Comparing Zwitterionic and PEG Exteriors of Polyelectrolyte Complex Micelles
Abstract
A series of model polyelectrolyte complex micelles (PCMs) was prepared to investigate the consequences of neutral and zwitterionic chemistries and distinct charged cores on the size and stability of nanocarriers. Using aqueous reversible addition-fragmentation chain transfer (RAFT) polymerization, we synthesized a well-defined diblock polyelectrolyte system, poly(2-methacryloyloxyethyl phosphorylcholine methacrylate)-block-poly((vinylbenzyl) trimethylammonium) (PMPC-PVBTMA), at various neutral and charged block lengths to compare directly against PCM structure–property relationships centered on poly(ethylene glycol)-block-poly((vinylbenzyl) trimethylammonium) (PEG-PVBTMA) and poly(ethylene glycol)-block-poly(l-lysine) (PEG-PLK). After complexation with a common polyanion, poly(sodium acrylate), the resulting PCMs were characterized by dynamic light scattering (DLS) and small angle X-ray scattering (SAXS). We observed uniform assemblies of spherical micelles with a diameter ~1.5–2× larger when PMPC-PVBTMA was used compared to PEG-PLK and PEG-PVBTMA via SAXS and DLS. In addition, PEG-PLK PCMs proved most resistant to dissolution by both monovalent and divalent salt, followed by PEG-PVBTMA then PMPC-PVBTMA. All micelle systems were serum stable in 100% fetal bovine serum over the course of 8 h by time-resolved DLS, demonstrating minimal interactions with serum proteins and potential as in vivo drug delivery vehicles. This thorough study of the synthesis, assembly, and characterization of zwitterionic polymers in PCMs advances the design space for charge-driven micelle assemblies.
- Authors:
-
- Univ. of Chicago, IL (United States). Pritzker School of Molecular Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division. Center for Molecular Engineering
- Univ. of Chicago, IL (United States). Pritzker School of Molecular Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division. Center for Molecular Engineering
- Univ. of Chicago, IL (United States). Pritzker School of Molecular Engineering
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1815837
- Grant/Contract Number:
- AC02-06CH11357; AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Molecules
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 11; Journal ID: ISSN 1420-3049
- Publisher:
- MDPI
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; polyelectrolyte complexes; micelles; zwitterions; PEG; polymer chemistry
Citation Formats
Ting, Jeffrey M., Marras, Alexander E., Mitchell, Joseph D., Campagna, Trinity R., and Tirrell, Matthew V. Comparing Zwitterionic and PEG Exteriors of Polyelectrolyte Complex Micelles. United States: N. p., 2020.
Web. doi:10.3390/molecules25112553.
Ting, Jeffrey M., Marras, Alexander E., Mitchell, Joseph D., Campagna, Trinity R., & Tirrell, Matthew V. Comparing Zwitterionic and PEG Exteriors of Polyelectrolyte Complex Micelles. United States. https://doi.org/10.3390/molecules25112553
Ting, Jeffrey M., Marras, Alexander E., Mitchell, Joseph D., Campagna, Trinity R., and Tirrell, Matthew V. Sat .
"Comparing Zwitterionic and PEG Exteriors of Polyelectrolyte Complex Micelles". United States. https://doi.org/10.3390/molecules25112553. https://www.osti.gov/servlets/purl/1815837.
@article{osti_1815837,
title = {Comparing Zwitterionic and PEG Exteriors of Polyelectrolyte Complex Micelles},
author = {Ting, Jeffrey M. and Marras, Alexander E. and Mitchell, Joseph D. and Campagna, Trinity R. and Tirrell, Matthew V.},
abstractNote = {A series of model polyelectrolyte complex micelles (PCMs) was prepared to investigate the consequences of neutral and zwitterionic chemistries and distinct charged cores on the size and stability of nanocarriers. Using aqueous reversible addition-fragmentation chain transfer (RAFT) polymerization, we synthesized a well-defined diblock polyelectrolyte system, poly(2-methacryloyloxyethyl phosphorylcholine methacrylate)-block-poly((vinylbenzyl) trimethylammonium) (PMPC-PVBTMA), at various neutral and charged block lengths to compare directly against PCM structure–property relationships centered on poly(ethylene glycol)-block-poly((vinylbenzyl) trimethylammonium) (PEG-PVBTMA) and poly(ethylene glycol)-block-poly(l-lysine) (PEG-PLK). After complexation with a common polyanion, poly(sodium acrylate), the resulting PCMs were characterized by dynamic light scattering (DLS) and small angle X-ray scattering (SAXS). We observed uniform assemblies of spherical micelles with a diameter ~1.5–2× larger when PMPC-PVBTMA was used compared to PEG-PLK and PEG-PVBTMA via SAXS and DLS. In addition, PEG-PLK PCMs proved most resistant to dissolution by both monovalent and divalent salt, followed by PEG-PVBTMA then PMPC-PVBTMA. All micelle systems were serum stable in 100% fetal bovine serum over the course of 8 h by time-resolved DLS, demonstrating minimal interactions with serum proteins and potential as in vivo drug delivery vehicles. This thorough study of the synthesis, assembly, and characterization of zwitterionic polymers in PCMs advances the design space for charge-driven micelle assemblies.},
doi = {10.3390/molecules25112553},
journal = {Molecules},
number = 11,
volume = 25,
place = {United States},
year = {Sat May 30 00:00:00 EDT 2020},
month = {Sat May 30 00:00:00 EDT 2020}
}
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