Srcは翻訳機構を乗っ取ることで腫瘍細胞の浸潤を促進する
Benjamin Bonnard1, Anouk Chatefau1, Cyril Dourthe2
1Bordeaux Institute of Oncology, BRIC U1312, INSERM, Université de Bordeaux, 33076 Bordeaux, France.
Cell reports
|February 24, 2026
まとめ
Src癌遺伝子はmRNA翻訳と真核翻訳開始因子3(eIF3)複合体発現を調節することにより、がん細胞の浸潤を制御する。これはinvadosome形成、細胞外マトリックス分解、肝細胞癌(HCC)の進行に影響を与える。
科学分野:
- 分子腫瘍学
- がん細胞生物学
- シグナル伝達
背景:
- Src癌遺伝子は、がん細胞の浸潤に関与している。
- Invadosomesは、細胞外マトリックス(ECM)の分解に不可欠である。
- 真核翻訳開始因子3(eIF3)複合体は、invadosomeの維持に不可欠である。
研究 の 目的:
- SrcがmRNA翻訳を調節する役割と、invadosome形成への影響を調査する。
- SrcがeIF3サブユニットの発現と機能にどのように影響するかを決定する。
- Src、eIF3サブユニット、および肝細胞癌(HCC)の予後との相関を探索する。
主な方法:
- SrcによるmRNA翻訳およびeIF3サブユニット(eIF3h、eIF3e、eIF3d)の発現の調節を調査した。
- Srcによる古典的(PI3K/AKT/mTORを介したeIF4E依存性)および非古典的翻訳の調節を分析した。
- SrcおよびeIF3h/e/dの過剰発現とHCC患者の予後および腫瘍浸潤との相関を分析した。
主要な成果:
- SrcはmRNA翻訳を調節し、主要なeIF3サブユニット(eIF3h、eIF3e、eIF3d)の発現を制御する。
- Srcは、invadosome機能に不可欠な、古典的および非古典的翻訳経路の両方を調節する。
- SrcおよびeIF3サブユニットの過剰発現は、HCCの予後不良、ECM分解の増加、腫瘍浸潤と相関する。
結論:
- Srcは翻訳開始の主要な調節因子であり、invadosome形成およびECM分解に影響を与える。
- Srcを介した翻訳制御は、腫瘍細胞の浸潤に寄与する。
- SrcおよびeIF3サブユニットは、HCCの潜在的な予後マーカーとして機能する。
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