在过敏性鼻炎中,由microRNA-155介导的Apolipoprotein A-I抑制的II组先天性淋巴细胞反应
Yinhui Zeng1, Qingxiang Zeng1, Yueqiang Wen2
1Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, China.
The journal of allergy and clinical immunology. Global
|February 19, 2024
概括
在过敏性鼻炎中,阿波蛋白A-I (Apo-AI) 通过miR-155抑制了2组先天性淋巴细胞 (ILC2) 的增殖和功能. 这一发现为过敏原诱导的呼吸道炎症机制提供了新的见解.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 2组先天性淋巴细胞 (ILC2s) 是2型炎症的关键参与者,分泌TH2细胞因子.
- 脂蛋白AI (Apo-AI) 是一种高密度脂蛋白成分,具有抗炎性质,但其对ILC2s的影响尚不清楚.
研究的目的:
- 研究Apo-AI对ILC2增殖和功能的影响.
- 阐明潜在的分子机制,包括微RNA-155 (miR-155) 的作用.
主要方法:
- 用ELISA和流细胞计测量了过敏性鼻炎患者的Apo-AI和ILC2水平.
- 在体外测试 (三度提米丁合并,ELISA) 评估了Apo-AI和miR-155对ILC2s的影响.
- 用动物模型在体内验证Apo-AI的效果.
主要成果:
- 在过敏性鼻炎患者中发现了升高的Apo-AI表达.
- 通过miR-155,Apo-AI通过miR-155抑制了ILC2的增殖和GATA3和RORα的表达,这是ILC2的关键转录因子.
- 在小鼠中,Apo-AI缺乏会加剧呼吸道炎症,这种效应通过miR-155抑制而逆转.
结论:
- 在过敏性鼻炎中,Apo-AI通过miR-155通路抑制ILC2的增殖和功能.
- 这些发现增强了我们对驱动过敏原诱导的呼吸道炎症机制的理解.
相关概念视频
Experimental RNAi
6.1K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.1K
T Cell Types and Functions
1.0K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.0K
Drugs Used in Lower Respiratory Disorders: Overview
442
Lower respiratory tract disorders present challenges that often require skilled and nuanced approaches for effective management. Common ailments, such as asthma and chronic obstructive pulmonary disease (COPD), have prompted the development of intricate treatment strategies involving bronchodilators and anti-inflammatory drugs, each tailored to ease breathing and revitalize the lungs.
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...
442
RNA Interference
26.0K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
26.0K
Asthma-II: Pathophysiology and Classification
2.7K
Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
2.7K


