4-Methylumbelliferone is a hyaluronic acid biosynthesis inhibitor with antitumoral and antimetastatic effects.

hyaluronic acid^[1]

4-Methylumbelliferone (4-MU) affects several key steps of angiogenesis, including endothelial cell proliferation, adhesion, tube formation, and extracellular matrix remodeling. Half-maximal inhibitory concentrations (IC₅₀) values in the proliferation assay are 0.65±0.04 and 0.37±0.03 mM for human microvascular endothelial cells (HMEC) and RF-24 endothelial cells, respectively. 4-Methylumbelliferone (2 mM) treatment for 24 h induces apoptosis in 13% of HMEC and 5% of RF-24 cells. The number of adherent endothelial cells decreases by >20% after 24 h of treatment with 1 mM 4-Methylumbelliferone. Minimal inhibitory concentrations in the tube formation assay are 2 and 0.5 mM 4-Methylumbelliferone for HMEC and RF-24, respectively. Matrix metalloproteinase-2 expression is differentially altered upon 4-Methylumbelliferone treatment in both tested endothelial cell lines^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

176.17

C₁₀H₈O₃

90-33-5

4-甲基伞形酮；羟甲香豆素；胆通

Room temperature in continental US; may vary elsewhere.

DMSO : 100 mg/mL (567.63 mM; Need ultrasonic)

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°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

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 (14.19 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (14.19 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。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.5 mg/mL (14.19 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (14.19 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 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (14.19 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (14.19 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。

• [1]. García-Vilas JA, et al. 4-methylumbelliferone inhibits angiogenesis in vitro and in vivo. J Agric Food Chem. 2013 May 1;61(17):4063-71.

The MTT dye reduction assay in 96-well microplates is used. The assay is dependent on the reduction of MTT by mitochondrial dehydrogenases of viable cells to a blue formazan product, which can be measured spectrophotometrically. Endothelial cells (2.5×10³ cells in a total volume of 100 μL of complete medium) are incubated in each well with serial dilutions of 4-Methylumbelliferone (4-MU) (0, 0.5, 1, 1.5 and 2 mM). After 3 days of incubation in the dark (37°C, 5% CO₂ in a humid atmosphere), 10 μL of MTT (5 mg/mL in PBS) is added to each well, and the plate is incubated for further a 4 h (37°C). The formazan is dissolved in 150 μL of 0.04 N HCl-2 propanol, and samples are spectrophotometrically measured at 550 nm. All determinations are carried out in quadruplicate, and at least three independent experiments are carried out. IC₅₀ values are calculated as those concentrations of compound yielding 50% cell survival, taking the values obtained for control as 100%^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. García-Vilas JA, et al. 4-methylumbelliferone inhibits angiogenesis in vitro and in vivo. J Agric Food Chem. 2013 May 1;61(17):4063-71.