1. Anti-infection
  2. SARS-CoV Virus Protease
  3. YL1004

YL1004 是一种强效、选择性且口服有效的非共价抑制剂,可抑制 SARS-CoV-2 木瓜蛋白酶样蛋白酶 (PLpro)。YL1004 对 PLpro 的 IC50 为 17.5 nM,Ki 为 2.3 nM,体外抗 SARS-CoV-2 的 EC50 为 0.08 μM-1.37 μM。YL1004 可抑制 PLpro 的蛋白水解活性,并阻断其去泛素化和去 ISG 化作用,以恢复宿主固有抗病毒免疫信号通路。YL1004 可抑制 SARS-CoV-2 野生株、Delta 株、Omicron 变异株以及耐奈玛特韦毒株的复制。YL1004 可用于新型冠状病毒肺炎 (SARS-CoV-2 感染) 的研究。

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YL1004

YL1004 Chemical Structure

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  • 生物活性

  • 纯度 & 产品资料

  • 参考文献

生物活性

YL1004 is a potent, selective and orally active noncovalent inhibitor of SARS-CoV-2 papain-like protease (PLpro). YL1004 shows an IC50 of 17.5 nM and a Ki of 2.3 nM against PLpro, with an in vitro anti-SARS-CoV-2 EC50 of 0.08 μM-1.37 μM. YL1004 suppresses the proteolytic activity of PLpro and blocks its deubiquitinating and deISGylating effects to restore host innate antiviral immune signaling. YL1004 inhibits the replication of wild-type, Delta, Omicron variants and nirmatrelvir-resistant strains of SARS-CoV-2. YL1004 can be used for the research of COVID-19 (SARS-CoV-2 infection)[1].

体外研究
(In Vitro)

YL1004 (室温下预孵育 10 分钟) 可抑制 SARS-CoV-2 PLpro 介导的多蛋白切割,其 IC50 为 17.5 nM,Ki 为 2.3 nM;可抑制 SARS-CoV-2 PLpro 介导的去泛素化作用,IC50 为 22.9 nM,Ki 为 4.2 nM;还可抑制 SARS-CoV-2 PLpro 介导的去 ISG 化作用,IC50 为 43.6 nM,Ki 为 39.3 nM[1]
YL1004 (孵育 72 h) 在哺乳动物细胞系中表现出低细胞毒性,在 VeroE6 细胞中的 CC50 为 226.90 μM,在 Calu3 细胞中的 CC50 为 296.33 μM[1]
YL1004 可直接与 SARS-CoV-2 PLpro 结合,这一点通过 DSF 实验中 18.07°C 的 ΔTm 得到证实[1]
YL1004 (0.001-10 μM; 36 h) 可在 HEK293T 细胞中剂量依赖性地抑制 SARS-CoV-2 PLpro 介导的去泛素化作用[1]
YL1004 (0.1-10 μM; co-treated with PLpro following 48 h IFN-α stimulation) 可在 IFN-α 刺激的 A549 细胞中呈剂量依赖性抑制 SARS-CoV-2 PLpro 介导的去 ISG 化修饰[1]
YL1004 (0.002-10 μM; co-treated with TNF-α (HY-P7058) stimulation) 可恢复表达 PLpro 的 HEK293T 细胞中由 TNF-α 诱导的 NF-κB 激活,其 EC50 为 44.1 nM;同时可恢复 ISRE 激活,EC50 为 265.3 nM[1]
YL1004 (0.002-10 μM; co-treated with poly (I:C) (HY-107202) stimulation) 可恢复表达 PLpro 的 HEK293T 细胞中由 poly (I:C) 诱导的 IFNB1 与 IRF3 激活,其 EC50 值分别为 26.5 nM 和 206.9 nM[1]
YL1004 (在 poly (I:C) 刺激同时给药后 18-24 h) 可恢复经 poly (I:C) 刺激的 HEK293T 细胞中被 PLpro 抑制的、参与固有免疫、自噬及线粒体应激反应的基因的转录水平[1]
YL1004 (0.039-10 μM; 22 h for wildtype/Delta/JN.1, 46 h for KP.3/NSP5-E166V) 可剂量依赖性降低受感染 Calu3 细胞中的 SARS-CoV-2 sgE RNA 水平[1]
YL1004 (感染后野生型/Delta 株作用 48 h,JN.1/KP.3/NSP5-E166V 株作用 72 h) 可强效抑制具有感染性的 SARS-CoV-2 复制,在野生型、Delta、奥密克戎 JN.1、奥密克戎 KP.3 以及耐奈玛特韦的 NSP5-E166V 重组毒株中,其 EC50 值范围为 0.08 μM 至 1.37 μM[1]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Western Blot Analysis[1]

Cell Line: HEK293T cells
Concentration: 0.01, 0.05, 0.1, 0.25, 0.5, 1, 10 μM
Incubation Time: 36 h
Result: Restored ubiquitinated protein levels in a dose-dependent manner.
Showed greater potency than 10 μM of a reference compound at suppressing PLPRO-mediated deubiquitination when used at 1 μM.

Western Blot Analysis[1]

Cell Line: HEK293T cells
Concentration: 0.1, 1, 10 μM
Incubation Time: with or without IFN-α for 48 h
Result: Reversed PLPRO-mediated reduction of ISG15-conjugated proteins in a dose-dependent manner.

Real Time qPCR[1]

Cell Line: Calu3 cells infected with SARS-CoV-2 wildtype, Delta, Omicron JN.1, Omicron KP.3, and NSP5-E166V recombinant strains
Concentration: 0.039, 0.16, 0.63, 2.5, 110 μM
Incubation Time: 24 h (WT, Delta, JN.1); 48 h (KP.3, NSP5-E166V mutant)
Result: Dose-dependently reduced SARS-CoV-2 sgE RNA levels; inhibited replication of WT, Delta, Omicron JN.1/KP.3 and nirmatrelvir-resistant strain.
药代动力学
(Parmacokinetics)
Species Dose Route AUC0-t Bioavailability
Mice[1] 100 mg/kg p.o. 79818.17 μg/L·h 61.2 %
Rat[1] 10 mg/kg p.o. 14723.3 μg/L·h /
体内研究
(In Vivo)

YL1004 (100 mg/kg; p.o.; twice per day) 可显著降低感染 Omicron JN.1 的 K18-hACE2 小鼠的病毒载量、病毒抗原水平及病理损伤,与溶媒对照组相比,其肺组织病毒 RNA 水平降低 26.1 倍,肺组织感染滴度降低 13.4 倍[1]
YL1004 (100 mg/kg; p.o.; twice per day) 于攻毒后 1 小时开始给药,可使 SARS-CoV-2 Delta 株攻毒的 K18-hACE2 小鼠获得 100%的存活率并减轻体重下降[1]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: K18-hACE2 transgenic (8-12-week-old; male and female; intranasal inoculation with SARS-CoV-2 Omicron JN.1)[1]
Dosage: 100 mg/kg
Administration: p.o.; twice per day
Result: Decreased viral sgE RNA loads in nasal turbinates by 3.6-fold compared to vehicle controls.
Decreased viral sgE RNA loads in lung tissues by 26.1-fold compared to vehicle controls.
Lowered infectious viral titers in nasal turbinates by 21-fold compared to vehicle controls.
Lowered infectious viral titers in lung tissues by 13.4-fold compared to vehicle controls.
Rarely detected viral antigen in treated mouse lungs.
Significantly alleviated virus-induced pathological changes, with only mild alveolar deformation observed.
Animal Model: K18-hACE2 transgenic (8-12-week-old; female; intranasal inoculation with SARS-CoV-2 Delta)[1]
Dosage: 100 mg/kg
Administration: p.o.; twice per day
Result: Reduced body weight loss significantly compared to vehicle controls.
Achieved 100% survival (10/10 mice) at 14 days post-infection, compared to 10% survival (1/10 mice) in vehicle controls.
分子量

527.66

Formula

C31H37N5O3

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

纯度 & 产品资料
参考文献
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  • 稀释计算器

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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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产品名称:
YL1004
目录号:
HY-181661
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