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6 protocols using diarylpropionitrile

1

Estrogen Receptor Signaling Assay

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17β-estradiol (E2) (No. E2257), β-Estradiol 6-(O-carboxymethyl)oxime:BSA (BSA-E2) (No. E5630), 5-fluorouracil (5-FU) (No. 03738) were purchased from Sigma-Adrich and dissolved in 100% ethanol and PBS respectively. ERβ agonist Diarylpropionitrile (DPN) (No. 1494), ERα agonist propyl-pyrazole-triol (PPT) (No. 1426), ICI 182.780 (No. 1047) and ERβ antagonist 4-[2-phenyl-5,7-bis (tri-fluoro-methyl) pyrazolo [1,5-a] pyrimidin-3-yl] phenol (PHTPP) (No. 2662) were purchased from Tocris and dissolved in 100% ethanol. Transfection reagent FuGENE® HD (No. 4709705001) were purchased from Roche. The antibodies used are mouse anti-MLH1 (PAB11885, Abnova), mouse anti-ERα (ab32063, Abcam), mouse anti-ERβ (ab92306, Abcam), rabbit anti-c-Fos (ab27793, Abcam), mouse anti-β-actin (60008-1-Ig, Proteintech).
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2

Estrogen Receptor Agonists in Animal Study

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Propylpyrazoletriol (PPT) and diarylpropionitrile (DPN) were purchased from Tocris Bioscience (Minneapolis, MN, USA). Zymosan, estradiol cypionate (EC) and β-estradiol-water soluble were purchased from Sigma Chemical Company (St. Louis, MO, USA). Veterinary pentabiotic was purchased from Fort Dodge - Zoetis (São Paulo, SP, Brazil). estradiol cypionate, PPT and DPN were dissolved in corn oil while Zymosan and β-estradiol-water soluble were suspended and dissolved in sterile saline (0.9%), respectively.
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3

Estrogen Receptor Signaling in Breast Cancer

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The human breast cancer MCF-7 and MDA-MB-231 cell lines were purchased from State Key Laboratory of Oncology in Southern China (Sun Yat-sen University Cancer Center, Guangzhou, People’s Republic of China). Cells were cultured in DMEM containing glucose (4.5 g/L; Thermo Fisher Scientific, Waltham, MA, USA) supplemented with 10% FBS (Thermo Fisher Scientific) at 37°C in 5% CO2.
GEN and 17β-estradiol (E2) were obtained from Sigma-Aldrich (St Louis, MO, USA). The selective ERβ agonist diaryl propionitrile (DPN) and the selective ERβ antagonist 4-[2-phenyl-5,7-bis(trifluoromethyl)pyrazolo[1,5-a]- pyrimidin-3-yl]phenol (PHTPP) were purchased from Tocris Bioscience (Bristol, UK).
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4

Estrogen and Cocaine Modulation Study

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Water-soluble E2 (encapsulated in [2-Hydroxypropyl]-β-cyclodextrin) and (2-Hydroxypropyl)-β-cyclodextrin vehicle (VEH) were purchased from Sigma-Aldrich. E2 was dissolved in saline to a final concentration of 0.02 mg/mL and administered i.p. at a dose of 0.2 mg/kg according to Gresack et al (Gresack and Frick, 2006a (link), 2006b (link)). VEH-treated mice received the same amount of β-cyclodextrin as E2-treated mice. The ERβ agonist diarylpropionitrile (DPN) and the ERα agonist 4,4’,4’’-(4-Propyl-[1H]-pyrazole-1,3,5-triyl)trisphenol (PPT) were purchased from Tocris. Solutions were prepared in sesame oil with 10% ethanol VEH to a final concentration of 0.5 mg/ml. Volumes of 50 μL were injected s.c. for a dose of ~1 mg/kg. Cocaine hydrochloride (Mallinckrodt Pharmaceuticals) was dissolved in saline and administered i.p. at a dose of 5 mg/kg.
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5

Antibody Reagents for Cell Signaling

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Antibodies used in this study were summarized in Table 1. ICI 182,780, 4,4,4-(4-propyl-[1H]-pyrazole-1,3,5-triyl)trisphenol (PPT), diarylpropionitrile (DPN), 1,3-Bis(4-hydroxyphenyl)-4-methyl-5-[4-(2-piperidinylethoxy) phenol]-1Hpyrazoledihydrochloride (MPP), 4-[2-Phenyl-5,7-bis (trifluoromethyl)pyrazolo[1,5-a] pyrimidin-3yl]phenol (PHTPP) were from Tocris (Ellisville, MO). β-cyano-L-alanine (BCA) was from Cayman Chemical (Ann Arbor, MI). Estradiol-17β (E2β), fatty acid free bovine serum albumin (BSA), O-(carboxymethyl) hydroxylamine hemihydrochloride (CHH), fetal bovine serum (FBS), sodium dodecyl sulfate (SDS), hydroxyethylpiperazine-N-2-ethanesulfonic acid (HEPES), and all other chemicals unless specified were from Sigma (St. Louis, MO).
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6

Signaling Pathway Profiling with Selective Estrogen Receptor Agonists

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E2, diarylpropionitrile (DPN), and propyl pyrazole triol (PPT) were purchased from Tocris (resuspended in ethanol) and used at a final concentration of 100 nM. PGE2 was purchased from Cayman, resuspended in ethanol, and used at a final concentration of 50–100 nM. Phosphatase Inhibitor Cocktail (cat # P5726) and Protease Inhibitor Cocktails (Cat # P8340) were purchased from Sigma (St. Louis, MO) and diluted 1:100 in the appropriate lysis buffer. The following antibodies were used for immunoblotting: SGK1 (Cell Signaling, Danvers, MA, Cat # 3272), cleaved PARP (Cell Signaling, Cat# 9542), pFOXO3a (Cell Signaling, Cat # 9464), FOXO3a (Cell Signaling, Cat# 2497), and β-actin (Sigma, Cat # A1978). Anti-SGK1 (Enzo, Farmingdale, NY, Cat# ADI-KAP-PK015-D) antibody was used for immunohistochemistry.
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