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2020 Fiscal Year Final Research Report

Analysis of the molecular mechanism of PSMA in prostate cancer cells

Research Project

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Project/Area Number 18K09137
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56030:Urology-related
Research InstitutionEhime University

Principal Investigator

Miura Noriyoshi  愛媛大学, 医学部附属病院, 講師 (80554427)

Co-Investigator(Kenkyū-buntansha) 雑賀 隆史  愛媛大学, 医学系研究科, 教授 (10314676)
東山 繁樹  愛媛大学, プロテオサイエンスセンター, 教授 (60202272)
菊川 忠彦  愛媛大学, 医学系研究科, 准教授 (70444734)
Project Period (FY) 2018-04-01 – 2021-03-31
KeywordsPSMA / tumor endothelial cells / HUVECs / LNCaP / tube formation / prostate cancer specimen
Outline of Final Research Achievements

We conclude that PSMA-positive membranes released from PSMA-expressing prostate cancer cells transform PSMA-negative endothelial cells into PSMA-positive endothelial cells. PSMA-endothelial cells acquire high angiogenic activity. PSMA-expressing epithelial prostate cancer cells in human prostate tumors may contribute to tumor angiogenesis through the transformation of PSMA-negative endothelial cells into PSMA-positive tumor endothelial cells in human prostate cancer tissues.

Free Research Field

Oncology

Academic Significance and Societal Importance of the Research Achievements

PSMAが前立腺癌の増殖に寄与する機能的分子メカニズム、および癌微小環境形成・腫瘍血管新生におけるその役割は不明な点が多い。今回の研究では、前立腺癌がPSMAを介して、周囲の既存血管に作用して、自身の組織へと血管を引き込むことで、癌細胞自身の生存維持のみならず、高い増殖能や転移能を獲得していく可能性が示唆された。さらに詳細に解析を進めることで、将来前立腺癌腫瘍血管特異的に標的とする血管新生阻害剤の開発に繋がると考えている。

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Published: 2022-01-27  

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