Immunogenicity of Recombinant-Deficient Lactobacillus casei with Complementary Plasmid Expressing Alanine Racemase Gene and Core Neutralizing Epitope Antigen against Porcine Epidemic Diarrhea Virus.

Immunogenicity of Recombinant-Deficient Lactobacillus casei with Complementary Plasmid Expressing Alanine Racemase Gene and Core Neutralizing Epitope Antigen against Porcine Epidemic Diarrhea Virus.
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重组缺陷型干酪乳杆菌与表达丙氨酸消旋酶基因和核心中和表位抗原的互补质粒对猪流行性腹泻病毒的免疫原性

DOI:
10.3390/vaccines9101084
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发表时间:
2021-09-26
期刊:
影响因子:
7.8
通讯作者:
Li Y
Li Y
中科院分区:
医学3区
文献类型:
--
作者:
Li F;Wang X;Fan X;Sui L;Zhang H;Li Y;Zhou H;Wang L;Qiao X;Tang L;Li Y

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猪流行性腹泻(PED)是由猪流行性腹泻病毒(PEDV)引起的一种全球性疾病,对养猪业造成严重威胁。肠是PEDV的主要功能部位;因此,开发一种口腔黏膜免疫疫苗来对抗这种病毒感染是非常重要的。传统的质粒传递载体大多以抗生素基因作为选择性标记,容易导致抗生素积累和基因污染。本研究为探索丙氨酸消旋酶基因(Alr)是否可以作为筛选标记,并开发有效的PEDV口服疫苗,利用缺失Alr的干酪乳杆菌(L. casei ΔAlr W56)构建重组菌株,传递Alr基因和核心中和表位(COE)抗原。该重组菌通过口服疫苗有效诱导小鼠分泌性免疫球蛋白A (SIgA)粘膜和免疫球蛋白G (IgG)体液免疫应答。与其他菌株相比,重组菌能够在没有添加d -丙氨酸的情况下生长,这表明质粒中的Alr在缺陷菌中可以正常发挥作用。该口腔黏膜疫苗将为将来替代抗生素的应用提供一个有用的策略,并诱导有效的免疫应答来对抗PEDV感染。
Porcine epidemic diarrhea (PED), which is caused by the porcine epidemic diarrhea virus (PEDV), has occurred worldwide and poses a serious threat to the pig industry. Intestine is the main function site of PEDV; therefore, it is important to develop an oral mucosal immunity vaccine against this virus infection. Most traditional plasmid delivery vectors use antibiotic genes as a selective marker, easily leading to antibiotic accumulation and gene contamination. In this study, to explore whether the alanine racemase gene (Alr) could be used as a screening marker and develop an efficient oral vaccine against PEDV infection, a recombinant strain was constructed using Lactobacillus casei with Alr deletion (L. casei ΔAlr W56) to deliver the Alr gene and a core-neutralizing epitope (COE) antigen. This recombinant bacterium efficiently induced secretory immunoglobulin A (SIgA)-based mucosal and immunoglobulin G (IgG)-based humoral immune responses via oral vaccination in mice. Compared to the other strains, the recombinant bacteria were able to grow without the addition of D-alanine, revealing that Alr in the plasmid could function normally in defective bacteria. This oral mucosal vaccine would provide a useful strategy to substitute the application of antibiotics in the future and induce efficient immune responses against PEDV infection.
中国猪流行性腹泻病毒刺突基因检测及分子多样性
DOI: 10.3390/v5102601
发表时间: 2013-10-22
期刊: Viruses
影响因子: --
作者:
Chen J;Liu X;Shi D;Shi H;Zhang X;Li C;Chi Y;Feng L
通讯作者: Feng L
作为抗传染性胃肠炎病毒口服干酪乳杆菌疫苗的佐剂,上调 Th1 和 Th17 细胞中的 MDP 和 tuftsin 基因表达
DOI: 10.1007/s00253-014-5893-2
发表时间: 2014-10-01
影响因子: 5
作者:
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通讯作者: Li, Yijing
DOI: 10.1111/j.1600-0463.2010.02691.x
发表时间: 2011-01-01
期刊: APMIS
影响因子: 2.8
作者:
Eun, Chang Soo;Kim, Yong Seok;Park, Yoon Kyung
通讯作者: Park, Yoon Kyung
DOI: 10.1128/aem.68.11.5663-5670.2002
发表时间: 2002-11-01
影响因子: 4.4
作者:
Bron, PA;Benchimol, MG;Hols, P
通讯作者: Hols, P
DOI: 10.1111/j.1365-2672.2012.05328.x
发表时间: 2012-08-01
影响因子: 4
作者:
Choi, S. H.;Kwon, S. R.;Kim, K. H.
通讯作者: Kim, K. H.