2007
DOI: 10.1021/ja070748i
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Polymer-Caged Lipsomes:  A pH-Responsive Delivery System with High Stability

Abstract: Polymer-incorporated liposomes were prepared from preformed liposomes and a cholesterol-functionalized poly(acrylic acid) additive via a simple drop-in procedure. These modified liposomes possess surface-active carboxylate groups that can be cross-linked with telechelic 2,2‘-(ethylenedioxy)bis(ethylamine) linkers, resulting in polymer-caged liposomes (PCLs) that are highly stable and have tunable pH-sensitive responses.

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Cited by 233 publications
(244 citation statements)
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“…Passive targeting employs polymeric structures as carriers, such as nanoparticles, polymers, or liposomes. [284][285][286][287][288][289][290][291] This strategy is highly dependent on the enhanced permeability and retention effect. The direct conjugation of a chemotherapeutic drug to a certain tumor cell targeting ligand represents active targeting.…”
Section: Challenges and Perspectives For Optical Chemical Probesmentioning
confidence: 99%
“…Passive targeting employs polymeric structures as carriers, such as nanoparticles, polymers, or liposomes. [284][285][286][287][288][289][290][291] This strategy is highly dependent on the enhanced permeability and retention effect. The direct conjugation of a chemotherapeutic drug to a certain tumor cell targeting ligand represents active targeting.…”
Section: Challenges and Perspectives For Optical Chemical Probesmentioning
confidence: 99%
“…Traditionally drugs in photothermal therapies are delivered via polymeric structures or liposomes [99,[227][228][229][230][231][232]. However, these delivery agents are hindered by several factors.…”
Section: Multi-modal Treatmentsmentioning
confidence: 99%
“…However, these delivery agents are hindered by several factors. Polymers are cytotoxic and degrade in vivo, promoting immunogenic reactions, and liposomes are prone to leakage which results in decreased efficiency of biomolecule delivery [231,[233][234][235][236][237].…”
Section: Multi-modal Treatmentsmentioning
confidence: 99%
“…However, these bilayer and acyl‐chain lipid products have not fulfilled their practical potential due to their insufficient morphological stability and inclusion leakage in vitro and in vivo 9. To address these drawbacks, various optimizations have been approached,10 which include surface coating with certain amphiphilic molecules (PEGylation; where PEG is polyethylene glycol) and cholesterols for prolonging circulation,11 enhancing elasticity using transferosome formulations for transdermal delivery,12 and improving bioavailability that employ drug–lipid conjugates 13. Although these strategies have significantly promoted the therapeutic potential of traditional lipid nanoparticles with increasingly broad applications, several concerns such as insufficient coverage of surface coating on phospholipid bilayers,14 and the morphological stability of lipid assemblies are likely to decrease after modulating composition, charge, and bilayer architecture.…”
Section: Introductionmentioning
confidence: 99%