Document 0003 DOCN M94A0003 TI Signals transduced through the CD4 molecule on T lymphocytes activate NF-kappa B. DT 9412 AU Chirmule N; Kalyanaraman VS; Pahwa S; Department of Pediatrics, North Shore University Hospital-Cornell; University Medical College, Manhasset, NY 11030. SO Biochem Biophys Res Commun. 1994 Aug 30;203(1):498-505. Unique Identifier : AIDSLINE MED/94354848 AB We have demonstrated that native envelope glycoproteins of HIV-1, gp160 can induce activation of the transcription factor, NF-kappa B. The stimulatory effects of gp160 are mediated through the CD4 molecule, since pretreatment with soluble CD4 abrogates its activity. The gp160-induced NF-kappa B complex consists of p65, p50 and c-rel proteins. The stimulatory effect of gp160 on NF-kappa B activation is protein synthesis independent, is dependent upon protein tyrosine phosphorylation, and abrogated by inhibitors of protein kinase C. The gp160-mediated activation of NF-kappa B in CD4 positive T cells may be involved in biological effects, e.g., enhanced HIV replication, hypergammaglobulinemia, increased cytokine secretion, hypercellularity in bone marrow and apoptosis. DE Antigens, CD/*PHYSIOLOGY Antigens, CD4/DRUG EFFECTS/*PHYSIOLOGY Cell Line Cell Nucleus/METABOLISM Cells, Cultured Gene Products, env/*PHARMACOLOGY Human HIV/IMMUNOLOGY NF-kappa B/*METABOLISM Protein Precursors/*PHARMACOLOGY *Signal Transduction Support, U.S. Gov't, P.H.S. T-Lymphocytes/DRUG EFFECTS/IMMUNOLOGY/*METABOLISM Tumor Cells, Cultured T4 Lymphocytes/DRUG EFFECTS/IMMUNOLOGY/*PHYSIOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).