CXCR Antagonist

Plerixafor (AMD 3100) is a selective CXCR4 antagonist with an IC₅₀ of 44 nM. Plerixafor, an immunostimulant and a hematopoietic stem cell (HSC) mobilizer, is an allosteric agonist of CXCR7. Plerixafor inhibits HIV-1 and HIV-2 replication with an EC₅₀ of 1-10 nM.

SB225002, a potent, selective and non-peptide CXCR2 antagonist, inhibits ¹²⁵I-IL-8 binding to CXCR2 with an IC₅₀ of 22 nM.

Plerixafor octahydrochloride (AMD3100 octahydrochloride) is a selective CXCR4 antagonist with an IC₅₀ of 44 nM.

Navarixin (SCH 527123) is a potent, allosteric and orally active antagonist of both CXCR1 and CXCR2, with K_d values of 41 nM for cynomolgus CXCR1 and 0.20 nM, 0.20 nM, 0.08 nM for mouse, rat and cynomolgus monkey CXCR2, respectivelly.

AZD-5069 is a potent CXCR2 chemokine receptor antagonist, used for caner treatment.

TAK-779 is a potent and selective nonpeptide antagonist of CCR5 and CXCR3, with a K_i of 1.1 nM for CCR5, and effectively and selectively inhibits R5 HIV-1, with EC₅₀ and EC₉₀ of 1.2 nM and 5.7 nM, respectively, in MAGI-CCR5 cells.

Motixafortide (BKT140 4-fluorobenzoyl) is a novel CXCR4 antagonist with an IC₅₀ vakue of ～1 nM.

ML339 is a selective CXCR6 antagonist with an IC₅₀ of 140 nM. ML339 antagonizes β-arrestin recruitment and cAMP signaling pathway of human CXCR6 receptor induced by CXCL16, with IC₅₀ of 0.3 μM and 1.4 μM, respectively. ML339 shows weaker activity against the recruitment of β-arrestin in mouse CXCR6 receptors, with an IC₅₀ of 18 μM. ML339 has no inhibitory effect on CXCR5，CXCR4，CXCR6 and apelin receptor (APJ), with IC₅₀ >79 μM. ML339 has the potential to promote the development of prostate cancer research.

ACT-1004-1239 is a potent, selective, orally active CXCR7 antagonist with an IC₅₀ value of 3.2 nM.

Mavorixafor trihydrochloride (AMD-070 trihydrochloride) is a potent, selective and orally available CXCR4 antagonist, with an IC₅₀ value of 13 nM against CXCR4 ¹²⁵I-SDF binding, and also inhibits the replication of T-tropic HIV-1 (NL4.3 strain) in MT-4 cells and PBMCs with an IC₅₀ of 1 and 9 nM, respectively.Mavorixafor trihydrochloride can be used for the study of WHIM syndrome.

SB-265610 is a selective, competitive, nonpeptide and allosteric CXCR2 antagonist. SB-265610 blocks rat cytokine-induced neutrophil chemoattractant-1 (CINC-1)-induced calcium mobilization and neutrophil chemotaxis with IC₅₀s of 3.7 nM and 70 nM, respectively.

SCH 546738 is a potent, orally active and non-competitive CXCR3 antagonist, the affinity constant (K_i) of SCH 546738 binding to human CXCR3 receptor is determined to be 0.4 nM in multiple experiments.

IT1t dihydrochloride is a potent CXCR4 antagonist; inhibits CXCL12/CXCR4 interaction with an IC₅₀ of 2.1 nM.

Ulocuplumab (Anti-Human CXCR4 Recombinant Antibody/BMS-936564/MDX1338) is a fully human IgG4 anti-CXCR4 antibody. Ulocuplumab induces apoptosis and inhibits CXCL12 mediated CXCR4 activation-migration of chronic lymphocytic leukemia (CLL). Ulocuplumab exhibits antitumor activity in established tumors including acute myeloid leukemia (AML), non-Hodgkin lymphoma (NHL), and multiple myeloma xenograft models.

Cosalane (NSC 658586) is a CCR7 (IC₅₀ = 2.43 μM) and CXCR2 antagonist (IC₅₀ = 0.66 μM). Cosalane is an inhibitor of HIV replication with a wide range of activity against HIV-1 isolates, HIV-2, Rauscher murine leukemia virus, HSV-1, HSV-2 and human cytomegalovirus. Cosalane inhibits both attachment of gp120 to CD4. Cosalane inhibits human and murine CCR7 in response to both CCL19 and CCL21 agonists. Cosalane can be studied in research for HIV or attenuating acute graft-versus-host disease (aGVHD) in allogeneic hematopoietic stem cell transplantation (HSCT).

CXCR7 antagonist-1 is a CXCR7 antagonist that inhibits the binding of the SDF-1 chemokine (also known as the CXCL12 chemokine) or I-TAC (also known as CXCL11) to the chemokine receptor CXCR7. CXCR7 antagonist-1 is useful in preventing tumor cell proliferation, tumor formation, inflammatory diseases, and many other diseases.

Mavorixafor (AMD-070) is a potent, selective and orally available CXCR4 antagonist, with an IC₅₀ value of 13 nM against CXCR4 ¹²⁵I-SDF binding, and also inhibits the replication of T-tropic HIV-1 (NL4.3 strain) in MT-4 cells and PBMCs with an IC₅₀ of 1 and 9 nM, respectively. Mavorixafor can be used for the study of WHIM syndrome.

ACT-777991 is an orally active and selective CXCR3 antagonist. ACT-777991 has microsomes and hepatocytes stability across animal models. ACT-777991 inhibits the migration of activated T cells toward CXCL11.

Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor.

Ladarixin (DF 2156A free base) is an orally active, allosteric non-competitive and dual CXCR1 and CXCR2 antagonist. Ladarixin can be used for the research of COPD and asthma.