GS 39783

Positive modulator at GABAB receptors CAS# 39069-52-8

GS 39783

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Chemical structure

GS 39783

3D structure

Chemical Properties of GS 39783

Cas No. 39069-52-8 SDF Download SDF
PubChem ID 6604928 Appearance Powder
Formula C15H23N5O2S M.Wt 337.44
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 5 mM in ethanol and to 10 mM in DMSO
Chemical Name 4-N,6-N-dicyclopentyl-2-methylsulfanyl-5-nitropyrimidine-4,6-diamine
SMILES CSC1=NC(=C(C(=N1)NC2CCCC2)[N+](=O)[O-])NC3CCCC3
Standard InChIKey GSGVDKOCBKBMGG-UHFFFAOYSA-N
Standard InChI InChI=1S/C15H23N5O2S/c1-23-15-18-13(16-10-6-2-3-7-10)12(20(21)22)14(19-15)17-11-8-4-5-9-11/h10-11H,2-9H2,1H3,(H2,16,17,18,19)
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.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of GS 39783

DescriptionPositive allosteric modulator of GABAB receptor function. Potentiates the effects of GABA on [35S]GTPγS binding at recombinant and native GABAB receptors (EC50 values are 2.1 and 3.1μM respectively). Decreases cocaine self-administration, blocks the rewarding properties of nicotine and produces anxiolytic-like activity without the side effects associated with baclofen or benzodiazepines.

GS 39783 Dilution Calculator

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Preparing Stock Solutions of GS 39783

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.9635 mL 14.8174 mL 29.6349 mL 59.2698 mL 74.0872 mL
5 mM 0.5927 mL 2.9635 mL 5.927 mL 11.854 mL 14.8174 mL
10 mM 0.2963 mL 1.4817 mL 2.9635 mL 5.927 mL 7.4087 mL
50 mM 0.0593 mL 0.2963 mL 0.5927 mL 1.1854 mL 1.4817 mL
100 mM 0.0296 mL 0.1482 mL 0.2963 mL 0.5927 mL 0.7409 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on GS 39783

Evaluation of dried blood spot protocols with the Bio-Rad GS HIV Combo Ag/Ab EIA and Geenius HIV 1/2 Supplemental Assay.[Pubmed:28366544]

J Clin Virol. 2017 Jun;91:84-89.

OBJECTIVE: FDA-approved antigen/antibody combo and HIV-1/2 differentiation supplemental tests do not have claims for dried blood spot (DBS) use. We compared two DBS-modified protocols, the Bio-Rad GS HIV Combo Ag/Ab (BRC) EIA and Geenius HIV-1/2 (Geenius) Supplemental Assay, to plasma protocols and evaluated them in the CDC/APHL HIV diagnostic algorithm. METHODS: BRC-DBS p24 analytical sensitivity was calculated from serial dilutions of p24. DBS specimens included 11 HIV-1 seroconverters, 151 HIV-1-positive individuals, including 20 on antiretroviral therapy, 31 HIV-2-positive and one HIV-1/HIV-2-positive individuals. BRC-reactive specimens were tested with Geenius using the same DBS eluate. Matched plasma specimens were tested with BRC, an IgG/IgM immunoassay and Geenius. DBS and plasma results were compared using the McNemar's test. A DBS-algorithm applied to 348 DBS from high-risk individuals who participated in surveillance was compared to HIV status based on local testing algorithms. RESULTS: BRC-DBS detects p24 at a concentration 18 times higher than in plasma. In seroconverters, BRC-DBS detected more infections than the IgG/IgM immunoassay in plasma (p=0.0133), but fewer infections than BRC-plasma (p=0.0133). In addition, the BRC/Geenius-plasma algorithm identified more HIV-1 infections than the BRC/Geenius-DBS algorithm (p=0.0455). The DBS protocols correctly identified HIV status for established HIV-1 infections, including those on therapy, HIV-2 infections, and surveillance specimens. CONCLUSIONS: The DBS protocols exhibited promising performance and allowed rapid supplemental testing. Although the DBS algorithm missed some early infections, it showed similar results when applied to specimens from a high-risk population. Implementation of a DBS algorithm would benefit testing programs without capacity for venipuncture.

Evaluation of HMW-GS 20 and 2.2 from near isogenic lines of wheat variety HD2329 for bread quality improvement.[Pubmed:28332204]

J Sci Food Agric. 2017 Oct;97(13):4526-4531.

BACKGROUND: Hexaploid wheat (Triticum aestivum L.) dominates the list of the most important human food sources ever. Its complex genetic background is the reason behind the wide diversity that exists in nutritional as well as food end-product quality. High-molecular-weight glutenin sub-units (HMW-GS) are the main grain storage proteins in the endosperm of wheat and related species. It is well established that the composition and quantity of allelic variation in HMW-GS genes substantially affect the taste and appearance of dough products and therefore work in this area is highly desired. RESULTS: A significant positive effect on wheat dough quality traits was observed among near isogenic lines of HMW-GS sub-units 20 and 2.2 in wheat variety HD2329 during quality evaluation of data generated over 2 years. A remarkably significant (P < 0.01) effect was observed on dough quality parameters like ratio of wet gluten/dry gluten, SDS sedimentation, farinogram parameters, and bread/chapatti traits whereas flour protein and dry gluten content showed an insignificant effect. CONCLUSION: HMW-GS 20 was found to be superior to HMW-GS 2.2 in terms of dough quality and both the near isogenic lines developed by us were found to be highly superior to the recurrent parent HD2329. As we know that the improvement of flour quality based on superior HMW-GS alleles is necessary to meet changing consumer demand, the study can be of immense use to future researchers who can target these HMW sub-units 20 and 2.2 in breeding programmes for the improvement of wheat end-product quality. (c) 2017 Society of Chemical Industry.

Simultaneous Decolorization and Biohydrogen Production from Xylose by Klebsiella oxytoca GS-4-08 in the Presence of Azo Dyes with Sulfonate and Carboxyl Groups.[Pubmed:28283518]

Appl Environ Microbiol. 2017 May 1;83(10). pii: AEM.00508-17.

Biohydrogen production from the pulp and paper effluent containing rich lignocellulosic material could be achieved by the fermentation process. Xylose, an important hemicellulose hydrolysis product, is used less efficiently as a substrate for biohydrogen production. Moreover, azo dyes are usually added to fabricate anticounterfeiting paper, which further increases the complexity of wastewater. This study reports that xylose could serve as the sole carbon source for a pure culture of Klebsiella oxytoca GS-4-08 to achieve simultaneous decolorization and biohydrogen production. With 2 g liter(-1) of xylose as the substrate, a maximum xylose utilization rate (URxyl) and a hydrogen molar yield (HMY) of 93.99% and 0.259 mol of H2 mol of xylose(-1), respectively, were obtained. Biohydrogen kinetics and electron equivalent (e(-) equiv) balance calculations indicated that methyl red (MR) penetrates and intracellularly inhibits both the pentose phosphate pathway and pyruvate fermentation pathway, while methyl orange (MO) acted independently of the glycolysis and biohydrogen pathway. The data demonstrate that biohydrogen pathways in the presence of azo dyes with sulfonate and carboxyl groups were different, but the azo dyes could be completely reduced during the biohydrogen production period in the presence of MO or MR. The feasibility of hydrogen production from industrial pulp and paper effluent by the strain if the xylose is sufficient was also proved and was not affected by toxic substances which usually exist in such wastewater, except for chlorophenol. This study offers a promising energy-recycling strategy for treating pulp and paper wastewaters, especially for those containing azo dyes.IMPORTANCE The pulp and paper industry is a major industry in many developing countries, and the global market of pulp and paper wastewater treatment is expected to increase by 60% between 2012 and 2020. Such wastewater contains large amounts of refractory contaminants, such as lignin, whose reclamation is considered economically crucial and environmentally friendly. Furthermore, azo dyes are usually added in order to fabricate anticounterfeiting paper, which further increases the complexity of the pulp and paper wastewater. This work may offer a better understanding of biohydrogen production from xylose in the presence of azo dyes and provide a promising energy-recycling method for treating pulp and paper wastewater, especially for those containing azo dyes.

GABAB receptor-positive modulation-induced blockade of the rewarding properties of nicotine is associated with a reduction in nucleus accumbens DeltaFosB accumulation.[Pubmed:17215447]

J Pharmacol Exp Ther. 2007 Apr;321(1):172-7.

There is an increasing demand for a novel non-nicotinic, nondopaminergic therapeutic approach to nicotine addiction. GABAergic mechanisms have been implicated in drug dependence. Recently, a novel GABAB receptor allosteric-positive modulator, GS39783, was characterized. There are no investigations to date on the effects of GABAB receptor-positive modulators in animal models of nicotine reinforcement. Conditioned place preference (CPP) paradigms are based on the principle that animals, like humans, would learn to seek environmental stimuli that have been previously associated with rewarding events. Here we show that nicotine (0.06 mg/kg s.c.) induced a robust CPP response. Furthermore, GS39783 (30-100 mg/kg p.o.) during the conditioning phase blocked the rewarding effects of nicotine in the CPP paradigm in rats. However, GS39783 did not significantly alter the CPP effects of nicotine when given only immediately before the CPP test. A growing body of evidence suggests that repeated administration of drugs of abuse induced long-term molecular changes in brain plasticity, most notably an accumulation of DeltaFosB, in the striatal complex that contribute to the manifestation of dependence. There was a significant accumulation of DeltaFosB in the nucleus accumbens, but not in the dorsal striatum, of rats treated daily for 5 days with nicotine (0.06 mg/kg i.p.). GS39783 completely (30-100 mg/kg p.o.) counteracted these nicotine-induced molecular adaptations when given before the CPP acquisition phase but not when administered immediately before the test phase. Taken together, the behavioral and molecular changes induced by nicotine occur in concert and are concomitantly amenable to reversal by GABAB receptor-positive modulators.

Behavioral characterization of the novel GABAB receptor-positive modulator GS39783 (N,N'-dicyclopentyl-2-methylsulfanyl-5-nitro-pyrimidine-4,6-diamine): anxiolytic-like activity without side effects associated with baclofen or benzodiazepines.[Pubmed:15113848]

J Pharmacol Exp Ther. 2004 Sep;310(3):952-63.

The role of GABAB receptors in various behavioral processes has been largely defined using the prototypical GABAB receptor agonist baclofen. However, baclofen induces sedation, hypothermia and muscle relaxation, which may interfere with its use in behavioral paradigms. Although there is much evidence for a role of the inhibitory neurotransmitter GABA in the pathophysiology of anxiety, the role of GABAB receptors in these disorders is largely unclear. We recently identified GS39783 (N,N'-dicyclopentyl-2-methylsulfanyl-5-nitro-pyrimidine-4,6-diamine) as a selective allosteric positive modulator at GABAB receptors. The aim of the present study was to broadly characterize the effects of GS39783 in well-validated rodent models for motor activity, cognition, and anxiety. The following tests were included: locomotor activity in rats and mice, rotarod and traction tests (including determinations of core temperature) in mice, passive avoidance in mice and rats, elevated plus maze in rats, elevated zero maze in mice and rats, stress-induced hyperthermia in mice, and pentobarbital- and ethanol-induced sleep in mice. Unlike baclofen and/or the benzodiazepine chlordiazepoxide, GS39783 had no effect in any of the tests for locomotion, cognition, temperature, or narcosis. Most interestingly, GS39783 had anxiolytic-like effects in all the tests used. Overall, the data obtained here suggest that positive modulation of GABAB receptors may serve as a novel therapeutic strategy for the development of anxiolytics, with a superior side effect profile to both baclofen and benzodiazepines.

N,N'-Dicyclopentyl-2-methylsulfanyl-5-nitro-pyrimidine-4,6-diamine (GS39783) and structurally related compounds: novel allosteric enhancers of gamma-aminobutyric acidB receptor function.[Pubmed:12954816]

J Pharmacol Exp Ther. 2003 Oct;307(1):322-30.

N,N'-Dicyclopentyl-2-methylsulfanyl-5-nitro-pyrimidine-4,6-diamine (GS39783) and structurally related compounds are described as novel allosteric enhancers of GABA(B) receptor function. They potentiate GABA-stimulated guanosine 5'-O-(3-[35S]thio)triphosphate ([35S]GTPgammaS) binding to membranes from a GABA(B)(1b/2)-expressing Chinese hamster ovary cell line at low micromolar concentrations, but do not stimulate [35S]GTPgammaS binding by themselves. Similar effects of GS39783 are seen on native GABA(B) receptors in rat brain membranes. Concentration-response curves with GABA in the presence of different fixed concentrations of GS39783 reveal an increase of both the potency and maximal efficacy of GABA at the GABA(B)(1b/2) heterodimer. In radioligand binding experiments, GS39783 reduces the kinetic rate constants of the association and dissociation of [3H]3-aminopropylphosphinic acid, resulting in a net increase in affinity for the agonist radioligand. In equilibrium binding experiments (displacement of the antagonist ligand [3H]CGP62349), GS39783 increases agonist affinities. Agonist displacement curves are biphasic, probably reflecting the G protein-coupled and uncoupled states of the receptor. The proportion of the high-affinity component is increased by GS39783, suggesting that the G protein coupling of the receptor is also promoted by the positive modulator. We also show that GS39783 has modulatory effects in cellular assays such as GABA(B) receptor-mediated activation of inwardly rectifying potassium channels in Xenopus oocytes and Ca2+ signaling in human embryonic kidney 293 cells. In a more physiological context, GS39783 is shown to suppress paired pulse inhibition in rat hippocampal slices. This effect is reversed by the competitive GABA(B) receptor antagonist CGP55845A and is produced most likely by enhancing the effect of synaptically released GABA at presynaptic GABA(B) receptors.

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