In Vivo (Add solvents to the product individually and in order.)
Homogeneous suspension
CMC-NA
≥5mg/ml
Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
* <1 mg/ml means slightly soluble or 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. * Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)
Preparing Stock Solutions
Biological Activity
Description
GSK583 is a highly potent and selective inhibitor of RIP2 kinase with IC50 of 5 nM. This compound also inhibits both TNF-α and IL-6 production with IC50 of ~200 nM in explant cultures.
Targets
RIP2 (Cell-free assay)
RIP3 (Cell-free assay)
5 nM
16 nM
In vitro
GSK583 possesses comparable binding affinity for RIP3 kinase as demonstrated by an in-house FP binding assay configured similarly to the RIP2 FP assay (RIP2 FP IC50 = 5 nM; RIP3 FP IC50 = 16 nM). Despite this potent biochemical activity against RIP3 kinase, this compound shows little or no inhibition of RIP3-dependent necroptotic cell death in a cellular assay up to 10 μM concentration. It potently and dose dependently inhibits MDP-stimulated tumor necrosis factor-alpha (TNFα) production with an IC50 = 8 nM in primary human monocytes. Following treatment with this chemical at 1 μM, little inhibition of pro-inflammatory signaling is observed upon activation of Toll-like receptors (TLR2, TLR4, TLR7) or cytokine receptors (IL-1R, TNFR) but complete inhibition is observed upon activation of both NOD1 and NOD2 receptors, which signal in a RIP2-dependent manner. Although it has excellent kinase selectivity, this compound does inhibit both the hERG channel and Cyp3A4, which precludes it from further progression as a drug candidate.
In Vivo
GSK583 has low clearance, moderate volumes of distribution, and moderate oral bioavailability in both rat and mouse. Eventhough this compound would not produce a human phamacodynamic response within an acceptable dose range which precludes this molecule from further development as a drug candidate, the oral PK in rat and mouse provides sufficient systemic exposure for use as a preclinical in vivo tool molecule in an acute inflammation challenge model.
To assess cellular selectivity, monocytes are pretreated with this compound for 30 min, then stimulated for 6 h with ligands which selectively agonize NLRs NOD1, NOD2; Toll-like receptors TLR, TLR4, TLR7, or cytokine receptors IL-1R, TNFR. Release of pro-inflammatory cytokines, either TNFα (NOD2, TLR2, TLR4, IL1R) or IL-8 (NOD1, TLR7, TNFR), is measured by immunoassay. Percent inhibition and/or IC50 values are calculated.
NOD1/RIP2 signalling enhances the microglia-driven inflammatory response and undergoes crosstalk with inflammatory cytokines to exacerbate brain damage following intracerebral haemorrhage in mice
[ J Neuroinflammation, 2020, 17(1):364]
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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.
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