Palmitoylation regulates the intracellular trafficking and stability of c-Met.
Palmitoylation regulates the intracellular trafficking and stability of c-Met.
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DOI:
10.18632/oncotarget.8706
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发表时间:
2016-05-31
期刊:
影响因子:
--
通讯作者:
Cardelli JA
中科院分区:
文献类型:
--
作者:
Coleman DT;Gray AL;Kridel SJ;Cardelli JA
c-Met is a receptor tyrosine kinase whose activity can promote both mitogenic and motogenic phenotypes involved in tissue development and cancer progression. Herein, we report the first evidence that c-Met is palmitoylated and that palmitoylation facilitates its trafficking and stability. Inhibition of palmitoylation reduced the expression of c-Met in multiple cancer cell lines post-transcriptionally. Using surface biotinylation, confocal microscopy, and metabolic labeling we determined that inhibition of palmitoylation reduces the stability of newly synthesized c-Met and causes accumulation at the Golgi. Acyl-biotin exchange and click chemistry-based palmitate labeling indicated the c-Met β-chain is palmitoylated, and site-directed mutagenesis revealed two likely cysteine palmitoylation sites. Moreover, by monitoring palmitoylation kinetics during the biosynthesis and trafficking of c-Met, we revealed that stable palmitoylation occurs in the endoplasmic reticulum prior to cleavage of the 170 kDa c-Met precursor to the mature 140 kDa form. Our data suggest palmitoylation is required for egress from the Golgi for transport to the plasma membrane. These findings introduce palmitoylation as a critical modification of c-Met, providing a novel therapeutic target for c-Met-driven cancers.
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影响因子:
18.3
作者:
Hang, Howard C.;Wilson, John P.;Charron, Guillaume
通讯作者:
Charron, Guillaume
DOI:
10.1038/labinvest.2008.97
发表时间:
2008-12
期刊:
Laboratory investigation; a journal of technical methods and pathology
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1083/jcb.200901145
发表时间:
2009-05-18
期刊:
The Journal of cell biology
影响因子:
--
作者:
Klemm RW;Ejsing CS;Surma MA;Kaiser HJ;Gerl MJ;Sampaio JL;de Robillard Q;Ferguson C;Proszynski TJ;Shevchenko A;Simons K
通讯作者:
Simons K
影响因子:
8
作者:
Hammond, DE;Urbé, S;Clague, MJ
通讯作者:
Clague, MJ
影响因子:
--
作者:
La Rosa, Piergiorgio;Pesiri, Valeria;Acconcia, Filippo
通讯作者:
Acconcia, Filippo