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不同的转录因子网络控制中性粒细胞驱动的炎症。

Distinct transcription factor networks control neutrophil-driven inflammation.

机构信息

Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.

Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain.

出版信息

Nat Immunol. 2021 Sep;22(9):1093-1106. doi: 10.1038/s41590-021-00968-4. Epub 2021 Jul 19.


DOI:10.1038/s41590-021-00968-4
PMID:34282331
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7611586/
Abstract

Neutrophils display distinct gene expression patters depending on their developmental stage, activation state and tissue microenvironment. To determine the transcription factor networks that shape these responses in a mouse model, we integrated transcriptional and chromatin analyses of neutrophils during acute inflammation. We showed active chromatin remodeling at two transition stages: bone marrow-to-blood and blood-to-tissue. Analysis of differentially accessible regions revealed distinct sets of putative transcription factors associated with control of neutrophil inflammatory responses. Using ex vivo and in vivo approaches, we confirmed that RUNX1 and KLF6 modulate neutrophil maturation, whereas RELB, IRF5 and JUNB drive neutrophil effector responses and RFX2 and RELB promote survival. Interfering with neutrophil activation by targeting one of these factors, JUNB, reduced pathological inflammation in a mouse model of myocardial infarction. Therefore, our study represents a blueprint for transcriptional control of neutrophil responses in acute inflammation and opens possibilities for stage-specific therapeutic modulation of neutrophil function in disease.

摘要

中性粒细胞根据其发育阶段、激活状态和组织微环境表现出不同的基因表达模式。为了确定在小鼠模型中塑造这些反应的转录因子网络,我们整合了急性炎症期间中性粒细胞的转录和染色质分析。我们显示了两个过渡阶段的活性染色质重塑:骨髓到血液和血液到组织。差异可及区域的分析揭示了与控制中性粒细胞炎症反应相关的不同转录因子集。通过体外和体内方法,我们证实 RUNX1 和 KLF6 调节中性粒细胞成熟,而 RELB、IRF5 和 JUNB 驱动中性粒细胞效应反应,RFX2 和 RELB 促进存活。通过靶向这些因子之一 JUNB 来干扰中性粒细胞的激活,可减少心肌梗死小鼠模型中的病理性炎症。因此,我们的研究代表了急性炎症中中性粒细胞反应的转录控制蓝图,并为疾病中性粒细胞功能的特定阶段的治疗调节提供了可能性。

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