Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
1994-2-25
pubmed:abstractText
The identification of defined T-helper (Th) cell determinants, particularly those recognized in the context of several MHC or HLA haplotypes, and their use to provide effective carrier help to short synthetic constructs representing a B-cell epitope have made it feasible to synthesize putatively potent immunogens. However, a number of crucial questions regarding immunogenicity of epitopic sequences need to be addressed before an optimally effective synthetic vaccine can be designed. The present study deals with the hybrid constructs incorporating a known B-cell epitope from the merozoite surface protein-1 (MSP-1) of a human malarial parasite, Plasmodium falciparum, and the promiscuous Th-cell epitope from tetanus toxin or from the circumsporozoite protein of P. falciparum. Here, we provide data which suggest that B- and T-cell determinants present in a hybrid construct could, in fact, provide reciprocal helper activity for antibody production; that antibodies to a Th-cell epitope may not necessarily block its helper function; and that junctional B-cell epitopes may be formed. All this may influence, in an unpredictable manner, the quality of protective immune response sought to be generated using the chimeric immunogens, with important implications for vaccine design.
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:volume
11
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1321-6
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed-meshheading:8296485-Amino Acid Sequence, pubmed-meshheading:8296485-Animals, pubmed-meshheading:8296485-B-Lymphocytes, pubmed-meshheading:8296485-Enzyme-Linked Immunosorbent Assay, pubmed-meshheading:8296485-Immunodominant Epitopes, pubmed-meshheading:8296485-Immunotoxins, pubmed-meshheading:8296485-Merozoite Surface Protein 1, pubmed-meshheading:8296485-Mice, pubmed-meshheading:8296485-Mice, Inbred Strains, pubmed-meshheading:8296485-Molecular Sequence Data, pubmed-meshheading:8296485-Peptides, pubmed-meshheading:8296485-Plasmodium falciparum, pubmed-meshheading:8296485-Protein Precursors, pubmed-meshheading:8296485-Protozoan Proteins, pubmed-meshheading:8296485-Rabbits, pubmed-meshheading:8296485-T-Lymphocytes, Helper-Inducer, pubmed-meshheading:8296485-Tetanus Toxin, pubmed-meshheading:8296485-Vaccines, Synthetic
pubmed:year
1993
pubmed:articleTitle
Co-dominant and reciprocal T-helper cell activity of epitopic sequences and formation of junctional B-cell determinants in synthetic T:B chimeric immunogens.
pubmed:affiliation
International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India.
pubmed:publicationType
Journal Article