相关实验视频

Updated: Jan 18, 2026

Bio-energetics Investigation of Candida albicans Using Real-time Extracellular Flux Analysis

Bio-energetics Investigation of Candida albicans Using Real-time Extracellular Flux Analysis

Published on: March 19, 2019

转录因子Hap2p调节抗氧化应激反应,以维持白虫 (Candida albicans) 中的米可纳抗性

Yulin Qin^1,2,3, Quanzhen Lv³, Hongtao Xu³

¹Institute of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.

|September 12, 2025

概括

转录因子Hap2p对于Candida albicans中醇耐药性至关重要. 删除HAP2通过影响氧化应激和排泄,增加了对miconazole等抗真菌药物的敏感性.

科学领域:

菌类学菌类学是指菌类学.
分子生物学分子生物学
抗微生物耐药性抗微生物耐药性

背景情况:

在 *Candida albicans* 中的亚醇抗真菌耐药性构成了重大的临床挑战.
了解醇耐药机制对于改善治疗策略至关重要.
转录因子是真菌基因表达和适应的关键调节者.

研究的目的:

为了确定涉及到*Candida albicans*中*fluconazole耐药性的潜在目标.
研究转录因子Hap2p在醇耐药性中的作用.

主要方法:

选一个 *Candida albicans* 突变库,其中有 48 个转录因子被删除.
在 *hap2Δ/Δ* 突变体中评估醇敏感性,特别是对米可纳 (MCZ) 的敏感性.
测量细胞内活性氧物种 (ROS) 水平和抗氧化酶表达.
评估线粒体功能,细胞能量供应和排泄表达 (Cdr1p,Mdr1p).

主要成果:

*hap2Δ/Δ*突变体对醇,特别是对米可纳的敏感性显著增加.
米可纳治疗导致 *hap2Δ/Δ* 突变体细胞内ROS升高,这种情况被抗氧化剂逆转.
Hap2p 缺陷降低了 ROS 清除抗氧化酶的表达,损害了氧化应激反应.
此外,Happ2p缺乏也导致线粒体功能受损,以及排泄Cdr1p和Mdr1p的表达减少.

结论:

转录因子Hap2p对于*Candida albicans*中的醇耐药性至关重要.
Hap2p调节氧化应激反应,线粒体功能和流出介导的抗性.
针对Hap2p可能提供一种新的策略,以克服*C. albicans*的临床醇耐药性.

关键词:

在Candida albicans中使用.这就是Hap2p.抗氧化应激是一种抗氧化应激.亚醇易感性亚醇易感性线粒体功能线粒体功能

更多相关视频

Small-Scale Plasma Membrane Preparation for the Analysis of Candida albicans Cdr1-mGFPHis

Small-Scale Plasma Membrane Preparation for the Analysis of Candida albicans Cdr1-mGFPHis

Published on: June 13, 2021

Measurements of Physiological Stress Responses in C. Elegans

Measurements of Physiological Stress Responses in C. Elegans

Published on: May 21, 2020

相关概念视频

Master Transcription Regulators

Master Transcription Regulators

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...

Other Stress Responses in Bacteria

Other Stress Responses in Bacteria

Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...

Abnormal Proliferation

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...