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Development of an algorithm for determining the location of homologous recombination sites from NGS data and analysis of the relationship with genetic information

Research Project

Project/Area Number 19H03206
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 43050:Genome biology-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Takehiko Itoh  東京工業大学, 生命理工学院, 教授 (90501106)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsゲノム情報解析 / 相同組換え / NGS / 相同組み換え / 相同組み替え
Outline of Research at the Start

有性生殖において遺伝情報の担い手であるDNAを交換する相同組換えは、数多くの研究のターゲットとなってきたが、ゲノム中のどこで相同組換えを起こしているのか、塩基レベルで網羅的に知ることは非常に困難である。
そこで本提案では、新規ゲノム決定アルゴリズムを基盤とし、poolした配偶子のゲノムと親個体のゲノムのシークエンスデータから、減数分裂時の相同組換え位置を塩基レベルで網羅的に、頻度と合わせて導出する情報解析アルゴリズムを構築することを目指す。

Outline of Final Research Achievements

The objective of this research is to comprehensively identify the location of homologous recombination sites in various eukaryote genomes. To achieve this goal, we developed a novel program that detects homologous recombination sites using Illumina pair-end, mate-pair reads and PacBio HiFi as input. Using this program, we analyzed genome sequencing data of pooled sperm from mouse F1 (B6 x CAST) and from starfish, extracted genome-wide candidate positions for recombination, and analyzed their frequency and distribution.

Academic Significance and Societal Importance of the Research Achievements

本研究を通じて開発されたプログラムの使用により、bulkで取られた精子などのシークエンスデータに基づいて比較的容易にゲノムワイドな組換え位置、頻度情報が得られることが期待される。ここ1-2年で同様な解析がSingle-Cellベースで行われている事例が報告されているが、そのような方法と比べて圧倒的に簡便かつ網羅性が高いデータが得られる。今後は、相同組換えに関与するタンパク質の局在情報などと合わせて解析にしていくことで、減数分裂時の組換えの理解が一層進むことが期待される。

Report

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

    (6 results)

All 2021 2020

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

  • [Journal Article] Elucidation of the speciation history of three sister species of crown-of-thorns starfish (Acanthaster spp.) based on genomic analysis2021

    • Author(s)
      Hideaki Yuasa, Rei Kajitani, Yuta Nakamura, Kazuki Takahashi, Miki Okuno, Fumiya Kobayashi, Takahiro Shinoda, Atsushi Toyoda, Yutaka Suzuki, Nalinee Thongtham, Zac Forsman, Omri Bronstein, Davide Seveso, Enrico Montalbetti, Coralie Taquet, Gal Eyal, Nina Yasuda, Takehiko Itoh
    • Journal Title

      DNA Research

      Volume: 28 Issue: 4

    • DOI

      10.1093/dnares/dsab012

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] MetaPlatanus: a metagenome assembler that combines long-range sequence links and species-specific features2021

    • Author(s)
      Rei Kajitani, Hideki Noguchi, Yasuhiro Gotoh, Yoshitoshi Ogura, Dai Yoshimura, Miki Okuno, Atsushi Toyoda, Tomomi Kuwahara, Tetsuya Hayashi, Takehiko Itoh
    • Journal Title

      Nucleic Acids Research

      Volume: 49 Issue: 22 Pages: e130-e130

    • DOI

      10.1093/nar/gkab831

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of Sex Chromosome Evolution in the Clade Palaeognathae from Phased Genome Assembly2021

    • Author(s)
      Okuno, M., Mizushima, S., Kuroiwa, A., and Itoh, T.
    • Journal Title

      Genome Biology and Evolution

      Volume: 13 Issue: 11

    • DOI

      10.1093/gbe/evab242

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Draft Genome Sequence of Naganishia liquefaciens Strain N6, Isolated from the Japan Trench2020

    • Author(s)
      Han Yong-Woon、Kajitani Rei、Morimoto Hiroya、Palihati Maierdan、Kurokawa Yumiko、Ryusui Rie、Argunhan Bilge、Tsubouchi Hideo、Abe Fumiyoshi、Kajiwara Susumu、Iwasaki Hiroshi、Itoh Takehiko
    • Journal Title

      Microbiology Resource Announcements

      Volume: 9 Issue: 47

    • DOI

      10.1128/mra.00827-20

    • NAID

      120007124437

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Whole-genome sequencing and comparative analysis of Emu provides insights into sex chromosome evolution of the palaeognathae clade2020

    • Author(s)
      7.Miki Okuno, Rei Kajitani, Hiroyuki Tanaka, Shuhei Mizushima, Asato Kuroiwa, Takehiko Itoh
    • Organizer
      Plant and Animal Genome XXVIII Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アゲハチョウ属5種の比較ゲノム解析2020

    • Author(s)
      山部貴央,小林史弥,梶谷嶺,伊藤武彦
    • Organizer
      日本動物学会関東支部第72回大会
    • Related Report
      2019 Annual Research Report

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

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