Androgen receptor antagonist 1

Androgen receptor antagonist 1 is an orally available full androgen receptor (AR) antagonist with an IC50 of 59 nM[1]. Androgen receptor antagonist 1 (Compound 6) can be used in the synthesis of PROTAC AR degraders, which results 24% and 47 % AR protein degradation in LNCaP cells at 1 μM and 10 μM, respectively[2].

Research Areas >> Cancer

Signaling Pathways >> Others >> Androgen Receptor

IC50: 59 nM (androgen receptor)[1]

Androgen receptor antagonist 1 (Compound 26; 1 nM-100 μM) shows significant cell growth inhibition effects for LNCaP and LNAR cells but not DU145 cells[1]. Cell Proliferation Assay[1] Cell Line: Prostate cancer (CaP) cells (LNCAP, LNAR, and DU145) Concentration: 1 nM, 10 nM, 100 nM, 1 μM, 10 μM, 100 μM Incubation Time: 7 days Result: Antiproliferative effects of in LNCAP and LNAR cells.

Androgen receptor antagonist 1 (Compound 26; 100 mg/kg once a day for 5 weeks) demonstrates excellent in vivo tumor growth inhibition upon oral administration in a castration-resistant prostate cancer (CRPC) animal model[1]. Animal Model: Male athymic nude mice with LNCaP xenograft model of CRPC[1] Dosage: 100 mg/kg Administration: Orally once a day for 5 weeks Result: Demonstrated outstanding efficacy in inhibiting tumor growth. At the given doses (100 mg/kg once a day) nearly completely suppressed tumor growth (by 90 %) and the PSA levels (78%) after 5 weeks, with no detectable body weight loss for the period of time when animals were treated.

[1]. Guo C, et al. Discovery of aryloxy tetramethylcyclobutanes as novel androgen receptor antagonists. J Med Chem. 2011 Nov 10;54(21):7693-704.

[2]. Han X, et al. Discovery of ARD-69 as a Highly Potent Proteolysis Targeting Chimera (PROTAC) Degrader of Androgen Receptor (AR) for the Treatment of Prostate Cancer. J Med Chem. 2019 Jan 24;62(2):941-964.