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Basic study on SH2 domain of Grb2 as a molecular probe for detection of RTK activation
https://repo.qst.go.jp/records/45996
https://repo.qst.go.jp/records/45996e058a924-4ef5-4742-92b2-b9aec5d04788
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2011-02-07 | |||||
タイトル | ||||||
タイトル | Basic study on SH2 domain of Grb2 as a molecular probe for detection of RTK activation | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Saito, Yuriko
× Saito, Yuriko× Furukawa, Takako× Arano, Yasushi× Fujibayashi, Yasuhisa× Saga, Tsuneo× 齋藤 有里子× 古川 高子× 荒野 泰× 藤林 康久× 佐賀 恒夫 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Epidermal growth factor receptor (EGFR) and other receptor tyrosine kinases (RTKs) are overexpressed and/or mutated in various cancers and their abnormal activation is implicated in carcinogenesis. We explored the possibility of generating an imaging probe for RTK activation using the SH2 domain of Grb2 for cancer characterization. For cell penetration, molecular analysis and radiolabeling, the SH2 domain was fused with TAT, flag and tyrosine residue, respectively (termed TSF). We analyzed TSF characteristics in cells such as cellular uptake, stability and localization. After uptake into EGFR-expressing cells, TSF was found to be binding to phosphorylated-EGFR, which increased by stimulation with EGF. TSF was co-localized with EGFR in EGFR-activated cells, while it was localized as dots in cytosol in EGFR-non-activated cells. Cellular retention time of TSF was significantly extended under EGFR activation with EGF stimuli and reduced under the treatment with a tyrosine kinase inhibitor, Tyrphostin AG1478. In conclusion, the SH2 domain of Grb2 has the potential to be used as a binding component of a probe to detect activated-RTK and to evaluate the effect of kinase inhibitors on RTK activation. |
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書誌情報 |
International Journal of Oncology 巻 37, 号 2, p. 281-287, 発行日 2010-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1019-6439 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.3892/ijo_00000676 |