A bivalent chromatin state regulates the function of composite transposons

IF 29 1区 生物学 Q1 GENETICS & HEREDITY
Chiara Anania
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引用次数: 0
二价染色质状态调节复合转座子的功能
转座子继续在人类基因组内移动,有时形成称为复合转座子的杂交序列。其中一些元素,如sin - vnr - alu (SVA)元素,与各种染色质状态有关。然而,它们的精确调控活动仍然缺乏特征。为了填补这一空白,Zhou等人进行了全基因组分析,并鉴定出具有不同转录水平的二价染色质状态(H3K9me3和H3K27ac)的SVAs。作者在K562细胞中将转座子报告子结构与全基因组CRISPR筛选相结合,发现了SVAs的染色质调节因子,可以激活或抑制其转录,其中两个通过急性耗尽得到了验证。在功能水平上,这些元件是控制远端基因表达所必需的,类似于增强子的活性。最后,作者探讨了SVA二价在红细胞生成和骨髓生成过程中的相关性,暗示了这些元素在这些谱系的成熟和衰老过程中的作用。进一步的研究应努力探索二价复合转座子在其他转座子家族和细胞系中的作用。原始参考文献:Cell https://doi.org/10.1016/j.cell.2025.07.014 (2025)
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来源期刊
Nature genetics
Nature genetics 生物-遗传学
CiteScore
43.00
自引率
2.60%
发文量
241
审稿时长
3 months
期刊介绍: Nature Genetics publishes the very highest quality research in genetics. It encompasses genetic and functional genomic studies on human and plant traits and on other model organisms. Current emphasis is on the genetic basis for common and complex diseases and on the functional mechanism, architecture and evolution of gene networks, studied by experimental perturbation. Integrative genetic topics comprise, but are not limited to: -Genes in the pathology of human disease -Molecular analysis of simple and complex genetic traits -Cancer genetics -Agricultural genomics -Developmental genetics -Regulatory variation in gene expression -Strategies and technologies for extracting function from genomic data -Pharmacological genomics -Genome evolution
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