Epoxomicin (BU-4061T) 是一种含环氧酮的天然产物,是一种有效的,选择性的和不可逆的蛋白酶体 (proteasome) 抑制剂。Epoxomicin 与蛋白酶体的 LMP7,X,MECL1 和 Z 催化亚基共价结合,并有效地主要抑制类胰凝乳蛋白酶的活性。Epoxomicin 可以穿越血脑屏障,并具有很强的抗肿瘤和抗炎活性。
生物活性 | Epoxomicin (BU-4061T) is an epoxyketone-containing natural product and a potent, selective and irreversibleproteasomeinhibitor. Epoxomicin covalently binds to the LMP7, X, MECL1, and Z catalytic subunits of theproteasomeand potently inhibits primarily thechymotrypsin-likeactivity. Epoxomicin can cross the blood-brain barrier. Epoxomicin has strongly antitumor and anti-inflammatory activity[1][2][3][4][5]. |
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体外研究 (In Vitro) | Epoxomicin shows quite potent cytotoxicities against all of the cells tested. Epoxomicin inhibits the cells growth of B16-F10, HCT116, Moser, P388 and K562 cells of IC50values of 0.002 μg/mL, 0.005 μg/mL, 0.044 μg/mL, 0.002 μg/mL and 0.037 μg/mL[1]. Epoxomicin has antiproliferative activity with an IC50of 4 nM in EL4 lymphoma cells[2].
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体内研究 (In Vivo) | Epoxomicin (0.063-1 mg/kg; intraperitoneal injection; once daily; for 9 days; male BDFX mice) treatment shows significant antitumor effect with the minimumeffective dose of 0.13mg/kg/day[1]. Epoxomicin also effectively inhibits NF-κB activation in vitro and potently blocks in vivo inflammation in the murine ear edema assay[3]. Epoxomicin is injected into adult rats over a period of 2 weeks. After a latency of 1 to 2 weeks, animals developed progressive Parkinsonism with bradykinesia, rigidity, tremor, and an abnormal posture. Postmortem analyses shows striatal dopamine depletion and dopaminergic cell death with apoptosis in the substantia nigra pars compacta[4].
Animal Model: | Male BDFX mice with B16 melanoma[1] | Dosage: | 0.063 mg/kg, 0.13 mg/kg, 0.25 mg/kg, 0.5 mg/kg, 1 mg/kg | Administration: | Intraperitoneal injection; once daily; for 9 days | Result: | Exhibited strong therapeutic activity against B16 melanoma. |
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结构分类 | - Ketones, Aldehydes, Acids
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来源 | actinomycete strain NumberQ996-17 |
运输条件 | Room temperature in continental US; may vary elsewhere. |
储存方式 | Powder | -20°C | 3 years | | 4°C | 2 years | In solvent | -80°C | 6 months | | -20°C | 1 month |
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溶解性数据 | In Vitro: DMSO : 100 mg/mL(180.27 mM;Need ultrasonic) 配制储备液 1 mM | 1.8027 mL | 9.0136 mL | 18.0271 mL | 5 mM | 0.3605 mL | 1.8027 mL | 3.6054 mL | 10 mM | 0.1803 mL | 0.9014 mL | 1.8027 mL |
*请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80℃, 6 months; -20℃, 1 month。-80℃ 储存时,请在 6 个月内使用,-20℃ 储存时,请在 1 个月内使用。 In Vivo: 请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照In Vitro方式配制澄清的储备液,再依次添加助溶剂: ——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用;
以下溶剂前显示的百 分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶 1. 请依序添加每种溶剂: 10% DMSO 40%PEG300 5%Tween-80 45% saline Solubility: ≥ 2.5 mg/mL (4.51 mM); Clear solution
此方案可获得 ≥ 2.5 mg/mL (4.51 mM,饱和度未知) 的澄清溶液。 以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。 2. 请依序添加每种溶剂: 10% DMSO 90% (20%SBE-β-CDin saline) Solubility: ≥ 2.5 mg/mL (4.51 mM); Clear solution
此方案可获得 ≥ 2.5 mg/mL (4.51 mM,饱和度未知) 的澄清溶液。 以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。 3. 请依序添加每种溶剂: 10% DMSO 90%corn oil Solubility: ≥ 2.5 mg/mL (4.51 mM); Clear solution
此方案可获得 ≥ 2.5 mg/mL (4.51 mM,饱和度未知) 的澄清溶液,此方案不适用于实验周期在半个月以上的实验。 以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中,混合均匀。 *以上所有助溶剂都可在本网站选购。
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