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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
1994-1-6
pubmed:abstractText
Progress on the mapping of Th epitopes of tetanus toxin (tt) has been slow due to reliance on studies of clones. In this paper, human Th cell epitopes of tt were mapped using proliferation tests on PBMC in response to synthetic peptides. PBMC from nine donors were tested over the entire set of tt homologous overlapping dodecapeptides. The 1304 peptides were initially tested as 66 pools, each containing an average of 20 peptides. PBMC from individual donors responded to as few as 1 and as many as 17 of the 66 peptide pools. The sequences responsible for proliferation were identified for the two most frequently recognized pools, and for another two pools within a major immunodominant region. Three new epitope sequences were mapped in detail and based on their recognition by most individuals are likely to be promiscuous. A cocktail of peptides including the newly identified Th cell epitopes was able to induce proliferation in PBMC from 24 of 31 tetanus toxoid (TT)-responsive donors. This cocktail is a chemically defined reagent that can be used to quantitate in vitro Ag-specific Th cells in PBMC from most subjects, and may thus be useful for serial measurements of specific immunity such as in subjects undergoing immunotherapy or immunosuppressive treatment.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
151
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6175-84
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Mapping the major human T helper epitopes of tetanus toxin. The emerging picture.
pubmed:affiliation
Chiron Mimotopes Pty. Ltd., Clayton, Victoria, Australia.
pubmed:publicationType
Journal Article