Bavachin, a flavonoid first isolated from seeds of P. corylifolia, acts as a phytoestrogen that activates the estrogen receptors ERα and ERβ with EC₅₀s of 320 and 680 nM, respectively.

IC50: 320 nM (ERα), 680 nM (ERβ)

Bavachin significantly inhibits melanin synthesis and TYR activity. Bavachin (10 µM) inhibits the expression of TYR and JNK proteins, and the expression of TYR, TRP-1, TRP-2, ERK1, ERK2 and JNK2 mRNA in A375 cells. ICI182780 and U0126 cAN significantly reverse the bavachin treatment on the protein expression levels and the mRNA expression of TYR, TRP-1, TRP-2, ERK1, ERK2 and JNK2^[1]. Bavachin accumulates lipid in a dose dependent manner in ORO staining experiments. Bavachin significantly increases the growth of preadipoctye at 10 µM compared with the control cells in MTT assay. Bavachin also increases BrdU incorporation into newly synthesized DNA during pre-adipocyte proliferation. BrdU incorporation is enhanced by insulin and further enhanced by co-treatment with insulin and bavachin at 2 and 10 µM. Bavachin activates adipogenic factors and increases PPARγ transcriptional activity in differentiated adipocytes. Bavachin enhances insulin-stimulated glucose uptake through GLUT4 translocation via Akt and AMPK pathway^[2]. BVN significantly increases both hMAO-A and hMAO-B activities^[3]. Bavachin shows ER ligand binding activity in competitive displacement of [³H] E2 from recombinant ER. The estrogenic activity of bavachin is characterized in a transient transfection system using ERα or ERβ and estrogen-responsive luciferase plasmids in CV-1 cells with an EC₅₀ of 320 nM and 680 nM, respectively. Bavachin increases the mRNA levels of estrogen-responsive genes such as pS2 and PR, and decreases the protein level of ERα by proteasomal pathway^[4].

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.

324.37

C₂₀H₂₀O₄

19879-32-4

补骨脂甲素；补骨脂二氢黄酮

Room temperature in continental US; may vary elsewhere.

DMSO : 100 mg/mL (308.29 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: ≥ 2.08 mg/mL (6.41 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (6.41 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 20.8 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: ≥ 2.08 mg/mL (6.41 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (6.41 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 20.8 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: ≥ 2.08 mg/mL (6.41 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (6.41 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 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Wang JH, et al. Effects of bavachin and its regulation of melanin synthesis in A375 cells. Biomed Rep. 2016 Jul;5(1):87-92. Epub 2016 May 20.

  [2]. Lee H, et al. Bavachin from Psoralea corylifolia Improves Insulin-Dependent Glucose Uptake through Insulin Signaling and AMPK Activation in 3T3-L1 Adipocytes. Int J Mol Sci. 2016 Apr 8;17(4):527.

  [3]. Zarmouh NO, et al. Evaluation of the Inhibitory Effects of Bavachinin and Bavachin on Human Monoamine Oxidases A and B. Evid Based Complement Alternat Med. 2015;2015:852194.

  [4]. Park J, et al. Activation of Estrogen Receptor by Bavachin from Psoralea corylifolia. Biomol Ther (Seoul). 2012 Mar;20(2):183-8.

The chemiluminescent assay is used to confirm PCSEE MAO-A and MAO-B inhibitory effects and to test BNN and BVN hMAO-A and hMAO-B inhibition using MAO-Glo kit. Each enzyme’s Arbitrary Light Unit (ALU) is measured in the presence of PCSEE, BNN, BVN, and standard DEP as an MAO-BI positive control. Briefly, hMAO-A and hMAO-B isozymes are diluted to 2× with reaction buffer (pH 7.4) and preincubated with 4× PCSEE, BNN, BVN, or DEP working solutions at RT for 30 min in white opaque 96-well plates. For determining activity inhibition, final 8.5 μg/mL concentrations of PCSEE, BNN, BVN, and DEP are used. For IC₅₀ determination, 8× PCSEE and BNN working solutions are serially diluted using reaction buffers (pH 7.4) to make a 4× concentration. Ten points’ range of PCSEE (1.0 to 250.0 μg/mL) and BNN (up to 400 μM (135.4 μg/mL)) final concentrations is used. Controls used are with and without ethanol. Ethanol solvent in controls is kept to a maximum final (volume) of ≤2%. Each isozyme is substituted with the reaction buffer for the blank. Based on our preliminary optimizations and Valley’s method, the reaction is initiated by adding 4× luciferin derivative substrate (LDS) for a final (concentration) of 40 and 4 μM for hMAO-A and hMAO-B reactions, respectively. The final volume per well of each reaction is 50 μL. The reaction is optimized for the amount of A and B enzyme used to be incubated for less than 3.5 h at RT. To stop the reaction and produce the luminescence signal RLDR is added to all wells, 50 μL to each well, and incubated for a further 30 min.

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.

MTT solution (20 µL) is added to each well of the 96-well plates, the cells are cultured for 4 h, the solution is discarded, and the purple crystal is dissolved in the wells with 150 µL DMSO solution, agitated in a 37°C incubator shaker for 10 min, and the optical density (OD) is measured at 490 nm by the microplate reader.

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]. Wang JH, et al. Effects of bavachin and its regulation of melanin synthesis in A375 cells. Biomed Rep. 2016 Jul;5(1):87-92. Epub 2016 May 20.

  [2]. Lee H, et al. Bavachin from Psoralea corylifolia Improves Insulin-Dependent Glucose Uptake through Insulin Signaling and AMPK Activation in 3T3-L1 Adipocytes. Int J Mol Sci. 2016 Apr 8;17(4):527.

  [3]. Zarmouh NO, et al. Evaluation of the Inhibitory Effects of Bavachinin and Bavachin on Human Monoamine Oxidases A and B. Evid Based Complement Alternat Med. 2015;2015:852194.

  [4]. Park J, et al. Activation of Estrogen Receptor by Bavachin from Psoralea corylifolia. Biomol Ther (Seoul). 2012 Mar;20(2):183-8.