Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides
Anhydrous polymers are actively explored as alternative materials to overcome limitations of conventional hydrogel-based antibacterial coating. However, the requirement for strong organic solvent in polymerization reactions often necessitates extra protection steps for encapsulation of target biomol...
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sg-ntu-dr.10356-1368602020-11-01T05:21:41Z Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides Lim, Kaiyang Saravanan, Rathi Chong, Kelvin Kian Long Goh, Sharon Hwee Mian Chua, Ray R. Y. Tambyah, Paul A. Chang, Matthew W. Kline, Kimberly A. Leong, Susanna S. J. School of Biological Sciences Lee Kong Chian School of Medicine (LKCMedicine) Singapore Centre for Environmental Life Sciences and Engineering Science::Medicine Anhydrous Polymer Coating Antimicrobial Peptides Anhydrous polymers are actively explored as alternative materials to overcome limitations of conventional hydrogel-based antibacterial coating. However, the requirement for strong organic solvent in polymerization reactions often necessitates extra protection steps for encapsulation of target biomolecules, lowering encapsulation efficiency, and increasing process complexity. This study reports a novel coating strategy that allows direct solvation and encapsulation of antimicrobial peptides (HHC36) into anhydrous polycaprolactone (PCL) polymer-based dual layer coating. A thin 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) film is layered onto the peptide-impregnated PCL as a diffusion barrier, to modulate and enhance release kinetics. The impregnated peptides are eventually released in a controlled fashion. The use of 2,2,2-trifluoroethanol (TFE), as polymerization and solvation medium, induces the impregnated peptides to adopt highly stable turned conformation, conserving peptide integrity, and functionality during both encapsulation and subsequent release processes. The dual layer coating showed sustained antibacterial functionality, lasting for 14 days. In vivo assessment using an experimental mouse wounding model demonstrated good biocompatibility and significant antimicrobial efficacy of the coating under physiological conditions. The coating was translated onto silicone urinary catheters and showed promising antibacterial efficacy, even outperforming commercial silver-based Dover cather. This anhydrous polymer-based platform holds immense potential as an effective antibacterial coating to prevent clinical device-associated infections. The simplicity of the coating process enhances its industrial viability. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-01-31T06:02:03Z 2020-01-31T06:02:03Z 2018 Journal Article Lim, K., Saravanan, R., Chong, K. K. L., Goh, S. H. M., Chua, R. R. Y., Tambyah, P. A., . . . Leong, S. S. J. (2018). Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides. Biotechnology and bioengineering, 115(8), 2000-2012. doi:10.1002/bit.26713 0006-3592 https://hdl.handle.net/10356/136860 10.1002/bit.26713 29665026 2-s2.0-85046037006 8 115 2000 2012 en Biotechnology and bioengineering © 2018 Wiley Periodicals, Inc. All rights reserved. This paper was published in Biotechnology and bioengineering and is made available with permission of Wiley Periodicals, Inc. application/pdf |
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Science::Medicine Anhydrous Polymer Coating Antimicrobial Peptides Lim, Kaiyang Saravanan, Rathi Chong, Kelvin Kian Long Goh, Sharon Hwee Mian Chua, Ray R. Y. Tambyah, Paul A. Chang, Matthew W. Kline, Kimberly A. Leong, Susanna S. J. Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
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Anhydrous polymers are actively explored as alternative materials to overcome limitations of conventional hydrogel-based antibacterial coating. However, the requirement for strong organic solvent in polymerization reactions often necessitates extra protection steps for encapsulation of target biomolecules, lowering encapsulation efficiency, and increasing process complexity. This study reports a novel coating strategy that allows direct solvation and encapsulation of antimicrobial peptides (HHC36) into anhydrous polycaprolactone (PCL) polymer-based dual layer coating. A thin 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) film is layered onto the peptide-impregnated PCL as a diffusion barrier, to modulate and enhance release kinetics. The impregnated peptides are eventually released in a controlled fashion. The use of 2,2,2-trifluoroethanol (TFE), as polymerization and solvation medium, induces the impregnated peptides to adopt highly stable turned conformation, conserving peptide integrity, and functionality during both encapsulation and subsequent release processes. The dual layer coating showed sustained antibacterial functionality, lasting for 14 days. In vivo assessment using an experimental mouse wounding model demonstrated good biocompatibility and significant antimicrobial efficacy of the coating under physiological conditions. The coating was translated onto silicone urinary catheters and showed promising antibacterial efficacy, even outperforming commercial silver-based Dover cather. This anhydrous polymer-based platform holds immense potential as an effective antibacterial coating to prevent clinical device-associated infections. The simplicity of the coating process enhances its industrial viability. |
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School of Biological Sciences |
author_facet |
School of Biological Sciences Lim, Kaiyang Saravanan, Rathi Chong, Kelvin Kian Long Goh, Sharon Hwee Mian Chua, Ray R. Y. Tambyah, Paul A. Chang, Matthew W. Kline, Kimberly A. Leong, Susanna S. J. |
format |
Article |
author |
Lim, Kaiyang Saravanan, Rathi Chong, Kelvin Kian Long Goh, Sharon Hwee Mian Chua, Ray R. Y. Tambyah, Paul A. Chang, Matthew W. Kline, Kimberly A. Leong, Susanna S. J. |
author_sort |
Lim, Kaiyang |
title |
Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
title_short |
Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
title_full |
Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
title_fullStr |
Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
title_full_unstemmed |
Anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
title_sort |
anhydrous polymer‐based coating with sustainable controlled release functionality for facile, efficacious impregnation, and delivery of antimicrobial peptides |
publishDate |
2020 |
url |
https://hdl.handle.net/10356/136860 |
_version_ |
1683493822812651520 |