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Development of locus-specific single cell analysis of chromatin modifications in tissue

Research Project

Project/Area Number 19K07372
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionYokohama City University

Principal Investigator

NISHIYAMA Akira  横浜市立大学, 医学部, 准教授 (80589664)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsエピゲノム / ヒストン修飾 / トランスクリプトーム / ゲノム機能領域 / 単一細胞解析 / クロマチン / 組織
Outline of Research at the Start

均質に見える細胞集団においても遺伝子発現の不均質性が存在する。遺伝子発現の不均質性の主因はエピゲノムの不均質性であることは疑いもなく、またこの不均質性を引き起こす要因の一つとして組織環境が挙げられる。しかし転写因子のDNA結合やヒストン修飾などを単一細胞かつ遺伝子座レベルで解析することは容易ではなく、また組織内のエピゲノムの不均質性を解析する技術も開発されていない。本研究では「組織内で同種の細胞間にエピゲノムの不均質性があるか、その不均質性がどのように遺伝子発現の不均質性に影響を及ぼすか」の問いに答えるために、組織における単一細胞かつ遺伝子座レベルでのクロマチン可視化法の技術基盤の確立を行う。

Outline of Final Research Achievements

In this study, we established methods for analyzing gene expression, histone modifications, and chromatin structure at high resolution from very small number of cells. These methods are essential for analyzing transcriptional regulatory regions in the mouse tissues. For gene expression analysis, we performed RNA-seq for full length mRNA and total RNA. For histone modification analysis, we introduced methods for a smaller number of cells than our ChIP-seq method optimized for small amount of cells. In addition, we have combined the Hi-C method with capture probes to enable high-resolution chromatin structure analysis. Although we did not achieve the initial goal of establishing a method for single-cell epigenome analysis, these methods enable the high-precision analysis of transcriptional regulatory regions in mouse tissue.

Academic Significance and Societal Importance of the Research Achievements

個体発生や臓器の形成はもちろんのこと、様々な疾患における病態理解においては、遺伝子発現がどのように調節されているか、またどのような異常が生じているかを研究することが非常に重要です。しかし、生体由来の微量サンプルでは遺伝子発現、ヒストン修飾などのエピゲエノム情報、高解像度のクロマチン高次構造の解析は困難でした。本研究では、生体由来の微量サンプルを用いて、高精細にこれらの解析を行う技術を確立しました。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2019 Other

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] Genetic and chemical inhibition of IRF5 suppresses pre-existing mouse lupus-like disease2021

    • Author(s)
      Ban T, Kikuchi M, Sato GR, Manabe A, Tagata N, Harita K, Nishiyama A, Nishimura K, Yoshimi R, Kirino Y, Yanai H, Matsumoto Y, Suzuki S, Hihara H, Ito M, Tsukahara K, Yoshimatsu K, Yamamoto T, Taniguchi T, Nakajima H, Ito S, Tamura T
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 4379-4379

    • DOI

      10.1038/s41467-021-24609-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 転写因子IRF8による樹状細胞の分化制御2021

    • Author(s)
      西山晃, 田村智彦
    • Journal Title

      臨床免疫・アレルギー科

      Volume: 76 Pages: 549-554

    • NAID

      40022738606

    • Related Report
      2021 Annual Research Report
  • [Journal Article] A RUNX?CBFβ-driven enhancer directs the Irf8 dose-dependent lineage choice between DCs and monocytes2021

    • Author(s)
      Murakami Koichi、Sasaki Haruka、Nishiyama Akira、Kurotaki Daisuke、Kawase Wataru、Ban Tatsuma、Nakabayashi Jun、Kanzaki Satoko、Sekita Yoichi、Nakajima Hideaki、Ozato Keiko、Kimura Tohru、Tamura Tomohiko
    • Journal Title

      Nature Immunology

      Volume: 22 Issue: 3 Pages: 301-311

    • DOI

      10.1038/s41590-021-00871-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Astrocytic phagocytosis is a compensatory mechanism for microglial dysfunction2020

    • Author(s)
      Konishi Hiroyuki、Okamoto Takayuki、Hara Yuichiro、Komine Okiru、Tamada Hiromi、Maeda Mitsuyo、Osako Fumika、Kobayashi Masaaki、Nishiyama Akira、Kataoka Yosky、Takai Toshiyuki、Udagawa Nobuyuki、Jung Steffen、Ozato Keiko、Tamura Tomohiko、Tsuda Makoto、Yamanaka Koji、Ogi Tomoo、Sato Katsuaki、Kiyama Hiroshi
    • Journal Title

      The EMBO Journal

      Volume: 39 Issue: 22

    • DOI

      10.15252/embj.2020104464

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Transcriptional regulation of mononuclear phagocyte development by the transcription factor IRF82022

    • Author(s)
      Akira Nishiyama
    • Organizer
      2022 JSPS-NIH Forum
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] RUNX-CBFβによって駆動されるIrf8 エンハンサーが単球か樹状細胞かの系譜選択を決定する2021

    • Author(s)
      西山 晃, 村上 紘一, 佐々木 悠, 関田 洋一, 木村 透, 田村 智彦
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Introduction to the integrated analysis of epigenome and transcriptome with low cell numbers.2019

    • Author(s)
      西山 晃
    • Organizer
      第48回日本免疫学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] https://www-user.yokohama-cu.ac.jp/~immunol/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 免疫学教室 | 横浜市立大学

    • URL

      https://www-user.yokohama-cu.ac.jp/~immunol/

    • Related Report
      2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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