Elacestrant Datasheet DC Chemicals
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Cat.No DC70104
Name Elacestrant

Chemical Properties

CAS 722533-56-4
Formula C30H38N2O2
MW 458.6349
Storage 2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Biological activity

Description CAS NO.:722533-56-4
Product Name:Elacestrant
Synonyms:RAD-1901
EINEC:
Molecular Formula:C30H38N2O2
Molecular Weight:458.6349
Target: IC50: 48 nM (ERα), 870 nM (ERβ)[1]
In Vivo RAD1901 produces a robust and profound inhibition of tumor growth in MCF-7 xenograft models. RAD1901-treated animals survived longer than those treated with either control or fulvestrant. RAD1901 preserves ovariectomy-induced bone loss and preventes the uterotropic effects of E2[1].
In Vitro RAD1901 selectively binds to and degrades the ER and is a potent antagonist of ER-positive breast cancer cell proliferation. RAD1901 treatment exhibits dose-dependent inhibition of ERα expression, with an EC50 of 0.6 nM. Treatment of ER-positive MCF-7 cells with E2 results in a potent and dose-dependent increase in proliferation, with an EC50 of 4 pM. Treatment of cells with RAD1901 in the presence of 10 pM E2 resultsin a dose-dependent decrease in proliferation, with an IC50 value of 4.2 nM[1].
Kinase Assay RAD1901 is serially diluted in ES2 screening buffer to concentrations ranging from 10 to 10-6 μM. Aliquots (25 μL) of each dilution are added to a black 384-well microtiter plate, in triplicate. The ER–Fluormone complex is prepared as directed, with 2 nM Fluormone ES2 and 30 nM ER. A 25 μL aliquot of this preparation is added to each reaction well. The plates are sealed and incubated in the dark at room temperature for 4 h. Polarization values for each well are measured and plotted against the concentration of the test compound. The IC50 is determined from at least three independent experiments, with E2 serving as a positive control[1].
Cell Assay For proliferation assays, MCF-7 cells are treated with 2% charcoal-stripped FBS–MEM containing 10 pM E2 with either RAD1901 or additional E2 at concentrations ranging from 10-9 to 1 M. The medium is removed after 48 h of incubation and the cells are lysed by adding 100 μl of CellTiter Glo. The plates are gently mixed on a plate shaker for 10 min before the luminescent signal is measured on a luminometer. The EC50 and IC50of the test compound are then defined[1].
Animal Administration Mice: RAD1901 is stored as a dry powder, formulated for use as a homogenous suspension in 0.5% (w/v) methylcellulose in deionized water. Fourteen days after tumor cell implantation, the mice are randomized into nine groups of 15 animals each and treated with vehicle, tamoxifen (1 mg/animal every other day), fulvestrant (0.5 mg/animal daily), or RAD1901 (0.3, 1, 3, 10, 30, 60, 90, and 120 mg/kg daily). Tumor volumes are evaluated twice per week[1].

References

[1]. Garner F, et al. RAD1901: a novel, orally bioavailable selective estrogen receptor degrader that demonstrates antitumor activity in breast cancer xenograft models. Anticancer Drugs. 2015 Oct;26(9):948-56.
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