An integrated transcriptome and proteomic investigation of the stress responses of viable but non-culturable (VBNC) state Salmonella Enteritidis triggered by sodium hypochlorite
文献类型： 外文期刊
作者： Wang, Wen 1 ; Wang, Wensi 2 ; Yi, Zhengkai 2 ; Ma, Jiele 2 ; Hou, Wenfu 3 ; Xiao, Yingping 2 ; Yang, Hua 2 ; Wang, Hongxun 3 ; Xiao, Xingning 2 ;
作者机构： 1.China Jiliang Univ, Coll Life Sci, Key Lab Microbiol Metrol Measurement & Bioprod Qua, State Adm Market Regulat, Hangzhou 310018, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, State Key Lab Managing Biot & Chem Threats Qual &, MOA Lab Qual & Safety Risk Assessment Agroprod Han, Hangzhou 310021, Peoples R China
3.Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Peoples R China
关键词：
Viable but non-culturable state; Transcriptomic-proteomic; Sodium hypochlorite;
期刊名称：FOOD SCIENCE AND HUMAN WELLNESS （ 影响因子：7.4； 五年影响因子：7.8 ）
ISSN：
年卷期： 2025 年 14 卷 5 期
页码：
收录情况： SCI
摘要： Viable but non-culturable (VBNC) bacteria after chlorination disinfection pose a considerable threat to the public health and environment. The current work aimed to uncover the stress adaptation mechanisms of VBNC Salmonella Enteritidis to sodium hypochlorite. In this study, we investigated the morphology, gene expressions and proteomic profile in VBNC S. Enteritidis. It demonstrated that 109 cells/mL of bacteria could transition into the VBNC state after exposure to 50 mg/L chlorine for 2.5 h. The VBNC state cells exhibited cellular membrane impairment, decreased size, and intracellular ATP depletion compared to the culturable cells. In the VBNC state cells, there was a significant increase in intracellular reactive oxygen species (ROS) levels and NAD+/NADH ratios. This observation suggested an imbalance in the intracellular redox status of the VBNC bacteria. Transcriptome and proteomic analysis revealed significant upregulation of the resistance-nodulation-division (RND) efflux systems (arcA, tolC, ramA), oxidative stress response genes (soxR, trxA, grxB), DNA repair genes (lexA, radA, mutH, mutL), and virulence factor genes (sseA, sseL, eutS, and eutE). Our findings indicated that it is important to formulate disinfection protocols that are specifically designed for food processing plants and healthcare facilities, focusing on implementing a more thorough disinfection method to effectively eradicate VBNC cells.
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