Spatio-temporal analysis of Kit signalling in GIST: oncogenic signals on intracellular compartments
Project/Area Number |
16K18427
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Tumor biology
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Research Institution | Tokyo University of Science |
Principal Investigator |
Yuuki Obata 東京理科大学, 研究推進機構生命医科学研究所, 講師 (20609408)
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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Keywords | 消化管間質細胞腫 / Kitチロシンキナーゼ / ゴルジ体 / PI3K-Akt経路 / STAT5 / Mek-Erk経路 / イマチニブ / GIST / c-Kit / PI3K / Akt / マスト細胞腫 / ゴルジ / 細胞内輸送 / PI3K-Akt / STATs |
Outline of Final Research Achievements |
GISTs are caused by activating mutations in the Kit tyrosine kinase. Most primary GIST patients respond to the Kit inhibitor imatinib, but this drug often becomes ineffective because of secondary mutations in the Kit kinase domain. The characteristic intracellular accumulation of imatinib-sensitive and -resistant Kit is well documented, but its relationship to oncogenic signaling remains unknown. Here, we show that in cancer tissue from primary GIST patients as well as in cell lines, mutant Kit(Kit(mut)) accumulates on the Golgi. In imatinib-resistant GIST with a secondary Kit mutation, Kit localizes on the Golgi. Furthermore, Kit(mut) on the Golgi signals and activates Akt and STAT5. Blocking the biosynthetic transport of Kit(mut) to the Golgi from the ER inhibits oncogenic signaling. These results suggest that the Golgi serves as a platform for oncogenic Kit signaling. Our study may offer a new strategy for treating imatinib-resistant GISTs.
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Report
(3 results)
Research Products
(18 results)
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[Journal Article] Oncogenic Kit signalling on the Golgi is suppressed by blocking secretory trafficking with M-COPA in gastrointestinal stromal tumours.2018
Author(s)
Obata Y, Horikawa K, Shiina I, Takahashi T, Murata T, Tasaki Y, Suzuki K, Yonekura K, Esumi H, Nishida T, Abe R
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Journal Title
Cancer Lett.
Volume: 415
Pages: 1-10
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] M-COPA suppresses endolysosomal Kit-Akt oncogenic signalling through inhibiting the secretory pathway in neoplastic mast cells2017
Author(s)
Hara, Y., Obata, Y., Horikawa, K., Tasaki, Y., Suzuki, K., Murata, T., Shiina, I. & Abe, R.
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Journal Title
PLoS ONE
Volume: -
Issue: 4
Pages: e0175514-e0175514
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Oncogenic signaling by Kit tyrosine kinase occurs selectively on the Golgi apparatus in gastrointestinal stromal tumors2017
Author(s)
Obata, Y., Horikawa, K., Takahashi, T., Akieda, Y., Tsujimoto, M., Fletcher, J.A., Esumi, H., Nishida, T. & Abe, R.
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Journal Title
Oncogene
Volume: -
Issue: 26
Pages: 3661-3672
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] The spleen is the site where mast cells are induced in the development of food allergy2017
Author(s)
Toyoshima, S., Wakamatsu, E., Ishida, Y., Obata, Y., Kurashima, Y., Kiyono, T. & Abe, R.
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Journal Title
International Immunology
Volume: 29
Issue: 1
Pages: 31-45
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] 消化管間質細胞腫, マスト細胞腫の無限増殖にはオルガネラでのPI3K-Aktシグナルが必要である ~変異型Kitチロシンキナーゼのゴルジ体, エンド/リソソームへの異常局在とがんシグナリング~2016
Author(s)
小幡裕希, 堀川啓太, 高橋 剛, 穐枝佑紀, 辻本正彦, 原 泰志, 江角浩安, 西田俊朗, 安部 良
Organizer
第39回 日本分子生物学会大会 シンポジウム
Place of Presentation
パシフィコ横浜, 横浜
Year and Date
2016-11-30
Related Report
Invited
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[Presentation] Oncogenic signals by Kit tyrosine kinase occur on the Golgi apparatus in gastrointestinal stromal tumor cells ~ Spatiotemporal analyses of imatinib-resistant and -sensitive Kit signaling ~2016
Author(s)
Obata, Y., Horikawa, K., Takahashi, T., Akieda, Y., Tsujimoto, M., Esumi, H., Nishida, T. & Abe, R.
Organizer
The 41st Naito Conference
Place of Presentation
ホテルシャトーガトレーゼサッポロ, 札幌
Year and Date
2016-07-05
Related Report
Int'l Joint Research
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