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2023 Fiscal Year Final Research Report

Functional analysis of perivascular metastatic niche factors in lung

Research Project

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Project/Area Number 22K20818
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionKanazawa University

Principal Investigator

Hongu Tsunaki  金沢大学, がん進展制御研究所, 助教 (30628920)

Project Period (FY) 2022-08-31 – 2024-03-31
Keywords転移 / 乳がん / 腫瘍微小環境 / 血管ニッチ
Outline of Final Research Achievements

I identified SERPINE1 as a secretion molecule which provide from lung endothelial cells during metastatic progression of breast cancer in lung. SERPINE1 promoted the resistance to chemotherapy reagent, pacritaxel, in breast cancer cells.
Furthermore, the regulation mechanism of SERPINE1 expression was analyzed using lung endothelial cells. As a result, it was identified that YAP-TEAD activity is up-regulated in lung endothelial cells associated with metastasis and regulates SERPINE1 expression during metastasis. Thus, SERPINE1 inhibition may suppress chemotherapy resistance of breast cancer metastasis in lung.

Free Research Field

腫瘍学

Academic Significance and Societal Importance of the Research Achievements

転移性乳癌は、年間数十万人もの患者が死亡している極めて悪質な疾患である。しかし、現在基本的に完治させる方法が存在せず、その分子メカニズムの解明および治療法の確立は急務である。特に、進行した乳がん転移においては、抗がん剤に対する抵抗性が強く、効果的に転移を阻害する方法論が求められている。本研究では、乳がんの肺転移が起こった際に、肺血管内皮細胞からSERPINE1が分泌され、抗がん剤抵抗性に寄与することを明らかにした。SERPINE1は転移性乳癌の治療における効果的な薬剤標的となり得る。

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Published: 2025-01-30  

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