Contribution of NADH oxidase to oxidative stress tolerance and virulence of Streptococcus suis serotype 2

Contribution of NADH oxidase to oxidative stress tolerance and virulence of Streptococcus suis serotype 2
复制标题

NADH 氧化酶对猪链球菌血清型 2 氧化应激耐受性和毒力的贡献

DOI:
10.1080/21505594.2016.1201256
复制
发表时间:
2017-01
期刊:
影响因子:
5.2
通讯作者:
Bei Weicheng
Bei Weicheng
中科院分区:
生物学2区
文献类型:
--
作者:
Zheng Chengkun;Ren Sujing;Xu Jiali;Zhao Xigong;Shi Guolin;Wu Jianping;Li Jinquan;Chen Huanchun;Bei Weicheng

文献摘要

参考文献

相似文献

摘要猪链球菌是引起严重感染的主要猪源和人畜共患病病原体。以前,我们在S.证明SpxA1影响氧化应激耐受性和毒力。然而,SpxA1功能背后的机制仍不清楚。在这项研究中,我们针对4个在spxA1突变体中表达水平显著降低的基因,以确定它们在适应氧化应激和毒力潜力中的特定作用。Δnox菌株在氧化胁迫条件下表现出受损的生长,表明NADH氧化酶参与氧化胁迫耐受。利用小鼠和猪感染模型,我们首次证明了NADH氧化酶是S. suis 2.此外,NADH氧化酶的酶活性在氧化应激耐受性中起关键作用,在毒力中起次要作用。总之,我们的研究结果揭示了NADH氧化酶在SpxA1功能中起着重要作用,并为S. suis 2.
ABSTRACT Streptococcus suis is a major swine and zoonotic pathogen that causes severe infections. Previously, we identified 2 Spx regulators in S. suis, and demonstrated that SpxA1 affects oxidative stress tolerance and virulence. However, the mechanism behind SpxA1 function remains unclear. In this study, we targeted 4 genes that were expressed at significantly reduced levels in the spxA1 mutant, to determine their specific roles in adaptation to oxidative stress and virulence potential. The Δnox strain exhibited impaired growth under oxidative stress conditions, suggesting that NADH oxidase is involved in oxidative stress tolerance. Using murine and pig infection models, we demonstrate for the first time that NADH oxidase is required for virulence in S. suis 2. Furthermore, the enzymatic activity of NADH oxidase has a key role in oxidative stress tolerance and a secondary role in virulence. Collectively, our findings reveal that NADH oxidase plays an important part in SpxA1 function and provide a new insight into the pathogenesis of S. suis 2.
DOI: 10.1371/journal.pone.0005317
发表时间: 2009
期刊: PloS one
影响因子: 3.7
作者:
Diezmann S;Dietrich FS
通讯作者: Dietrich FS
DOI: 10.1038/srep13125
发表时间: 2015-08-14
期刊: Scientific reports
影响因子: 4.6
作者:
Zheng C;Xu J;Ren S;Li J;Xia M;Chen H;Bei W
通讯作者: Bei W
DOI: 10.1128/iai.06163-11
发表时间: 2012-03-01
影响因子: 3.1
作者:
Djoko, Karrera Y.;Franiek, Jessica A.;McEwan, Alastair G.
通讯作者: McEwan, Alastair G.
DOI: 10.1128/iai.69.8.5098-5106.2001
发表时间: 2001-08-01
影响因子: 3.1
作者:
Poyart, C;Pellegrini, E;Trieu-Cuot, P
通讯作者: Trieu-Cuot, P
DOI: 10.1128/jb.01542-14
发表时间: 2014-06-01
影响因子: 3.2
作者:
Baker, J. L.;Derr, A. M.;Quivey, R. G., Jr.
通讯作者: Quivey, R. G., Jr.