Nanoscale Film Fabrication of Various Peptides on Neural Stem Cell Chip

Abstract

Modification of peptide on the electrode surface is very important issue for achieving valuable information from cell chip. In this study, various kinds of cysteine-containing peptide were fabricated on the electrode surface to enhance the electrochemical signals, cell spreading, and proliferation of rat neural stem cells. Different kinds of lysine-rich and RGD peptides were self-assembled on the gold nanoparticle modified ITO surfaces via strong Au-S chemical bond, followed by seeding neural stem cells (NE-4C) on its surface. As a result, K-MAP-C peptide consists of the quadruple branches of lysine chains and cysteine terminal showed outstanding characteristics respect to the improvement of redox signals, cell spreading and proliferation on electrode surface. Hence, our stem cell chip composed of lysine-rich peptide modified electrode can be usefully applied as efficient stem cell research tool.

<I>In Vitro</I> and <I>In Vivo</I> Evaluation of Pectin/Copper Exchanged Faujasite Composite Membranes

“…9 Kim et al, have fabricated graphene oxide embedded nanofilms for biocompatible neuronal interfaces. 10 Bao et al, have confirmed the hemostatic potential and antimicrobial property of berberine loaded electrospun polycaprolactone nanofibrous membrane. 11 Delivered by Ingenta to: Rice University IP: 91.215.137.70 On: Sat, 11 Jun 2016 10: 45:46 Copyright: American Scientific Publishers Several biopolymers are used for the preparation of biocompatible films or membranes including chitosan, 12 alginate, 13 pectin, 14 gelatin, 15 carboxymethyl cellulose, 16 polyurethanes, 17 and hyaluronic acid.…”

Cell-binding peptides on the material surface guide stem cell fate of adhesion, proliferation and differentiation

“…To generate a gold-coated surface grafted with peptides, the gold-coated surface is immersed in aqueous alkanethiol solutions, which can be conjugated with bioactive peptides to generate SAMs, 91,[224][225][226][227][228] or the gold-coated surface is immersed with aqueous cysteine-containing peptide solution. 1,[229][230][231] 3.2.3.2. Carbodiimide reaction.…”