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2020 Fiscal Year Final Research Report

Establishing the basis for new molecular-targeted therapies based on the signal transduction system by estrogen-related receptors for endometriosis

Research Project

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Project/Area Number 18K09295
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Kitawaki Jo  京都府立医科大学, 医学(系)研究科(研究院), 教授 (00204925)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywords子宮内膜症 / エストロゲン関連受容体 / 分子標的治療
Outline of Final Research Achievements

Endometriosis grows and regresses in an estrogen-dependent manner. However, the classical estrogen receptor (ER)α-mediated signaling pathway is less dominant. The major pathway is that mediated via PGC-1α, a representative coactivator of estrogen-related receptor (ERR)α. In this study, we demonstrated that HX531, an antagonist of RXRα (one of the coactivators of PGC-1α), suppresses cell proliferation of endometriosis by inhibiting PGC-1α and suppressing the elevation of ERβ, IL-6 and IL-8, inflammatory cytokines, and survivin, an anti-apoptotic gene. Our findings suggest that the PGC-1α-mediated system is promising for establishing new therapeutic strategies.

Free Research Field

生殖内分泌学

Academic Significance and Societal Importance of the Research Achievements

従来、エストロゲン依存性増殖機構は古典的なERαを介するシグナル伝達経路によってのみ説明されてきたが、本研究では子宮内膜症においてPGC-1αを中心とした新たなエストロゲン依存性増殖機構を示した。
さらにこの系を阻害することによって子宮内膜症の細胞増殖が抑制されることを示した。現在まで子宮内膜症を完治させる治療法はなく、疼痛を緩和させるための内分泌療法が存在するのみであった。本研究成果は新たな治療戦略確立に有望であることが示された。

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Published: 2022-01-27  

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