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2020 Fiscal Year Final Research Report

Development of peptides inhibiting tumor angiogenesis and metastasis to develop a novel anti-cancer drug

Research Project

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Project/Area Number 18H02601
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 48030:Pharmacology-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Kanaho Yasunori  筑波大学, 医学医療系, 教授 (00214437)

Co-Investigator(Kenkyū-buntansha) 船越 祐司  筑波大学, 医学医療系, 助教 (30415286)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords抗癌剤 / 腫瘍血管新生 / 癌細胞浸潤・転移 / ペプチド / 低分子量G蛋白質 / Arf6
Outline of Final Research Achievements

In this project, we aim to develop an innovative, highly efficient anti-cancer drug, which inhibits both tumor angiogenesis and cancer cell metastasis, by inhibiting the small GTPase Arf6. We propose a novel Arf6-mediated cancer cell invasion mechanism: Arf6 promotes cancer cell invasion by enhancing the recycling of plasma membrane proteins mediated by the deubiquitinating enzyme TRE17. We also developed a low-molecular-weight drug lead peptide with 39 amino acids, which specifically inhibits Arf6 activation. Furthermore, we partially revealed the binding site of Arf6 for the lead peptide by the NMR analysis.

Free Research Field

細胞生物学

Academic Significance and Societal Importance of the Research Achievements

腫瘍増大に必須な現象である腫瘍血管新生に対する阻害剤が新たな抗癌剤として開発された。しかしながら、腫瘍血管新生が阻害されると癌細胞の転移能が亢進するため、血管新生阻害薬の有効性は限定的である。そのため、腫瘍血管新生と癌細胞転移の両方を同時に抑制できる新規な抗癌剤の開発が望まれる。Arf6は両機能を制御する鍵因子であり、本研究で創生した創薬リードペプチドは、単独で腫瘍血管新生と癌細胞転移を阻害する高い治療効果をもたらすとともに、患者の負担を軽減し、副作用を抑える革新的な癌治療薬となることが期待される。

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Published: 2022-01-27  

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