KDR activating mutations in human angiosarcomas are sensitive to specific kinase inhibitors Academic Article uri icon

Overview

MeSH Major

  • Hemangiosarcoma
  • Mutation
  • Vascular Endothelial Growth Factor Receptor-2

abstract

  • Angiosarcomas (AS) represent a heterogeneous group of malignant vascular tumors occurring not only in different anatomic locations but also in distinct clinical settings, such as radiation or associated chronic lymphedema. Although representing only 1% to 2% of soft tissue sarcomas, vascular sarcomas provide unique insight into the general process of tumor angiogenesis. However, no molecular candidates have been identified to guide a specific therapeutic intervention. By expression profiling, AS show distinct up-regulation of vascular-specific receptor tyrosine kinases, including TIE1, KDR, SNRK, TEK, and FLT1. Full sequencing of these five candidate genes identified 10% of patients harboring KDR mutations. A KDR-positive genotype was associated with strong KDR protein expression and was restricted to the breast anatomic site with or without prior exposure to radiation. Transient transfection of KDR mutants into COS-7 cells showed ligand-independent activation of the kinase, which was inhibited by specific KDR inhibitors. These data provide a basis for the activity of vascular endothelial growth factor receptor-directed therapy in the treatment of primary and radiation-induced AS.

publication date

  • October 13, 2009

Research

keywords

  • Academic Article

Identity

Language

  • eng

PubMed Central ID

  • PMC2763376

Digital Object Identifier (DOI)

  • 10.1158/0008-5472.CAN-09-2068

PubMed ID

  • 19723655

Additional Document Info

start page

  • 7175

end page

  • 9

volume

  • 69

number

  • 18