title: [Suppression of the human immunodeficiency virus in cultured cells by 5'-phosphites of 3'-azido-2',3'-dideoxynucleosides].
abstract: 5'-Phosphites (5'-hydrogenphosphonates) of 3'-azido-2'-, 3'-dideoxynucleosides are shown to be effective inhibitors of the human immunodeficiency virus (HIV-1) in MT4 cell culture. 5'-Phosphite of 3'-azido-2', 3'-dideoxythymidine was the most active among these compounds and even a little more active as compared to the well-known anti-AIDS drug 3'-azido-2',3'-dideoxythymidine; at the same time 5'-phosphites of 3'-azido-2',3' -dideoxynucleosides with adenine, guanine and cytosine bases were more active than the corresponding nucleosides. The toxicity of all four phosphites was comparatively low and the equimolar mixture of all four phosphites was 2-3 fold less toxic than each of them separately. Data on the decreased toxicity of the phosphite mixture are explained from the viewpoint of a decreased pool disbalance of natural 2'-deoxynucleoside 5'-triphosphates in cells; a significant pool disbalance is developed in the case of 3'-azido-2',3'-dideoxythymidine action.
authors.forename: E V
authors.initials: EV
authors.lastname: Karamov
authors.forename: V V
authors.initials: VV
authors.lastname: Lukashov
authors.forename: N B
authors.initials: NB
authors.lastname: Tarusova
authors.forename: G V
authors.initials: GV
authors.lastname: Kornilaeva
authors.forename: M A
authors.initials: MA
authors.lastname: Rodova
authors.forename: M K
authors.initials: MK
authors.lastname: Kukhanova
authors.forename: A A
authors.initials: AA
authors.lastname: Kraevskiĭ
mesh_terms: D000998:Antiviral Agents / Q000494:pharmacology*; D002478:Cells, Cultured; D015224:Dideoxynucleosides / Q000494:pharmacology* / Q000633:toxicity; D015497:HIV-1 / Q000187:drug effects*; D007124:Immunoenzyme Techniques; D012194:RNA-Directed DNA Polymerase / Q000378:metabolism; D018894:Reverse Transcriptase Inhibitors; D015215:Zidovudine / Q000031:analogs & derivatives / Q000494:pharmacology / Q000633:toxicity
chemical_list: D000998:Antiviral Agents; D015224:Dideoxynucleosides; D018894:Reverse Transcriptase Inhibitors; D015215:Zidovudine; D012194:RNA-Directed DNA Polymerase
vernacular_title: Podavlenie virusa immunodefitsita cheloveka v kul'ture kletok 5'-fosfitami 3'-azido-2',3'-didezoksinukleozidov.