柏柏林破坏了高亲和度铁运输系统,扭转了Candida albicans中的可纳耐药性
Daifan Yue1, Dongming Zheng2, Linlan Yang1
1College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
Microbial pathogenesis
|February 10, 2025
概括
柏柏林 (BBR) 通过破坏它们的铁获取途径来对抗耐药真菌,导致线粒体功能受损和细胞死亡. 这为治疗侵入性真菌感染提供了潜在的新策略.
科学领域:
- 菌类学 菌类学是指菌类学.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 侵袭性真菌感染,主要是Candida albicans,由于高死亡率和有限的治疗选择,对重症患者构成重大威胁.
- 增加抗真菌药物耐药性需要开发新的治疗策略.
研究的目的:
- 调查贝贝林 (BBR) 对耐药真菌的抗真菌机制.
- 探索BBR作为侵袭性真菌感染治疗剂的潜力.
主要方法:
- 转录组分析以确定受BBR.影响的关键途径.
- 实验验证BBR对获得铁,细胞粘附和生物膜形成的影响.
- 评估细胞内铁含量,铁还原酶活性和线粒体功能.
主要成果:
- 柏柏林 (BBR) 抑制了抗醇基因的表达,减少了真菌细胞的粘附,并破坏了生物膜的形成.
- 转录组分析显示,BBR破坏了真菌中的铁获取途径.
- BBR治疗导致细胞内铁离子含量降低,铁还原酶活性减弱,以及低调高亲和铁运输基因,包括Ftr1.1.
- 由BBR引起的铁缺乏会损害线粒体功能,最终导致真菌细胞死亡.
结论:
- 柏柏林 (BBR) 通过向高亲和度铁获取途径,有效抑制耐药真菌.
- 破坏铁的吸收和随后的线粒体功能障碍是BBR抗真菌活性的关键机制.
- 在治疗侵入性真菌感染和克服耐药性方面,BBR显示出临床应用的巨大潜力.
相关概念视频
01:29Fungal Group Zygomycota
2.1K
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
2.1K
01:28Biodeterioration
86
Biodeterioration refers to the unwanted alteration of materials caused by microorganisms—especially fungi—which damage both organic substrates (paper, wood, textiles) and inorganic ones (stone, plaster, glass). Unlike abiotic decay, biodeterioration results from biological activity that produces physical disruption and chemical degradation.Physical deterioration occurs as fungal hyphae penetrate pores, cracks, and surface irregularities. Hyphal turgor pressure, thigmotropic growth...
86
01:15Antifungal Agents
119
Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to...
119