1
|
Hua K, Li T, He Y, Guan A, Chen L, Gao Y, Xu Q, Wang H, Luo R, Zhao L, Jin H. Resistin secreted by porcine alveolar macrophages leads to endothelial cell dysfunction during Haemophilus parasuis infection. Virulence 2023; 14:2171636. [PMID: 36694280 PMCID: PMC9928480 DOI: 10.1080/21505594.2023.2171636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Haemophilus parasuis (H. parasuis) causes exudative inflammation, implying endothelial dysfunction during pathogen infection. However, so far, the molecular mechanism of endothelial dysfunction caused by H. parasuis has not been clarified. By using the transwell-based cell co-culture system, we demonstrate that knocking out resistin in porcine alveolar macrophages (PAMs) dramatically attenuated endothelial monolayer damage caused by H. parasuis. The resistin secreted by PAMs inhibited the expression of the tight junction proteins claudin-5 and occludin rather than the adherens junction protein VE-cadherin in co-cultured porcine aortic endothelial cells (PAECs). Furthermore, we demonstrate that resistin regulated claudin-5 and occludin expression and monolayer PAEC permeability in an LKB1/AMPK/mTOR pathway-dependent manner. Additionally, we reveal that the outer membrane lipoprotein gene lppA in H. parasuis induced resistin expression in PAMs, as deleting lppA reduced resistin expression in H. parasuis-infected PAMs, causing a significant change in LKB1/AMPK/mTOR pathway activity in co-cultured PAECs, thereby restoring tight junction protein levels and endothelial monolayer permeability. Thus, we postulate that the H. parasuis lppA gene enhances resistin production in PAMs, disrupting tight junctions in PAECs and causing endothelial barrier dysfunction. These findings elucidate the pathogenic mechanism of exudative inflammation caused by H. parasuis for the first time and provide a more profound angle of acute exudative inflammation caused by bacteria.
Collapse
Affiliation(s)
- Kexin Hua
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Tingting Li
- Department of Animal Disease Diagnosis, Hubei Animal Disease Prevention and Control Centre, Wuhan, China
| | - Yanling He
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Aohan Guan
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Liying Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Yuan Gao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Qianshuan Xu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Haoyu Wang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Rui Luo
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Ling Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
| | - Hui Jin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China,CONTACT Hui Jin
| |
Collapse
|
2
|
GUO Z, JIA Y, HUANG C, ZHOU Y, CHEN X, YIN R, GUO Y, WANG L, YUAN J, WANG J, YAN P, YIN R. Immunogenicity and protection against Glaesserella parasuis serotype 13 infection after vaccination with recombinant protein LolA in mice. J Vet Med Sci 2022; 84:1527-1535. [PMID: 36216558 PMCID: PMC9705812 DOI: 10.1292/jvms.22-0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/19/2022] [Indexed: 01/03/2024] Open
Abstract
Glaesserella parasuis is a pathogen causing Glässer's disease characterized by fibrinous polyserositis, polyarthritis, and meningitis. Owing to the low cross-immunogenicity of different bacterial antigens in commercial vaccines, finding and identifying effective immunoprotective antigens will facilitate the development of novel subunit vaccines. In this study, LolA, identified by bioinformatics approaches, was cloned and successfully expressed as a recombinant protein in Escherichia coli, and its immunogenicity and protection were evaluated in a mouse model. The results showed that the recombinant protein LolA can stimulate mice to produce high levels of IgG antibodies and confer 50% protection against challenge with the highly virulent G. parasuis CY1201 strain (serotype 13). By testing the cytokine levels of interleukin 4 (IL-4), IL-10, and interferon-γ (IFN-γ), it was found that the recombinant protein LolA can induce both Th1 and Th2 immune responses in mice. These results suggest that the recombinant protein LolA has the potential to serve as an alternative antigen for a novel vaccine to prevent G. parasuis infection.
Collapse
Affiliation(s)
- Zhongbo GUO
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Yongchao JIA
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Chen HUANG
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Yuanyuan ZHOU
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Xin CHEN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Ronglan YIN
- Research Academy of Animal Husbandry and Veterinary Medicine Sciences of Jilin Province, Changchun, China
| | - Ying GUO
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Linxi WANG
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Jing YUAN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Jingyi WANG
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Ping YAN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Ronghuan YIN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| |
Collapse
|