微生物學(xué)報(bào)Acta Microbiologica Sinica
48(6):839~843; 4 June 2008
馮瑩穎,,張曉莉,,羅勤*,周青春
(華中師范大學(xué)生命科學(xué)學(xué)院,,遺傳調(diào)控與整合生物學(xué)湖北省重點(diǎn)實(shí)驗(yàn)室,,武漢430079)
摘要:Sigma B(σB)是許多革蘭氏陽性菌對環(huán)境脅迫產(chǎn)生應(yīng)答反應(yīng)的主要調(diào)控因子。不僅在芽孢形成中具有重要作用,,而且σB 也直接或間接地調(diào)控包括蠟樣芽孢桿菌(Bacillus cereus),、單核細(xì)胞增生李斯特菌(Listeria monocytogenes)和金黃色葡萄球菌(Staphylococcus aureus)在內(nèi)的一些革蘭氏陽性食源性致病菌毒力及毒力相關(guān)基因的表達(dá)。本文結(jié)合作者在國內(nèi)外的相關(guān)工作,,綜述了σB 活性的調(diào)節(jié)方式及其在上述革蘭氏陽性食源性致病菌中相關(guān)作用的最新研究進(jìn)展,,為深入研究革蘭氏陽性食源性致病菌的致病機(jī)理、預(yù)防和治療細(xì)菌感染提供新的思路和理論依據(jù),。
關(guān)鍵詞:Sigma B 因子;革蘭氏陽性食源性致病菌,;壓力應(yīng)答,;調(diào)控;毒力
*通訊作者,。Tel: +86-27-67867221; Fax: +86-27-67861936; E-mail: [email protected]
作者簡介: 馮瑩穎(1985. ), 女, 在讀研究生,。研究方向: 微生物分子生物學(xué)。
中圖分類號(hào):Q933 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):0001-6209 (2008) 06-0839-05
The regulation of σB activity and its role in some gram-positive food-borne pathogens—— A review
Yingying Feng, Xiaoli Zhang, Qin Luo*, Qingchun Zhou
(Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Science, Central China Normal University, Wuhan, 430079, China)
Abstract: The alternative sigma factor σB modulates the stress response of several Gram-positive bacteria. Not only does σB play a prominent role in sporulation in the Gram-positive model organism Bacillus subtilis, but it also contributes both directly and indirectly to bacterial virulence in the food-borne human pathogens Bacillus cereus, Listeria monocytogenes and Staphylococcus aureus. As σB has been shown to regulate expression of both virulence and virulence-associated genes, it indicates that σB is a key player in pathogen ecophysiology.
Keywords: σB; Gram-positive food-borne pathogens; stress response; regulation; bacterial virulence
基金項(xiàng)目: 國家資助自然科學(xué)基金項(xiàng)目(30500025); 教育部留學(xué)回國人員科研啟動(dòng)基金; 教育部211 重點(diǎn)學(xué)科項(xiàng)目
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Sigma B 因子活性的調(diào)節(jié)及其在幾種革蘭氏陽性食源性致病菌中的作用
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