干扰素Epsilon在粘膜上皮的表达受到Elf3的调节
Ka Yee Fung1,2, Eveline D de Geus1,2, Le Ying1,2
1Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.
Molecular and cellular biology
|July 8, 2024
概括
干扰素epsilon (IFNε),对粘膜免疫至关重要,由转录因子Elf3.3调节. 这一发现解释了IFNε如何保护生殖道和其他上皮组织免受感染.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 皮质生物学 皮质生物学
背景情况:
- 干扰素epsilon (IFNε) 是一种I型干扰素,在生殖道上皮上具有构成性表达.
- 了解IFNε调节对于其在粘膜防御感染中的作用至关重要.
研究的目的:
- 研究IFNε表达的转录调节.
- 为了确定参与控制表皮组织中的IFNε的转录因子.
主要方法:
- 计算促进器分析用于预测转录因子结合部位.
- 发起人报告员试图评估Elf3的监管作用.
- Elf3进行了淘汰实验,以评估其对IFNε表达的影响.
- 染色体免疫沉 (ChIP) 证实Elf3直接与IFNε促进体结合.
主要成果:
- 计算分析确定了IFNε促进体中的ETS家族转录因子结合位.
- Elf3,一种表皮受限的ETS因子,被确定为IFNε的关键调节者.
- Elf3直接与IFNε促进体结合,并驱动其表达.
- 击倒Elf3显著降低了IFNε表达水平.
结论:
- Elf3 是IFNε表达在上皮组织 (包括子宫) 中的关键调节者.
- 通过ELF3介导的IFNε表达有助于保护性粘膜免疫.
- 这种机制对于抵抗子宫,肺和肠道感染很重要.
相关概念视频
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.2K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.2K
Regulation of the Unfolded Protein Response
2.4K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.4K
Master Transcription Regulators
6.9K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.9K


