Salmonella Pathogenicity Island 1 (SPI-1) and Its Complex Regulatory Network

Frontiers in Cellular and Infection Microbiology

Rongli Piao¹  Lixin Lou²  Yang Wang³  Peng Zhang³ 

[1] Department of Gastroenterology, First Hospital of Jilin University, Changchun, China;Department of Infectious Diseases, First Hospital of Jilin University, Changchun, China;Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States;

关键词: Salmonella;    SPI-1;    T3SS;    effector;    regulation;    immune response;   

DOI  :  10.3389/fcimb.2019.00270

来源: DOAJ

【 摘 要 】

Salmonella species can infect a diverse range of birds, reptiles, and mammals, including humans. The type III protein secretion system (T3SS) encoded by Salmonella pathogenicity island 1 (SPI-1) delivers effector proteins required for intestinal invasion and the production of enteritis. The T3SS is regarded as the most important virulence factor of Salmonella. SPI-1 encodes transcription factors that regulate the expression of some virulence factors of Salmonella, while other transcription factors encoded outside SPI-1 participate in the expression of SPI-1-encoded genes. SPI-1 genes are responsible for the invasion of host cells, regulation of the host immune response, e.g., the host inflammatory response, immune cell recruitment and apoptosis, and biofilm formation. The regulatory network of SPI-1 is very complex and crucial. Here, we review the function, effectors, and regulation of SPI-1 genes and their contribution to the pathogenicity of Salmonella.

【 授权许可】

Unknown