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Development Genes and Evolution

, Volume 207, Issue 1, pp 19–28 | Cite as

Inhibitory control of neural differentiation in mammalian cells

  • Pamela A. Hoodless
  • A. Hemmati-Brivanlou
ORIGINAL ARTICLE

Abstract

 In Xenopus embryos, a truncated type II activin receptor (Δ1XAR1), capable of blocking signals by several transforming growth factor (TGF)-β family members, can induce neural tissue suggesting neural fate is under inhibitory control. Activin and bone morphogenetic protein 4 (BMP4) can act as neural inhibitors but only BMP4 can induce epidermis in Xenopus ectodermal cells. We have used the pluripotent mouse embryonal carcinoma cell line P19 to examine whether the mechanisms of ectodermal cell fate decisions are conserved among vertebrates. We show that a P19 cell line expressing Δ1XAR1 will differentiate into neurons. In addition, BMP4 inhibits retinoic acid (RA)-induced neural differentiation of P19 cells and induces keratin expression. These results suggest that in mammals as in amphibians neural fate is under inhibitory control and BMP4 can alter ectodermal differentiation.

Key words Neural induction P19 cells Epidermal induction BMP Activin receptor 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Pamela A. Hoodless
    • 1
  • A. Hemmati-Brivanlou
    • 1
  1. 1.The Rockefeller University, 1230 York Avenue, New York, NY 10021–6339, USAUS

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