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α-Estradiol Catalog No.GC15975

Endogenous estrogen receptor ligand

Size Price Stock Qty
10mM (in 1mL EtOH)
$35.00
In stock
50mg
$63.00
In stock

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Sample solution is provided at 25 µL, 10mM.

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Protocol

Cell experiment:

Mouse embryonic fibroblast (MEF) cells are treated for the indicated time with Alpha-Estradiol (17 α-E2) or 17 β-E2 at 10 μM concentration. Inflammation is induced by LPS at a concentration of 10 ng/mL either alone or in combination with the respective estrogen[2].

Animal experiment:

Newborn mice are randomLy assigned to six groups according to the kind of treatment: room air with vehicle injection (control, group 1), hyperoxia with vehicle injection (control, group 2), hyperoxia with 0.01 μg Alpha-Estradiol injection (group 3), hyperoxia with 0.1 μg Alpha-Estradiol injection (group 4), hyperoxia with 1.0 μg Alpha-Estradiol injection (group 5), and hyperoxia with 1.0 μg Alpha-Estradiol and 10.0 μg ICI182780 injection (antagonist of estrogen receptor α and β) (group 6). The pups receive daily subcutaneous injections of either Alpha-Estradiol in vehicle [dissolved in ethanol and diluted in 0.05 mL/mouse of phosphate-buffered saline (PBS)] or vehicle alone from postnatal days (PND) 7-16. On PND 7, the pups in the hyperoxia and Alpha-Estradiol-treatment groups are exposed to hyperoxia (75 ± 2 % O2) for 5 days (PND 7-12) and then returned to normoxia (room air) for 5 days, along with the nursing mothers, whereas pups in the normoxia group are kept in normoxia from PND 7-17. The pups are humanely euthanized on PND 9, 13 (14), and 17[3].

References:

[1]. Schriefers H, et al. Inhibition of testosterone metabolism by 17-alpha-estradiol in rat liver slices. Arzneimittelforschung. 1991 Nov;41(11):1186-9.
[2]. Santos RS, et al. The effects of 17 alpha-estradiol to inhibit inflammation in vitro. Biol Sex Differ. 2017 Sep 6;8:30.
[3]. Zhang HB, et al. 17-Alpha-estradiol ameliorating oxygen-induced retinopathy in a murine model. Jpn J Ophthalmol. 2012 Jul;56(4):407-15.

Chemical Properties

Cas No. 57-91-0 SDF
Chemical Name (8R,9S,13S,14S,17R)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
Canonical SMILES O[C@H]1[C@]2(C)[C@@H](CC1)[C@H](CCC3=C4C=CC(O)=C3)[C@@H]4CC2
Formula C18H24O2 M.Wt 272.38
Solubility ≥13.15mg/mL in Ethanol Storage Store at RT
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
Shipping Condition Evaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request
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Background

Alpha-Estradiol is a weak estrogen and a 5α-reductase inhibitor which is used as a topical medication in the treatment of androgenic alopecia.

Alpha-Estradiol (17 alpha-Estradiol) is a 5α-reductase inhibitor, and inhibits testosterone metabolism catalyzed by 5 alpha-reductase[1]. Alpha-Estradiol (17 Alpha-estradiol, 10 μM) attenuates LPS-induced inflammatory markers in both C57BL/6J male and female mouse embryonic fibroblast (MEF) cells, primary pre-adipocytes and differentiated 3T3-L1 adipocytes in an ERα-dependent manner, and such effects are through decreased NFκB-p65 and increased ERα protein expression[2].

Alpha-Estradiol (17-alpha-estradiol, 0.01, 0.1, 1 μg) significantly reduces the percentage of central avascular/total retina area of the mouse pups. Alpha-Estradiol (1 μg) markedly decreasesmalondialdehyde (MDA) levels on postnatal days (PND) 9, 13, and 17 in retinas of hyperoxia-exposed pups. Alpha-Estradiol (1 μg) also decreases the number of NADPH-oxidase-positive cells, NADPH oxidase concentration and activity in retinas of the pups. In the 1.0-μg Alpha-Estradiol-treated pups, VEGF retinal concentrations are high on PND 9 but lower on PND 14 and 17. The best effect in retinas of 1.0-μg Alpha-Estradiol-treated pups is partly reversed by ICI182780 on PND 14 and 17[3].

References:
[1]. Schriefers H, et al. Inhibition of testosterone metabolism by 17-alpha-estradiol in rat liver slices. Arzneimittelforschung. 1991 Nov;41(11):1186-9.
[2]. Santos RS, et al. The effects of 17 alpha-estradiol to inhibit inflammation in vitro. Biol Sex Differ. 2017 Sep 6;8:30.
[3]. Zhang HB, et al. 17-Alpha-estradiol ameliorating oxygen-induced retinopathy in a murine model. Jpn J Ophthalmol. 2012 Jul;56(4):407-15.