Immunogenicity of plant-produced porcine circovirus-like particles in mice.

Abstract:

:Porcine circovirus type 2 (PCV-2) is the main causative agent associated with a group of diseases collectively known as porcine circovirus-associated disease (PCAD). There is a significant economic strain on the global swine industry due to PCAD and the production of commercial PCV-2 vaccines is expensive. Plant expression systems are increasingly regarded as a viable technology to produce recombinant proteins for use as pharmaceutical agents and vaccines. However, successful production and purification of PCV-2 capsid protein (CP) from plants is an essential first step towards the goal of a plant-produced PCV-2 vaccine candidate. In this study, the PCV-2 CP was transiently expressed in Nicotiana benthamiana plants via agroinfiltration and PCV-2 CP was successfully purified using sucrose gradient ultracentrifugation. The CP self-assembled into virus-like particles (VLPs) resembling native virions and up to 6.5 mg of VLPs could be purified from 1 kg of leaf wet weight. Mice immunized with the plant-produced PCV-2 VLPs elicited specific antibody responses to PCV-2 CP. This is the first report describing the expression of PCV-2 CP in plants, the confirmation of its assembly into VLPs and the demonstration of their use to elicit a strong immune response in a mammalian model.

journal_name

Plant Biotechnol J

authors

Gunter CJ,Regnard GL,Rybicki EP,Hitzeroth II

doi

10.1111/pbi.13097

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

1751-1759

issue

9

eissn

1467-7644

issn

1467-7652

journal_volume

17

pub_type

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