scholarly journals Hollow mesoporous silica nanoparticles as delivery vehicle of foot‐and‐mouth disease virus‐like particles induce persistent immune responses in guinea pigs

2019 ◽  
Vol 91 (6) ◽  
pp. 941-948 ◽  
Author(s):  
Manyuan Bai ◽  
Hu Dong ◽  
Xin Su ◽  
Ye Jin ◽  
Shiqi Sun ◽  
...  
2019 ◽  
Vol 7 (21) ◽  
pp. 3446-3454 ◽  
Author(s):  
Zhijun Liu ◽  
Jiaxi Ru ◽  
Shiqi Sun ◽  
Zhidong Teng ◽  
Hu Dong ◽  
...  

Dendrimer-like mesoporous silica nanoparticles (MSNs) with large center-radial mesopores have been prepared for macromolecular protein loading and delivery.


Intervirology ◽  
2015 ◽  
Vol 58 (3) ◽  
pp. 190-196 ◽  
Author(s):  
Farahnaz Motamedi-Sedeh ◽  
Hoorieh Soleimanjahi ◽  
Amir Reza Jalilian ◽  
Homayoon Mahravani ◽  
Kamalodin Shafaee ◽  
...  

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.


Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6617-6626 ◽  
Author(s):  
D. Mahony ◽  
A. S. Cavallaro ◽  
K. T. Mody ◽  
L. Xiong ◽  
T. J. Mahony ◽  
...  

Immunisation studies in mice show that hollow mesoporous silica nanoparticles act as both a delivery vehicle and adjuvant for the viral protein E2 from bovine viral diahorrea virus.


Viruses ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 2036
Author(s):  
Fudong Zhang ◽  
Zhongwang Zhang ◽  
Xian Li ◽  
Jiahao Li ◽  
Jianliang Lv ◽  
...  

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.


2001 ◽  
Vol 46 (16) ◽  
pp. 1376-1379 ◽  
Author(s):  
Guangjin Li ◽  
Yingjie Li ◽  
Weiyao Yan ◽  
Quanxin Xu ◽  
Yongqing Wu ◽  
...  

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Sreerupa Challa ◽  
Steven M. Szczepanek ◽  
Debra Rood ◽  
Roger W. Barrette ◽  
Lawrence K. Silbart

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.


2015 ◽  
Vol 3 (31) ◽  
pp. 6480-6489 ◽  
Author(s):  
Haijiao Zhang ◽  
Huijuan Xu ◽  
Minghong Wu ◽  
Yufang Zhong ◽  
Donghai Wang ◽  
...  

Novel hollow mesoporous silica nanoparticles (HMSNs) with rough surfaces have been successfully prepared using a facile soft–hard template route.


Sign in / Sign up

Export Citation Format

Share Document