Abstract

In order to clarified characteristics and function of internalin G (inlG) in Listeria monocytogenes ATCC®19111 (1/2a) (LM), the immune protection of the inlG was evaluated in mice, the homologous recombination was used to construct inlG deletion strains, and their biological characteristics were studied by the transcriptomics analysis. As a result, the immunization of mice with the purified protein achieved a protective effect against bacterial infection. The deletion strain LM-AinlG was successfully constructed with genetic stability. The mouse infection test showed that the virulence of LM was decreased after the deletion of the inlG gene. The deletion strain showed enhanced adhesion to and invasion of Caco-2 cells. Compared to the wild strain, 18 genes were up-regulated, and 24 genes were down-regulated in the LM-AinlG. This study has laid a foundation for further research on the function of inlG and the pathogenesis of LM.

In this study, immunization of mice with the purified inlG protein achieved a protective effect against Listeria monocytogenes infection. The virulence of LM-ΔinlG was decreased by mouse infection. However, the adhesion and invasion ability to Caco-2 cell were enhanced. Compared to the wild strain, 18 genes were up-regulated, and 24 genes were down-regulated in the LM-ΔinlG. This study has laid a foundation for further study of the function of the inlG and the listeriosis.

Details

Title
The Characteristics and Function of Internalin G in Listeria monocytogenes
Author
Gou, Huitian 1 ; Liu, Yuanyuan 1 ; Shi, Wenjing 1 ; Jinyu Nan 2 ; Wang, Chuan 1 ; Sun, Yanan 1 ; Cao, Qihang 1 ; Wei, Huilin 1 ; Chen, Song 1 ; Tian, Changqing 1 ; Yanquan Wei 1 ; Xue, Huiwen 1 

 College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China 
 Jiuquan City Animal Control Disease Center, Jiuquan, China 
Pages
63-71
Publication year
2022
Publication date
2022
Publisher
De Gruyter Poland
ISSN
17331331
e-ISSN
25444646
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2785177814
Copyright
© 2022. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.