Roles of immunoproteasome in immune cells
Project/Area Number |
20K16289
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 49070:Immunology-related
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Research Institution | Wakayama Medical University |
Principal Investigator |
Orimo Takashi 和歌山県立医科大学, 医学部, 特別研究員 (80843036)
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Project Period (FY) |
2020-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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Keywords | プロテアソーム / 免疫不全 / リンパ球 / 樹状細胞 / 好中球 / 単球 / T細胞 / 自己炎症性疾患 / 抗体産生細胞 / B細胞 / 炎症 / 遺伝子変異 / 自然免疫 |
Outline of Research at the Start |
プロテアソームは不要なタンパク質を分解し、細胞内環境の恒常性維持に関与するタンパク質複合体である。プロテアソームサブユニット遺伝子の変異により自己炎症性疾患が生じるが、現在まで適切なマウスモデルがなく、病態の解明や治療法の確立に至っていない。患者より同定された新規プロテアソームサブユニット変異を導入したマウスを作成し、そのヘテロ変異マウスが患者の所見と共通する多彩な表現型を示すことを見出した。本研究では、このマウスを解析することにより、プロテアソーム機能異常によって生じる病態の解明を目指す。
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Outline of Final Research Achievements |
Proteasome is a protein complex involved in cellular homeostasis by degrading unnecessary or useless proteins. I have generated and analyzed mutant mice carrying a novel missense variant of the PSMB9 proteasome subunit gene found in two unrelated patients with manifestations similar to, but distinct from proteasome-associated autoinflammatory syndromes. In the heterozygous mutant mice, B, T and dendritic cells were decreased, while neutrophils and monocytes were increased. This is a novel mouse model which is useful for clarifying the pathogenesis of proteasome dysfunctions and for developing effective therapeutic maneuvers for autoinflammation and immunodeficiency.
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Academic Significance and Societal Importance of the Research Achievements |
不要になった、あるいは合成がうまくできなかったタンパク質は速やかに処理されなければならない。このシステムに関わるタンパク質複合体プロテアソームの遺伝子変異(バリアント)により、難治性の炎症が発症するが、その病態はよくわかっていない。本研究では、難治性の炎症症状を示す患者で見つかったプロテアソームの新しい遺伝子バリアントをマウスに導入、解析することにより、患者の免疫異常を再現することに成功した。このマウスは、プロテアソーム機能異常、免疫不全の病態の解明、新規治療薬の開発に有用と考えられる。
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Report
(3 results)
Research Products
(24 results)
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[Journal Article] Augmentation of STING‐induced type I interferon production in COPA syndrome2021
Author(s)
Kato Takashi、Yamamoto Masaki、Honda Yoshitaka、Orimo Takashi、Sasaki Izumi、Murakami Kohei、Hemmi Hiroaki、Fukuda‐Ohta Yuri、Isono Kyoichi、Takayama Saki、Nakamura Hidenori、Otsuki Yoshiro、Miyamoto Toshiaki、Takita Junko、Yasumi Takahiro、Nishikomori Ryuta、Matsubayashi Tadashi、Izawa Kazushi、Kaisho Tsuneyasu
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Journal Title
Arthritis & Rheumatology
Volume: in press
Issue: 11
Pages: 2105-2115
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Heterozygous missense variant of the proteasome subunit β-type 9 causes neonatal-onset autoinflammation and immunodeficiency2021
Author(s)
Kanazawa N, Hemmi H, Kinjo N, Ohnishi H, Hamazaki J, M.H, K.A, M.T, H.S, K.N, K.S, H.Y, I.K, N.R, T.M, Y.Y, T.S, O.T, O.T, K.T, S.I, F.Y, W.N, I.Y, K.K, O.S, T.T, N.K, M.S, Y.K, Kaisho T
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Journal Title
Nature Communications
Volume: 12
Issue: 1
Pages: 0-0
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Anticancer effects of chemokine-directed antigen delivery to a cross-presenting dendritic cell subset with immune checkpoint blockade2020
Author(s)
Mizumoto Y, Hemmi H, Katsuda M, Miyazawa M, Kitahata Y, Miyamoto A, Nakamori M, Ojima T, Matsuda K, Nakamura M, Hayata K, Fukuda-Ohta Y, Sugiyama M, Ohta T, Orimo T, Okura S, Sasaki I, Tamada K, Yamaue H, Kaisho T.
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Journal Title
British Journal of Cancer
Volume: 122
Issue: 8
Pages: 1185-1193
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] An endoplasmic reticulum stress sensor IRE1α is involved in cholera toxin-induced interleukin-1β production from tissue resident macrophages2021
Author(s)
I. Sasaki, Y. Fukuda-Ohta, N. Wakaki-Nishiyama, C. Nakai, S. Morita, D. Okuzaki, M. Kaku, K. Sawase, T. Kato, T. Orimo, K. Furukawa, T. Kaisho
Organizer
第28回日本免疫毒性学会学術集会
Related Report
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[Presentation] Interstitial Lung Disease and abnormal STING activation in COPA V242G heterozygous variant mice2021
Author(s)
T. Kato, T. Orimo, Y. Fukuda-Ohta, N. Wakaki-Nishiyama, C. Nakai, I. Sasaki, K. Murakami, H. Hemmi, Y. Honda, K. Izawa, Y. Otsuki, T. Matsubayashi, R. Nishikomori, T. Kaisho
Organizer
IEIIS2021: 16th Meeting of the International Endotoxin and Innate Immunity Society
Related Report
Int'l Joint Research
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[Presentation] Critical roles of IRE1α in cholera toxin-induced interleukin-1β production from resident peritoneal macrophages2021
Author(s)
I. Sasaki, Y. Fukuda-Ohta, N. Wakaki-Nishiyama, C. Nakai, S. Morita, D. Okuzaki, M. Kaku, K. Sawase, A. Yamamoto, T. Kato, T. Orimo, K. Furukawa, T. Kaisho
Organizer
IEIIS2021: 16th Meeting of the International Endotoxin and Innate Immunity Society (26tth Japanese Endotoxin and innate Immunity Society)
Related Report
Int'l Joint Research
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