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Structure based study of human serum albumin complex with antibiotics to improve the multidrug antimicrobial therapy.

Research Project

Project/Area Number 20K16060
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47060:Clinical pharmacy-related
Research InstitutionFujita Health University

Principal Investigator

Kawai Akito  藤田医科大学, 医学部, 講師 (20435150)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords構造生物学 / ヒト血清アルブミン / 薬剤感受性 / 抗菌薬 / 薬剤感受性試験 / アルブミン / X線結晶構造解析 / 血漿タンパク結合
Outline of Research at the Start

感染症治療の実臨床では複数の抗菌薬や抗菌薬と他の薬剤といった多剤併用治療が行われる。血漿タンパク結合率の高い抗菌薬では、ヒト血清アルブミン(HSA)結合で競合する薬物が併用されると治療効果の低下が懸念される。しかし、現状では抗菌薬とHSAの相互作用情報が少なく、併用薬の影響を予測、検証するのが難しい。そこで本研究では、X線結晶構造解析により抗菌薬とHSAの詳細な相互作用を解明する。これを基に競合的にHSAに結合する薬物を選出し、その薬物存在下で抗菌薬の感受性の変化を評価する。この一連の解析を分子骨格の異なる11種の抗菌薬で実施し、「併用薬物を考慮した最適な抗菌薬の投与設計」の礎を築く。

Outline of Final Research Achievements

Plasma protein binding is an essential factor in drug activity. Some antibiotics interact with human serum albumin (HSA), an abundant protein in human plasma. When the binding fraction was reduced, active drug concentrations are reflected in enhanced antimicrobial activity. However, the knowledge of the detail binding scheme of antibiotics with HSA is limited. In this study, we examined the biding scheme of antibiotics containing typical molecular skeletons to HSA using X-ray crystallography. As a result, we succeed to crystalize seven complexes of HSA and antibiotics and determined four crystal structures. Based on the structure, we selected the competitive drug for binding to HSA and experimentally confirmed that the susceptibility of antibiotics was changed when the competitive drug was present.

Academic Significance and Societal Importance of the Research Achievements

HSAは抗菌薬だけでなく抗がん剤や抗炎症薬など多くの薬と相互作用し、その結合変化によって薬効が左右される。特に救命的な重要性を有する抗菌薬は静脈内に直接投与されるものが多く、血中HSA濃度と同等になることから、併用薬とHSAの結合部位を取り合えば薬効変化が懸念される。本研究で得られた抗菌薬とHSAの詳細な相互作用様式は、併用注意の薬物リスト作成に役に立ち、効果的な薬物療法の設計に応用されることが期待できる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (1 results)

  • [Journal Article] Structural Basis of the Change in the Interaction Between Mycophenolic Acid and Subdomain IIA of Human Serum Albumin During Renal Failure2022

    • Author(s)
      Yamasaki Keishi、Teshima Honoka、Yukizawa Reina、Kuyama Koki、Tsukigawa Kenji、Nishi Koji、Otagiri Masaki、Kawai Akito
    • Journal Title

      Journal of Medicinal Chemistry

      Volume: 66 Issue: 1 Pages: 951-961

    • DOI

      10.1021/acs.jmedchem.2c01790

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chlorine Atoms of an Aripiprazole Molecule Control the Geometry and Motion of Aripiprazole and Deschloro-aripiprazole in Subdomain IIIA of Human Serum Albumin2022

    • Author(s)
      Kawai Akito、Kobashigawa Yoshihiro、Hirata Kenshiro、Morioka Hiroshi、Imoto Shuhei、Nishi Koji、Chuang Victor Tuan Giam、Yamasaki Keishi、Otagiri Masaki
    • Journal Title

      ACS Omega

      Volume: 7 Issue: 34 Pages: 29944-29951

    • DOI

      10.1021/acsomega.2c02929

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Myristate on the Induced Circular Dichroism Spectra of Aripiprazole Bound to Human Serum Albumin: A Structural?Chemical Investigation2022

    • Author(s)
      Hirata Kenshiro、Kawai Akito、Chuang Victor Tuan Giam、Sakurama Keiki、Nishi Koji、Yamasaki Keishi、Otagiri Masaki
    • Journal Title

      ACS Omega

      Volume: 7 Issue: 5 Pages: 4413-4419

    • DOI

      10.1021/acsomega.1c06220

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Functional and Structural Characterization of Acquired 16S rRNA Methyltransferase NpmB1 Conferring Pan-Aminoglycoside Resistance2021

    • Author(s)
      Kawai Akito、Suzuki Masahiro、Tsukamoto Kentaro、Minato Yusuke、Doi Yohei
    • Journal Title

      Antimicrobial Agents and Chemotherapy

      Volume: 65 Issue: 10

    • DOI

      10.1128/aac.01009-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interaction of Benzbromarone with Subdomains IIIA and IB/IIA on Human Serum Albumin as the Primary and Secondary Binding Regions2021

    • Author(s)
      Yamasaki Keishi、Kawai Akito、Sakurama Keiki、Udo Nagiko、Yoshino Yuta、Saito Yuki、Tsukigawa Kenji、Nishi Koji、Otagiri Masaki
    • Journal Title

      Molecular Pharmaceutics

      Volume: 18 Issue: 3 Pages: 1061-1070

    • DOI

      10.1021/acs.molpharmaceut.0c01004

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ヒト血清アルブミンとアリピプラゾール誘導体の誘起CDスペクトル変化に関する構造生物化学的考察2023

    • Author(s)
      河合 聡人 , 小橋川 敬博 , 平田 憲史郎 , 森岡 弘志 , 井本 修平 , 西 弘二 , 山崎 啓之 , 小田切 優樹
    • Organizer
      日本薬学会第143年会
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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