乳化驱动的NSUN2介导的RNA m5C修饰促进胰腺癌中的围神经入侵
Tianhao Huang1,2,3, Chonghui Hu2, Huimou Chen4
1Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, China.
Theranostics
|December 8, 2025
概括
乳酸驱动的NSUN2乳化促进胰腺癌的发生.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢途径 代谢途径
背景情况:
- 周围神经侵入 (PNI) 是胰腺管腺癌 (PDAC) 恶性瘤和预后不佳的关键因素.
- 氨酸乳化 (Kla) 是一种与代谢压力和癌症进展相关的翻译后修饰.
- RNA甲基转移酶NSUN2与癌症侵袭有关,但其在PDAC中乳化驱动PNI中的作用尚不清楚.
研究的目的:
- 阐明NSUN2在胰腺管道腺癌中对乳驱动的围神经侵入有所贡献的机制.
- 调查NSUN2乳化,围神经侵袭和PDAC患者预后之间的关联.
主要方法:
- 在人类PDAC队列中评估瘤乳酸,泛乳酸,NSUN2乳酸和PNI.
- 使用PDAC细胞系和体内模型进行功能研究,以评估瘤神经相互作用和侵入.
- 采用了包括NSUN2淘汰,CRISPR编辑,共免疫沉,RIP-seq,MeRIP-qPCR和actinomycin-D追逐在内的分子技术来分析mRNA修饰和稳定性.
主要成果:
- 乳酸化NSUN2在PDAC中高调,与严重的PNI相关,与预后较差相关.
- 抑制乳化或NSUN2减弱的瘤神经相互作用和神经侵入.
- 乳酸盐在K692处诱导NSUN2乳化,抑制其降解并促进CDCP1和STC1mRNAs的m5C修饰和稳定.
结论:
- 乳酸驱动的NSUN2 K692乳化是PDAC中围神经侵入的关键驱动因素.
- 一个乳酸-NSUN2-m5C-CDCP1/STC1轴将代谢压力诱导的乳化与亲侵入性转录的增强稳定性联系起来.
- 这一途径为减少神经入侵和改善PDAC患者的治疗结果提供了潜在的治疗点.
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