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Title: Kinetics of temperature response of PEO-b-PNIPAM-b-PAA triblock terpolymer aggregates and of their complexes with lysozyme

Abstract

We present the kinetics of temperature response of a PEO-b-PNIPAM-b-PAA triblock terpolymer and of its complexes with lysozyme in aqueous solution. It is found that during the coil-to-globule transition of PNIPAM new bonds within the polymer aggregates are created, making the transition of the aggregates partially irreversible. This effect is also found for the protein loaded PEO-b-PNIPAM-b-PAA aggregates whereas in this case protein globules appear to enhance the formation of bonds, making the transition totally irreversible. The internal dynamics of both aggregates and complexes are “frozen” once the temperature is increased upon PINIPAM's LCST in water and remain so even when the temperature drops below LCST. As a result, we investigate the complexation kinetics of lysozyme and PEO-b-PNIPAM-b-PAA and observe that it occurs in two stages, one where protein globules adsorb on single pre-formed aggregates and one where protein globules cause inter-aggregate clustering.

Authors:
 [1];  [1];  [2];  [1]
  1. National Hellenic Research Foundation, Athens (Greece)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1237639
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Polymer
Additional Journal Information:
Journal Volume: 83; Journal Issue: C; Journal ID: ISSN 0032-3861
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; thermoresponsive polymers; protein complexation; kinetics

Citation Formats

Papagiannopoulos, Aristeidis, Meristoudi, Anastasia, Hong, Kunlun, and Pispas, Stergios. Kinetics of temperature response of PEO-b-PNIPAM-b-PAA triblock terpolymer aggregates and of their complexes with lysozyme. United States: N. p., 2015. Web. https://doi.org/10.1016/j.polymer.2015.12.023.
Papagiannopoulos, Aristeidis, Meristoudi, Anastasia, Hong, Kunlun, & Pispas, Stergios. Kinetics of temperature response of PEO-b-PNIPAM-b-PAA triblock terpolymer aggregates and of their complexes with lysozyme. United States. https://doi.org/10.1016/j.polymer.2015.12.023
Papagiannopoulos, Aristeidis, Meristoudi, Anastasia, Hong, Kunlun, and Pispas, Stergios. Fri . "Kinetics of temperature response of PEO-b-PNIPAM-b-PAA triblock terpolymer aggregates and of their complexes with lysozyme". United States. https://doi.org/10.1016/j.polymer.2015.12.023. https://www.osti.gov/servlets/purl/1237639.
@article{osti_1237639,
title = {Kinetics of temperature response of PEO-b-PNIPAM-b-PAA triblock terpolymer aggregates and of their complexes with lysozyme},
author = {Papagiannopoulos, Aristeidis and Meristoudi, Anastasia and Hong, Kunlun and Pispas, Stergios},
abstractNote = {We present the kinetics of temperature response of a PEO-b-PNIPAM-b-PAA triblock terpolymer and of its complexes with lysozyme in aqueous solution. It is found that during the coil-to-globule transition of PNIPAM new bonds within the polymer aggregates are created, making the transition of the aggregates partially irreversible. This effect is also found for the protein loaded PEO-b-PNIPAM-b-PAA aggregates whereas in this case protein globules appear to enhance the formation of bonds, making the transition totally irreversible. The internal dynamics of both aggregates and complexes are “frozen” once the temperature is increased upon PINIPAM's LCST in water and remain so even when the temperature drops below LCST. As a result, we investigate the complexation kinetics of lysozyme and PEO-b-PNIPAM-b-PAA and observe that it occurs in two stages, one where protein globules adsorb on single pre-formed aggregates and one where protein globules cause inter-aggregate clustering.},
doi = {10.1016/j.polymer.2015.12.023},
journal = {Polymer},
number = C,
volume = 83,
place = {United States},
year = {2015},
month = {12}
}

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    Works referencing / citing this record:

    Formation of complexes in aqueous solutions of amphiphilic triblock polyelectrolytes of different topologies and an oppositely charged protein
    journal, January 2018

    • Papagiannopoulos, Aristeidis; Karayianni, Maria; Pispas, Stergios
    • Soft Matter, Vol. 14, Issue 15
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