Document 0593 DOCN M9440593 TI Primary in vitro sensitization of human T-helper lymphocytes by peptides derived from the V3 loop of human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein. DT 9404 AU Billaud JN; Yagello M; Gluckman JC; CNRS URA 1463, CERVI, Hopital de la Pitie-Salpetriere, Paris,; France. SO Vaccine. 1994 Jan;12(1):46-55. Unique Identifier : AIDSLINE MED/94136014 AB To generate CD4+ T-helper cell lines, lymphocytes from HIV-seronegative subjects were primed in vitro with peptides derived from the V3 loop of HIV-1 gp120. Antigen-specific reactivity was inhibited by an anti-DR monoclonal antibody, indicating HLA-class II dependency, but peptides could be recognized in different HLA-class II contexts. Three sites on V3LAI and two on V3MN were identified as targets of the respective V3LAI- and V3MN-specific lines. Recognition of V3 peptides was isolate-specific. The lines did not react against whole gp160, which suggests that V3 may be differently presented when used as such rather than as part of the entire glycoprotein. Similar results were obtained in chimpanzees immunized in vivo against V3LAI. DE Amino Acid Sequence Animal Antigen-Presenting Cells/IMMUNOLOGY Cell Line Chimpansee troglodytes Flow Cytometry Histocompatibility Antigens Class II Human HIV Envelope Protein gp120/*IMMUNOLOGY HIV-1/*IMMUNOLOGY Leukocytes, Mononuclear/IMMUNOLOGY Lymphocyte Transformation Molecular Sequence Data Peptide Fragments/*IMMUNOLOGY Support, Non-U.S. Gov't T-Lymphocytes, Helper-Inducer/*IMMUNOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).