Synthesis, pharmacological evaluation and mechanistic study of scutellarin methyl ester -4′-dipeptide conjugates for the treatment of hypoxic-ischemic encephalopathy (HIE) in rat pups
作者:Tao Li、Dirong Wu、Yang Yang、Tao Xiao、Yilin Han、Jing Li、Ting Liu、Li Li、Zeqin Dai、Yongjun Li、Xiaozhong Fu
DOI:10.1016/j.bioorg.2020.103980
日期:2020.8
various analytical methods. Scutellarin methyl ester-4′-Val-homo-Leu dipeptide (5k) was determined as the optimal candidate with a high apparent permeability coefficient (Papp A to B) of 1.95 ± 0.24 × 10−6 cm/s, low ER (Papp BL to AP/Papp AP to BL) of 0.52 in Caco-2 cells, and high uptake of 25.47 μmol/mg/min in hPepT1-MDCK cells. Comprehensive mechanistic studies demonstrated that pre-treatment of PC12
成功设计并合成了一系列新颖的黄characteristics素甲基酯-4'-二肽缀合物,这些缀合物具有活性转运特征,并能防止由缺氧缺血性脑病(HIE)引起的病理损伤。使用各种分析方法评估了所得化合物的理化性质,以及基于Caco-2细胞的通透性和对hPepT1-MDCK细胞的吸收。黄cut素甲酯4'-Val-homo-Leu二肽(5k)被确定为最佳候选物,其表观渗透系数(P app A至B)为1.95±0.24×10 -6 cm / s,ER较低( P app BL到AP / P app AP到BL)在Caco-2细胞中为0.52),在hPepT1-MDCK细胞中高摄取为25.47μmol/ mg / min。全面的机理研究表明,用5k预处理PC12细胞可产生更强的抗氧化活性,这表现为丙二醛(MDA)和活性氧(ROS)含量显着降低,H 2 O衰减2-诱导凋亡细胞在sub-G1峰中蓄积,并改善