Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications

Targeted and controlled drug delivery employing “smart materials” is a widely investigated field, within which stimuli-responsive polymers, particularly those which are thermo-responsive, have received considerable attention. Thermo-responsive polymers have facilitated the formulation of in situ gel...

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Main Authors: Taskeen Sarwan, Pradeep Kumar, Yahya E. Choonara, Viness Pillay
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-03-01
Series:Frontiers in Materials
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fmats.2020.00073/full
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author Taskeen Sarwan
Pradeep Kumar
Yahya E. Choonara
Viness Pillay
author_facet Taskeen Sarwan
Pradeep Kumar
Yahya E. Choonara
Viness Pillay
author_sort Taskeen Sarwan
collection DOAJ
description Targeted and controlled drug delivery employing “smart materials” is a widely investigated field, within which stimuli-responsive polymers, particularly those which are thermo-responsive, have received considerable attention. Thermo-responsive polymers have facilitated the formulation of in situ gel forming systems which undergo a sol-gel transition at physiological body temperature, and have revolutionized the fields of tissue engineering, cell encapsulation, and controlled, sustained delivery of both drugs and genes. However, the use of single thermo-responsive polymers in the creation of these systems has posed numerous problems in terms of physico-mechanical properties, such as poor mechanical strength, high critical gelation concentrations (CGC) resulting in increased production costs and solutions that are too viscous, toxicity, as well as gelation temperatures that are incompatible with physiological body temperatures. Hybridization of these thermo-responsive polymers with other polymers has therefore been employed, resulting in the creation of tailor-made drug delivery systems that have optimal gelation temperatures and concentrations, ideal viscosities and improved gel strengths. This article reviews various thermo-responsive polymers that have been employed in the formulation of thermo-gelling systems. Special attention has been given to the hybridization of each of these polymers, the resulting systems that have been created, and their biomedical applications.
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spelling doaj.art-93f9156c9afc402a89a3aecab8b5e16c2022-12-21T18:24:07ZengFrontiers Media S.A.Frontiers in Materials2296-80162020-03-01710.3389/fmats.2020.00073514673Hybrid Thermo-Responsive Polymer Systems and Their Biomedical ApplicationsTaskeen SarwanPradeep KumarYahya E. ChoonaraViness PillayTargeted and controlled drug delivery employing “smart materials” is a widely investigated field, within which stimuli-responsive polymers, particularly those which are thermo-responsive, have received considerable attention. Thermo-responsive polymers have facilitated the formulation of in situ gel forming systems which undergo a sol-gel transition at physiological body temperature, and have revolutionized the fields of tissue engineering, cell encapsulation, and controlled, sustained delivery of both drugs and genes. However, the use of single thermo-responsive polymers in the creation of these systems has posed numerous problems in terms of physico-mechanical properties, such as poor mechanical strength, high critical gelation concentrations (CGC) resulting in increased production costs and solutions that are too viscous, toxicity, as well as gelation temperatures that are incompatible with physiological body temperatures. Hybridization of these thermo-responsive polymers with other polymers has therefore been employed, resulting in the creation of tailor-made drug delivery systems that have optimal gelation temperatures and concentrations, ideal viscosities and improved gel strengths. This article reviews various thermo-responsive polymers that have been employed in the formulation of thermo-gelling systems. Special attention has been given to the hybridization of each of these polymers, the resulting systems that have been created, and their biomedical applications.https://www.frontiersin.org/article/10.3389/fmats.2020.00073/fullthermo-responsive polymershybridchitosan-β-glycerophosphatepNIPAAmpluroniccellulose
spellingShingle Taskeen Sarwan
Pradeep Kumar
Yahya E. Choonara
Viness Pillay
Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications
Frontiers in Materials
thermo-responsive polymers
hybrid
chitosan-β-glycerophosphate
pNIPAAm
pluronic
cellulose
title Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications
title_full Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications
title_fullStr Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications
title_full_unstemmed Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications
title_short Hybrid Thermo-Responsive Polymer Systems and Their Biomedical Applications
title_sort hybrid thermo responsive polymer systems and their biomedical applications
topic thermo-responsive polymers
hybrid
chitosan-β-glycerophosphate
pNIPAAm
pluronic
cellulose
url https://www.frontiersin.org/article/10.3389/fmats.2020.00073/full
work_keys_str_mv AT taskeensarwan hybridthermoresponsivepolymersystemsandtheirbiomedicalapplications
AT pradeepkumar hybridthermoresponsivepolymersystemsandtheirbiomedicalapplications
AT yahyaechoonara hybridthermoresponsivepolymersystemsandtheirbiomedicalapplications
AT vinesspillay hybridthermoresponsivepolymersystemsandtheirbiomedicalapplications