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黏膜和灭活口蹄疫疫苗初免-加强免疫对牛口蹄疫病毒的增强保护作用。

Enhanced protection against FMDV in cattle after prime- boost vaccination based on mucosal and inactivated FMD vaccine.

机构信息

Department of Foot and Mouth Disease, Veterinary Serum and Vaccine Research Institute, Abbassia, Cairo 11381, Egypt.

Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt.

出版信息

Vet Microbiol. 2017 Oct;210:1-7. doi: 10.1016/j.vetmic.2017.08.014. Epub 2017 Aug 26.

Abstract

Improved immunization and control strategies and platforms are greatly needed for foot and mouth disease virus (FMDV) and mucosal vaccines propose an effective strategy for the control FMDV by blocking viral entry. In this study, several immunization strategies, using two FMDV vaccine formulations, including Montanide ISA 206 oil-based FMD inactivated vaccine and Montanide IMS 1313 VG N PR-based concentrated semi-purified FMD mucosal vaccine, were applied. Results of intranasal immunization with the prepared FMD mucosal vaccine, given once or twice, induced IgA levels in both nasal and salivary secretions besides a high response of lymphocyte proliferation with protection levels reaching 20% and 40%, respectively, in a challenge trial in cattle. Immunization with Montanide 206 inactivated FMD vaccine was capable of inducing 80% protection whereas prime-boost strategy based on the administration of mucosal vaccine followed by inactivated vaccine appeared to be the most potent strategy by achieving 100% protection against an FMDV challenge. Indeed, the study reports the efficacy of the prepared IMS 1313 FMD mucosal vaccine and the possible use of this vaccine in the context of different vaccination strategies to control FMDV.

摘要

需要改进的免疫和控制策略和平台,是非常需要的口蹄疫病毒(FMDV)和黏膜疫苗提出了一个有效的策略来控制 FMDV 通过阻断病毒进入。在这项研究中,几种免疫策略,使用两种 FMDV 疫苗制剂,包括 Montanide ISA 206 油基 FMD 灭活疫苗和 Montanide IMS 1313VG-N-PR 为基础的浓缩半纯化 FMD 黏膜疫苗,都得到了应用。鼻内免疫鼻内免疫的结果与准备好的 FMD 黏膜疫苗,给予一次或两次,诱导 IgA 水平在鼻腔和唾液分泌除了淋巴细胞增殖反应高,保护水平达到 20%和 40%,分别,在牛的攻毒试验。免疫蒙坦尼德 206 灭活 FMD 疫苗能够诱导 80%的保护,而基于黏膜疫苗接种后再接种灭活疫苗的加强免疫策略似乎是最有效的策略,达到了 100%的保护免受 FMDV 挑战。事实上,该研究报告了准备 IMS 1313 FMD 黏膜疫苗的功效和这种疫苗在不同疫苗接种策略控制 FMDV 的可能应用。

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