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Biochem Biophys Res Commun. 2008 Mar 14;367(3):573-7. doi: 10.1016/j.bbrc.2007.12.177. Epub 2008 Jan 8.

Caspase cleavage of the MET receptor generates an HGF interfering fragment.

Author information

1
UMR-8161, Institut de Biologie de Lille, CNRS, Université de Lille-1, Université de Lille-2, Institut Pasteur de Lille, BP 447, F-59021 Lille Cedex, France.

Abstract

The MET tyrosine kinase receptor activated by its ligand HGF/SF, induces several cellular responses, including survival. Nonetheless, the MET receptor is cleaved in stress conditions by caspases within its intracellular region, generating a 40kDa fragment, p40 MET, with pro-apoptotic properties. Here, we established that this cleavage splits the receptor at the juxtamembrane ESVD site, causing the concomitant generation of p100 MET, corresponding to the entire extracellular region of the MET receptor still spanning the membrane. This fragment is able to bind HGF/SF and to prevent HGF-dependent signaling downstream of full MET, demonstrating its function as a decoy receptor.

PMID:
18187039
DOI:
10.1016/j.bbrc.2007.12.177
[Indexed for MEDLINE]

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