RS 504393

CCR2 chemokine receptor antagonist CAS# 300816-15-3

RS 504393

Catalog No. BCC1910----Order now to get a substantial discount!

Product Name & Size Price Stock
RS 504393:10mg $148.00 In stock
RS 504393:20mg $252.00 In stock
RS 504393:50mg $592.00 In stock
RS 504393:100mg $1036.00 In stock
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Chemical structure

RS 504393

3D structure

Chemical Properties of RS 504393

Cas No. 300816-15-3 SDF Download SDF
PubChem ID 9953769 Appearance Powder
Formula C25H27N3O3 M.Wt 417.5
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : 12.5 mg/mL (29.94 mM; Need ultrasonic)
H2O : < 0.1 mg/mL (insoluble)
Chemical Name 6-methyl-1'-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethyl]spiro[1H-3,1-benzoxazine-4,4'-piperidine]-2-one
SMILES CC1=CC2=C(C=C1)NC(=O)OC23CCN(CC3)CCC4=C(OC(=N4)C5=CC=CC=C5)C
Standard InChIKey ODNICNWASXKNNQ-UHFFFAOYSA-N
Standard InChI InChI=1S/C25H27N3O3/c1-17-8-9-22-20(16-17)25(31-24(29)27-22)11-14-28(15-12-25)13-10-21-18(2)30-23(26-21)19-6-4-3-5-7-19/h3-9,16H,10-15H2,1-2H3,(H,27,29)
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 RS 504393

DescriptionExtremely selective CCR2 chemokine receptor antagonist (IC50 values are 98 nM and > 100 μM for inhibition of human recombinant CCR2b and CCR1 receptors respectively). Inhibits MCP-1 chemotaxis (IC50 = 330 nM) and ischemia-reperfusion injury in kidneys.

Protocol

Kinase Assay [4]
Isolated mast cells are sensitized by incubation with anti-DNP IgE in RPMI1640 containing 10 ng/mL of murine recombinant IL-3, 10 ng/mL of recombinant SCF, and 5% murine serum. The cells are then washed with HBSS containing 10 ng/mL of murine recombinant IL-3, 10 ng/mL of recombinant SCF, 0.04% BSA, and 10 mM HEPES. Resuspended cells at a concentration of 2 to 8×104 cells/100 μL are transferred into triplicate wells of a 96 well U-bottom plate and allowed to equilibrate at 37°C for 10 minutes before the addition of DNP-albumin or compound 48/80. After 45 minutes, the plate is centrifuged at 290 g for 5 minutes at 4°C. The β-hexosaminidase activity of the culture supernatant is determined using a Published protocol. Fifty-μL aliquots of the supernatant are placed in wells of another 96-well plate together with 100 μL of 2.5 mM p-nitrophenyl-N-acetyl β-d glucosaminide solubilized in 0.04mol/Lcitrate buffer adjusted to pH 4.5 with disodium phosphate. After incubation at 37°C for 90 minutes, the reactions are terminated by addition of 50 μL of 0.4mol/Lglycin adjusted to pH 10.7 with sodium hydroxide. The colored product is measured at 405 nm with a reference filter of 570 nm. The relative release of β-hexosaminidase is defined as the activity in the supernatant of the tested cells divided by the activity in the positive control cell supernatant, multiplied by 100. Compound 48/80 stimulus is used for assay control.

Animal Administration [2]
Male C57BL/6J mice (n=30) and male homozygote CCR1, CCR2 and CCR3 knockout mice (n=12, in each phenotype), 6-8 weeks old and weighing 20±2 g, are anesthetized with a mixture of ketamine (80 mg/kg) and xylazine (30 mg/kg) given intraperitoneally. Intranasal administration of PBS or LPS (5 mg/kg) is performed in a volume of 1 mL/kg body weight. C57BL/6J mice are treated with vehicle or RS504393 (5 mg/kg) intraperitoneally 30 min before LPS challenge. Four hours after LPS challenge, mice are terminated by an intraperitoneal injection of an overdose of pentobarbitone. The mice are kept on a 12-h light/dark cycle with access to mice chow and water ad libitum.

References:
[1]. Baamonde, Ana., et al. Involvement of glutamate NMDA and AMPA receptors, glial cells and IL-1β in the spinal hyperalgesia evoked by the chemokine CCL2 in mice. Neuroscience Letters (2011), 502(3), 178-181. [2]. Yang, Dong., et al. Roles of CC chemokine receptors (CCRs) on lipopolysaccharide-induced acute lung injury. Respiratory Physiology & Neurobiology (2010), 170(3), 253-259. [3]. Kitagawa, Kiyoki., et al. Blockade of CCR2 ameliorates progressive fibrosis in kidney. American Journal of Pathology (2004), 165(1), 237-246. [4]. Tominaga T, et al. Blocking mast cell-mediated type I hypersensitivity in experimental allergic conjunctivitis by monocyte chemoattractant protein-1/CCR2. Invest Ophthalmol Vis Sci. 2009 Nov;50(11):5181-8.

RS 504393 Dilution Calculator

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RS 504393 Molarity Calculator

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Preparing Stock Solutions of RS 504393

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.3952 mL 11.976 mL 23.9521 mL 47.9042 mL 59.8802 mL
5 mM 0.479 mL 2.3952 mL 4.7904 mL 9.5808 mL 11.976 mL
10 mM 0.2395 mL 1.1976 mL 2.3952 mL 4.7904 mL 5.988 mL
50 mM 0.0479 mL 0.2395 mL 0.479 mL 0.9581 mL 1.1976 mL
100 mM 0.024 mL 0.1198 mL 0.2395 mL 0.479 mL 0.5988 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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Background on RS 504393

RS 504393 is a selective CCR2 chemokine receptor antagonist (IC50 values are 98 nM and > 100 μM for inhibition of human recombinant CCR2b and CCR1 receptors respectively). RS 504393 inhibits MCP-1 chemotaxis (IC50 = 330 nM) and ischemia-reperfusion injury in kidneys.

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References on RS 504393

Conservation and the 4 Rs, which are rescue, rehabilitation, release, and research.[Pubmed:28328146]

Conserv Biol. 2018 Feb;32(1):50-59.

Vertebrate animals can be injured or threatened with injury through human activities, thus warranting their "rescue." Details of wildlife rescue, rehabilitation, release, and associated research (our 4 Rs) are often recorded in large databases, resulting in a wealth of available information. This information has huge research potential and can contribute to understanding of animal biology, anthropogenic impacts on wildlife, and species conservation. However, such databases have been little used, few studies have evaluated factors influencing success of rehabilitation and/or release, recommended actions to conserve threatened species have rarely arisen, and direct benefits for species conservation are yet to be demonstrated. We therefore recommend that additional research be based on data from rescue, rehabilitation, and release of animals that is broader in scope than previous research and would have community support.

Use of Humanized RS-ATL8 Reporter System for Detection of Allergen-Specific IgE Sensitization in Human Food Allergy.[Pubmed:28315218]

Methods Mol Biol. 2017;1592:147-161.

Allergen-specific Immunoglobulin E (IgE) determination lies at the heart of diagnosis of sensitization to food and other allergens. In the past few years, reporter systems capable of detecting the presence of allergen-specific IgE have been developed by several labs. These rely on humanized rat basophil leukemia cell lines stably transfected with reporter genes such as firefly luciferase. In this chapter, we describe protocols for the use of the RS-ATL8 cell line (IgE cross-linking-induced luciferase expression; EXiLE) in 96-well and 384-well formats. We also describe optional treatment steps for enveloped virus and complement inactivation.

How to Engage Funders and Get Money: the 10 Rs You Need to Know.[Pubmed:28333747]

Am J Nurs. 2017 Apr;117(4):63-65.

Tips from a foundation insider for researchers and nurse leaders.

Blockade of CCR2 ameliorates progressive fibrosis in kidney.[Pubmed:15215179]

Am J Pathol. 2004 Jul;165(1):237-46.

Fibrosis is a hallmark of progressive organ diseases. Monocyte chemoattractant protein (MCP)-1, also termed as macrophage chemotactic and activating factor (MCAF/CCL2) and its receptor, CCR2 are presumed to contribute to progressive fibrosis. However, the therapeutic efficacy of MCP-1/CCR2 blockade in progressive fibrosis remains to be investigated. We hypothesized that blockade of CCR2 may lead to the improvement of fibrosis. To achieve this goal, we investigated renal interstitial fibrosis induced by a unilateral ureteral obstruction in CCR2 gene-targeted mice and mice treated with propagermanium or RS-504393, CCR2 inhibitors. Cell infiltrations, most of which were F4/80-positive, were reduced in CCR2 knockout mice. In addition, dual staining revealed that CCR2-positive cells were mainly F4/80-positive macrophages. Importantly, CCR2 blockade reduced renal interstitial fibrosis relative to wild-type mice. Concomitantly, renal transcripts and protein of MCP-1, transforming growth factor-beta, and type I collagen were decreased in CCR2-null mice. Further, this CCR2-dependent loop for renal fibrosis was confirmed by treatment with CCR2 antagonists in a unilateral ureteral obstruction model. These findings suggest that the therapeutic strategy of blocking CCR2 may prove beneficial for progressive fibrosis via the decrease in infiltration and activation of macrophages in the diseased kidneys.

CCR2 signaling contributes to ischemia-reperfusion injury in kidney.[Pubmed:14514728]

J Am Soc Nephrol. 2003 Oct;14(10):2503-15.

Examined were CCR2-deficient mice to clarify the contribution of macrophages via monocyte chemoattractant protein 1 (MCP-1 or CCL2)/CCR2 signaling to the pathogenesis of renal ischemia-reperfusion injury. Also evaluated was the therapeutic effects via the inhibition of MCP-1/CCR2 signaling with propagermanium (3-oxygermylpropionic acid polymer) and RS-504393. Renal artery and vein of the left kidney were occluded with a vascular clamp for 60 min. A large number of infiltrated cells and marked acute tubular necrosis in outer medulla after renal ischemia-reperfusion injury was observed. Ischemia-reperfusion induced the expression of MCP-1 mRNA and protein in injured kidneys, followed by CCR2-positive macrophages in interstitium in wild-type mice. The expression of MCP-1 was decreased in CCR2-deficient mice compared with wild-type mice. The number of interstitial infiltrated macrophages was markedly smaller in the CCR2-deficient mice after ischemia-reperfusion. CCR2-deficient mice decreased the number of interstitial inducible nitric oxide synthase-positive cells after ischemia-reperfusion. The area of tubular necrosis in CCR2-deficient mice was significantly lower than that of wild-type mice after ischemia-reperfusion. In addition, CCR2-deficient mice diminished KC, macrophage inflammatory protein 2, epithelial cell-derived neutrophil-activating peptide 78, and neutrophil-activating peptide 2 expression compared with wild-type mice accompanied with the reduction of interstitial granulocyte infiltration. Similarly, propagermanium and RS-504393 reduced the number of interstitial infiltrated cells and tubular necrosis up to 96 h after ischemia-reperfusion injury. These results revealed that MCP-1 via CCR2 signaling plays a key role in the pathogenesis of renal ischemia-reperfusion injury through infiltration and activation of macrophages, and it offers a therapeutic target for ischemia-reperfusion.

Identification of the binding site for a novel class of CCR2b chemokine receptor antagonists: binding to a common chemokine receptor motif within the helical bundle.[Pubmed:10770925]

J Biol Chem. 2000 Aug 18;275(33):25562-71.

Monocyte chemoattracant-1 (MCP-1) stimulates leukocyte chemotaxis to inflammatory sites, such as rheumatoid arthritis, atherosclerosis, and asthma, by use of the MCP-1 receptor, CCR2, a member of the G-protein-coupled seven-transmembrane receptor superfamily. These studies identified a family of antagonists, spiropiperidines. One of the more potent compounds blocks MCP-1 binding to CCR2 with a K(d) of 60 nm, but it is unable to block binding to CXCR1, CCR1, or CCR3. These compounds were effective inhibitors of chemotaxis toward MCP-1 but were very poor inhibitors of CCR1-mediated chemotaxis. The compounds are effective blockers of MCP-1-driven inhibition of adenylate cyclase and MCP-1- and MCP-3-driven cytosolic calcium influx; the compounds are not agonists for these pathways. We showed that glutamate 291 (Glu(291)) of CCR2 is a critical residue for high affinity binding and that this residue contributes little to MCP-1 binding to CCR2. The basic nitrogen present in the spiropiperidine compounds may be the interaction partner for Glu(291), because the basicity of this nitrogen was essential for affinity; furthermore, a different class of antagonists, a class that does not have a basic nitrogen (2-carboxypyrroles), were not affected by mutations of Glu(291). In addition to the CCR2 receptor, spiropiperidine compounds have affinity for several biogenic amine receptors. Receptor models indicate that the acidic residue, Glu(291), from transmembrane-7 of CCR2 is in a position similar to the acidic residue contributed from transmembrane-3 of biogenic amine receptors, which may account for the shared affinity of spiropiperidines for these two receptor classes. The models suggest that the acid-base pair, Glu(291) to piperidine nitrogen, anchors the spiropiperidine compound within the transmembrane ovoid bundle. This binding site may overlap with the space required by MCP-1 during binding and signaling; thus the small molecule ligands act as antagonists. An acidic residue in transmembrane region 7 is found in most chemokine receptors and is rare in other serpentine receptors. The model of the binding site may suggest ways to make new small molecule chemokine receptor antagonists, and it may rationalize the design of more potent and selective antagonists.

Description

RS 504393 is a selective CCR2 chemokine receptor antagonist (IC50 values are 89 nM and > 100 μM for inhibition of human recombinant CCR2 and CCR1 receptors respectively).

Keywords:

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