Maslinic acid can inhibit the DNA-binding activity of NF-κB p65 and abolish the phosphorylation of IκB-α, which is required for p65 activation.

Maslinic acid (MA) inhibits LPS-induced NF-κB translocation to nucleus and phosphorylation of IκB-α. Maslinic acid has also been reported to suppress NF-κB regulated osteoclastogenesis in bone marrow monocytes and inhibit TNF-α-induced NF-κB activity and its downstream genes’ expression in pancreatic cancer cells. To confirm if the anti-inflammatory effects of olive pomace extracts (OPEs) inRAW264.7 cells can be attributed to Maslinic acid, dose-dependence experiments determined the effective concentration of Maslinic acid to be 10-20 μM. 20 μM Maslinic acid significantly suppresses TNF-α production and inhibits IL-1, IL-6, and COX-2 mRNA expression in RAW 264.7 cell. Maslinic acid (at 10 and 20 μM) significantly suppresses the DNA-binding activity of NF-κB p65 in LPS-induced RAW 264.7 cells. Pretreatment with Maslinic acid significantly reduces the LPS-induced phosphorylation of IκB-α^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Paw swelling is alleviated when mice are administered with 200 mg/kg Maslinic acid (MA), significantly suppressing inflammation, compared to the carrageenan induced control group, 4 h after λ-carrageenan injection (0.91±0.51 mm and 1.79±0.4 mm, respectively)^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

472.70

C₃₀H₄₈O₄

4373-41-5

山楂酸；马斯里酸；2α-羟基齐墩果酸

Room temperature in continental US; may vary elsewhere.

DMSO : 100 mg/mL (211.55 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    90% (20% SBE-β-CD in saline)

  Solubility: 2.5 mg/mL (5.29 mM); Suspended solution; Need ultrasonic

  此方案可获得 2.5 mg/mL (5.29 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  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
• 2.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (5.29 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.29 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]. Fukumitsu S, et al. Anti-inflammatory and anti-arthritic effects of pentacyclic triterpenoids maslinic acid through NF-κB inactivation. Mol Nutr Food Res. 2016 Feb;60(2):399-409.

RAW 264.7 cells are seeded in 96-well culture plates at a density of 1×10⁵ cells/mL and after incubation for 24 h, are treated with OPE1 (300 μg/mL or 400 μg/mL), OPE2 (20 μg/mL or 40 μg/mL), or Maslinic acid (10 μM or 20 μM) , as well as with/without LPS at the same time. Cell viability i determined using the WST-1 reagent. Briefly, WST-1 reagent (10 μL) is added to each well and incubated for 1h in a humidified incubator. The absorbance of the samples measured at 450 nm (reference wavelength is 750 nm). Viability is expressed as a percentage of the absorbance measured in LPS-treated cells^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Mice^[1]
Five-week-old male Balb/c mice (19-21 g) are housed in a conventional condition and provided with the free access to standard rodent chow and water. Edema is induced by intraplantar injection of 100 μL 1% carrageenan into the hind left paw. Maslinic acid is tested initially at a dose of 200 mg/kg, orally administered 60 min before and after carrageenan injection. Paw thickness is measured using electronic digital calipers, 2, 3, and 4 h following carrageenan treatment. Mice are sacrificed by carbon dioxide inhalation 4 h after carrageenan injection^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Fukumitsu S, et al. Anti-inflammatory and anti-arthritic effects of pentacyclic triterpenoids maslinic acid through NF-κB inactivation. Mol Nutr Food Res. 2016 Feb;60(2):399-409.