1
|
Abdelaziz K, Helmy YA, Yitbarek A, Hodgins DC, Sharafeldin TA, Selim MSH. Advances in Poultry Vaccines: Leveraging Biotechnology for Improving Vaccine Development, Stability, and Delivery. Vaccines (Basel) 2024; 12:134. [PMID: 38400118 PMCID: PMC10893217 DOI: 10.3390/vaccines12020134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
With the rapidly increasing demand for poultry products and the current challenges facing the poultry industry, the application of biotechnology to enhance poultry production has gained growing significance. Biotechnology encompasses all forms of technology that can be harnessed to improve poultry health and production efficiency. Notably, biotechnology-based approaches have fueled rapid advances in biological research, including (a) genetic manipulation in poultry breeding to improve the growth and egg production traits and disease resistance, (b) rapid identification of infectious agents using DNA-based approaches, (c) inclusion of natural and synthetic feed additives to poultry diets to enhance their nutritional value and maximize feed utilization by birds, and (d) production of biological products such as vaccines and various types of immunostimulants to increase the defensive activity of the immune system against pathogenic infection. Indeed, managing both existing and newly emerging infectious diseases presents a challenge for poultry production. However, recent strides in vaccine technology are demonstrating significant promise for disease prevention and control. This review focuses on the evolving applications of biotechnology aimed at enhancing vaccine immunogenicity, efficacy, stability, and delivery.
Collapse
Affiliation(s)
- Khaled Abdelaziz
- Department of Animal and Veterinary Science, College of Agriculture, Forestry and Life Sciences, Clemson University Poole Agricultural Center, Jersey Ln #129, Clemson, SC 29634, USA
- Clemson University School of Health Research (CUSHR), Clemson, SC 29634, USA
| | - Yosra A. Helmy
- Department of Veterinary Science, Martin-Gatton College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40546, USA;
| | - Alexander Yitbarek
- Department of Animal & Food Sciences, University of Delaware, 531 S College Ave, Newark, DE 19716, USA;
| | - Douglas C. Hodgins
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Tamer A. Sharafeldin
- Department of Veterinary Biomedical Science, Animal Disease Research and Diagnostic Laboratory, South Dakota State University, Brookings, SD 57007, USA; (T.A.S.); (M.S.H.S.)
| | - Mohamed S. H. Selim
- Department of Veterinary Biomedical Science, Animal Disease Research and Diagnostic Laboratory, South Dakota State University, Brookings, SD 57007, USA; (T.A.S.); (M.S.H.S.)
| |
Collapse
|
2
|
Xiao J, He W, Xiong C, Hao G, Pu J, Chen H, Xu L, Zhu Y, Ren Y, Yang G. Protective efficacy of recombinant proteins AMA1 and IMP1 in rabbits infected with Eimeria intestinalis. Vet Parasitol 2023; 320:109985. [PMID: 37482016 DOI: 10.1016/j.vetpar.2023.109985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 07/25/2023]
Abstract
Eimeria intestinalis is one of the most pathogenic rabbit coccidia species causing severe intestinal damage and increased risk of secondary infection from opportunistic pathogens, which results in huge economic losses to the rabbit industry. Anticoccidial drugs are currently the main method to control coccidiosis; however, increasing resistance and drug residues have fueled research on anticoccidial vaccines. Apical membrane antigen 1 (AMA1) and immune mapped protein 1 (IMP1), as surface proteins, are associated with host invasion and might have the potential as candidate vaccine antigens. In the present study, recombinant IMP1 (rEiIMP1) and AMA1 (rEiAMA1) from E. intestinalis were expressed using Escherichia coli BL21. The immunoreactivity and immunoprotective effects of rEiIMP1 and rEiAMA1 were then analyzed. Fifty rabbits were grouped randomly (n = 10 per group): The unimmunized-unchallenged control group (sterilized phosphate-buffered saline (PBS)), the unimmunized-challenged control group (sterilized PBS), the vector protein-challenged control group (100 μg of pET-32a vector protein per rabbit), the rEiIMP1 immunized group (100 μg of rEiIMP1 per rabbit), and the rEiAMA1 immunized group (100 μg of rEiAMA1 per rabbit). After two immunizations, the rabbits were challenged with homologous oocysts (except for the unimmunized-unchallenged group). Serum specific antibody levels were assessed weekly throughout the experimental period; and the levels of different cytokines in the serum before the challenge were detected. The clinical symptoms, oocysts output, weight gain, feed conversion ratio (FCR), and lesion scores were recorded after experimental infection, and the anticoccidial indexes (ACIs) were calculated. The results showed that both rEiIMP1 and rEiAMA1 had good immunoreactivity. Rabbits immunized with rEiIMP1 and rEiAMA1 displayed 66.74 % and 63.14 % oocyst reduction, respective land 81.79 % and 78.87 % body weight gain, respectively. The rEiIMP1 and rEiAMA1 groups had lower FCRs (3.77:1 and 4.06:1, respectively) and lesion scores (P = 0.00). The rEiIMP1 and rEiAMA1 showed moderate effects, with an ACI of 152.09 and 147.17, respectively. Immunization induced high levels of anti-rEiIMP1 and -rEiAMA1 antibodies. Rabbits immunized with rEiIMP1 and rEiAMA1 displayed significantly increased interleukin (IL)- 2 (P = 0.00), interferon gamma (IFN)- γ (P = 0.00), and IL- 4 (P = 0.00) levels. Therefore, this study provided potential candidate vaccine antigens for E. intestinalis.
Collapse
Affiliation(s)
- Jie Xiao
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Wei He
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Changming Xiong
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Ge Hao
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Jiayan Pu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Hao Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Liwen Xu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Yuhua Zhu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China
| | - Yongjun Ren
- Sichuan Animal Science Academy, Chengdu 610066, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Chengdu 610066, China.
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| |
Collapse
|
3
|
Sang X, Li X, Chen R, Feng Y, He T, Zhang X, El-Ashram S, Al-Olayan E, Yang N. Co-Immunization with DNA Vaccines Expressing SABP1 and SAG1 Proteins Effectively Enhanced Mice Resistance to Toxoplasma gondii Acute Infection. Vaccines (Basel) 2023; 11:1190. [PMID: 37515006 PMCID: PMC10384583 DOI: 10.3390/vaccines11071190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Toxoplasma gondii (T. gondii) has many intermediate hosts, obligately invades nucleated cells, and seriously threatens human and animal health due to a lack of effective drugs and vaccines. Sialic acid-binding protein 1 (SABP1) is a novel invasion-related protein that, like surface antigen 1 (SAG1), is found on the plasma membrane of T. gondii. To investigate the immunogenicity and protective efficacy of DNA vaccines expressing SABP1 and SAG1 proteins against T. gondii acute infection, the recombinant plasmids pVAX1-SABP1 and pVAX1-SAG1 were produced and administered intramuscularly in Balb/c mice. Serum antibody levels and subtypes, lymphocyte proliferation, and cytokines were used to assess immunized mice's humoral and cellular immune responses. Furthermore, the ability of DNA vaccines to protect mice against T. gondii RH tachyzoites was tested. Immunized mice exhibited substantially higher IgG levels, with IgG2a titers higher than IgG1. When the immune group mice's splenocytes were stimulated with T. gondii lysate antigen, Th1-type cytokines (IL-12p70, IFN-γ, and IL-2) and Th2-type cytokine (IL-4) increased significantly. The combined DNA vaccine significantly increased the immunized mouse survival compared to the control group, with an average death time extended by 4.33 ± 0.6 days (p < 0.0001). These findings show that DNA vaccines based on the SABP1 and SAG1 genes induced robust humoral and cellular immunity in mice, effectively protecting against acute toxoplasmosis and potentially serving as a viable option for vaccination to prevent T. gondii infection.
Collapse
Affiliation(s)
- Xiaoyu Sang
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiang Li
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Ran Chen
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Ying Feng
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Ting He
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaohan Zhang
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Saeed El-Ashram
- Department of Zoology, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Ebtsam Al-Olayan
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Na Yang
- Key Laboratory of Livestock Infectious Diseases, Shenyang Agricultural University, Ministry of Education, Shenyang 110866, China
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| |
Collapse
|
4
|
Xiao J, Zheng R, Bai X, Pu J, Chen H, Gu X, Xie Y, He R, Xu J, Jing B, Peng X, Yang G. Preliminary evaluation of the protective effects of recombinant AMA1 and IMP1 against Eimeria stiedae infection in rabbits. Parasit Vectors 2022; 15:400. [PMID: 36316714 PMCID: PMC9623944 DOI: 10.1186/s13071-022-05492-4] [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: 06/18/2022] [Accepted: 09/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Eimeria stiedae parasitizes the bile duct, causing hepatic coccidiosis in rabbits. Coccidiosis control using anticoccidials led to drug resistance and residues; therefore, vaccines are required as an alternative control strategy. Apical membrane antigen 1 (AMA1) and immune mapped protein 1 (IMP1) are surface-located proteins that might contribute to host cell invasion, having potential as candidate vaccine antigens. METHODS Herein, we cloned and expressed the E. stiedae EsAMA1 and EsIMP1 genes. The reactogenicity of recombinant AMA1 (rEsAMA1) and IMP1 (rEsIMP1) proteins were investigated using immunoblotting. For the vaccination-infection trial, rabbits were vaccinated with rEsAMA1 and rEsIMP1 (both 100 μg/rabbit) twice at 2-week intervals. After vaccination, various serum cytokines were measured. The protective effects of rEsAMA1 and rEsIMP1 against E. stiedae infection were assessed using several indicators. Sera were collected weekly to detect the specific antibody levels. RESULTS Both rEsAMA1 and rEsIMP1 showed strong reactogenicity. Rabbits vaccinated with rEsAMA1 and rEsIMP1 displayed significantly increased serum IL-2 (F (4, 25) = 9.53, P = 0.000), IL-4 (F (4, 25) = 7.81, P = 0.000), IL-17 (F (4, 25) = 8.55, P = 0.000), and IFN-γ (F (4, 25) = 6.89, P = 0.001) levels; in the rEsIMP1 group, serum TGF-β1 level was also elevated (F (4, 25) = 3.01, P = 0.037). After vaccination, the specific antibody levels increased and were maintained at a high level. The vaccination-infection trial showed that compared with the positive control groups, rabbits vaccinated with the recombinant proteins showed significantly reduced oocyst output (F (5, 54) = 187.87, P = 0.000), liver index (F (5, 54) = 37.52, P = 0.000), and feed conversion ratio; body weight gain was significantly improved (F (5, 54) = 28.82, P = 0.000). CONCLUSIONS rEsAMA1 and rEsIMP1 could induce cellular and humoral immunity, protecting against E. stiedae infection. Thus, rEsAMA1 and rEsIMP1 are potential vaccine candidates against E. stiedae.
Collapse
Affiliation(s)
- Jie Xiao
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Ruoyu Zheng
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Xin Bai
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Jiayan Pu
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Hao Chen
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Xiaobin Gu
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Yue Xie
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Ran He
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Jing Xu
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Bo Jing
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Xuerong Peng
- grid.80510.3c0000 0001 0185 3134Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Wenjiang, 611130 China
| | - Guangyou Yang
- grid.80510.3c0000 0001 0185 3134Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130 China
| |
Collapse
|
5
|
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.
Collapse
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,
| |
Collapse
|
6
|
Manohar MM, Campbell BE, Walduck AK, Moore RJ. Enhancement of live vaccines by co-delivery of immune modulating proteins. Vaccine 2022; 40:5769-5780. [PMID: 36064671 DOI: 10.1016/j.vaccine.2022.08.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 06/23/2022] [Accepted: 08/16/2022] [Indexed: 11/25/2022]
Abstract
Vaccines are very effective in providing protection against many infectious diseases. However, it has proven difficult to develop highly efficacious vaccines against some pathogens and so there is a continuing need to improve vaccine technologies. The first successful and widely used vaccines were based on attenuated pathogens (e.g., laboratory passaged Pasteurella multocida to vaccinate against fowl cholera) or closely related non-pathogenic organisms (e.g., cowpox to vaccinate against smallpox). Subsequently, live vaccines, either attenuated pathogens or non-pathogenic microorganisms modified to deliver heterologous antigens, have been successfully used to induce protective immune responses against many pathogens. Unlike conventional killed and subunit vaccines, live vaccines can deliver antigens to mucosal surfaces in a similar manner and context as the natural infection and hence can often produce a more appropriate and protective immune response. Despite these advantages, there is still a need to improve the immunogenicity of some live vaccines. The efficacy of injectable killed and subunit vaccines is usually enhanced using adjuvants such mineral salts, oils, and saponin, but such adjuvants cannot be used with live vaccines. Instead, live vaccines can be engineered to produce immunomodulatory molecules that can stimulate the immune system to induce more robust and long-lasting adaptive immune responses. This review focuses on research that has been undertaken to engineer live vaccines to produce immunomodulatory molecules that act as adjuvants to increase immunogenicity. Adjuvant strategies with varying mechanisms of action (inflammatory, antibody-mediated, cell-mediated) and delivery modes (oral, intramuscular, intranasal) have been investigated, with varying degrees of success. The goal of such research is to define adjuvant strategies that can be adapted to enhance live vaccine efficacy by triggering strong innate and adaptive immune responses and produce vaccines against a wider range of pathogens.
Collapse
Affiliation(s)
- Megha M Manohar
- School of Science, RMIT University, Bundoora, Victoria 3083, Australia.
| | | | - Anna K Walduck
- School of Science, RMIT University, Bundoora, Victoria 3083, Australia.
| | - Robert J Moore
- School of Science, RMIT University, Bundoora, Victoria 3083, Australia.
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
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]
|
9
|
Kornuta CA, Langellotti CA, Bidart JE, Soria I, Quattrocchi V, Gammella M, Cheuquepán Valenzuela F, Mignaqui AC, Ferraris S, Charleston B, Hecker YP, Moore DP, Zamorano PI. A plasmid encoding the extracellular domain of CD40 ligand and Montanide™ GEL01 as adjuvants enhance the immunogenicity and the protection induced by a DNA vaccine against BoHV-1. Vaccine 2021; 39:1007-1017. [PMID: 33446386 DOI: 10.1016/j.vaccine.2020.11.071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 11/24/2020] [Accepted: 11/29/2020] [Indexed: 02/09/2023]
Abstract
DNA vaccines are capable of inducing humoral and cellular immunity, and are important to control bovine herpesvirus 1 (BoHV-1), an agent of the bovine respiratory disease complex. In previous work, a DNA plasmid that encodes a secreted form of BoHV-1 glycoprotein D (pCIgD) together with commercial adjuvants provided partial protection against viral challenge of bovines. In this work, we evaluate new molecules that could potentiate the DNA vaccine. We show that a plasmid encoding a soluble CD40 ligand (CD40L) and the adjuvant Montanide™ GEL01 (GEL01) activate in vitro bovine afferent lymph dendritic cells (ALDCs). CD40L is a co-stimulating molecule, expressed transiently on activated CD4+ T cells and, to a lesser extent, on activated B cells and platelets. The interaction with its receptor, CD40, exerts effects on the presenting cells, triggering responses in the immune system. GEL01 was designed to improve transfection of DNA vaccines. We vaccinated cattle with: pCIgD; pCIgD-GEL01; pCIgD with GEL01 and CD40L plasmid (named pCIgD-CD40L-GEL01) or with pCIneo vaccines. The results show that CD40L plasmid with GEL01 improved the pCIgD DNA vaccine, increasing anti-BoHV-1 total IgGs, IgG1, IgG2 subclasses, and neutralizing antibodies in serum. After viral challenge, bovines vaccinated with pCIgD-GEL01-CD40L showed a significant decrease in viral excretion and clinical score. On the other hand, 80% of animals in group pCIgD-GEL01-CD40L presented specific anti-BoHV-1 IgG1 antibodies in nasal swabs. In addition, PBMCs from pCIgD-CD40L-GEL01 had the highest percentage of animals with a positive lymphoproliferative response against the virus and significant differences in the secretion of IFNγ and IL-4 by mononuclear cells, indicating the stimulation of the cellular immune response. Overall, the results demonstrate that a plasmid expressing CD40L associated with the adjuvant GEL01 improves the efficacy of a DNA vaccine against BoHV-1.
Collapse
Affiliation(s)
- Claudia Alejandra Kornuta
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Cecilia Ana Langellotti
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Juan Esteban Bidart
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ivana Soria
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina
| | - Valeria Quattrocchi
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina
| | - Mariela Gammella
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina
| | - Felipe Cheuquepán Valenzuela
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Balcarce, Argentina
| | - Ana Clara Mignaqui
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB, INTA-CONICET), San Carlos de Bariloche, Río Negro, Argentina
| | | | | | - Yanina Paola Hecker
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Balcarce, Argentina
| | - Dadin Prando Moore
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Balcarce, Argentina
| | - Patricia Inés Zamorano
- Instituto de Virología e Innovaciones Tecnológicas (IVIT, INTA-CONICET) Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Universidad del Salvador, Buenos Aires, Argentina.
| |
Collapse
|
10
|
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
| |
Collapse
|
11
|
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.
Collapse
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
| |
Collapse
|
12
|
Song X, Yang X, Zhang T, Liu J, Liu Q. A Novel Rhoptry Protein as Candidate Vaccine against Eimeria tenella Infection. Vaccines (Basel) 2020; 8:vaccines8030452. [PMID: 32806700 PMCID: PMC7565193 DOI: 10.3390/vaccines8030452] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/08/2020] [Accepted: 08/10/2020] [Indexed: 01/26/2023] Open
Abstract
Eimeria tenella (E. tenella) is a highly pathogenic and prevalent species of Eimeria that infects chickens, and it causes a considerable disease burden worldwide. The secreted proteins and surface antigens of E. tenella at the sporozoite stage play an essential role in the host–parasite interaction, which involves attachment and invasion, and these interactions are considered vaccine candidates based on the strategy of cutting off the invasion pathway to interrupt infection. We selected two highly expressed surface antigens (SAGs; Et-SAG13 and Et-SAG) and two highly expressed secreted antigens (rhoptry kinases Eten5-A, Et-ROPK-Eten5-A and dense granule 12, Et-GRA12) at the sporozoite stage. Et-ROPK-Eten5-A and Et-GRA12 were two unexplored proteins. Et-ROPK-Eten5-A was an E. tenella-specific rhoptry (ROP) protein and distributed in the apical pole of sporozoites and merozoites. Et-GRA12 was scattered in granular form at the sporozoite stage. To evaluate the potential of rEt-ROPK-Eten5-A, rEt-GRA12, rEt-SAG13 and rEt-SAG proteins as a coccidiosis vaccine, the protective efficacy was examined based on survival rate, lesion score, body weight gain, relative body weight gain and oocyst output. The survival rate was significantly improved in rEt-ROPK-Eten5-A (100%) and rEt-GRA12 (100%) immune chickens compared to the challenged control group (40%). The average body weight gains of rEt-ROPK-Eten5-A, rEt-GRA12, rEt-SAG13 and rEt-SAG immunized chickens were significantly higher than those of unimmunized chickens. The mean lesion score and oocyst output of the rEt-ROPK-Eten5-A immunized chickens were significantly reduced compared to unimmunized challenged chickens. These results suggest that the rEt-ROPK-Eten5-A protein effectively triggered protection against E. tenella in chickens and provides a useful foundation for future work developing anticoccidial vaccines.
Collapse
Affiliation(s)
- Xingju Song
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China; (X.S.); (X.Y.); (T.Z.); (J.L.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China
| | - Xu Yang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China; (X.S.); (X.Y.); (T.Z.); (J.L.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China
| | - Taotao Zhang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China; (X.S.); (X.Y.); (T.Z.); (J.L.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China
| | - Jing Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China; (X.S.); (X.Y.); (T.Z.); (J.L.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China
| | - Qun Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China; (X.S.); (X.Y.); (T.Z.); (J.L.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100083, China
- Correspondence:
| |
Collapse
|
13
|
Pastor-Fernández I, Kim S, Marugán-Hernández V, Soutter F, Tomley FM, Blake DP. Vaccination with transgenic Eimeria tenella expressing Eimeria maxima AMA1 and IMP1 confers partial protection against high-level E. maxima challenge in a broiler model of coccidiosis. Parasit Vectors 2020; 13:343. [PMID: 32650837 PMCID: PMC7350274 DOI: 10.1186/s13071-020-04210-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/30/2020] [Indexed: 01/10/2023] Open
Abstract
Background Poultry coccidiosis is a parasitic enteric disease with a highly negative impact on chicken production. In-feed chemoprophylaxis remains the primary method of control, but the increasing ineffectiveness of anticoccidial drugs, and potential future restrictions on their use has encouraged the use of commercial live vaccines. Availability of such formulations is constrained by their production, which relies on the use of live chickens. Several experimental approaches have been taken to explore ways to reduce the complexity and cost of current anticoccidial vaccines including the use of live vectors expressing relevant Eimeria proteins. We and others have shown that vaccination with transgenic Eimeria tenella parasites expressing Eimeria maxima Apical Membrane Antigen-1 or Immune Mapped Protein-1 (EmAMA1 and EmIMP1) partially reduces parasite replication after challenge with a low dose of E. maxima oocysts. In the present study, we have reassessed the efficacy of these experimental vaccines using commercial birds reared at high stocking densities and challenged with both low and high doses of E. maxima to evaluate how well they protect chickens against the negative impacts of disease on production parameters. Methods Populations of E. tenella parasites expressing EmAMA1 and EmIMP1 were obtained by nucleofection and propagated in chickens. Cobb500 broilers were immunised with increasing doses of transgenic oocysts and challenged two weeks later with E. maxima to quantify the effect of vaccination on parasite replication, local IFN-γ and IL-10 responses (300 oocysts), as well as impacts on intestinal lesions and body weight gain (10,000 oocysts). Results Vaccination of chickens with E. tenella expressing EmAMA1, or admixtures of E. tenella expressing EmAMA1 or EmIMP1, was safe and induced partial protection against challenge as measured by E. maxima replication and severity of pathology. Higher levels of protection were observed when both antigens were delivered and was associated with a partial modification of local immune responses against E. maxima, which we hypothesise resulted in more rapid immune recognition of the challenge parasites. Conclusions This study offers prospects for future development of multivalent anticoccidial vaccines for commercial chickens. Efforts should now be focused on the discovery of additional antigens for incorporation into such vaccines.![]()
Collapse
Affiliation(s)
- Iván Pastor-Fernández
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertforshire, AL9 7TA, UK. .,SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, 28040, Madrid, Spain.
| | - Sungwon Kim
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertforshire, AL9 7TA, UK
| | - Virginia Marugán-Hernández
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertforshire, AL9 7TA, UK
| | - Francesca Soutter
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertforshire, AL9 7TA, UK
| | - Fiona M Tomley
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertforshire, AL9 7TA, UK
| | - Damer P Blake
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertforshire, AL9 7TA, UK
| |
Collapse
|
14
|
Huang H, Jiang Y, Zhou F, Shi C, Yang W, Wang J, Kang Y, Cao X, Wang C, Yang G. A potential vaccine candidate towards chicken coccidiosis mediated by recombinant Lactobacillus plantarum with surface displayed EtMIC2 protein. Exp Parasitol 2020; 215:107901. [PMID: 32525007 DOI: 10.1016/j.exppara.2020.107901] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 03/25/2020] [Accepted: 04/20/2020] [Indexed: 11/19/2022]
Abstract
Eimeria tenella (E. tenella) has caused severe economic loss in chicken production, especially after the forbidden use of antibiotics in feed. Considering the drug resistant problem caused by misuse of chemoprophylaxis and live oocyst vaccines can affect the productivity of chickens, also it has the risk to reversion of virulence, the development of efficacious, convenient and safe vaccines is still deeply needed. In this study, the EtMic2 protein of E. tenella was anchored on the surface of Lactobacillus plantarum (L. plantarum) NC8 strain. The newly constructed strain was then used to immunize chickens, followed by E. tenella challenge. The results demonstrated that the recombinant strain could provide efficient protection against E. tenella, shown by increased relative body weight gains, percentages of CD4+ and CD8+ T cells, humoral immune response and inflammatory cytokines. In addition, decreased cecum lesion scores and fecal oocyst shedding were also observed during the experiment. In conclusion, this study proves the possibility to use L. plantarum as a vessel to deliver protective antigen to protect chickens against coccidiosis.
Collapse
Affiliation(s)
- 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, Changchun, 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, Changchun, China
| | - FangYu Zhou
- 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, Changchun, 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, Changchun, 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, Changchun, China
| | - JianZhong 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, Changchun, China
| | - YuanHuan Kang
- 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, Changchun, China
| | - Xin Cao
- 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, Changchun, 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, Changchun, 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, Changchun, China.
| |
Collapse
|
15
|
Fatoba AJ, Adeleke MA. Transgenic Eimeria parasite: A potential control strategy for chicken coccidiosis. Acta Trop 2020; 205:105417. [PMID: 32105666 DOI: 10.1016/j.actatropica.2020.105417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/22/2020] [Accepted: 02/22/2020] [Indexed: 10/24/2022]
Abstract
Poultry industry has been very instrumental in curtailing malnutrition and poverty and as such contributing to economic growth. However, production loss in poultry industry due to parasitic disease such as coccidiosis has become a global challenge. Chicken coccidiosis is an enteric disease that is associated with morbidity and mortality. The control of this parasite through anticoccidial live vaccines and drugs has been very successful though with some limitations such as the cost of production of live vaccines, and drugs resistance which is a public health concern. The discovery of Eimeria vaccine antigens such as Apical membrane antigens (AMA)-1 and Immune mapped protein (IMP)-1 have introduced the use of recombinant vaccines as alternative control measures against chicken coccidiosis. Although some protections have been reported among recombinant vaccines, improving their protective efficacy has triggered the search for a novel and efficient delivery vehicle. Transgenic Eimeria, which is constructed either through stable or transient transfection is currently being explored as novel delivery vehicle of Eimeria vaccine antigens. Due to partial protections reported in chickens vaccinated with transgenic Eimeria lines expressing different Eimeria antigens, improving protective efficacy becomes imperative. Recent trends in the design of transgenic Eimeria for potential application in the control of chicken coccidiosis are summarized in this review. We conclude that, with improved protective efficacy using multiple vaccine antigens, transgenic Eimeria parasite could fill the gap in the control of chicken coccidiosis as an efficient anticoccidial vaccine.
Collapse
|
16
|
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
| |
Collapse
|
17
|
Tang X, Wang C, Liang L, Hu D, Zhang S, Duan C, Suo J, Liu X, Suo X, Cui S. Co-immunization with two recombinant Eimeria tenella lines expressing immunoprotective antigens of E. maxima elicits enhanced protection against E. maxima infection. Parasit Vectors 2019; 12:347. [PMID: 31300007 PMCID: PMC6626336 DOI: 10.1186/s13071-019-3605-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 07/06/2019] [Indexed: 01/23/2023] Open
Abstract
Background Live anticoccidial vaccines have been a tremendous success for disease prevention. The establishment of the reverse genetic manipulation platform has enabled the development of Eimeria parasites, the live anticoccidial vaccine strains, as vaccine vectors. In our previous study, recombinant E. tenella expressing a single immunodominant antigen of E. maxima (Et-EmIMP1) was able to protect chickens against challenge infection with E. maxima. This promising result encouraged us to further explore strategies to improve the protection efficacy of recombinant Eimeria and develop it as a vaccine vector. Results We constructed a novel recombinant Eimeria line expressing apical membrane antigen 1 of E. maxima (Et-EmAMA1) and then immunized chickens with Et-EmAMA1 and/or Et-EmIMP1. We found that the E. maxima soluble antigen-specific cell-mediated immunity was much stronger in the birds that were co-immunized with Et-EmAMA1 and Et-EmIMP1 than in those that were immunized with Et-EmAMA1 or Et-EmIMP1 alone. The oocyst production after E. maxima infection was significantly reduced in the recombinant Eimeria-immunized birds compared with the wild-type-immunized and naïve birds. The oocyst production in the birds co-immunized with Et-EmAMA1 and Et-EmIMP1 was consistently the lowest among the treatment groups after E. maxima infection. Conclusions These results demonstrated that Eimeria is an effective vaccine vector that can carry and deliver heterologous Eimeria antigens to the host immune system and trigger specific immune responses. Our results also suggested that increasing the number of recombinant Eimeria lines is an effective approach to enhance protective immunity against infections with heterologous pathogens.
Collapse
Affiliation(s)
- Xinming Tang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chaoyue Wang
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Lin Liang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,Beijing Scientific Observation and Experimental Station of Veterinary Drugs and Diagnostic Technology, Ministry of Agriculture, Beijing, China
| | - Dandan Hu
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Sixin Zhang
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Chunhui Duan
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jingxia Suo
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xianyong Liu
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xun Suo
- Key Laboratory of Zoonosis of Ministry of Agriculture & National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Shangjin Cui
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China. .,Beijing Scientific Observation and Experimental Station of Veterinary Drugs and Diagnostic Technology, Ministry of Agriculture, Beijing, China.
| |
Collapse
|
18
|
Fatoba AJ, Adeleke MA. Diagnosis and control of chicken coccidiosis: a recent update. J Parasit Dis 2018; 42:483-493. [PMID: 30538344 PMCID: PMC6261147 DOI: 10.1007/s12639-018-1048-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 10/24/2018] [Indexed: 11/25/2022] Open
Abstract
Coccidiosis is a deadly disease that hampers chicken's productivity and welfare. Thus, the disease is a major menace to the global poultry industry. Coccidiosis which is caused by the apicomplexan parasite of the genus Eimeria has seven known species which affect the different parts of the intestinal tract of chickens. The disease which occurs by ingestion of sporulated oocyst has been associated with poor poultry management system. Mixed infection among the species of this parasite contributes to both pathogenicity and misdiagnosis of the disease. A progress in identification and diagnosis approach which cuts across pathological, morphological and molecular has been reported for this parasite. Control measures which include anticoccidial drugs, vaccines and natural products have dominated literature for this disease. However, the emergence of genetic and antigenic diversity with implication on resistance to anticoccidials among different strains of Eimeria parasite has generated concerns on the effectiveness of the current anticoccidial vaccines. A new look on the control strategy therefore becomes imperative. This study reviews the current trends on the identification and control of chicken coccidiosis with focus on (1) Avian coccidiosis (2) Epidemiology of chicken coccidiosis (3) Eimeria parasite and distribution in poultry (4) Diagnosis of Eimeria parasite (5) Control measures of coccidiosis (6) Threats posed by genetic and antigenic diversity of Eimeria parasite on coccidiosis control. Genomic study on diversity of Eimeria parasite becomes imperative for effective vaccine design against coccidiosis.
Collapse
Affiliation(s)
- Abiodun Joseph Fatoba
- Discipline of Genetics, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Westville, P/Bag X54001, Durban, 4000 South Africa
| | - Matthew Adekunle Adeleke
- Discipline of Genetics, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Westville, P/Bag X54001, Durban, 4000 South Africa
| |
Collapse
|
19
|
Liu T, Huang J, Ehsan M, Wang S, Fei H, Zhou Z, Song X, Yan R, Xu L, Li X. Protective immunity against Eimeria maxima induced by vaccines of Em14-3-3 antigen. Vet Parasitol 2018; 253:79-86. [PMID: 29605008 DOI: 10.1016/j.vetpar.2018.02.027] [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: 09/21/2017] [Revised: 02/09/2018] [Accepted: 02/10/2018] [Indexed: 11/26/2022]
Abstract
Eimeria maxima 14-3-3 (Em14-3-3) open reading frame (ORF) which consisted of 861 bp encoding a protein of 286 amino acids was successfully amplified and sequenced. Subsequently, the Em14-3-3 ORF was subcloned into pET-32a (+) and pVAX1, respectively. RT-PCR and immunoblot analyses confirmed that the target gene was successfully transcribed and expressed in vivo. Immunofluorescence analysis showed that Em14-3-3 was expressed in both the sporozoites and merozoites. The animal experiments demonstrated that both rEm14-3-3 and pVAX1-14-3-3 could clearly alleviate jejunum lesions and body weight loss. The Em14-3-3 vaccines could increase oocyst decrease ratio, as well as produce an anticoccidial index of more than 165. The percentages of CD4+ in both the Em14-3-3 immunized groups were much higher, when compared with those of PBS, pET32a (+), and pVAX1 controls (P < 0.05). Similarly, the anti-Em14-3-3 antibody titers of both rEm14-3-3 and pVAX1-14-3-3 immunized groups showed higher levels compared with those of PBS, pET32a (+), and pVAX1 controls (P < 0.05). The IFN-γ and tumor growth factor-β (TGF-β) levels showed significant increments in the rEm14-3-3 and pVAX1-14-3-3 immunized groups, when compared with those in the negative controls (P < 0.05). These results demonstrated that Em14-3-3 could be used as a promising antigen candidate for developing vaccines against E. maxima.
Collapse
Affiliation(s)
- Tingqi Liu
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Jingwei Huang
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Muhammad Ehsan
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Shuai Wang
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Hong Fei
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Zhouyang Zhou
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Xiaokai Song
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Ruofeng Yan
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Lixin Xu
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Xiangrui Li
- College of Veterinary Medicine, Nanjing Agriculture University, 1 Weigang, Nanjing, Jiangsu 210095, PR China.
| |
Collapse
|
20
|
Recombinant anticoccidial vaccines - a cup half full? INFECTION GENETICS AND EVOLUTION 2017; 55:358-365. [DOI: 10.1016/j.meegid.2017.10.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/06/2017] [Accepted: 10/07/2017] [Indexed: 12/27/2022]
|
21
|
Passive immunization with Eimeria tenella gametocyte antigen 56 (EtGAM56) specific antibodies and active immunization trial with the epitope containing peptide. Vet Parasitol 2017; 247:100-107. [DOI: 10.1016/j.vetpar.2017.09.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 09/12/2017] [Accepted: 09/23/2017] [Indexed: 11/19/2022]
|
22
|
Kundu K, Garg R, Kumar S, Mandal M, Tomley FM, Blake DP, Banerjee PS. Humoral and cytokine response elicited during immunisation with recombinant Immune Mapped protein-1 (EtIMP-1) and oocysts of Eimeria tenella. Vet Parasitol 2017; 244:44-53. [PMID: 28917316 DOI: 10.1016/j.vetpar.2017.07.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/16/2017] [Accepted: 07/22/2017] [Indexed: 11/19/2022]
Abstract
Eimeria tenella, the causative agent of caecal coccidiosis, is a pathogenic gut dwelling protozoan which can cause severe morbidity and mortality in farmed chickens. Immune mapped protein-1 (IMP-1) has been identified as an anticoccidial vaccine candidate; in the present study allelic polymorphism was assessed across the IMP-1 coding sequence in E. tenella isolates from four countries and compared with the UK reference Houghton strain. Nucleotide diversity was low, limited to expansion/contraction of a CAG triplet repeat and five substitutions, three of which were non-synonymous. The EtIMP-1 coding sequence from a cloned Indian E. tenella isolate was expressed in E. coli and purified as a His-tagged thioredoxin fusion protein. An in-vivo vaccination and challenge trial was conducted to test the vaccine potential of recombinant EtIMP-1 (rEtIMP-1) and to compare post-vaccination immune responses of chickens to those stimulated by live oocyst infection. Following challenge, parasite replication measured using quantitative PCR was significantly reduced in chickens that had been vaccinated with rEtIMP-1 (rIC group; 67% reduction compared to UC or unimmunised controls; 79% reduction compared to rTC group or recombinant thioredoxin mock-immunised controls, p<0.05), or the birds vaccinated by infection with oocysts (OC group, 90% compared to unimmunised controls). Chickens vaccinated with oocysts (OC) had significantly higher levels of interferon gamma in their serum post-challenge, compared to rEtIMP-1 vaccinated birds (rIC). Conversely rEtIMP-1 (rIC) vaccinated birds had significantly higher antigen specific serum IgY responses, correlating with higher serum IL-4 (both p<0.05).
Collapse
Affiliation(s)
- Krishnendu Kundu
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, PIN-243122, India
| | - Rajat Garg
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, PIN-243122, India
| | - Saroj Kumar
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, PIN-243122, India
| | - Mrityunjay Mandal
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, PIN-243122, India
| | - Fiona M Tomley
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL97TA, UK
| | - Damer P Blake
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL97TA, UK
| | - Partha Sarathi Banerjee
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, PIN-243122, India.
| |
Collapse
|
23
|
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.
Collapse
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.
| |
Collapse
|
24
|
Tang X, Yin G, Qin M, Tao G, Suo J, Liu X, Suo X. Transgenic Eimeria tenella as a vaccine vehicle: expressing TgSAG1 elicits protective immunity against Toxoplasma gondii infections in chickens and mice. Sci Rep 2016; 6:29379. [PMID: 27387302 PMCID: PMC4937369 DOI: 10.1038/srep29379] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/17/2016] [Indexed: 02/02/2023] Open
Abstract
The surface antigen 1 of Toxoplasma gondii (TgSAG1) is a major immunodominant antigen and is widely considered an ideal candidate for the development of an effective recombinant vaccine against toxoplasmosis. Eimeria tenella, an affinis apicomplexan parasite with T. gondii, is a potential vaccine vector carrying exogenous antigens that stimulates specific immune responses. Here, we engineered TgSAG1 into E. tenella and obtained a stably transfected E. tenella line (Et-TgSAG1). We found TgSAG1 localized on the cell surface of Et-TgSAG1, which is similar to its native distribution in T. gondii tachyzoites. We immunized the chickens with Et-TgSAG1 orally and detected TgSAG1-specific immune responses, which partly reduced T. gondii infection. In the mouse model, we immunized the mice with Et-TgSAG1 sporozoites intraperitoneally and challenged them with T. gondii tachyzoites RH strain. We found that the mice immunized with Et-TgSAG1 showed a TgSAG1 specific Th 1-dominant immune response and a prolonged survival time compared with wild-type E. tenella and non-immunized mice. Collectively, our results demonstrated that Et-TgSAG1, utilized as a recombinant vaccine against toxoplasmosis, could be applied in both chickens and mice. Our findings also provide a promising persuasion for the development of transgenic Eimeria as vaccine vectors for use in birds and mammals.
Collapse
Affiliation(s)
- Xinming Tang
- State Key Laboratory of Agrobiotechnology &Key Laboratory of Zoonosis of Ministry of Agriculture &National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Guangwen Yin
- Engineering Laboratory of Animal Pharmaceuticals, College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian Province, China
| | - Mei Qin
- State Key Laboratory of Agrobiotechnology &Key Laboratory of Zoonosis of Ministry of Agriculture &National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Geru Tao
- State Key Laboratory of Agrobiotechnology &Key Laboratory of Zoonosis of Ministry of Agriculture &National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jingxia Suo
- State Key Laboratory of Agrobiotechnology &Key Laboratory of Zoonosis of Ministry of Agriculture &National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xianyong Liu
- State Key Laboratory of Agrobiotechnology &Key Laboratory of Zoonosis of Ministry of Agriculture &National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xun Suo
- State Key Laboratory of Agrobiotechnology &Key Laboratory of Zoonosis of Ministry of Agriculture &National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| |
Collapse
|
25
|
The case for plant-made veterinary immunotherapeutics. Biotechnol Adv 2016; 34:597-604. [PMID: 26875776 DOI: 10.1016/j.biotechadv.2016.02.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/14/2016] [Accepted: 02/11/2016] [Indexed: 12/11/2022]
Abstract
The excessive use of antibiotics in food animal production has contributed to resistance in pathogenic bacteria, thereby triggering regulations and consumer demands to limit their use. Alternatives for disease control are therefore required that are cost-effective and compatible with intensive production. While vaccines are widely used and effective, they are available against a minority of animal diseases, and development of novel vaccines and other immunotherapeutics is therefore needed. Production of such proteins recombinantly in plants can provide products that are effective and safe, can be orally administered with minimal processing, and are easily scalable with a relatively low capital investment. The present report thus advocates the use of plants for producing vaccines and antibodies to protect farm animals from diseases that have thus far been managed with antibiotics; and highlights recent advances in product efficacy, competitiveness, and regulatory approval.
Collapse
|