Differential inhibition sensitivities of MET mutants to the small molecule inhibitor SU11274

Zimmer, Yitzhak; Vaseva, Angelina V; Medová, Michaela; Streit, Bruno; Blank-Liss, Wieslawa; Greiner, Richard H; Schiering, Nikolaus; Aebersold, Daniel M (2010). Differential inhibition sensitivities of MET mutants to the small molecule inhibitor SU11274. Cancer letters, 289(2), pp. 228-36. Amsterdam: Elsevier 10.1016/j.canlet.2009.08.017

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Point mutations emerge as one of the rate-limiting steps in tumor response to small molecule inhibitors of protein kinases. Here we characterized the response of the MET mutated variants, V1110I, V1238I, V1206L and H1112L to the small molecule SU11274. Our results reveal a distinct inhibition pattern of the four mutations with IC(50) values for autophosphorylation inhibition ranging between 0.15 and 1.5muM. Differences were further seen on the ability of SU11274 to inhibit phosphorylation of downstream MET transducers such as AKT, ERK, PLCgamma and STAT3 and a variety of MET-dependent biological endpoints. In all the assays, H1112L was the most sensitive to SU11274, while V1206L was less affected under the used concentration range. The differences in responses to SU11274 are discussed based on a structural model of the MET kinase domain.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Radiation Oncology
UniBE Contributor:	Zimmer, Yitzhak, Medova, Michaela, Aebersold, Daniel Matthias
ISSN:	0304-3835
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:07
Last Modified:	02 Mar 2023 23:20
Publisher DOI:	10.1016/j.canlet.2009.08.017
PubMed ID:	19783361
Web of Science ID:	000278340900011
URI:	https://boris.unibe.ch/id/eprint/126 (FactScience: 196284)