Results
Title

Preparation and Characterization of Polyamidoamine G2.0-Hematin as a Biocatalyst for Fabricating Catecholic Gelatin Hydrogel.

Authors

Ton, Tan Phuoc; Tran, Thi Yen Nhi; Dang, Le Hang; Nguyen, Kim Thi Hoang; Doan, Phuong; Nguyen, Van Toan; Nguyen, Dinh Trung; Le, Bao Huy; Tran, Ngoc Quyen; Nguyen, Bich Tram

Abstract

In this study, we report that an enzyme-mimicking biocatalyst polyamidoamine (PAMAM) dendrimer G2.0-hematin (G2.0-He) was fabricated successfully. The chemical structure of G2.0-He was verified by 1H NMR and FT-IR spectroscopy. G2.0-He exhibited a size distribution from 11.6 ± 1.7 nm to 12.5 ± 2.9 nm and a zeta potential from 32.5 mV to 25.6 mV along with the enhancement of the hematin conjugation degree. The relative activity of G2.0-He was evaluated based on pyrogallol oxidation reactions at pH = 7. The results showed that G2.0-He was more stable than horseradish peroxidase (HRP) enzyme in high H2O2 concentrations. The HRP-mimic ability of G2.0-He was also confirmed by the catalyzation when preparing catecholic gelatin hydrogels under mild conditions. Moreover, our results also revealed that these hydrogels performed with excellent cytocompatibility in an in vitro study and could be used as a potential scaffold for adhesion and proliferation of fibroblast cells. The obtained results indicated that G2.0-He is a suitable platform for altering the HRP enzyme in several biomedical applications.

Subjects

ENZYMES; POLYAMIDOAMINE dendrimers; GELATIN; HORSERADISH peroxidase; CHEMICAL structure; NUCLEAR magnetic resonance spectroscopy; ZETA potential

Publication

International Journal of Polymer Science, 2021, p1

ISSN

1687-9422

Publication type

Academic Journal

DOI

10.1155/2021/5563229