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Improvement of gene coexpression network analysis with the construction of reference transcriptome data

Research Project

Project/Area Number 19K06624
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43060:System genome science-related
Research InstitutionTohoku University

Principal Investigator

Obayashi Takeshi  東北大学, 情報科学研究科, 准教授 (50397048)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords遺伝子共発現 / トランスクリプトーム / データベース / ネットワーク解析 / 進化 / 主成分分析 / シングルセル / 遺伝子ネットワーク / バイオインフォマティクス / 生命情報科学 / 比較ゲノム
Outline of Research at the Start

大量のトランスクリプトームデータに基づく遺伝子発現パターンの類似性(遺伝子共発現)情報は、遺伝子機能ネットワークを推定する方法として広く利用されている。しかし、共発現ネットワークは生物種ごとに独自の偏りを持ち、直接比較することができない。本申請では、各生物種のリファレンストランスクリプトームの構築を行い、これを用いた種固有の遺伝子共発現情報の導出と比較解析を行う。

Outline of Final Research Achievements

Gene coexpression analysis is a method for predicting gene function by identifying groups of genes with similar expression profiles. Although a large amount of publicly available gene expression data reflects diverse environments, sample bias in the data is a severe problem in coexpression analysis. We have developed a new methodology combining principal component analysis and ensemble calculation to retrieve highly accurate coexpression information.

Academic Significance and Societal Importance of the Research Achievements

本研究では、データを収集する際のサンプリングバイアスを事後処理によって軽減する手法を提案し、公共のトランスクリプトームデータに基づく遺伝子ネットワーク解析を大きく改善することに成功した。サンプリングバイアスは大規模データを扱う上での大きな問題であり、それを解決する本手法は広い分野に適用できる可能性がある。

Report

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

    (11 results)

All 2022 2021 2020 2019 Other

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Journal Article] ATTED-II v11: A Plant Gene Coexpression Database Using a Sample Balancing Technique by Subagging of Principal Components2022

    • Author(s)
      Obayashi Takeshi、Hibara Himiko、Kagaya Yuki、Aoki Yuichi、Kinoshita Kengo
    • Journal Title

      Plant and Cell Physiology

      Volume: - Issue: 6 Pages: 869-881

    • DOI

      10.1093/pcp/pcac041

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Gene-to-gene Spearman correlation using the sample principal component scores is a simple sample-balancing methodology for gene coexpression calculation.2022

    • Author(s)
      Takeshi Obayashi, Aoki Yuichi
    • Organizer
      第63回日本植物生理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ATTED-II v10.2: a Plant Coexpression Database Providing Logit Score of Ensemble Mutual Rank as Coexpression Index to Enhance Usability for Genome-Wide Analyses.2021

    • Author(s)
      Takeshi Obayashi and Yuichi Aoki
    • Organizer
      第62回日本植物生理学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Exploration of Gene Expression Latent Space in Higher Plants by using Generative Models.2021

    • Author(s)
      Yuichi Aoki, Takeshi Obayashi
    • Organizer
      第62回日本植物生理学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 全ゲノム遺伝子共発現情報の可視化手法の検討2020

    • Author(s)
      Takeshi Obayashi, Yuichi Aoki, and Kengo Kinoshita
    • Organizer
      第9回生命医薬情報学連合大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Comparison of summarization methods of co-expressed gene list to predict gene function2020

    • Author(s)
      Takeshi Obayashi, Yuichi Aoki, and Kengo Kinoshita
    • Organizer
      28th Conference on International Society for Computational Biology (ISMB2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of Coexpression-guided Generative Model for Plant Gene Expression Inference2020

    • Author(s)
      Yuichi Aoki, Shinichi Yamazaki, and Takeshi Obayashi
    • Organizer
      28th Conference on International Society for Computational Biology (ISMB2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ATTED-II v10: a Plant Coexpression Database Providing Logit Score of Ensemble Mutual Rank as Coexpression Index to Enhance Usability for Genome-Wide Analyses.2020

    • Author(s)
      Takeshi Obayashi, Yuichi Aoki
    • Organizer
      日本植物生理学会年会(大阪大会)
    • Related Report
      2019 Research-status Report
  • [Presentation] Integration and evaluation of scRNAseq-, bulk RNAseq and microarray-based gene coexpression data2019

    • Author(s)
      Takeshi Obayashi, Yuichi Aoki, Kengo Kinoshita
    • Organizer
      ISMB/ECCB 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] ATTED-II: Gene coexpression database for plants

    • URL

      https://atted.jp

    • Related Report
      2021 Annual Research Report
  • [Remarks] COXPRESdb: Gene coexpression database for animals

    • URL

      https://coxpresdb.jp

    • Related Report
      2021 Annual Research Report

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

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