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Sun L, Zhao N, Li H, Wang B, Li H, Zhang X, Zhao X. Construction of a Lactobacillus plantarum-based claudin-3 targeting delivery system for the development of vaccines against Eimeria tenella. Vaccine 2023; 41:756-765. [PMID: 36526500 DOI: 10.1016/j.vaccine.2022.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/06/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Avian coccidiosis causes huge economic losses to the poultry industry worldwide and currently lacks effective live vector vaccines. Achieving efficient antigen delivery to mucosa-associated lymphoid tissue (MALT) is critical for improving the effectiveness of vaccines. Here, chicken claudin-3 (CLDN3), a tight junction protein expressed in MALT, was identified as a target, and the C-terminal region of Clostridium perfringens enterotoxin (C-CPE) was proven to bind to chicken CLDN3. Then, a CLDN3-targeting Lactobacillus plantarum NC8-expressing C-CPE surface display system (NC8/GFP-C-CPE) was constructed to successfully express the heterologous protein on the surface of L. plantarum. The colonization level of NC8/GFP-C-CPE was significantly increased compared to the non-targeting strain and could persist in the intestine for at least 72 h. An oral vaccine strain expressing five EGF domains of Eimeria tenella microneme protein 8 (EtMIC8-EGF) (NC8/EtMIC8-EGF-C-CPE) was constructed to evaluate the protective efficacy against E. tenella infection. The results revealed that CLDN3-targeting L. plantarum induced stronger mucosal immunity in gut-associated lymphoid tissues (GALT) as well as humoral responses and conferred better protection in terms of parasite replication and pathology than the non-targeting strain. Overall, we successfully constructed a CLDN3-targeting L. plantarum NC8 surface display system characterized by MALT-targeting, which is an efficient antigen delivery system to confer enhanced protective efficacy in chickens against E. tenella infection.
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Affiliation(s)
- Lingyu Sun
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China
| | - Ningning Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China
| | - Huihui Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China
| | - Bingxiang Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China
| | - Hongmei Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China
| | - Xiao Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China.
| | - Xiaomin Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an City, Shandong Province, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an City, Shandong Province, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China.
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2
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Li X, Jiang X, Qi D, Wang X, Wang C, Fei C, Zhou W, Li J, Zhang K. Effects of ethanamizuril, sulfachlorpyridazine or their combination on cecum microbial community and metabolomics in chickens infected with Eimeria tenella. Microb Pathog 2022; 173:105823. [DOI: 10.1016/j.micpath.2022.105823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/30/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022]
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Yang X, Song X, Liu J, Chen Q, An T, Liu Q. Protection of hatchlings against coccidiosis by maternal antibodies to four recombinant proteins of Eimeria tenella, Eimeria acervulina and Eimeria maxima. Vet Parasitol 2022; 312:109813. [PMID: 36343529 DOI: 10.1016/j.vetpar.2022.109813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
Maternally derived IgG antibodies to protective Eimeria antigens have great potential to control chicken coccidiosis and multivalent vaccines are more practical to resist against co-infection with several species of Eimeria under natural conditions. In this study, five good protective antigens of Eimeria species were combined into two combinations based on previous studies, namely C1(EtROPK-Eten5-A, EtGAM22, Ea3-1E and EmGAM56) and C2(EtM2AP and EtGAM22, Ea3-1E and EmGAM56). Then, five antigens were expressed in the Escherichia coli system and purified to inoculate breeding hens. After three times immunization, the specific antibodies could sustain for 11 and 10 weeks in hens' plasma and egg yolk, respectively. Moreover, maternally derived antibodies against recombinant proteins could retain for 14 days in hatchlings' serum. Then, protective efficacies of specific antibodies on hatchlings against mixed infection of E. tenella, E. acervulina and E. maxima were evaluated. The results showed that the hatchlings of the immunized hens had a higher survival rate on day 7 of hatching. Moreover, body weight gains within the hatchlings of immunized hens were higher than those of unvaccinated hens on 7 days (C1: p = 0.0744; C2: p = 0.4020) and 14 days (p < 0.0001). Moreover, hatchlings from vaccinated hens showed significantly alleviated lesion scores in the small intestine and duodenum at day 7 (p < 0.01) and day 14 (C1: p < 0.05). Particularly, the number of oocyst excretion from hatchlings of immunized hens was significantly reduced at day 7 (p < 0.0001) and day 14 (p < 0.0001). Our findings suggest that the maternal immunization with multivalent recombinant vaccines has the potential to be transmission blocking vaccines against mixed infection of Eimeria.
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Affiliation(s)
- Xu Yang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China.
| | - Xingju Song
- College of Animal Science and Technology, Guangxi University, Nanning 530004, PR China.
| | - Jing Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China.
| | - Qingzhong Chen
- HLINTE Biological Technology Company, Tianjin 301702, PR China.
| | - Tongwei An
- HLINTE Biological Technology Company, Tianjin 301702, PR China.
| | - Qun Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China.
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4
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Zhi W, Chen H, Bai B, Jia Z, Pan X, Wang B, Kong R, Liu Q, Ma C, Ma D. Combined oral immunization with probiotics Entercoccus faecalis delivering surface-anchored Eimeria tenella proteins provide protective efficacies against homologous infection in chickens. Front Immunol 2022; 13:1042143. [PMID: 36311704 PMCID: PMC9606674 DOI: 10.3389/fimmu.2022.1042143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Objectives Avian coccidiosis is an intestinal parasitic disease exerting a highly negative impact on the global poultry industry. The aim of the present study is to evaluate the immune protective efficacies against Eimeria tenella infection in chickens orally immunized with combined recombinant probiotics Entercoccus faecalis (E. faecalis) delivering surface-anchored E. tenella proteins. Methods Four kinds of novel probiotics vaccines that surface-expressing four Eimeria tenella (E. tenella) proteins EtAMA1, EtIMP1, EtMIC2 and Et3-1E were produced, respectively. The expression of four target proteins on the surface of recombinant bacteria was detected by Western blot and indirect immunofluorescence assay (IFA). Then the four kinds of recombinant E. faecalis were combined to immunize chickens via oral route in different combinations. The immunizations were performed three times at two-week intervals, and each for three consecutive days. After immunizations, chickens in each immunized group were orally challenged with E. tenella sporulated oocysts. The immune responses and protective efficacies against homologous infection were evaluated. Results The results showed that three or four live recombinant E. faecalis induced effective antigen-specific humoral, intestinal mucosal immune responses, stimulated peripheral T lymphocytes proliferation, and displayed partial protections against homologous challenge as measured by cecal lesions, oocyst shedding, and body weight gain (BWG). Notably, higher levels of protective efficacies were observed when the four recombinant E. faecalis delivering target proteins were combined. Conclusion Chickens orally administrated with three or four, especially the four combined recombinant E. faecalis stimulated specific immune responses, which provided anti-coccidial effects. This study offers an idea for future development of novel vaccines based on multi-antigens delivered by probiotic bacteria.
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Affiliation(s)
- Wenjing Zhi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Hang Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Bingrong Bai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Zhipeng Jia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xinghui Pan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Biao Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Rui Kong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Qiuju Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Chunli Ma
- College of Food Science, Northeast Agricultural University, Harbin, China
- *Correspondence: Dexing Ma, ; Chunli Ma,
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- *Correspondence: Dexing Ma, ; Chunli Ma,
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Al-Sayed SE, Abdel-Latif M, Abdel-Haleem HM, El-Shahawy G, Abdel-Tawab H. Therapeutic effects of Hirudo medicinalis extract antigens on modulation of CD4 +CD25 +Foxp3 T cell activity in murine eimeriosis. Vet Parasitol 2022; 309:109772. [PMID: 35917641 DOI: 10.1016/j.vetpar.2022.109772] [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: 03/31/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 10/16/2022]
Abstract
Eimeriosis is a common parasitic disease in the chicken industry. The aim of this study was to assess the protective role of Hirudo extract antigens (HEA) against murine eimeriosis induced by Eimeria papillate. The oocyst output, developmental stages, goblet cells and oxidative stress, were investigated. Immunohistochemistry was used to detect anti-apoptotic Bcl2 marker and the number of both CD4+ and CD25+ cells in jejunal tissue, while ELISA was used to quantify TGF-β, IL-10 and IL-22 in jejunal tissue homogenate. Real-time PCR was also used to detect mRNA expression of mucin 2 (MUC2), inducible nitric oxide synthase (iNOS), IL-1β, IFN-γ, TNF-α, IL-6, and FoxP3. The most effective dose (5 µg/mice) reduced the oocyst output by 82.95 ± 1.02% (P ˂ 0.001). Similarly, the same dose reduced the jejunal developmental stages by 66.67 ± 0.49% (P ˂ 0.001). Furthermore, HEA therapy increased the number of jejunal goblet cells by 12.8 ± 1 (P ˂ 0.001) and the expression of MUC2 by 0.83 ± 0.06 (P ˂ 0.001). In contrast, TNF-α, IFN-γ, IL-6, iNOS, and IL-1β expression as well as apoptosis were reduced. The number of CD4+ and CD25+ in the jejunal tissue was increased (14.6 ± 1.2 (P ˂ 0.001), 6.84 ± 1 (P ˂ 0.01), respectively) after HEA therapy. The molecular analysis showed an increased expression of intestinal Foxp3 (3.2 ± 0.13 (P ˂ 0.001), while IL-22 was reduced (124 ± 10 (P ˂ 0.001)) versus an increase in TGF-β (250 ± 17 (P ˂ 0.01)) and IL-10 (236 ± 16 (P ˂ 0.001)) after HEA treatment in comparison to the non-treated infected group. With respect to the infected group, HEA reduced lipid peroxidation (LPO) (15.7 ± 1.12 (P ˂ 0.001)) and nitric oxide (NO) (13 ± 1.3 (P ˂ 0.001)) but increased reduced glutathione (GSH) (3.7 ± 0.26 (P ˂ 0.001)). In conclusion, HEA therapy protected against intestinal tissue damage by activation of CD4+CD25+Foxp3 cells which showed anti-inflammatory action. Hence, HEA can be recommended as a therapeutic treatment for eimeriosis.
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Affiliation(s)
- Shrouk E Al-Sayed
- Division of Parasitology, Zoology Department, Faculty of Science, Beni-Suef University, Egypt.
| | - Mahmoud Abdel-Latif
- Division of Immunity, Zoology Department, Faculty of Science, Beni-Suef University, Egypt
| | - Heba M Abdel-Haleem
- Division of Parasitology, Zoology Department, Faculty of Science, Beni-Suef University, Egypt
| | - Gamal El-Shahawy
- Division of Parasitology, Zoology Department, Faculty of Science, Beni-Suef University, Egypt
| | - Heba Abdel-Tawab
- Division of Parasitology, Zoology Department, Faculty of Science, Beni-Suef University, Egypt
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Zaheer T, Abbas RZ, Imran M, Abbas A, Butt A, Aslam S, Ahmad J. Vaccines against chicken coccidiosis with particular reference to previous decade: progress, challenges, and opportunities. Parasitol Res 2022; 121:2749-2763. [PMID: 35925452 PMCID: PMC9362588 DOI: 10.1007/s00436-022-07612-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/24/2022] [Indexed: 11/29/2022]
Abstract
Chicken coccidiosis is an economically significant disease of commercial chicken industry accounting for losses of more than £10.4 billion (according to 2016 prices). Additionally, the costs incurred in prophylaxis and therapeutics against chicken coccidiosis in developing countries (for instance Pakistan according to 2018 prices) reached US $45,000.00 while production losses for various categories of chicken ranges 104.74 to US $2,750,779.00. The infection has been reported from all types of commercial chickens (broiler, layer, breeder) having a range of reported prevalence of 7-90%. The concern of resistance towards major anticoccidials has provided a way forward to vaccine research and development. For prophylaxis of chicken coccidiosis, live virulent, attenuated, ionophore tolerant strains and recombinant vaccines have been extensively trialed and commercialized. Eimeria antigens and novel vaccine adjuvants have elicited the protective efficacy against coccidial challenge. The cost of production and achieving robust immune responses in birds are major challenges for commercial vaccine production. In the future, research should be focused on the development of multivalent anticoccidial vaccines for commercial poultry. Efforts should also be made on the discovery of novel antigens for incorporation into vaccine designs which might be more effective against multiple Eimeria species. This review presents a recap to the overall progress against chicken Eimeria with particular reference to previous decade. The article presents critical analysis of potential areas for future research in chicken Eimeria vaccine development.
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Affiliation(s)
- Tean Zaheer
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Rao Zahid Abbas
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan.
| | - Muhammad Imran
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Asghar Abbas
- Faculty of Veterinary Science, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
| | - Ali Butt
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Sarfraz Aslam
- Institute of Physiology, Pharmacology and Pharmaceutics, University of Agriculture, Faisalabad, Pakistan
| | - Jameel Ahmad
- Institute of Physiology, Pharmacology and Pharmaceutics, University of Agriculture, Faisalabad, Pakistan
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Nasri T, Sangmaneedet S, Nam NH, Worawong K, Taweenan W, Sukon P. Protective efficacy of new-generation anticoccidial vaccine candidates against Eimeria infection in chickens: A meta-analysis of challenge trials. Vet Parasitol 2022; 306:109724. [DOI: 10.1016/j.vetpar.2022.109724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 12/09/2022]
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Song X, Yang X, Zhang T, Liu J, Liu Q. Evaluation of 4 merozoite antigens as candidate vaccines against Eimeria tenella infection. Poult Sci 2020; 100:100888. [PMID: 33516468 PMCID: PMC7936139 DOI: 10.1016/j.psj.2020.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 11/17/2020] [Accepted: 12/01/2020] [Indexed: 01/24/2023] Open
Abstract
Coccidiosis, caused by parasites of the genus Eimeria, is one of the most widespread and economically detrimental diseases in the global poultry industry. Because the merozoite stage of Eimeria tenella is immunologically vulnerable, motile, and functionally important for the parasites, the proteins expressed in these stages are considered to be potentially immunoprotective antigens, especially the secreted antigens and surface antigens. Here, we detected a previously unidentified MIC2-associated protein (Et-M2AP) from E. tenella and determined its localization. An immunofluorescence assay revealed that Et-M2AP was distributed in the apical part of second generation merozoites and sporozoites. In addition, an expression profile analysis revealed that the transcriptional level of Et-M2AP is significantly higher in the merozoite stage. To assess the potential of Et-M2AP protein as a coccidiosis vaccine, we expressed recombinant Et-M2AP (rEt-M2AP) and compared the immune protective efficacy of rEt-M2AP with 3 surface antigens that are highly expressed by merozoites (rEt-SAG23, rEt-SAG16, and rEt-SAG2 proteins). The immune protective efficacy of these vaccine candidates was assessed based on survival rate, lesion score, BW gain, relative BW gain, and oocyst output. The results show that the survival rate was 90%, which are significantly higher than those in the challenge control group. The BW gain rate was 42% (P < 0.001) in rEt-M2AP-immunized chickens, which are significantly higher than those in the challenge control group and rEt-SAG23, rEt-SAG16, and rEt-SAG2 proteins-immunized chickens. In addition, chickens immunized with rEt-M2AP (88% oocyst output decrease rate, P < 0.001) had the least oocyst output, compared with those immunized with rEt-SAG16 (59.2% oocyst output decrease rate, P < 0.001), rEt-SAG23 (22% oocyst output decrease rate), and rEt-SAG2 (1.36% oocyst output decrease rate). These results demonstrate that rEt-M2AP provided effective protection against challenge with E. tenella, suggesting that rEt-M2AP is a promising candidate antigen gene for development as a coccidiosis vaccine.
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Affiliation(s)
- Xingju Song
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xu Yang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Taotao Zhang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jing Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Qun Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China.
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Mtshali SA, Adeleke MA. A review of adaptive immune responses to Eimeria tenella and Eimeria maxima challenge in chickens. WORLD POULTRY SCI J 2020. [DOI: 10.1080/00439339.2020.1833693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. A. Mtshali
- Discipline of Genetics, School of Life Sciences, University of Kwa-Zulu Natal, Durban, South Africa
| | - M. A. Adeleke
- Discipline of Genetics, School of Life Sciences, University of Kwa-Zulu Natal, Durban, South Africa
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Kong W, Wang X, Fields E, Okon B, Jenkins MC, Wilkins G, Brovold M, Golding T, Gonzales A, Golden G, Clark-Curtiss J, Curtiss R. Mucosal Delivery of a Self-destructing Salmonella-Based Vaccine Inducing Immunity Against Eimeria. Avian Dis 2020; 64:254-268. [PMID: 33112952 DOI: 10.1637/aviandiseases-d-19-00159] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 03/09/2019] [Indexed: 11/05/2022]
Abstract
A programmed self-destructive Salmonella vaccine delivery system was developed to facilitate efficient colonization in host tissues that allows release of the bacterial cell contents after lysis to stimulate mucosal, systemic, and cellular immunities against a diversity of pathogens. Adoption and modification of these technological improvements could form part of an integrated strategy for cost-effective control and prevention of infectious diseases, including those caused by parasitic pathogens. Avian coccidiosis is a common poultry disease caused by Eimeria. Coccidiosis has been controlled by medicating feed with anticoccidial drugs or administering vaccines containing low doses of virulent or attenuated Eimeria oocysts. Problems of drug resistance and nonuniform administration of these Eimeria resulting in variable immunity are prompting efforts to develop recombinant Eimeria vaccines. In this study, we designed, constructed, and evaluated a self-destructing recombinant attenuated Salmonella vaccine (RASV) lysis strain synthesizing the Eimeria tenella SO7 antigen. We showed that the RASV lysis strain χ11791(pYA5293) with a ΔsifA mutation enabling escape from the Salmonella-containing vesicle (or endosome) successfully colonized chicken lymphoid tissues and induced strong mucosal and cell-mediated immunities, which are critically important for protection against Eimeria challenge. The results from animal clinical trials show that this vaccine strain significantly increased food conversion efficiency and protection against weight gain depression after challenge with 105E. tenella oocysts with concomitant decreased oocyst output. More importantly, the programmed regulated lysis feature designed into this RASV strain promotes bacterial self-clearance from the host, lessening persistence of vaccine strains in vivo and survival if excreted, which is a critically important advantage in a vaccine for livestock animals. Our approach should provide a safe, cost-effective, and efficacious vaccine to control coccidiosis upon addition of additional protective Eimeria antigens. These improved RASVs can also be modified for use to control other parasitic diseases infecting other animal species.
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Affiliation(s)
- Wei Kong
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Xiao Wang
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Emilia Fields
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Blessing Okon
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Mark C Jenkins
- Animal Parasitic Diseases Laboratory, the Agricultural Research Service, USDA, Beltsville, MD 20705-2359
| | - Gary Wilkins
- Animal Parasitic Diseases Laboratory, the Agricultural Research Service, USDA, Beltsville, MD 20705-2359
| | - Matthew Brovold
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Tiana Golding
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Amanda Gonzales
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Greg Golden
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
| | - Josephine Clark-Curtiss
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-5401
- Division of Infectious Diseases and Global Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL 32610
| | - Roy Curtiss
- Center for Infectious Diseases and Vaccinology, Biodesign Institute, Arizona State University, Tempe, AZ 85287-5401
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-5401
- Department of Infectious Diseases & Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611
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11
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Adhikari P, Kiess A, Adhikari R, Jha R. An approach to alternative strategies to control avian coccidiosis and necrotic enteritis. J APPL POULTRY RES 2020. [DOI: 10.1016/j.japr.2019.11.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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12
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Chen W, Ma C, Wang D, Li G, Ma D. Immune response and protective efficacy of recombinant Enterococcus faecalis displaying dendritic cell-targeting peptide fused with Eimeria tenella 3-1E protein. Poult Sci 2020; 99:2967-2975. [PMID: 32475431 PMCID: PMC7597732 DOI: 10.1016/j.psj.2020.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/30/2020] [Accepted: 03/09/2020] [Indexed: 11/25/2022] Open
Abstract
Avian coccidiosis causes significant economic losses on the global poultry breeding industry. Exploration of new-concept vaccines against coccidiosis has gradually become a research hotspot. In this study, an Enterococcus faecalis strain (MDXEF-1) showing excellent performance isolated from chicken intestinal tract was used as a vector to deliver Eimeria target protein. The plasmid pTX8048-SP-DCpep-NAΔ3-1E-CWA harboring dendritic cell–targeting peptide (DCpep) fusion with Eimeria tenella NAΔ3-1E gene (3-1E protein–coding gene without start codon ATG and terminator codon TAA) was electrotransformed into MDXEF-1 to generate the recombinant bacteria MDXEF-1/pTX8048-SP-DCpep-NAΔ3-1E-CWA in which NAΔ3-1E protein was covalently anchored to the surface of bacteria cells by cell wall anchor (CWA) sequence. The expression of target fusion protein DCpep-NAΔ3-1E-CWA was detected by Western blot. Each chicken was immunized 3 times at 2-wk intervals with live E. faecalis expressing DCpep-NAΔ3-1E fusion protein (DCpep-NAΔ3-1E group), live E. faecalis expressing NAΔ3-1E protein (NAΔ3-1E group), and live E. faecalis containing empty vector only. The 3 immunized groups were then challenged with homologous E. tenella sporulated oocyst after immunizations, and the immune response and protective efficacy in each group were evaluated. The results showed that serum IgG levels, secretory IgA levels in cecal lavage, proportion of CD4+ and CD8α+ cells in peripheral blood, and mRNA expression levels of IL-2 and IFN-γ in the spleen were significantly higher in chickens in the DCpep-NAΔ3-1E group than in chickens of the NAΔ3-1E group (P < 0.05). Oral immunization to chickens with live E. faecalis expressing DCpep-NAΔ3-1E offered more protective efficacy against homologous challenge including significant improved body weight gain, increased oocyst decrease ratio, and reduced average lesion scores in cecum compared with chickens with live E. faecalis expressing NAΔ3-1E protein. These results suggest that recombinant E. faecalis expressing dendritic cell–targeting peptide fusion with E. tenella 3-1E protein could be a potential approach for prevention of Eimeria infection.
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Affiliation(s)
- Wenjing Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Experimental Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China
| | - Chunli Ma
- College of Food Science, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China
| | - Dian Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Experimental Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China
| | - Guanghao Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Experimental Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Experimental Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China.
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Li G, Ma C, Wang D, Chen W, Ma D. Recombinant Lactococcus lactis co-expressing dendritic cell target peptide and E. tenella 3-1E protein: immune response and efficacy against homologous challenge. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1733495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Guanghao Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People’s Republic of China
| | - Chunli Ma
- College of Food Science, Northeast Agricultural University, Harbin, People’s Republic of China
| | - Dian Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People’s Republic of China
| | - Wenjing Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People’s Republic of China
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People’s Republic of China
- Heilongjiang Key Laboratory for Experimental Animals and Comparative Medicine, Harbin, Heilongjiang, People’s Republic of China
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Liu Q, Jiang Y, Yang W, Liu Y, Shi C, Liu J, Gao X, Huang H, Niu T, Yang G, Wang C. Protective effects of a food-grade recombinant Lactobacillus plantarum with surface displayed AMA1 and EtMIC2 proteins of Eimeria tenella in broiler chickens. Microb Cell Fact 2020; 19:28. [PMID: 32046719 PMCID: PMC7014946 DOI: 10.1186/s12934-020-1297-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/27/2020] [Indexed: 12/12/2022] Open
Abstract
Background Avian coccidiosis posts a severe threat to poultry production. In addition to commercial attenuated vaccines, other strategies to combat coccidiosis are urgently needed. Lactobacillus plantarum has been frequently used for expression of foreign proteins as an oral vaccine delivery system using traditional erythromycin resistance gene (erm). However, antibiotic selection markers were often used during protein expression and they pose a risk of transferring antibiotic resistance genes to the environment, and significantly restricting the application in field production. Therefore, a food-grade recombinant L. plantarum vaccine candidate would dramatically improve its application potential in the poultry industry. Results In this study, we firstly replaced the erythromycin resistance gene (erm) of the pLp_1261Inv-derived expression vector with a non-antibiotic, asd-alr fusion gene, yielding a series of non-antibiotic and reliable, food grade expression vectors. In addition, we designed a dual-expression vector that displayed two foreign proteins on the surface of L. plantarum using the anchoring sequences from either a truncated poly-γ-glutamic acid synthetase A (pgsA′) from Bacillus subtilis or the L. acidophilus surface layer protein (SlpA). EGFP and mCherry were used as marker proteins to evaluate the surface displayed properties of recombinant L. plantarum strains and were inspected by western blot, flow cytometry and fluorescence microscopy. To further determine its application as oral vaccine candidate, the AMA1 and EtMIC2 genes of E. tenella were anchored on the surface of L. plantarum strain. After oral immunization in chickens, the recombinant L. plantarum strain was able to induce antigen specific humoral, mucosal, and T cell-mediated immune responses, providing efficient protection against coccidiosis challenge. Conclusions The novel constructed food grade recombinant L. plantarum strain with double surface displayed antigens provides a potential efficient oral vaccine candidate for coccidiosis.![]()
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Affiliation(s)
- Qiong Liu
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China.,College of Food Engineering, Jilin Engineering Normal University, 3050 KaiXuan Road, Changchun, 130052, Jilin, China
| | - Yanlong Jiang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Wentao Yang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Yongshi Liu
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Chunwei Shi
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Jing Liu
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Xing Gao
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Haibin Huang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Tianming Niu
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Guilian Yang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China.
| | - Chunfeng Wang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China.
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Arafa WM, Abolhadid SM, Moawad A, Abdelaty AS, Moawad UK, Shokier KAM, Shehata O, Gadelhaq SM. Thymol efficacy against coccidiosis in pigeon (Columba livia domestica). Prev Vet Med 2020; 176:104914. [PMID: 32066028 DOI: 10.1016/j.prevetmed.2020.104914] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/23/2020] [Accepted: 02/04/2020] [Indexed: 12/27/2022]
Abstract
Investigation of thymol efficacy to control pigeon coccidiosis was performed using in-vitro and in-vivo studies. The in-vitro experiment was conducted by treatment of unsporulated oocysts of Eimeria species of pigeon by five concentrations (0.625-10%) from either thymol, eucalyptus essential oil or amprolium anticoccidial drug and incubation for 72 h. The in-vitro study revealed that thymol concentrations ≥1.25 % caused significant deformity on sporulated and unsporulated oocysts compared to the other two products. Eucalyptus oil was active at both 5 and 10 % concentrations on unsporulated oocysts but showed non-significant changes on sporulated ones at all tested concentration. Meanwhile, in-vivo testing of thymol was conducted using 45 squabs which were equally divided into three groups; untreated uninfected (UU) negative control, untreated infected (UI) positive control and thymol treated (TT). TT group received 40 mg/kg BWt thymol in feed for 15 days. At day five post thymol supplementation, the UI and TT groups were orally infected by 25 × 103sporulated oocysts of pigeon Eimeria labbeana. The in-vivo study showed that thymol minimized the adverse effect of Eimeria infection in pigeon as observed by less severity of clinical signs, low oocysts count and improvement of body weight when compared with untreated infected birds. In addition, the biochemical parameters including liver and kidney functions tests proved thymol safety in pigeon. Moreover, thymol showed excellent antioxidant activity that was estimated by significantly lower value of malondialdehyde in TT than UI groups. The histopathological findings of TT group showed intact intestinal villi with mild sloughed epithelium, degenerated coccidian developmental stages and massive infiltrations of mononuclear cells in lamina propria. In conclusion, thymol can be safely used to control pigeon coccidiosis as a natural effective compound.
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Affiliation(s)
- Waleed M Arafa
- Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Shawky M Abolhadid
- Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.
| | - Abeer Moawad
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62511, Egypt
| | | | - Usama K Moawad
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | | | - Olfat Shehata
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Sahar M Gadelhaq
- Department of Parasitology, Faculty of Veterinary Medicine, Minia University, El-Minia, Egypt
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16
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Effects of Eimeria tenella infection on the barrier damage and microbiota diversity of chicken cecum. Poult Sci 2020; 99:1297-1305. [PMID: 32111306 PMCID: PMC7587721 DOI: 10.1016/j.psj.2019.10.073] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 01/03/2023] Open
Abstract
The symbiosis of host and intestinal microbiota constitutes a microecosystem and plays an important role in maintaining intestinal homeostasis and regulating the host's immune system. Eimeria tenella, an obligate intracellular apicomplexan parasite, can cause coccidiosis, a serious intestinal disease. In this study, the effects of E. tenella infection on development parameters (villus height, crypt depth, mucosa thickness, muscularis thickness, and serosa thickness) and microbiota in chicken cecum were investigated. Fourteen-day-old male Hy-Line Variety Brown layer chickens were inoculated with sporulated oocysts of E. tenella. Cecal tissues were collected 7 d after inoculation. Relative density of goblet cells and glycoproteins were determined by Alcian blue periodic acid–Schiff staining and periodic acid–Schiff staining, respectively. Intestinal development parameters were also evaluated. Cecal contents were extracted, and the composition of cecal microflora was examined by Illumine sequencing in the V3–V4 region of the 16S rRNA gene. Results indicated that E. tenella infection destroyed the structure of cecal tissue and reduced the relative density of goblet cells and glycoproteins. Sequencing analysis indicated that E. tenella infection altered the diversity and composition of cecal microbiota. The populations of Proteobacteria, Enterococcus, Incertae, and Escherichia–Shigella decreased, and those of Bacteroidales and Rikenella significantly increased in the infected group compared with those in the control group. Hence, the pathological damage caused by E. tenella infection is associated with cecal microbiota dysbiosis, and this finding may be used to develop an alternative measure for alleviating the effect of coccidiosis on the poultry industry.
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17
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El-Ashram SA, Aboelhadid SM, Gadelhaq SM, Arafa WM, Abdel-Razik ARH, Abohamra S, Abdelaziz KT. Oral inoculation of ultraviolet-irradiated Eimeria species oocysts protects chickens against coccidiosis. Parasitol Res 2019; 118:3173-3183. [PMID: 31606835 DOI: 10.1007/s00436-019-06455-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 09/04/2019] [Indexed: 11/27/2022]
Abstract
Prevention of coccidiosis is one of the best ways of controlling disease. Therefore, the present study was carried out to evaluate the protective effect of ultraviolet (UV)-irradiated sporulated oocysts of Eimeria species against coccidiosis in layer chickens. One hundred forty-four one-day-old layer chicks were randomly divided into 4 groups (n = 36), including non-immunized/non-challenged negative control group (NC group), non-immunized/challenged control group (NIC group), non-irradiated sporulated oocyst/challenged group (CA group), and UV-irradiated sporulated oocyst/challenged (UV group). At the age of 4 days, chickens in groups UV and CA were both orally inoculated with 1.0 × 104 UV-irradiated and non-irradiated sporulated oocysts of Eimeria species, respectively. Chickens in groups NIC and NC were served as positive and negative controls, respectively. Chickens in all groups were orally challenged with 7.5 × 104 sporulated oocysts of Eimeria species except the NC group at the age of 21 days. The results revealed that chicks receiving UV-irradiated sporulated oocysts had no signs of illness with minimal or no changes in the cecal integrity and a significantly lower oocyst shedding (OPG) than in the NIC group. Additionally, the cytokine gene expression profiles were evaluated. Expression levels of IL-2, IL-12, and IFN-γ were significantly higher in the spleen of chicks in the UV and CA groups than in the NC group post-challenge. As expected, treatment with irradiated oocysts resulted in a significant reduction in oocyst shedding and maintenance of cecal mucosal integrity. Furthermore, the body weight was higher in chickens inoculated with UV-irradiated oocysts than their non-irradiated counterparts. In conclusion, our results demonstrate that inoculation with UV-irradiated sporulated oocysts of Eimeria species can produce a substantial reduction in infection symptoms.
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Affiliation(s)
- Saeed A El-Ashram
- College of Life Science and Engineering, Foshan University, 18 Jiangwan Street, Foshan, 528231, Guangdong Province, China.
- Faculty of Science, Kafrelsheikh University, Kafr el-Sheikh, 33516, Egypt.
| | - Shawky M Aboelhadid
- Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt.
| | - Sahar M Gadelhaq
- Department of Parasitology, Faculty of Veterinary Medicine, Minia University, El-Minia, Egypt
| | - Walid M Arafa
- Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Abdel-Razik H Abdel-Razik
- Department of Histology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Salama Abohamra
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Khaled T Abdelaziz
- Department of pathology, Ontario Veterinary College, University of Guelph, Ontario, N1G 2W1, Canada
- Department of pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
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El-Ashram S, Aboelhadid SM, Arafa WM, Gadelhaq SM, Abdel-Razik ARH. Protective potential of diclazuril-treated oocysts against coccidiosis in layer chicks. Vet Parasitol 2019; 273:105-111. [PMID: 31473449 DOI: 10.1016/j.vetpar.2019.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 08/17/2019] [Accepted: 08/19/2019] [Indexed: 01/23/2023]
Abstract
Diclazuril, which is widely used for the prevention of coccidiosis in chickens, has a lethal effect on asexual and sexual stages of Eimeria spp. However, little is known about its effect on the exogenous stages of Eimeria spp. In this study, we evaluated the effect of in vitro treatment with 0.2% diclazuril on unsporulated and sporulated oocysts of Eimeria spp. For this purpose, a total of 180 male layer chicks aged one day were randomly divided into 5 experimental groups. Each group was divided into 3 replicates of 12 chicks each. Group 1 (G1) and Group 2 (G2) were negative (non-immunized and non-challenged) and positive (non-immunized and challenged) controls, respectively. Group 3 (G3) was immunized per os with 1.0 × 104 non-diclazuril treated-sporulated oocysts. Groups 4 (G4) was immunized per os with 0.2% diclazuril treated-unsporulated oocysts (1.0 × 104) in which diclazzuril didn't affect sporulation. Group 5 (G5) was immunized per os with 0.2% diclazuril treated-sporulated oocysts (1.0 × 104). Chicks of G2, G3, G4, and G5 were challenged with 7.5 × 104 untreated sporulated oocysts at the age of 21 days, while the group 1 chicks remained unchallenged. G4 and G5 animals immunized with 0.2% diclazuril-treated oocysts showed a significant decrease in bloody diarrhea severity, lesion scores, and oocyst counts in comparison to those immunized with untreated oocysts. Furthermore, histopathologic findings showed a low number of parasitic stages in cecal tissues in G4 and G5. A significant increased body weight gain was observed in Gs 4 and 5 in comparison to G2. In addition, expression levels of IL-2, IL-12, and IFN-γ were significantly increased in G4 and G5. In conclusion, diclazuril is effective in attenuating Eimeria oocysts and thus provides an alternative approach for using diclazuril-treated oocysts to protect chicks against Eimeria challenge.
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Affiliation(s)
- Saeed El-Ashram
- College of Life Science and Engineering, Foshan University, 18 Jiangwan Street, Foshan, 528231, Guangdong Province, China; Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, 33516, Egypt.
| | - Shawky M Aboelhadid
- Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.
| | - Waleed M Arafa
- Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Sahar M Gadelhaq
- Department of Parasitology, Faculty of Veterinary Medicine, Minia University, El-Minia, Egypt
| | - Abdel-Razik H Abdel-Razik
- Department of Histology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
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Hepato-protective effect of curcumin and silymarin against Eimeria stiedae in experimentally infected rabbits. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.01.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Immunoprophylactic evaluation of recombinant gametocyte 22 antigen of Eimeria tenella in broiler chickens. Parasitol Res 2019; 118:945-953. [PMID: 30637470 DOI: 10.1007/s00436-018-06198-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 12/28/2018] [Indexed: 12/11/2022]
Abstract
Gametocyte proteins are being explored as potential vaccine candidates against Eimeria sp. in chicken since they are the components of the resilient oocyst wall. The aim of this study was to investigate the immunoprophylactic efficacy of recombinant Eimeria tenella gametocyte antigen 22 (EtGam22) in chickens against homologous oocyst challenge. Broiler chicks were subcutaneously immunized individually with 100 μg of recombinant EtGam22 adjuvanted with Montanide ISA 71 VG at 7 days of age and boosted 2 weeks later. The immunized chickens were challenged individually with 1 × 104 sporulated oocysts of E. tenella 1 week post-booster immunization. The anti-EtGam22 IgY and serum cytokine response was measured post-immunization. The results showed that the anti-EtGam22 IgY antibody, serum IFN-γ, IL-2, TGF-β, and IL-4 levels in chickens vaccinated with recombinant protein were significantly increased post-immunization as compared to unimmunized challenged controls (P < 0.05). The peripheral blood lymphocyte proliferation activity was also found significantly higher in EtGam22-immunized group on day 28, i.e., pre-challenge (P < 0.05). Upon homologous oocyst challenge, chickens immunized with rEtGam22 exhibited a significant drop in the total oocyst output per bird (246.78 ± 36.9 × 106, 45.23% reduction) and a significantly higher weight gain (497.7 ± 19.2 g) as compared to unimmunized challenged controls. Taken together, these data indicate that EtGam22 is a potent immunogen for use as a subunit vaccine against cecal coccidiosis in chickens as it induces a diverse and robust immune response involving multiple cytokines and strong antibody titers.
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Li J, Wang F, Ma C, Huang Y, Wang D, Ma D. Recombinant lactococcus lactis expressing Eimeria tenella AMA1 protein and its immunological effects against homologous challenge. Exp Parasitol 2018; 191:1-8. [PMID: 29890444 DOI: 10.1016/j.exppara.2018.05.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 02/23/2018] [Accepted: 05/16/2018] [Indexed: 01/02/2023]
Abstract
Avian coccidiosis leads to severe economic losses for the global poultry industry. Apical membrane antigen 1 (AMA1) of E. tenella (EtAMA1) plays a vital role during invasion of parasites into host cells. In the present study, recombinant live Lactococcus lactis expressing cytoplasmic, secreted and cell wall-anchored EtAMA1 protein were respectively constructed. The three live bacteria were respectively administered orally to SPF chickens (100 μl bacteria containing 5 × 109 CFU per chicken) for three times at 10-day intervals. After immunization, the lymphocyte proliferative function, the percentage of CD4+ and CD8α+ T cells in peripheral blood, and the IgG titers in serum of chickens in each group were respectively measured. The protective effects of live bacteria expressing EtAMA1 protein against E. tenella challenge were evaluated based on body weight gain (BWG), lesion score in cecum, oocyst descrease ratio. The results showed that chickens immunized with three live bacteria, especially the bacteria expressing cell wall-anchored EtAMA1 protein, displayed higher IgG titers and CD4+ T cells proportions, thus provided more immune protective effects against homologous challenge compared with the PBS control group and vector control group (lactococci harboring pTX8048). The oocyst decrease ratio of 33.33% from chickens immunized with lactococci expressing cell wall-anchored EctoAMA1 was observed, which was higher than that of 27.67% and 25.37% from the other two bacteria-immunized groups, respectively. The above results suggested that cell wall-anchored EtAMA1 protein delivered by Lactococcus lactis could stimulate an effective immune responses against Eimeria infection.
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Affiliation(s)
- Jian Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China
| | - Fen Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Department of Pharmacology and Toxicology, Shanghai Institute of Planned Parenthood Research, National Evaluation Center for the Toxicology of Fertility and Regulating Drugs, Shanghai 200032, PR China
| | - Chunli Ma
- Food College, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China
| | - Yuchen Huang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China
| | - Dian Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, Heilongjiang, PR China.
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Chen Z, Wang X, Zhao N, Han L, Wang F, Li H, Cui Y, Zhao X. Improving the immunogenicity and protective efficacy of the EtMIC2 protein against Eimeria tenella infection through random mutagenesis. Vaccine 2018; 36:2435-2441. [DOI: 10.1016/j.vaccine.2018.03.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/27/2018] [Accepted: 03/15/2018] [Indexed: 01/07/2023]
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Ding C, Ma J, Dong Q, Liu Q. Live bacterial vaccine vector and delivery strategies of heterologous antigen: A review. Immunol Lett 2018; 197:70-77. [PMID: 29550258 DOI: 10.1016/j.imlet.2018.03.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/13/2018] [Indexed: 02/06/2023]
Abstract
Live bacteria, including attenuated bacteria and probiotics, can be engineered to deliver target antigen to excite the host immune system. The preponderance of these live bacterial vaccine vectors is that they can stimulate durable humoral and cellular immunity. Moreover, delivery strategies of heterologous antigen in live bacterial promote the applications of new vaccine development. Genetic technologies are evolving, which potentiate the developing of heterologous antigen delivery systems, including bacterial surface display system, bacterial secretion system and balanced lethal vector system. Although the live bacterial vaccine vector is a powerful adjuvant, certain disadvantages, such as safety risk, must also be taken into account. In this review, we compare the development of representative live bacterial vectors, and summarize the main characterizations of the various delivery strategies of heterologous antigen in live vector vaccines.
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Affiliation(s)
- Chengchao Ding
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Junfei Ma
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Qingli Dong
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Qing Liu
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, PR China.
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24
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Ma C, Zhang L, Gao M, Ma D. Construction of Lactococcus lactis expressing secreted and anchored Eimeria tenella 3-1E protein and comparison of protective immunity against homologous challenge. Exp Parasitol 2017; 178:14-20. [PMID: 28526337 DOI: 10.1016/j.exppara.2017.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 05/08/2017] [Accepted: 05/16/2017] [Indexed: 11/17/2022]
Abstract
Two novel plasmids pTX8048-SP-Δ3-1E and pTX8048-SP-NAΔ3-1E-CWA were constructed. The plasmids were respectively electrotransformed into L. lactis NZ9000 to generate strain of L. lactis/pTX8048-SP-Δ3-1E in which 3-1E protein was expressed in secretion, and L. lactis/pTX8048-SP-NAΔ3-1E-CWA on which 3-1E protein was covalently anchored to the surface of bacteria cells. The expression of target proteins were examined by Western blot. The live lactococci expressing secreted 3-1E protein, anchored 3-1E protein, and cytoplasmic 3-1E protein was administered orally to chickens respectively, and the protective immunity and efficacy were compared by animal experiment. The results showed oral immunization to chickens with recombinant lactococci expressing anchored 3-1E protein elicited high 3-1E-specific serum IgG, increased high proportion of CD4+ and CD8α+ cells in spleen, alleviated average lesion score in cecum, decreased the oocyst output per chicken compared to lactococci expressing cytoplasmic or secreted 3-1E protein. Taken together, these findings indicated the surface anchored Eimeria protein displayed by L. lacits can induce protective immunity and partial protection against homologous infection.
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Affiliation(s)
- Chunli Ma
- College of Food Science, Northeast Agricultural University, NO. 59 Mucai Street, Harbin 150030, China
| | - Lili Zhang
- College of Veterinary Medicine, Northeast Agricultural University, NO. 59 Mucai Street, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, NO. 59 Mucai Street, Harbin 150030, China
| | - Mingyang Gao
- College of Veterinary Medicine, Northeast Agricultural University, NO. 59 Mucai Street, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, NO. 59 Mucai Street, Harbin 150030, China
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, NO. 59 Mucai Street, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, NO. 59 Mucai Street, Harbin 150030, China.
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25
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Haldar L, Gandhi DN. Effect of oral administration of Bacillus coagulans B37 and Bacillus pumilus B9 strains on fecal coliforms, Lactobacillus and Bacillus spp. in rat animal model. Vet World 2016; 9:766-72. [PMID: 27536040 PMCID: PMC4983130 DOI: 10.14202/vetworld.2016.766-772] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 06/16/2016] [Indexed: 12/12/2022] Open
Abstract
Aim: To investigate the effect of oral administration of two Bacillus strains on fecal coliforms, Lactobacillus and Bacillus spp. in rat animal model. Materials and Methods: An in vivo experiment was conducted for 49-day period on 36 adult male albino Wister rats divided equally into to four groups. After 7-day adaptation period, one group (T1) was fed on sterile skim milk along with basal diet for the next 28 days. Second (T2) and (T3) groups received spore biomass of Bacillus coagulans B37 and Bacillus pumilus B9, respectively, suspended in sterilized skim milk at 8-9 log colony-forming units/ml plus basal diet for 28 days, while control group (T4) was supplied with clean water along with basal diet. There was a 14-day post-treatment period. A total of 288 fecal samples (8 fecal collections per rat) were collected at every 7-day interval starting from 0 to 49 days and subjected to the enumeration of the counts of coliforms and lactobacilli and Bacillus spores using respective agar media. In vitro acid and bile tolerance tests on both the strains were performed. Results: The rats those (T2 and T3) received either B. coagulans B37 or B. pumilus B9 spore along with non-fermented skim milk showed decrease (p<0.01) in fecal coliform counts and increase (p<0.05) in both fecal lactobacilli and Bacillus spore counts as compared to the control group (T4) and the group fed only skim milk (T1). In vitro study indicated that both the strains were found to survive at pH 2.0 and 3.0 even up to 3 h and tolerate bile up to 2.0% concentration even after 12 h of exposure. Conclusions: This study revealed that oral administration of either B. coagulans B37 or B. pumilus B9 strains might be useful in reducing coliform counts accompanied by concurrent increase in lactobacilli counts in the intestinal flora in rats.
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Affiliation(s)
- Lopamudra Haldar
- Department of Basic Sciences, Faculty of Science and Technology, ICFAI University, Kamalghat - 799 210, Tripura, India
| | - D N Gandhi
- Dairy Microbiology Division, National Dairy Research Institute, Karnal - 132 001, Haryana, India
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