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描述 | The activating protein 1 (AP-1) and nuclear factor-κB (NF-κB) families of transcription factors are implicated in many pathological processes. C-Jun N-terminal kinases (JNKs) have been shown to regulate the transcriptional activity of AP-1. IQ-1S free acid is a potent inhibitor of pro-inflammatory cytokines without cytotoxic effect. It inhibits NF-κB/AP-1 activity with an IC50 value of 2.3±0.41μM. Treatment of human peripheral blood mononuclear cells with IQ-1S free acid (20μM) significantly inhibited LPS (200ng/ml)-induced production of pro-inflammatory cytokines, including IL-1α, IL-1β, IL-6, IL-10, and TNF-α, compared to DMSO-treated controls. The IC50 values of IQ-1S free acid for TNF-α and IL-6 in human MonoMac-6 cells are 1.3±0.31 and 3.8±0.78μM, respectively. The IC50 values of IQ-1S free acid for TNF-α and IL-6 in human peripheral blood mononuclear cells are 2.6±0.63 and 5.6±1.1μM, respectively. The IC50 values of IQ-1S free acid for NO in murine J774.A1 cells is 3.1±0.87μM. The binding affinity of IQ-1S free acid for JNK1, JNK2, and JNK3 are 0.24, 0.36, and 0.10μM, respectively. IQ-1S free acid also exhibits binding affinity towards CK1δ, PI3Kγ, and MKNK2 with Kd values of 0.38, 0.47, and 0.92μM, respectively. When mice were i.p. administered with IQ-1S free acid at a dose of 12.5 and 30mg/kg, the serum AUC0-12h values were 2.9 and 7.4μM/h, respectively. The i.p. injection of OVA-challenged mice with 12.5mg/kg IQ-1S free acid (every 12 h, a total of 5 injections) significantly suppressed OVA-induced CD4+ T-cell immune response compared to the vehicle-treated group[3]. |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
4.04mL 0.81mL 0.40mL |
20.22mL 4.04mL 2.02mL |
40.44mL 8.09mL 4.04mL |
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