States
| | - Eric Hobson
- Donald Danforth Plant Science Center, St. Louis, MO, United States.,Department of Biology, Jackson State University, Jackson, MS, United States
| | - Dilip M Shah
- Donald Danforth Plant Science Center, St. Louis, MO, United States
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33
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Mohanapriya S, Raj V. Tuning biological properties of poly (vinyl alcohol) with amino acids and studying its influence on osteoblastic cell adhesion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018. [DOI: 10.1016/j.msec.2018.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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34
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Mukherjee I, Ghosh A, Bhadury P, De P. Leucine-Based Polymer Architecture-Induced Antimicrobial Properties and Bacterial Cell Morphology Switching. ACS OMEGA 2018; 3:769-780. [PMID: 30023789 PMCID: PMC6044967 DOI: 10.1021/acsomega.7b01674] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/04/2018] [Indexed: 05/06/2023]
Abstract
To evaluate the comparative antibacterial activity of leucine-based cationic polymers having linear, hyperbranched, and star architectures containing both hydrophilic and hydrophobic segments against Gram-negative bacterium, Escherichia coli (E. coli), herein we performed zone of inhibition study, minimum inhibitory concentration (MIC) calculation, and bacterial growth experiment. The highest antibacterial activity in terms of the MIC value was found in hyperbranched and star architectures because of the greater extent of cationic and hydrophobic functionality, enhancing cell wall penetration ability compared to that of the linear polymer. The absence of the bacterial regrowth stage in the growth curve exhibited the highest bactericidal capacity of star polymers, when untreated cells (control) already reached to the stationary phase, whereas the bacterial regrowth stage with a delayed lag phase was critically observed for linear and hyperbranched architectures displaying lower bactericidal efficacy. Coagulation of E. coli cells, switching of cell morphology from rod to sphere, and lengthening due to stacking in an antimicrobial polymer-treated environment at the bacterial regrowth stage in liquid media were visualized critically by field emission scanning electron microscopy and confocal fluorescence microscopy instruments in the presence of 4',6-diamidino-2-phenylindole stain.
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Affiliation(s)
- Ishita Mukherjee
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Anwesha Ghosh
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Punyasloke Bhadury
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
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35
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Konai MM, Samaddar S, Bocchinfuso G, Santucci V, Stella L, Haldar J. Selectively targeting bacteria by tuning the molecular design of membrane-active peptidomimetic amphiphiles. Chem Commun (Camb) 2018; 54:4943-4946. [DOI: 10.1039/c8cc01926f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report the design of membrane-active peptidomimetic molecules with a tunable arrangement of hydrophobic and polar groups.
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Affiliation(s)
- Mohini M. Konai
- Antimicrobial Research Laboratory
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
| | - Sandip Samaddar
- Antimicrobial Research Laboratory
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
| | | | - Valerio Santucci
- Department of Chemical Science and Technologies
- University of Rome Tor Vergata
- Rome
- Italy
| | - Lorenzo Stella
- Department of Chemical Science and Technologies
- University of Rome Tor Vergata
- Rome
- Italy
| | - Jayanta Haldar
- Antimicrobial Research Laboratory
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
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