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沙门氏菌因子分子机制的近期进展涉及肠道上皮层入侵的沙门氏菌因子分子机制

Chikesh Mishra¹, Sheela Kumari Sahoo¹, Namrata Misra¹

¹School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT- DU), Bhubaneswar, 751024, India.

Molecular biology reports

|June 16, 2025

概括

沙门氏菌细菌通过3型分泌系统 (T3SS) 输送效应蛋白入侵肠道. 这些蛋白质操纵宿主细胞,使细菌进入,存活,并在肠表皮内形成.

科学领域:

微生物学微生物学
细胞生物学细胞生物学
病原体与宿主之间的相互作用

背景情况:

沙门氏菌 (Salmonella enterica) 导致全球显著的胃肠道疾病.
这种由食物传播的病原体采用复杂的分子策略来入侵并在宿主肠道上皮层中生存.
主体-病原体相互作用涉及由沙门氏菌病原性岛屿 (SPI) 调节的复杂的粘附,入侵和生存机制.

研究的目的:

审查沙门氏菌入侵肠道上皮的分子机制.
阐明3型分泌系统 (T3SS) 产生的效应蛋白在沙门氏菌病变中的作用.
详细介绍了促进细菌进入和细胞内生存的连续事件.

主要方法:

科学文献的系统审查.
分析涉及沙门氏菌效应蛋白的分子机制.
描述3型分泌系统 (T3SS) 在宿主细胞操纵中的功能.

主要成果:

像SipB和SipC这样的效应蛋白通过稳定宿主细胞结构来促进细菌进入.
SopE和SopB促进膜,有助于入侵.
SptP恢复宿主细胞形状以使病原体存活,而SteA,SteC和PipB2则有助于形成含沙门氏菌的真空体 (SCV).
SPI-2 T3SS效应器 (SseB,SseC,SseD) 稳定了SCV,使其存活时间延长.

结论:

沙门氏菌利用T3SS效应蛋白的协调武器库来突破肠道上皮质.
这些效应器策划了一系列事件,从初始进入到建立细胞内 (SCVs) 以求生存.
了解这些分子过程对于制定针对沙门氏菌感染的策略至关重要.

关键词:

沙门氏菌是一种沙门氏菌.沙门氏菌的病原性沙门氏菌病原性岛屿的病原性宿主-病原体相互作用这是入侵的入侵.病毒效应因子的病毒效应因子.

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