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
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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
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发表时间:
2017-01
期刊:
影响因子:
5.2
通讯作者:
Bei Weicheng
中科院分区:
文献类型:
--
作者:
Zheng Chengkun;Ren Sujing;Xu Jiali;Zhao Xigong;Shi Guolin;Wu Jianping;Li Jinquan;Chen Huanchun;Bei Weicheng
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.
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影响因子:
3.7
作者:
Diezmann S;Dietrich FS
通讯作者:
Dietrich FS
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
影响因子:
3.1
作者:
Djoko, Karrera Y.;Franiek, Jessica A.;McEwan, Alastair G.
通讯作者:
McEwan, Alastair G.
影响因子:
3.1
作者:
Poyart, C;Pellegrini, E;Trieu-Cuot, P
通讯作者:
Trieu-Cuot, P
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.