In vitro biocompatibility study of EDC/NHS cross-linked silk fibroin scaffold with olfactory ensheathing cells

14Citations
Citations of this article
27Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

In this paper, we investigated silk fibroin (SF) cross-linked by 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide (EDC/NHS) and its biocompatibility with olfactory ensheathing cells (OECs). After cross-linked with different concentrations of EDC/NHS solutions, SF scaffolds were analyzed by different techniques such as scanning electron microscopy, Fourier transform infrared spectra, x-ray diffraction, tensile machine and water contact angle assay. As to their structures, we found 4.5% EDC/NHS cross-linked SF possessed a more significant increase of β-sheet and a decrease of α-helix than 1.5% group. These changes helped SF achieve excellent mechanical properties. While more remarkable improvement of hydrophilicity was seen in 1.5% EDC/NHS treated SF. Immunofluorescence, MTT, Annexin-V/PI and ELISA analysis were then conducted to determine the states and functions of OECs on the scaffolds. OECs on 4.5% EDC/NHS cross-linked SF seemed insufficient to spread, and the proliferation was limited on 4 and 6 days. Moreover, 4.5% EDC/NHS exerted adverse effects on cell survival and nerve growth factor (NGF) secretion at day 4, but not 1.5% EDC/NHS. Taken together, SF scaffolds showed improved physical and hydrophilic properties through cross-linking. 1.5% EDC/NHS cross-linked SF scaffolds showed significant advantages between mechanical property and the states and functions with OECs, which has the potential to be used for neural repairing.

Cite

CITATION STYLE

APA

Li, S., Wu, P., Ji, Z., Zhang, Y., Zhang, P., He, Y., & Shen, Y. (2023). In vitro biocompatibility study of EDC/NHS cross-linked silk fibroin scaffold with olfactory ensheathing cells. Journal of Biomaterials Science, Polymer Edition, 34(4), 482–496. https://doi.org/10.1080/09205063.2022.2135076

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free