Issue 21, 2022

An efficient photothermal–chemotherapy platform based on a polyacrylamide/phytic acid/polydopamine hydrogel

Abstract

In this work, the polyacrylamide/phytic acid/polydopamine (termed as PAAM/PA/PDA) hydrogel is used as a drug loading matrix and photothermal conversion reagent, which is prepared by copolymerization of dopamine with acrylamide through a phytic acid crosslinker. Due to the porous structure of PAAM and strong near-infrared light (NIR)-absorption of PDA, the PAAM/PA/PDA hydrogel exhibits a high doxorubicin (DOX)-loading capacity (170 mg g−1) and efficient photothermal transduction efficiency (47.4%) even under low power density 808 nm NIR laser (0.75 W cm−2) irradiation, which is superior to those of most conventional photothermal conversion agents reported in the literature. With NIR laser irradiation, the PAAM/PA/PDA hydrogel loaded with DOX (termed as PAAM/PA/PDA/DOX) shows excellent synergistic interaction between photothermal therapy (PTT) and enhanced chemotherapy, resulting in the completely suppressed growth of mouse-bearing SW620 tumors. Furthermore, the PAAM/PA/PDA hydrogel shows good physicochemical stability, negligible cytotoxicity and low toxicity in vivo. All these characteristics render the as-prepared PAAM/PA/PDA hydrogel promising for biomedical applications.

Graphical abstract: An efficient photothermal–chemotherapy platform based on a polyacrylamide/phytic acid/polydopamine hydrogel

Supplementary files

Article information

Article type
Paper
Submitted
28 Cig 2022
Accepted
16 Agd 2022
First published
18 Agd 2022

J. Mater. Chem. B, 2022,10, 4012-4019

An efficient photothermal–chemotherapy platform based on a polyacrylamide/phytic acid/polydopamine hydrogel

Z. Zhao, H. Zhang, H. Chen, Y. Xu, L. Ma and Z. Wang, J. Mater. Chem. B, 2022, 10, 4012 DOI: 10.1039/D2TB00677D

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