R-1479
(Synonyms: 4'-叠氮基胞嘧啶核苷,4'-Azidocytidine) 目录号 : GC37063R-1479 是一种特异性的HCV复制 (HCV replication) 抑制剂,在HCV亚基因组复制体系中,IC50 为 1.28 μM。
Cas No.:478182-28-4
Sample solution is provided at 25 µL, 10mM.
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- Purity: >99.50%
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Kinase experiment: | The membrane-associated, native HCV replicase complex is isolated from 2209-23 HCV replicon cells and a derived cell line carrying HCV replicon RNA with a S282T mutation in the NS5B coding sequence. The in vitro replicase assay contain 10 μL of cytoplasmic membrane fraction, 50 mM HEPES (pH 7.5), 10 mM KCl, 10 mM dithiothreitol, 5 mM MgCl2, 20 μg/mL actinomycin D, 1 mM ATP, 1 mM GTP, 1 mM UTP, 30 μCi of [α-33P]CTP (3000 Ci/mmol, 10 mCi/mL), 1 unit/μL SUPERase•In, 10 mM creatine phosphate, and 200 μg/mL creatine phosphokinase in a final volume of 25 μL. Inhibition by nucleotide analogs is determined[1]. |
Cell experiment: | The effect of R-1479 on the incorporation of tritiated thymidine into cellular DNA is measured using the [3H]thymidine incorporation scintillation proximity assay system. MTT and WST-1 assay systems are used to measure cell viability. The ATP bioluminescence assay kit HSII is used to measure intracellular ATP levels[1]. |
References: [1]. Klumpp K, et al. The novel nucleoside analog R1479 (4'-azidocytidine) is a potent inhibitor of NS5B-dependent RNA synthesis and hepatitis C virus replication in cell culture. J Biol Chem. 2006 Feb 17;281(7):3793-9. |
R-1479 is a specific inhibitor of HCV replication in the HCV subgenomic replicon system (IC50=1.28 μM). IC50: 1.28 μM (HCV replication)[1]
R-1479 (R1479) inhibits HCV RNA replication with a mean IC50 value of 1.28 μM when measured as dose-dependent reduction of Renillaluciferase activity after a 72 h incubation of proliferating replicon cells. R-1479 shows no effect on cell viability or proliferation of HCV replicon or Huh-7 cells at concentrations up to 2 mM[1]. The most potent and non-cytotoxic derivative is R-1479 with an IC50 of 1.28 μM in the HCV replicon system. The triphosphate of R-1479 is prepared and shown to be an inhibitor of RNA synthesis mediated by NS5B (IC50=320 nM), the RNA polymerase encoded by HCV. R-1479 displays good activity in the replicon assay with no measurable cytotoxic or cytostatic effect[2].
[1]. Klumpp K, et al. The novel nucleoside analog R1479 (4'-azidocytidine) is a potent inhibitor of NS5B-dependent RNA synthesis and hepatitis C virus replication in cell culture. J Biol Chem. 2006 Feb 17;281(7):3793-9. [2]. Smith DB, et al. Design, synthesis, and antiviral properties of 4'-substituted ribonucleosides as inhibitors of hepatitis C virus replication: the discovery of R1479. Bioorg Med Chem Lett. 2007 May 1;17(9):2570-6.
Cas No. | 478182-28-4 | SDF | |
别名 | 4'-叠氮基胞嘧啶核苷,4'-Azidocytidine | ||
Canonical SMILES | OC[C@@]1([C@@H](O)[C@@H](O)[C@@H](O1)N2C(N=C(N)C=C2)=O)N=[N+]=[N-] | ||
分子式 | C9H12N6O5 | 分子量 | 284.23 |
溶解度 | DMSO: ≥ 50 mg/mL (175.91 mM) | 储存条件 | Store at -20°C |
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1 mg | 5 mg | 10 mg | |
1 mM | 3.5183 mL | 17.5914 mL | 35.1828 mL |
5 mM | 0.7037 mL | 3.5183 mL | 7.0366 mL |
10 mM | 0.3518 mL | 1.7591 mL | 3.5183 mL |
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R-1626, a specific oral NS5B polymerase inhibitor of hepatitis C virus
IDrugs 2008 Oct;11(10):738-49.PMID:18828074doi
Roche Holding AG is developing R-1626, an oral nucleoside inhibitor of HCV RNA polymerase. R-1626 has been demonstrated to be well absorbed and rapidly converted to the active component R-1479. The compound has demonstrated a strong capacity to inhibit HCV replication in vitro and in vivo, without the rapid development of viral resistance. After 4 weeks of treatment with R-1626 in combination with PEG-IFN plus ribavirin in treatment-naïve patients with genotype 1 HCV infection, HCV RNA could no longer be detected in approximately 74% of patients, compared with 5% of patients treated with PEG-IFN plus ribavirin alone, indicating the high potency of R-1626 to induce HCV RNA viral load reductions. R-1626 was generally well tolerated, although severe side effects of neutropenia were observed at high doses. A phase IIb clinical trial was ongoing at the time of publication to test the efficacy of R-1626 in combination with a standard or lower dose of PEG-IFN and ribavirin in HCV genotype 1-infected patients. Given its potent antiviral effect with an apparent high genetic barrier, R-1626 represents an important advancement in improving the outcome of patients with chronic HCV infection.
Antiviral candidates against the hepatitis E virus (HEV) and their combinations inhibit HEV growth in in vitro
Antiviral Res 2019 Oct;170:104570.PMID:31362004DOI:10.1016/j.antiviral.2019.104570.
Hepatitis E is a global public health problem. Ribavirin (RBV) and pegylated interferon alpha are currently administered to cure hepatitis E. Recently, in combination with RBV, sofosbuvir (SOF), an anti-hepatitis C virus nucleotide analog, is also given to patients with chronic hepatitis E. However, this combinatorial therapy sometimes fails to achieve a sustained virological response. In this study, we used 27 antiviral compounds, including 15 nucleos(t)ide analogs, for in vitro screening against a genotype 3 HEV strain containing a Gaussia luciferase reporter. RBV, SOF, 2'-C-methyladenosine, 2'-C-methylcytidine (2CMC), 2'-C-methylguanosine (2CMG), and two 4'-azido nucleoside analogs (R-1479 and RO-9187) suppressed replication of the reporter genome, while only RBV, SOF, 2CMC and 2CMG inhibited the growth of genotype 3 HEV in cultured cells. Although 2CMG and RBV (2CMG/RBV) exhibited a synergistic effect while SOF/RBV and 2CMC/RBV showed antagonistic effects on the reporter assay, these three nucleos(t)ide analogs acted additively with RBV in inhibiting HEV growth in cultured cells. Furthermore, SOF and 2CMG, with four interferons (IFN-α2b, IFN-λ1, IFN-λ2 and IFN-λ3), inhibited HEV growth efficiently and cleared HEV in cultured cells. These results suggest that, in combination with RBV or interferons, SOF and 2CMG would be promising bases for developing anti-HEV nucleos(t)ide analogs.