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Development of sterically controlled boranophosphate nucleic acid drugs with both high potency and low toxicity

Research Project

Project/Area Number 23K21353
Project/Area Number (Other) 21H02610 (2021-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2021-2023)
Section一般
Review Section Basic Section 47010:Pharmaceutical chemistry and drug development sciences-related
Research InstitutionTokyo University of Science

Principal Investigator

Wada Takeshi  東京理科大学, 薬学部生命創薬科学科, 教授 (90240548)

Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2024: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords核酸医薬 / アンチセンス核酸 / ボラノホスフェート核酸 / 不斉合成 / 立体制御 / リン原子修飾核酸 / 立体選択的合成
Outline of Research at the Start

本研究では、リン原子の立体化学が制御されたPB-DNAの合成法を開発する。PB-DNAの合成では、天然型のDNAやホスホロチオエートDNA合成で用いられるアシル型の塩基部保護基を用いることができない。塩基部アミノ基をアシル基で保護すると、合成中間体の亜リン酸誘導体をボラノ化する際にアミドが非可逆的に還元されてアルキルアミノ基に変換されてしまうからである。そこで本研究では、塩基部無保護のオキサザホスホリジンモノマーの構造を最適化し、リン原子の立体化学が厳密に制御されたPB-DNAを合成し、その性質を明らかにする。

Outline of Final Research Achievements

The objective of this study is to develop boranophosphate oligonucleotide therapeutics that have high target gene expression control activity with low toxicity by controlling the stereochemistry of the phosphorus atom. In the synthesis of boranophosphate oligonucleotides, acyl-type base protecting groups, which are used in the synthesis of natural nucleic acids and phosphorothioate nucleic acids, cannot be employed. This is because protecting the base amino group with an acyl group causes the amide to irreversibly reduce to an alkyl amino group during the boronation of the phosphite intermediates. Therefore, in this study, we developed a new synthetic method using novel oxazaphosphoridine derivatives without the use of base-protecting groups as monomer units for the synthesis of stereopure boranophosphate oligonucleotides.

Academic Significance and Societal Importance of the Research Achievements

新規立体選択的合成法を開発した。ボラノホスフェートDNAの合成では、リン原子にボラノ基を導入する際に、アミドの還元が起こるため、従来の核酸塩基部保護基を用いることができない。そこで本研究では、塩基部に保護基を導入せずにボラノホスフェートDNAを立体選択的に合成する新しい方法を開発を行なった。
本研究により、次世代核酸医薬として期待されるリン原子の立体化学が制御されたボラノホスフェートDNAが創製されれば、核酸医薬の毒性の軽減と飛躍的な活性の向上が期待でき、医療・医薬品業界に与えるインパクトは計り知れない。

Report

(3 results)
  • 2024 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (34 results)

All 2023 2022 2021

All Journal Article (15 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 13 results,  Open Access: 10 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 13 results) Book (3 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)

  • [Journal Article] Development of a new synthetic method for oligodeoxynucleotides using 3′-<i>H</i>-phosphonamidate derivatives2023

    • Author(s)
      Tsurusaki Taiki、Sato Kazuki、Wada Takeshi
    • Journal Title

      Organic & Biomolecular Chemistry

      Volume: 21 Issue: 12 Pages: 2486-2492

    • DOI

      10.1039/d2ob02292c

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Properties of artificial cationic oligodiaminosaccharides and oligopeptides that bind to A-type oligonucleotide duplexes2023

    • Author(s)
      Shiraishi Tomomi、Sato Kazuki、Hara Rintaro Iwata、Wada Takeshi
    • Journal Title

      Nucleosides, Nucleotides, Nucleic Acids

      Volume: - Issue: 8 Pages: 1-18

    • DOI

      10.1080/15257770.2023.2182444

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solid-phase synthesis and properties of stereocontrolled boranophosphate/phosphate and phosphorothioate/phosphate chimeric oligouridylates2023

    • Author(s)
      Sato Kazuki、Nukaga Yohei、Wada Takeshi
    • Journal Title

      Royal Society Open Science

      Volume: 10 Issue: 4

    • DOI

      10.1098/rsos.230095

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fucosylated heparan sulfate from the midgut gland of Patinopecten yessoensis2023

    • Author(s)
      Onishi Shoichi、Shionoya Kento、Sato Kazuki、Mubuchi Ayumu、Maruyama Shiori、Nakajima Tadaaki、Komeno Masahiro、Miyata Shinji、Yoshizawa Kazumi、Wada Takeshi、Linhardt Robert J.、Toida Toshihiko、Higashi Kyohei
    • Journal Title

      Carbohydrate Polymers

      Volume: 313 Pages: 120847-120847

    • DOI

      10.1016/j.carbpol.2023.120847

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Solid-phase synthesis of N-trichloroacetyl mannosamine 1-phosphate repeating units mimicking capsular polysaccharide derived from Neisseria meningitidis serotype A2022

    • Author(s)
      Sato Kazuki、Chiba Akie、Shiraishi Tomomi、Ogawa Yuki、Hara Rintaro Iwata、Wada Takeshi
    • Journal Title

      Carbohydrate Research

      Volume: 518 Pages: 108585-108585

    • DOI

      10.1016/j.carres.2022.108585

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identification and Quantitative Analysis of 2-Fluoromethamphetamine and Its Metabolites in Human Urine2022

    • Author(s)
      Ishii Ayumu、Sato Kazuki、Kusakabe Kosuke、Kato Noriyuki、Wada Takeshi
    • Journal Title

      Journal of Analytical Toxicology

      Volume: 47 Issue: 1 Pages: 59-65

    • DOI

      10.1093/jat/bkac026

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and properties of oligodiaminogalactoses that bind to A-type oligonucleotide duplexes2022

    • Author(s)
      Shiraishi Tomomi、Sato Kazuki、Hara Rintaro Iwata、Wada Takeshi
    • Journal Title

      Organic & Biomolecular Chemistry

      Volume: 20 Issue: 42 Pages: 8243-8258

    • DOI

      10.1039/d2ob01575g

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Molecular Technologies for Oligonucleotide Therapeutics-1: Properties and Synthesis of Boranophosphate DNAs2022

    • Author(s)
      Sato Kazuki、Wada Takeshi
    • Journal Title

      Springer

      Volume: - Pages: 1-20

    • DOI

      10.1007/978-981-16-1313-5_73-1

    • ISBN
      9789811613135
    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] New Molecular Technologies for Oligonucleotide Therapeutics-2: A-Type Nucleic Acid Duplex-Specific Binding Oligocationic Molecules for Oligonucleotide Therapeutics2022

    • Author(s)
      Hara Rintaro Iwata、Wada Takeshi
    • Journal Title

      Springer

      Volume: - Pages: 1-13

    • DOI

      10.1007/978-981-16-1313-5_103-1

    • ISBN
      9789811613135
    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Synthesis of thioamides from thiocarboxylic acids using phosphonium-type condensing reagents2021

    • Author(s)
      Suzuki Ayaka, Takagi Kazunori, Sato Kazuki, Wada Takeshi
    • Journal Title

      Tetrahedron Lett.

      Volume: 75 Pages: 153179-153179

    • DOI

      10.1016/j.tetlet.2021.153179

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inhibition of off-target cleavage by RNase H using an artificial cationic oligosaccharide2021

    • Author(s)
      Rintaro Iwata Hara, Takeshi Wada
    • Journal Title

      Organic & Biomolecular Chemistry

      Volume: 19 Issue: 31 Pages: 6865-6870

    • DOI

      10.1039/d1ob00983d

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Solid-Phase Stereocontrolled Synthesis of Oligomeric P-Modified Glycosyl Phosphate Derivatives Using the Oxazaphospholidine Method2021

    • Author(s)
      Sato Kazuki, Hagio Tomoya, Sano Michi, Muramoto Kazumasa, Yaoita Aya, Noro Mihoko, Hara Rintaro Iwata, Wada Takeshi
    • Journal Title

      ACS Omega

      Volume: 6 Issue: 30 Pages: 20026-20041

    • DOI

      10.1021/acsomega.1c03058

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cholesterol-functionalized DNA/RNA heteroduplexes cross the blood-brain barrier and knock down genes in the rodent CNS.2021

    • Author(s)
      Nagata T, Dwyer CA, Yoshida-Tanaka K, Ihara K, Ohyagi M, Kaburagi H, Miyata H, Ebihara S, Yoshioka K, Ishii T, Miyata K, Miyata K, Powers B, Igari T, Yamamoto S, Arimura N, Hirabayashi H, Uchihara T, Hara RI, Wada T, Bennett CF, Seth PP, Rigo F, Yokota T
    • Journal Title

      Nat Biotechnol

      Volume: 39 Issue: 12 Pages: 1529-1536

    • DOI

      10.1038/s41587-021-00972-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Solution-phase synthesis of oligodeoxyribonucleotides using the H-phosphonate method with N-unprotected 5′-phosphite monomers2021

    • Author(s)
      Matsuda Hiromasa, Yoshida Erina, Shinoda Takaaki, Sato Kazuki, Hara Rintaro Iwata, Wada Takeshi
    • Journal Title

      RSC Adv.

      Volume: 11 Issue: 60 Pages: 38094-38107

    • DOI

      10.1039/d1ra06619f

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Solid-phase synthesis of oligouridine boranophosphates using the H-boranophosphonate method with 2′-O-(2-cyanoethoxymethyl) protection2021

    • Author(s)
      Matsuda Hiromasa, Ito Hiroaki, Nukaga Yohei, Uehara Sho, Sato Kazuki, Hara Rintaro Iwata, Wada Takeshi
    • Journal Title

      Tetrahedron Lett.

      Volume: 87 Pages: 153526-153526

    • DOI

      10.1016/j.tetlet.2021.153526

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] リガンド結合型カチオン性ペプチドによるsiRNAのDDS技術2023

    • Author(s)
      和田猛
    • Organizer
      柏の葉ライフサイエンス協議会発足記念「交流の葉」コウリュウノハ
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の有効性と安全性を向上させる新規分子技術2022

    • Author(s)
      和田猛
    • Organizer
      第9回筑波大学・東京理科大学合同リトリート
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の安定化・毒性軽減・デリバリーに有効な新規分子技術2022

    • Author(s)
      和田猛
    • Organizer
      第 38 回日本 DDS 学会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の安定化とデリバリーに有効な新規分子技術2022

    • Author(s)
      和田猛
    • Organizer
      大隅ライフサイエンス研究会シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の有効性と安全性を向上させる新規分子技術2022

    • Author(s)
      和田猛
    • Organizer
      第28回日本遺伝子細胞治療学会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] A brief history of stereopure oligonucleotide therapeutics: chemical synthesis and applications2022

    • Author(s)
      和田猛
    • Organizer
      日本核酸医薬学会第7回年会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の安定性・有効性・安全性を向上させるカチオン性人工分子の開発2022

    • Author(s)
      和田猛
    • Organizer
      データサイエンス医療研究部門・核酸創薬研究部門合同シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 日本発の新規モダリティを継続的に生み出すためには何が必要か?2021

    • Author(s)
      和田猛
    • Organizer
      BioJapan2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 革新的次世代医薬への期待2021

    • Author(s)
      和田猛
    • Organizer
      TUSフォーラム2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の有効性と安全性を向上させる新規分子技術2021

    • Author(s)
      和田猛
    • Organizer
      第23回ケムステバーチャルシンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 核酸医薬の展望~新たな合成技術が拓く未来2021

    • Author(s)
      和田猛
    • Organizer
      CPhI Japan 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 究極の核酸合成反応を目指して2021

    • Author(s)
      和田猛
    • Organizer
      The 48th International Symposium on Nucleic Acids Chemistry 2021 (ISNAC2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of new molecular technologies for oligonucleotide therapeutics2021

    • Author(s)
      Takeshi Wada
    • Organizer
      The International Chemical Congress of Pacific Basin Societies 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] 核酸医薬の創製と応用展開《普及版》2022

    • Author(s)
      和田猛
    • Total Pages
      278
    • Publisher
      シーエムシー出版
    • ISBN
      9784781316406
    • Related Report
      2022 Annual Research Report
  • [Book] 進化を続ける核酸化学2021

    • Author(s)
      日本化学会
    • Total Pages
      228
    • Publisher
      化学同人
    • ISBN
      9784759814019
    • Related Report
      2021 Annual Research Report
  • [Book] 核酸医薬 本領を発揮する創薬モダリティ2021

    • Author(s)
      横田 隆徳
    • Total Pages
      204
    • Publisher
      羊土社
    • ISBN
      9784758103985
    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] H-ホスホネート法を用いたモルフォリノ核酸の製造方法2022

    • Inventor(s)
      和田猛、鶴﨑大樹、佐藤一樹、高橋大輔、鳥居高好
    • Industrial Property Rights Holder
      和田猛、鶴﨑大樹、佐藤一樹、高橋大輔、鳥居高好
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] ホスホロチオエート及びボラノホスフェートを含むキメラ型核酸オリゴマー、及びその製造方法2022

    • Inventor(s)
      和田猛、高橋裕平、佐藤一樹
    • Industrial Property Rights Holder
      和田猛、高橋裕平、佐藤一樹
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] ホスホロチオエート及びボラノホスフェートを含むキメラ型核酸オリゴマー、及びその製造方法2021

    • Inventor(s)
      5.和田猛、佐藤一樹、髙橋裕平
    • Industrial Property Rights Holder
      5.和田猛、佐藤一樹、髙橋裕平
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-092873
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2026-01-16  

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