43. 5-fluorouracil 是一種癌症治療藥。下列關於此藥物作用的敘述..-阿摩線上測驗
1F
|
2F gayoula 高三下 (2021/07/25)
?5-FU exerts its anticancer effects through inhibition of thymidylate synthase (TS) and incorporation of its metabolites into RNA and DNA. ?5-Fluorouracil (5-FU) can activate p53 by more than one mechanism: incorporation of fluorouridine triphosphate (FUTP) into RNA, incorporation of fluorodeoxyuridine triphosphate (FdUTP) into DNA and inhibition of thymidylate synthase (TS) by fluorodeoxyuridine monophosphate (FdUMP) with resultant DNA damage. Ref. Nature.com |