Daphnanes diterpenes from the latex of Hura crepitans L. and activity against human colorectal cancer cells Caco-2
2020
Abstract Hura crepitans (Euphorbiaceae) is a tree from South America that produces an irritant latex used as a fish poison. A bio-guided fractionation of an ethanolic extract of the latex led to the isolation and structural identification of three known daphnane-type diterpenes (1-3) including huratoxin (1), together with two new analogues (4, 5). Compound 1 was found to exhibit significant and selective cell growth inhibition against the colorectal cancer cell line Caco-2, with morphological modifications suggesting formations mimicking the intestinal crypt architecture. The underlying mechanism of 1 was further investigated, in comparison with 12-O-tetradecanoylphorbol-13-acetate (TPA), revealing two different mechanisms.
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