The c-MET proto-oncogene encodes the tyrosine kinase receptor for hepatocyte growth factor (HGF), also known as scatter factor, a potent mitogen and motogen for epithelial cells. The level of the HGF receptor expressed by epithelial cells varies in different growth conditions, being lower in growth arrested confluent monolayers and higher in growing sparse cells. The amount of HGF receptor mRNA increases from 3- to 5-fold after stimulation of confluent monolayers by serum and up to 10-fold after stimulation of protein kinase C by 12-O-tetradecanoylphorbol-13-acetate (TPA). An increased level of the receptor mRNA was also observed after cell stimulation with nanomolar concentration of HGF itself. The effect was transient, dose, and time-dependent. Transcription of a reporter gene under control of the cloned 297 base pair c-MET promoter was also stimulated by serum, TPA, or HGF. The accumulation of specific mRNA is followed by appearance of the HGF receptor precursor protein, which is further processed to the receptor mature form. After HGF stimulation, HGF receptor expression follows c-FOS and c-JUN induction with a peak approximately 4 h. Pretreatment with the protein synthesis inhibitor puromycin strongly reduced the response to HGF, while cycloheximide alone increased the level of the receptor mRNA. These data show that c-MET behaves as a delayed early-response gene and suggest that the HGF response is autoamplified by inducing the specific receptor.
Hepatocyte growth factor (HGF) receptor expression is inducible and is part of the delayed-early response to HGF.
C. Boccaccio,G. Gaudino,G. Gambarotta,F. Galimi,P. Comoglio
Published 1994 in Journal of Biological Chemistry
ABSTRACT
PUBLICATION RECORD
- Publication year
1994
- Venue
Journal of Biological Chemistry
- Publication date
1994-04-29
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- 12-o-tetradecanoylphorbol-13-acetate (tpa)
A phorbol ester used here as a protein kinase C activator to stimulate cellular signaling.
Aliases: TPA, phorbol ester
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - c-fos and c-jun
Immediate-early transcription factors used here as reference genes for the timing of the HGF response.
Aliases: c-FOS, c-JUN
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - c-met promoter
A cloned 297 base pair promoter fragment from c-MET used to test transcriptional regulation in a reporter construct.
Aliases: MET promoter, 297 bp c-MET promoter
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - c-met proto-oncogene
The gene encoding the receptor tyrosine kinase for hepatocyte growth factor in epithelial cells.
Aliases: MET, c-MET
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - cycloheximide
A translation inhibitor used to test how blocking protein synthesis affects HGF receptor mRNA levels.
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - delayed-early response gene
A gene class induced after immediate-early signaling, bridging early stimulation and later transcriptional output.
Aliases: late immediate-early response gene
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - hepatocyte growth factor
A signaling ligand, also called scatter factor, that binds the MET receptor on epithelial cells.
Aliases: HGF, scatter factor
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - hgf receptor mrna
The messenger RNA transcript encoding the hepatocyte growth factor receptor measured in epithelial cells.
Aliases: MET mRNA, HGF receptor transcript
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - puromycin
A protein synthesis inhibitor used to probe whether the HGF response depends on new translation.
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - serum
Growth medium supplement used as a mitogenic stimulus for confluent epithelial monolayers in the experiments.
Aliases: serum stimulation
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review
REFERENCES
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