1
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Khamrui R, Mukherjee A, Ghosh S. Hydrogen-Bonding-Regulated Morphology Control and the Impact on the Antibacterial Activity of Cationic π-Amphiphiles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13870-13878. [PMID: 38917360 DOI: 10.1021/acs.langmuir.4c00889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
This manuscript describes the synthesis, self-assembly, and antibacterial properties of naphthalene-diimide (NDI)-derived cationic π-amphiphiles. Three such asymmetric NDI derivatives with a nonionic hydrophilic wedge and a guanidine group in the two opposite sides of the NDI chromophore were considered. They differ by a single functional group (hydrazide, amide, and ester for NDI-1, NDI-2, and NDI-3, respectively), located in the linker between the NDI and the hydrophilic wedge. For NDI-1, the H-bonding among the hydrazides regulated unilateral stacking and a preferential direction of curvature of the resulting supramolecular polymer, producing an unsymmetric polymersome with the guanidinium groups displayed at the outer surface. NDI-3, lacking any H-bonding group, exhibits π-stacking without any preferential orientation and generates spherical particles with a relatively poor display of the guanidium groups. In sharp contrast to NDI-1, NDI-2 exhibits an entangled one-dimensional (1D) fibrillar morphology, indicating the prominent role of the H-bonding motif of the amide group and flexibility of the linker. The antibacterial activity of these assemblies was probed against Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). NDI-1 showed the most promising antibacterial activity with a minimum inhibitory concentration (MIC) of ∼7.8 μg/mL against S. aureus and moderate activity (MIC ∼ 125 μg/mL) against E. coli. In sharp contrast, NDI-3 did not show any significant activity against the bacteria, suggesting a strong impact of the H-bonding-regulated directional assembly. NDI-2, forming a fibrillar network, showed moderate activity against S. aureus and negligible activity against E. coli, highlighting a significant impact of the morphology. All of these three molecules were found to be compatible with mammalian cells from the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) and hemolysis assay. The mechanistic investigation by membrane polarization assay, live/dead fluorescence assay, and microscopy studies confirmed the membrane disruption mechanism of cell killing for the lead candidate NDI-1.
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Affiliation(s)
- Rajesh Khamrui
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Arunima Mukherjee
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata 700032, 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 700032, India
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2
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Boivin L, Harvey PD. Virus Management Using Metal-Organic Framework-Based Technologies. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36892577 DOI: 10.1021/acsami.3c00922] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The eradication and isolation of viruses are two concurrent approaches to protect ourselves from viral infections and diseases. The quite versatile porous materials called metal-organic frameworks (MOFs), have recently emerged as efficient nanosized tools to manage viruses, and several strategies to accomplish these tasks have been developed. This review describes these strategies employing nanoscale MOFs against SARS-CoV-2, HIV-1, tobacco mosaic virus, etc., which include the sequestration by host-guest penetration inside pores, mineralization, design of a physical barrier, controlled delivery of organic and inorganic antiviral drugs or bioinhibitors, photosensitization of singlet oxygen, and direct contact with inherently cytotoxic MOFs.
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Affiliation(s)
- Léo Boivin
- Département de Chimie, Université de Sherbrooke, Québec J1K 2R1, Canada
| | - Pierre D Harvey
- Département de Chimie, Université de Sherbrooke, Québec J1K 2R1, Canada
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3
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Zhou W, Shi G, Zhao P, Zhang G, Yang P, Li B, Li B, Wan X, Zheng Y. Dynamic helical cationic polyacetylenes for fast and highly efficient killing of bacteria. Acta Biomater 2023; 161:134-143. [PMID: 36804537 DOI: 10.1016/j.actbio.2023.02.017] [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: 09/27/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/19/2023]
Abstract
The antimicrobial activity of native antimicrobial peptides (AMPs) is often attributed to their helical structure, but the effectiveness of synthetic mimics with dynamic helical conformations, such as antimicrobial cationic polymers (ACPs), has not been well studied. Herein we demonstrate the antimicrobial activity of pyrrolidinium-pendant polyacetylenes (PAs) with dynamic helical conformations. The PAs exhibit fast and efficient antimicrobial activity against a wide range of pathogens, with low toxicity to mammalian cells and minimal risk of antibiotic resistance. In addition, the full-thickness wound infection model in mice has demonstrated the favorable biocompatibility and effective in vivo antibacterial capabilities of these PAs. Our data suggest that the dynamic helical structure of these PAs allows them to adapt and form pores in the bacterial membrane upon interaction, leading to their potent antimicrobial activity. This work investigated the antibacterial mechanism of dynamic helical ACPs, which provides valuable guidance for the rational design of high-performance antimicrobial agents. STATEMENT OF SIGNIFICANCE: Our study represents a significant contribution to the literature on antimicrobial cationic polymers (ACPs) as alternatives to antibiotics. Through a systematic investigation of the role of dynamic helical conformation in polyacetylenes (PAs) and the use of PAs with adaptive structure for the first time, we have provided valuable insights into the bacterial membrane action and killing mechanisms of these polymers. The results of our study, including fast killing rates and minimum inhibitory concentrations as low as 4-16 µg/mL against a broad range of pathogens and strong in vivo antibacterial activity, demonstrate the potential of these ACPs as high-performance antimicrobials. Our findings may guide the design of future ACPs with enhanced antimicrobial activity.
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Affiliation(s)
- Wei Zhou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Ge Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Peng Zhao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Gai Zhang
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Peilang Yang
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Bohan Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Bowen Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yijun Zheng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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4
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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
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5
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Ayalew H, Ali SA, She JW, Yu HH. Biguanide- and Oligo(Ethylene Glycol)-Functionalized Poly(3,4-Ethylenedioxythiophene): Electroactive, Antimicrobial, and Antifouling Surface Coatings. Front Chem 2022; 10:955260. [PMID: 35991598 PMCID: PMC9389217 DOI: 10.3389/fchem.2022.955260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
The challenge of infectious diseases remains a critical concern to the global public health. Recently, it is common to encounter touch-screen electronic devices everywhere to access services. The surface of such devices may easily get contaminated by an infected person, which leads to transmission of infectious diseases between individuals. Moreover, the challenge is complicated by surgical infections from implantable biomedical devices. Such problems can be minimized by the use of long-term active antimicrobial surface coatings. We present herein the preparation of novel electroactive antimicrobial surface coatings through the covalent attachment of the biguanide moiety onto 3,4-ethylenedioxythiophene (EDOT). The biguanide-functionalized EDOT (EDOT-BG) was thus electropolymerized on different substrates to give the corresponding poly(EDOT-BG) polymer. The poly(EDOT-BG) polymer showed an excellent bactericidal efficiency (∼92% bacterial death) and excellent biocompatibility with mammalian cells. Furthermore, the antimicrobial EDOT-BG was electro-copolymerized with antifouling tetra ethylene glycol functionalized-EDOT (EDOT-EG4) to give a multifunctional poly(EDOT-EG4-co-EDOT-BG) copolymer. The poly(EDOT-EG4-co-EDOT-BG) copolymer showed excellent resistance to protein adsorption and mammalian/bacterial cell binding without losing its bactericidal efficiency. These novel materials can be applied to domestic and bioelectronic devices to minimize infectious diseases.
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Affiliation(s)
- Hailemichael Ayalew
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Taipei, Taiwan
| | - Syed Atif Ali
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Taipei, Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST), Academia Sinica, Taipei, Taiwan
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Jia-Wei She
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Taipei, Taiwan
| | - Hsiao-hua Yu
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Taipei, Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST), Academia Sinica, Taipei, Taiwan
- *Correspondence: Hsiao-hua Yu,
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6
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Wang Q, Huang L, Zheng J, Zhang Q, Qin G, Li S, Zhang S. Design, synthesis and characterization of anion exchange membranes containing guanidinium salts with ultrahigh dimensional stability. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Zhu Y, Xu P, Zhang X, Wu D. Emerging porous organic polymers for biomedical applications. Chem Soc Rev 2022; 51:1377-1414. [DOI: 10.1039/d1cs00871d] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review summarizes and discusses the recent progress in porous organic polymers for diverse biomedical applications such as drug delivery, biomacromolecule immobilization, phototherapy, biosensing, bioimaging, and antibacterial applications.
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Affiliation(s)
- Youlong Zhu
- Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Peiwen Xu
- Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Xingcai Zhang
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
- School of Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA
| | - Dingcai Wu
- Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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8
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Zhao Y, Zhang Z, Pan Z, Liu Y. Advanced bioactive nanomaterials for biomedical applications. EXPLORATION (BEIJING, CHINA) 2021; 1:20210089. [PMID: 37323697 PMCID: PMC10191050 DOI: 10.1002/exp.20210089] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
Bioactive materials are a kind of materials with unique bioactivities, which can change the cellular behaviors and elicit biological responses from living tissues. Bioactive materials came into the spotlight in the late 1960s when the researchers found that the materials such as bioglass could react with surrounding bone tissue for bone regeneration. In the following decades, advances in nanotechnology brought the new development opportunities to bioactive nanomaterials. Bioactive nanomaterials are not a simple miniaturization of macroscopic materials. They exhibit unique bioactivities due to their nanoscale size effect, high specific surface area, and precise nanostructure, which can significantly influence the interactions with biological systems. Nowadays, bioactive nanomaterials have represented an important and exciting area of research. Current and future applications ensure that bioactive nanomaterials have a high academic and clinical importance. This review summaries the recent advances in the field of bioactive nanomaterials, and evaluate the influence factors of bioactivities. Then, a range of bioactive nanomaterials and their potential biomedical applications are discussed. Furthermore, the limitations, challenges, and future opportunities of bioactive nanomaterials are also discussed.
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Affiliation(s)
- Yu Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of EducationState Key Laboratory of Medicinal Chemical BiologyFrontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjinP. R. China
| | - Zhanzhan Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of EducationState Key Laboratory of Medicinal Chemical BiologyFrontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjinP. R. China
| | - Zheng Pan
- Key Laboratory of Functional Polymer Materials of Ministry of EducationState Key Laboratory of Medicinal Chemical BiologyFrontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjinP. R. China
| | - Yang Liu
- Key Laboratory of Functional Polymer Materials of Ministry of EducationState Key Laboratory of Medicinal Chemical BiologyFrontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjinP. R. China
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9
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De Silva EH, Novak BM. Temperature induced helical contraction and expansion in branched polycarbodiimides and their solvent vapor sensing properties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1978849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Enosha Harshani De Silva
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas, USA
| | - Bruce M. Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas, USA
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10
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De Silva EH, Salamat N, Zhang L, Zheng J, Novak BM. Water-soluble polycarbodiimides and their cytotoxic and antifungal properties. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:2369-2386. [PMID: 34428379 DOI: 10.1080/09205063.2021.1971821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We have successfully synthesized water-soluble neutral and polyelectrolyte helical polycarbodiimides and studied their biological properties. These polymers were prepared by decorating carbodiimide backbones with nonionic, hydrophilic functional groups such as dimethylamine, piperazine, and morpholine. Additionally, the 3° amines present in these functional groups were quaternized using methyl iodide as the alkylating agent to produce their ionic analogs. Polycarbodiimides were chosen as the base polymer used because of their facile chemical modification, pH tolerance in terms of both their helical conformations and degradation behaviors, and tunable helical inversion barriers. Hydrophilic side groups, such as morpholine, dimethylamine, and piperazine, can be used to balance the amphiphilic architecture of the polycarbodiimides along with lipophilic groups, such as alkyl side chains. A chiral R or S BINOL Ti(IV) isopropoxide catalyst was used to control the handedness of the polycarbodiimide helices in these studies. These ionic and neutral polycarbodiimides were subsequently studied for potential antimicrobial and cytotoxic properties. Poly[N-methyl-N'-2-morpholinoethylcarbodiimide], as an example, exhibited significant antifungal properties against Candida albicans. Also, Poly[N-methyl-N'-2-morpholinoethylcarbodiimide] showed significant inhibition of biofilm formation. This suggests that the polymer is a promising candidate for antifungal biomedical applications. Measuring cytotoxicity against urinary bladder cancer cells, poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide] (S-cat) and poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide]-MeI (S-cat) showed significantly low IC50 values. The IC50 values of poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide] (S-cat) and Poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide]-MeI (S-cat) are 3.50 μM and 1.27 μM, respectively. The significantly low cancer cell growth inhibition concentration implies the highest cytotoxicity of the polymers, suggesting potential applications as cancer therapeutics. These results also showed that the functionalization and chirality of polycarbodiimides modulate their anticancer and antifungal activity.
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Affiliation(s)
- Enosha Harshani De Silva
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Narges Salamat
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Li Zhang
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Jie Zheng
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Bruce M Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
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11
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Li R, Yang G, Wang Y, Liu L, Wang Q, Wang G, Ouyang X. Synthesis of antibacterial polyether biguanide curing agent and its cured antibacterial epoxy resin. Des Monomers Polym 2021; 24:63-72. [PMID: 33795960 PMCID: PMC7993382 DOI: 10.1080/15685551.2021.1900025] [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: 12/21/2020] [Accepted: 03/04/2021] [Indexed: 12/05/2022] Open
Abstract
At present, bacteria continue to threaten human health, and the resistance of bacteria to antibiotics continues to increase, so the development of new antibacterial agents and antibacterial materials is increasingly important to ensure human health. In this paper, three polyether biguanide compounds with high antibacterial properties were synthesized by reacting polyetheramine T403 with o-tolylbiguanide, m-tolylbiguanide and p-tolylbiguanide (o-TTB, m-TTB and p-TTB), respectively. The antimicrobial performance of polyether biguanide against E. coli and S. aureus was evaluated using a minimum inhibitory concentration method, and the results showed that the synthesized polyether biguanide exhibited efficient and broad-spectrum antimicrobial effects. Among them, o-tolyl biguanide derivative o-TTB showed the best antimicrobial performance, with minimum inhibitory concentrations of 20 and 15 μg/mL against E. coli and S. aureus, respectively. Then, epoxy resin E51 was cured using the obtained TTB as a curing agent to prepare an epoxy resin with antibacterial properties. The inhibition of the growth of S. aureus by the cured o-TTB/E51 resin was investigated by incubating the cured epoxy resin with bacteria, and the results showed that the cured resin had a significant inhibitory effect on the growth of bacteria. The non-isothermal curing kinetics of the o-TTB/E51 system were investigated by differential scanning calorimetry (DSC) to determine the optimized curing reaction temperature, curing kinetic parameters and curing kinetics equation.
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Affiliation(s)
- Rui Li
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Guoxing Yang
- Daqing Petrochemical Research Center, Petrochemical Research Institute, China National Petroleum Corporation, Daqing, China
| | - Yudan Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Lijia Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Qiang Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Guan Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China
| | - Xiao Ouyang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
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12
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Li J, Sun W, Yang Z, Gao G, Ran HH, Xu KF, Duan QY, Liu X, Wu FG. Rational Design of Self-Assembled Cationic Porphyrin-Based Nanoparticles for Efficient Photodynamic Inactivation of Bacteria. ACS APPLIED MATERIALS & INTERFACES 2020; 12:54378-54386. [PMID: 33226224 DOI: 10.1021/acsami.0c15244] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bacterial infection has become an urgent health problem in the world. Especially, the evolving resistance of bacteria to antibiotics makes the issue more challenging, and thus new treatments to fight these infections are needed. Antibacterial photodynamic therapy (aPDT) is recognized as a novel and promising method to inactivate a wide range of bacteria with few possibilities to develop drug resistance. However, the photosensitizers (PSs) are not effective against Gram-negative bacteria in many cases. Herein, we use conjugated meso-tetra(4-carboxyphenyl)porphine (TCPP) and triaminoguanidinium chloride (TG) to construct self-assembled cationic TCPP-TG nanoparticles (NPs) for efficient bacterial inactivation under visible light illumination. The TCPP-TG NPs can rapidly adhere to both Gram-negative and Gram-positive bacteria and display promoted singlet oxygen (1O2) generation compared with TCPP under light irradiation. The high local positive charge density of TCPP-TG NPs facilitates the interaction between the NPs and bacteria. Consequently, the TCPP-TG NPs produce an elevated concentration of local 1O2 under light irradiation, resulting in an extraordinarily high antibacterial efficiency (99.9999% inactivation of the representative bacteria within 4 min). Furthermore, the TCPP-TG NPs show excellent water dispersity and stability during 4 months of storage. Therefore, the rationally designed TCPP-TG NPs are a promising antibacterial agent for effective aPDT.
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Affiliation(s)
- Junying Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Wei Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Zihuayuan Yang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Ge Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Huan-Huan Ran
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Ke-Fei Xu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Qiu-Yi Duan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Xiaoyang Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China
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13
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Corrêa RCG, Heleno SA, Alves MJ, Ferreira ICFR. Bacterial Resistance: Antibiotics of Last Generation used in Clinical Practice and the Arise of Natural Products as New Therapeutic Alternatives. Curr Pharm Des 2020; 26:815-837. [PMID: 32091328 DOI: 10.2174/1381612826666200224105153] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/29/2020] [Indexed: 01/13/2023]
Abstract
Bacterial resistance to therapeutical drugs has been a serious issue over the last decades. In fact, the quick development of resistance mechanisms by the microorganisms has been fatal for millions of people around the world, turning into a public health issue. The major cause of the resistance mechanisms is the overuse of antimicrobials. European countries try to implement mechanisms to overcome antimicrobial resistance in the community through the rational use of antimicrobials. The scientific community has been exhaustively dedicated to the discovering of new, safer and efficient drugs, being the exploitation of natural resources, mainly plants and fungi, considered as a hot topic in the field of antimicrobial agents. Innumerous reports have already shown the promising capacity of natural products or molecules extracted from these natural resources, to act as bacteriostatic and bactericidal agents. More importantly, these natural agents present significantly lower harmful effects. Bearing that in mind, this review aims at giving a contribution to the knowledge about the synthetic antibiotics of the last generation. Moreover, it is intended to provide information about the last advances regarding the discovery of new antimicrobial agents. Thus, a compilation of the chemical characteristics, efficiency, harmful outcomes and resistance mechanisms developed by the microorganisms can be consulted in the following sections together with a critical discussion, in line with the recent approaches. Furthermore, modern strategies for the prospection of novel anti-infective compounds for tackling resistant bacteria have been considered as also a current synopsis of plants and mushrooms with relevant antimicrobial potentials.
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Affiliation(s)
- Rúbia C G Corrêa
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, Braganca, Portugal.,Program of Master in Science, Technology and Food Safety, Cesumar Institute of Science Technology and Innovation (ICETI), University Center of Maringa (UNICESUMAR), Maringa, Parana, Brazil
| | - Sandrina A Heleno
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, Braganca, Portugal
| | - Maria J Alves
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, Braganca, Portugal
| | - Isabel C F R Ferreira
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, Braganca, Portugal
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Hussain MW, Bhardwaj V, Giri A, Chande A, Patra A. Multifunctional ionic porous frameworks for CO 2 conversion and combating microbes. Chem Sci 2020; 11:7910-7920. [PMID: 34123075 PMCID: PMC8163429 DOI: 10.1039/d0sc01658f] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 07/01/2020] [Indexed: 01/14/2023] Open
Abstract
Porous organic frameworks (POFs) with a heteroatom rich ionic backbone have emerged as advanced materials for catalysis, molecular separation, and antimicrobial applications. The loading of metal ions further enhances Lewis acidity, augmenting the activity associated with such frameworks. Metal-loaded ionic POFs, however, often suffer from physicochemical instability, thereby limiting their scope for diverse applications. Herein, we report the fabrication of triaminoguanidinium-based ionic POFs through Schiff base condensation in a cost-effective and scalable manner. The resultant N-rich ionic frameworks facilitate selective CO2 uptake and afford high metal (Zn(ii): 47.2%) loading capacity. Owing to the ionic guanidinium core and ZnO infused mesoporous frameworks, Zn/POFs showed pronounced catalytic activity in the cycloaddition of CO2 and epoxides into cyclic organic carbonates under solvent-free conditions with high catalyst recyclability. The synergistic effect of infused ZnO and cationic triaminoguanidinium frameworks in Zn/POFs led to robust antibacterial (Gram-positive, Staphylococcus aureus and Gram-negative, Escherichia coli) and antiviral activity targeting HIV-1 and VSV-G enveloped lentiviral particles. We thus present triaminoguanidinium-based POFs and Zn/POFs as a new class of multifunctional materials for environmental remediation and biomedical applications.
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Affiliation(s)
- Md Waseem Hussain
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Vipin Bhardwaj
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Arkaprabha Giri
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Ajit Chande
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Abhijit Patra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
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15
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Cho CA, Liang C, Perera J, Brimble MA, Swift S, Jin J. Guanidinylated Amphiphilic Polycarbonates with Enhanced Antimicrobial Activity by Extending the Length of the Spacer Arm and Micelle Self-Assembly. Macromol Biosci 2020; 20:e2000065. [PMID: 32459065 DOI: 10.1002/mabi.202000065] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/01/2020] [Indexed: 01/23/2023]
Abstract
Nine guanidinylated amphiphilic polycarbonates are rationally designed and synthesized. Each polymer has the same biodegradable backbone but different side groups. The influence of the hydrophobic/hydrophilic effect on antimicrobial activities and cytotoxicity is systematically investigated. The results verify that tuning the length of the spacer arm between the cationic guanidine group and the polycarbonate backbone is an efficient design strategy to alter the hydrophobic/hydrophilic balance without changing the cationic charge density. A spacer arm of six methylene units (CH2 )6 shows the best antimicrobial activity (minimum inhibitory concentration, MIC = 40 µg mL-1 against Escherichia coli, MIC = 20 µg mL-1 against Staphylococcus aureus, MIC = 40 µg mL-1 against Candida albicans) with low hemolytic activity (HC50 > 2560 µg mL-1 ). Furthermore, the guanidinylated polycarbonates exhibit the ability to self-assemble and present micelle-like nanostructure due to their intrinsic amphiphilic macromolecular structure. Transmission electron microscopy and dynamic light scattering measurements confirm polymer micelle formation in aqueous solution with sizes ranging from 82 to 288 nm.
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Affiliation(s)
- Chloe A Cho
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Chao Liang
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Janesha Perera
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, 1142, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Simon Swift
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, 1142, New Zealand
| | - Jianyong Jin
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
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16
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Verma NK, Mondal D, Bera S. Pharmacological and Cellular Significance of Triazole-Surrogated Compounds. CURR ORG CHEM 2020. [DOI: 10.2174/1385272823666191021114906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
:
Heterocyclic compounds have been at the hierarchy position in academia, and
industrial arena, particularly the compounds containing triazole-core are found to be potent
with a broad range of biological activities. The resistance of triazole ring towards
chemical (acid and base) hydrolysis, oxidative and reductive reaction conditions, metabolic
degradation and its higher aromatic stabilization energy makes it a better heterocyclic
core as therapeutic agents. These triazole-linked compounds are used for clinical purposes
for antifungal, anti-mycobacterium, anticancer, anti-migraine and antidepressant
drugs. Triazole scaffolds are also found to act as a spacer for the sake of covalent attachment
of the high molecular weight bio-macromolecules with an experimental building
blocks to explore structure-function relationships. Herein, several methods and strategies
for the synthesis of compounds with 1,2,3-triazole moiety exploring Hüisgen, Meldal and Sharpless 1,3-dipolar
cycloaddition reaction between azide and alkyne derivatives have been deliberated for a series of representative
compounds. Moreover, this review article highlights in-depth applications of the [3+2]-cycloaddition reaction
for the advances of triazole-containing antibacterial as well as metabolic labelling agents for the in vitro and in
vivo studies on cellular level.
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Affiliation(s)
- Naimish Kumar Verma
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar-382030, India
| | - Dhananjoy Mondal
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar-382030, India
| | - Smritilekha Bera
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar-382030, India
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17
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Chen S, Li C, Hou T, Cai Y, Liang L, Chen L, Li M. Polyhexamethylene guanidine functionalized chitosan nanofiber membrane with superior adsorption and antibacterial performances. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.104379] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Kuroki A, Kengmo Tchoupa A, Hartlieb M, Peltier R, Locock KES, Unnikrishnan M, Perrier S. Targeting intracellular, multi-drug resistant Staphylococcus aureus with guanidinium polymers by elucidating the structure-activity relationship. Biomaterials 2019; 217:119249. [PMID: 31279102 DOI: 10.1016/j.biomaterials.2019.119249] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/20/2019] [Accepted: 06/05/2019] [Indexed: 11/29/2022]
Abstract
Intracellular persistence of bacteria represents a clinical challenge as bacteria can thrive in an environment protected from antibiotics and immune responses. Novel targeting strategies are critical in tackling antibiotic resistant infections. Synthetic antimicrobial peptides (SAMPs) are interesting candidates as they exhibit a very high antimicrobial activity. We first compared the activity of a library of ammonium and guanidinium polymers with different sequences (statistical, tetrablock and diblock) synthesized by RAFT polymerization against methicillin-resistant S. aureus (MRSA) and methicillin-sensitive strains (MSSA). As the guanidinium SAMPs were the most potent, they were used to treat intracellular S. aureus in keratinocytes. The diblock structure was the most active, reducing the amount of intracellular MSSA and MRSA by two-fold. We present here a potential treatment for intracellular, multi-drug resistant bacteria, using a simple and scalable strategy.
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Affiliation(s)
- Agnès Kuroki
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Matthias Hartlieb
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Raoul Peltier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Katherine E S Locock
- CSIRO Manufacturing, Clayton, Victoria, 3168, Australia; Department of Chemical and Biomolecular Engineering, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | | | - Sébastien Perrier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK; Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK; Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria, 3052, Australia.
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19
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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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20
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Siriwardane DA, Kulikov O, Batchelor BL, Liu Z, Cue JM, Nielsen SO, Novak BM. UV- and Thermo-Controllable Azobenzene-Decorated Polycarbodiimide Molecular Springs. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00679] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dumindika A. Siriwardane
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Oleg Kulikov
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, United States
| | - Benjamin L. Batchelor
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Zhiwei Liu
- Department of Chemistry and Biochemistry, University of the Sciences, 600 South 43rd Street, Philadelphia, Pennsylvania 19104, United States
| | - John Michael Cue
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Steven O. Nielsen
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
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21
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Kulikov OV, Siriwardane DA, Budhathoki-Uprety J, McCandless GT, Mahmood SF, Novak BM. The secondary structures of PEG-functionalized random copolymers derived from (R)- and (S)- families of alkyne polycarbodiimides. Polym Chem 2018. [DOI: 10.1039/c8py00282g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Macromolecular micelles: a hydrophobic polyamidine backbone surrounded by hydrophilic PEG chains.
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Affiliation(s)
- Oleg V. Kulikov
- Department of Chemistry
- Massachusetts Institute of Technology
- Cambridge
- USA
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22
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Hae Cho CA, Liang C, Perera J, Liu J, Varnava KG, Sarojini V, Cooney RP, McGillivray DJ, Brimble MA, Swift S, Jin J. Molecular Weight and Charge Density Effects of Guanidinylated Biodegradable Polycarbonates on Antimicrobial Activity and Selectivity. Biomacromolecules 2017; 19:1389-1401. [DOI: 10.1021/acs.biomac.7b01245] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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23
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Lee HS, Myers C, Zaidel L, Nalam PC, Caporizzo MA, A Daep C, Eckmann DM, Masters JG, Composto RJ. Competitive Adsorption of Polyelectrolytes onto and into Pellicle-Coated Hydroxyapatite Investigated by QCM-D and Force Spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13079-13091. [PMID: 28332813 DOI: 10.1021/acsami.7b02774] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A current effort in preventive dentistry is to inhibit surface attachment of bacteria using antibacterial polymer coatings on the tooth surface. For the antibacterial coatings, the physisorption of anionic and cationic polymers directly onto hydroxyapatite (HA) and saliva-treated HA surfaces was studied using quartz crystal microbalance, force spectroscopy, and atomic force microscopy. First, single species adsorption is shown to be stronger on HA surfaces than on silicon oxide surfaces for all polymers (i.e., Gantrez, sodium hyaluronate (NaHa), and poly(allylamine-co-allylguanidinium) (PAA-G75)). It is observed through pH dependence of Gantrez, NaHa, and PAA-G75 adsorption on HA surfaces that anionic polymers swell at high pH and collapse at low pH, whereas cationic polymers behave in the opposite fashion. Thicknesses of Gantrez, NaHa, and PAA-G75 are 52 nm (46 nm), 35 nm (11 nm), and 6 nm (54 nm) at pH 7 (3.5), respectively. Second, absorption of charged polymer is followed by absorption of the oppositely charged polymer. Upon exposure of the anionic polymer layers, Gantrez and NaHa, to the cationic polymer, PAA-G75, films collapse from 52 to 8 nm and 35 to 11 nm, respectively. This decrease in film thickness is attributed to the electrostatic cross-linking between anionic and cationic polymers. Third, for HA surfaces pretreated with artificial saliva (AS), the total thickness decreases from 25 to 16 nm upon exposure to PAA-G75. Force spectroscopy is used to further investigate the PAA-G75/AS coating. The results show that the interaction between a negatively charged colloidal bead and the AS surface is strongly repulsive, whereas PAA-G75/AS is attractive but varies across the surface. Additionally, AFM studies show that AS/HA is smooth with a RMS roughness of 1.7 nm, and PAA-G75-treated AS/HA is rough (RMS roughness of 5.4 nm) with patches of polymer distributed across the surface with an underlying coating. The high roughness of PAA-G75 treated AS/HA is attributed to the strong adsorption of the relatively small PAA-G75 onto the heterogeneously distributed negatively charged AS surface. In addition, uptake of PAA-G75 by pellicle layer (saliva-treated HA surface) is observed, and the adsorbed amount of PAA-G75 on/into pellicle layer is ∼2 times more than that on/into AS layer. These studies show that polymer adsorption onto HA and saliva-coated HA depends strongly on the polymer type and size and that there is an electrostatic interaction between polymer and saliva and/or oppositely charged polymers that stabilizes the coatings on HA. Lastly, assessing the viability of the adherent bacteria collected from the PAA-G75-coated surfaces showed a significant reduction (∼93%) in bacterial viability when compared to bacteria collected from untreated and Gantrez-coated HA. These results suggest the potential antimicrobial activity of PAA-G75.
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Affiliation(s)
| | - Carl Myers
- Colgate-Palmolive Company, Piscataway, New Jersey 08855, United States
| | - Lynette Zaidel
- Colgate-Palmolive Company, Piscataway, New Jersey 08855, United States
| | | | | | - Carlo A Daep
- Colgate-Palmolive Company, Piscataway, New Jersey 08855, United States
| | | | - James G Masters
- Colgate-Palmolive Company, Piscataway, New Jersey 08855, United States
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24
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Sun X, Ji J, Zhang W, Wang G, Zhen Z, Wang P. Guanidine-based polymeric microspheres with a nonleaching, antibacterial performance. J Appl Polym Sci 2017. [DOI: 10.1002/app.44821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoxiao Sun
- National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Junhui Ji
- National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Wei Zhang
- National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Gexia Wang
- National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Zhichao Zhen
- National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Pingli Wang
- National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences; Beijing 100190 People's Republic of China
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25
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Peng K, Zou T, Ding W, Wang R, Guo J, Round JJ, Tu W, Liu C, Hu J. Development of contact-killing non-leaching antimicrobial guanidyl-functionalized polymers via click chemistry. RSC Adv 2017. [DOI: 10.1039/c7ra02706k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
A new contact-killing and non-leaching antimicrobial polymer was prepared by a robust, efficient and orthogonal click-chemistry.
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Affiliation(s)
- Kaimei Peng
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Tao Zou
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wei Ding
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Ruonan Wang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Jinshan Guo
- Aleo BME
- Inc.200 Innovation Blvd
- State College
- USA
| | | | - Weiping Tu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Chao Liu
- Aleo BME
- Inc.200 Innovation Blvd
- State College
- USA
| | - Jianqing Hu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
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26
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Huang Z, Zhang H, Bai H, Bai Y, Wang S, Zhang X. Polypseudorotaxane Constructed from Cationic Polymer with Cucurbit[7]uril for Controlled Antibacterial Activity. ACS Macro Lett 2016; 5:1109-1113. [PMID: 35658190 DOI: 10.1021/acsmacrolett.6b00568] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This letter is aimed to develop a general strategy to fabricate polypseudorotaxanes with controlled antibacterial activity based on cationic polymers. As a proof of concept, the commercially available antibacterial cationic polymer, ε-poly-l-lysine hydrochloride, was chosen for the demonstration. Using host-guest chemistry, cucurbit[7]uril (CB[7]), a water-soluble macrocyclic host, was employed to bind with the positive charge and hydrophobic component on ε-poly-l-lysine hydrochlorides for antibacterial regulation. In this way, by tuning the ratio of CB[7] to the cationic polymer, the antibacterial polypseudorotaxane can be obtained, and the antibacterial efficiency can be well tuned from 5% to 100%. This line of research will enrich the field of cationic polymers and polypseudorotaxanes with important functions on precise control over antibacterial activity.
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Affiliation(s)
- Zehuan Huang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
| | - Hongyi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, United States
| | - Haotian Bai
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Yunhao Bai
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
| | - Shu Wang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Xi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
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27
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Yashima E, Ousaka N, Taura D, Shimomura K, Ikai T, Maeda K. Supramolecular Helical Systems: Helical Assemblies of Small Molecules, Foldamers, and Polymers with Chiral Amplification and Their Functions. Chem Rev 2016; 116:13752-13990. [PMID: 27754649 DOI: 10.1021/acs.chemrev.6b00354] [Citation(s) in RCA: 1198] [Impact Index Per Article: 149.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this review, we describe the recent advances in supramolecular helical assemblies formed from chiral and achiral small molecules, oligomers (foldamers), and helical and nonhelical polymers from the viewpoints of their formations with unique chiral phenomena, such as amplification of chirality during the dynamic helically assembled processes, properties, and specific functionalities, some of which have not been observed in or achieved by biological systems. In addition, a brief historical overview of the helical assemblies of small molecules and remarkable progress in the synthesis of single-stranded and multistranded helical foldamers and polymers, their properties, structures, and functions, mainly since 2009, will also be described.
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Affiliation(s)
- Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Kouhei Shimomura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
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28
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Kulikov OV, Siriwardane DA, McCandless GT, Mahmood SF, Novak BM. Self-assembly studies on triazolepolycarbodiimide- g -polystyrene copolymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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29
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Mitra S, Kandambeth S, Biswal BP, Khayum M A, Choudhury CK, Mehta M, Kaur G, Banerjee S, Prabhune A, Verma S, Roy S, Kharul UK, Banerjee R. Self-Exfoliated Guanidinium-Based Ionic Covalent Organic Nanosheets (iCONs). J Am Chem Soc 2016; 138:2823-8. [PMID: 26866697 DOI: 10.1021/jacs.5b13533] [Citation(s) in RCA: 269] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Covalent organic nanosheets (CONs) have emerged as functional two-dimensional materials for versatile applications. Although π-π stacking between layers, hydrolytic instability, possible restacking prevents their exfoliation on to few thin layered CONs from crystalline porous polymers. We anticipated rational designing of a structure by intrinsic ionic linker could be the solution to produce self-exfoliated CONs without external stimuli. In an attempt to address this issue, we have synthesized three self-exfoliated guanidinium halide based ionic covalent organic nanosheets (iCONs) with antimicrobial property. Self-exfoliation phenomenon has been supported by molecular dynamics (MD) simulation as well. Intrinsic ionic guanidinium unit plays the pivotal role for both self-exfoliation and antibacterial property against both Gram-positive and Gram-negative bacteria. Using such iCONs, we have devised a mixed matrix membrane which could be useful for antimicrobial coatings with plausible medical benefits.
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Affiliation(s)
| | - Sharath Kandambeth
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Bishnu P Biswal
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Abdul Khayum M
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Chandan K Choudhury
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Mihir Mehta
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Gagandeep Kaur
- Department of Chemistry, Indian Institute of Technology , Kanpur 208016, India
| | - Subhrashis Banerjee
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Asmita Prabhune
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Sandeep Verma
- Department of Chemistry, Indian Institute of Technology , Kanpur 208016, India
| | | | - Ulhas K Kharul
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Rahul Banerjee
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
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30
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Abstract
Naturally occurring antimicrobial peptides have been honed by evolution over millions of years to give highly safe and efficacious antimicrobials that form part of many organisms’ immune systems. By studying these peptides to identify key aspects of structure and composition, suitable synthetic polymer mimics can be designed that hold potential as anti-infective agents. This review focusses on an important aspect of peptide mimicry, that of replicating the chemical functionality provided by key amino acids present in antimicrobial peptides. These include polymethacrylate mimics of arginine-rich and tryptophan-rich peptides. Systematic investigation of the structure–activity relationships of these polymers identifies the guanidine based poly(methylmethacrylate-co-2-guanidinoethyl methacrylate) (pMMA-co-GEMA) copolymers with low molecular weight and low methyl content as having superior activity profiles when compared with all other combinations. Unique antibiofilm activity of these polymers is also revealed in in vitro testing against monomicrobial and polymicrobial biofilms of the bacteria Staphylococcus aureus and the fungus Candida albicans. This highlights Mother Nature as an important resource in drug development and identifies the arginine-mimicking polymethacrylates as important leads for the development of a new generation of antimicrobial agents to tackle resistance.
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31
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Berlinck RGS, Romminger S. The chemistry and biology of guanidine natural products. Nat Prod Rep 2016; 33:456-90. [DOI: 10.1039/c5np00108k] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The present review discusses the isolation, structure determination, synthesis, biosynthesis and biological activities of secondary metabolites bearing a guanidine group.
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Affiliation(s)
| | - Stelamar Romminger
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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32
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Guo J, Xu Q, Zheng Z, Zhou S, Mao H, Wang B, Yan F. Intrinsically Antibacterial Poly(ionic liquid) Membranes: The Synergistic Effect of Anions. ACS Macro Lett 2015; 4:1094-1098. [PMID: 35614810 DOI: 10.1021/acsmacrolett.5b00609] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The development of materials with intrinsically antimicrobial activities has attracted great interest. Herein, we report the synthesis of free-standing and robust poly(ionic liquid) (PIL) membranes with high antibacterial activities by in situ photo-cross-linking of an ionic liquid monomer and followed by anion-exchange with an amino acid (l-proline (Pro) or l-tryptophan (Trp)). The resultant PIL-based membranes with excellent robustness exhibit high antimicrobial properties against both Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) and present no significant hemolysis and cytotoxicity toward human red blood and skin fibroblast cells, as well as low adsorption of bovine serum albumin. The synthesized PIL-Trp membranes exhibit the highest antibacterial efficiency due to the synergistic attributes of both imidazolium cation and Trp- anion. Furthermore, all the PIL-based membranes exhibit long-term antibacterial stability, which demonstrates clinical feasibility in topical applications.
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Affiliation(s)
- Jiangna Guo
- Jiangsu
Key Laboratory of Advanced Functional Polymer Design and Application,
Department of Polymer Science and Engineering, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Qiming Xu
- Department
of Anesthesiology and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhiqiang Zheng
- Jiangsu
Key Laboratory of Advanced Functional Polymer Design and Application,
Department of Polymer Science and Engineering, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Shengbo Zhou
- Department
of Plastic and Reconstructive Surgery, Shanghai Ninth People’s
Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hailei Mao
- Department
of Anesthesiology and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Bin Wang
- Department
of Plastic and Reconstructive Surgery, Shanghai Ninth People’s
Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Feng Yan
- Jiangsu
Key Laboratory of Advanced Functional Polymer Design and Application,
Department of Polymer Science and Engineering, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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33
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Carpenter BL, Scholle F, Sadeghifar H, Francis AJ, Boltersdorf J, Weare WW, Argyropoulos DS, Maggard PA, Ghiladi RA. Synthesis, Characterization, and Antimicrobial Efficacy of Photomicrobicidal Cellulose Paper. Biomacromolecules 2015; 16:2482-92. [DOI: 10.1021/acs.biomac.5b00758] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | | | - Hasan Sadeghifar
- Department
of Wood and Paper Science, Sari Branch, Islamic Azad University, P.O. Box 48161-19318, Sari, Iran
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34
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Carpenter BL, Situ X, Scholle F, Bartelmess J, Weare WW, Ghiladi RA. Antiviral, Antifungal and Antibacterial Activities of a BODIPY-Based Photosensitizer. Molecules 2015; 20:10604-21. [PMID: 26060922 PMCID: PMC6272413 DOI: 10.3390/molecules200610604] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 05/30/2015] [Accepted: 06/04/2015] [Indexed: 12/19/2022] Open
Abstract
Antimicrobial photodynamic inactivation (aPDI) employing the BODIPY-based photosensitizer 2,6-diiodo-1,3,5,7-tetramethyl-8-(N-methyl-4-pyridyl)-4,4'-difluoro-boradiazaindacene (DIMPy-BODIPY) was explored in an in vitro assay against six species of bacteria (eight total strains), three species of yeast, and three viruses as a complementary approach to their current drug-based or non-existent treatments. Our best results achieved a noteworthy 5-6 log unit reduction in CFU at 0.1 μM for Staphylococcus aureus (ATCC-2913), methicillin-resistant S. aureus (ATCC-44), and vancomycin-resistant Enterococcus faecium (ATCC-2320), a 4-5 log unit reduction for Acinetobacter baumannii ATCC-19606 (0.25 μM), multidrug resistant A. baumannii ATCC-1605 (0.1 μM), Pseudomonas aeruginosa ATCC-97 (0.5 μM), and Klebsiella pneumoniae ATCC-2146 (1 μM), and a 3 log unit reduction for Mycobacterium smegmatis mc2155 (ATCC-700084). A 5 log unit reduction in CFU was observed for Candida albicans ATCC-90028 (1 μM) and Cryptococcus neoformans ATCC-64538 (0.5 μM), and a 3 log unit reduction was noted for Candida glabrata ATCC-15545 (1 μM). Infectivity was reduced by 6 log units in dengue 1 (0.1 μM), by 5 log units (0.5 μM) in vesicular stomatitis virus, and by 2 log units (5 μM) in human adenovirus-5. Overall, the results demonstrate that DIMPy-BODIPY exhibits antiviral, antibacterial and antifungal photodynamic inactivation at nanomolar concentrations and short illumination times.
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Affiliation(s)
- Bradley L Carpenter
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Xingci Situ
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Frank Scholle
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7614, USA.
| | - Juergen Bartelmess
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Walter W Weare
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Reza A Ghiladi
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
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35
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Kulikov OV, Siriwardane DA, Reuther JF, McCandless GT, Sun HJ, Li Y, Mahmood SF, Sheiko SS, Percec V, Novak BM. Characterization of Fibrous Aggregated Morphologies and Other Complex Architectures Self-Assembled from Helical Alkyne and Triazole Polycarbodiimides (R)- and (S)-Families in the Bulk and Thin Film. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00407] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Oleg V. Kulikov
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | | | - James F. Reuther
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Gregory T. McCandless
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Hao-Jan Sun
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yuanchao Li
- Department
of Chemistry, The University at North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Samsuddin F. Mahmood
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Sergei S. Sheiko
- Department
of Chemistry, The University at North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Virgil Percec
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Bruce M. Novak
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
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36
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Reuther JF, Siriwardane DA, Kulikov OV, Batchelor BL, Campos R, Novak BM. Facile Synthesis of Rod–Coil Block Copolymers with Chiral, Helical Polycarbodiimide Segments via Postpolymerization CuAAC “Click” Coupling of Functional End Groups. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00453] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- James F. Reuther
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Dumindika A. Siriwardane
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Oleg V. Kulikov
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Benjamin L. Batchelor
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Raymond Campos
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
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37
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38
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Zhou Z, Wei D, Lu Y. Polyhexamethylene guanidine hydrochloride shows bactericidal advantages over chlorhexidine digluconate against ESKAPE bacteria. Biotechnol Appl Biochem 2014; 62:268-74. [DOI: 10.1002/bab.1255] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 05/26/2014] [Indexed: 12/11/2022]
Affiliation(s)
- Zhongxin Zhou
- State Key Laboratory of Bioreactor Engineering; School of Bioengineering, East China University of Science and Technology; Shanghai People's Republic of China
| | - Dafu Wei
- Key Laboratory for Ultrafine Materials; Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology; Shanghai People's Republic of China
| | - Yanhua Lu
- State Key Laboratory of Bioreactor Engineering; School of Bioengineering, East China University of Science and Technology; Shanghai People's Republic of China
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39
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Locock KES, Michl TD, Stevens N, Hayball JD, Vasilev K, Postma A, Griesser HJ, Meagher L, Haeussler M. Antimicrobial Polymethacrylates Synthesized as Mimics of Tryptophan-Rich Cationic Peptides. ACS Macro Lett 2014; 3:319-323. [PMID: 35590739 DOI: 10.1021/mz5001527] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This study describes a facile and high yielding route to two series of polymethacrylates inspired by the naturally occurring, tryptophan-rich cationic antimicrobial polymers. Appropriate optimization of indole content within each gave rise to polymers with high potency against Staphylococcus epidermidis (e.g., PGI-3 minimum inhibitory concentration (MIC) = 12 μg/mL) and the methicillin-resistant strain of Staphylococcus aureus (e.g., PGI-3 MIC = 47 μg/mL) with minimal toxicity toward human red blood cells. Future work will be directed toward understanding the cooperative roles that the cationic and indole pendant groups have for the mechanism of these polymers.
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Affiliation(s)
- Katherine E. S. Locock
- CSIRO
Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168, Australia
| | - Thomas D. Michl
- Ian
Wark Research Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Natalie Stevens
- Sansom
Institute, School of Pharmacy and Medical Sciences, University of South Australia, City East, South Australia 5000, Australia
| | - John D. Hayball
- Sansom
Institute, School of Pharmacy and Medical Sciences, University of South Australia, City East, South Australia 5000, Australia
| | - Krasimir Vasilev
- Mawson
Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Almar Postma
- CSIRO
Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168, Australia
| | - Hans J. Griesser
- Mawson
Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Laurence Meagher
- CSIRO
Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168, Australia
| | - Matthias Haeussler
- CSIRO
Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168, Australia
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40
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Bang EK, Gasparini G, Molinard G, Roux A, Sakai N, Matile S. Substrate-initiated synthesis of cell-penetrating poly(disulfide)s. J Am Chem Soc 2013; 135:2088-2091. [PMID: 23363440 PMCID: PMC4601153 DOI: 10.1021/ja311961k] [Citation(s) in RCA: 155] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lessons from surface-initiated polymerization are applied to grow cell-penetrating poly(disulfide)s directly on substrates of free choice. Reductive depolymerization after cellular uptake should then release the native substrates and minimize toxicity. In the presence of thiolated substrates, propagators containing a strained disulfide from asparagusic or, preferably, lipoic acid and a guanidinium cation polymerize into poly(disulfide)s in less than 5 min at room temperature at pH 7. Substrate-initiated polymerization of cationic poly(disulfide)s and their depolymerization with dithiothreitol causes the appearance and disappearance of transport activity in fluorogenic vesicles. The same process is further characterized by gel-permeation chromatography and fluorescence resonance energy transfer.
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Affiliation(s)
- Eun-Kyoung Bang
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Giulio Gasparini
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Guillaume Molinard
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Aurélien Roux
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Naomi Sakai
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Stefan Matile
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
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41
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Quek JY, Roth PJ, Evans RA, Davis TP, Lowe AB. Reversible addition-fragmentation chain transfer synthesis of amidine-based, CO2-responsive homo and AB diblock (Co)polymers comprised of histamine and their gas-triggered self-assembly in water. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26397] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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42
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Budhathoki-Uprety J, Reuther JF, Novak BM. Determining the Regioregularity in Alkyne Polycarbodiimides and Their Orthogonal Modification of Side Chains To Yield Perfectly Alternating Functional Polymers. Macromolecules 2012. [DOI: 10.1021/ma301639m] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Januka Budhathoki-Uprety
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - James F. Reuther
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - Bruce M. Novak
- Department
of Chemistry and
the Alan G MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080-3021, United
States
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43
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DeSousa JD, Novak BM. Resolving the Regioregularity of Poly( N- n-hexyl- N'-phenylcarbodiimide) via Nitrogen-15 Labeling. ACS Macro Lett 2012; 1:672-675. [PMID: 35607085 DOI: 10.1021/mz3001836] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nitrogen-15 nuclear magnetic resonance (NMR) spectroscopy and infrared spectroscopy (IR) were performed on an isotope-enriched poly(N-n-hexyl-N'-phenylcarbodiimide) to determine directly the connectivity and regioregularity of a polymer. Up to this point, the imine, C═N, IR stretch at 1660-1620 cm-1 was thought to be a sufficient handle to elucidate the presence or absence of a regioregular microstructure; however, recent findings cast some uncertainties when expanded to all polycarbodiimides. Therefore, an enriched 15N NMR study was undertaken to unambiguously resolve that a N-n-hexyl-N'-phenylcarbodiimide, when polymerized with a 2,2,2-trifluoroethoxide trichlorotitanium(IV) catalyst in chloroform, will produce a completely regioregular polymer. The only regioisomer present is the one in which the phenyl pendant group is positioned on the imino-nitrogen. The study was expanded to a chiral, (R)-BINOL-Ti(IV)-diisopropoxide catalyst which revealed no change in the regioisomer or the degree of regioregularity. In addition to 15N NMR spectra, the IR imine stretch exhibited isotope shifts for poly(N-n-hexyl-N'-phenylcarbodiimide) when labeled on both imino- and amino-nitrogen or solely the imino-nitrogen of ∼11 cm-1; however, no shift was manifested when labeling was restricted to the amino-nitrogen.
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Affiliation(s)
- Joseph D. DeSousa
- Department of Chemistry and The Alan
G MacDiarmid NanoTech
Institute, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Bruce M. Novak
- Department of Chemistry and The Alan
G MacDiarmid NanoTech
Institute, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
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