scholarly journals Immune Responses to Orally Administered Recombinant Lactococcus lactis Expressing Multi-Epitope Proteins Targeting M Cells of Foot-and-Mouth Disease Virus

Viruses ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 2036
Author(s):  
Fudong Zhang ◽  
Zhongwang Zhang ◽  
Xian Li ◽  
Jiahao Li ◽  
Jianliang Lv ◽  
...  
Keyword(s):  
Immune Responses ◽  
Disease Virus ◽  
Guinea Pigs ◽  
Foot And Mouth Disease ◽  
M Cells ◽  
Cpg Odn ◽  
Cell Targeting ◽  
M Cell ◽  
Mucosal Surfaces ◽  
Mouth Disease Virus

Foot and mouth disease virus (FMDV), whose transmission occurs through mucosal surfaces, can also be transmitted through aerosols, direct contact, and pollutants. Therefore, mucosal immunity can efficiently inhibit viral colonization. Since vaccine material delivery into immune sites is important for efficient oral mucosal vaccination, the M cell-targeting approach is important for effective vaccination given M cells are vital for luminal antigen influx into the mucosal lymph tissues. In this study, we coupled M cell-targeting ligand Co1 to multi-epitope TB1 of FMDV to obtain TB1-Co1 in order to improve delivery efficiency of the multi-epitope protein antigen TB1. Lactococcus lactis (L. lactis) was engineered to express heterologous antigens for applications as vaccine vehicles with the ability to elicit mucosal as well as systemic immune responses. We successfully constructed L. lactis (recombinant) with the ability to express multi-epitope antigen proteins (TB1 and TB1-Co1) of the FMDV serotype A (named L. lactis-TB1 and L. lactis-TB1-Co1). Then, we investigated the immunogenic potential of the constructed recombinant L. lactis in mice and guinea pigs. Orally administered L. lactis-TB1 as well as L. lactis-TB1-Co1 in mice effectively induced mucosal secretory IgA (SIgA) and IgG secretion, development of a strong cell-mediated immune reactions, substantial T lymphocyte proliferation in the spleen, and upregulated IL-2, IFN-γ, IL-10, and IL-5 levels. Orally administered ligand-conjugated TB1 promoted specific IgG as well as SIgA responses in systemic and mucosal surfaces, respectively, when compared to orally administered TB1 alone. Then, guinea pigs were orally vaccinated with L. lactis-TB1-Co1 plus adjuvant CpG-ODN at three different doses, L. lactis-TB1-Co1, and PBS. Animals that had been immunized with L. lactis-TB1-Co1 plus adjuvant CpG-ODN and L. lactis-TB1-Co1 developed elevated antigen-specific serum IgG, IgA, neutralizing antibody, and mucosal SIgA levels, when compared to control groups. Particularly, in mice, L. lactis-TB1-Co1 exhibited excellent immune effects than L. lactis-TB1. Therefore, L. lactis-TB1-Co1 can induce elevations in mucosal as well as systemic immune reactions, and to a certain extent, provide protection against FMDV. In conclusion, M cell-targeting approaches can be employed in the development of effective oral mucosa vaccines for FMDV.

Development of Protective Immunity against Inactivated Iranian Isolate of Foot-and-Mouth Disease Virus Type O/IRN/2007 Using Gamma Ray-Irradiated Vaccine on BALB/c Mice and Guinea Pigs

Intervirology ◽  
2015 ◽  
Vol 58 (3) ◽  
pp. 190-196 ◽  
Author(s):  
Farahnaz Motamedi-Sedeh ◽  
Hoorieh Soleimanjahi ◽  
Amir Reza Jalilian ◽  
Homayoon Mahravani ◽  
Kamalodin Shafaee ◽  
...  
Keyword(s):  
Immune Responses ◽  
Disease Virus ◽  
Guinea Pigs ◽  
Gamma Ray ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Economic Losses ◽  
Mouth Disease Virus ◽  
Foot And Mouth ◽  
Fmdv Type

Objectives: Foot-and-mouth disease virus (FMDV) causes a highly contagious disease in cloven-hoofed animals and is the most damaging disease of livestock worldwide, leading to great economic losses. The aim of this research was the inactivation of FMDV type O/IRN/1/2007 to produce a gamma ray-irradiated (GRI) vaccine in order to immunize mice and guinea pigs. Methods: In this research, the Iranian isolated FMDV type O/IRN/1/2007 was irradiated by gamma ray to prepare an inactivated whole virus antigen and formulated as a GRI vaccine with unaltered antigenic characteristics. Immune responses against this vaccine were evaluated on mice and guinea pigs. Results: The comparison of the immune responses between the GRI vaccine and conventional vaccine did not show any significant difference in neutralizing antibody titer, memory spleen T lymphocytes or IFN-γ, IL-4, IL-2 and IL-10 concentrations (p > 0.05). In contrast, there were significant differences in all of the evaluated immune factors between the two vaccinated groups of mice and negative control mice (p < 0.05). The protective dose 50 for the conventional and GRI vaccines obtained were 6.28 and 7.07, respectively, which indicated the high potency of both vaccines. Conclusion: GRI vaccine is suitable for both routine vaccination and control of FMDV in emergency outbreaks.

CpG DNA enhances the immune responses elicited by the DNA vaccine against foot-and-mouth disease virus in guinea pigs

2001 ◽  
Vol 46 (16) ◽  
pp. 1376-1379 ◽  
Author(s):  
Guangjin Li ◽  
Yingjie Li ◽  
Weiyao Yan ◽  
Quanxin Xu ◽  
Yongqing Wu ◽  
...  
Keyword(s):  
Immune Responses ◽  
Disease Virus ◽  
Dna Vaccine ◽  
Guinea Pigs ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Cpg Dna ◽  
Mouth Disease Virus ◽  
Foot And Mouth

scholarly journals Bacterial Toxin Fusion Proteins Elicit Mucosal Immunity against a Foot-and-Mouth Disease Virus Antigen When Administered Intranasally to Guinea Pigs

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Sreerupa Challa ◽  
Steven M. Szczepanek ◽  
Debra Rood ◽  
Roger W. Barrette ◽  
Lawrence K. Silbart
Keyword(s):  
Immune Responses ◽  
Disease Virus ◽  
Mucosal Immunity ◽  
Guinea Pigs ◽  
Specific Antigen ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Mouth Disease Virus ◽  
Foot And Mouth ◽  
Mucosal Immune Responses

Peptides corresponding to the foot-and-mouth disease virus VP1 G-H loop are capable of inducing neutralizing antibodies in some species but are considered relatively poor immunogens, especially at mucosal surfaces. However, intranasal administration of antigens along with the appropriate delivery vehicle/adjuvant has been shown to induce mucosal immune responses, and bacterial enterotoxins have long been known to be effective in this regard. In the current study, two different carrier/adjuvant approaches were used to augment mucosal immunity to the FMDV O1BFS G-H loop epitope, in which the G-H loop was genetically coupled to theE. coliLT-B subunit and coexpressed with the LTA2 fragment (LTA2B-GH), or the nontoxic pseudomonas exotoxin A (ntPE) was fused to LTA2B-GH at LT-A2 to enhance receptor targeting. Only guinea pigs that were inoculated intranasally with ntPE-LTA2B-GH and LTA2B-GH induced significant anti-G-H loop IgA antibodies in nasal washes at weeks 4 and 6 when compared to ovalbumin or G-H loop immunized animals. These were also the only groups that exhibited G-H loop-specific antigen-secreting cells in the nasal mucosa. These data demonstrate that fusion of nonreplicating antigens to LTA2B and ntPE-LTA2B has the potential to be used as carriers/adjuvants to induce mucosal immune responses against infectious diseases.

scholarly journals Expression and Immunogenicity of Two Recombinant Fusion Proteins Comprising Foot-and-Mouth Disease Virus Structural Protein VP1 and DC-SIGN-Binding Glycoproteins

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Xinsheng Liu ◽  
Jianliang Lv ◽  
Yuzhen Fang ◽  
Peng Zhou ◽  
Yanzhen Lu ◽  
...  
Keyword(s):  
Immune Responses ◽  
Disease Virus ◽  
Fusion Proteins ◽  
Insect Cells ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Vp1 Protein ◽  
Sf9 Insect Cells ◽  
Mouth Disease Virus ◽  
Foot And Mouth

Improving vaccine immunogenicity by targeting antigens to dendritic cells has recently emerged as a new design strategy in vaccine development. In this study, the VP1 gene of foot-and-mouth disease virus (FMDV) serotype A was fused with the gene encoding human immunodeficiency virus (HIV) membrane glycoprotein gp120 or C2-V3 domain of hepatitis C virus (HCV) envelope glycoprotein E2, both of which are DC-SIGN-binding glycoproteins. After codon optimization, the VP1 protein and the two recombinant VP1-gp120 and VP1-E2 fusion proteins were expressed in Sf9 insect cells using the insect cell-baculovirus expression system. Western blotting showed that the VP1 protein and two recombinant VP1-gp120 and VP1-E2 fusion proteins were correctly expressed in the Sf9 insect cells and had good reactogenicity. Guinea pigs were then immunized with the purified proteins, and the resulting humoral and cellular immune responses were analyzed. The VP1-gp120 and VP1-E2 fusion proteins induced significantly higher specific anti-FMDV antibody levels than the VP1 protein and stronger cell-mediated immune responses. This study provides a new perspective for the development of novel FMDV subunit vaccines.

scholarly journals Molecular Mechanisms of Immune Escape for Foot-and-Mouth Disease Virus

Pathogens ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 729
Author(s):  
Bo Yang ◽  
Xiaohui Zhang ◽  
Dajun Zhang ◽  
Jing Hou ◽  
GuoWei Xu ◽  
...  
Keyword(s):  
Immune Responses ◽  
Disease Virus ◽  
Molecular Mechanisms ◽  
Immune Escape ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Host Immune Responses ◽  
Mouth Disease Virus ◽  
Foot And Mouth ◽  
Vesicular Disease

Foot-and-mouth disease virus (FMDV) causes a highly contagious vesicular disease in cloven-hoofed livestock that results in severe consequences for international trade, posing a great economic threat to agriculture. The FMDV infection antagonizes the host immune responses via different signaling pathways to achieve immune escape. Strategies to escape the cell immune system are key to effective infection and pathogenesis. This review is focused on summarizing the recent advances to understand how the proteins encoded by FMDV antagonize the host innate and adaptive immune responses.

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