Coumestrol

Coumestrol, a phytoestrogen present in soybean products, exhibits activities against cancers, neurological disorders, and autoimmune diseases. It suppresses proliferation of ES2 cells with an IC50 of 50 μM.

Signaling Pathways >> Others >> Estrogen Receptor/ERR

Research Areas >> Cancer

Natural Products >> Phenylpropanoids

IC50: 50 μM[1]

Coumestrol exerts chemotherapeutic effects via PI3K and ERK1/2 MAPK pathways. Coumestrol inhibits viability and invasion, and induces apoptosis of ES2 (clear cell-/serous carcinoma origin) cells. In addition, immunoreactive PCNA and ERBB2, markers of proliferation of ovarian carcinoma, are attenuated in their expression in coumestrol-induced death of ES2 cells. Phosphorylation of AKT, p70S6K, ERK1/2, JNK1/2 and p90RSK is inactivated by coumestrol treatment in a dose- and time-dependent manner[1]. Coumestrol inhibits proliferation and induces apoptosis in MCF-7 cells, which is prevented by copper chelator neocuproine and ROS scavengers. Coumestrol treatment induces ROS generation coupled to DNA fragmentation, up-regulation of p53/p21, cell cycle arrest at G1/S phase, mitochondrial membrane depolarization and caspases 9/3 activation[2].

To determine dose-dependent effects of coumestrol, ES2 cells are treated with different concentrations (0, 1, 10, 20, 50 or 100 μM) of coumestrol[1]. Coumestrol is dissolved in DMSO to prepare a 3 mM stock. Breast cancer MCF-7 cells are treated with increasing concentrations of coumestrol for 24, 48 and 72 h. Then, 20 μL of MTT (5 mg/mL) is added each well and re-incubated for additional 3 h. Formazan blue crystals formed are dissolved in 100 μL of DMSO. Absorbance is read at 570 nm using ELISA plate reader[2].

[1]. Lim W, et al. Coumestrol suppresses proliferation of ES2 human epithelial ovarian cancer cells. J Endocrinol. 2016 Mar;228(3):149-60.

[2]. Zafar A, et al. Cytotoxic activity of soy phytoestrogen coumestrol against human breast cancer MCF-7 cells: Insights into the molecular mechanism. Food Chem Toxicol. 2017 Jan;99:149-161.

Elacestrant dihydrochloride | AZD9496 | Kaempferol | XCT 790 | Estrone | GDC-0810 | (20S)-Protopanaxatriol | 27-Hydroxycholesterol | Diethylstilbestrol | PHTPP | 2,3-bis(4-hydroxyphenyl)propionitrile | 4',7-Isoflavandiol | cholesterol | Chrysin | Endoxifen (Z-isomer hydrochloride)

DATA ITEMS CITED :

8

MOLECULAR FORMULA :

C15-H8-O5

MOLECULAR WEIGHT :

268.23

WISWESSER LINE NOTATION :

T D6 B566 CO KVOJ FQ OQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Subcutaneous

DOSE :

2500 ug/kg

SEX/DURATION :

lactating female 1-5 day(s) post-birth

TOXIC EFFECTS :

Reproductive - Maternal Effects - uterus, cervix, vagina Reproductive - Maternal Effects - other effects Endocrine - estrogenic

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

234 mg/kg

SEX/DURATION :

female 1-13 day(s) after conception

TOXIC EFFECTS :

Reproductive - Fertility - other measures of fertility

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

35 gm/kg

SEX/DURATION :

female 14 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - menstrual cycle changes or disorders Reproductive - Fertility - female fertility index (e.g. # females pregnant per # sperm positive females; # females pregnant per # females mated) Reproductive - Effects on Embryo or Fetus - other effects to embryo

TYPE OF TEST :

Unscheduled DNA synthesis

MUTATION DATA

TYPE OF TEST :

Mutation in mammalian somatic cells

TEST SYSTEM :

Rodent - hamster Lung

DOSE/DURATION :

10 umol/L

REFERENCE :

FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 35,605,1997