WZ811

WZ811 is a small molecule antagonist of CXC chemokine receptor 4 (CXCR4) [1].

WZ811 is synthesized with two aromatic amine moieties. It is found to effectively inhibit TN14003 binding to CXCR4 with EC50 value of 0.3nM at first. And then WZ811 is found to have ability in counteracting SDF-1 function and blocking CXCR4/SDF-1-mediated signaling. In the cAMP assay, WZ811 reduces the effect on cAMP caused by 150ng/ml SDF-1 significantly. It also blocks the SDF-1 induced Matrigel invasion with EC50 value of 5.2nM. Since CXCR4 is involved in the pathogeneses of a wide range of infectious, inflammatory and other diseases, WZ811 is developed for the treatment of various CXCR4-related diseases. It is reported to have weak anti-HIV activity in cell culture [1, 2].

References:
[1] Zhan W, Liang Z, Zhu A, et al. Discovery of small molecule CXCR4 antagonists. Journal of medicinal chemistry, 2007, 50(23): 5655-5664.
[2] Choi W T, Duggineni S, Xu Y, et al. Drug discovery research targeting the CXC chemokine receptor 4 (CXCR4). Journal of medicinal chemistry, 2011, 55(3): 977-994.

Suppression of chronic lymphocytic leukemia progression by CXCR4 inhibitor WZ811.[Pubmed:27725861]

Am J Transl Res. 2016 Sep 15;8(9):3812-3821. eCollection 2016.

CXCR4 is a chemokine and chemokine receptor pair playing critical roles in tumorigenesis. Overexpression of C-X-C chemokine receptor type 4 (CXCR4) is a hallmark of many hematological malignancies including acute myeloid leukemia, chronic lymphocytic leukemia and non-Hodgkin's lymphoma, and generally correlates with a poor prognosis. A highly potent competitive antagonist of CXCR4, WZ811, recently has been identified with suppression of cancer cells aggressive in a variety of cancers. However, the effects of WZ811 on chronic lymphocytic leukemia cells have not yet been defined. The effect of WZ811 on chronic lymphocytic leukemia cells TF-1 and UT-7 cells in proliferation, colony formation, and cell migration in vitro were measured respectively. Decreased in cell viability, colony formation, migration, and survival with cell cycle arrest and higher sensitivity to docetaxel in vitro was observed upon WZ811 treatment. In mouse xenograft models developed with human leukemia cells, WZ811 exhibited tumor growth inhibition. Collectively, we have demonstrated that CXCR4 inhibition by WZ811 has the potential for the treatment of human hematological malignancies. This study demonstrated that WZ811 may be a novel approach in the treatment of chronic lymphocytic leukemia.

Discovery of small molecule CXCR4 antagonists.[Pubmed:17958344]

J Med Chem. 2007 Nov 15;50(23):5655-64.

In light of a proposed molecular mechanism for the C-X-C chemokine receptor type 4 (CXCR4) antagonist 1 (AMD3100), a template with the general structure 2 was designed, and 15 was identified as a lead by means of an affinity binding assay against the ligand-mimicking CXCR4 antagonist 3 (TN14003). Following a structure-activity profile around 15, the design and synthesis of a series of novel small molecular CXCR4 antagonists led to the discovery of 32 (WZ811). The compound shows subnanomolar potency (EC50 = 0.3 nM) in an affinity binding assay. In addition, when subjected to in vitro functional evaluation, 32 efficiently inhibits CXCR4/stromal cell-derived factor-1 (SDF-1)-mediated modulation of cyclic adenosine monophophate (cAMP) levels (EC50 = 1.2 nM) and SDF-1 induced Matrigel invasion (EC50 = 5.2 nM). Molecular field topology analysis (MFTA), a 2D quantitative structure-activity relationship (QSAR) approach based on local molecular properties (Van der Waals radii (VdW), atomic charges, and local lipophilicity), applied to the 32 series suggests structural modifications to improve potency.

WZ811 is an orally active, highly potent competitive antagonist of CXCR4. WZ811 efficiently inhibits CXCR4/SDF-1 (or CXCL12)-mediated modulation of cAMP levels (EC50=1.2 nM) and SDF-1 induced Matrigel invasion in cells (EC50=5.2 nM).

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