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2021 年度 実績報告書

中脳辺縁系グリア・神経相互作用による眠気のメカニズムの解明

研究課題

研究課題/領域番号 21H02802
配分区分補助金
研究機関筑波大学

研究代表者

ラザルス ミハエル  筑波大学, 国際統合睡眠医科学研究機構, 教授 (80469650)

研究期間 (年度) 2021-04-01 – 2026-03-31
キーワードsleep / glia
研究実績の概要

We previously developed the first positive allosteric modulator of adenosine A2A receptors (A2AR), named A2AR PAM-1, that evokes A2AR responses in the brain (e.g., sleep induction) without affecting cardiovascular function, unlike classic A2AR agonists. We are now collaborating with the Abe Lab (Hiroshima University, Graduate School of Advanced Science and Engineering) to develop a visible-light (420 nm) photoactivatable (‘caged’) A2AR PAM-1. Using the opto-version of the A2AR PAM, we, for the first time, optochemically induced sleep in freely behaving mice and demonstrated that extracellular adenosine produced by glia and neurons in nucleus accumbens promotes sleep [Roy K et al., in preparation].

現在までの達成度 (区分)
現在までの達成度 (区分)

2: おおむね順調に進展している

理由

In addition to developing a new tool for optochemical control of extracellular adenosine, we have installed equipment for single-cell gene expression profiling, including a 10X Genomics Controller for feature barcoding, an S2 Singulator 100 for single nuclei preparation, and a workstation for data analysis. We are now able to rapidly generate insights that are critical for understanding glia-neuron interactions during sleep at the molecular level.

今後の研究の推進方策

In the future, pharmacotherapy may offer the possibility to cure diseases and alleviate symptoms while preventing uncontrolled drug activity in time and space, i.e. the drug is only active at times and sites where it produces its therapeutic effect. Our approach should aid in the generation of visible-light photocactivatable compounds for virtually any druggable target.

  • 研究成果

    (5件)

すべて 2022 2021

すべて 雑誌論文 (3件) (うち国際共著 3件、 査読あり 3件、 オープンアクセス 2件) 学会発表 (1件) (うち国際学会 1件、 招待講演 1件) 図書 (1件)

  • [雑誌論文] Allosteric Modulation of Adenosine A2A Receptors as a New Therapeutic Avenue2022

    • 著者名/発表者名
      Korkutata Mustafa、Agrawal Lokesh、Lazarus Michael
    • 雑誌名

      International Journal of Molecular Sciences

      巻: 23 ページ: 2101~2101

    • DOI

      10.3390/ijms23042101

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Mesencephalic dopamine neurons are essential for modafinil‐induced arousal2021

    • 著者名/発表者名
      Yang Yan Fei、Dong Hui、Shen Yan、Li Lei、Lazarus Michael、Qu Wei‐Min、Huang Zhi‐Li
    • 雑誌名

      British Journal of Pharmacology

      巻: 178 ページ: 4808~4825

    • DOI

      10.1111/bph.15660

    • 査読あり / 国際共著
  • [雑誌論文] Cerebral capillary blood flow upsurge during REM sleep is mediated by A2a receptors2021

    • 著者名/発表者名
      Tsai Chia-Jung、Nagata Takeshi、Liu Chih-Yao、Suganuma Takaya、Kanda Takeshi、Miyazaki Takehiro、Liu Kai、Saitoh Tsuyoshi、Nagase Hiroshi、Lazarus Michael、Vogt Kaspar E.、Yanagisawa Masashi、Hayashi Yu
    • 雑誌名

      Cell Reports

      巻: 36 ページ: 109558~109558

    • DOI

      10.1016/j.celrep.2021.109558

    • 査読あり / オープンアクセス / 国際共著
  • [学会発表] The gating of sleep homeostasis by motivation. Why are we sleepy when bored?2021

    • 著者名/発表者名
      Lazarus Michael
    • 学会等名
      3rd Congress of the Asian Society of Sleep Medicine
    • 国際学会 / 招待講演
  • [図書] Principles and Practice of Sleep Medicine (Seventh Edition)2022

    • 著者名/発表者名
      Lazarus Michael, Oishi Yo, Landolt Hans Peter
    • 総ページ数
      452-459
    • 出版者
      Elsevier
    • ISBN
      9780323661898

URL: 

公開日: 2022-12-28  

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