Corticosterone

Catalog No.S4752 Synonyms: 17-deoxycortisol, 11β,21-dihydroxyprogesterone

Corticosterone Chemical Structure

Molecular Weight(MW): 346.46

Corticosterone, the major stress hormone, is an adrenocortical steroid that has modest but significant activities as a mineralocorticoid and a glucocorticoid.

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Biological Activity

Description Corticosterone, the major stress hormone, is an adrenocortical steroid that has modest but significant activities as a mineralocorticoid and a glucocorticoid.
Targets
Glucocorticoid receptor [2]
In vitro

Corticosterone, via SGK phosphorylation of GDI at Ser-213, increases the formation of GDI-Rab4 complex, facilitating the functional cycle of Rab4 and Rab4-mediated recycling of AMPARs to the synaptic membrane. It enhances AMPAR-mediated miniature excitatory postsynaptic current (mEPSC) amplitude and surface expression of GluR1 and GluR2 subunits in hippocampal neurons, increases the surface mobility and synaptic content of AMPAR GluR2 subunits, and enhances L-type calcium currents in CA1 pyramidal neurons. Corticosterone operates through mineralocorticoid receptors and glucocorticoid receptors, both of which belong to the family of nuclear receptors that bind to response elements in the DNA, thus modifying the activity of responsive genes[1].

In vivo Corticosterone plays an important role in regulating neuronal functions of the limbic system. After stress, the level of stress hormones such as corticosterone is markedly increased. Corticosterone exerts a time- and region-specific action on cellular physiology of limbic neurons[1].

Protocol

Cell Research:[1]
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  • Cell lines: HEK293 cells
  • Concentrations: 100 nM
  • Incubation Time: 30 min
  • Method: HEK293 cells are grown in 6-cm dishes in 10% fetal bovine serum DMEM medium. When cells are 90% confluent, the medium is changed to 0.5% fetal bovine serum DMEM to limit serum-induced up-regulation of SGK. For in vitro phosphorylation analysis, the following approach is used. HEK293 cells are transfected with or without SGK1 small interfering RNA. One day after transfection, cells are treated without or with 100 nM corticosterone for 30 min, washed, and maintained in 0.5% fetal bovine serum DMEM for 1.5 h. Then cells are lysed in the CytoBuster protein extraction reagent containing protease inhibitors. Cell lysates are centrifuged at 16,000 × g at 4 °C for 20 min. The supernatants (40 μl, ∼50 μg of total protein) are incubated with 1 μg of purified GST fusion protein of wild-type GDI or its mutants for 30 min at 30 °C in the reaction buffer (30 mM HEPES, pH 7.5, 10 mM MgCl2, 30 μM ATP, 1 μCi of [γ-32P]ATP, 100 nM calyculin, 1 μM okadaic acid). SDS-PAGE is carried out, and phosphorylated GDI is visualized with autoradiography.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 69 mg/mL (199.15 mM)
Ethanol 69 mg/mL warmed (199.15 mM)
Water Insoluble

* 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.

Chemical Information

Molecular Weight 346.46
Formula

C21H30O4
CAS No. 50-22-6
Storage powder
Synonyms 17-deoxycortisol, 11β,21-dihydroxyprogesterone

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID