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Evolutionary Molecular Engineering Guided by Machine Learning: Smart Maturation Process for Cancer Therapeutic Antibodies

Research Project

Project/Area Number 20H00315
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 27:Chemical engineering and related fields
Research InstitutionTohoku University

Principal Investigator

Umetsu Mitsuo  東北大学, 工学研究科, 教授 (70333846)

Co-Investigator(Kenkyū-buntansha) 亀田 倫史  国立研究開発法人産業技術総合研究所, 情報・人間工学領域, 上級主任研究員 (40415774)
齋藤 裕  国立研究開発法人産業技術総合研究所, 情報・人間工学領域, 主任研究員 (60721496)
津田 宏治  東京大学, 大学院新領域創成科学研究科, 教授 (90357517)
伊藤 智之  東北大学, 工学研究科, 助教 (40987880)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥44,720,000 (Direct Cost: ¥34,400,000、Indirect Cost: ¥10,320,000)
Fiscal Year 2023: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2022: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2021: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2020: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Keywords進化分子工学 / 機械学習 / タンパク質 / 抗体
Outline of Research at the Start

20種類のアミノ酸が重合したタンパク質は、アミノ酸の配列に従って構造と機能が決まる。しかし、アミノ酸配列が取り得る「場合の数」(配列空間)は膨大で、その配列空間から目的機能をもつアミノ酸配列を見つけだすことは確率の低い作業である。その中で研究代表者らは近年、自然界の進化を試験管内で模倣する進化分子工学において、人工知能である機械学習が小規模な配列集団の情報から進化の方向性を示し、目的機能をもつアミノ酸配列を予測できることを実証した。本研究では、本手法をさらに高度化させることで、抗体医薬の開発を加速するプロセスを開発する。

Outline of Final Research Achievements

In this study, we have developed a technology that can predict amino acid sequences with optimized multiple functions and properties by advancing evolutionary molecular engineering, which can indicate the direction of evolution from information on small variants using machine learning. We developed a process to accelerate the development of antibody drugs that can simultaneously optimize the properties of antibody by creating a predictor for camelid heavy-chain antibody variable region fragment using machine learning with the expression level, target binding, structural stability, humaneness, and other properties of about 100 variants as training data.

Academic Significance and Societal Importance of the Research Achievements

バイオ医薬品などを中心に50兆円の市場規模をもつ機能タンパク質の機能と物性は反相関することが多い。特に抗体へのアミノ酸配列の改変では、標的結合性と構造安定性の反相関性は社会実装において課題なることが多い。本研究の成果は、タンパク質の複数の機能・物性を同時に最適化できる機械学習の潜在性を示すと共に、機能タンパク質の開発課題である開発時間・労力・コストの問題解決への可能性も示すことができた。

Report

(3 results)
  • 2023 Final Research Report ( PDF )
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (12 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results)

  • [Journal Article] Association behavior and control of the quality of cancer therapeutic bispecific diabodies expressed in Escherichia coli2020

    • Author(s)
      Hikaru Nakazawa, Tomoko Onodera-Sugano, Aruto Sugiyama, Yoshikazu Tanaka, Takamitsu Hattori, Teppei Niide, Hiromi Ogata, Ryutaro Asano, Izumi Kumagai, Mitsuo Umetsu
    • Journal Title

      Biochemical Engineering Journal

      Volume: 160 Pages: 1-9

    • DOI

      10.1016/j.bej.2020.107636

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Construction of a Circularly Connected VHH Bispecific Antibody (Cyclobody) for the Desirable Positioning of Antigen-Binding Sites.2020

    • Author(s)
      Hemmi S, Asano R, Kimura K, Umetsu M, TNakanishi T, Kumagai I, Makabe K.
    • Journal Title

      Biochem. Biophys. Res. Commun.

      Volume: 523(1) Issue: 1 Pages: 72-77

    • DOI

      10.1016/j.bbrc.2019.12.018

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemically Crosslinked Bispecific Antibodies for Cancer Therapy: Breaking from the Structural Restrictions of the Genetic Fusion Approach2020

    • Author(s)
      Ueda Asami, Umetsu Mitsuo, Nakanishi Takeshi, Hashikami Kentaro, Nakazawa Hikaru, Hattori Shuhei, Asano Ryutaro, Kumagai Izumi
    • Journal Title

      Int. J. Mol. Sci.

      Volume: 21 Issue: 3 Pages: 711-714

    • DOI

      10.3390/ijms21030711

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 機械学習の試行設計によるタンパク質のスマート進2020

    • Author(s)
      梅津 光央
    • Journal Title

      極限環境微生物学会誌

      Volume: 18 Pages: 1-7

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Identification of Indium Tin Oxide Nanoparticle-Binding Peptides via Phage Display and Biopanning Under Various Buffer Conditions2019

    • Author(s)
      Hikaru Nakazawa, Mitsuo Umetsu, Hirose Tatsuya, Takamitsu Hattori, Izumi Kumagai
    • Journal Title

      Protein and peptide letters

      Volume: 1 Issue: 6 Pages: 27-37

    • DOI

      10.2174/0929866526666191113151934

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] がん細胞選択的遺伝子治療を想定した抗体-膜貫通ペプチド酵素的架橋設計2021

    • Author(s)
      中澤 光, 安藤 優, 三浦 大輔, 梅津 光央
    • Organizer
      日本農芸化学会 2021 大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Application of next-generation sequencing analysis in the directed evolution for creating antibody mimic2021

    • Author(s)
      Tomoyuki Ito, Hafumi Nishi, Thuy Duong Nguyen, Yutaka Saito, Tomoshi Kameda, Hikaru Nakazawa, Koji Tsuda, Mitsuo Umetsu
    • Organizer
      65th Biophysical Society Annual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Library design cycle for efficient exploring in sequence space -design assist for enzyme and antibody-2020

    • Author(s)
      Mitsuo Umetsu
    • Organizer
      第58回 日本生物物理学会年会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Protein-based molecular evolution for nano-bioengineering2020

    • Author(s)
      Mitsuo Umetsu
    • Organizer
      The 4th Symposium for The Core Research Cluster for Materials Science andthe 3rd Symposium on International Joint Graduate Program in Materials Science
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 機械学習支援による進化分子工学:機械学習が求める実験データの質2020

    • Author(s)
      梅津 光央
    • Organizer
      新化学技術推進協会ライフサイエンス技術部会反応分科会勉強会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 抗体をタンパク質工学する:成熟操作と二重特異化2020

    • Author(s)
      梅津 光央
    • Organizer
      理研ー星薬科大学ー東北大学大学院薬学研究科シンポジウム
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 抗体の開発・生産に向けた効率的スクリーニング技術開発2020

    • Author(s)
      梅津 光央
    • Organizer
      2021年日本農芸化学会大会シンポジウム
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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