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Reversible Interactions of Proteins with Mixed Shell Polymeric Micelles: Tuning the Surface Hydrophobic/Hydrophilic Balance toward Efficient Artificial Chaperones
- Source :
- Langmuir : the ACS journal of surfaces and colloids. 32(11)
- Publication Year :
- 2016
-
Abstract
- Molecular chaperones can elegantly fine-tune its hydrophobic/hydrophilic balance to assist a broad spectrum of nascent polypeptide chains to fold properly. Such precious property is difficult to be achieved by chaperone mimicking materials due to limited control of their surface characteristics that dictate interactions with unfolded protein intermediates. Mixed shell polymeric micelles (MSPMs), which consist of two kinds of dissimilar polymeric chains in the micellar shell, offer a convenient way to fine-tune surface properties of polymeric nanoparticles. In the current work, we have fabricated ca. 30 kinds of MSPMs with finely tunable hydrophilic/hydrophobic surface properties. We investigated the respective roles of thermosensitive and hydrophilic polymeric chains in the thermodenaturation protection of proteins down to the molecular structure. Although the three kinds of thermosensitive polymers investigated herein can form collapsed hydrophobic domains on the micellar surface, we found distinct capability to capture and release unfolded protein intermediates, due to their respective affinity for proteins. Meanwhile, in terms of the hydrophilic polymeric chains in the micellar shell, poly(ethylene glycol) (PEG) excels in assisting unfolded protein intermediates to refold properly via interacting with the refolding intermediates, resulting in enhanced chaperone efficiency. However, another hydrophilic polymer-poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) severely deteriorates the chaperone efficiency of MSPMs, due to its protein-resistant properties. Judicious combination of thermosensitive and hydrophilic chains in the micellar shell lead to MSPM-based artificial chaperones with optimal efficacy.
- Subjects :
- Circular dichroism
Protein Denaturation
Carbonic Anhydrase I
Surface Properties
Phosphorylcholine
Polyesters
02 engineering and technology
010402 general chemistry
01 natural sciences
Micelle
Protein Refolding
chemistry.chemical_compound
Dynamic light scattering
Microscopy, Electron, Transmission
Polymethacrylic Acids
Biomimetic Materials
Electrochemistry
Organic chemistry
Molecule
General Materials Science
Spectroscopy
Micelles
chemistry.chemical_classification
biology
Circular Dichroism
technology, industry, and agriculture
Temperature
Surfaces and Interfaces
Polymer
021001 nanoscience & nanotechnology
Condensed Matter Physics
Dynamic Light Scattering
0104 chemical sciences
Polyester
chemistry
Chemical engineering
Chaperone (protein)
biology.protein
Ethylene Glycols
0210 nano-technology
Ethylene glycol
Hydrophobic and Hydrophilic Interactions
Subjects
Details
- ISSN :
- 15205827
- Volume :
- 32
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Langmuir : the ACS journal of surfaces and colloids
- Accession number :
- edsair.doi.dedup.....f2a156776137e72a6c87eb69f0d207a7