Linked Life Data

11027814

Source:http://linkedlifedata.com/resource/pubmed/id/11027814

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4-5
pubmed:dateCreated
2000-12-19
pubmed:abstractText
This paper describes attempts to map the location of host-protective epitopes of a recombinant vaccine antigen by assessing the ability of truncated regions of the antigen to elicit protective immune responses in sheep. Sheep were immunised with three truncated regions (EG95-1, EG95-2 and EG95-3) of the hydatid vaccine antigen, EG95. These regions overlapped each other and corresponded to amino acids 1-70 (EG95-1), 51-106 (EG95-2) and 89-153 (EG95-3) of the full length recombinant protein. Each region elicited antibody which reacted with the parent antigen, although these reactivities were a small proportion of the level of reactivity generated by immunisation with the full length antigen. Antisera raised against each of the truncated proteins reacted with the native parasite antigen. In vaccination and parasite challenge trials in sheep, none of the truncated regions elicited significant protection against challenge infection or antibody which was lethal to the parasite in vitro. Antibodies from sheep immunised with the combination of all three overlapping truncations elicited a comparatively low but significant level of lysis of the parasite in vitro. These antigens did not inhibit anti-EG95 antibody reactivity with EG95 nor did they inhibit in vitro oncosphere killing induced by anti-EG95 antibodies. These results indicate that the major part of the immune response induced by EG95 vaccination is directed against conformational epitopes and that the host-protective epitope(s) is/are conformational.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0264-410X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
498-507
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Protection against hydatid disease induced with the EG95 vaccine is associated with conformational epitopes.
pubmed:affiliation
Molecular Parasitology Laboratory, The University of Melbourne, Princes Highway, Werribee, Victoria, 3030, Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't