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组蛋白伴侣FACT:染色质结构完整性的守护者。

The histone chaperone FACT: a guardian of chromatin structure integrity.

作者信息

Jeronimo Célia, Robert François

机构信息

Institut de recherches cliniques de Montréal, Montréal, Québec, Canada.

Département de Médecine, Faculté de Médecine, Université de Montréal, Montréal, Québec, Canada.

出版信息

Transcription. 2022 Feb-Jun;13(1-3):16-38. doi: 10.1080/21541264.2022.2069995. Epub 2022 Apr 29.

Abstract

The identification of FACT as a histone chaperone enabling transcription through chromatin in vitro has strongly shaped how its roles are envisioned. However, FACT has been implicated in essentially all aspects of chromatin biology, from transcription to DNA replication, DNA repair, and chromosome segregation. In this review, we focus on recent literature describing the role and mechanisms of FACT during transcription. We highlight the prime importance of FACT in preserving chromatin integrity during transcription and challenge its role as an elongation factor. We also review evidence for FACT's role as a cell-type/gene-specific regulator of gene expression and briefly summarize current efforts at using FACT inhibition as an anti-cancer strategy.

摘要

FACT作为一种组蛋白伴侣在体外能够促进转录通过染色质,这一发现极大地影响了人们对其功能的认知。然而,FACT几乎涉及染色质生物学的所有方面,从转录到DNA复制、DNA修复以及染色体分离。在本综述中,我们聚焦于近期描述FACT在转录过程中的作用和机制的文献。我们强调了FACT在转录过程中维持染色质完整性的首要重要性,并对其作为延伸因子的作用提出质疑。我们还回顾了FACT作为基因表达的细胞类型/基因特异性调节因子的证据,并简要总结了目前将抑制FACT作为抗癌策略的研究进展。

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本文引用的文献

1
FACT subunit SUPT16H associates with BRD4 and contributes to silencing of interferon signaling.
Nucleic Acids Res. 2022 Aug 26;50(15):8700-8718. doi: 10.1093/nar/gkac645.
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The chromatin remodeler Ino80 mediates RNAPII pausing site determination.
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FACT is recruited to the +1 nucleosome of transcribed genes and spreads in a Chd1-dependent manner.
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