NCIt definition : A semisynthetic agent related to camptothecin with potent antitumor and antiviral
properties. Rubitecan binds to and inhibits the enzyme topoisomerase I and induces
protein-linked DNA single-strand breaks, thereby blocking DNA and RNA synthesis in
dividing cells; this agent also prevents repair of reversible single-strand DNA breaks.
(NCI04);
Alternative definition : NCI-GLOSS: An alkaloid drug belonging to a class of anticancer agents called topoisomerase
inhibitors.;