The Wilms tumor suppressor WT1 encodes a transcriptional activator of amphiregulin. Academic Article uri icon

Overview

abstract

  • WT1 encodes a zinc finger transcription factor implicated in kidney differentiation and tumorigenesis. In reporter assays, WT1 represses transcription from GC- and TC-rich promoters, but its physiological targets remain uncertain. We used hybridization to high-density oligonucleotide arrays to search for native genes whose expression is altered following inducible expression of WT1. The major target of WT1 was amphiregulin, a member of the epidermal growth factor family. The WT1(-KTS) isoform binds directly to the amphiregulin promoter, resulting in potent transcriptional activation. The in vivo expression profile of amphiregulin during fetal kidney development mirrors the highly specific pattern of WT1 itself, and recombinant Amphiregulin stimulates epithelial branching in organ cultures of embryonic mouse kidney. These observations suggest a model for WT1 as a transcriptional regulator during kidney differentiation.

publication date

  • September 3, 1999

Research

keywords

  • DNA-Binding Proteins
  • Glycoproteins
  • Growth Substances
  • Intercellular Signaling Peptides and Proteins
  • Transcription Factors
  • Transcriptional Activation

Identity

Scopus Document Identifier

  • 0033520299

Digital Object Identifier (DOI)

  • 10.1016/s0092-8674(00)80053-7

PubMed ID

  • 10490105

Additional Document Info

volume

  • 98

issue

  • 5