BSC2 enhances cell resistance to AmB by inhibiting oxidative damage in Saccharomyces cerevisiae

	BSC2 enhances cell resistance to AmB by inhibiting oxidative damage in Saccharomyces cerevisiae
	Kong, Yingying; Wang, Qiao; Cao, Fangqi; Zhang, Xiaoyu; Fang, Zhijia; Shi, Ping; Wang, Handong; Shen, Yuhu; Huang, Zhiwei
刊名	FREE RADICAL RESEARCH
	2020
卷号	54 期号:4
关键词	Amphotericin B cell resistance BSC2 oxidative stress Saccharomyces cerevisiae
英文摘要	Amphotericin B has been the gold standard for the treatment of invasive mycosis for many years. Its resistance mechanisms are reported to be mainly related to the decrease of ergosterol content or the changes of cell wall. Previous study has shown that Saccharomyces cerevisiae strain lack of BSC2 was sensitive significantly to Amphotericin B. In the present study, the role of BSC2 on Amphotericin B resistance were investigated. We found that BSC2 enhanced the resistance of yeast cells to Amphotericin B, which was not related to cellular ergosterol content. BSC2 can maintain the permeability of mitochondrial membrane and cell membrane integrity by inhibiting the accumulation of intercellular reactive oxygen species and alleviating the production of lipid peroxidation and superoxide radical. These alterations were attributed to the enhancement of the activities of superoxide dismutase, catalase and glutathione peroxidase, and the increased glutathione content. Taken together, BSC2 inhibits oxidative damage induced by Amphotericin B through increasing activities of antioxidant enzymes and levels of GSH to alleviate the accumulation of reactive oxygen species, lipid peroxidation and superoxide radical, resulting in the maintenance of mitochondrial membrane potential and cell membrane integrity. However, Amphotericin B resistance mediated by BSC2 is independent of Yap1p, GSH1 and Hog1p. The results demonstrate for the first time that BSC2 enhances cell resistance to Amphotericin B by inhibiting oxidative damage in yeast. Our findings improve current understanding of the mechanism of Amphotericin B resistance and provide potential strategy for reducing Amphotericin B resistance.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/60354]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Kong, Yingying,Wang, Qiao,Cao, Fangqi,et al. BSC2 enhances cell resistance to AmB by inhibiting oxidative damage in Saccharomyces cerevisiae[J]. FREE RADICAL RESEARCH,2020,54(4).
APA	Kong, Yingying.,Wang, Qiao.,Cao, Fangqi.,Zhang, Xiaoyu.,Fang, Zhijia.,...&Huang, Zhiwei.(2020).BSC2 enhances cell resistance to AmB by inhibiting oxidative damage in Saccharomyces cerevisiae.FREE RADICAL RESEARCH,54(4).
MLA	Kong, Yingying,et al."BSC2 enhances cell resistance to AmB by inhibiting oxidative damage in Saccharomyces cerevisiae".FREE RADICAL RESEARCH 54.4(2020).