异常的DNA甲基化,表达,以及ABC载体的转录变体的发生
Katja Zappe1, Antonio Kopic1, Alexandra Scheichel1
1Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria.
Cells
|June 10, 2023
概括
异常甲基化ABCA7基因发生在乳腺癌亚型中,但DNA甲基化与ABCA7mRNA水平没有直接相关. 含有intron的转录与化疗后的剪接因子失调有关.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 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:
- 在包括乳腺癌在内的各种癌症中,ABCA7 (ATP绑定磁带亚家族A成员7) 异常表达.
- 研究ABCA7的表观遗传和遗传变化对于理解乳腺癌的发病过程至关重要.
研究的目的:
- 在乳腺癌中识别ABCA7的特定表观遗传,遗传和替代拼接变化.
- 确定这些变化与ABCA7表达水平之间的关联.
主要方法:
- 对来自乳腺癌患者的瘤和邻近组织的分析.
- 定量PCR (qPCR) 检测ABCA7mRNA转录物,包括内含变异物.
- 对CpG部位的DNA甲基化分析.
- 用多克索鲁比和帕克利塔塞尔治疗乳腺癌细胞系.
- 枪支蛋白质组学来评估拼接因子表达.
主要成果:
- 在ABCA7的异构5-intron 5边界的异常CpG甲基化被观察到以分子亚型特定的方式,有表观遗传场癌变的证据.
- 在促进子-外显子1,内显子1和外显子5-内显子5边界的DNA甲基化水平与ABCA7mRNA水平没有相关.
- 识别了含有内的ABCA7mRNA转录,并没有特定于亚型或与DNA甲基化直接相关.
- 化疗治疗改变了ABCA7内水平,与拼接因子的失调有关.
结论:
- 表观遗传变化,特别是ABCA7外显子5-intron 5边界的DNA甲基化,在乳腺癌中显示出分子亚型特异性.
- 存在含有中子的ABCA7转录,其水平通过化疗进行调节,这表明它在替代拼接调节中的作用.
- 这些发现突出了乳腺癌中ABCA7的复杂调节,涉及表观遗传修饰和替代拼接,特别是对治疗剂的反应.
关键词:
在ABC运输器上,ABC运输器ABCA7A7ABCA7A7A7A7A ABCA7A7A ABCA7A7 ABCA7A7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7 ABCA7通过DNA甲基化.替代性拼接是一种替代性的拼接.乳腺癌 乳腺癌 乳腺癌德克索鲁比辛 (doxorubicin) 是一种药物.基因表达的基因表达方式内部保留/改变内部终止基于质谱的猎枪蛋白质组学.帕克利塔克塞尔 (paclitaxel) 是一种药物.
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