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Zhu T, Sha Y, Yan J, Pageni P, Rahman MA, Yan Y, Tang C. Metallo-polyelectrolytes as a class of ionic macromolecules for functional materials. Nat Commun 2018; 9:4329. [PMID: 30337530 PMCID: PMC6193978 DOI: 10.1038/s41467-018-06475-9] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 09/10/2018] [Indexed: 12/31/2022] Open
Abstract
The fields of soft polymers and macromolecular sciences have enjoyed a unique combination of metals and organic frameworks in the name of metallopolymers or organometallic polymers. When metallopolymers carry charged groups, they form a class of metal-containing polyelectrolytes or metallo-polyelectrolytes. This review identifies the unique properties and functions of metallo-polyelectrolytes compared with conventional organo-polyelectrolytes, in the hope of shedding light on the formation of functional materials with intriguing applications and potential benefits. It concludes with a critical perspective on the challenges and hurdles for metallo-polyelectrolytes, especially experimental quantitative analysis and theoretical modeling of ionic binding.
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Affiliation(s)
- Tianyu Zhu
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Ye Sha
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Jing Yan
- Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an, Shannxi, 710129, China
| | - Parasmani Pageni
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Md Anisur Rahman
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Yi Yan
- Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an, Shannxi, 710129, China.
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.
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Pageni P, Yang P, Bam M, Zhu T, Chen YP, Decho AW, Nagarkatti M, Tang C. Recyclable magnetic nanoparticles grafted with antimicrobial metallopolymer-antibiotic bioconjugates. Biomaterials 2018; 178:363-372. [PMID: 29759729 DOI: 10.1016/j.biomaterials.2018.05.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/12/2018] [Accepted: 05/03/2018] [Indexed: 11/16/2022]
Abstract
Over-prescription and improper use of antibiotics has led to the emergence of bacterial resistance, posing a major threat to public health. There has been significant interest in the development of alternative therapies and agents to combat antibiotic resistance. We report the preparation of recyclable magnetic iron oxide nanoparticles grafted with charged cobaltocenium-containing metallopolymers by surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization. β-Lactam antibiotics were then conjugated with metallopolymers to enhance their vitality against both Gram-positive and Gram-negative bacteria. The enhanced antibacterial activity was a result of synergy of antimicrobial segments that facilitate the inhibition of hydrolysis of antibiotics and local enhancement of antibiotic concentration on a nanoparticle surface. These magnetic nanoparticles can be recycled numerous times without losing the initial antimicrobial potency. Studies suggested negligible toxicity of metallopolymer-grafted nanoparticles to red blood cells and minimal tendency to induce resistance in bacteria.
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Affiliation(s)
- Parasmani Pageni
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, United States
| | - Peng Yang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, United States
| | - Marpe Bam
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC 29209, United States
| | - Tianyu Zhu
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, United States
| | - Yung Pin Chen
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208, United States
| | - Alan W Decho
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC 29209, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, United States.
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