BRD3 PROTAC降解剂准H3K18ac,以缓解视网膜微质驱动的脑膜炎
Zhi Zhang1,2,3, Tianlong Lan4, Yongbo Liu4
1Chongqing Key Laboratory of Ophthalmology, Chongqing Eye Institute, Chongqing Branch of National Clinical Research Center for Ocular Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
iScience
|January 26, 2026
概括
蛋白质溶解向金氏体 (PROTAC) D072通过降解原蛋白和外端 (BET) 蛋白 BRD3.3 来降低眼内炎症. 这种有针对性的方法抑制了亲炎性微质,为自身免疫性脑膜炎提供了潜在的新疗法.
科学领域:
- 眼科医生 眼科 眼科
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 尿道炎是一种危及视力的眼内炎症.
- 预炎性免疫反应,特别是视网膜微质细胞的免疫反应,是脑膜炎的关键驱动因素.
- 蛋白质溶解向化马体 (PROTAC) 的治疗潜力在膜炎中向原蛋白和外端蛋白 (BET) 的治疗潜力在很大程度上尚未探索.
研究的目的:
- 为了研究PROTAC D072对实验性自身免疫性脑膜炎的治疗作用.
- 确定D072在抑制炎症方面的特定标和作用机制.
主要方法:
- 在脑膜炎的小鼠模型中使用PROTAC D072.
- 评估眼内炎症和微质激活.
- 使用生化分析验证药物标.
- 涉及基因素修饰 (H3K18ac) 和基因占用分析 (CUT&Tag) 的机制研究.
主要成果:
- 在体内和体外,PROTAC D072显著降低了眼内炎症,并抑制了益炎性微质细胞.
- D072 特别降解BRD3,对BRD2和BRD4的影响最小.
- BRD3 降解导致H3K18ac水平降低和基因表达特征改变.
- 发现基因组脱乙酶 (HDACs) 在BRD3降解后部分调节H3K18ac水平.
结论:
- 普罗塔克D072是一种特定的BRD3降解剂,有效抑制自身免疫性脑膜炎的前炎性微质细胞.
- 针对BRD3的向降解是一个有前途的治疗策略,用于治疗脑膜炎.
相关概念视频
02:58Regulated Protein Degradation
8.8K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.8K
02:58Regulated Protein Degradation
3.1K
3.1K
02:11Proteins: From Genes to Degradation
14.3K
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
Transcription is the synthesis of RNA...
14.3K
02:11Proteins: From Genes to Degradation
4.3K
4.3K
01:27ATP Driven Pumps I: An Overview
9.8K
ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and...
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and...
9.8K
01:23Role of Matrix Metalloproteases in Degradation of ECM
3.3K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
3.3K