Tenofovir diphosphate (TFV-DP) is a competitive DNA polymerases inhibitor (with respect to dATP) and a substrate of HIV type 1 (HIV-1) reverse transcriptase (RT)[1].
Lersivirine(UK-453061) is a next-generation non-nucleoside reverse transcriptase inhibitor (NNRTI, IC50=119 nM) with a unique resistance profile that exhibits potent antiretroviral activity against wild-type human immunodeficiency virus and clinically relevant NNRTI-resistant strains.IC50 value: 0.119 uM [1]Target: NNRTIUK-453061(Compound 5) demonstrated excellent activity against large panels of wild type and drug-resistant HIV consistent with the encouraging profile demonstrated against the isolated RT enzymes. Compound 5 can be readily prepared in multi-gram quantities by virtue of the efficient and concise synthetic route. The compound also has good aqueous solubility and formulation characteristics which enable further in vivo evaluation. Clinical trials evaluating the potential of 5 (UK-453,061, lersivirine) to treat HIV infection are proceeding and further progress will be reported in due course [1].At clinically relevant lersivirine doses (500-1,000 mg total daily dose), the mean plasma exposure of midazolam was reduced in a dose-dependent manner by 20-36 %. Co-administration of lersivirine 1,000 mg QD with OCs had minor PK effects, increasing ethinylestradiol exposure by 10 % and reducing levonorgestrel exposure by 13 % [2]. Mated Crl:CD1(ICR) mice were administered 0, 150, 350, and 500 mg/kg lersivirine once daily by oral gavage on gestation days 6 to 17, followed by cesarean section on gestation day 18. The first 2 days of dosing for the high-dose group were done at 250 mg/kg to allow induction of hepatic metabolizing enzymes, after which the dose was increased to 500 mg/kg/day [3].
Loviride (R 89439) is a non-nucleoside reverse transcriptase inhibitor (NNRTI), with IC50s of 0.3 µM for reverse transcriptase from HIV-1. Loviride (R 89439) inhibits HIV-1, HIV-2 and SIV replication in MT-4 cells[1].
Emtricitabine is a nucleoside reverse transcriptase inhibitor (NRTI) with an EC50 of 0.01 µM in PBMC cell. It is an antiviral drug for the treatment of HIV infection.
Tenofovir alafenamide hemifumarate (GS-7340 hemifumarate) is an investigational oral prodrug of Tenofovir. Tenofovir is a HIV-1 nucleotide reverse transcriptase inhibitor.
Emtricitabine triphosphate tetrasodium salt is the tetrasodium salt form of Emtricitabine triphosphate (HY-131596). However，Emtricitabine triphosphate ((-)-Emtricitabine triphosphate) is the phosphorylated anabolite of Emtricitabine (HY-17427)，a nucleoside reverse transcriptase inhibitor，targeting to HIV and HBV[1].
Zalcitabine is a potent nucleoside analogue reverse transcriptase inhibitor used in the treatment of HIV infection.
HIV-1 inhibitor-48 (compound 13o) is a novel non-nucleoside reverse transcriptase inhibitor (NNRTI) and exhibits anti-HIV-1 activity[1].
Nevirapine is a non-nucleoside inhibitor of HIV-1 reverse transcriptase used to treat and prevent HIV/AIDS; with a Ki of 270 μM.
Pyridoxal phosphate-d5 (Pyridoxal 5′-phosphate-d5) is the deuterium labeled Pyridoxal phosphate. Pyridoxal phosphate is the active form of vitamin B6, acts as an inhibitor of reverse transcriptases, and is used for the treatment of tardive dyskinesia[1][2].
M-MLV Reverse transcriptase (M-MLV RT) is a kind of Reverse transcriptase, from the moroni mouse leukemia virus (MoMLV)[1].
Morin 3-O-β-D-glucopyranoside is a natural flavonoid with antifungal, anticancer and antioxidant activities. Morin 3-O-β-D-glucopyranoside inhibits reverse transcriptase, protein-tyrosine kinase and xanthine oxidase, and also shows anti-HIV, antiarteriosclerotic, and superoxide scavenging activities[1].
Didanosine(Videx) is a reverse transcriptase inhibitor with an IC50 of 0.49 μM.Target: NRTIs; HIVDidanosine is a dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by a hydrogen. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. Didanosine is a potent inhibitor of HIV replication, acting as a chain-terminator of viral DNA by binding to reverse transcriptase. Didanosine demonstrated linear pharmacokinetic behavior over the dose ranges of 0.4 to 16.5 mg/kg intravenously and 0.8 to 10.2 mg/kg orally. Bioavailability of didanosine when administered as a solution with an antacid was approximately 43% for doses from 0.8 to 10.2 mg/kg in patients with AIDS and advanced AIDS-related complex. Bioavailability of didanosine from the citrate-phosphate-buffered solution, the formulation currently used in phase II and expanded access studies, was comparable to the formulation used in the phase I trials [1]. ddI might be responsible for fulminant hepatitis in all three AIDS patients. This toxic effect may be added to the list of potential adverse events occurring during ddI therapy [2].
Tenofovir Disoproxil Fumarate is a nucleotide reverse transcriptase inhibitor used to treat HIV and chronic Hepatitis B.
Abacavir hydrochloride is a competitive, orally active nucleoside reverse transcriptase inhibitor. Abacavir hydrochloride can inhibits the replication of HIV. Abacavir hydrochloride shows anticancer activity in prostate cancer cell lines. Abacavir hydrochloride can trespass the blood-brain-barrier and suppresses telomerase activity[1][2][3].
Abacavir sulfate (ABC) is a powerful nucleoside analog reverse transcriptase inhibitor (NRTI) used to treat HIV and AIDS. Target: NRTIAbacavir is a nucleoside reverse transcriptase inhibitor marketed since 1999 for the treatment of infection with the human immunodeficiency virus type 1 (HIV). Despite its clinical efficacy, abacavir administration has been associated with serious and sometimes fatal toxic events. Abacavir has been reported to undergo bioactivation in vitro, yielding reactive species that bind covalently to human serum albumin, but the haptenation mechanism and its significance to the toxic events induced by this anti-HIV drug have yet to be elucidated. The mechanism underlying abacavir hypersensitivity syndrome is related to the change in the HLA-B*5701 protein product. Abacavir binds with high specificity to the HLA-B*5701 protein, changing the shape and chemistry of the antigen-binding cleft. This results in a change in immunological tolerance and the subsequent activation of abacavir-specific cytotoxic T cells, which produce a systemic reaction known as abacavir hypersensitivity syndrome.
Dapivirine(TMC 120, TMC 120 R147681) is a NNRTI for HIV reverse transcriptase with IC50 of 24 nM, inhibits a broad panel of HIV-1 isolates from different classes, inclucing a wide range of NNRTI-resistant isolates.IC50 value: 24 nM [1]Target: HIV reverse transcriptase; NNRTIsin vitro: TMC120-R147681 is a diarylpyrimidine with high activity against wild-type and mutant HIV. A 24-h treatment with 1,000 nM UC-781 or 100 nM TMC120-R147681 prevented cell-free HIV infection, whereas 10-fold-higher concentrations blocked cell-associated HIV, TMC120-R147681 apparently blocked infection in the primary cultures at a 10 nM concentration, but secondary cultures revealed that a 100 nM concentration was needed to completely prevent proviral integration [1]. Dapivirine is well tolerated by epithelial cells, T cells, macrophages, and cervical tissue explants with CC50 (50% cytotoxic concentration) of 10 μM to 20 μM. Dapivirine potently inhibits infection by both X4- and R5-utilizing HIV-1 strains with IC50 of 1.46 nM in cell-based assays. Dapivirine potently inhibits HIV-1BaL infection of human ectocervical explant tissue in a dose-dependent manner, as evaluated by the reduction in both p24 release and provirus content in cultured explants. Dapivirine inhibits the transmission of virus to permissive T cells in a dose-dependent manner, with an IC50 of 0.1 nM. Dapivirine results in significant inhibition of HIV infection when explants are challenged with virus immediately with IC90 of 100 nM. Dapivirine is also able to inhibit viral dissemination by migratory cells [2].in vivo: Dapivirine-containing gel at vaginal level inhibits cell-associated HIV infection in mice [3]. More placebo (7 of 12) than Dapivirine (3 of 24) gel users has positive vaginal swab results, with white blood cells being the most common finding. Dapivirine (0.05%) results in Cmax of 715 pg/mL, AUC of 15 ng×h/mL and T1/2 of 89.87 hours in plasma after 14 days post-dose. Mean Dapivirine (0.05%) concentrations in vaginal fluids collected at the introitus, mid vagina, and cervix are in the range of 62-265 μg/g on day 1 [4].
Tenofovir Disoproxil Fumarate is a nucleotide reverse transcriptase inhibitor to treat HIV and chronic Hepatitis B.
Delavirdine mesylate is a potent non-nucleoside HIV-1 reverse transcriptase inhibitor (NNRTI) of HIV-1.
Delavirdine(U 90152) is a potent non-nucleoside reverse transcriptase inhibitor (NNRTI).IC50 Value: 0.26 uM (Recombinant HIV-1 RT) [1]Target: HIV-1 reverse transcriptase; NNRTIin vitro: U-90152 [1-(5-methanesulfonamido-1H-indol-2-yl-carbonyl)-4-[3-(1-methyl eth yl-amino)pyridinyl]piperazine], which inhibited recombinant HIV-1 RT at a 50% inhibitory concentration (IC50) of 0.26 microM (compared with IC50s of > 440 microM for DNA polymerases alpha and delta). U-90152 blocked the replication in peripheral blood lymphocytes of 25 primary HIV-1 isolates, including variants that were highly resistant to 3'-azido-2',3'-dideoxythymidine (AZT) or 2',3'-dideoxyinosine, with a mean 50% effective dose of 0.066 +/- 0.137 microM. U-90152 had low cellular cytotoxicity, causing less than 8% reduction in peripheral blood lymphocyte viability at 100 microM. In experiments assessing inhibition of the spread of HIV-1IIIB in cell cultures, U-90152 was much more effective than AZT. When approximately 500 HIV-1IIIB-infected MT-4 cells were mixed 1:1,000 with uninfected cells, 3 microM AZT delayed the evidence of rapid viral growth for 7 days. In contrast, 3 microM U-90152 totally prevented the spread of HIV-1, and death and/or dilution of the original inoculum of infected cells prevented renewed viral growth after U-90152 was removed at day 24 [1]. Asdelavirdine concentration was increased from 0 to 100 microM, the K(M) for diclofenac metabolism rose from 4.5+/-0.5 to 21+/-6 microM, and V(max) declined from 4.2+/-0.1 to 0.54+/-0.08 nmol/min/mg of protein, characteristic of mixed-type inhibition [2].in vivo: The mean values (+/- standard deviations) for the maximum concentration in serum (C(max)) of ritonavir, the area under the concentration-time curve from 0 to 12 h (AUC(0-12)), and the minimum concentration in serum (C(min)) of ritonavir before the addition of delavirdine were 14.8 +/- 6.7 micro M, 94 +/- 36 micro M. h, and 3.6 +/- 2.1 micro M, respectively. These same parameters were increased to 24.6 +/- 13.9 micro M, 154 +/- 83 micro M. h, and 6.52 +/- 4.85 micro M, respectively, after the addition of delavirdine(P is <0.05 for all comparisons). Delavirdine pharmacokinetic parameters in the presence of ritonavir included a C(max) of 23 +/- 16 micro M, an AUC(0-8) of 114 +/- 75 micro M. h, and a C(min) of 9.1 +/- 7.5 micro M [3].Toxicity: Clinical trial: Quality of Life of HIV-infected Participants Switched to Raltegravir Versus Other Antiretroviral Regimens. Phase 4
IQP-0528 is a highly potent nonnucleoside reverse transcriptase inhibitor (NNRTI). IQP-0528 shows nanomolar activity against both HIV-1 and HIV-2, with an HIV-1 EC50 of 0.2 nM and an HIV-2 EC50 of 100 nM[1].
Nigranoic acid is a triterpenoid separated from Schisandra chinensis. Nigranoic acid inhibits HIV-1 reverse transcriptase. Nigranoic acid exhibits protective effects on brain through PARP/AIF signaling pathway in cerebral ischemia-reperfusion animal model[1][2].
Tenofovir dsoproxil is a nucleotide reverse transcriptase inhibitor to treat HIV and chronic Hepatitis B.
Rilpivirine (R278474; TMC278) is a type of anti-HIV medicine called a non-nucleoside reverse transcriptase inhibitor (NNRTI).
Corilagin, a gallotannin, is isolated from Caesalpinia coriaria (Jacq.) Willd. Corilagin inhibits activity of reverse transcriptase of RNA tumor viruses. Corilagin inhibits the growth of Staphylococcus aureus with a MIC of 25 μg/mL. Corilagin shows good anti-tumor activity on hepatocellular carcinoma and ovarian cancer. Corilagin shows a low level of toxicity toward normal cells and tissues[1].
Azvudine is a potent nucleoside reverse transcriptase inhibitor (NRTI), with antiviral activity on HIV, HBV and HCV. Azvudine exerts highly potent inhibition on HIV-1 (EC50s ranging from 0.03 to 6.92 nM) and HIV-2 (EC50s ranging from 0.018 to 0.025 nM). Azvudine inhibits NRTI-resistant viral strains[1].
Dexelvucitabine (Reverset; d-d4FC), a Cytidine (HY-B0158) analog, is an orally active nucleoside reverse transcriptase inhibitor. Dexelvucitabine is a powerful drug against HIV-1-resistant viruses containing a thymidine analog and/or M184V mutation in the viral polymerase. Dexelvucitabine is a 2′-Deoxycytidine antiretroviral agent[1].
Elvucitabine is an L-nucleoside analogue. Elvucitabine is a potent nucleoside reverse transcriptase (RT) inhibitor. Elvucitabine can be used in research of viral infection[1].
Abacavir is a powerful nucleoside analog reverse transcriptase inhibitor (NRTI) used to treat HIV and AIDS. IC50 value:Target: NRTI; reverse transcriptase inhibitorAbacavir is a nucleoside reverse transcriptase inhibitor marketed since 1999 for the treatment of infection with the human immunodeficiency virus type 1 (HIV). Despite its clinical efficacy, abacavir administration has been associated with serious and sometimes fatal toxic events. Abacavir has been reported to undergo bioactivation in vitro, yielding reactive species that bind covalently to human serum albumin, but the haptenation mechanism and its significance to the toxic events induced by this anti-HIV drug have yet to be elucidated. The mechanism underlying abacavir hypersensitivity syndrome is related to the change in the HLA-B*5701 protein product. Abacavir binds with high specificity to the HLA-B*5701 protein, changing the shape and chemistry of the antigen-binding cleft. This results in a change in immunological tolerance and the subsequent activation of abacavir-specific cytotoxic T cells, which produce a systemic reaction known as abacavir hypersensitivity syndrome.
EFdA-TP is a potent nucleoside reverse transcriptase (RT) inhibitor. EFdA-TP inhibits RT-catalyzed DNA synthesis as an effective immediate or delayed chain terminator (ICT or DCT). EFdA-TP inhibits HIV-1 RT with multiple mechanisms[1].