期刊
VACCINES
卷 7, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/vaccines7030094
关键词
VNNV; mass-immunization; sea bass; recombinant bacterins; spinycterins; DNA-damaged; repair-less
资金
- European Union Performfish [727610]
- Ministerio de Economia, Industria y Competitividad of Spain [BIO2017-82851-C3-2-R]
This work describes immunization of European sea bass (Dicentrarchus labrax) juveniles against viral nervous necrosis virus (VNNV), a betanodavirus causing worldwide mortalities in many fish species. Protection was obtained with the so-called spinycterin vehicles consisting of irreversibly DNA-damaged DNA-repair-less Escherichia coli displaying at their surface a downsized VNNV coat antigen. In this work we have (i) maximized bacterial expression levels by downsizing the coat protein of VNNV to a fragment (frgC(91-220)) containing most of its previously determined antigenicity, (ii) developed a scalable autoinduction culture media for E. coli based in soy-bean rather than in casein hydrolysates, (iii) enriched surface expression by screening different anchors from several prokaryotic sources (anchor + frgC(91-220) recombinant products), (iv) preserved frgC(91-220) antigenicity by inactivating bacteria by irreversible DNA-damage by means of Ciprofloxacin, and (v) increased safety using a repair-less E. coli strain as chassis for the spinycterins. These spinycterins protected fish against VNNV challenge with partial (Nmistic + frgC(91-220)) or total (YBEL + frgC(91-220)) levels of protection, in contrast to fish immunized with frgC(91-220) spinycterins(.) The proposed spinycterin platform has high levels of environmental safety and cost effectiveness and required no adjuvants, thus providing potential to further develop VNNV vaccines for sustainable aquaculture.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据