182498-32-4

CXCR2 (IL-8RB) is a seven-transmembrane G protein-coupled receptor whose physiological ligands include IL-8 (CXCL8) and growth related oncogene α (Gro-α; CXCL1). IL-8 and Gro-α are pro-inflammatory CXC chemokines that act as chemoattractants, especially for neutrophils, and promote angiogenesis. SB 225002 is a selective non-peptide inhibitor of CXCR2, inhibiting IL-8 binding to CXCR2 with an IC₅₀ value of 22 nM. SB225002 inhibits neutrophil chemotaxis in response to IL-8 in vitro (IC₅₀ = 20 nM) and blocks neutrophil margination induced by IL-8 in vivo (IC₅₀ = 30 nM). Similarly, SB 225002 reduces neutrophil influx, the production of inflammatory mediators, and tissue damage in TNBS-induced colitis in mice.

Potent and selective antagonist of CXCR2 chemokine receptor (IC50=22nM). >150-fold more selective over CXCR1 receptor. Inhibits IL-8- (IC50=8nM) and GROα-mediated (IC50=10nM) calcium mobilisation. Prevents IL-8-induced neutrophil migration. Inhibits HIV replication in lymphocytes and macrophages.

ChEBI: 1-(2-bromophenyl)-3-(2-hydroxy-4-nitrophenyl)urea is a nitrophenol.

Potent and selective CXCR2 chemokine receptor antagonist (IC 50 = 22 nM) that displays > 150-fold selectivity over CXCR1 receptors. Causes inhibition of IL-8 and GRO α -mediated calcium mobilization in HL60 cells (IC 50 values are 8 and 10 nM respectively). Prevents IL-8-induced neutrophil chemotaxis in vitro and sequestration in vivo . Inhibits HIV replication in lymphocytes and macrophages.

SB-225002 is a potent nonpeptide inhibitor of chemokine receptor CXCR2 with an IC50 of 22 nM for inhibiting interleukin IL-8 binding to CXCR2 and > 150-fold selectivity over CXCR1 receptors. CXCR2 binds many different immune cell chemoattractants. SB-225002 is crucial for cancer progression and is involved in inflammatory diseases like COPD, rheumatoid arthritis, and ulcerative colitis.

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1) White et al. (1998), Identification of a potent, selective non-peptide CXCR2 antagonist that inhibits interleukin-8-induced neutrophil migration; J. Biol. Chem. 273 10095 2) Du et al. (2013) SB225002 Promotes Mitotic Catastrophe in Chemo-Sensitive and -Resistant Ovarian Cancer Cells Independent of p53 Status In Vitro; PLoS One. 8 e54572 3) Shen et al. (2013), Interleukin-8 prevents oxidative stress-induced human endothelial cell senescence via telomerase activation; Int. Immunopharmacol. 16 261 4) Lane et al. (2001), Interleukin-8 Stimulates Human Immunodeficiency Virus Type 1 Replication and Is a Potential New target for Antiretroviral Therapy; J. Virol. 75 8195 5) Wu et al. (2015), CXCR2 is essential for cerebral endothelial activation and leukocyte recruitment during neuroinflammation; J. Neuroinflammation 12 98