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Zhao G, Tang Y, Dan R, Xie M, Zhang T, Li P, He F, Li N, Peng Y. Pasteurella multocida activates apoptosis via the FAK-AKT-FOXO1 axis to cause pulmonary integrity loss, bacteremia, and eventually a cytokine storm. Vet Res 2024; 55:46. [PMID: 38589976 PMCID: PMC11003142 DOI: 10.1186/s13567-024-01298-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/19/2024] [Indexed: 04/10/2024] Open
Abstract
Pasteurella multocida is an important zoonotic respiratory pathogen capable of infecting a diverse range of hosts, including humans, farm animals, and wild animals. However, the precise mechanisms by which P. multocida compromises the pulmonary integrity of mammals and subsequently induces systemic infection remain largely unexplored. In this study, based on mouse and rabbit models, we found that P. multocida causes not only lung damage but also bacteremia due to the loss of lung integrity. Furthermore, we demonstrated that bacteremia is an important aspect of P. multocida pathogenesis, as evidenced by the observed multiorgan damage and systemic inflammation, and ultimately found that this systemic infection leads to a cytokine storm that can be mitigated by IL-6-neutralizing antibodies. As a result, we divided the pathogenesis of P. multocida into two phases: the pulmonary infection phase and the systemic infection phase. Based on unbiased RNA-seq data, we discovered that P. multocida-induced apoptosis leads to the loss of pulmonary epithelial integrity. These findings have been validated in both TC-1 murine lung epithelial cells and the lungs of model mice. Conversely, the administration of Ac-DEVD-CHO, an apoptosis inhibitor, effectively restored pulmonary epithelial integrity, significantly mitigated lung damage, inhibited bacteremia, attenuated the cytokine storm, and reduced mortality in mouse models. At the molecular level, we demonstrated that the FAK-AKT-FOXO1 axis is involved in P. multocida-induced lung epithelial cell apoptosis in both cells and animals. Thus, our research provides crucial information with regard to the pathogenesis of P. multocida as well as potential treatment options for this and other respiratory bacterial diseases.
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Affiliation(s)
- Guangfu Zhao
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yunhan Tang
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Ruitong Dan
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Muhan Xie
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Tianci Zhang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Pan Li
- Department of Environment and Safety Engineering, Taiyuan Institute of Technology, Taiyuan, China
| | - Fang He
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Nengzhang Li
- College of Veterinary Medicine, Southwest University, Chongqing, China.
| | - Yuanyi Peng
- College of Veterinary Medicine, Southwest University, Chongqing, China.
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Zhao G, Tang Y, Liu X, Li P, Zhang T, Li N, He F, Peng Y. Pasteurella multocida activates Rassf1-Hippo-Yap pathway to induce pulmonary epithelial apoptosis. Vet Res 2024; 55:31. [PMID: 38493147 PMCID: PMC10943858 DOI: 10.1186/s13567-024-01285-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/06/2024] [Indexed: 03/18/2024] Open
Abstract
Pasteurella multocida is an opportunistic zoonotic pathogen that primarily causes fatal respiratory diseases, such as pneumonia and respiratory syndromes. However, the precise mechanistic understanding of how P. multocida disrupts the epithelial barrier in mammalian lung remains largely unknown. In this study, using unbiased RNA-seq analysis, we found that the evolutionarily conserved Hippo-Yap pathway was dysregulated after P. multocida infection. Given the complexity of P. multocida infection associated with lung injury and systemic inflammatory processes, we employed a combination of cell culture models, mouse models, and rabbit models to investigate the dynamics of the Hippo-Yap pathway during P. multocida infection. Our findings reveal that P. multocida infection activates the Hippo-Yap pathway both in vitro and in vivo, by upregulating the upstream factors p-Mst1/2, p-Lats1, and p-Yap, and downregulating the downstream effectors Birc5, Cyr61, and Slug. Conversely, pharmacological inhibition of the Hippo pathway by XMU-MP-1 significantly rescued pulmonary epithelial cell apoptosis in vitro and reduced lung injury, systemic inflammation, and mouse mortality in vivo. Mechanistic studies revealed that P. multocida induced up-regulation of Rassf1 expression, and Rassf1 enhanced Hippo-Yap pathway through phosphorylation. Accordingly, in vitro knockdown of Rassf1 significantly enhanced Yap activity and expression of Yap downstream factors and reduced apoptosis during P. multocida infection. P. multocida-infected rabbit samples also showed overexpression of Rassf1, p-Lats1, and p-Yap, suggesting that P. multocida activates the Rassf1-Hippo-Yap pathway. These results elucidate the pathogenic role of the Rassf1-Hippo-Yap pathway in P. multocida infection and suggest that this pathway has the potential to be a drug target for the treatment of pasteurellosis.
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Affiliation(s)
- Guangfu Zhao
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yunhan Tang
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Xiongli Liu
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Pan Li
- Department of Environment and Safety Engineering, Taiyuan Institute of Technology, Taiyuan, China
| | - Tianci Zhang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Nengzhang Li
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Fang He
- College of Veterinary Medicine, Southwest University, Chongqing, China.
| | - Yuanyi Peng
- College of Veterinary Medicine, Southwest University, Chongqing, China.
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Rizk MA, El-Sayed SAES, Salman D, Marghani BH, Gadalla HE, Sayed-Ahmed MZ. Immunomodulatory Effect of Vitamin C on Proinflammatory Cytokines Production in Ossimi Lambs (Ovis aries) with Pneumonic Pasteurellosis. Animals (Basel) 2021; 11:ani11123374. [PMID: 34944151 PMCID: PMC8697947 DOI: 10.3390/ani11123374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/20/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, we have investigated the impact of vitamin C on the production of pro-inflammatory cytokines (interleukin 1 β (IL-1 β), interleukin 6 (IL-6), interleukin 12p40 (IL-12p40), interferon gamma (IFNγ), and tumor necrosis factor alpha (TNF-α)) in lambs naturally infected by pneumonic pasteurellosis. Of 37 lambs, 18 lambs were identified to have pneumonic pasteurellosis and randomly allocated into two equal groups. Single subcutaneous dose of tulathromycine alone (2.5 mg kg−1) or tulathromycine combined with vitamin C (3 gm kg−1) were administrated to the diseased lambs. The serum levels of IL-1β, IL-6, IFN-γ, and TNF-α were returned to the normal levels in pneumonic lambs treated with the combination therapy. The obtained results indicate the selective influences of vitamin C on pro-inflammatory cytokines production in sera of lambs with pneumonic pasteurellosis and highlights the value of vitamin C as a potential anti-inflammatory drug and ideal immunomodulatory agent.
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Affiliation(s)
- Mohamed Abdo Rizk
- Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
- Correspondence:
| | - Shimaa Abd El-Salam El-Sayed
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Doaa Salman
- Department of Animal Medicine, Faculty of Veterinary Medicine, Sohag University, Sohag 82524, Egypt;
| | - Basma H. Marghani
- Department of Physiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Hossam Elshahat Gadalla
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Mohamed Z. Sayed-Ahmed
- Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
- Department of Clinical Pharmacy, College of Pharmacy, Jazan University, Jizan 82722, Saudi Arabia
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Guan LJ, Song JJ, Xue Y, Ai X, Liu ZJ, Si LF, Li MY, Zhao ZQ. Immune Protective Efficacy of China's Traditional Inactivated and Attenuated Vaccines against the Prevalent Strains of Pasteurella multocida in Mice. Vaccines (Basel) 2021; 9:vaccines9101155. [PMID: 34696263 PMCID: PMC8537324 DOI: 10.3390/vaccines9101155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022] Open
Abstract
Capsular type A and D strains of Pasteurella multocida are the main epidemic serogroups in pigs in China. In this study, we preliminarily evaluated the immune protective efficacy of the two traditional vaccines, an inactivated C44-1 aluminum-hydroxide-gel-adjuvanted (Alh–C44-1) vaccine and a live EO630 vaccine, against currently circulating strains of P. multocida in a mouse model. Mice immunized twice with conventional vaccines generated higher antibody titers, and significantly higher levels of IgG were observed in the mice inoculated with the inactivated Alh–C44-1 vaccine on day 35 (p < 0.05) than those with the live EO630 vaccine. The mice immune protection test showed that the vaccination groups had a 57% or 71% protection effect against the serogroup B strain, but had no protective effect against epidemic strains. In conclusion, our study found that the widely used traditional P. multocida vaccines in China provide good protection against homologous strains, but could not provide cross-protection against heterologous strains in a mouse model.
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Affiliation(s)
- Li-Jun Guan
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Ji-Jian Song
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Yun Xue
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Xia Ai
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China;
| | - Zhi-Jun Liu
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Li-Fang Si
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Meng-Yun Li
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhan-Qin Zhao
- Laboratory of Veterinary Biologics Engineering, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (L.-J.G.); (J.-J.S.); (Y.X.); (Z.-J.L.); (L.-F.S.); (M.-Y.L.)
- Key-Disciplines Lab of Safety of Environment and Animal Product, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
- Correspondence: ; Tel.: +86-150-3633-5032
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