Elucidation of pathological molecular mechanism of Notch2-Hajdu Cheney Syndrome type mutation
Project/Area Number |
26462829
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Functional basic dentistry
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Research Institution | Tohoku University (2015-2016) Fukuoka Dental College (2014) |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
自見 英治郎 九州歯科大学, 歯学部, 教授 (40276598)
岡本 富士雄 福岡歯科大学, 口腔歯学部, 講師 (60153938)
鍛治屋 浩 福岡歯科大学, 口腔歯学部, 講師 (80177378)
岡部 幸司 福岡歯科大学, 口腔歯学部, 教授 (80224046)
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Co-Investigator(Renkei-kenkyūsha) |
Inuzuka Hiroyuki 東北大学歯学研究科, 歯学部, 准教授 (20335863)
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Research Collaborator |
Wei Wenyi ハーバード大学, 医学部, 教授
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | Hajdu-Cheney症候群 / ユビキチン / プロテアソーム / FBW7 / Notch2 / 破骨細胞 / Osteolysis / 骨融解症 / ユビキチン・プロテアソーム / 骨代謝 / 先天性疾患 / ユビキチンー / 骨吸収 / 分子生物学 |
Outline of Final Research Achievements |
Hajdu-Cheney syndrome (HCS) is a rare autosomal disorder caused by heterozygous mutations in NOTCH2, clinically characterized by acroosteolysis, severe osteoporosis, short stature and polycystic kidneys. Recent studies have identified that aberrant NOTCH2 signaling and consequent osteoclast hyperactivity are closely associated with pathogenesis of the bone-related disorder, but exact molecular mechanisms remain largely elusive. We found that the sustained osteoclast activity is largely due to elevated protein abundance of C-terminus truncating mutant of NOTCH2 that escapes FBW7-mediated ubiquination and proteolysis events. Mice with osteoclast-specific Fbw7 ablation revealed osteoporotic phenotypes reminiscent of HCS owing to elevated Notch2 signaling. Importantly, administrations of Notch inhibitors in the Fbw7 conditional knockout mice alleviated progressive bone resorption. Our findings highlight the molecular basis for the pathogenesis of HCS.
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Report
(4 results)
Research Products
(22 results)
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[Journal Article] The SCFβ-TRCP E3 ubiquitin ligase complex targets Lipin1 for ubiquitination and degradation to promote hepatic lipogenesis.2017
Author(s)
Shimizu K, Fukushima H, Ogura K, Lien EC, Nihira NT, Zhang J, North BJ, Guo A, Nagashima K, Nakagawa T, Hoshikawa S, Watahiki A, Okabe K, Yamada A, Toker A, Asara JM, Fukumoto S, Nakayama KI, Nakayama K, Inuzuka H, Wei W.
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Journal Title
Sci Signal. doi: 10.1126/scisignal.aah4117.
Volume: 10
Issue: 460
Pages: 1-15
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Nutrient-induced FNIP degradation by SCFβ-TRCP regulates FLCN couplex localization and promotes renal cancer progression2016
Author(s)
Nagashima, K., Fukushima, H., Shimizu, K., Hidaka, M., Hasumi, H., Ikebe, T., Fukumoto, S., Okabe, K., Inuzuka, H.
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Journal Title
Oncotarget
Volume: 8
Issue: 6
Pages: 9947-9960
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] The novel IκB kinase β inhibitor IMD-0560 prevents bone invasion by oral squamous cell carcinoma.2014
Author(s)
Tada Y, Kokabu S, Sugiyama G, Nakatomi C, Aoki K, Fukushima H, Osawa K, Sugamori Y, Ohya K, Okamoto M, Fujikawa T, Itai A, Matsuo K, Watanabe S, Jimi E.
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Journal Title
Oncotarget
Volume: 5
Pages: 12317-12330
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] The p65 subunit of NF-κB suppresses BMP2-induced bone formation by inhibiting Smad DNA binding via an interaction with Smad42014
Author(s)
Hirata-Tsuchiya S, Fukushima H, Katagiri T, Ohte S, Shin M, Nagano K, Aoki K, Morotomi T, Sugiyama G, Doi T, Takeuchi H, Ohya K, Terashita M, Hirata M, Kitamura C, Jimi E.
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Journal Title
Mol Endocrinol
Volume: 28
Issue: 9
Pages: 1460-1470
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] RelB-induced Expression of Cot, an MAP3K Family Member, Rescues RANKL-induced Osteoclastogenesis in Alymphoplasia Mice by Promoting NF-κB2 Processing by IKKα.2014
Author(s)
Taniguchi R, Fukushima H, Osawa K, Maruyama T, Yasuda H, Weih F, Doi T, Maki K, Jimi E.
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Journal Title
J Biol Chem.
Volume: 289
Issue: 11
Pages: 7349-7361
DOI
Related Report
Peer Reviewed
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[Presentation] 歯の石灰化におけるTRPM7の役割2015
Author(s)
緒方 佳代子, 岡 暁子, 福島 秀文, 岡本 富士雄, 永嶌 勝之, 尾崎 正雄, 岡部 幸司
Organizer
第57回歯科基礎医学会学術大会
Place of Presentation
新潟市
Year and Date
2015-09-11
Related Report
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[Presentation] NF-κB p65はSmad4と結合することでBMP2誘導性の骨形成を抑制する2015
Author(s)
平田 志津[土屋], 福島 秀文, 片桐 岳信, 大手 聡, 進 正史, 永野 健一, 青木 和広, 諸冨 孝彦, 杉山 悟郎, 中富 千尋, 古株 彰一郎, 土井 貴裕, 竹内 弘, 大谷 啓一, 寺下 正道, 平田 雅人, 北村 知昭, 自見 英治郎
Organizer
第57回歯科基礎医学会学術大会
Place of Presentation
新潟市
Year and Date
2015-09-11
Related Report
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[Presentation] TRPM7は歯の石灰化に関与する2015
Author(s)
緒方 佳代子, 福島 秀文, 岡本 富士雄, 岡 暁子, 永嶌 勝之, 尾崎 正雄, 岡部 幸司, 圓谷 智之, 片桐 千秋, 松下 正之
Organizer
第33回日本骨代謝学会学術集会
Place of Presentation
東京
Year and Date
2015-07-23
Related Report
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