The mis-expression of posterior Hox-4 genes in talpid (ta3) mutant wings correlates with the absence of anteroposterior polarity

J. C. Izpisúa-Belmonte, D. A. Ede, C. Tickle, D. Duboule*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Developing chicken wings homozygous for the talpid (ta3/ta3) mutation are polydactylous and have defects in the establishment of their anteroposterior polarity. We analysed the expression domains of the posteriorly restricted homeobox Hox-4 genes in such mutant wings. The Hox-4 genes are now expressed right across the anteroposterior axis instead of being expressed just posteriorly. This correlates well with the absence of clear morphological differences between the talpid3 digits and reinforces the idea that vertebrate Hox-4 genes are involved in setting up the limb anteroposterior asymmetry.

Original languageEnglish (US)
Pages (from-to)959-963
Number of pages5
JournalDevelopment
Volume114
Issue number4
StatePublished - Apr 1992
Externally publishedYes

Keywords

  • Anteroposterior polarity
  • Chick wing development
  • Hox-4
  • talpid

ASJC Scopus subject areas

  • Anatomy
  • Cell Biology

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