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Comprehensive analysis of full-length transcripts reveal novel splicing abnormalities and oncogenic transcripts in liver cancer

Research Project

Project/Area Number 18H02680
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionThe University of Tokyo (2019-2021)
Kyoto University (2018)

Principal Investigator

Fujimoto Akihiro  東京大学, 大学院医学系研究科(医学部), 教授 (30525853)

Co-Investigator(Kenkyū-buntansha) 中川 英刀  国立研究開発法人理化学研究所, 生命医科学研究センター, チームリーダー (50361621)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords長鎖シークエンサー / 肝癌 / 転写産物の全長 / HBV / 長鎖シークエンス / トランスクリプトーム / 長鎖シークエンス技術 / B型肝炎ウイルス / 転写産物 / 発現解析
Outline of Final Research Achievements

In this study, we developed an analysis pipeline named SPLICE and analyzed cDNA sequences from 42 pairs of hepatocellular carcinoma (HCC) and matched non-cancerous liver with Oxford Nanopore sequencer. Our analysis detected 46,663 transcripts from the protein-coding genes in the HCCs and the matched non-cancerous livers, of which 5,366 (11.5 %) were novel. Comparison of expression levels identified 9,933 differentially expressed transcripts (DETs) in 4,744 genes. Interestingly, 746 genes with DETs, including LINE1-MET transcript, were not found by the gene-level analysis. We also found that fusion transcripts of transposable elements and hepatitis B virus (HBV) were overexpressed in HCCs. In vitro experiments on DETs showed that LINE1-MET and HBV-human transposable elements promoted cell growth. Furthermore, fusion gene detection showed novel recurrent fusion events, which have not been detected short-reads.

Academic Significance and Societal Importance of the Research Achievements

肝癌は、世界の癌死の第3位に挙げられる予後不良の癌であり、有効な治療法の確立が急務である。これらの疾患の発症機序解明や治療ターゲットの発見のために、多くのゲノム、転写産物の研究が行われてきた。しかし、それらの先行研究は、短鎖(リード長が短い)の次世代シークエンサー(NGS)を用いて行われており、リピートを介した構造異常の検出や、転写産物の全長の解析が不可能であった。本研究は、長鎖シークエンサーを用いた初の肝癌のトランスクリプトーム研究であり、発癌に寄与する遺伝子候補が多数同定された。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (22 results)

All 2020 2019 2018 Other

All Journal Article (13 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 10 results,  Open Access: 9 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results) Remarks (1 results)

  • [Journal Article] Classification of primary liver cancer with immunosuppression mechanisms and correlation with genomic alterations.2020

    • Author(s)
      Fujita M, Yamaguchi R, Hasegawa T, Shimada S, Arihiro K, Hayashi S, Maejima K, Nakano K, Fujimoto A, Ono A, Aikata H, Ueno M, Hayami S, Tanaka H, Miyano S, Yamaue H, Chayama K, Kakimi K, Tanaka S, Imoto S, Nakagawa H.
    • Journal Title

      EBioMedicine

      Volume: 53 Pages: 102659-102659

    • DOI

      10.1016/j.ebiom.2020.102659

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Comprehensive Analysis of Indels in Whole-genome Microsatellite Regions and Microsatellite Instability across 21 Cancer Types2020

    • Author(s)
      Fujimoto A*, Fujita M, Hasegawa T, Wong JH, Maejima K, Oku-Sasaki A, Nakano K, Shiraishi Y, Miyano S, Yamamoto G, Akagi K, Imoto S, and Nakagawa H
    • Journal Title

      Genome Research

      Volume: 30 Issue: 3 Pages: 334-34

    • DOI

      10.1101/gr.255026.119

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pan-cancer analysis of whole genomes2020

    • Author(s)
      The ICGC/TCGA Pan-Cancer Analysis of Whole Genomes Consortium
    • Journal Title

      Nature

      Volume: 578 Issue: 7793 Pages: 82-93

    • DOI

      10.1038/s41586-020-1969-6

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] eVIDENCE: a practical variant filtering for low-frequency variants detection in cell-free DNA2019

    • Author(s)
      Mizuno Kei、Akamatsu Shusuke、Sumiyoshi Takayuki、Wong Jing Hao、Fujita Masashi et al.
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 15017-15017

    • DOI

      10.1038/s41598-019-51459-4

    • NAID

      120006734882

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of intermediate-sized deletions and inference of their impact on gene expression in a human population.2019

    • Author(s)
      Wong JH, Shigemizu D, Yoshii Y, Akiyama S, Tanaka A, Nakagawa H, Narumiya S, Fujimoto A
    • Journal Title

      Genome Medicine

      Volume: 11 Issue: 1 Pages: 44-44

    • DOI

      10.1186/s13073-019-0656-4

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical utility of androgen receptor gene aberrations in circulating cell-free DNA as a biomarker for treatment of castration-resistant prostate cancer2019

    • Author(s)
      Sumiyoshi Takayuki、Mizuno Kei、Yamasaki Toshinari、Miyazaki Yu、Makino Yuki、Okasho Kosuke、Li Xin、Utsunomiya Noriaki、Goto Takayuki、Kobayashi Takashi、Terada Naoki、Inoue Takahiro、Kamba Tomomi、Fujimoto Akihiro、Ogawa Osamu、Akamatsu Shusuke
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 4030-4030

    • DOI

      10.1038/s41598-019-40719-y

    • NAID

      120006709427

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Whole Genome Sequencing of a Vietnamese Family from a Dioxin Contamination Hotspot Reveals Novel Variants in the Son with Undiagnosed Intellectual Disability2018

    • Author(s)
      Nguyen Dang、Nguyen Hai、Nguyen Thuy、Nguyen Thi、Nakano Kaoru、Maejima Kazuhiro、Sasaki-Oku Aya、Nguyen Van、Nguyen Duy、Le Bach、Wong Jing、Tsunoda Tatsuhiko、Nakagawa Hidewaki、Fujimoto Akihiro、Nong Van
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 15 Issue: 12 Pages: 2629-2629

    • DOI

      10.3390/ijerph15122629

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Whole genome sequencing and mutation rate analysis of trios with paternal dioxin exposure2018

    • Author(s)
      Ton ND, Nakagawa H, Ha NH, Duong NT, Nhung VP, Hien LTT, Hue HTT, Hoang NH, Wong JH, Nakano K, Maejima K, Sasaki-Oku A, Tsunoda T, Fujimoto A*, Van Hai N.
    • Journal Title

      Hum Mutat.

      Volume: 10 Issue: 10 Pages: 1384-1392

    • DOI

      10.1002/humu.23585

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] IMSindel: An accurate intermediate-size indel detection tool incorporating de novo assembly and gapped global-local alignment with split read analysis2018

    • Author(s)
      Shigemizu Daichi、Miya Fuyuki、Akiyama Shintaro、Okuda Shujiro、Boroevich Keith A、Fujimoto Akihiro、Nakagawa Hidewaki、Ozaki Kouichi、Niida Shumpei、Kanemura Yonehiro、Okamoto Nobuhiko、Saitoh Shinji、Kato Mitsuhiro、Yamasaki Mami、Matsunaga Tatsuo、Mutai Hideki、Kosaki Kenjiro、Tsunoda Tatsuhiko
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 5608-5608

    • DOI

      10.1038/s41598-018-23978-z

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Loss-of-function mutations in Zn-finger DNA-binding domain of <i>HNF4A</i> cause aberrant transcriptional regulation in liver cancer2018

    • Author(s)
      Taniguchi Hiroaki、Fujimoto Akihiro、Kono Hidetoshi、Furuta Mayuko、Fujita Masashi、Nakagawa Hidewaki
    • Journal Title

      Oncotarget

      Volume: 9 Issue: 40 Pages: 26144-26156

    • DOI

      10.18632/oncotarget.25456

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 進化遺伝学とがんゲノム解析2018

    • Author(s)
      藤本明洋
    • Journal Title

      実験医学

      Volume: 増刊号 Pages: 105-109

    • Related Report
      2018 Annual Research Report
  • [Journal Article] ゲノムシークエンスデータの情報解析2018

    • Author(s)
      藤本明洋
    • Journal Title

      生物物理

      Volume: 58 Pages: 001-003

    • NAID

      130007378613

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 肝癌の全ゲノムシークエンス解析2018

    • Author(s)
      藤本明洋
    • Journal Title

      医学のあゆみ

      Volume: 8月4日 Pages: 399-404

    • Related Report
      2018 Annual Research Report
  • [Presentation] Identification of structural variations and analysis of their functional roles2019

    • Author(s)
      藤本明洋
    • Organizer
      日本進化学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Identification of structural variations and analysis of their functional roles2019

    • Author(s)
      藤本明洋
    • Organizer
      日本癌学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Identification of structural variations and analysis of their functional roles2019

    • Author(s)
      Akihiro Fujimoto
    • Organizer
      InCoB
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Population Genetics2019

    • Author(s)
      Akihiro Fujimoto
    • Organizer
      InCoB
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ヒト肝癌のゲノム異常の包括的解析と今後の課題2019

    • Author(s)
      藤本 明洋
    • Organizer
      関西肝癌局所療法研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Comprehensive Analysis of Indels in Whole-genome Microsatellite Regions and Microsatellite Instability across 21 Cancer Types2018

    • Author(s)
      藤本 明洋
    • Organizer
      アメリカ人類遺伝学会
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヒトのゲノム配列の解析と今後の課題;ゲノム解析の基礎、がんゲノム.研究、リキッドバイオプシーの個別化医療への応用2018

    • Author(s)
      藤本 明洋
    • Organizer
      薬物動態談話会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Identification of structural variations and analysis of their functional roles2018

    • Author(s)
      藤本 明洋
    • Organizer
      日本分子生物学会
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 東京大学大学院医学系研究科国際保健学専攻人類遺伝学教室

    • URL

      http://www.humgenet.m.u-tokyo.ac.jp/publication.html

    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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