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m6 一个表皮转录组分析揭示了差异甲基化转录,驱动膀癌早期化学抵抗
Emmanuelle Hodara1, Aubree Mades1, Lisa Swartz1
1Division of Medical Oncology, Department of Medicine, Keck School of Medicine of USC and Norris Comprehensive Cancer Center, Los Angeles, CA 90033, USA.
NAR cancer
|November 29, 2023
概括
在膀癌中,N-Methyladenosine (m6A) RNA的修改通过上调SLC7A11.11来驱动化学抵抗. 这种表体转录性可塑性为克服抗药性提供了潜在的治疗点.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- N-Methyladenosine (m6A) RNA的修改对于调节基因表达,细胞分化和细胞命运至关重要.
- 对于m6A修饰在抗化学药的发展中的作用仍然在很大程度上未被探索.
研究的目的:
- 研究m6ARNA修饰在膀癌中转化为化学抵抗的作用.
- 为了确定与西斯普拉丁耐药性相关的特定m6A修饰的转录.
主要方法:
- 使用甲基RNA免疫沉,然后测序 (MeRIP-seq) 和RNA测序来比较对西斯普拉丁敏感和耐药膀癌细胞.
- 用临床和功能数据库工具来确定基因优先级.
- 候选人验证涉及定量聚合酶连锁反应 (qPCR) 和MeRIP-PCR.
主要成果:
- 抗西斯普拉丁细胞显示SLC7A11转录的m6A甲基化减少,YTHDF3结合减少,RNA和蛋白质水平增加.
- 提高SLC7A11的调节导致铁亡的减少和细胞存活的增强.
- 在敏感细胞和有机体中短期暴露于思丁,诱导了类似的SLC7A11上调,反映了公共癌症存活数据库中的发现.
结论:
- 由m6A修饰介导的表体转录性可塑性是膀癌中快速化学抵抗发展的机制.
- SLC7A11是这种化学抵抗的关键媒介.
- 准表达体转录机制是对抗耐化学性膀癌的潜在治疗策略.
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