Product Description |
Recombinant CHO-K1 cells stably overexpress human gastric inhibitory
polypeptide receptor (GIP) on the surface and contain high levels of G protein Gαs
to couple with the receptor in downstream signaling pathways. |
Applications |
FACS, calcium
mobilization assay, IP-One assay and cAMP accumulation assay. |
Expressed Gene |
Codon optimized from NM_000164;
no expressed tags |
Target Protein |
NP_000155 |
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,
Gibco), 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, 200 μg/ml Zeocin
(Cat. No. R250-01, Life
Technologies), 100
μg/ml Hygromycin B (Cat. No. 10687010,
Invitrogen) |
Gene Synonyms |
GIPR,
GIP-R |
Background |
Gastric
inhibitory polypeptide receptor GIPR is a Gs-coupled GPCR which is expressed in
the pancreas, stomach, small intestine, adipose tissue, adrenal cortex,
pituitary, heart, testis, endothelial cells, bone, trachea, spleen, thymus,
lung, kidney, thyroid, and several regions in the CNS. Its ligand GIP is
secreted after meal ingestion has been shown to stimulate bone formation
resulting in lower occurrences of osteoporosis. GIPR may have therapeutic potential
in the treatment of type 2 diabetes and obesity. |
Figure 1. GIP-induced concentration-dependent stimulation of intracellular calcium mobilization in CHO-K1/GIP/Gα15 cells. The cells were loaded with Calcium-4 prior to being stimulated with agonist GIP. 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 GIP (Mean ± SEM, n = 3). The EC50 of GIP on this cell was 0.12 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 % stimulation of 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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