Induction of autophagy via novel lysosomal localized Akt binding molecule
Project/Area Number |
16K20872
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Experimental pathology
Functional biochemistry
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Research Institution | Hokkaido University |
Principal Investigator |
Noriyuki HIRATA 北海道大学, 遺伝子病制御研究所, 助教 (40595956)
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Research Collaborator |
Noguchi Masayuki
Suizu Futoshi
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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Keywords | オートファジー / PI3K-Akt-mTORシグナル伝達経路 / リソソーム / シグナル伝達 / 神経科学 / ウィルス / 感染症 / 免疫学 / PI3K-Akt-mTORシグナル伝達経路 |
Outline of Final Research Achievements |
I identified VRK2 as the serine/threonine kinase binding lysosomal localized Akt. VRK2 is predicted control of induction of autophagy. In this study, I performed a research project aimed at the novel mechanism of autophagy induction via activity of Akt and VRK2 on lysosomal membrane. The index of autophagy induction (LC3 puncta, LC3II/I conversion and p62 reduction)in VRK2 shRNA-treated cells were reduced as compare to control cells. And also, I determined that the lysosomal enzymatic activity to protein degradation as the final step of autophagy is enhanced by VRK2.
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Academic Significance and Societal Importance of the Research Achievements |
本研究により、一般的にAktの下流のシグナルに存在するmTORC1が介するオートファジー誘導機構に、mTORC1を介さず、リソソーム膜上においてVRK2にAktが結合した複合体によりAkt活性を維持して誘導される機構が解明され、新たなオートファジー誘導の仕組みとして学術的な意義を持つと考える。また、この成果により、オートファジー異常の代表疾患、特に中枢神経系疾患であるアルツハイマー病、ハンチントン病、パーキンソン病に悩む患者に対する新たな治療法の開発につながることが期待される。
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Report
(4 results)
Research Products
(13 results)
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[Presentation] Functional characterization of lysosomal interaction of Akt with VRK22018
Author(s)
HIRATA Noriyuki, SUIZU Futoshi , MATSUDA-LENNICOV Mami, TANAKA Tsutomu, EDAMURA Tatsuma, ISHIGAKI Satoko, DONIA Thoria, LITHANATUDOM Pathrapol, OBUSE Chikashi, IWANAGA Toshihiko, NOGUCHI Masayuki
Organizer
第41回日本分子生物学会年会
Related Report
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[Presentation] Functional characterization of lysosomal interaction of Akt with VRK22018
Author(s)
HIRATA Noriyuki, SUIZU Futoshi , MATSUDA-LENNICOV Mami, TANAKA Tsutomu, EDAMURA Tatsuma, ISHIGAKI Satoko, DONIA Thoria, LITHANATUDOM Pathrapol, OBUSE Chikashi, IWANAGA Toshihiko, NOGUCHI Masayuki
Organizer
The 37th Sapporo International Cancer Symposium
Related Report
Int'l Joint Research
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[Presentation] Interaction of Akt with VRK2 at lysosomes controls induction of autophagy2018
Author(s)
Hirata N, Suizu F, Matsuda-Lennikov M, Tanaka T, Edamura T, Ishigaki S, Donia T, Lithanatudom P, Obuse C, Iwanaga T, Noguchi M
Organizer
第3回北大・部局横断シンポジウム 研究ネットワーク促進プログラム ~Young Researchers in Cutting-Edge Life Science~
Related Report
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[Presentation] Phosphorylation- dependent interaction of Akt and Inversin at basal body of primary cilia2016
Author(s)
Suizu F, Hirata N, Kimura K, Edamura T, Tanaka T, Ishigaki S, Donia T, Noguchi H, Iwanaga T, Noguchi M
Organizer
The 28th CDB Meeting, Cilia and Centrosomes: Current Advances and Future Directions
Place of Presentation
RIKEN Center for Develpmental Biology (CDB), Kobe, Japan)
Year and Date
2016-11-27
Related Report
Int'l Joint Research
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