Details

Autor(en) / Beteiligte

• Takayama, Hisashi
• LaRochelle, William J.
• Sharp, Richard
• Otsuka, Toshiyuki
• Kriebel, Paul
• Anver, Miriam
• Aaronson, Stuart A.
• Merlino, Glenn

Titel

Diverse Tumorigenesis Associated with Aberrant Development in Mice Overexpressing Hepatocyte Growth Factor/Scatter Factor

Ist Teil von

• Proceedings of the National Academy of Sciences - PNAS, 1997-01, Vol.94 (2), p.701-706

Ort / Verlag

United States: National Academy of Sciences of the United States of America

Erscheinungsjahr

1997

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• Hepatocyte growth factor/scatter factor (HGF/SF) is a mesenchymally derived, multifunctional paracrine regulator possessing mitogenic, motogenic, and morphogenetic activities in cultured epithelial cells containing its tyrosine kinase receptor, Met. c-met has been implicated in oncogenesis through correlation of expression with malignant phenotype in specific cell lines and tumors. Paradoxically, however, HGF/SF can also inhibit the growth of some tumor cells. To elucidate the oncogenic role of HGF/SF in vivo, transgenic mice were created such that HGF/SF was inappropriately targeted to a variety of tissues. HGF/SF transgenic mice developed a remarkably broad array of histologically distinct tumors of both mesenchymal and epithelial origin. Many neoplasms arose from tissues exhibiting abnormal development, including the mammary gland, skeletal muscle, and melanocytes, suggesting a functional link between mechanisms regulating morphogenesis and those promoting tumorigenesis. Most neoplasms, especially melanomas, demonstrated overexpression of both the HGF/SF transgene and endogenous c-met, and had enhanced Met kinase activity, strongly suggesting that autocrine signaling broadly promotes tumorigenesis. Thus, subversion of normal mesenchymal-epithelial paracrine regulation through the forced misdirection of HGF/SF expression induces aberrant morphogenesis and subsequent malignant transformation of cells of diverse origin.