School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China.
Microbiol Res. 2024 Jun;283:127704. doi: 10.1016/j.micres.2024.127704. Epub 2024 Mar 24.
Candida albicans is the most leading cause of life-threatening fungal invasive infections, especially for vulvovaginal candidiasis (VVC). Resistance and tolerance to common fungicide has risen great demands on alternative strategies for treating C. albicans infections. In the present study, ferroptosis has been proven to occur in C. albicans by directly exposed to FeSO via induing hallmarks of ferroptosis, including Fe overload burden, ROS eruption and lipid peroxidation. Transcriptomic profile gave the great hints of the possible mechanism for fungal ferroptosis that FeSO disturb pathways associated to ribosome, tyrosine metabolism, triglyceride metabolism and thiamine metabolism, thus mobilizing death-related gene synthesis. Inspired by the results, a FeSO-loaded hydrogel was prepared as an antifungal agent to treat C. albicans infection. This hydrogel exhibited excellent dressing properties and maintained superior antifungal activity by characterization tests. Besides, mice treated by this composite hydrogel displayed excellent therapeutic efficacy. These results highlighted the potential therapeutic use of FeSO as an innovative strategy in treating C. albicans infections by targeting ferroptosis.
白色念珠菌是导致危及生命的真菌感染的最主要原因,尤其是外阴阴道念珠菌病(VVC)。由于对常见抗真菌药物的耐药性和耐受性增加,因此迫切需要替代策略来治疗白色念珠菌感染。在本研究中,通过直接暴露于 FeSO 使白色念珠菌发生铁死亡,通过诱导铁死亡的特征,包括铁过载负担、ROS 爆发和脂质过氧化。转录组谱为真菌铁死亡的可能机制提供了重要提示,FeSO 扰乱了与核糖体、酪氨酸代谢、甘油三酯代谢和硫胺素代谢相关的途径,从而调动了与死亡相关的基因合成。受研究结果的启发,制备了负载 FeSO 的水凝胶作为一种抗真菌剂来治疗白色念珠菌感染。通过特性测试,这种水凝胶表现出优异的敷料性能和保持优异的抗真菌活性。此外,用这种复合水凝胶治疗的小鼠显示出极好的治疗效果。这些结果突出了 FeSO 作为一种通过靶向铁死亡治疗白色念珠菌感染的创新策略的潜在治疗用途。
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