PMID- 11394884 OWN - NLM STAT- MEDLINE DCOM- 20010712 LR - 20181130 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 284 IP - 2 DP - 2001 Jun 8 TI - Amino-terminal fragment of urokinase-type plasminogen activator inhibits HIV-1 replication. PG - 346-51 AB - CD8+ T lymphocytes have been shown to produce unidentified soluble factors active in suppressing HIV-1 replication. In this study, we purified an HIV-1 suppressing activity from the culture supernatant of an immortalized CD8+ T cell clone, derived from an HIV-1 infected long-term nonprogressor, and identified this activity as the amino-terminal fragment (ATF) of urokinase-type plasminogen activator (uPA). ATF is catalytically inactive, but suppresses the release of viral particles from the HIV-1 infected cell lines via binding to its receptor CD87. In contrast, cell proliferation and the secretion of an HIV-1 LTR driven reporter gene product were not affected by ATF. These findings suggest that ATF may inhibit the assembly and budding of HIV-1, which provides a novel therapeutic strategy for AIDS. CI - Copyright 2001 Academic Press. FAU - Wada, M AU - Wada M AD - Laboratories for Bioengineering and Research, JCR Pharmaceuticals Company, Ltd., 2-2-10 Murotani, Nishi-ku, Kobe, 651-2241, Japan. wada-m@jcrpharm.co.jp FAU - Wada, N A AU - Wada NA FAU - Shirono, H AU - Shirono H FAU - Taniguchi, K AU - Taniguchi K FAU - Tsuchie, H AU - Tsuchie H FAU - Koga, J AU - Koga J LA - eng PT - Journal Article PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Culture Media, Conditioned) RN - 0 (Gene Products, gag) RN - 0 (HIV Antigens) RN - 0 (PLAUR protein, human) RN - 0 (Peptide Fragments) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Urokinase Plasminogen Activator) RN - 0 (Viral Proteins) RN - 0 (gag Gene Products, Human Immunodeficiency Virus) RN - 0 (p17 protein, Human Immunodeficiency Virus Type 1) RN - EC 3.4.21.73 (Urokinase-Type Plasminogen Activator) SB - IM MH - CD4-Positive T-Lymphocytes/cytology/drug effects/metabolism/virology MH - CD8-Positive T-Lymphocytes/cytology/*metabolism MH - Cell Division/drug effects MH - Cells, Cultured MH - Clone Cells MH - Coculture Techniques MH - Culture Media, Conditioned/chemistry/pharmacology MH - Dose-Response Relationship, Drug MH - Gene Products, gag/metabolism MH - Genes, Reporter/drug effects/genetics MH - HIV Antigens MH - HIV Infections/*drug therapy/metabolism MH - HIV Long Terminal Repeat/genetics MH - HIV-1/*drug effects/growth & development MH - Humans MH - Peptide Fragments/chemistry/*pharmacology MH - Receptors, Cell Surface/antagonists & inhibitors/metabolism MH - Receptors, Urokinase Plasminogen Activator MH - Sarcoma, Kaposi/metabolism MH - Survivors MH - Transfection MH - Urokinase-Type Plasminogen Activator/chemistry/*pharmacology MH - *Viral Proteins MH - Virus Replication/*drug effects MH - gag Gene Products, Human Immunodeficiency Virus EDAT- 2001/06/08 10:00 MHDA- 2001/07/13 10:01 CRDT- 2001/06/08 10:00 PHST- 2001/06/08 10:00 [pubmed] PHST- 2001/07/13 10:01 [medline] PHST- 2001/06/08 10:00 [entrez] AID - S0006-291X(01)94965-4 [pii] AID - 10.1006/bbrc.2001.4965 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2001 Jun 8;284(2):346-51. doi: 10.1006/bbrc.2001.4965.