通过利用表观遗传沉默来工程诱导细胞命运过渡
Oscar A Campos1,2, Alessandro Migliara1, Satoshi Toda1,3
1Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158, USA.
bioRxiv : the preprint server for biology
|November 19, 2025
概括
科学家们设计了合成表观遗传电路,以控制细胞命运过渡. 这些电路使用表观遗传沉默和激活来创建稳定,自我维持的基因表达变化,使细胞协调决策.
科学领域:
- 合成生物学 合成生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 细胞工程 细胞工程
背景情况:
- 细胞与细胞之间的沟通在发育过程中驱动细胞命运的转变.
- 表观遗传基因调节维持了这些细胞命运决定.
- 工程稳定细胞命运变化需要精确控制基因表达.
研究的目的:
- 开发合成电路,利用内源性表观遗传机制,实现稳定的基因表达变化.
- 创建输入控制的表观遗传开关,以诱导目标基因的自持性沉默或激活.
- 设计用于协调多细胞命运决定的系统.
主要方法:
- 利用内生表观遗传沉默机制.
- 设计合成的Notch受体来控制染色体调节器KRAB和Dnmt3L.
- 构建细胞命运选择的组合输入控制电路.
- 逆转静音开关以实现持续的基因激活.
主要成果:
- 开发了输入控制的表观遗传开关,用于自我维持的基因沉默.
- 证明了指导特定细胞命运选择的组合输入.
- 展示了用于持续基因激活的开关的反转.
- 设计了一个表观遗传记忆开关,驱动稳定的形态命运变化,过渡后信号.
结论:
- 合成表观遗传电路可以诱导稳定,可遗传的基因表达变化.
- 这些电路使得输入控制,自我维持的细胞命运决定成为可能.
- 开发的表观遗传记忆开关模仿了细胞分裂的发育稳定性.
- 这项工作推进了细胞群的工程,以协调命运决策.
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