Document 0264 DOCN M9440264 TI Binding of human immunodeficiency virus type-1 (HIV-1) to partially purified membrane vesicles of lymphoblastoid cell line CEM. DT 9404 AU Benzair AB; Hirsch I; Chermann JC; Unite de Recherches INSERM sur les Retrovirus et Maladies; Associees (U.322), Campus Universitaire de Luminy, Marseille,; France. SO J Virol Methods. 1993 Dec 31;45(3):319-30. Unique Identifier : AIDSLINE MED/94149112 AB Binding of human immunodeficiency virus type 1 (HIV-1) to membrane of its target cells was studied by a quantitative and non-isotopic method called the viral membrane trapping method (VMTM). Membranes prepared from the CD4 positive lymphoblastoid cell line CEM and adsorbed to a solid support retained the ability to bind HIV-1. Similar results were obtained by Western dot blot and ELISA modification of VMTM, when membrane fraction was bound to nitrocellulose or polystyrene, respectively. In ELISA modification, viral association with 1 microgram of membranes coated on 96-well microplate was linear within a range of 3.75 micrograms to 60 micrograms of p24gag protein. The use of anti-CD4 mAbs, OKT4A and 13B8.2, identified CD4 molecule as a major HIV-1 binding component of membrane fraction. The procedure will allow the study of virus binding to this and to other possible additional receptor(s). DE Antibodies, Monoclonal Antigens, CD4/ANALYSIS/*METABOLISM Binding, Competitive Blotting, Western Cell Membrane/*MICROBIOLOGY Enzyme-Linked Immunosorbent Assay Human HIV Core Protein p24/ANALYSIS HIV-1/GROWTH & DEVELOPMENT/*METABOLISM Immunoblotting Reverse Transcriptase/ANALYSIS Sensitivity and Specificity Tumor Cells, Cultured T4 Lymphocytes/*MICROBIOLOGY Virology/*METHODS JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).