Figure ITAC-induced concentration-dependent stimulation of intracellular calcium mobilization in CHO-K1/Gα15/CXCR3 cells. The cells were loaded with Calcium-4 prior to being stimulated with agonist ITAC. The intracellular calcium change was normalized and measured by FLIPR. The relative fluorescent units (RFU) were plotted against the log of the cumulative doses of ITAC (Mean ± SD, n = 2). The EC50 of ITAC on this cell was 0.26 µg/ml. P1, P5, P10 and P20 represent the cell passage number.
CHO-K1/Gα15/CXCR3
Chemokine (C-X-C motif) receptor 3 (CXCR3) belongs to the CXC chemokine receptor family. Similar to other chemokine receptors, it is a G protein-coupled receptor (GPCR). CXCR3 has two distinct splice variants, CXCR3A and CXCR3B, demonstrating different binding affinities. CXCR3-A binds to the CXC chemokines CXCL9 (MIG), CXCL10 (IP-10), and CXCL11 (ITAC) while CXCR3-B can also bind to CXCL4 in addition to CXCL9, CXCL10, and CXCL11. GenScript’s human CXCR3A-expressing stable subline is guaranteed to function properly in calcium flux assay.
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