相关实验视频
Updated: Jun 11, 2025

07:50
Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
5.5K
全基因组DNA甲基化简介揭示了莫亚莫亚病的低甲基化变异性
Kikutaro Tokairin1,2, Masaki Ito1,2, Alex G Lee3
1Department of Neurosurgery, Stanford University School of Medicine, 1201 Welch Road, Stanford, CA, 94305, USA.
Translational stroke research
|October 2, 2024
概括
莫亚莫亚病 (MMD) 与其他疾病不同,显示出异常低的DNA甲基化变异性. 这种减少的表观遗传适应性可能会损害患者的健康.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 脑血管生物学 脑血管生物学
- 基因组学就是基因组学.
背景情况:
- 莫亚莫亚病 (MMD) 是一种与中风风险相关的慢性脑血管疾病.
- 基因与环境的相互作用与MMD病变发生有关.
- 表观遗传修饰,特别是DNA甲基化,在MMD中基本未被探索.
研究的目的:
- 为了研究MMD中全基因组DNA甲基化模式.
- 为了在不同的队列中比较MMD患者和健康对照之间的甲基化变异性.
- 确定受MMD改变DNA甲基化影响的生物途径.
主要方法:
- 使用Illumina 850K甲基化EPIC珠芯片进行全基因组DNA甲基化分析.
- 研究包括两个种族不同的成年女性队列和两性外部验证队列.
- 在MMD患者和对照人群之间的差异甲基化变异性分析.
主要成果:
- 与健康对照人群相比,在MMD患者中观察到惊人的低DNA甲基化变异性.
- 在亚洲队列中的2845个探针中证实了减少的甲基化变异性.
- 差异变量探头被丰富了调节甲基化,转录,DNA修复和细胞过程的基因.
结论:
- 这项研究报告了在任何疾病中首次观察到DNA甲基化变异性降低,特别是在莫亚莫亚病中.
- 这种表观遗传特征可能会损害MMD患者适应环境压力因素的能力,影响血管平衡.
- 这些发现为MMD机制和潜在的治疗点提供了新的见解.
相关概念视频
Epigenetic Regulation
30.9K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
30.9K
Genomic Imprinting and Inheritance
34.1K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.1K

