PF-4136309, also known as INCB8761, is an orally available human chemokine receptor 2 (CCR2) antagonist with potential immunomodulating and antineoplastic activities. Upon oral administration, CCR2 antagonist PF-04136309 specifically binds to CCR2 and prevents binding of the endothelium-derived chemokine ligand CLL2 (monocyte chemoattractant protein-1 or MCP1) to its receptor CCR2, which may result in inhibition of CCR2 activation and signal transduction. This may inhibit inflammatory processes as well as angiogenesis, tumor cell migration, and tumor cell proliferation.
Chemical Formula: C29H31F3N6O3
Exact Mass: 568.24097
Molecular Weight: 568.59
Elemental Analysis: C, 61.26; H, 5.50; F, 10.02; N, 14.78; O, 8.44
Appearance: Solid powder
Purity: >98% (or refer to the Certificate of Analysis)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility: Soluble in DMSO, not in water
Shelf Life: >2 years if stored properly
Drug Formulation: This drug may be formulated in DMSO
Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code: 2934.99.9001
PF-4136309 is potent in human chemotaxis activity (IC50=3.9 nM) and in the whole blood assay (IC50=19 nM), with IC50 of 16 and 2.8 nM in mouse and rat chemotaxis assays. PF-4136309 is potent in inhibiting CCR2 mediated signaling events such as intracellular calcium mobilization and ERK (extracellular signal-regulated kinase) phosphorylation with IC50 values of 3.3 and 0.5 nM, respectively. In hERG patch clamp assay, PF-4136309 inhibits hERG potassium current with an IC50 of 20 μM. PF-4136309 is not a cytochrome P450 (CYP) inhibitor, with IC50 values of >30 μM against five major CYP isozymes CYP1A2, CYP2C9, CYP2C19, CYP2D6, and CYP3A4. Moreover, PF-4136309 is not a CYP inducer at concentrations up to 30 μM.
PF-4136309 (2 mg/kg) exhibits a moderate half-life in both species after iv administration (2.5 and 2.4 h). When administered orally, PF-4136309 (10 mg/kg) is absorbed rapidly, with peak concentration time (Tmax) at 1.2 h for rats and 0.25 h for dogs. A similar half-life is observed in both species between iv dosing and po dosing. PF-4136309 is well absorbed, with an oral bioavailability of 78% in both species.
Xue CB, Wang A, Han Q, Zhang Y, Cao G, Feng H, Huang T, Zheng C, Xia M, Zhang K, Kong L, Glenn J, Anand R, Meloni D, Robinson DJ, Shao L, Storace L, Li M, Hughes RO, Devraj R, Morton PA, Rogier DJ, Covington M, Scherle P, Diamond S, Emm T, Yeleswaram S, Contel N, Vaddi K, Newton R, Hollis G, Metcalf B. Discovery of INCB8761/PF-4136309, a Potent, Selective, and Orally Bioavailable CCR2 Antagonist. ACS Med Chem Lett. 2011 Oct 5;2(12):913-8. doi: 10.1021/ml200199c. eCollection 2011 Dec 8. PubMed PMID: 24900280; PubMed Central PMCID: PMC4018168.
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