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2022 Fiscal Year Final Research Report

Understanding the influence of PXR activation on the epithelial mesenchymal transition of liver cancer cells

Research Project

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Project/Area Number 21K15317
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47060:Clinical pharmacy-related
Research InstitutionUniversity of Shizuoka

Principal Investigator

Shizu Royta  静岡県立大学, 薬学部, 助教 (50803912)

Project Period (FY) 2021-04-01 – 2023-03-31
Keywords核内受容体 / 上皮間葉転換 / PXR / 肝がん / 肝星細胞
Outline of Final Research Achievements

In this study, we investigated the molecular mechanism underlying the inhibitory effect of PXR on the promotion of liver cancer cells. Our findings reveal that activation of PXR leads to the suppression of epithelial-mesenchymal transition (EMT) in liver cancer cells, a critical process in cancer development. Furthermore, our results suggest that PXR-mediated inhibition of liver cancer cells is attributed to its ability to impede the trans-differentiation of hepatic stellate cells and inhibit the secretion of humoral factors known to induce EMT in liver cancer cells. Collectively, our findings identify PXR as a key regulator of EMT and a potential target for liver cancer treatment.

Free Research Field

肝がん

Academic Significance and Societal Importance of the Research Achievements

現在の全身的なマルチキナーゼ阻害薬による肝がん化学療法は、5年再発率が80%と非常に高く、再発予防効果の向上のためには、肝がん特異的な治療ターゲット見出し、既存のがん治療に加えて、長期間にわたってがんの進行をコントロールできる治療計画が求められる。上皮間葉転換は、がん細胞が浸潤能や転移能を獲得するための重要なステップであり、肝がん治療の絶好のターゲットとなる。本研究で見出した肝がん細胞の上皮間葉転換調節因子であるPXRは、肝特異的に発現する転写因子であり、そのEMTの抑制作用は、PXRの発現している肝のみで起こると考えられ、全身的なEMTの抑制に伴う副作用発現の懸念もないと考えられる。

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Published: 2024-01-30  

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