Biological significance and molecular basis of lectin receptor-mediated self-recognition
Project/Area Number |
20H00505
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Medium-sized Section 49:Pathology, infection/immunology, and related fields
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Research Institution | Osaka University |
Principal Investigator |
Yamasaki Sho 大阪大学, 微生物病研究所, 教授 (40312946)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2022: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2021: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2020: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
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Keywords | レクチン受容体 / Mincle / ミクログリア / C型レクチン受容体 / β-GlcCer / ゴーシェ病 / 内因性リガンド |
Outline of Research at the Start |
本研究はC型レクチン受容体(CLR)が担う自己認識に焦点を絞り、新たに見出された相互作用を中心に、その生物学的意義と分子基盤を明らかにすることを目的とする。生体は、常に自己・非自己双方に起因する様々な「危機」に曝されている。CLRはパターン認識受容体ファミリーに分類されるが、病原体のみならず自己由来のリガンドを認識して免疫応答を発動する特徴的な機能を持つことを見出されてきた。生体の異変に対処する有益な恒常性維持機構であると推測されるが、自己認識に伴う生体応答の生理的・病理的役割は明確でなく、未だ内因性リガンドが同定されていないCLR ファミリー分子も多い。そこで本研究ではその詳細を明らかする。
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Outline of Final Research Achievements |
Gaucher disease (GD) is the most common lysosomal storage disease caused by recessive mutations in the degrading enzyme of β-GlcCer. However, it remains unclear how β-GlcCer causes severe neuronopathic symptoms, which are not fully treated by current therapies. We herein found that β-GlcCer accumulating in GD activated microglia through Mincle to induce phagocytosis of living neurons, which exacerbated Gaucher symptoms. This process was augmented by TNF secreted from activated microglia that sensitized neurons for phagocytosis. This characteristic pathology was also observed in human neuronopathic GD. Blockade of these pathways in mice with a combination of FDA-approved drugs, minocycline and etanercept, effectively protected neurons and ameliorated neuronopathic symptoms. In this study, we propose that limiting unrestrained microglia activation using drug repurposing provides a quickly applicable therapeutic option for fatal neuronopathic GD.
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Academic Significance and Societal Importance of the Research Achievements |
ゴーシェ病はグルコシルセラミドと呼ばれる糖脂質が蓄積することで発症する遺伝性難病である。致死性の神経症状を合併するが、詳細な分子メカニズムは不明で有効な治療法が存在しない。本研究では、グルコシルセラミドによって脳の免疫細胞であるミクログリアが直接活性化され、神経細胞を食べてしまうことで神経細胞が減少し、致死性の障害に繋がることを明らかにした。本研究成果により、ゴーシェ病の新たな治療法が見出され、これまで治療法がなかった致死性の神経型ゴーシェ病を先天的に患う小児患者やその家族に希望を与えるものと期待される。
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Report
(5 results)
Research Products
(108 results)
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[Journal Article] Direct activation of microglia by β-glucosylceramide causes phagoptosis of neurons that exacerbates Gaucher disease.2023
Author(s)
Shimizu T, Schutt C R, Izumi Y, Tomiyasu N, Omahdi Z, Kano K, Takamatsu H, Aoki J, Bamba T, Kumanogoh A, Takao M, Yamasaki S*.
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Journal Title
Immunity
Volume: 56
Issue: 2
Pages: 1-13
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Memory B Cells and Memory T Cells Induced by SARS-CoV-2 Booster Vaccination or Infection Show Different Dynamics and Responsiveness to the Omicron Variant2022
Author(s)
Mise-Omata, S., M. Ikeda, M. Takeshita, Y. Uwamino, M. Wakui, T. Arai, A. Yoshifuji, K. Murano, H. Siomi, K. Nakagawara, M. Ohyagi, M. Ando, N. Hasegawa, H. Saya, M. Murata, K. Fukunaga, H. Namkoong, X. Lu, S. Yamasaki, and A. Yoshimura.
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Journal Title
J Immunol
Volume: 209
Issue: 11
Pages: 2104-2113
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Identification of conserved SARS-CoV-2 spike epitopes that expand public cTfh clonotypes in mild COVID-19 patients2021
Author(s)
Lu X, Hosono Y, Nagae M, Ishizuka S, Ishikawa E, Motooka D, Ozaki Y, Sax N, Maeda Y, Kato Y, Morita T, Shinnakasu R, Inoue T, Onodera T, Matsumura T, Shinkai M, Sato T, Nakamura S, Mori S, Kanda T, Nakayama EE, Shioda T, Kurosaki T, Takeda K, Kumanogoh A, Arase H, Nakagami H, Yamashita K, Takahashi Y, Yamasaki S.
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Journal Title
J Exp Med.
Volume: 218
Issue: 12
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Trehalose diamide glycolipids augment antigen-specific antibody responses in a Mincle-dependent manner.2021
Author(s)
Lynch, AT., Motozono, C., Foster, AJ., Kodar, K., Dangerfield, EM., Yamasaki, S., Wedlock, DN., Timmer, MSM., Stocker, BL.
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Journal Title
Bioorg Chem.
Volume: 110
Pages: 104747-104747
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Protein Kinase D2 drives chylomicron-mediated lipid transport in the intestine and promotes obesity2021
Author(s)
Jonathan Trujillo-Viera, Rabih El-Merahbi, Vanessa Schmidt, Till Karwen, Angel Loza-Valdes, Akim Strohmeyer, Saskia Reuter, Minhee Noh, Magdalena Wit, Izabela Hawro, Sabine Mocek, Christina Fey, Alexander E Mayer, Mona C Loffler, Ilka Wilhelmi, Marco Metzger, Eri Ishikawa, Sho Yamasaki, Monika Rau, Andreas Geier et al.
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Journal Title
EMBO Molecular Medicine
Volume: 13
Issue: 5
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] TREM2 is a receptor for non-glycosylated mycolic acids of mycobacteria that limits anti-mycobacterial macrophage activation.2021
Author(s)
Iizasa, E., Chuma, Y., Uematsu, T., Kubota, M., Kawaguchi, H., Umemura, M., Toyonaga, K., Kiyohara, H., Yano, I., Colonna, M., Sugita, M., Matsuzaki, G., Yamasaki, S., Yoshida, H., Hara, H.
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Journal Title
Nature Communications
Volume: 12
Issue: 1
Pages: 2299-2314
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Helicobacter metabolites exacerbate gastritis through C-type lectin receptors.2021
Author(s)
Nagata M, Toyonaga K, Ishikawa E, Haji S, Okahashi N, Takahashi M, Izumi Y, Imamura A, Takato K, Ishida H, Nagai S, Illarionov P, Stocker B L, Timmer M S M, Smith D G M, Williams S J, Bamba T, Miyamoto T, Arita M, Appelmelk B J, Yamasaki S*.
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Journal Title
J. Exp. Med.
Volume: 218(1)
Issue: 1
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Discovery of Self‐Assembling Small Molecules as Vaccine Adjuvants2020
Author(s)
Jin Shuyu、Vu Hue Thi、Hioki Kou、Noda Naotaka、Yoshida Hiroki、Shimane Toru、Ishizuka Shigenari、Takashima Ippei、Mizuhata Yoshiyuki、Beverly Pe Kathleen、Ogawa Tetsuya、Nishimura Naoya、Packwood Daniel、Tokitoh Norihiro、Kurata Hiroki、Yamasaki Sho、Ishii Ken J.、Uesugi Motonari
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Journal Title
Angewandte Chemie International Edition
Volume: 60
Issue: 2
Pages: 961-969
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] C-type lectin Mincle mediates cell death-triggered inflammation in acute kidney injury.2020
Author(s)
Tanaka M, Saka-Tanaka M, Ochi K, Fujieda K, Sugiura Y, Miyamoto T, Kohda H, Ito A, Miyazawa T, Matsumoto A, Aoe S, Miyamoto Y, Tsuboi N, Maruyama S, Suematsu M, Yamasaki S, Ogawa Y, Suganami T.
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Journal Title
J Exp Med.
Volume: 217
Issue: 11
DOI
Related Report
Peer Reviewed / Open Access
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