| Description | Soyasaponin Ab may represent a viable candidate for effective vaccine adjuvant, TLR4 receptor dependent pathway may be involved in immune stimulatory effects of soyasaponin Ab. |
| In vitro | Soyasaponin Ab抑制结肠缩短、髓过氧化物酶活性、环氧化酶-2 (COX-2) 和诱导型一氧化氮合酶 (iNOS) 的表达，以及转录因子核因子-κB (NF-κB) 的激活。Soyasaponin Ab (1, 2, 5, 和 10 μM) 抑制了NO (IC(50) = 1.6 ± 0.1 μM) 和前列腺素E(2) (IC(50) = 2.0 ± 0.1 ng/mL) 的产生，肿瘤坏死因子 (TNF)-α± (IC(50) = 1.3 ± 0.1 ng/mL)、白细胞介素 (IL)-1β (IC(50) = 1.5 ± 0.1 pg/mL) 和 toll样受体 (TLR)4 的表达，以及白细胞介素-1受体相关激酶 (IRAK)-1 在LPS刺激的腹腔巨噬细胞中的磷酸化。Soyasaponin Ab弱抑制了ERK、JNK 和 p38 的磷酸化。Soyasaponin Ab显著减少了与腹腔巨噬细胞结合的Alexa-Fluor-594共轭的LPS。在TLR4 siRNA处理的腹腔巨噬细胞中（TLR4的敲减效率 > 94%），Soyasaponin Ab对TLR4表达或LPS诱导的NF-κB激活无影响。 |
| molecular weight | 1437.52 |
| Molecular formula | C67H104O33 |
| CAS | 118194-13-1 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | DMSO: 100 mg/mL (69.56 mM) |
| References | 1. Lee IA, et al. Soyasaponin Ab ameliorates colitis by inhibiting the binding of lipopolysaccharide (LPS) to Toll-like receptor (TLR)4 on macrophages. J Agric Food Chem. 2011 Dec 28;59(24):13165-72. 2. Yang SH, et al. Soyasaponins Aa and Ab exert an anti-obesity effect in 3T3-L1 adipocytes through downregulation of PPARγ. Phytother Res. 2015 Feb;29(2):281-7. |