The Interplay Between Chromatin Architecture and Lineage-Specific Transcription Factors and the Regulation of Rag Gene Expression.

The Interplay Between Chromatin Architecture and Lineage-Specific Transcription Factors and the Regulation of Rag Gene Expression.
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DOI:
10.3389/fimmu.2021.659761
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发表时间:
2021
影响因子:
7.3
通讯作者:
Miyazaki M
Miyazaki M
中科院分区:
医学2区
文献类型:
--
作者:
Miyazaki K;Miyazaki M

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细胞类型特异性基因表达是通过谱系特异性转录因子(TF)和染色质结构(如拓扑相关结构域(TADs))之间的相互作用以及增强子-启动子相互作用来驱动的。为了阐明细胞命运决定和细胞类型特异性功能的分子机制,重要的是要了解染色质结构和TF之间的相互作用。在增强子中,超级增强子(SE)在建立细胞身份中起关键作用。适应性免疫依赖于RAG介导的抗原识别受体的组装。因此,Rag 1和Rag 2(Rag 1/2)基因的调节是适应性淋巴谱系定型的标志。在这里,我们回顾了目前的知识,三维基因组组织,SE的形成,Rag 1/2基因调控过程中B细胞和T细胞分化。
Cell type-specific gene expression is driven through the interplay between lineage-specific transcription factors (TFs) and the chromatin architecture, such as topologically associating domains (TADs), and enhancer-promoter interactions. To elucidate the molecular mechanisms of the cell fate decisions and cell type-specific functions, it is important to understand the interplay between chromatin architectures and TFs. Among enhancers, super-enhancers (SEs) play key roles in establishing cell identity. Adaptive immunity depends on the RAG-mediated assembly of antigen recognition receptors. Hence, regulation of the Rag1 and Rag2 (Rag1/2) genes is a hallmark of adaptive lymphoid lineage commitment. Here, we review the current knowledge of 3D genome organization, SE formation, and Rag1/2 gene regulation during B cell and T cell differentiation.
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