Roles of Cch1 and Mid1 in Morphogenesis, Oxidative Stress Response and Virulence in Candida albicans

Roles of Cch1 and Mid1 in Morphogenesis, Oxidative Stress Response and Virulence in Candida albicans
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Cch1 和 Mid1 在白色念珠菌形态发生、氧化应激反应和毒力中的作用

DOI:
10.1007/s11046-012-9569-0
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发表时间:
2012-08
期刊:
影响因子:
5.5
通讯作者:
Li, Mingchun
Li, Mingchun
中科院分区:
生物学3区
文献类型:
--
作者:
Xu, Ning;Ding, Xiaohui;Xing, Laijun;Li, Mingchun

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Ca 2+通道Cch 1及其亚基Mid 1被认为是负责介导Ca 2+内流的蛋白复合物,其通常被真菌细胞用来维持细胞存活。白念珠菌的形态转换能力和应激反应能力与其致病性密切相关。Cch 1和Mid 1活性分别是新型隐球菌和麦角菌毒力所必需的。探讨Cch 1和Mid 1是否也参与了C.为了研究CCH 1和MID 1的功能,我们构建了cch 1 Δ/Δ和mid 1 Δ/Δ突变株。虽然这两个突变体都表现出酵母到菌丝的转化能力,但它们在菌丝维持和侵入性生长方面存在缺陷。有趣的是,C.白色念珠菌导致明显的氧化应激反应缺陷表型。此外,在小鼠模型中,突变体的毒力降低。结果表明,Cch 1和Mid 1活性与C.白念珠菌,并可能提供一个新的抗真菌靶点。
Ca2+ channel Cch1, and its subunit Mid1, has been suggested as the protein complex responsible for mediating Ca2+ influx, which is often employed by fungal cells to maintain cell survival. The abilities of morphological switch and response to stress conditions are closely related to pathogenicity in Candida albicans. Cch1 and Mid1 activity are required for virulence of Cryptococcus neoformans and Claviceps purpurea, respectively. To investigate whether Cch1 and Mid1 also play a role in the virulence of C. albicans, we constructed cch1Δ/Δ and mid1Δ/Δ mutant strains for functional analysis of CCH1 and MID1. Although both of the mutants displayed the ability of yeast-to-hypha transition, they were defective in hyphae maintenance and invasive growth. Interestingly, deletion of CCH1 or MID1 in C. albicans led to an obvious defect phenotype in oxidative stress response. Moreover, the virulence of the mutants was reduced in a mouse model. Our results demonstrated that Cch1 and Mid1 activity are related to the virulence of C. albicans and may provide a new antifungal target.
DOI: 10.1016/s0076-6879(02)53037-8
发表时间: 2002
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DOI: --
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期刊: --
影响因子: --
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白色念珠菌的菌丝取向受钙依赖性机制调节。
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发表时间: 2007-02-20
期刊: CURRENT BIOLOGY
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