Outstanding protein-repellent feature of soft nanoparticles based on poly(N-(2-hydroxypropyl) methacrylamide) outer shells

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F20%3A00524087" target="_blank" >RIV/61389013:_____/20:00524087 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0021979720304975?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0021979720304975?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcis.2020.04.048" target="_blank" >10.1016/j.jcis.2020.04.048</a>

Result language

angličtina

Original language name

Outstanding protein-repellent feature of soft nanoparticles based on poly(N-(2-hydroxypropyl) methacrylamide) outer shells

Original language description

The influences of the hydrophilic chain length, morphology and chemical nature have been probed with regard to the adsorption of model proteins onto the surface of soft nanoparticles (crew-cut micelles and polymersomes). The investigations were based on assemblies manufactured from PEOm-b-PLAn (poly(ethylene oxide)-b-poly(lactic acid)), which is a well-established block copolymer platform towards the manufacturing of drug delivery vehicles, and PHPMAm-b-PDPAn (poly([N-(2-hydroxypropyl)]methacrylamide)-b-poly[2-(diisopropylamino)ethyl methacrylate]), which is pH-responsive and therefore potentially able to target damaged cells in slightly acid microenvironments. Besides, protein adsorption onto PHPMA-stabilized nanoparticles has been seldom explored up-to-date. The morphologies were produced using two different approaches (nanoprecipitation and thin-film hydration) and afterwards, the protein-repelling property of the assemblies in model protein environments (BSA - bovine serum albumin, lysozyme and IgG - immunoglobulin G) was evaluated. We report that, regardless the morphology, PHPMA35-b-PDPA42 block copolymer assemblies are highly stable with negligible protein binding. On the other hand, PEOm-b-PLAn nanostructures are susceptible to protein adsorption and the phenomenon is protein-dependent. The nanoparticles are more susceptible to adsorption of the model positively charged biomacromolecule (lysozyme). The adsorption phenomenon is thermodynamically complex with simultaneous endothermic and exothermic processes involved. Although the experimental data highlight that qualitatively the morphology plays negligible effects on the event, fluorescence spectroscopy measurements evidenced that the binding is stronger onto the surface of nanoparticles stabilized by shorter hydrophilic shells. Nevertheless, the adsorption does not affect the secondary structure of the model proteins as confirmed by circular dichroism spectroscopy. Overall, by comparing soft nanoparticles stabilized by PEO and PHPMA, the latter is herein proved to be a better choice towards the manufacturing of non-fouling structures (either core-shell or hollow spheres) where even a reasonably short hydrophilic chain confers outstanding protein-repelling feature.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10404 - Polymer science

Project

<a href="/en/project/GA17-09998S" target="_blank" >GA17-09998S: Nanopartilces sensitive to reactive oxygen species for biomedical purposes</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Colloid and Interface Science

ISSN

0021-9797

e-ISSN

—

Volume of the periodical

574

Issue of the periodical within the volume

15 August

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

260-271

UT code for WoS article

000536179400025

EID of the result in the Scopus database

2-s2.0-85083421287