Genomic structure of the gene for the SH2 and pleckstrin homology domain-containing protein GRB10 and evaluation of its role in Hirschsprung disease

Misha Angrist, Stacey Bolk, Kimberly Bentley, Sudha Nallasamy, Marc K. Halushka, Aravinda Chakravarti

Research output: Contribution to journalArticlepeer-review

Abstract

Hirschsprung disease (HSCR), or congenital aganglionic megacolon, is the most frequent cause of congenital bowel obstruction. Germline mutations in the RET receptor tyrosine kinase have been shown to cause HSCR. Mice that carry null alleles for RET or for its ligand, glial cell line-derived neurotrophic factor (GDNF), both exhibit complete intestinal aganglionosis and renal defects. Recently, the Src homology 2 (SH2) domain-containing protein Grb10 has been shown to interact with RET in vitro and in vivo, early in development. We have confirmed the map location of GRB10 on human chromosome 7, isolated human BACs containing the gene, elucidated its genomic structure, isolated a highly polymorphic microsatellite marker adjacent to exon 14 and scanned the gene for mutations in a large panel of HSCR patients. No evidence of linkage was detected in HSCR kindreds and no mutations were found in patients. These data suggest that while GRB10 may be important for signal transduction in developing embryos, it does not play an obvious role in HSCR.

Original languageEnglish (US)
Pages (from-to)3065-3070
Number of pages6
JournalOncogene
Volume17
Issue number23
DOIs
StatePublished - Dec 10 1998

Keywords

  • GRB-IR
  • GRB10
  • Genomic structure
  • Hirschsprung disease
  • Mapping
  • Mutation detection
  • RET receptor tyrosine kinase

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cancer Research

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