Af-CUT&Tag:一种敏感且无抗体的染色体分析方法,使用基因编码的标签和与Tn5合的高亲和度结合剂
Xindong Wang1, Xusheng Deng1, Lu Qiu1
1State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Engineering Research Centre of Molecular Diagnostics of the Ministry of Education, School of Life Sciences, National Institute for Data Science in Health and Medicine Engineering, Faculty of Medicine and Life Sciences, Shenzhen Research Institute of Xiamen University, Xiamen University, Xiamen, Fujian, China.
Nature communications
|January 17, 2026
概括
一种新的无抗体染色体分析方法,Af-CUT&Tag,为研究基因调节提供了高特异性和灵敏性. 这种技术促进了发育,疾病和肝脏再生方面的研究.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
背景情况:
- 传统的染色体分析方法依赖于抗体,这些抗体通常存在有限的可用性和可变的性能.
- 这些局限性阻碍了对染色质可访问性和基因调节的准确和敏感分析.
研究的目的:
- 开发一种新的,无抗体的染色体分析技术,以克服现有方法的局限性.
- 为了能够在各种生物环境中对染色质动态进行高分辨率分析,包括肝脏再生.
主要方法:
- 介绍了Af-CUT&Tag,这是一个CRISPR集成的标签 (HiBiT/ALFA标签) 系统,通过工程结合剂 (LgBiT/NbALFA) 识别,这些结合剂与Tn5转化酶融合.
- 应用Af-CUT&Tag用于细胞系,体积组织和单核中的染色体概况 (scAf-CUT&Tag).
- 研究Hippo效应物 (YAP1/TAZ) 以及它们在肝脏再生,脂质代谢和血红素清除中的作用.
主要成果:
- Af-CUT&Tag表现出强大的特异性和灵敏度,只需要500个细胞.
- 与基于抗体的方法相比,实现了高质量的染色质谱,改善了信号噪声比和图书馆质量.
- 在肝脏再生过程中揭示了动态色素重塑,包括YAP1/TAZ介导的脂质代谢调节和血红素清除基因 (Lpin1,Fasn,Hpx,Trf).
- 确定了miR-122作为肝脏再生过程中的关键调节剂.
结论:
- Af-CUT&Tag 是一种多功能且强大的无抗体工具,用于染色体分析,克服了传统技术的局限性.
- 该方法提供了大量和单细胞分辨率的高质量数据,促进了对基因调节的研究.
- Af-CUT&Tag提供了对肝脏再生机制的新见解,突出了YAP1/TAZ和miR-122.的作用.
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