HIV-1 protease-IN-2 is a potent HIV-1 protease inhibitor with an IC50 of 2.53 nM. HIV-1 protease-IN-2 shows antiviral activity against DRV (Darunavir)-sensitive or DRV-resistant HIV-1 variants[1].
Cytochalasin A is a cell-permeable fungal toxin that is an oxidized derivative of cytochalasin B. Cytochalasin A is an inhibitor of HIV-1 protease (IC50=3 μM) and inhibits actin polymerization and interferes with microtubule assembly by reacting with sulfhydryl groups. Antibiotic and fungicidal activitives[1][2].
Darunavir(TMC114) is an HIV protease inhibitor.IC50 Value: Target: HIV ProteaseDarunavir HIV-1 antiviral structurally is similar to amprenavir and it is second generation HIV-1-protease inhibitor. Darunavir is a drug used to treat HIV infection. It is in the protease inhibitor class. Prezista is an OARAC recommended treatment option for treatment-naive and treatment-experienced adults and adolescents.
Arg-Val-(Nle-p-nitro)-Phe-Glu-Ala-Nle-NH2 is a fluorogenic substrate of HIV-1 protease. Arg-Val-(Nle-p-nitro)-Phe-Glu-Ala-Nle-NH2 can be used to test HIV-1 protease activity[1].
L-689502 is a potent inhibitor of HIV-l protease with an IC50 of 1 nM.
JE-2147 (AG1776) is a potent dipeptide protease inhibitor with a Ki of 0.33 nM for HIV-1 protease. JE-2147 has effective activities against a wide spectrum of HIV-1, HIV-2, simian immunodeficiency virus, and various clinical HIV-1 strains in vitro[1][2].
Ganoderic acid B is a triterpene isolated from a mushroom Ganoderma lucidum. Ganoderic acid B inhibits the activation of Epstein-Barr virus (EBV) antigens as telomerase inhibitor. Ganoderic acid B is a moderately active inhibitor against HIV-1 protease[1][2][3].
Escin IA is a triterpene saponin isolated from horse chestnut, which inhibits HIV-1 protease with IC50 values of 35 μM. Escin IA has anti-TNBC metastasis activity, and its action mechanisms involved inhibition of epithelial-mesenchymal transition process by down-regulating LOXL2 expression[1][2].
Pepstatin (Pepstatin A) acetate is a specific, orally active aspartic protease inhibitor produced by actinomycetes, with IC50s of 4.5 nM, 6.2 nM, 150 nM, 290 nM, 520 nM and 260 nM for hemoglobin-pepsin, hemoglobin-proctase, casein-pepsin, casein-proctase, casein-acid protease and hemoglobin-acid protease, respectively. Pepstatin acetate also inhibits HIV protease[1][2].
HIV-1 protease-IN-11 (compound 34a) is a HIV-1 protease inhibitor with an IC50 of 0.41 nM. HIV-1 protease-IN-11 also exhibits significant activity against drug-resistant variant[1].
Mvt-101 is a hexapeptide-based inhibitor of HIV-1 protease. Mvt-101 is also reduced-peptide-bond inhibitor. Mvt-101 inhibits reproduction of the HIV virus by blocking protease action[1].
SKF107457 is an HIV-1 protease inhibitor that can be used in AIDS research[1][2].
Rosamultin is a 19 α-hydroxyursane-type triterpenoid isolated from Potentilla anserina L. Rosamultin has inhibitory effects against HIV-1 protease[1]. Rosamultin has the potential for treating H2O2-induced oxidative stress injury through its antioxidant and antiapoptosis effects[2].
Ritonavir-d6 (ABT 538-d6) is the deuterium labeled Ritonavir. Ritonavir (ABT 538) is an inhibitor of HIV protease used to treat HIV infection and AIDS. Ritonavir is also a SARS-CoV 3CLpro inhibitor with an IC50 of 1.61 μM[1][2].
Ganoderic acid GS-1, a highly oxygenated lanostane-type triterpenoid, has anti-HIV-1 protease activities with an IC50 of 58 μM[1].
Atazanavir(BMS-232632) is an highly potent HIV-1 protease inhibitor.IC50 value:Target: HIV-1 protease inhibitorAtazanavir sulfate is a sulfate salt form of atazanavir that is an highly potent HIV-1 protease inhibitor. It has a pharmacokinetic profile that supports once-daily dosing and has demonstrated a unique resistance profile and superior virologic potency compared with other antiretrovirals in vitro. In subjects with HIV, atazanavir (400 mg once daily) produced rapid and sustained improvements in viral load and CD4 counts in both antiretroviral-naive as well as previously treated patients when used in combination with dual nucleoside reverse transcriptase inhibitor (NRTI) treatment [1].After intravenous (iv), oral (po) and intraportal (ip) administration of ATV at a dosage of 7 mg/kg, AUCs in HL rats were 12.41, 5.24 and 8.89 microg/mLh, respectively, and were significantly higher than those in control rats (4.09, 1.70 and 3.38 microg/mLh). Despite the decrease of distribution volume (Vd(ss)), the terminal half-life (t(1/2)) in HL tended to be shorter than in control, and hepatic distribution of ATV in HL rats was 4.8-fold increases. These results suggested that the uptake of ATV into liver might counteract the decrease of Vd(ss). On the other hand, there was no significant difference in bioavailability, and the lymphatic transport to AUC showed no statistical change. In conclusion, although the protein binding rate and AUC were significantly increased, the pharmacokinetics of ATV might be tolerated in HL [2].Clinical indications: HIV-1 infection Toxicity: torsades de pointes
R-87366 is a water-soluble human immunodeficiency virus (HIV) protease inhibitor. R-87366 has potent inhibitory for HIV protease with a Ki value of 11 nM. R-87366 can be used for the research of anti-human immunodeficiency virus (HIV)[1].
HIV protease-IN-1 (compound 1·succinate) is a potent HIV protease non-peptidic inhibitor, can be used to research AIDS[1].
Herpes virus inhibitor 2 is a herpes virus inhibitor and disrupts herpes virus ribonucleotide reductase quaternary structure. Herpes virus inhibitor 2 inhibits viral replication[1][2].
Tipranavir inhibits the enzymatic activity and dimerization of HIV-1 protease, exerts potent activity against multi-protease inhibitor (PI)-resistant HIV-1 isolates with IC50s of 66-410 nM.
Hinnuliquinone is a C2-symmetric dimeric non-peptide fungal metabolite inhibitor of HIV-1 protease. Hinnuliquinone is a bis-indolyl-2,5-dihydroxybenzoquinone pigment, that can be isolated from Nodulisphorium hinnuleum[1][2].
Indinavir sulfate(MK-639 sulfate; L735524 sulfate ) is a potent and specific HIV protease inhibitor that appears to have good oral bioavailability.Target: HIV ProteaseIndinavir(MK-639) is a protease inhibitor used as a component of highly active antiretroviral therapy (HAART) to treat HIV infection and AIDS.MK-639 appears to have significant dose-related antiviral activity and is well tolerated [1]. Inhibition constants (K(i)) of the antiviral drug indinavir for the reaction catalyzed by the mutant enzymes were about threefold and 50-fold higher for PR(L24I) and PR(I50V), respectively, relative to PR and PR(G73S). The dimer dissociation constant (K(d)) was estimated to be approximately 20 nM for both PR(L24I) and PR(I50V), and below 5 nM for PR(G73S) and PR. Crystal structures of the mutants PR(L24I), PR(I50V) and PR(G73S) were determined in complexes with indinavir, or the p2/NC substrate analog at resolutions of 1.10-1.50 Angstrom [2].
Lopinavir-d8 (ABT-378-d8) is the deuterium labeled Lopinavir. Lopinavir (ABT-378) is a highly potent, selective peptidomimetic inhibitor of the HIV-1 protease, with Kis of 1.3 to 3.6 pM for wild-type and mutant HIV protease. Lopinavir acts by arresting maturation of HIV-1 thereby blocking its infectivity[1][2]. Lopinavir is also a SARS-CoV 3CLpro inhibitor with an IC50 of 14.2 μM[3].
Saquinavir-d9 (Ro 31-8959-d9) is the deuterium labeled Saquinavir. Saquinavir(Ro 31-8959) is an HIV Protease inhibitor used in antiretroviral therapy. Saquinavir is also a SARS-CoV 3CLpro inhibitor with an IC50 of 1.36 μM[1][2].
Lopinavir is a potent HIV protease inhibitor with Ki of 1.3 pM.Target: HIV proteaseLopinavir is a potent inhibitor of Rh123 efflux in Caco-2 monolayers with IC50 of 1.7 mM. Lopinavir exposure (72 hours) in LS 180V cells reduces the content of intracellular Rh123. Lopinavir induces P-glycoprotein immunoreactive protein and messenger RNA levels in LS 180V cells. Lopinavir inhibits subtype C clone C6 with IC50 of 9.4 nM. Lopinavir inhibits CYP3A with IC50 of 7.3 mM in human liver microsomes, while produces negligible or weak inhibition of human CYP1A2, 2B6, 2C9, 2C19 and 2D6. Lopinavir (10 mg/kg, orally) results in Cmax of 0.8 μg/mL and oral bioavailability of 25% in rats.
Darunavir ethanolate (TMC114 ethanolate) is a potent HIV protease inhibitor used to treat and prevent HIV/AIDS. Darunavir has a Ki of 1 nM for wild type HIV-1 protease.
HIV-1 protease-IN-12 (compound 35b) is a HIV-1 protease inhibitor with an IC50 of 0.51 nM. HIV-1 protease-IN-12 also inhibits drug-resistant variant[1].
Tipranavir-d4 (PNU-140690-d4) is the deuterium labeled Tipranavir. Tipranavir (PNU-140690) inhibits the enzymatic activity and dimerization of HIV-1 protease, exerts potent activity against multi-protease inhibitor (PI)-resistant HIV-1 isolates with IC50s of 66-410 nM[1][2]. Tipranavir inhibits SARS-CoV-2 3CLpro activity[3].
Nelfinavir(AG-1341) is a potent and orally bioavailable human immunodeficiency virus HIV-1 protease inhibitor (Ki=2 nM) and is widely prescribed in combination with HIV reverse transcriptase inhibitors for the treatment of HIV infection. IC50 Valur: 2 nM (Ki for HIV-1 protease) [2]Target: HIV Proteasein vitro: In vitro exposure (72 hours) of HAECs to NEL (0.25-2 μg/mL) decreased both basal (2.5-fold) and insulin-induced NO production (4- to 5-fold). NEL suppressed insulin-induced phosphorylation of both Akt and eNOS at serine residues 473 and 1177, respectively. NEL decreased tyrosine phosphorylation of IR-β, IRS-1, and PI3K. Coexposure to troglitazone (TRO; 250 nM) ameliorated the suppressive effects of NEL on insulin signaling and NO production. Coexposure to TRO also increased eNOS expression in NEL-treated HAECs [1]. AG1343 is a potent enzyme inhibitor (Ki = 2 nM) and antiviral agent (HIV-1 ED50 = 14 nM). An X-ray cocrystal structure of the enzyme-AG1343 complex reveals how the novel thiophenyl ether and phenol-amide substituents of the inhibitor interact with the S1 and S2 subsites of HIV-1 protease, respectively [2].in vivo: In vivo studies indicate that AG1343 is well absorbed orally in a variety of species and possesses favorable pharmacokinetic properties in humans [2].
Pepstatin is a specific aspartic protease inhibitor produced by actinomycetes, with IC50s of 4.5 nM, 6.2 nM, 150 nM, 290 nM, 520 nM and 260 nM for hemoglobin-pepsin, hemoglobin-proctase, casein-pepsin, casein-proctase, casein-acid protease and hemoglobin-acid protease, respectively. Pepstatin Ammonium also inhibits HIV protease.