| Product Description |
Recombinant CHO-K1 cells stably overexpress human somatostatin receptor 2 (SST2) on the surface and contain high levels of G protein Gαi to couple with the receptor in downstream signaling pathways. |
| Culture Properties |
Adherent |
| Stability |
Stable through more than 16 passages with no significant changes in assay performance or expression profile. |
| Size |
Two vials of frozen cells (>1×106 per vial in 1 mL) |
| Storage |
Store cells in liquid nitrogen immediately upon receipt. Thaw and recover cells within one year from the date received. |
| Culture Medium |
Ham’s F-12K (Kaighn’s), 10% FBS, 200 μg/ml Zeocin (Cat. No. R250-01, Life Technologies), 100 μg/ml Hygromycin B (Cat. No. 10687010, Life Technologies) |
| Complete Growth Medium |
Ham’s F-12K (Kaighn’s), 10% FBS |
| Freeze Medium-DATA |
45% Ham’s F-12K (Kaighn’s) (Cat. No. 21127, Life Technologies), 45% FBS (Cat. No. 10099-141, Life Technologies), 10% DMSO (Cat. No. D2650, Sigma) |
Figure 1. Somatostatin-14-induced concentration-dependent stimulation of intracellular calcium mobilization in CHO-K1/SST2/Gα15 cells. The cells were loaded with Calcium-4 (Cat. No. R8142; Molecular Devices) prior to stimulation with SST2 agonist, somatostatin-14. The intracellular calcium change was measured by FLIPRTETRA. The relative fluorescent units (RFU) were recorded and normalized to plot against the log of the cumulative doses of somatostatin-14 (mean ± SEM, n = 3). The EC50 of somatostatin-14 on CHO-K1/SST2/Gα15 cells was 99.55 nM.
Notes:
EC50 value is calculated with four parameter logistic equation:
Y=Bottom + (Top-Bottom) / (1+10^ ((LogEC50-X)*Hill Slope))
X is the logarithm of concentration. Y is the response.
Y is % stimulation of RFU and starts at Bottom and goes to Top along a sigmoid curve.
For research use only. Not intended for human or animal clinical trials, therapeutic or diagnostic use.
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