The potential roles of hepatocyte growth factor (HGF)-MET pathway inhibitors in cancer treatment
Rahul A Parikh,1 Peng Wang,2 Jan H Beumer,3 Edward Chu,1 Leonard J Appleman1
1Division of Hematology-Oncology, University of Pittsburgh School of Medicine, Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA; 2Division of Medical Oncology, University of Kentucky College of Medicine, Markey Cancer Center, Lexington, KY, USA; 3University of Pittsburgh School of Pharmacy, Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
Abstract: MET is located on chromosome 7q31 and is a proto-oncogene that encodes for hepatocyte growth factor (HGF) receptor, a member of the receptor tyrosine kinase (RTK) family. HGF, also known as scatter factor (SF), is the only known ligand for MET. MET is a master regulator of cell growth and division (mitogenesis), mobility (motogenesis), and differentiation (morphogenesis); it plays an important role in normal development and tissue regeneration. The HGF-MET axis is frequently dysregulated in cancer by MET gene amplification, translocation, and mutation, or by MET or HGF protein overexpression. MET dysregulation is associated with an increased propensity for metastatic disease and poor overall prognosis across multiple tumor types. Targeting the dysregulated HGF-MET pathway is an area of active research; a number of monoclonal antibodies to HGF and MET, as well as small molecule inhibitors of MET, are under development. This review summarizes the key biological features of the HGF-MET axis, its dysregulation in cancer, and the therapeutic agents targeting the HGF-MET axis, which are in development.
Keywords: MET inhibitor, HGF inhibitor, cancer
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