| Description | Procyanidin B1, isolated from commonly eaten fruits, binds to the TLR4/MD-2 complex and has anti-inflammatory activity. |
| In vitro | Procyanidin B1 (100 μg/mL) 抑制LPS诱导的TNF-α产生、MD-2、TRAF6、NF-κB mRNA的表达以及THP1细胞中磷酸化的p38 MAPK和NF-κB蛋白[1]。Procyanidin B1 (50-100 μM) 能够保护神经元免受Aβ寡聚体诱导的死亡。Procyanidin B1 在100 μM时强效抑制caspase-3的激活，在30、50、和100 μM时抑制caspase-8，在10、30、50、和100 μM时抑制caspase-9[2]。Procyanidin B1 (10、20、30 μM) 显著且剂量依赖性地诱导ACO和CPT1的表达，对PPARα mRNA的表达无明显影响[3]。 |
| Cell experiments | To investigate the cytotoxic effect of Procyanidin B1, the viability of THP1 cells is assessed using the CCK8 assay. THP1 cells are treated with Procyanidin B1 for 18 h, and 10 μL of CCK8 solution is then added to each well and the cultures are incubated for 4 h at 37°C. The optical density (OD) at 450 nm is measured using an ELx808 Absorbance Microplate Reader. The Procyanidin B1 concentration tested ranges from 50 to 200 μg/mL. Each sample is tested in triplicate [1]. |
| Synonyms | 原花青素B1, 原花青素 B1 |
| molecular weight | 578.52 |
| Molecular formula | C30H26O12 |
| CAS | 20315-25-7 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | DMSO: 23 mg/mL (39.76 mM), Sonication is recommended. |
| References | 1. Xing J, et al. Anti-inflammatory effect of procyanidin B1 on LPS-treated THP1 cells via interaction with the TLR4-MD-2 heterodimer and p38 MAPK and NF-κB signaling. Mol Cell Biochem. 2015 Sep;407(1-2):89-95. 2. Kanno H, et al. Protective effects of glycycoumarin and procyanidin B1, active components of traditional Japanese medicine yokukansan, on amyloid β oligomer-induced neuronal death. J Ethnopharmacol. 2015 Jan 15;159:122-8. 3. Shimada T, et al. Flavangenol (pine bark extract) and its major component procyanidin B1 enhance fatty acid oxidation in fat-loaded models. Eur J Pharmacol. 2012 Feb 29;677(1-3):147-53. |