A Novel Strategy for Encapsulation and Release of Proteins: Hydrogels and Microgels with Acid-Labile Acetal Cross-Linkers
摘要:
A new acid-labile acetal cross-linker was synthesized and used to prepare protein-loaded hydrogels and microgels. This cross-linker undergoes an acid-catalyzed degradation with a half-life of 5.5 min at pH 5.0 and 24 h at pH 7.4. Protein-loaded hydrogels were synthesized with this cross-linker, and their release profiles were measured as a function of pH. Hydrogels made with the acetal cross-linker release their contents in a pH-dependent manner. The acetal cross-linker was also used to synthesize microgels with sizes between 1 and 10 mum, a range suitable for phagocytosis. The unique acid sensitivity of the acetal cross-linker should make it a useful synthetic intermediate in the design of acid-sensitive drug or gene delivery systems.
CROSSLINKED POLYMER NANO-ASSEMBLIES AND USES THEREOF
申请人:University of Massachusetts
公开号:US20150209447A1
公开(公告)日:2015-07-30
The invention provides powerful methods and compositions for designing, selecting, fine-tuning and optimizing polymer nanogel and other supramolecular assemblies for various properties including, for example, particle size, density and morphology, guest loading capacity and encapsulation stability, and dynamic release control.
Acid-Degradable Polymer-Caged Lipoplex (PCL) Platform for siRNA Delivery: Facile Cellular Triggered Release of siRNA
作者:Bong Jin Hong、Anthony J. Chipre、SonBinh T. Nguyen
DOI:10.1021/ja404491r
日期:2013.11.27
polymer-caged lipoplex (PCL) platform consisting of a cationic lipoplex core and a biocompatible, pH-responsive polymer shell has been developed for the effective delivery of small interfering RNA (siRNA) through a combination of facile loading, rapid acid-triggered release, cellular internalization, and effective endosomal escape. In vitro testing of this degradable PCL deliveryplatform reveals ∼45- and ∼2
Crosslinked polymer nano-assemblies and uses thereof
申请人:University of Massachusetts
公开号:US09795689B2
公开(公告)日:2017-10-24
The invention provides powerful methods and compositions for designing, selecting, fine-tuning and optimizing polymer nanogel and other supramolecular assemblies for various properties including, for example, particle size, density and morphology, guest loading capacity and encapsulation stability, and dynamic release control.
[EN] CROSSLINKED POLYMER NANO-ASSEMBLIES AND USES THEREOF<br/>[FR] NANO-ASSEMBLAGES POLYMÈRES RÉTICULÉS ET LEURS UTILISATIONS
申请人:UNIV MASSACHUSETTS
公开号:WO2014043110A2
公开(公告)日:2014-03-20
The invention provides powerful methods and compositions for designing, selecting, fine-tuning and optimizing polymer nanogel and other supramolecular assemblies for various properties including, for example, particle size, density and morphology, guest loading capacity and encapsulation stability, and dynamic release control.