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在人类之间,染色质状态的广泛变化

Maya Kasowski¹, Sofia Kyriazopoulou-Panagiotopoulou, Fabian Grubert

¹Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA.

Science (New York, N.Y.)

|October 19, 2013

概括

人类调节区域显示染色质状态的显著变化,影响疾病风险. 这项研究揭示了遗传差异如何影响这些动态染色体格局和基因调节在不同的人口.

科学领域:

基因组学就是基因组学.
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
人口遗传学人口遗传学

背景情况:

大多数与疾病相关的遗传变异是非编码的,这涉及疾病易感性的调节区域.
了解基因调节元件的变异对于破译疾病倾向至关重要.

研究的目的:

在不同的人群中调查染色质状态的变化.
探索染色体变异性,遗传变异性和基因调节之间的关系.

主要方法:

分析了来自19个个体的淋巴细胞细胞系中的五种基因组修饰,凝聚素和CTCF.
对不同个体的染色质状态和增强剂活性进行比较.
对遗传遗传和与人口差异相关性的评估.

主要成果:

监管区域染色体状态的广泛变化观察到,经常在活跃状态和抑制状态之间切换.
增强剂活性显示出显著的个体间多样性,而基因表达仍然相对稳定.
染色体变异性表明遗传遗传,与遗传变异相关,并与转录因子结合动机破坏有关.

结论:

人类染色体在调节区域的状态是高度可变的,并受到遗传学的影响.
这种变异性有助于理解人类遗传多样性和疾病相关性.
这些发现提供了对人类表观基因组的动态性质的见解.

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