| RRC ID |
44956
|
| 著者 |
Yamaguchi H, Takanashi M, Yoshida N, Ito Y, Kamata R, Fukami K, Yanagihara K, Sakai R.
|
| タイトル |
Saracatinib impairs the peritoneal dissemination of diffuse-type gastric carcinoma cells resistant to Met and fibroblast growth factor receptor inhibitors.
|
| ジャーナル |
Cancer Sci
|
| Abstract |
Diffuse-type gastric carcinomas (DGC) exhibit more aggressive progression and poorer prognosis than intestinal-type and other gastric carcinomas. To identify potential therapeutic targets, we examined protein tyrosine phosphorylation in a panel of DGC and other gastric cancer cell lines. Protein tyrosine phosphorylation was significantly enhanced or altered in DGC cell lines compared with that in other gastric cancer cell lines. Affinity purification and mass spectrometry analysis of tyrosine-phosphorylated proteins identified Met as a protein that is preferentially expressed and phosphorylated in DGC cell lines. Unexpectedly, Met inhibitors blocked cell growth, Met downstream signaling and peritoneal dissemination in vivo in only a subset of cell lines that exhibited remarkable overexpression of Met. Likewise, only cell lines with overexpression of fibroblast growth factor receptor 2 (FGFR2) or phosphorylation of FRS2 were sensitive to an FGFR2 inhibitor. A Src inhibitor saracatinib impaired growth in cell lines that are insensitive to both Met and FGFR2 inhibitors. Saracatinib also effectively impaired peritoneal dissemination of Met-independent and FGFR2-independent SGC cells. Moreover, DGC cell lines exhibited nearly mutually exclusive susceptibility to Met, FGFR and Src inhibitors. These results suggest that DGC have distinct sensitivities to molecular target drugs and that targeting Src is beneficial in the treatment of DGC insensitive to Met and FGFR inhibition.
|
| 巻・号 |
105(5)
|
| ページ |
528-36
|
| 公開日 |
2014-5-1
|
| DOI |
10.1111/cas.12387
|
| PMID |
24612061
|
| PMC |
PMC4317844
|
| MeSH |
Antineoplastic Agents / pharmacology*
Benzodioxoles / pharmacology*
Cell Line, Tumor
Cell Proliferation / drug effects
Drug Resistance, Neoplasm*
Humans
Molecular Targeted Therapy
Peritoneum / cytology
Peritoneum / drug effects
Phosphorylation
Protein Kinase Inhibitors / pharmacology*
Proto-Oncogene Proteins c-met / antagonists & inhibitors*
Proto-Oncogene Proteins c-met / metabolism
Quinazolines / pharmacology*
Receptor, Fibroblast Growth Factor, Type 2 / antagonists & inhibitors*
Receptor, Fibroblast Growth Factor, Type 2 / metabolism
Signal Transduction / drug effects
Stomach Neoplasms / drug therapy*
src-Family Kinases / antagonists & inhibitors
|
| IF |
4.966
|
| 引用数 |
7
|
|
WOS 分野
|
ONCOLOGY
|
| リソース情報 |
| ヒト・動物細胞 |
GCIY(RCB0555)
ECC12(RCB1009)
KE-97(RCB1435) |
