TRIM28调解了Mettl5的无处不在,从而促进了Th2的两极化
Beiping Miao1, Lihua Mo2,3, Shihan Miao1
1Department of Otolaryngology, Head & Neck Surgery, Shenzhen Second People's Hospital and Shenzhen Clinical Medical Research Center for Otolaryngology Diseases, Shenzhen, China.
Frontiers in immunology
|May 20, 2025
概括
在CD4+T细胞中甲基转移酶类5 (Mettl5) 缺乏通过增加Th2极化促进呼吸道过敏. 抑制TRIM28可以恢复Mettl5水平,并抑制过敏.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- Th2极化是气道过敏 (AA) 和免疫系统疾病的核心.
- 免疫细胞中的异常表观遗传状态与免疫疾病有关.
- 研究甲基转移酶样5 (Mettl5) 在CD4+T细胞平衡中的作用至关重要.
研究的目的:
- 检查甲基转移酶样5 (Mettl5) 在调节CD4+T细胞内恒常的作用.
- 了解呼吸道过敏中Th2偏振的表观遗传调节.
主要方法:
- 使用灰尘虫提取物建立了一个呼吸道过敏小鼠模型.
- 通过ChIP和ELISA评估了CD4+T细胞的Gata3基因中的表观遗传标记.
- 在气道CD4+T细胞中评估了Mettl5和TRIM28水平.
主要成果:
- 在CD4+T细胞中Mettl5缺乏引起了自发的Th2极化.
- 在AA小鼠中,Mettl5水平下降,与AA反应负相关.
- 在AA小鼠中TRIM28升高,导致Mettl5无化和降解,影响Gata3转录.
结论:
- CD4+ T 细胞中的低Mettl5水平驱动Th2极化和气道过敏.
- 抑制TRIM28恢复了Mettl5水平,并抑制了实验中的AA.
相关概念视频
T Cell Types and Functions
740
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...
740
TGF - β Signaling Pathway
7.2K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.2K
Receptor Downregulation in MVBs
2.0K
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
2.0K
Master Transcription Regulators
6.8K
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...
6.8K


