Product Description |
Recombinant CHO-K1 cells stably overexpress human G protein-coupled receptor 68 (GPR68) on the surface and contain high levels of G protein Gαi and Gαq to couple with the receptor in downstream signaling pathways. |
Applications |
Calcium flux assay. |
Expressed Gene |
NCBI reference sequence NM_003485; no expressed tags |
Target Protein |
NP_003476 |
Host Cell |
CHO-K1 |
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. |
Mycoplasma Status |
Negative. The mycoplasma test was performed with MycoAlert™ PLUS Mycoplasma Detection Kit (Cat. No. LT07-318, Lonza). |
Stability |
Stable through more than 16 passages with no significant changes in assay performance or expression profile. |
Culture Properties |
Adherent |
Freeze Medium |
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) |
Complete Growth Medium |
Ham’s F-12K (Kaighn’s), 10% FBS |
Culture Medium |
Ham’s F-12K (Kaighn’s), 10% FBS, 400 μg/ml Geneticin (Cat. No. 10131-035, Life Technologies), 100 μg/ml Hygromycin B (Cat. No. 10687010, Life Technologies) |
Gene Synonyms |
AI2A6, GPR12A, OGR1 |
Background |
The GPR68 is a proton-sensing receptor involved in pH homeostasis. A study revealed that in osteosarcoma cells and primary human osteoblast precursors which expression of GPR68 exhibit strong pH-dependent inositol phosphate formation. |

Figure 1. H+-induced concentration-dependent stimulation of intracellular calcium mobilization in CHO-K1/GPR68/Gα15 cells. The cells were loaded with Calcium-4 prior to being stimulated with agonist H+. The intracellular calcium change was normalized and measured by FLIPR. The relative fluorescent units (RFU) were normalized and plotted against the log of the cumulative doses of H+ (Mean ± SEM, n = 3). The EC50 of H+ on this cell was 0.24 μM.
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 RFU and starts at Bottom and goes to Top with a sigmoid shape.
For research use only. Not intended for human or animal clinical trials, therapeutic or diagnostic use.
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