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2022 Fiscal Year Final Research Report

Development of novel tumor marker and targeting-antibody against pancreatic ductal adenocarcinoma

Research Project

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Project/Area Number 20H03527
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionNiigata University

Principal Investigator

Kondo Eisaku  新潟大学, 医歯学系, 教授 (30252951)

Co-Investigator(Kenkyū-buntansha) 飯岡 英和  新潟大学, 医歯学系, 助教 (20425416)
阪口 政清  岡山大学, 医歯薬学域, 教授 (70379840)
齋藤 憲  新潟大学, 医歯学系, 准教授 (70426584)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords膵がん / バイオマーカー / 抗体 / 標的化
Outline of Final Research Achievements

We successfully identified the responsible molecule for pancreatic cancer-homing peptide employing IP-LC/MS/MS technology. Knockout clone of the molecule showed growth retardation of the grafted tumor and augmented drug-sensitivity on PDAC cells. Alternatively, we obtained novel antibody which recongnizes the molecule on FFPE tumor specimens, which revealed its selective and prominent membrane expression on PDAC tissues. We are now moving to develop the fucntional antibody recognizing the extracellular domain of the molecule, which leads to achieve novel ADC therapeutics to PDAC patients.

Free Research Field

腫瘍病理学

Academic Significance and Societal Importance of the Research Achievements

我々が独自に開発した膵がん細胞への選択的かつ強力な吸収性を発揮する膵がん細胞ホーミングペプチドをbaitにして、これと結合する膵がん細胞上発現分子の探索を行い、現行で報告の希少な新たな膵がん発現マーカー分子を同定できた。この結果を基に、新規抗体を作成し、患者腫瘍組織・正常組織における発現の特徴を解析し詳細な情報を得、同分子の患者腫瘍治療への応用の有用性・従来の治療標的分子と比較した卓越性を確認できた。本研究により、難治癌である膵がんの抗体医薬開発への確証性が得られたことは、次段階としての創薬研究への展開の重要な基盤的知見となる。

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Published: 2024-01-30  

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