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  • 1
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    Inability of malaria vaccine to induce antibodies to a protective epitope within its sequence (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-08
    Description: Saimiri monkeys immunized with a recombinant protein containing 20 copies of the nine amino acid repeat of the Plasmodium vivax circumsporozoite (CS) protein developed high concentrations of antibodies to the repeat sequence and to sporozoites, but were not protected against challenge. After intravenous injection of an immunoglobulin G3 monoclonal antibody (NVS3) against irradiated P. vivax sporozoites, four of six monkeys were protected against sporozoite-induced malaria, and the remaining two animals took significantly longer to become parasitemic. Epitope mapping demonstrated that NVS3 recognizes only four (AGDR) of the nine amino acids within the repeat region of the P. vivax CS protein. The monkeys immunized with (DRAADGQPAG)20 did not produce antibodies to the protective epitope AGDR. Thus, determination of the fine specificity of protective immune responses may be critical to the construction of successful subunit vaccines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Charoenvit, Y -- Collins, W E -- Jones, T R -- Millet, P -- Yuan, L -- Campbell, G H -- Beaudoin, R L -- Broderson, J R -- Hoffman, S L -- New York, N.Y. -- Science. 1991 Feb 8;251(4994):668-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Infectious Diseases Department, Naval Medical Research Institute, Bethesda, MD 20889.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1704150" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/immunology ; Antibodies, Protozoan/*immunology ; Antigens, Protozoan/*immunology ; Epitopes ; Immunization, Passive ; Malaria/immunology/*prevention & control ; Molecular Sequence Data ; Peptide Fragments/immunology ; Plasmodium vivax/*immunology ; *Protozoan Proteins ; Saimiri ; Vaccines, Synthetic/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Sequence of the immunodominant epitope for the surface protein on sporozoites of Plasmodium vivax (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-20
    Description: Plasmodium vivax is one of the four malaria parasites that cause disease in humans. The structure of the immunodominant repeating peptide of the circumsporozoite (CS) protein of P. vivax was determined. A fragment of P. vivax DNA that encodes this tandemly repeating epitope was isolated by use of an oligonucleotide probe whose sequence is thought to be conserved in CS protein genes. DNA sequence analysis of the P. vivax clone indicates that the CS repeat is nine amino acids in length (Gly-Asp-Arg-Ala-Asp-Gly-Gln-Pro-Ala). The structure of the repeating region was confirmed with synthetic peptides and monoclonal antibodies directed against P. vivax sporozoites. This information should allow synthesis of a vaccine for P. vivax that is similar to the one being tested for P. falciparum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCutchan, T F -- Lal, A A -- de la Cruz, V F -- Miller, L H -- Maloy, W L -- Charoenvit, Y -- Beaudoin, R L -- Guerry, P -- Wistar, R Jr -- Hoffman, S L -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1381-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2416057" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Surface/*genetics ; Base Sequence ; DNA Restriction Enzymes ; Epitopes/*genetics ; *Genes ; Plasmodium vivax/*immunology ; Species Specificity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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    PAPER CURRENT
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