Catalog No.S1191 Synonyms: ICI-182780, ZD 9238
Molecular Weight(MW): 606.77
Fulvestrant is an estrogen receptor (ER) antagonist with IC50 of 0.94 nM in a cell-free assay.
Cited by 10 Publications
6 Customer Reviews
PTPH1 confers breast cancer cell sensitivity to fulvestrant. E and F, PTPH1 overexpression increases the growth inhibition by fulvestrant. PTPH1 was overexpressed by a Tet-on system or a stable transfection, and resultant cells were incubated with fulvestrant as indicated for about 2 weeks. Colony formed was stained and counted. Results shown are normalized to its own solvent control of Vector and PTPH1-overexpressed cells, respectively (means ± SD; n = 3–5) with insets showing PTPH1 overexpression. *, versus vector or no Tet cells for E and F.
Mol Cancer Ther 2014 13(1), 230-8. Fulvestrant purchased from Selleck.
Fulvestrant resistance induced by 6 different ZF-TFs. (A) Drug sensitivity of fulvestrant-selected MCF7 ZF-TF-transduced cells. MCF7 cells transduced with one of six different ZF-TF-expressing retroviruses selected first in puromycin (the transduction selection marker) and then in fulvestrant for 1 month were grown in the absence of fulvestrant for 7 days and then challenged with 100 nM fulvestrant or vehicle (0.1% ethanol) for 21 days followed by crystal violet staining and visualization. Data are representative of triplicate experiments.
PLoS One 2011 6, e21112. Fulvestrant purchased from Selleck.
Fulvestrant resistance induced by 6 different ZF-TFs. (B and C) Growth curves of MCF7 and T47D cells in the presence and absence of fulvestrant. Comparison of cell growth rates (cell number, mean +/2 SEM, n = 8; time in days as indicated) of MCF7 and T47D cells stably transduced with control retrovirus or one of six different ZF-TF-expressing retroviruses (7, 19, 64, 70, 83 and 115) in the presence (blue line) or absence (pink line) of fulvestrant.
PLoS One 2011 6, e21112. Fulvestrant purchased from Selleck.
CDK4/6 inhibitor resistance promotes diminished ER expression and activity. (a and b) Proliferation of MCF-7 and MR cells in the presence of different concentrations of ICI (a) or 4-hydroxytamoxifen (4-OHT) (b) was measured by the alamarBlue assay and plotted as % inhibition of proliferation against log concentration of inhibitor. Each data point represents the average value±s.d. of six replicates obtained in three independent experiments. (c) MCF-7 and MR cells were treated with different concentrations of ICI, collected after 24 h and then immunoblotted with the indicated antibodies.
Oncogene, 2017, 36(16):2255-2264. Fulvestrant purchased from Selleck.
A: Time dependent loss of MGMT activity in ERα-positive MCF7 and T47D tumor cells but not in ERα-negative MDAMB-468 cells after 1 μmol/L Fulvestrant treatment (upper panel). Concentration dependent inhibition of MGMT activity in MCF7 and T47D cells but not in MDA-MB-468 cells after a 72 hours exposure to fulvestrant (lower panel). The data represents the mean of two independent experiments in duplicate and the last time point (72 hours) as assessed by student's t-test was significant at P < 0.05. B: Decreased MGMT and ER-α protein levels in MCF7 cells after 48 hours and 72 hours fulvestrant exposure. ICI is fulvestrant, also called ICI-182,780. C: Decreased MGMT and ER-α protein levels in T47D cells after 48 hours and 72 hours fulvestrant exposure.
J Biomed Res, 2016, 30(5):393-410. Fulvestrant purchased from Selleck.
Purity & Quality Control
Choose Selective Estrogen/progestogen Receptor Inhibitors
|Description||Fulvestrant is an estrogen receptor (ER) antagonist with IC50 of 0.94 nM in a cell-free assay.|
Fulvestrant is an effective inhibitor of the growth of ER-positive MCF-7 (with IC50 of 0.29 nM) but with no effect on the growth of ER-negative BT-20 human breast cancer cells. Fulvestrant causes accumulation of cells in G0/G1 and also reduces the proportion of cells capable of continued DNA synthesis.  Fulvestrant competitively inhibits binding of oestradiol to the estrogen receptor. Fulvestrant blocks nuclear localization of the ER through impairing receptor dimerisation, and energy-dependent nucleo-cytoplasmic shuttling. Because of the instability of fulvestrant-ER complex, the binding of Fulvestrant with ER finally results in accelerated degradation of the ER protein.  Fulvestrant (10 nM) not only decreases IGF-IR mRNA levels but also decreases the half-life.  Treatment with 100 μM Fulvestrant leads to a time dependent increase of TNFR1 and TRADD steady-state mRNA levels in MCF-7 cells.  Fulvestrant is capable of down-regulating androgen receptor expression and diminishes androgenic responses in LNCaP human prostate cancer cells. Fulvestrant also significantly attenuates R1881-stimulated growth by 70%.  Fulvestrant is able to modulate mitosis and cell death in immature cerebellar neurons via rapid activation of MAPK. 
|In vivo||Fulvestrant is devoid of uterotropic activity, and when co-administered with estradiol, it effectively blocks the uterotropic action of estradiol with ED50 of 0.06 mg/kg/day s.c. in immature female rats. A single s.c. injection of 5 mg of Fulvestrant suspension blocks completely the growth of MCF-7 xenografts. The growth of transplants of the BrlO human breast tumor is also suppressed effectively by 10 μM Fulvestrant.  Fulvestrant (10 mg/rat, s.c.) reduces the androgen receptor expression, ERK1/2 phosphorylation and cell proliferation in the rat ventral prostate.  Fulvestrant also displays anti-angiogenesis in the chick egg chorioallantoic membrane. |
-  Wakeling AE, et al. Cancer Res, 1991, 51(15), 3867-3873.
-  Osborne CK. Br J Cancer, 2004, 90 Suppl 1, S2-6.
-  Huynh H, et al. Clin Cancer Res, 1996, 2(12), 2037-2042.
-  Smolnikar K, et al. Breast Cancer Res Treat, 2000, 63(3), 249-259.
-  Bhattacharyya RS, et al. Mol Cancer Ther, 2006, 5(6), 1539-1549.
-  Wong JK, et al. J Neurosci, 2003, 23(12), 4984-4995.
-  Fernandes SA, et al. Int J Androl, 2011, 34(5 Pt 1), 486-500.
-  Gagliardi A, et al. Cancer Res, 1993, 53(3):533-535.
|In vitro||DMSO||100 mg/mL (164.8 mM)|
|Ethanol||100 mg/mL warmed (164.8 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+2% Tween 80+ddH2O
For best results, use promptly after mixing.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
|Synonyms||ICI-182780, ZD 9238|
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* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT03691493||Not yet recruiting||Anatomic Stage IV Breast Cancer AJCC v8|Estrogen Receptor Positive|HER2/Neu Negative|Metastatic Breast Carcinoma|Metastatic Malignant Neoplasm in the Bone|Progesterone Receptor Positive|Prognostic Stage IV Breast Cancer AJCC v8||Emory University|Pfizer||December 1 2018||Phase 2|
|NCT03554044||Not yet recruiting||Anatomic Stage III Breast Cancer AJCC v8|Anatomic Stage IIIA Breast Cancer AJCC v8|Anatomic Stage IIIB Breast Cancer AJCC v8|Anatomic Stage IIIC Breast Cancer AJCC v8|Anatomic Stage IV Breast Cancer AJCC v8|Estrogen Receptor Positive|HER2/Neu Negative|Invasive Breast Carcinoma|Prognostic Stage III Breast Cancer AJCC v8|Prognostic Stage IIIA Breast Cancer AJCC v8|Prognostic Stage IIIB Breast Cancer AJCC v8|Prognostic Stage IIIC Breast Cancer AJCC v8|Prognostic Stage IV Breast Cancer AJCC v8|Recurrent Breast Carcinoma||University of California San Francisco|Amgen||December 11 2018||Phase 1|
|NCT03531645||Not yet recruiting||Malignant Neoplasms of Female Genital Organs||M.D. Anderson Cancer Center|AstraZeneca|Pfizer||November 2018||Phase 2|
|NCT03685331||Not yet recruiting||Metastatic Breast Cancer|Locally Advanced Breast Cancer|Advanced Breast Cancer|BRCA2 Mutation|BRCA1 Mutation||Abramson Cancer Center of the University of Pennsylvania||September 2018||Phase 1|
|NCT03584009||Recruiting||Estrogen Receptor-positive (ER+)/Human Epidermal Growth Factor Receptor (HER2)-Negative Locally Advanced or Metastatic Breast Cancer||Hoffmann-La Roche||September 13 2018||Phase 2|
|NCT03643510||Recruiting||Adenocarcinoma of Endometrium||Memorial Sloan Kettering Cancer Center|Eli Lilly and Company||August 21 2018||Phase 2|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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Frequently Asked Questions
Is there any information for the half-life of fulvestrant (Cat No.S1191)?
S1191, is about 13.5 to 18.5 hours in vivo: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2750771/. The half life of these compounds in cell culture might be different and we generally recommend replenishing with fresh drug every 24-48 hours.