TY - JOUR
T1 - Wa5 is a novel ENU-induced antimorphic allele of the epidermal growth factor receptor
AU - Lee, Daekee
AU - Cross, Sally H.
AU - Strunk, Karen E.
AU - Morgan, Joanne E.
AU - Bailey, Candice L.
AU - Jackson, Ian J.
AU - Threadgill, David W.
PY - 2004/7
Y1 - 2004/7
N2 - Mice heterozygous for the N-ethyl-N-nitrosourea- induced Waved-5 (Wa5) mutation, isolated in a screen for dominant, visible mutations, exhibit a wavy coat similar to mice homozygous for the recessive Tgfawa1 or Egfrwa2 alleles. In this study, we show that Wa5 is a new allele of Egfr (EgfrWa5) containing a missense mutation within the coding region for the highly conserved DFG motif of the tyrosine kinase domain. In vivo analysis of placental development, modification of ApcMin tumorigenesis, and levels of EGF-dependent EGFR phosphorylation demonstrates that EgfrWa5 functions as an antimorphic allele, recapitulating many abnormalities associated with reduced EGFR activity. Furthermore, Egfr wa5 enhances EgfrWa2 compound or Tgfatm1Dcl double mutants exposing additional EGFR-dependent phenotypes. In vitro characterization shows that the antimorphic property of EgfrWa5 is caused by a kinase-dead receptor acting as a dominant negative.
AB - Mice heterozygous for the N-ethyl-N-nitrosourea- induced Waved-5 (Wa5) mutation, isolated in a screen for dominant, visible mutations, exhibit a wavy coat similar to mice homozygous for the recessive Tgfawa1 or Egfrwa2 alleles. In this study, we show that Wa5 is a new allele of Egfr (EgfrWa5) containing a missense mutation within the coding region for the highly conserved DFG motif of the tyrosine kinase domain. In vivo analysis of placental development, modification of ApcMin tumorigenesis, and levels of EGF-dependent EGFR phosphorylation demonstrates that EgfrWa5 functions as an antimorphic allele, recapitulating many abnormalities associated with reduced EGFR activity. Furthermore, Egfr wa5 enhances EgfrWa2 compound or Tgfatm1Dcl double mutants exposing additional EGFR-dependent phenotypes. In vitro characterization shows that the antimorphic property of EgfrWa5 is caused by a kinase-dead receptor acting as a dominant negative.
UR - http://www.scopus.com/inward/record.url?scp=2942753999&partnerID=8YFLogxK
U2 - 10.1007/s00335-004-2384-2
DO - 10.1007/s00335-004-2384-2
M3 - Article
C2 - 15366372
AN - SCOPUS:2942753999
SN - 0938-8990
VL - 15
SP - 525
EP - 536
JO - Mammalian Genome
JF - Mammalian Genome
IS - 7
ER -