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Biofilm Removal by Reversible Shape Recovery of the Substrate
[Image: see text] Bacteria can colonize essentially any surface and form antibiotic resistant biofilms, which are multicellular structures embedded in an extracellular matrix secreted by the attached cells. To develop better biofilm control technologies, we recently demonstrated that mature biofilms...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153534/ https://www.ncbi.nlm.nih.gov/pubmed/33822590 http://dx.doi.org/10.1021/acsami.0c20697 |
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author | Lee, Sang Won Carnicelli, Joseph Getya, Dariya Gitsov, Ivan Phillips, K. Scott Ren, Dacheng |
author_facet | Lee, Sang Won Carnicelli, Joseph Getya, Dariya Gitsov, Ivan Phillips, K. Scott Ren, Dacheng |
author_sort | Lee, Sang Won |
collection | PubMed |
description | [Image: see text] Bacteria can colonize essentially any surface and form antibiotic resistant biofilms, which are multicellular structures embedded in an extracellular matrix secreted by the attached cells. To develop better biofilm control technologies, we recently demonstrated that mature biofilms can be effectively removed through on-demand shape recovery of a shape memory polymer (SMP) composed of tert-butyl acrylate (tBA). It was further demonstrated that such a dynamic substratum can sensitize the detached biofilm cells to antibiotics. However, this SMP can undergo shape change only once, limiting its application in long-term biofilm control. This motivated the present study, which aimed to prove the concept that biofilm can be effectively removed by repeated on-demand shape recovery. Reversible shape memory polymers (rSMPs) containing poly(ε-caprolactone) diisocyanatoethyl dimethacrylate (PCLDIMA) of varying molecular masses and butyl acrylate (BA) as a linker were synthesized by using benzoyl peroxide (BPO) as a thermal initiator. By comparison of several combinations of PCLDIMA of different molecular masses, a 2:1 weight ratio mixture of 2000 and 15000 g/mol PCLDIMA was the most promising because it had a shape transition (at 36.7 °C) close to body temperature. The synthesized rSMP demonstrated good reversible shape recovery and up to 94.3 ± 1.0% removal of 48 h Pseudomonas aeruginosa PAO1 biofilm cells after three consecutive shape recovery cycles. Additionally, the detached biofilm cells were found to be 5.0 ± 1.2 times more susceptible to 50 μg/mL tobramycin than the static control. |
format | Online Article Text |
id | pubmed-8153534 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-81535342021-05-27 Biofilm Removal by Reversible Shape Recovery of the Substrate Lee, Sang Won Carnicelli, Joseph Getya, Dariya Gitsov, Ivan Phillips, K. Scott Ren, Dacheng ACS Appl Mater Interfaces [Image: see text] Bacteria can colonize essentially any surface and form antibiotic resistant biofilms, which are multicellular structures embedded in an extracellular matrix secreted by the attached cells. To develop better biofilm control technologies, we recently demonstrated that mature biofilms can be effectively removed through on-demand shape recovery of a shape memory polymer (SMP) composed of tert-butyl acrylate (tBA). It was further demonstrated that such a dynamic substratum can sensitize the detached biofilm cells to antibiotics. However, this SMP can undergo shape change only once, limiting its application in long-term biofilm control. This motivated the present study, which aimed to prove the concept that biofilm can be effectively removed by repeated on-demand shape recovery. Reversible shape memory polymers (rSMPs) containing poly(ε-caprolactone) diisocyanatoethyl dimethacrylate (PCLDIMA) of varying molecular masses and butyl acrylate (BA) as a linker were synthesized by using benzoyl peroxide (BPO) as a thermal initiator. By comparison of several combinations of PCLDIMA of different molecular masses, a 2:1 weight ratio mixture of 2000 and 15000 g/mol PCLDIMA was the most promising because it had a shape transition (at 36.7 °C) close to body temperature. The synthesized rSMP demonstrated good reversible shape recovery and up to 94.3 ± 1.0% removal of 48 h Pseudomonas aeruginosa PAO1 biofilm cells after three consecutive shape recovery cycles. Additionally, the detached biofilm cells were found to be 5.0 ± 1.2 times more susceptible to 50 μg/mL tobramycin than the static control. American Chemical Society 2021-04-06 2021-04-21 /pmc/articles/PMC8153534/ /pubmed/33822590 http://dx.doi.org/10.1021/acsami.0c20697 Text en © 2021 American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Lee, Sang Won Carnicelli, Joseph Getya, Dariya Gitsov, Ivan Phillips, K. Scott Ren, Dacheng Biofilm Removal by Reversible Shape Recovery of the Substrate |
title | Biofilm
Removal by Reversible Shape Recovery of the
Substrate |
title_full | Biofilm
Removal by Reversible Shape Recovery of the
Substrate |
title_fullStr | Biofilm
Removal by Reversible Shape Recovery of the
Substrate |
title_full_unstemmed | Biofilm
Removal by Reversible Shape Recovery of the
Substrate |
title_short | Biofilm
Removal by Reversible Shape Recovery of the
Substrate |
title_sort | biofilm
removal by reversible shape recovery of the
substrate |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153534/ https://www.ncbi.nlm.nih.gov/pubmed/33822590 http://dx.doi.org/10.1021/acsami.0c20697 |
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