NCIt definition : A semi-synthetic camptothecin analogue, with potential antitumor activity. Upon administration,
belotecan binds to and inhibits the activity of topoisomerase I, stabilizing the cleavable
complex of topoisomerase I-DNA, which inhibits the religation of single-stranded DNA
breaks generated by topoisomerase I; lethal double-stranded DNA breaks occur when
the topoisomerase I-DNA complex is encountered by the DNA replication machinery, DNA
replication is disrupted, and the tumor cell undergoes apoptosis. Topoisomerase I
is an enzyme that mediates reversible single-strand breaks in DNA during DNA replication.;
Alternative definition : NCI-GLOSS: The active ingredient in a substance being studied in the treatment of
small cell lung cancer and other types of cancer. It blocks certain enzymes needed
for cell division and DNA repair, and it may kill cancer cells. It is a type of camptothecin
analog and a type of topoisomerase inhibitor.;
UNII : 27Z82M2G1N;
InChIKey : LNHWXBUNXOXMRL-VWLOTQADSA-N;
CAS number : 256411-32-2; a href https://gsrs.ncats.nih.gov/ginas/app/beta/browse-substance?search 256411-32-2
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