缺氧促进了神经母细胞瘤中对介酶体转录程序过渡的上腺素
Gepoliano S Chaves1, Mohansrinivas Chennakesavalu1, Kelley Moore1
1Department of Pediatrics, University of Chicago, Chicago, Illinois, USA.
Clinical and translational science
|February 22, 2026
概括
缺氧会改变上腺神经母细胞瘤细胞,使其转向介质细胞表型,增加5-hmC沉积,改善患者的生存率. 这表明缺氧会影响神经母细胞瘤中的基因表达.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 在缺氧的情况下,上腺素 (ADRN) 神经母细胞瘤细胞表现出TET1和5-基甲基细胞素 (5-hmC) 的增加.
- 缺氧对介质细胞核母细胞瘤 (MES) 血统的影响不太清楚.
研究的目的:
- 为了研究神经母细胞瘤中对缺氧的血统特异性反应.
- 确定缺氧对ADRN和MES细胞中5-hmC沉积和基因表达的影响.
- 为了将缺氧诱导的基因表达变化与患者生存结果相关联.
主要方法:
- 在正常和缺氧条件下培养ADRN和MES神经母细胞瘤细胞系.
- 评估了5-hmC沉积,RNA表达和线粒体功能.
- 分析了公开可用的神经母细胞瘤瘤RNA-Seq数据 (GSE62564,GSE73517).
- 开发和应用低氧和MES/低氧基因特征.
- 与T细胞透和使用卡普兰-梅尔分析评估的整体存活率 (OS) 相关联的签名.
主要成果:
- 缺氧诱导了MES细胞中适度的缺氧信号,但在ADRN细胞中显著增加了5-hmC和线粒体功能障碍.
- 低氧的ADRN细胞显示MES特征基因和TNF-α信号通路的表达增加.
- 一个新的MES/低氧特征与T细胞透有很强的相关性.
- 在缺氧瘤中,高MES/缺氧得分与在初级和验证队列中显著改善3年后的生存状况有关.
结论:
- 缺氧驱动ADRN神经母细胞瘤细胞向MES类基因表达特征.
- 识别的MES/低氧特征是神经母细胞瘤的潜在预后生物标志物.
- 在ADRN细胞中缺氧诱导的表型变化可能会影响抗瘤免疫力和患者的存活率.
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