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2022 Fiscal Year Final Research Report

Exploring the potential of PIP-CBI derivatives with amino groups as anticancer agents for drug discovery

Research Project

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Project/Area Number 20K07710
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionChiba Cancer Center (Research Institute)

Principal Investigator

WATANABE TAKAYOSHI  千葉県がんセンター(研究所), がん研究開発グループ, 研究員 (60526060)

Co-Investigator(Kenkyū-buntansha) 高取 敦志  千葉県がんセンター(研究所), がん治療開発グループ がん先進治療開発研究室, 室長 (40455390)
越川 信子  千葉県がんセンター(研究所), がん遺伝創薬研究室, 主任上席研究員 (90260249)
Project Period (FY) 2020-04-01 – 2023-03-31
KeywordsPIポリアミド / hTERT / PIP-CBI / アミノ基
Outline of Final Research Achievements

CCC-030, a gene therapy drug that binds to the gene sequence of DNA encoding human telomerase transcriptase (hTERT) and suppresses its expression, has an antitumor effect of 100-200 nM against cancer cells overexpressing hTERT. In this study, we aimed to further improve the efficacy of CCC-030. Three derivatives are novel: NH2-CCC-030 with an amino group at the N-terminus of CCC-030, αNH2-CCC-030 withα-position on γ-turn, and 2NH2-CCC-030 with both the N-terminus and α-position was synthesized. These three derivatives showed excellent results in terms of DNA binding power, cytotoxicity, and antitumor effect in animal experiments.

Free Research Field

ケミカルバイオロジー

Academic Significance and Societal Importance of the Research Achievements

本研究は従来のタンパク質を標的とする抗がん剤とは異なり、癌に特異的な遺伝子配列そのものを標的とするPIP-CBI治療薬に対し更に高い薬効を持たせることに成功した点で意義深い。今回の系では主にhTERTを標的としたPIP-CBIを用いたが、KRASやMIYの増幅配列を標的としたPIP-CBIなどにも応用が利き、未だ治療戦略が定まっていない社会的に問題となっている難治性癌に対する強力な遺伝子治療薬を創薬出来る可能性を高めたと言える。

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Published: 2024-01-30  

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