部位特異的HPV18インテグレーションは、代謝再プログラミングによるSpHK1/S1P/S1PR1経路の機能不全を介して子宮頸癌発生を促進する
Liming Wang1, Xiaomin Li2, Ci Ren3
1Zhejiang Key Laboratory of Precision Diagnosis and Therapy for Major Gynecological Diseases, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
Cell death & disease
|January 9, 2026
まとめ
高リスク型ヒトパピローマウイルスインテグレーションは、ゲノム構造を変化させ、がん関連遺伝子を活性化することにより、子宮頸がんを駆動する。スフィンゴシン-1-リン酸経路の標的化は腫瘍増殖を阻害し、新たな治療戦略を提供する。
科学分野:
- 腫瘍学; 分子生物学; 遺伝学
背景:
- 高リスク型ヒトパピローマウイルス(HPV)の宿主DNAへのインテグレーションは、子宮頸がん発生に不可欠である。; HPV誘発性発がんを駆動する正確な分子メカニズムは、完全には理解されていない。
研究 の 目的:
- HPV18インテグレーションのゲノムおよび分子への影響を調査すること。; HPV誘発性悪性変換に関与するシグナル伝達経路を解明すること。; 子宮頸がんの潜在的な治療標的を同定すること。
主な方法:
- CRISPR/Cas9技術を用いて、8q24部位特異的HPV18遺伝子ノックイン(HPV-KI)HaCaT細胞モデルを作成した。; ゲノムトポロジー、遺伝子発現(IL-17シグナル伝達、S100A8/A9を含む)、代謝再プログラミング、およびシグナル伝達経路(MAPK、NF-κB、S1P/S1PR1)を解析した。; スフィンゴシン-1-リン酸(S1P)/S1PR1経路を阻害し、HPV-KI細胞および患者由来異種移植腫瘍への影響を評価した。
主要な成果:
- HPV18インテグレーションは、トポロジカルに隣接するドメイン構造を全体的に変化させ、IL-17シグナル伝達経路およびS100A8/A9を顕著にアップレギュレーションした。; HPV-KIは細胞代謝を再プログラミングし、解糖系およびグリセロ脂質合成を増加させ、S1P分泌およびSpHK1/S1P/S1PR1経路の活性化につながった。; S1Pシグナル伝達下流のMAPKおよびNF-κB経路の活性化は、S100A8/A9発現を誘導し、悪性細胞形質転換を促進した。; S1P/S1PR1シグナル伝達の阻害は、S100A8/A9発現を低下させ、in vitroおよびin vivoで腫瘍増殖を抑制した。
結論:
- HPVインテグレーションは、重大なゲノムおよび代謝の変化を通じて子宮頸がん発生を開始する。; スフィンゴシン-1-リン酸(S1P)/S1PR1シグナル伝達経路は、S100A8/A9を介したHPV誘発性悪性変換の重要なメディエーターである。; S1P/S1PR1経路の標的化は、子宮頸がんに対する有望な治療戦略を表す。
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