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SC-514

CAS No. : 354812-17-2

MCE 站：SC-514

产品活性：SC-514 是一种选择性 IKK-2 抑制剂 (IC₅₀=11.2 μM)，不抑制其他 IKK 亚型或其他丝氨酸-苏氨酸和酪氨酸激酶。

研究领域：NF-κB

作用靶点：IKK

In Vitro: SC-514 inhibits the native IKK complex or recombinant human IKK-1/IKK-2 heterodimer with IC₅₀s of 6.1±2.2 μM and 2.7±0.7 μM, respectively. IKK-2 inhibition by SC-514 is selective, reversible, and competitive with ATP. SC-514 inhibits transcription of NF-κB-dependent genes in IL-1β-induced rheumatoid arthritis-derived synovial fibroblasts in a dose-dependent manner. SC-514 inhibits all forms of recombinant human IKK-2 including rhIKK-2 homodimer, rhIKK-1/rhIKK-2 heterodimer, as well as the constitutively active form of rhIKK-2 with comparable IC₅₀ values in the 3-12 μM range. To evaluate whether the reactive oxygen species (ROS)-inducing IKKβ inhibitor increases the sensitivity of melanoma cells to nitrosourea. The responses of melanoma cells are first assessed to SC-514/Fotemustine co-treatment. Melanoma cell lines are treated with 50 ?M of SC-514 and Fotemustine alone and in combination for 48 h and growth inhibition is assessed. Co-treatment with SC-514 significantly enhances Fotemustine-induced cytotoxicity in all melanoma cell lines tested.

In Vivo: SC-514 is efficacious in an acute model of inflammation, namely LPS-induced serum TNFα production in the rat. SC-514 shows a dose-dependent inhibition of TNFα production, validating IKK-2 as a potential anti-inflammatory drug target in vivo. To obtain in vivo evidence for the implication of SC-514 in the response of cancer cells to Fotemustine, the xenograft mouse model of melanoma is used. Nude mice engrafted with A375 or G361 tumors are treated with vehicle control and 25 mg/kg SC-514 and/or 25 mg/kg Fotemustine daily for 13-15 consecutive days and the tumor behavior is monitored. Fotemustine treatment with SC-514 shows a clear combined effect and reduces the size of tumors in mice.

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