Clonal culturing of human embryonic stem cells on laminin-521/E-cadherin matrix in defined and xeno-free environment

Nat Commun. 2014:5:3195. doi: 10.1038/ncomms4195.

Abstract

Lack of robust methods for establishment and expansion of pluripotent human embryonic stem (hES) cells still hampers development of cell therapy. Laminins (LN) are a family of highly cell-type specific basement membrane proteins important for cell adhesion, differentiation, migration and phenotype stability. Here we produce and isolate a human recombinant LN-521 isoform and develop a cell culture matrix containing LN-521 and E-cadherin, which both localize to stem cell niches in vivo. This matrix allows clonal derivation, clonal survival and long-term self-renewal of hES cells under completely chemically defined and xeno-free conditions without ROCK inhibitors. Neither LN-521 nor E-cadherin alone enable clonal survival of hES cells. The LN-521/E-cadherin matrix allows hES cell line derivation from blastocyst inner cell mass and single blastomere cells without a need to destroy the embryo. This method can facilitate the generation of hES cell lines for development of different cell types for regenerative medicine purposes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cadherins*
  • Cell Culture Techniques*
  • Embryonic Stem Cells / physiology*
  • Humans
  • Integrin alpha6beta1 / metabolism
  • Karyotyping
  • Laminin*
  • Phosphatidylinositol 3-Kinases / metabolism
  • Proto-Oncogene Proteins c-akt / metabolism

Substances

  • Cadherins
  • Integrin alpha6beta1
  • Laminin
  • laminin 11 protein, human
  • Phosphatidylinositol 3-Kinases
  • Proto-Oncogene Proteins c-akt

Associated data

  • GEO/GSE53436