Feoktistov A V, Georgieva S G, Soshnikova N V
Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russia.
Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia.
Mol Biol (Mosk). 2022 Mar-Apr;56(2):244-258. doi: 10.31857/S0026898422020070.
The process of inflammation is the body's natural defense response to the penetration of foreign substances and molecules from the outside. Many proteins, signaling cascades, and transcription factors are involved in the activation of inflammation genes. Their coordinated activity leads to a change in the expression of proinflammatory genes. The chromatin state of genes responding to the inflammation stimulus is the main factor determining the binding of transcriptional activators to the gene regulatory elements and a key mechanism in the induction of inflammatory genes. The rapid change in the state of chromatin, the creation of an open structure and the removal of the "nucleosome barrier" facilitates the binding of transcription factors and the initiation of transcription. This process is realized by attracting complexes to the gene that modify and remodel chromatin. One of the most important complexes restructuring the chromatin structure during gene activation is the SWI/SNF multisubunit complex. SWI/SNF regulates the expression of inflammation genes through interaction with transcription factors, including factors of the NF-κВ signaling pathway. The variability of the subunits of this complex determines the specificity of its binding to the chromatin and various transcriptional activators. This review considers the role of SWI/SNF in the regulation of inflammation genes, describes its interactions with chromatin, and the molecular mechanisms of its recruitment to the promoters.
炎症过程是机体对外来物质和分子侵入的自然防御反应。许多蛋白质、信号级联反应和转录因子参与炎症基因的激活。它们的协同活动导致促炎基因表达的改变。对炎症刺激作出反应的基因的染色质状态是决定转录激活因子与基因调控元件结合的主要因素,也是诱导炎症基因的关键机制。染色质状态的快速改变、开放结构的形成以及“核小体屏障”的去除有利于转录因子的结合和转录的起始。这个过程是通过吸引修饰和重塑染色质的复合物到基因上来实现的。在基因激活过程中重组染色质结构的最重要复合物之一是SWI/SNF多亚基复合物。SWI/SNF通过与转录因子相互作用来调节炎症基因的表达,这些转录因子包括NF-κB信号通路的因子。该复合物亚基的变异性决定了其与染色质和各种转录激活因子结合的特异性。本综述探讨了SWI/SNF在炎症基因调控中的作用,描述了其与染色质的相互作用以及其被招募到启动子的分子机制。