Author
Listed:
- Willy Chin
(Institute of Bioengineering and Nanotechnology
NUS Graduate School for Integrative Sciences and Engineering (NGS))
- Guansheng Zhong
(Zhejiang University)
- Qinqin Pu
(University of North Dakota)
- Chuan Yang
(Institute of Bioengineering and Nanotechnology)
- Weiyang Lou
(Zhejiang University)
- Paola Florez De Sessions
(Genome Institute of Singapore)
- Balamurugan Periaswamy
(Genome Institute of Singapore)
- Ashlynn Lee
(Institute of Bioengineering and Nanotechnology)
- Zhen Chang Liang
(Institute of Bioengineering and Nanotechnology)
- Xin Ding
(Institute of Bioengineering and Nanotechnology)
- Shujun Gao
(Institute of Bioengineering and Nanotechnology)
- Collins Wenhan Chu
(Genome Institute of Singapore)
- Simone Bianco
(IBM Almaden Research Center)
- Chang Bao
(Zhejiang University)
- Yen Wah Tong
(National University of Singapore)
- Weimin Fan
(Zhejiang University)
- Min Wu
(University of North Dakota)
- James L. Hedrick
(IBM Almaden Research Center)
- Yi Yan Yang
(Institute of Bioengineering and Nanotechnology)
Abstract
Polymyxins remain the last line treatment for multidrug-resistant (MDR) infections. As polymyxins resistance emerges, there is an urgent need to develop effective antimicrobial agents capable of mitigating MDR. Here, we report biodegradable guanidinium-functionalized polycarbonates with a distinctive mechanism that does not induce drug resistance. Unlike conventional antibiotics, repeated use of the polymers does not lead to drug resistance. Transcriptomic analysis of bacteria further supports development of resistance to antibiotics but not to the macromolecules after 30 treatments. Importantly, high in vivo treatment efficacy of the macromolecules is achieved in MDR A. baumannii-, E. coli-, K. pneumoniae-, methicillin-resistant S. aureus-, cecal ligation and puncture-induced polymicrobial peritonitis, and P. aeruginosa lung infection mouse models while remaining non-toxic (e.g., therapeutic index—ED50/LD50: 1473 for A. baumannii infection). These biodegradable synthetic macromolecules have been demonstrated to have broad spectrum in vivo antimicrobial activity, and have excellent potential as systemic antimicrobials against MDR infections.
Suggested Citation
Willy Chin & Guansheng Zhong & Qinqin Pu & Chuan Yang & Weiyang Lou & Paola Florez De Sessions & Balamurugan Periaswamy & Ashlynn Lee & Zhen Chang Liang & Xin Ding & Shujun Gao & Collins Wenhan Chu & , 2018.
"A macromolecular approach to eradicate multidrug resistant bacterial infections while mitigating drug resistance onset,"
Nature Communications, Nature, vol. 9(1), pages 1-14, December.
Handle:
RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03325-6
DOI: 10.1038/s41467-018-03325-6
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