エクトピックFGFR1は,前立腺がん細胞の細胞内コレステロールのプールを増加させる

Ziying Liu^1,2, Yuepeng Ke^1,2, Tingting Hong^2,3

¹Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Texas A&M University, Houston, TX 77030, USA.

International journal of molecular sciences

|February 13, 2026

まとめ

線維細胞成長因子受容体1 (FGFR1) は,コレステロールの吸収と合成を増加させ,前立腺がん (PCa) の進行を促し,カストレーション耐性PCa (CRPC) に新しい治療標的を提供します.

科学分野:

腫瘍学腫瘍学
分子生物学は分子生物学である.
バイオケミストリーバイオケミストリー

背景:

前立腺がん (PCa) は男性の主要ながんであり,しばしばアンドロゲン欠乏療法 (ADT) で治療されます.
ほとんどのPCaは,コレステロール主導のステロイド生成のようなメカニズムにより,カストレーション抵抗性PCa (CRPC) に進行します.
低密度リポプロテイン (LDL) の吸収はPCa細胞の主要なコレステロール源ですが,その調節は不明です.

研究の目的:

PCa.におけるコレステロール代謝の調節におけるフィブロブラスト成長因子受容体1 (FGFR1) の役割を調査する.
PCaにおけるADT耐性を克服するための治療標的を特定する.

主な方法:

FGFR1-null DU145細胞を生成し,比較トランスクリプトーム解析を行った.
FGFR1のシグナル伝達経路に関するメカニズム研究を行い,ステロール調節要素結合タンパク質2 (SREBP2) の活性化も含む.
臨床データとFGFR1発現を相関させる in silico分析を行った.

主要な成果:

FGFR1の消去は,LDLの吸収とコレステロールの合成に関与する遺伝子の発現を低下させ,細胞のコレステロールを低下させます.
FGFR1は,ERKシグナル伝達を通じてSREBP2の活性化を高め,LDL受容体 (LDLR) とコレステロール合成酵素を上調する.
高FGFR1発現は,PCaにおける高LDLR発現と有害な臨床病理学的特徴と相関する.

結論:

FGFR1は,PCa細胞におけるコレステロールの恒常性を調節する上で重要な役割を果たします.
FGFR1を標的にすることは,コレステロールの吸収と合成を抑制することによって,CRPCのための新しい治療戦略を表しています.

キーワード:

コレステロールコレステロールコレステロール線維芽細胞の成長因子である低密度リポプロテイン前立腺がんは前立腺がんである.ステロールの規制要素-結合タンパク質2 2

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