H-NS is a repressor of major virulence gene loci in Vibrio parahaemolyticus.

H-NS is a repressor of major virulence gene loci in Vibrio parahaemolyticus.
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H-NS 是副溶血弧菌主要毒力基因位点的抑制因子

DOI:
10.3389/fmicb.2014.00675
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发表时间:
2014
影响因子:
5.2
通讯作者:
Zhou D
Zhou D
中科院分区:
生物学2区
文献类型:
--
作者:
Sun F;Zhang Y;Qiu Y;Yang H;Yang W;Yin Z;Wang J;Yang R;Xia P;Zhou D

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副溶血性弧菌(Vibrio parahaemolyticus)是引起海产品相关性腹泻和胃肠炎的主要病原菌,其主要毒力基因位点为T3 SS 1、Vp-PAI(T3 SS 1 + tdh 2)和T6 SS 2。如本研究所示,核苷酸相关的DNA结合调节剂H-NS与上述三个位点中的每一个的多个启动子近端区域结合以抑制它们的转录,并且H-NS抑制副溶血性弧菌的细胞毒性、肠毒性、溶血活性和小鼠致死性。H-NS似乎是这种病原体毒力的主要阻遏物。本研究的结果将有助于我们更深入地了解H-NS介导的副溶血性弧菌水平获得性毒力基因座的沉默。
Vibrio parahaemolyticus, a leading cause of seafood-associated diarrhea and gastroenteritis, harbors three major virulence gene loci T3SS1, Vp-PAI (T3SS1+tdh2) and T6SS2. As showing in this study, the nucleoid-associated DNA-binding regulator H-NS binds to multiple promoter-proximal regions in each of the above three loci to repress their transcription, and moreover H-NS inhibits the cytotoxicitiy, enterotoxicity, hemolytic activity, and mouse lethality of V. parahaemolyticus. H-NS appears to act as a major repressor of the virulence of this pathogen. Date presented here would promote us to gain a deeper understanding of H-NS-mediated silencing of horizontally acquired virulence loci in V. parahaemolyticus.
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发表时间: 2009-04
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