BIOMAT Database Logo BIOMAT Database Logo

ATP-dependent removal of nucleoside reverse transcriptase inhibitors by human immunodeficiency virus type 1 reverse transcriptase. 2002

Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Gilead Sciences, Inc., Foster City, California 94404, USA.

Removal of nucleoside chain terminator inhibitors mediated by human immunodeficiency virus (HIV) reverse transcriptase (RT) using ATP as an acceptor molecule has been proposed as a novel mechanism of HIV resistance. Recombinant wild-type and mutant HIV type 1 (HIV-1) RT enzymes with thymidine analog resistance mutations D67N, K70R, and T215Y were analyzed for their ability to remove eight nucleoside reverse transcriptase inhibitors in the presence of physiological concentrations of ATP. The order for the rate of removal of the eight inhibitors by the mutant RT enzyme was zidovudine (AZT) > stavudine (d4T) >> zalcitabine (ddC) > abacavir > amdoxovir (DAPD) > lamivudine (3TC) > didanosine (ddI) > tenofovir. Thymidine analogs AZT and d4T were the most significantly removed by the mutant enzyme, suggesting that removal of these inhibitors by the ATP-dependent removal mechanism contributes to the AZT and d4T resistance observed in patients with HIV expressing thymidine analog resistance mutations. ATP-dependent removal of tenofovir was 22- to 35-fold less efficient than removal of d4T and AZT, respectively. The addition of ATP and the next complementary deoxynucleoside triphosphate caused a reduction of ATP-mediated removal of d4T, ddC, and DAPD, while AZT and abacavir removal was unaffected. The reduction of d4T, ddC, and DAPD removal in the presence of the deoxynucleoside triphosphate could explain the minor changes in susceptibility to these drugs observed in conventional in vitro phenotypic assays using cells that have higher deoxynucleoside triphosphate pools. The minimal removal of abacavir, ddC, DAPD, 3TC, ddI, and tenofovir is consistent with the minor changes in susceptibility to these drugs observed for HIV mutants with thymidine analog resistance mutations.

UI MeSH Term Description Entries
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D009943 Organophosphorus Compounds Organic compounds that contain phosphorus as an integral part of the molecule. Included under this heading is broad array of synthetic compounds that are used as PESTICIDES and DRUGS. Organophosphorus Compound,Organopyrophosphorus Compound,Organopyrophosphorus Compounds,Compound, Organophosphorus,Compound, Organopyrophosphorus,Compounds, Organophosphorus,Compounds, Organopyrophosphorus
D011994 Recombinant Proteins Proteins prepared by recombinant DNA technology. Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002384 Catalysis The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction. Catalyses
D000068698 Tenofovir An adenine analog REVERSE TRANSCRIPTASE INHIBITOR with antiviral activity against HIV-1 and HEPATITIS B. It is used to treat HIV INFECTIONS and CHRONIC HEPATITIS B, in combination with other ANTIVIRAL AGENTS, due to the emergence of ANTIVIRAL DRUG RESISTANCE when it is used alone. (R)-9-(2-phosphonylmethoxypropyl)adenine,9-(2-Phosphonomethoxypropyl)adenine,9-(2-Phosphonylmethoxypropyl)adenine,9-(2-Phosphonylmethoxypropyl)adenine, (+-)-isomer,9-(2-Phosphonylmethoxypropyl)adenine, (R)-isomer - T357098,9-(2-Phosphonylmethoxypropyl)adenine, (S)-isomer,9-PMPA (tenofovir),Tenofovir Disoproxil,Tenofovir Disoproxil Fumarate,Viread,Disoproxil Fumarate, Tenofovir,Disoproxil, Tenofovir,Fumarate, Tenofovir Disoproxil
D000225 Adenine A purine base and a fundamental unit of ADENINE NUCLEOTIDES. Vitamin B 4,4, Vitamin B,B 4, Vitamin
D000255 Adenosine Triphosphate An adenine nucleotide containing three phosphate groups esterified to the sugar moiety. In addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter. ATP,Adenosine Triphosphate, Calcium Salt,Adenosine Triphosphate, Chromium Salt,Adenosine Triphosphate, Magnesium Salt,Adenosine Triphosphate, Manganese Salt,Adenylpyrophosphate,CaATP,CrATP,Manganese Adenosine Triphosphate,MgATP,MnATP,ATP-MgCl2,Adenosine Triphosphate, Chromium Ammonium Salt,Adenosine Triphosphate, Magnesium Chloride,Atriphos,Chromium Adenosine Triphosphate,Cr(H2O)4 ATP,Magnesium Adenosine Triphosphate,Striadyne,ATP MgCl2
D014779 Virus Replication The process of intracellular viral multiplication, consisting of the synthesis of PROTEINS; NUCLEIC ACIDS; and sometimes LIPIDS, and their assembly into a new infectious particle. Viral Replication,Replication, Viral,Replication, Virus,Replications, Viral,Replications, Virus,Viral Replications,Virus Replications
D015215 Zidovudine A dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by an azido group. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. The compound is a potent inhibitor of HIV replication, acting as a chain-terminator of viral DNA during reverse transcription. It improves immunologic function, partially reverses the HIV-induced neurological dysfunction, and improves certain other clinical abnormalities associated with AIDS. Its principal toxic effect is dose-dependent suppression of bone marrow, resulting in anemia and leukopenia. AZT (Antiviral),Azidothymidine,3'-Azido-2',3'-Dideoxythymidine,3'-Azido-3'-deoxythymidine,AZT Antiviral,AZT, Antiviral,BW A509U,BWA-509U,Retrovir,3' Azido 2',3' Dideoxythymidine,3' Azido 3' deoxythymidine,Antiviral AZT,BWA 509U,BWA509U
D054303 HIV Reverse Transcriptase A reverse transcriptase encoded by the POL GENE of HIV. It is a heterodimer of 66 kDa and 51 kDa subunits that are derived from a common precursor protein. The heterodimer also includes an RNAse H activity (RIBONUCLEASE H, HUMAN IMMUNODEFICIENCY VIRUS) that plays an essential role the viral replication process. Reverse Transcriptase, HIV,Reverse Transcriptase, Human Immunodeficiency Virus,Transcriptase, HIV Reverse

Related Publications

Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Nucleoside inhibitors of human immunodeficiency virus type 1 reverse transcriptase.
January 2004, Current topics in medicinal chemistry,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Nucleoside reverse transcriptase inhibitors and resistance of human immunodeficiency virus type 1.
March 1995, The Journal of infectious diseases,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Anti-human immunodeficiency virus type 1 activities of novel non-nucleoside reverse transcriptase inhibitors.
February 1994, The Journal of antimicrobial chemotherapy,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Resistance to nucleoside analog reverse transcriptase inhibitors mediated by human immunodeficiency virus type 1 p6 protein.
October 2001, Journal of virology,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Current status of the non-nucleoside reverse transcriptase inhibitors of human immunodeficiency virus type 1.
January 2004, Current topics in medicinal chemistry,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Susceptibility of feline immunodeficiency virus/human immunodeficiency virus type 1 reverse transcriptase chimeras to non-nucleoside RT inhibitors.
January 2004, Molecular pharmacology,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
[Non-nucleoside reverse transcriptase inhibitors of the human immunodeficiency virus].
November 1998, Medicina clinica,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Molecular mechanism by which the K70E mutation in human immunodeficiency virus type 1 reverse transcriptase confers resistance to nucleoside reverse transcriptase inhibitors.
January 2007, Antimicrobial agents and chemotherapy,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Dipyridodiazepinone analogs as human immunodeficiency virus type 1-specific non-nucleoside reverse transcriptase inhibitors: an overview.
January 2010, Current medicinal chemistry,
Lisa K Naeger, and Nicolas A Margot, and Michael D Miller
Human Immunodeficiency Virus type 1 reverse transcriptase.
February 1996, Biological chemistry Hoppe-Seyler,
Copied contents to your clipboard!