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2020 Fiscal Year Final Research Report

Development of new therapeutic agents for pancreatic cancer targeting 14-3-3dzeta

Research Project

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Project/Area Number 19K22568
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 50:Oncology and related fields
Research InstitutionKeio University

Principal Investigator

Saya Hideyuki  慶應義塾大学, 医学部(信濃町), 教授 (80264282)

Co-Investigator(Kenkyū-buntansha) 齋藤 潤  慶應義塾大学, 医学部(信濃町), 共同研究員 (80837378)
Project Period (FY) 2019-06-28 – 2021-03-31
Keywords14-3-3ζ / ベンズアルデヒド
Outline of Final Research Achievements

We have been elucidating the mechanism of action by focusing on the cancer cell-suppressing effect of aromatic aldehyde called Benzaldehyde (BA) for several years. As a result, BA showed no cytotoxicity to normal cells and showed a remarkable tumor suppressive effect on pancreatic cancer cell BxPC3, lung cancer cell line A549, etc. BA was found to inhibit the binding of 14-3-3ζ to the phosphorylated moiety of its client protein. In this study, we focused on Axl, which is one of the client proteins of 14-3-3ζ, because Axl is increased in cells which become resistant to molecular-targeted drugs and radiotherapy. We found that BA suppresses Axl expression and may have a tolerance-overcoming effect.

Free Research Field

腫瘍生物学

Academic Significance and Societal Importance of the Research Achievements

Axlはがんの悪性化に関わるきわめて重要な因子であり、特にオシメルチニブなどの分子標的薬、放射線治療などに耐性となった細胞においてAxlの発現が高まることが見出されており、その意義と分子機構が注目されている。今回の研究によって14-3-3ζを介した Axlの安定化および活性化をBenzaldehydeが阻害することが明らかとなり、この化合物が何故治療抵抗性細胞に対して効果を発揮するのか、その一端を明らかにすることができた。今後この極めて毒性の低い化合物が膵臓がんなど治療抵抗性がんの治療に用いることができるように、詳細な非臨床および臨床研究を進める予定である。

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Published: 2022-01-27  

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