ciRS-7的表达在人类腺癌细胞中的癌细胞中受到表观遗传调节
Thea P Paasch1, Morten T Jarlstad Olesen1, Juan L García-Rodríguez1
1Department of Biomedicine, Aarhus University, Aarhus, Denmark.
PLoS genetics
|June 2, 2025
概括
循环RNAciRS-7主要在瘤微环境中发现,而不是癌细胞,在大多数腺癌中. 它的表达通过DNA甲基化和基因素乙化进行表观遗传调节.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 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:
- 循环RNAs (circRNAs) 是参与基因调节的非编码RNA,通常通过microRNA结合.
- 该circRNA ciRS-7 (CDR1as) 菌miR-7,一种已知的瘤抑制剂,表明它在癌症发育中起作用.
研究的目的:
- 为了研究ciRS-7在各种腺癌中的空间表达.
- 探索调节癌症中ciRS-7表达的表观遗传机制.
主要方法:
- 在患者样本和细胞系中分析ciRS-7表达,使用RT-qPCR,in situ杂交和纳米链.
- 通过双硫酸盐测序,SMART-MSP和染色体免疫沉进行表观遗传学分析.
- 使用表观遗传修饰抑制剂的功能研究.
主要成果:
- 在大多数腺癌 (乳腺癌除外) 中,ciRS-7主要表达在瘤微环境 (TME),而不是癌细胞中.
- 在癌症细胞系中,表达在很大程度上不存在.
- 鉴定出DNA甲基化和H3K9乙化是ciRS-7表达的关键表观遗传调节剂.
结论:
- ciRS-7主要局限于腺癌中TME.
- 表观遗传修饰,特别是DNA甲基化和H3K9乙化,控制ciRS-7的表达.
- 这些发现强调了ciRS-7在癌症中的特异性TME作用和表观遗传调节.
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