Estradiol Glow
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- Purpose
- Fluorescently labeled Estradiol
- Characteristics
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Estradiol Glow is the ovarian steroid hormone 17-ß-Estradiol labeled with a novel low molecular weight orange/red fluorophor thus retaining its chemical properties and it´s biological activity. This allows for a wide range of applications including
analysis of in vivo and in vitro steroid uptake in real time
monitoring of intracellular and subcellular steroid transport
studies on steroid-binding proteins
use as tracer for steroid immunoassays (to replace isotopes or enzymes
photodynamic elimination of estrogen sensitive tissues and cells in experimental settings with possible future clinical implications
Estradiol Glow can be histologically fixed using formaldehyde or glutaraldehyde without any significant loss of fluorescence intensity. Typical concentration range used for cell culture experiments: 10-5M - 10-7M (may vary depending on cell line and individual experimental set-up). - Purity
- > 97 % (DC, NMR)
- Excitation Emission
- Spectroscopic Properties: λexc 467 nm; λem 618 nm; ε 29.0 L mmol-1 cm-1 (PBS pH 7.4) λexc 501 nm; λem 596 nm; ε 52.0 L mmol-1 cm-1 (ethanol)
- Formula
- C47H67BrN2O2
- Solubility
- High: MeOH, EtOH, PrOH, DMSO, DMF Moderate: acetone, CH2Cl2, CH3Cl, THF Low: H2O and aqueous buffer systems (after presolution in DMSO >1 μM) Insoluble: Et2O, hydrocarbons such as hexane, heptane, benzene
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- Restrictions
- For Research Use only
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- Handling Advice
- store dark
- Storage
- 4 °C
- Storage Comment
- store at 4 °C
- Expiry Date
- 12 months
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- Background
- Identification of steroid sensitive cells in target tissues has so far been attempted with either radio labelled hormones and autoradiography or with in situ hybridization and immuno-histochemistry for receptor proteins. Numerous studies have been performed with steroid hormones labelled with either enzymes, fluorophors or immunogenic markers, all resulting in loss of biological properties and hormonal function. Estradiol Glow is 17-ß-estradiol, labelled in a novel way with a low molecular weight biocompatible fluorophor, thus retaining biological activity of the ovarian hormone. Systemic injections into experimental animals revealed accumulation of the fluorescent steroid in nuclei of known estrogen target tissues, including the brain. Estradiol Glow allows new insights into cellular uptake, intracellular transport and subcellular binding. Mechanisms of rapid steroid actions become transparent on the single cell level.
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