A synthetic nanofibrillar matrix promotes in vivo-like organization and morphogenesis for cells in culture

Biomaterials. 2005 Oct;26(28):5624-31. doi: 10.1016/j.biomaterials.2005.02.014. Epub 2005 Apr 18.

Abstract

The purpose of this study was to design a synthetic nanofibrillar matrix that more accurately models the porosity and fibrillar geometry of cell attachment surfaces in tissues. The synthetic nanofibrillar matrices are composed of nanofibers prepared by electrospinning a polymer solution of polyamide onto glass coverslips. Scanning electron and atomic force microscopy showed that the nanofibers were organized into fibrillar networks reminiscent of the architecture of basement membrane, a structurally compact form of the extracellular matrix (ECM). NIH 3T3 fibroblasts and normal rat kidney (NRK) cells, when grown on nanofibers in the presence of serum, displayed the morphology and characteristics of their counterparts in vivo. Breast epithelial cells underwent morphogenesis to form multicellular spheroids containing lumens. Hence the synthetic nanofibrillar matrix described herein provides a physically and chemically stable three-dimensional surface for ex vivo growth of cells. Nanofiber-based synthetic matrices could have considerable value for applications in tissue engineering, cell-based therapies, and studies of cell/tissue function and pathology.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Biomimetic Materials / chemistry*
  • Cell Adhesion
  • Cell Culture Techniques / methods
  • Cell Line
  • Cell Size
  • Electrochemistry / methods
  • Epithelial Cells / cytology*
  • Epithelial Cells / physiology
  • Extracellular Matrix / chemistry*
  • Kidney / cytology*
  • Kidney / physiology
  • Materials Testing
  • Mice
  • Molecular Conformation
  • Morphogenesis / physiology
  • NIH 3T3 Cells
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Nylons / chemistry*
  • Particle Size
  • Rats
  • Tissue Engineering / methods*

Substances

  • Nylons