STEMIN转录因子驱动选择性染色体重塑,用于在中重新编程时在松散的染色体内激活基因,physcomitrium patens
Ruan Morné de Villiers1,2, Gergo Palfalvi1,2,3, Akinori Kanai4
1Division of Evolutionary Biology, National Institute for Basic Biology, Okazaki, 444-8585, Japan.
The Plant journal : for cell and molecular biology
|August 1, 2025
概括
伤害触发了陆地植物通过放松色素来形成干细胞. 然后,特定的转录因子完善了这一过程,使细胞重新编程为干细胞发育.
科学领域:
- 植物生物学 植物生物学
- 细胞的可塑性 细胞的可塑性
- 染色体的动态 染色体的动态
背景情况:
- 陆地植物可以将分化细胞重新编程成干细胞.
- 染色体重塑是细胞重编程的关键,但其与基因表达的相互作用尚未完全理解.
- 在Physcomitrium patens中,受伤诱导叶细胞通过STEMIN转录因子激活来重新编程成干细胞.
研究的目的:
- 在STEMIN介导的重编程过程中,研究基因表达和染色质动态之间的相互作用.
- 了解陆地植物细胞可塑性的基础分子机制.
主要方法:
- 多模式单核RNA和ATAC测序. 多模式单核RNA和ATAC测序.
- 分析了来自各种Physcomitrium patens组织的20883个单核细胞 (体质细胞,质子细胞,切碎的叶子).
- 识别了11种不同的细胞类型,包括重新编程叶子细胞.
主要成果:
- 重编程的叶子细胞显示了部分放松的染色质结构.
- STEMIN转录因子特别增加了干细胞形成的关键基因组部位的染色质可访问性.
- 伤害引发了广泛的染色体放松,创造了一个允许重新编程的状态.
结论:
- 受伤诱导的染色体放松建立了一个宽容的细胞环境.
- STEMIN转录因子精确调节染色体的可访问性,指导重新编程到干细胞的命运.
- 这项研究阐明了染色质动态和转录因子在植物细胞重编程中的协调作用.
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