Self-Immolative Polymersomes for High-Efficiency Triggered Release and Programmed Enzymatic Reactions

Stimuli-triggered disassembly of block copolymer vesicles or polymersomes has been conventionally achieved via solubility switching of the bilayer-forming block, requiring cooperative changes of most of the repeating units. Herein we report an alternative approach by incorporating hydrophobic blocks...

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Published inJournal of the American Chemical Society Vol. 136; no. 20; pp. 7492 - 7497
Main Authors Liu, Guhuan, Wang, Xiaorui, Hu, Jinming, Zhang, Guoying, Liu, Shiyong
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 21.05.2014
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Abstract Stimuli-triggered disassembly of block copolymer vesicles or polymersomes has been conventionally achieved via solubility switching of the bilayer-forming block, requiring cooperative changes of most of the repeating units. Herein we report an alternative approach by incorporating hydrophobic blocks exhibiting stimuli-triggered head-to-tail cascade depolymerization features. Amphiphilic block copolymers bearing this motif self-assemble into self-immolative polymersomes (SIPsomes). By modular design of terminal capping moieties, visible light, UV light, and reductive milieu can be utilized to actuate SIPsomes disintegration into water-soluble small molecules and hydrophilic blocks. The design of SIPsomes allows for triggered drug co-release and controllable access toward protons, oxygen, and enzymatic substrates. We also demonstrate programmed (OR-, AND-, and XOR-type logic) enzymatic reactions by integrating SIPsome encapsulation and trigger/capping moiety-selective cascade depolymerization events.
AbstractList Stimuli-triggered disassembly of block copolymer vesicles or polymersomes has been conventionally achieved via solubility switching of the bilayer-forming block, requiring cooperative changes of most of the repeating units. Herein we report an alternative approach by incorporating hydrophobic blocks exhibiting stimuli-triggered head-to-tail cascade depolymerization features. Amphiphilic block copolymers bearing this motif self-assemble into self-immolative polymersomes (SIPsomes). By modular design of terminal capping moieties, visible light, UV light, and reductive milieu can be utilized to actuate SIPsomes disintegration into water-soluble small molecules and hydrophilic blocks. The design of SIPsomes allows for triggered drug co-release and controllable access toward protons, oxygen, and enzymatic substrates. We also demonstrate programmed (OR-, AND-, and XOR-type logic) enzymatic reactions by integrating SIPsome encapsulation and trigger/capping moiety-selective cascade depolymerization events.
Stimuli-triggered disassembly of block copolymer vesicles or polymersomes has been conventionally achieved via solubility switching of the bilayer-forming block, requiring cooperative changes of most of the repeating units. Herein we report an alternative approach by incorporating hydrophobic blocks exhibiting stimuli-triggered head-to-tail cascade depolymerization features. Amphiphilic block copolymers bearing this motif self-assemble into self-immolative polymersomes (SIPsomes). By modular design of terminal capping moieties, visible light, UV light, and reductive milieu can be utilized to actuate SIPsomes disintegration into water-soluble small molecules and hydrophilic blocks. The design of SIPsomes allows for triggered drug co-release and controllable access toward protons, oxygen, and enzymatic substrates. We also demonstrate programmed (OR-, AND-, and XOR-type logic) enzymatic reactions by integrating SIPsome encapsulation and trigger/capping moiety-selective cascade depolymerization events.Stimuli-triggered disassembly of block copolymer vesicles or polymersomes has been conventionally achieved via solubility switching of the bilayer-forming block, requiring cooperative changes of most of the repeating units. Herein we report an alternative approach by incorporating hydrophobic blocks exhibiting stimuli-triggered head-to-tail cascade depolymerization features. Amphiphilic block copolymers bearing this motif self-assemble into self-immolative polymersomes (SIPsomes). By modular design of terminal capping moieties, visible light, UV light, and reductive milieu can be utilized to actuate SIPsomes disintegration into water-soluble small molecules and hydrophilic blocks. The design of SIPsomes allows for triggered drug co-release and controllable access toward protons, oxygen, and enzymatic substrates. We also demonstrate programmed (OR-, AND-, and XOR-type logic) enzymatic reactions by integrating SIPsome encapsulation and trigger/capping moiety-selective cascade depolymerization events.
Author Zhang, Guoying
Liu, Guhuan
Hu, Jinming
Wang, Xiaorui
Liu, Shiyong
AuthorAffiliation University of Science and Technology of China
CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering
AuthorAffiliation_xml – name: CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering
– name: University of Science and Technology of China
Author_xml – sequence: 1
  givenname: Guhuan
  surname: Liu
  fullname: Liu, Guhuan
– sequence: 2
  givenname: Xiaorui
  surname: Wang
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– sequence: 3
  givenname: Jinming
  surname: Hu
  fullname: Hu, Jinming
– sequence: 4
  givenname: Guoying
  surname: Zhang
  fullname: Zhang, Guoying
– sequence: 5
  givenname: Shiyong
  surname: Liu
  fullname: Liu, Shiyong
  email: sliu@ustc.edu.cn
BackLink https://www.ncbi.nlm.nih.gov/pubmed/24786176$$D View this record in MEDLINE/PubMed
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Snippet Stimuli-triggered disassembly of block copolymer vesicles or polymersomes has been conventionally achieved via solubility switching of the bilayer-forming...
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SubjectTerms Alkaline Phosphatase - antagonists & inhibitors
Alkaline Phosphatase - chemistry
Alkaline Phosphatase - metabolism
composite polymers
depolymerization
drugs
encapsulation
enzymatic reactions
Hydrogen-Ion Concentration
hydrophilicity
Hydrophobic and Hydrophilic Interactions
hydrophobicity
Light
Lipase - antagonists & inhibitors
Lipase - chemistry
Lipase - metabolism
Molecular Structure
oxygen
Particle Size
Polymerization
Polymers - chemistry
Polymers - metabolism
protons
Surface Properties
ultraviolet radiation
Title Self-Immolative Polymersomes for High-Efficiency Triggered Release and Programmed Enzymatic Reactions
URI http://dx.doi.org/10.1021/ja5030832
https://www.ncbi.nlm.nih.gov/pubmed/24786176
https://www.proquest.com/docview/1527331876
https://www.proquest.com/docview/2000330078
Volume 136
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