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Li S, Xu G, Guo Z, Liu Y, Ouyang Z, Li Y, Huang Y, Sun Q, Giri BR, Fu Q. Deficiency of hasB accelerated the clearance of Streptococcus equi subsp. Zooepidemicus through gasdermin d-dependent neutrophil extracellular traps. Int Immunopharmacol 2024; 140:112829. [PMID: 39083933 DOI: 10.1016/j.intimp.2024.112829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 07/23/2024] [Accepted: 07/26/2024] [Indexed: 08/02/2024]
Abstract
Streptococcus equi subsp. zooepidemicus (S. zooepidemicus, SEZ) is an essential zoonotic bacterial pathogen that can cause various inflammation, such as meningitis, endocarditis, and pneumonia. UDP-glucose dehydrogenase (hasB) is indispensable in synthesizing SEZ virulence factor hyaluronan capsules. Our study investigated the infection of hasB on mice response to SEZ by employing a constructed capsule-deficient mutant strain designated as the ΔhasB strain. This deficiency was associated with a reduced SEZ bacterial load in the mice's blood and peritoneal lavage fluid (PLF) post-infection. Besides, the ΔhasB SEZ strain exhibited a higher propensity for neutrophil infiltration and release of cell-free DNA (cfDNA) in vivo compared to the wild-type (WT) SEZ strain. In vitro experiments further revealed that ΔhasB SEZ more effectively induced the formation of neutrophil extracellular traps (NETs) containing histone 3 (H3), neutrophil elastase (NE), and DNA, than its WT counterpart. Moreover, the release of NETs was determined to be gasdermin D (GSDMD)-dependent during the infection process. Taken together, these findings underscore that the deficiency of the hasB gene in SEZ leads to enhanced GSDMD-dependent NET release from neutrophils, thereby reducing SEZ's capacity to resist NETs-mediated eradication during infection. Our finding paves the way for the development of innovative therapeutic strategies against SEZ.
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Affiliation(s)
- Shun Li
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, Guangdong, China
| | - Guobin Xu
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Zheng Guo
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Yuxuan Liu
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Zhiliang Ouyang
- Houjie Town Agricultural Technology Service Center, Dongguan, Guangdong, China
| | - Yajuan Li
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, Guangdong, China
| | - Yunfei Huang
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, Guangdong, China
| | - Qinqin Sun
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, Guangdong, China
| | - Bikash R Giri
- Department of Zoology, K.K.S. Women's College, Balasore, Odisha, India
| | - Qiang Fu
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, Guangdong, China.
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2
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Gao P, Wang L, Wang S, Li G, Yi C, Wang Y, Li L, Zhang A, Zhou H, Han L. The activity of hyaD contributed to the virulence of avian Pasteurella multocida. Microb Pathog 2024; 193:106768. [PMID: 38960217 DOI: 10.1016/j.micpath.2024.106768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/06/2024] [Accepted: 06/29/2024] [Indexed: 07/05/2024]
Abstract
Fowl cholera is an infectious disease that affects both poultry and wild birds, characterized by hemorrhagic and septicemic symptoms, caused by Pasteurella multocida (P. multocida), and leading to substantial economic losses in the poultry sector. The development of genetic engineering vaccines against avian P. multocida encountered early-stage challenges due to the limited availability of effective gene editing tools. Presently, NgAgoDM-enhanced homologous recombination stands as a potent technique for achieving efficient gene knockout in avian P. multocida. Hence, this study employed NgAgoDM-enhanced homologous recombination to target and knockout hyaE (239-359aa), hyaD, hexABC, and hexD, denoted as ΔhyaE (239-359aa), ΔhyaD, ΔhexABC, and ΔhexD, respectively. Additionally, we generated a hyaD recovery strain with two point mutations, designated as mhyaD. Thus, this study systematically examined the impact of capsular synthetic gene clusters on the pathogenicity of P. multocida. Moreover, the study demonstrated the critical role of hyaD activity in the virulence of avian P. multocida. This study offers novel insights for enhancing attenuated vaccines further.
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Affiliation(s)
- Peiying Gao
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Libo Wang
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Shan Wang
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China; Wuhan Keqian Biology Co., Ltd, Wuhan, 430070, China
| | - Guohong Li
- Wuhan Keqian Biology Co., Ltd, Wuhan, 430070, China
| | - Chenyang Yi
- Wuhan Keqian Biology Co., Ltd, Wuhan, 430070, China
| | - Yuhua Wang
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Long Li
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China; Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, 430070, China
| | - Anding Zhang
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China; Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, 430070, China
| | - Hongbo Zhou
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China; Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, 430070, China
| | - Li Han
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China.
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3
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DeAngelis PL, Zimmer J. Hyaluronan synthases; mechanisms, myths, & mysteries of three types of unique bifunctional glycosyltransferases. Glycobiology 2023; 33:1117-1127. [PMID: 37769351 PMCID: PMC10939387 DOI: 10.1093/glycob/cwad075] [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: 07/22/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 09/30/2023] Open
Abstract
Hyaluronan (HA), the essential [-3-GlcNAc-1-β-4-GlcA-1-β-]n matrix polysaccharide in vertebrates and molecular camouflage coating in select pathogens, is polymerized by "HA synthase" (HAS) enzymes. The first HAS identified three decades ago opened the window for new insights and biotechnological tools. This review discusses current understanding of HA biosynthesis, its biotechnological utility, and addresses some misconceptions in the literature. HASs are fascinating enzymes that polymerize two different UDP-activated sugars via different glycosidic linkages. Therefore, these catalysts were the first examples to break the "one enzyme/one sugar transferred" dogma. Three distinct types of these bifunctional glycosyltransferases (GTs) with disparate architectures and reaction modes are known. Based on biochemical and structural work, we present an updated classification system. Class I membrane-integrated HASs employ a processive chain elongation mechanism and secrete HA across the plasma membrane. This complex operation is accomplished by functionally integrating a cytosolic catalytic domain with a channel-forming transmembrane region. Class I enzymes, containing a single GT family-2 (GT-2) module that adds both monosaccharide units to the nascent chain, are further subdivided into two groups that construct the polymer with opposite molecular directionalities: Class I-R and I-NR elongate the HA polysaccharide at either the reducing or the non-reducing end, respectively. In contrast, Class II HASs are membrane-associated peripheral synthases with a non-processive, non-reducing end elongation mechanism using two independent GT-2 modules (one for each type of monosaccharide) and require a separate secretion system for HA export. We discuss recent mechanistic insights into HA biosynthesis that promise biotechnological benefits and exciting engineering approaches.
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Affiliation(s)
- Paul L DeAngelis
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Oklahoma, OK 73104, United States
| | - Jochen Zimmer
- Department of Molecular Physiology and Biological Physics, Howard Hughes Medical Institute, University of Virginia, 480 Ray C. Hunt Dr, Charlottesville, VA 22908, United States
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Soni S, Chahar M, Priyanka, Chugh P, Sharma A, Narasimhan B, Mohan H. Identification of Aztreonam as a potential antibacterial agent against Pasteurella multocida sialic acid binding protein: A combined in silico and in-vitro analysis. Microb Pathog 2023; 185:106398. [PMID: 37852551 DOI: 10.1016/j.micpath.2023.106398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/06/2023] [Accepted: 10/14/2023] [Indexed: 10/20/2023]
Abstract
Pasteurella multocida, a Gram-negative zoonotic bacterial pathogen, interacts with the host environment, immune response, and infection through outer membrane proteins, adhesins, and sialic acid binding proteins. Sialic acids provide nutrition and mask bacterial identity, hindering the complement system, facilitates tissue access and biofilm formation. Sialic acid binding protein (SAB) enable adhesion to host cells, immune evasion, and nutrient acquisition, making them potential targets for preventing Pasteurella multocida infections. In this study, in silico molecular docking assessed 11 antibiotics targeting SAB (4MMP) comparing their docking scores to Amoxicillin. As SAB (4MMP) exhibits a highly conserved sequence in various Pasteurella multocida strains, including the specific strain PMR212 studied in this article, with a 96.09% similarity score. Aztreonam and Gentamicin displayed the highest docking scores (-6.025 and -5.718), followed by a 100ns molecular dynamics simulation. Aztreonam exhibited stable simulation with protein RMSD fluctuations of 1.8-2.2 Å. The ligand initially had an RMSD of 1.6 Å, stabilizing at 4.8 Å. Antibiotic sensitivity testing confirmed Aztreonam's efficacy with the largest inhibition zone of 42 mm, while Amoxicillin and Gentamicin had inhibition zones of 32 mm and 25 mm, respectively. According to CLSI guidelines, all three antibiotics were effective against Pasteurella multocida. Aztreonam's superior efficacy positions it as a promising candidate for further investigation in targeting Pasteurella multocida.
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Affiliation(s)
- Subodh Soni
- Centre for Medical Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Manjeet Chahar
- Centre for Medical Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Priyanka
- Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Pooja Chugh
- Centre for Medical Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Aastha Sharma
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | | | - Hari Mohan
- Centre for Medical Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
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5
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Williams KH, Jagadish A, Shah R. A Case of Pasteurella Bacteremia in a Patient With Hepatocellular Carcinoma. Cureus 2023; 15:e50161. [PMID: 38186515 PMCID: PMC10771712 DOI: 10.7759/cureus.50161] [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] [Accepted: 12/07/2023] [Indexed: 01/09/2024] Open
Abstract
Pasteurella multocida is a Gram-negative coccobacillus commonly associated with soft tissue and skin infections. On rare occasions, it may result in systemic bacteremia and sepsis. Our case describes a 59-year-old male who presented to the emergency department with septic shock. Physical examination was remarkable for bilateral lower extremity wounds which were in recent contact with feline oral secretions. Blood cultures were obtained and resulted in the growth of P. multocida after 48 hours. His treatment involved intravenous antibiotics and supportive care. After finishing his two-week course of antibiotics, he was placed on inpatient hospice care due to his clinical course involving other comorbidities and expired shortly after. This case highlights the importance of early recognition and treatment of P. multocida infection in patients with comorbid conditions such as hepatocellular carcinoma.
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Affiliation(s)
- Kendrick H Williams
- Internal Medicine, East Tennessee State University, James H. Quillen College of Medicine, Johnson City, USA
| | - Ashwin Jagadish
- Internal Medicine, East Tennessee State University, James H. Quillen College of Medicine, Johnson City, USA
| | - Rupal Shah
- Internal Medicine, East Tennessee State University, James H. Quillen College of Medicine, Johnson City, USA
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6
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Jia J, Zhao M, Ma K, Zhang H, Gui L, Sun H, Ren H, Okabayashi T, Zhao J. The Immunoprotection of OmpH Gene Deletion Mutation of Pasteurella multocida on Hemorrhagic Sepsis in Qinghai Yak. Vet Sci 2023; 10:vetsci10030221. [PMID: 36977260 PMCID: PMC10055848 DOI: 10.3390/vetsci10030221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
OmpH is among the most important virulence factors of Pasteurella multocida, which mediates septicemia in yaks (Bos grunniens I) after infection with the bacteria. In the present study, yaks were infected with wild-type (WT) (P0910) and OmpH-deficient (ΔOmpH) P. multocida strains. The mutant strain was generated through the reverse genetic operation system of pathogens and proteomics technology. The live-cell bacterial count and clinical manifestations of P. multocida infection in Qinghai yak tissues (thymus, lung, spleen, lymph node, liver, kidney, and heart) were analyzed. The expression of differential proteins in the yak spleen under different treatments was analyzed using the marker-free method. We found that compared with the mutant strain, the titer of wild-type strains was significantly higher in tissues. Additionally, compared with other organs, the bacteria titer was significantly higher in the spleen. Compared with the WT p0910 strain, the mutant strain generated milder pathological changes in the tissues of yak. Proteomics analysis revealed that 57 of the 773 proteins expressed in P. multocida were significantly differentially expressed between the ΔOmpH and P0910 groups. Of the 57, 14 were over-expressed, whereas 43 were under-expressed. The differentially expressed proteins in the ΔompH group regulated the ABC transporter (ATP-powered translocation of many substrates across membranes) system, the two-component system, RNA degradation, RNA transcription, glycolysis/gluconeogenesis, biosynthesis of ubiquinone and other terpenoid-quinones, oxidative phosphorylation (citrate cycle) as well as fructose and mannose metabolism. The relationship among 54 significantly regulated proteins was analyzed using STRING. We found that WT P0910 and ΔOmpH of P. multocida infection activated the expression of ropE, HSPBP1, FERH, ATP10A, ABCA13, RRP7A, IL-10, IFN-γ, IL-17A, EGFR, and dnaJ. Overall, deletion of the OmpH gene weakened the virulence but maintained the immunogenicity of P. multocida in yak. The findings of this study provide a strong foundation for the pathogenesis of P. multocida and the management of related septicemia in yaks.
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Affiliation(s)
- Jianlei Jia
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
- School of Life Sciences, Qilu Normal University, Jinan 250200, China
| | - Meng Zhao
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Kairu Ma
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Hongjian Zhang
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Linsheng Gui
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Huzhi Sun
- Qingdao Phagepharm Bio-Tech Co., Ltd., Qingdao 266109, China
| | - Huiying Ren
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Tamaki Okabayashi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Jing Zhao
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
- Correspondence:
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7
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Pmorf0222, a Virulence Factor in Pasteurella multocida, Activates Nuclear Factor Kappa B and Mitogen-Activated Protein Kinase via Toll-Like Receptor 1/2. Infect Immun 2023; 91:e0019322. [PMID: 36541752 PMCID: PMC9872710 DOI: 10.1128/iai.00193-22] [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: 12/24/2022] Open
Abstract
Pasteurella multocida primarily causes hemorrhagic septicemia and pneumonia in poultry and livestock. Identification of the relevant virulence factors is therefore essential for understanding its pathogenicity. Pmorf0222, encoding the PM0222 protein, is located on a specific prophage island of the pathogenic strain C48-1 of P. multocida. Its role in the pathogenesis of P. multocida infection is still unknown. The proinflammatory cytokine plays an important role in P. multocida infection; therefore, murine peritoneal exudate macrophages were treated with the purified recombinant PM0222, which induced the secretion of tumor necrosis factor alpha (TNF-α) and interleukin-1β (IL-1β) via the Toll-like receptor 1/2 (TLR1/2)-nuclear factor kappa B (NF-κB)/mitogen-activated protein kinase (MAPK) signaling and inflammasome activation. Additionally, the mutant strain and complemented strain were evaluated in the mouse model with P. multocida infection, and PM0222 was identified as a virulence factor, which was secreted by outer membrane vesicles of P. multocida. Further results revealed that Pmorf0222 affected the synthesis of the capsule, adhesion, serum sensitivity, and biofilm formation. Thus, we identified Pmorf0222 as a novel virulence factor in the C48-1 strain of P. multocida, explaining the high pathogenicity of this pathogenic strain.
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Wu X, Zeng Z, Tian H, Peng L, Xu D, Wang Y, Ye C, Peng Y, Fang R. The important role of NLRP6 inflammasome in Pasteurella multocida infection. Vet Res 2022; 53:81. [PMID: 36224650 PMCID: PMC9558406 DOI: 10.1186/s13567-022-01095-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 07/27/2022] [Indexed: 11/10/2022] Open
Abstract
Pasteurella multocida (P. multocida) can cause severe respiratory disease in cattle, resulting in high mortality and morbidity. Inflammasomes are multiprotein complexes in the cytoplasm that recognize pathogens and play an important role in the host defense against microbial infection. In this study, the mechanism of P. multocida-induced NLRP6 inflammasome activation was investigated in vitro and in vivo. Firstly, P. multocida induced severe inflammation with a large number of inflammatory cells infiltrating the lungs of WT and Nlrp6−/− mice. Nlrp6−/− mice were more susceptible to P. multocida infection and they had more bacterial burden in the lungs. Then, the recruitment of macrophages and neutrophils in the lungs was investigated and the results show that the number of immune cells was significantly decreased in Nlrp6−/− mice. Subsequently, NLRP6 was shown to regulate P. multocida-induced inflammatory cytokine secretion including IL-1β and IL-6 both in vivo and in vitro while TNF-α secretion was not altered. Moreover, NLRP6 was found to mediate caspase-1 activation and ASC oligomerization, resulting in IL-1β secretion. Furthermore, NLRP6 inflammasome mediated the gene expression of chemokines including CXCL1, CXCL2 and CXCR2 which drive the activation of NLRP3 inflammasomes. Finally, NLRP3 protein expression was detected to be abrogated in P. multocida-infected Nlrp6−/− macrophages, indicating the synergic effect of NLRP6 and NLRP3. Our study demonstrates that NLRP6 inflammasome plays an important role in the host against P. multocida infection and contributes to the development of immune therapeutics against P. multocida.
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Affiliation(s)
- Xingping Wu
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Zheng Zeng
- Chongqing Centers for Disease Control and Prevention, Chongqing, 401120, China
| | - Hongliang Tian
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Lianci Peng
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Dongyi Xu
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Yu Wang
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Chao Ye
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Yuanyi Peng
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China.
| | - Rendong Fang
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, 400715, China. .,Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, 402460, China. .,Chongqing Key Laboratory of Herbivore Science, Chongqing, 400715, China.
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9
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Wang Y, Zeng Z, Ran J, Peng L, Wu X, Ye C, Dong C, Peng Y, Fang R. The Critical Role of Potassium Efflux and Nek7 in Pasteurella multocida-Induced NLRP3 Inflammasome Activation. Front Microbiol 2022; 13:849482. [PMID: 35350616 PMCID: PMC8957907 DOI: 10.3389/fmicb.2022.849482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/14/2022] [Indexed: 11/16/2022] Open
Abstract
Pasteurella multocida is a zoonotic pathogen causing respiratory infection in different animal species such as cattle, sheep, pigs, chickens and humans. Inflammasome is a complex assembled by multiple proteins in the cytoplasm and plays an important role in the host defense against microbial infection. Bovine Pasteurella multocida type A (PmCQ2) infection induces NLRP3 inflammasome activation and IL-1β secretion, but the mechanism of PmCQ2-induced activation of NLRP3 inflammasome is still unknown. Therefore, the underlying mechanism was investigated in this study. The results showed that potassium efflux mediated PmCQ2-induced IL-1β secretion and blocking potassium efflux attenuated PmCQ2-induced caspase-1 activation and ASC oligomerization. Furthermore, NIMA-related kinase 7 (Nek7) was also involved in PmCQ2-induced caspase-1 activation and IL-1β secretion. In addition, PmCQ2 infection promoted Nek7-NLRP3 interaction, which is dependent on potassium efflux. In conclusion, our results indicate the critical role of potassium efflux and Nek7 in Pasteurella multocida-induced NLRP3 inflammasome activation, which provides useful information about Pasteurella multocida-induced host immune response.
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Affiliation(s)
- Yu Wang
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Zheng Zeng
- Chongqing Animal Disease Prevention and Control Center, Chongqing, China
| | - Jinrong Ran
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Lianci Peng
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Xingping Wu
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Chao Ye
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Chunxia Dong
- Chongqing Animal Disease Prevention and Control Center, Chongqing, China
| | - Yuanyi Peng
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China.,Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.,Chongqing Key Laboratory of Herbivore Science, Chongqing, China
| | - Rendong Fang
- Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China.,Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.,Chongqing Key Laboratory of Herbivore Science, Chongqing, China
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10
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Couto MR, Rodrigues JL, Rodrigues LR. Heterologous production of chondroitin. BIOTECHNOLOGY REPORTS 2022; 33:e00710. [PMID: 35242620 PMCID: PMC8858990 DOI: 10.1016/j.btre.2022.e00710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/17/2022] [Accepted: 02/08/2022] [Indexed: 01/01/2023]
Abstract
Chondroitin sulfate (CS) is a glycosaminoglycan with a growing variety of applications. CS can be produced from microbial fermentation of native or engineered strains. Synthetic biology tools are being used to improve CS yields in different hosts. Integrated polymerization and sulfation can generate cost-effective CS.
Chondroitin sulfate (CS) is a glycosaminoglycan with a broad range of applications being a popular dietary supplement for osteoarthritis. Usually, CS is extracted from animal sources. However, the known risks of animal products use have been driving the search for alternative methods and sources to obtain this compound. Several pathogenic bacteria naturally produce chondroitin-like polysaccharides through well-known pathways and, therefore, have been the basis for numerous studies that aim to produce chondroitin using non-pathogenic hosts. However, the yields obtained are not enough to meet the high demand for this glycosaminoglycan. Metabolic engineering strategies have been used to construct improved heterologous hosts. The identification of metabolic bottlenecks and regulation points, and the screening for efficient enzymes are key points for constructing microbial cell factories with improved chondroitin yields to achieve industrial CS production. The recent advances on enzymatic and microbial strategies to produce non-animal chondroitin are herein reviewed. Challenges and prospects for future research are also discussed.
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Affiliation(s)
- Márcia R. Couto
- Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS – Associate Laboratory, Braga, Guimarães, Portugal
| | - Joana L. Rodrigues
- Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS – Associate Laboratory, Braga, Guimarães, Portugal
- Corresponding author.
| | - Lígia R. Rodrigues
- Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS – Associate Laboratory, Braga, Guimarães, Portugal
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11
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Zhan L, Zhang J, Zhao B, Li X, Zhang X, Hu R, Elken EM, Kong L, Gao Y. Genomic and Transcriptomic Analysis of Bovine Pasteurella multocida Serogroup A Strain Reveals Insights Into Virulence Attenuation. Front Vet Sci 2021; 8:765495. [PMID: 34859092 PMCID: PMC8631534 DOI: 10.3389/fvets.2021.765495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 09/15/2021] [Indexed: 11/13/2022] Open
Abstract
Pasteurella multocida is one of the primary pathogens of bovine respiratory disease (BRD), and causes huge losses in the cattle industry. The Pm3 strain was a natural isolate, which is a strong form of pathogen and is sensitive to fluoroquinolones antibiotics. A high fluoroquinolone resistant strain, Pm64 (MIC = 64 μg/mL), was formed after continuous induction with subinhibitory concentration (1/2 MIC) of enrofloxacin, with the enhanced growth characteristics and large attenuation of pathogenicity in mice. This study reports the whole genome sequence and the transcription profile by RNA-Seq of strain Pm3/Pm64. The results showed an ineffective difference between the two strains at the genome level. However, 32 genes could be recognized in the gene islands (GIs) of Pm64, in which 24 genes were added and 8 genes were lost. Those genes are involved in DNA binding, trehalose metabolism, material transportation, capsule synthesis, prophage, amino acid metabolism, and other functions. In Pm3 strain, 558 up-regulated and 568 down-regulated genes were found compared to Pm64 strain, from which 20 virulence factor-related differentially expressed genes (DEGs) were screened. Mainly differentially transcribed genes were associated with capsular polysaccharide (CPS), lipopolysaccharide (LPS), lipooligosaccharide (LOS). Iron utilization, and biofilm composition. We speculated that the main mechanism of virulence attenuation after the formation of resistance of Pm64 comes from the change of the expression profile of these genes. This report elucidated the toxicity targets of P. multocida serogroup A which provide fundamental information toward the understanding of the pathogenic mechanism and to decreasing antimicrobial drugs resistance.
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Affiliation(s)
- Li Zhan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Jiaqi Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Boyu Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Xintian Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Xiqing Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Renge Hu
- Marine College, Shandong University, Weihai, China
| | - Emad Mohammed Elken
- Animal Production Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Lingcong Kong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China.,The Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yunhang Gao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China.,The Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China
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12
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Fu S, Zhou Y, Qiu Y, Chen W, Zhang J, Miao J. Immune response variations and intestinal flora changes in mastitis induced by three Streptococcus uberis strains. Microbiol Immunol 2021; 66:113-123. [PMID: 34842300 DOI: 10.1111/1348-0421.12955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 11/18/2021] [Accepted: 11/24/2021] [Indexed: 11/30/2022]
Abstract
Streptococcus uberis is a common cause of mastitis. The pathogenicity among different strains of S. uberis and the resultant host immune responses remain to be elucidated. Herein, we document immune responses among three strains of S. uberis, and preliminary explore whether and how intestinal immunity plays a role in host anti-infection processes. Mice have been proved to be effective experimental animals for bovine mastitis, so utilizing a mouse intramammary infection model, we assay immune responses and gut flora changes of three S. uberis strains by histopathologic examination, RT-PCR, Western blot, and 16s ribosomal DNA sequencing. We find that the immune responses among the three sequence-type (ST) S. uberis strains may be linked to the hasA/B and lbp virulence genes, and the beta diversity of the intestine may be independent of the ST of S. uberis. Twenty phyla and 30 genera of intestinal flora were identified, with Verrucomicrobia and Akkermansia being the most prominent phylum and genus, respectively. These bacteria have strong anti-inflammatory and protective effects against S. uberis challenge. These data provide a foundation for further studies to elucidate gut flora function and exploration of therapeutic targets for mastitis.
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Affiliation(s)
- Shaodong Fu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yuanyuan Zhou
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yawei Qiu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Wei Chen
- Engineering Laboratory of Tarim Animal Diseases Diagnosis and Control, Xinjiang Production and Construction Crops, College of Animal Science, Tarim University, Tarim, China
| | - Jinqiu Zhang
- National Research Center for Veterinary Vaccine Engineering and Technology of China, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Jinfeng Miao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
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13
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Xiao J, Li Y, Hu Z, Zhang Y, Chang YF, Zhou Q, Yan Z, Zhang X, Chen L, Li W, Xie Z, Xie Q. Characterization of Pasteurella multocida isolated from ducks in China from 2017 to 2019. Microb Pathog 2021; 160:105196. [PMID: 34534643 DOI: 10.1016/j.micpath.2021.105196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/11/2021] [Accepted: 09/12/2021] [Indexed: 02/02/2023]
Abstract
Pasteurella multocida, an important gram-negative pathogen that mainly inhibits the upper respiratory tracts of domestic and wild animals such as chicken, duck, cattle and pig, which can cause cholera fowl, haemorrhagic septicaemia and infectious pneumonia. Currently, the prevalence and infection of P.multocida is still one of the most serious threats to the poultry industry in China, but studies on its characteristics are still insufficient. Here, this study was conducted to isolate and identify P.multocida in infected ducks and determined the leading serotypes and epidemiology of the diseases this pathogen causes. Results indicated that all the isolates were positive for KMT1 gene and the PCR amplified products were approximately 460 bp, demonstrating that these strains were all P.multocida. Moreover, all the isolated strains were identified as capsular type A and lipopolysaccharide type L1. Virulence factor identification results revealed that all strains possessed genes related to pili, adhesin, iron metabolism and uptake. In contrast, toxin coding gene (toxA) and sialidase encodes genes (nan B and nan H) were not detected in any isolates. The drug susceptibility results indicated that all the isolates were resistant to Lincomycin, Chloramphenicol, Clindamycin and Oxacillin but were sensitive to Ceftriaxone and Cefalotin. The animal experiments were also performed to further determine the pathogenicity of these isolated strains. Animal experiment revealed that the liver, kidney, and heart of infected ducks were swollen and had bleeding spots. We also observed hepatocyte hypertrophy, hepatic sinus congestion and single-cell infiltration in infected ducks through H&E staining. In summary, this study demonstrated that all the isolated strains belong to capsular A and lipopolysaccharide type L1 P.multocida, but their virulence factors, drug resistance and pathogenicity were different.
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Affiliation(s)
- Junfang Xiao
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yajuan Li
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zezhong Hu
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yukun Zhang
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yung-Fu Chang
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Qingfeng Zhou
- Research Institute, Wen's Food Group Co., LTD, Yunfu, China
| | - Zhuanqiang Yan
- Research Institute, Wen's Food Group Co., LTD, Yunfu, China
| | - Xinheng Zhang
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Liyi Chen
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Wenxue Li
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zi Xie
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qingmei Xie
- College of Animal Science, South China Agricultural University, Guangzhou, China.
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