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The role of membrane fluidization in the gel-assisted formation of giant polymersomes

Journal Article · · PLoS ONE

Polymersomes are being widely explored as synthetic analogs of lipid vesicles based on their enhanced stability and potential uses in a wide variety of applications in (e.g., drug delivery, cell analogs, etc.). Controlled formation of giant polymersomes for use in membrane studies and cell mimetic systems, however, is currently limited by low-yield production methodologies. Here, we describe for the first time, how the size distribution of giant poly(ethylene glycol)-poly(butadiene) (PEO-PBD) polymersomes formed by gel-assisted rehydration may be controlled based on membrane fluidization. We first show that the average diameter and size distribution of PEO-PBD polymersomes may be readily increased by increasing the temperature of the rehydration solution. Further, we describe a correlative relationship between polymersome size and membrane fluidization through the addition of sucrose during rehydration, enabling the formation of PEO-PBD polymersomes with a range of diameters, including giant-sized vesicles (>100 μm). This correlative relationship suggests that sucrose may function as a small molecule fluidizer during rehydration, enhancing polymer diffusivity during formation and increasing polymersome size. Altogether the ability to easily regulate the size of PEO-PBD polymersomes based on membrane fluidity, either through temperature or fluidizers, has broadly applicability in areas including targeted therapeutic delivery and synthetic biology.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1291338
Report Number(s):
SAND--2016-7533J; 646370
Journal Information:
PLoS ONE, Journal Name: PLoS ONE Journal Issue: 7 Vol. 11; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Self‐Assembly of Giant Unilamellar Vesicles by Film Hydration Methodologies journal March 2019
Polymersomes: Breaking the Glass Ceiling? journal October 2018
Self-assembly/disassembly of giant double-hydrophilic polymersomes at biologically-relevant pH journal January 2018
Liposomes and polymersomes: a comparative review towards cell mimicking journal January 2018
Giant polymersomes from non-assisted film hydration of phosphate-based block copolymers journal January 2018