Expression of a modified Mannheimia haemolytica GS60 outer membrane lipoprotein in transgenic alfalfa for the development of an edible vaccine against bovine pneumonic pasteurellosis
The GS60 antigen is one of the protective antigens of Mannheimia haemolytica A1. GS60 contains conserved domains belonging to the LppC family of bacterial outer membrane lipoproteins. A high antibody titer to GS60 has been shown to be significantly correlated with resistance to pneumonic pasteurello...
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Published in | Journal of biotechnology Vol. 135; no. 2; pp. 224 - 231 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Lausanne
Elsevier B.V
01.06.2008
Amsterdam [New York, NY]: Elsevier New York, NY Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | The GS60 antigen is one of the protective antigens of
Mannheimia haemolytica A1. GS60 contains conserved domains belonging to the LppC family of bacterial outer membrane lipoproteins. A high antibody titer to GS60 has been shown to be significantly correlated with resistance to pneumonic pasteurellosis. Calves vaccinated with a commercial vaccine (Presponse™) and demonstrating protection against
M. haemolytica A1 produced antibodies directed against GS60. Alfalfa was chosen as the platform for an edible vaccine.
Agrobacterium tumefaciens was used to mediate the transformation of alfalfa with sequences encoding a slightly shortened derivative of the GS60 antigen (GS60
54). Stable transgenic alfalfa lines were recovered and production of GS60
54 was examined by Western immunoblot analysis. The antigen is stable in dried transgenic plant material stored at ambient temperature for more than a year. The plant-produced GS60
54 protein was shown to be immunogenic when injected into rabbits. Feeding of the dried transgenic alfalfa expressing the GS60
54 to rabbits is capable of inducing seroconversion, suggesting that GS60
54 could be an effective oral antigen for stimulating mucosal immune responses. |
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Bibliography: | http://dx.doi.org/10.1016/j.jbiotec.2008.03.006 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0168-1656 1873-4863 |
DOI: | 10.1016/j.jbiotec.2008.03.006 |