Cytoplasmic polyadenylation of Toll mRNA is required for dorsal-ventral patterning in Drosophila embryogenesis

Jennifer A. Schisa, Sidney Strickland

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Toll encodes a receptor that is critical for dorsal-ventral patterning in the early Drosophila embryo. Previous data have suggested that the accumulation of Toll protein in the embryo temporally correlates with elongation of the poly (A) tail of the message. Here, we demonstrate that Toll mRNA is translationally activated by regulated cytoplasmic polyadenylation. We also identify a 192 nucleotide regulatory element in the Toll 3' UTR that is necessary for robust translational activation of Toll mRNA and also regulates polyadenylation. UV crosslinking analyses suggest that two proteins bind specifically to the 192 nucleotide element. One or both of these proteins may be factors that are required for translational regulation or cytoplasmic polyadenylation. These studies demonstrate that regulated polyadenylation plays a critical role in the Drosophila dorsal-ventral patterning system.

Original languageEnglish
Pages (from-to)2995-3003
Number of pages9
JournalDevelopment
Volume125
Issue number15
StatePublished - Aug 1998

Keywords

  • Dorsal-ventral
  • Drosophila
  • Polyadenylation
  • Toll
  • Translational regulation

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