Journal
NATURE MATERIALS
Volume 3, Issue 4, Pages 244-248Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nmat1093
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In biology, lipids are well known for their ability to assemble into spherical vesicles(1). Proteins, in particular virus capsids, can also form regular vesicle-like structures, where the precise folding and stable conformations of many identical subunits directs their self-assembly(2). Functionality present on these subunits also controls their disassembly within the cellular environment, for example, in response to a pH change(3). Here, we report the preparation of diblock copolypeptides that self-assemble into spherical vesicular assemblies whose size and structure are dictated primarily by the ordered conformations of the polymer segments, in a manner similar to viral capsid assembly. Furthermore, functionality was incorporated into these molecules to render them susceptible to environmental stimuli, which is desirable for drug-delivery applications. The control of assembly and function exhibited in these systems is a significant advance towards the synthesis of materials that can mimic the precise three-dimensional assembly found in proteins.
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