3-乙酰基-11-羰基-β-乙酰乳香酸在Caco-2和MDCK细胞模型中的吸收研究
Chinese Traditional and Herbal Drugs(2013)
Abstract
目的 研究乳香提取物中3-乙酰基-11-羰基-β-乙酰乳香酸(AKBA)在Caco-2、MDCK-MDR1和MDCK-Wild细胞模型中的吸收转运机制.方法 利用Caco-2、MDCK-MDR1和MDCK-Wild细胞模型,研究AKBA由细胞层顶端(AP)→基底端(BL)和BL→AP的双向转运过程;采用LC-MS/MS法测定AKBA的量,计算表观渗透系数(Papp).结果 在Caco-2细胞模型中,50 μmol/L AKBA由AP→BL、BL→AP的Papp分别为7.9×10-7、1.5×10-7 cm/s,在MDCK-MDR1细胞模型中,50 μmol/L AKBA由AP→BL、BL→AP的Papp分别为2.6×10-7、0.8×10-7 cm/s,在MDCK-Wild细胞模型中,50 μmol/LAKBA由AP→BL、BL→AP的Papp分别为2.4×10-7、0.6×10 7 cm/s,3种细胞模型中外排率均小于2.结论 AKBA在肠道中吸收不良,不是P-糖蛋白的底物,推测其通过摄入型主动转运和被动扩散两种机制透过小肠上皮细胞.
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Key words
3-acetyl-11-keto-β-boswellic acid,Absorption characteristics,Boswellia carterif Birdw,Caco-2 cell,MDCK-MDR1,MDCK-Wild,P-gp,Transport mechanism
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