Docetaxel Trihydrate

产品活性：Docetaxel Trihydrate (RP-56976 Trihydrate) 是一种抗肿瘤试剂,抑制微管解聚 (microtubule depolymerization) 的 IC₅₀ 值为 0.2 μM。Docetaxel Trihydrate 是紫杉醇的半合成类似物，能减弱 bcl-2 和 bcl-xL 基因表达的影响。Docetaxel Trihydrate 阻滞G2/M细胞周期，导致细胞凋亡 (apoptosis)。

研究领域：Cell Cycle/DNA Damage | Cytoskeleton | Apoptosis

作用靶点：Microtubule/Tubulin | Apoptosis

In Vitro: Docetaxel Trihydrate (RP-56976 Trihydrate) and Glufosfamide (GLU) single and combined treatments affect the cells viability in a dose-dependent manner. The IC₅₀ of GLU are 70±4 μM and 86.8±8 μM in PC-3 and LNCaP cells; respectively. While, the IC₅₀ of Docetaxel alone is found to be 3.08±0.4 nM and 1.46±0.2 nM in PC-3 and LNCaP cells; respectively. The co-treatment of GLU with Docetaxel is found to synergize the cytotoxicity and the IC₅₀ values are decreased to be 2.7±0.1 nM and 0.75±0.3 nM in PC-3 and LNCaP cells; respectively. IC₅₀ of NCI-H460 to Docetaxel at 24 h is 116 nM and at 72 h is 30 nM. According to data reported in DTP Data Search, the mean IC₅₀ of NCI-60 cell panel to Docetaxel is 14-34 nM.

In Vivo: In female mice, the Docetaxel Trihydrate (RP-56976 Trihydrate)-induced intestinal apoptosis in the 14-hours after light on (HALO) group is significantly greater than that in the 2-HALO group. Bax expression is significantly elevated by Docetaxel in the 2-HALO group, but not in the 14-HALO group. On the other hand, cleaved Caspase-3 expression is significantly elevated by Docetaxel in the 14-HALO group, but not in the 2-HALO group. The expressions of Wee1 and phosphorylated CKD1 are significantly elevated after dosing of Docetaxel at 14 HALO, but not at 2 HALO. In addition, Docetaxel significantly reduces survivin expression in the 14-HALO group but not in the 2-HALO group. The survivin expression level in the Docetaxel-treated 14-HALO group is significantly smaller than that in the drug-treated 2-HALO group. Piperine (PIP) is administrated via intravenous bolus at 3.5 mg/kg and via oral administration at 35 mg/kg and 3.5 mg/kg, while Docetaxel (DOX) is intravenously administrated at 7 mg/kg to Sprague-Daley rats. The co-administrations of PIP at 35 mg/kg via oral administration and Docetaxel at 7 mg/kg via intravenous bolus administration in Sprague-Dawley rats. The combination use of PIP and Docetaxel results in a synergic increase of both their in vivo exposure.

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