NCIt related terms : 9-AMINOCAMPTOTHECIN; 9-Amino-20-(S)-camptothecin;
NCIt definition : A water-insoluble camptothecin derivative. Aminocamptothecin binds to the nuclear
enzyme topoisomerase I, thereby inhibiting repair of single-strand DNA breakages.
Because the terminal lactone ring of aminocamptothecin required for the agent's antitumor
activity spontaneously opens under physiological conditions to an inactive carboxy
form, the drug must be administered over an extended period of time to achieve effective
cytotoxicity. (NCI04);
Alternative definition : NCI-GLOSS: An anticancer drug that belongs to the family of drugs called topoisomerase
inhibitors.;