Format

Send to

Choose Destination
Science. 2004 Feb 27;303(5662):1352-5. Epub 2004 Jan 22.

Selective differentiation of neural progenitor cells by high-epitope density nanofibers.

Author information

1
Institute for Bioengineering and Nanoscience in Advanced Medicine, Northwestern University, Chicago, IL 60611, USA. gsilva@ucsd.edu

Abstract

Neural progenitor cells were encapsulated in vitro within a three-dimensional network of nanofibers formed by self-assembly of peptide amphiphile molecules. The self-assembly is triggered by mixing cell suspensions in media with dilute aqueous solutions of the molecules, and cells survive the growth of the nanofibers around them. These nanofibers were designed to present to cells the neurite-promoting laminin epitope IKVAV at nearly van der Waals density. Relative to laminin or soluble peptide, the artificial nanofiber scaffold induced very rapid differentiation of cells into neurons, while discouraging the development of astrocytes. This rapid selective differentiation is linked to the amplification of bioactive epitope presentation to cells by the nanofibers.

PMID:
14739465
DOI:
10.1126/science.1093783
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for HighWire
Loading ...
Support Center