相关实验视频
Updated: Feb 13, 2026

07:01
Induction and Testing of Hypoxia in Cell Culture
Published on: August 12, 2011
86.4K
HIF-1α作为单细胞对低氧反应的中央调节剂
Nadia Lampiasi1, Roberta Russo1
1Istituto per la Ricerca e l'Innovazione Biomedica (IRIB), Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy.
Biology
|February 12, 2026
概括
单细胞中的缺氧诱导因子-1α (HIF-1α) 受到氧气,炎症和新陈代谢的调节. 了解其在天生的免疫力中的作用对于治疗炎症性疾病至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子医学是分子医学.
背景情况:
- 缺氧在炎症和缺血组织中普遍存在,作为先天免疫细胞的关键调节者.
- 缺氧诱导因子-1α (HIF-1α) 是缺氧反应的主调节者,受氧,炎症和新陈代谢的影响.
- 单细胞是关键的先天性免疫细胞,能感觉到缺氧,并启动适应性反应.
研究的目的:
- 在急性缺氧期间审查控制HIF-1α稳定,局部化和人类单细胞和单细胞巨细胞功能的机制.
- 为了突出显示单细胞和巨细胞之间HIF-1α调节的差异.
- 讨论HIF-1α活动在单细胞对炎症,组织平衡和疾病的影响.
主要方法:
- 关于单细胞和巨细胞中HIF-1α调节的当前科学文献的综述.
- 对参与HIF-1α稳定和活性的信号通路的分析.
- 整合关于HIF-1α,NF-κB和表观遗传调节器之间的交叉通话知识.
主要成果:
- 急性缺氧触发了HIF-1α的翻译后稳定,涉及和PKC信号,代谢重编程和早期炎症反应.
- 转录激活HIF-1α可能需要额外的炎症或压力信号.
- HIF-1α与NF-κB广泛相互作用,影响细胞因子的产生,细胞迁移和存活.
结论:
- 循环单细胞中HIF-1α调节的机制比巨细胞的理解要少.
- HIF-1α在单细胞内整合缺氧和炎症信号方面发挥着重要作用.
- 表观遗传调节剂有助于缺氧诱导的训练免疫,影响单细胞功能和疾病的发病.
相关概念视频
Regulation of the Unfolded Protein Response
3.1K
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...
3.1K
Hypoxia
2.2K
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
2.2K
The Central Dogma
140.1K
Overview
140.1K
Measures of Central Tendency
21.5K
The "center" of a data set is also a way of describing location. The two most widely used measures of the "center" of the data are the mean (average) and the median. The words "mean" and "average" are often used interchangeably. The substitution of one word for the other is common practice. The technical term is "arithmetic mean" and "average" is technically a center location. However, in practice among non-statisticians,...
21.5K
Regulated Protein Degradation
8.9K
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...
8.9K
Master Transcription Regulators
7.8K
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...
7.8K

