| RRC ID |
38303
|
| 著者 |
Yoshino K, Motoyama S, Koyota S, Shibuya K, Usami S, Maruyama K, Saito H, Minamiya Y, Sugiyama T, Ogawa J.
|
| タイトル |
IGFBP3 and BAG1 enhance radiation-induced apoptosis in squamous esophageal cancer cells.
|
| ジャーナル |
Biochem Biophys Res Commun
|
| Abstract |
Identification of reliable markers of radiosensitivity and the key molecules that enhance the susceptibility of esophageal cancer cells to anticancer treatments would be highly desirable. To identify molecules that confer radiosensitivity to esophageal squamous carcinoma cells, we assessed the radiosensitivities of the TE-5, TE-9 and TE-12 cloneA1 cell lines. TE-12 cloneA1 cells showed significantly greater susceptibility to radiotherapy at 5 and 10Gy than either TE-5 or TE-9 cells. Consistent with that finding, 24h after irradiation (5Gy), TE-12 cloneA1 cells showed higher levels of caspase 3/7 activity than TE-5 or TE-9 cells. When we used DNA microarrays to compare the gene expression profiles of TE-5 and TE-12 cloneA1 cells, we found that the mRNA and protein expression of insulin-like growth factor binding protein 3 (IGFBP3) and Bcl-2-associated athanogene 1 (BAG1) was five or more times higher in TE-12 cloneA1 cells than TE-5 cells. Conversely, knocking down expression of IGFBP3 and BAG1 mRNA in TE-12 cloneA1 cells using small interfering RNA (siRNA) significantly reduced radiosensitivity. These data suggest that IGFBP3 and BAG1 may be key markers of radiosensitivity that enhance the susceptibility of squamous cell esophageal cancer to radiotherapy. IGFBP3 and BAG1 may thus be useful targets for improved and more individualized treatments for patients with esophageal squamous cell carcinoma.
|
| 巻・号 |
404(4)
|
| ページ |
1070-5
|
| 公開日 |
2011-1-28
|
| DOI |
10.1016/j.bbrc.2010.12.115
|
| PII |
S0006-291X(10)02353-3
|
| PMID |
21195059
|
| MeSH |
Apoptosis / genetics
Carcinoma, Squamous Cell / radiotherapy*
Cell Line, Tumor
DNA-Binding Proteins / genetics
DNA-Binding Proteins / physiology*
Esophageal Neoplasms / radiotherapy*
Gene Knockdown Techniques
Humans
Insulin-Like Growth Factor Binding Protein 3 / physiology*
Oligonucleotide Array Sequence Analysis
Radiation Tolerance / genetics*
Transcription Factors / genetics
Transcription Factors / physiology*
|
| IF |
2.985
|
| 引用数 |
22
|
|
WOS 分野
|
BIOPHYSICS
BIOCHEMISTRY & MOLECULAR BIOLOGY
|
| リソース情報 |
| ヒト・動物細胞 |
TE-9(RCB1988) |
