YTHDF2的O-GlcNAcylation对抗ERK-依赖的酸化,并抑制肺癌
Jie Li1, Wen Zhou2, Jianzhi Zhang3
1Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing 100048, China.
Fundamental research
|January 30, 2026
概括
在Thr-49中对YTHDF2的O相关的N-乙糖胺 (O-GlcNAc) 糖化对抗ERK酸化,促进其降解. 这种O-GlcNAcylation通过调高YTHDF2信号传输和调低c-Myc的影响影响肺癌的进展.
科学领域:
- 分子生物学分子生物学
- 细胞信号传输 细胞信号传输
- 癌症研究 癌症研究
背景情况:
- 细胞内O相关的N-乙糖胺 (O-GlcNAc) 糖化对信号转导和瘤发生至关重要.
- 一个m6A读者YTHDF2通过Ser-263 O-GlcNAcylation参与了与HBV相关的肝细胞癌.
研究的目的:
- 在正常条件下绘制 YTHDF2 O-GlcNAcylation 位点的地图.
- 研究YTHDF2在Thr-49的O-GlcNAcylation对瘤发生的功能影响,特别是肺癌.
主要方法:
- 电子转移解离质谱法用于绘制O-GlcNAcylation站点的地图.
- 西方涂抹和免疫沉以研究蛋白质修饰和相互作用.
- 鼠标异种移植模型以评估瘤生长 in vivo.
主要成果:
- 在不受干扰的条件下,YTHDF2 O-GlcNAcylation被映射到Thr-49中.
- Thr-49 O-GlcNAcylation 在Ser-39 中对抗ERK酸化,导致YTHDF2 降解.
- 在肺癌中,YTHDF2的降解对其下游信号进行上调,降低了c-Myc.
- 在小鼠模型中,YTHDF2-T49A突变加速了肺癌的生长.
结论:
- 在Thr-49的YTHDF2O-GlcNAcylation在调节YTHDF2稳定性和功能的过程中起着至关重要的作用.
- 这种翻译后的修改通过调节YTHDF2/c-Myc轴来影响肺瘤发生.
- O-GlcNAcylation在瘤发生过程中表现出不同的作用,这取决于细胞环境和压力条件.
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