Phytochemical Name : Methyl protogracillin (NSC-698792)

Properties Information
PhytoCAT-ID PhytoCAT-247
Phytochemical name or plant extracts Methyl protogracillin (NSC-698792)
PMID 11460001
Literature evidence Based on an analysis of the COMPARE computer program with methyl protogracillin as a seed compound, no compounds in the NCI's anticancer drug screen database have similar cytotoxicity patterns (mean graph) to that of methyl protogracillin, indicating a potential novel mechanism of the anticancer action involved.
IUPAC name (2S,3R,4R,5R,6S)-2-[(2R,3R,4S,5R,6R)-5-hydroxy-6-(hydroxymethyl)-2-[[(1S,2S,4S,6R,7S,8R,9S,12S,13R,16S)-6-methoxy-7,9,13-trimethyl-6-[(3R)-3-methyl-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxybutyl]-5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-en-16-yl]oxy]-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]oxy-6-methyloxane-3,4,5-triol
Phytochemicals’ class or type of plant extracts Saponin
Source of phytochemicals or plant Extracts Dioscorea collettii
Geographical availability China South-Central, China Southeast, Laos, Myanmar, Taiwan, Thailand, Vietnam
Plant parts Rhizome
Other cancers Breast cancer, Prostate cancer, Kidney cancer, Brain cancer, Colon cancer, Skin cancer
Target gene or protein NA
Gene or Protein evidence NA
Target pathways NA
IC50 NA
Potency As a result, it was found that methyl protogracillin was cytotoxic against all the tested cell lines from leukemia and solid tumors in the NCI's human cancer panel. It showed particular selectivity against one colon cancer line (KM12), one central nervous system (CNS) cancer line (U251), two melanoma lines (MALME-3M and M14), two renal cancer lines (786-0 and UO-31) and one breast cancer line (MDA-MB-231) with GI50< or =2.0 microM. The selectivity between these seven most sensitive lines and the least sensitive line (CCRF-CEM) ranged from 26- to 56-fold. In the same cancer subpanel, selectivity more than 15-fold was observed between MDA-MB-231 and MCF-7, NCI-ADR-RES, BT-549 in breast cancer.
Cell line/ mice model MDA-MB-231 , MCF-7, NCI-ADR-RES, BT-549, MALME-3M, M14, KM12, SF-539, U251MDA-MB-435,
Additional information  Based on an analysis of the COMPARE computer program with methyl protogracillin as a seed compound, no compounds in the NCI's anticancer drug screen database have similar cytotoxicity patterns (mean graph) to that of methyl protogracillin, indicating a potential novel mechanism of the anticancer action involved.
PubChem ID 44566783
Additional PMIDs 12820229
Additional sources of information https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:317817-1
Safety The preliminary toxicity studies showed that the maximum tolerant dose was 600 mg/kg for methyl protoneogracillin to mice.