天然产物 糖类和糖苷 Saccharides and Glycosides
Columbin;(Synonyms: 古伦宾) 纯度: 98.86%
Columbin 是一种口服活性二萜呋喃内酯,具有抗炎和抗锥虫体作用。Columbin 选择性抑制 COX-2 (EC50=53.1 μM),选择性高于抑制 COX-1 (EC50=327 μM)。
Columbin Chemical Structure
CAS No. : 546-97-4
规格 | 价格 | 是否有货 | 数量 |
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10;mM;*;1 mL in DMSO | ¥550 | In-stock | |
5 mg | ¥500 | In-stock | |
10 mg | ¥800 | In-stock | |
25 mg | ¥1600 | In-stock | |
50 mg | ¥2800 | In-stock | |
100 mg | ; | 询价 | ; |
200 mg | ; | 询价 | ; |
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生物活性 |
Columbin is an orally active diterpenoid furanolactone from Calumbae radix, has anti-inflammatory and anti-trypanosomal effects. Columbin selectively inhibits COX-2 (EC50=53.1 μM) over COX-1 (EC50=327 μM)[1][2]. |
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IC50 Target[1] |
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体外研究 (In Vitro) |
Treatment with columbin or l-NAME inhibits LPS/IFN-γ-induced NO production without affecting the viability of RAW264.7. Pre-treatment of stimulated cells with columbin does not inhibit the translocation of NF-κB to the nucleus in LPS-stimulated cells. COX-1 and COX-2 inhibitory activities of columbin are 63.7±6.4% and 18.8±1.5% inhibition at 100μM, respectively. The interaction of columbin with Tyr385 and Arg120 signifies its higher activity in COX-2, as Tyr385 is reported to be involved in the abstraction of hydrogen from C-13 of arachidonate, and Arg120 is critical for high affinity arachidonate binding[1]. MCE has not independently confirmed the accuracy of these methods. They are for reference only. |
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体内研究 (In Vivo) |
Columbin inhibits oedema formation in mice paw. At doses of 300 mg/kg and 700 mg/kg, columbin inhibits inflammation from 0 to 5 h and the results are comparable to that of aspirin as a standard anti-inflammatory drug. The inhibitory effect of columbin on carrageenan induced paw oedema in mice may be due to the suppression of the release of mediators responsible for inflammation including prostaglandin[1]. Columbin is poorly bioavailable (2.8% p.o. and 14% i.p.) in rats, but its transport is rapid across the Caco-2 cell monolayers, suggesting that extensive first-pass metabolism in the liver is the likely reason for its poor bioavailability[2]. MCE has not independently confirmed the accuracy of these methods. They are for reference only. |
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分子量 |
358.39 |
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Formula |
C20H22O6 |
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CAS 号 |
546-97-4 |
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中文名称 |
古伦宾;咖伦宾;青牛胆苦素 |
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运输条件 |
Room temperature in continental US; may vary elsewhere. |
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储存方式 |
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溶解性数据 |
In Vitro:;
DMSO : ≥ 100 mg/mL (279.03 mM) * “≥” means soluble, but saturation unknown. 配制储备液
*
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。 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
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参考文献 |
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Animal Administration [1][2] |
Rats: Male Wistar rats are treated as following: i.v. injection of columbin in EtOH and PEG-300 (1:1) is administrated through tail vein at dose of 20 mg/kg. Intraperitoneal (i.p.) injection of columbin in EtOH and PEG-300 (1:1) is administrated at dose of 20 mg/kg. An oral gavage of columbin suspended in oral suspension vehicle is given to rats at dose of 50 mg/kg. Blood samples (50-100 μL) are collected by snipping the tail into heparinized tubes at 0, 5, 15, 30, 45, 60, 120, 240, 360, 480 and 1440 min for i.v. administration, or at 0, 15, 30, 60,120, 180, 240, 360, 480, 1440 min for oral dosing or i.p. injection. The blood samples are stored at −20°C until analysis[2]. Mice: Male Balb/c mice (n=60) are randomly divided into six groups. Columbin is intra-peritoneally administered to mice at the dose of 30, 100, 300 and 700 mg/kg. Aspirin, an anti-inflammatory drug, is used as a positive control. To induce acute phase inflammation in paw, rats are injected subcutaneously into the right hind paw with a 1% solution of carrageenan dissolved in saline 30 min after vehicle or columbin treatment. The paw volumes are measured up to 5 h after the injection at intervals of 1 h. Paw volume is measured with a plethysmometer immediately prior to the injection of carrageenan and thereafter at an interval of 1 h for a period of 5 h[1]. MCE has not independently confirmed the accuracy of these methods. They are for reference only. |
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参考文献 |
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