title: Antiviral activity of derivatized dextrans on HIV-1 infection of primary macrophages and blood lymphocytes.
abstract: The present study demonstrates at the molecular level that dextran derivatives carboxymethyl dextran benzylamine (CMDB) and carboxymethyl dextran benzylamine sulfonate (CMDBS), characterized by a statistical distribution of anionic carboxylic groups, hydrophobic benzylamide units, and/or sulfonate moieties, interact with HIV-1 LAI gp120 and V3 consensus clades B domain. Only limited interaction was observed with carboxy-methyl dextran (CMD) or dextran (D) under the same conditions. CMDBS and CMDB (1 microM) strongly inhibited HIV-1 infection of primary macrophages and primary CD4+ lymphocytes by macrophage-tropic and T lymphocyte-tropic strains, respectively, while D or CMD had more limited effects on M-tropic infection of primary macrophages and exert no inhibitory effect on M- or T-tropic infection of primary lymphocytes. CMDBS and CMDB (1 microM) had limited but significant effect on oligomerized soluble recombinant gp120 binding to primary macrophages while they clearly inhibit (> 50%) such binding to primary lymphocytes. In conclusion, the inhibitory effect of CMDB and the CMDBS, is observed for HIV M- and T-tropic strain infections of primary lymphocytes and macrophages which indicates that these compounds interfere with steps of HIV replicative cycle which neither depend on the virus nor on the cell.
authors.affiliation: Laboratoire de Biologie Cellulaire, Université Paris-Nord, Bobigny, France.
authors.forename: N
authors.initials: N
authors.lastname: Seddiki
authors.forename: E
authors.initials: E
authors.lastname: Mbemba
authors.forename: D
authors.initials: D
authors.lastname: Letourneur
authors.forename: L
authors.initials: L
authors.lastname: Ylisastigui
authors.forename: A
authors.initials: A
authors.lastname: Benjouad
authors.forename: L
authors.initials: L
authors.lastname: Saffar
authors.forename: J C
authors.initials: JC
authors.lastname: Gluckman
authors.forename: J
authors.initials: J
authors.lastname: Jozefonvicz
authors.forename: L
authors.initials: L
authors.lastname: Gattegno
mesh_terms: D000595:Amino Acid Sequence; D019380:Anti-HIV Agents / Q000378:metabolism / Q000494:pharmacology*; D002478:Cells, Cultured; D003911:Dextrans / Q000378:metabolism / Q000494:pharmacology*; D016655:HIV Core Protein p24 / Q000096:biosynthesis; D015699:HIV Envelope Protein gp120 / Q000378:metabolism; D015497:HIV-1 / Q000187:drug effects*; D006801:Humans; D008214:Lymphocytes / Q000821:virology*; D008264:Macrophages / Q000821:virology*; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000378:metabolism; D011485:Protein Binding
chemical_list: D019380:Anti-HIV Agents; D003911:Dextrans; D016655:HIV Core Protein p24; D015699:HIV Envelope Protein gp120; C059762:HIV envelope protein gp120 (305-321); D010446:Peptide Fragments