Telaprevir (VX-950)

Telaprevir(VX-950)は、C型肝炎ウイルス(HCV)NS3-4Aセリン・プロテアーゼ阻害剤で、IC50 が0.35 μMになる。

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Telaprevir (VX-950) 化学構造
分子量: 679.85



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情報 Telaprevir(VX-950)は、C型肝炎ウイルス(HCV)NS3-4Aセリン・プロテアーゼ阻害剤で、IC50 が0.35 μMになる。
目標 HCV NS3-4A serine protease
IC50 0.35 μM [1]
In vitro試験 Telaprevir inhibits the hepatitis C virus NS3-4A serine protease, leading to the block of viral polyprotein processing and subsequently decrease of viral RNA replication, total HCV RNA levels and protein levels in the Con1 (genotype 1b) subgenomic HCV replicon cells in a time- and dose-dependent manner. Telaprevir displays a significant time-dependent increase in inhibitory effect on the replication of HCV RNA with IC50 values of 0.574 μM, 0.488 μM, 0.210 μM and 0.139 μM for 24, 48, 72 and 120 hours incubation, respectively. Telaprevir displays an average IC50 of 0.354 μM and an average IC90 of 0.830 μM, respectively, from three independent experiments using the 48 hours incubation. Telaprevir has no significant cytotoxicity to HCV replicon cells, parental Huh-7 and HepG2 cells after 48 hours incubation. Telaprevir (17.5 μM) completely eradicates HCV RNA from replicon cells after 13 days incubation without rebound after Telaprevir is withdrawn. Telaprevir displays an additive to moderate synergistic effect on reduction of HCV RNA replication and suppression of resistance mutations without significant increase in cytotoxicity when in combination with IFN-α, compared to treatment with each agent alone. [1]
In vivo試験 Oral administration of Telaprevir reduces HCV protease-dependent cleavage and subsequent secretion of SEAP from the liver into the blood in the mice model to 18.7% and 18.4% at dosage of 10 and 25 mg/kg, respectively. [2] Administration of Telaprevir at 200 mg/kg for 1 week results in a 1.9 log reduction of HCV RNA in genotype 1b HCV-infected human hepatocyte chimeric mice, and when treatment in combination with MK-0608 (50 mg/kg) for 4 weeks, viruses are eliminated from mice. [3]
臨床試験 Currently in Phase III clinical trials in patients with Hepatitis C.
特集 Telaprevir is a covalent, reversible inhibitor of the NS3-4A protease (unlike BILN 2061which is a noncovalent inhibitor), with a slow-binding and slow-dissociation mechanism.

推薦された実験操作 (公開の文献だけ)

キナーゼアッセイ: [1]

Determination of anti-HCV activity Stable Huh-7 cells containing the self-replicating, subgenomic HCV replicon, which is identical in sequence to the I377neo/NS3-3'/wt replicon are used for anti-HCV assays. Replicon cells are incubated at 37 °C for the indicated period of time with Telaprevir serially diluted in DMEM plus 2% FBS and 0.5% dimethyl sulfoxide (DMSO). Total cellular RNA is extracted using an RNeasy-96 kit, and the copy number of HCV RNA is determined using a quantitative RTPCR (QRT-PCR) assay for the assessment of 50% inhibitory concentration (IC50

細胞アッセイ: [1]

細胞系 Huh-7, HepG2, and peripheral blood mononuclear cells (PBMC)
濃度 Dissolved in DMSO, final concentration ~1 mM
処理時間 48 hours
方法 Cells are incubated with various concentrations of Telaprevir for 48 hours. Cell viability is determined by using a tetrazolium (MTS)-based cell viability assay.

動物実験: [2]

動物モデル SCID mice injected with recombinant adenovirus (Ad-WT-HCVpro-SEAP or Ad-MT-HCVpro-SEAP)
製剤 Formulated in polyvinylpyrrolidone (PVP) K-30 plus 2% sodium lauryl sulfate
投薬量 ~300 mg/kg
管理 Oral gavage



Download Telaprevir (VX-950) SDF
分子量 679.85


CAS No. 402957-28-2
別名 N/A
溶解度 (25°C)
  • DMSO 136 mg/mL
  • 水 <1 mg/mL
  • エタノール <1 mg/mL
保管 2年 -20°C
6月-80°Cin DMSO
化学名 (1S,3aR,6aS)-2-((S)-2-((S)-2-cyclohexyl-2-(pyrazine-2-carboxamido)acetamido)-3,3-dimethylbutanoyl)-N-((S)-1-(cyclopropylamino)-1,2-dioxohexan-3-yl)-octahydrocyclopenta[c]pyrrole-1-carboxamide


カスタマーレビュー (1)

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Source Dr Julie Sheldon,Dr Esteban Domingo and Dr Celia Perales. Telaprevir (VX-950) purchased from Selleck
Method MTT assays
Cell Lines
Concentrations 50 μM
Incubation Time 72 h
Results The 50% cytotoxic concentration (CC50) of VX-950 was 22 ± 3.2 μM.

製品表彰状 (6)

  • The cyclophilin inhibitor SCY-635 disrupts hepatitis C virus NS5A-cyclophilin A complexes. [Hopkins S, et al. Antimicrob Agents Chemother 2012;56(7):3888-97]

    PubMed: 22585215
  • Development of a multiplex phenotypic cell-based high throughput screening assay to identify novel hepatitis C virus antivirals. [Kim HY, et al. Antiviral Res 2013;99(1):6-11]

    PubMed: 23660623
  • Hepatitis C Virus NS3/4A Protease Inhibits Complement Activation by Cleaving Complement Component 4 [Seiichi Mawatari,et al. PLoS One 2013;8(12):e82094]

    PubMed: 24349192
  • DDB1 is a cellular substrate of NS3/4A protease and required for hepatitis C virus replication. [Kang X, et al. Virology 2012;435(2):385-94]

    PubMed: 23137809
  • Biochemical interaction of anti-HCV telaprevir with the ABC transporters P-glycoprotein and breast cancer resistance protein. [Fujita Y, et al. BMC Res Notes 2013;6(1):445]

    PubMed: 24196382
  • Inhibitory effects of caffeic Acid phenethyl ester derivatives on replication of hepatitis C virus. [Shen H ,et al. PLoS One 2013;8(12):e82299]

    PubMed: 24358168



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