毒理性
许多呋喃香豆素的作用机制是基于它们能够与DNA以及其它细胞组分如RNA、蛋白质、以及膜中发现的几种蛋白质(如磷脂酶A2和C、钙依赖性和cAMP依赖性蛋白激酶以及表皮生长因子)形成光加合物。呋喃香豆素嵌入DNA的碱基对之间,并在紫外线A照射后,产生环加成物(L579)。6,7-二羟基佛手苷(bergamottin)也作为CYP3A4的抑制剂(A3109)。
The mechanism of action many furocoumarins is based on their ability to form photoadducts with DNA and other cellular components such as RNA, proteins, and several proteins found in the membrane such as phospholipases A2 and C, Ca-dependent and cAMPdependent protein-kinase and epidermal growth factor. Furocoumarins intercalate between base pairs of DNA and after ultraviolet-A irradiation, giving cycloadducts (L579). 6,7-Dihydroxybergamottin also acts as a CYP3A4 inhibitor (A3109).
来源:Toxin and Toxin Target Database (T3DB)