BX430

Research use only, not for human use.

BX430 is used for chronic pain and cardiovascular disease and it is a potent and selective noncompetitive allosteric human P2X4 receptor channels antagonist with an IC50 of 0.54 μM. BX430 has species specificity.

BX430 is used for chronic pain and cardiovascular disease and it is a potent and selective noncompetitive allosteric human P2X4 receptor channels antagonist with an IC50 of 0.54 μM. BX430 has species specificity.BX430, with submicromolar potency (IC50 = 0.54 M). BX430 is highly selective, having virtually no functional impact on all other P2X subtypes, namely, P2X1-P2X3, P2X5, and P2X7, at 10-100 times its IC50.?Unexpected species differences were noticed, as BX430 is a potent antagonist of zebrafish P2X4 but has no effect on rat and mouse P2X4 orthologs.?The concentration-response curve for ATP on human P2X4 in the presence of BX430 shows an insurmountable blockade, indicating a noncompetitive allosteric mechanism of action.?Using a fluorescent dye uptake assay, we observed that BX430 also effectively suppresses ATP-evoked and ivermectin-potentiated membrane permeabilization induced by P2X4 pore dilation.?Finally, in single-cell calcium imaging, we validated its selective inhibitory effects on native P2X4 channels at the surface of human THP-1 cells that were differentiated into macrophages.?In summary, this ligand provides a novel molecular probe to assess the specific role of P2X4 in inflammatory and neuropathic conditions, where ATP signaling has been shown to be dysfunctional.

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Neuroscience

P2 Receptor

human P2X4 receptor channels

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688309-70-8

413.11

C15H15Br2N3O

>98% (HPLC)

In Vitro:?DMSO : 83.33 mg/mL (201.71 mM)

CC(C)c1cc(Br)c(NC(=O)Nc2cccnc2)c(Br)c1

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(-20℃)

With Ice Pack

≥ 2 years