NCIt definition : A bufadienolide compound extracted from the dried venom secreted by the parotid glands
of toads and one of the glycosides in the traditional Chinese medicine ChanSu, with
potential antineoplastic activity. Although the mechanism of action of cinobufagin
is still under investigation, it has been found to suppress cancer cell proliferation
and cause apoptosis in cancer cells via a sequence of apoptotic modulators that include
mitochondrial Bax and cytosolic chromosome c, and caspases 3, 8, and 9. Possible upstream
mediators of cinobufagin-induced apoptosis include Fas and p53.;