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Developing a method for evaluating variants of uncertain significance in humans based on protein structures

Research Project

Project/Area Number 18K18154
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 62010:Life, health and medical informatics-related
Research InstitutionNagahama Institute of Bio-Science and Technology

Principal Investigator

Hijikata Atsushi  長浜バイオ大学, バイオサイエンス学部, プロジェクト特任講師 (80415273)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsゲノムバリアント / タンパク質立体構造 / ミスセンス変異 / アミノ酸残基 / 局所構造 / タンパク質局所構造 / 疾患関連ゲノム変異 / 分子機能 / 疾患関連変異 / 構造環境 / 遺伝子疾患 / 構造バイオインフォマティクス / 遺伝子性疾患 / レアバリアント
Outline of Final Research Achievements

In this research project, I tried to develop a method to evaluate the functional impacts of missense variants without certain clinical significance. For this purpose, I analyzed a spatial arrangement of residues surrounding a reference amino acid residue on a protein structure and found that different tendencies in those environments between the residues with known pathogenic and neutral variants. I also found a trend that the structural environments between amino acid replacement observed in neutral variants showed a certain similarity compared to those in pathogenic variants. These results suggest that the structural environment might be useful to evaluate the functional impacts of variants with uncertain significance.

Academic Significance and Societal Importance of the Research Achievements

がんの治療法選択や希少疾患の遺伝子診断においてクリニカルシークエンスが進展しているが、個人のゲノム上にはその意義が不明なバリアントが多数存在しており、ゲノムバリアントと疾患などの表現型との関連性をどのように評価するかが課題となっている。本研究によって開発した手法をさらに発展させることで、これらのバリアントの分子機能への影響をより正確に評価することができると考えられ、正しく理解することにつながると考えられる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2021 2019 2018

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 4 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Detailed analysis of Japanese patients with adenosine deaminase 2 deficiency reveals characteristic elevation of type II interferon signature and STAT1 hyperactivation.2021

    • Author(s)
      Nihira H, Izawa K, Ito M, Umebayashi H, Okano T, Kajikawa S, ...Yasumi T.
    • Journal Title

      J Allergy Clin Immunol

      Volume: 印刷中 Issue: 2 Pages: 00157-3

    • DOI

      10.1016/j.jaci.2021.01.018

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] WDR11 is another causative gene for coloboma, cardiac anomaly and growth retardation in 10q26 deletion syndrome2019

    • Author(s)
      Sutani Akito、Shima Hirohito、Hijikata Atsushi、Hosokawa Susumu、Katoh-Fukui Yuko、Takasawa Kei、Suzuki Erina、Doi Shozaburo、Shirai Tsuyoshi、Morio Tomohiro、Fukami Maki、Kashimada Kenichi
    • Journal Title

      European Journal of Medical Genetics

      Volume: 印刷中 Issue: 1 Pages: 103626-103626

    • DOI

      10.1016/j.ejmg.2019.01.016

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Developing a new method to predict the effect of the missense mutations on the protein function and phenotypes2018

    • Author(s)
      Hijikata Atsushi
    • Journal Title

      Impact

      Volume: 2018 Issue: 12 Pages: 35-37

    • DOI

      10.21820/23987073.2018.12.35

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] Clinical characteristics of adolescent cases with Type A insulin resistance syndrome caused by heterozygous mutations in the β-subunit of the insulin receptor (INSR) gene2018

    • Author(s)
      Takasawa Kei、Tsuji-Hosokawa Atsumi、Takishima Shigeru、Wada Yasunori、Nagasaki Keisuke、Dateki Sumito、Numakura Chikahiko、Hijikata Atsushi、Shirai Tsuyoshi、Kashimada Kenichi、Morio Tomohiro
    • Journal Title

      Journal of Diabetes

      Volume: 11 Issue: 1 Pages: 46-54

    • DOI

      10.1111/1753-0407.12797

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] タンパク質高次構造情報に基づくヒトミスセンス変異の分子機能への影響を予測する手法の開発2019

    • Author(s)
      土方 敦司、塩生 真史、白井 剛
    • Organizer
      第19回日本蛋白質科学会年会 第71回日本細胞生物学会大会 合同年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] A local structural environment descriptor towards evaluating impact of rare variants in humans on protein structures and functions2019

    • Author(s)
      Atsushi Hijikata, Masafumi Shionyu, Tsuyoshi Shirai
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] タンパク質高次構造に基づくヒトミスセンスバリアントの分子機能への影響を予測する手法の開発2019

    • Author(s)
      土方 敦司、塩生 真史、白井 剛
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] たんぱく質の高次構造から読み解くゲノム変異と疾患表現型との関係2019

    • Author(s)
      土方敦司
    • Organizer
      第17回ゲノム・オミックス連携推進セミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Development of a method for predicting pathogenicity of missense variants incorporating supramolecular structural information2018

    • Author(s)
      土方敦司、塩生真史、白井剛
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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