KC-4217

293T-CRE-Luc2-mouse-GIPR Cell Line

42803

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Background of 293T-CRE-Luc2-mouse-GIPR Cell Line

Cyclic adenosine monophosphate (cAMP), the first discovered second messenger, plays a key role in cell signaling, regulating many physiological and pathological processes. cAMP can regulate the transcription of a variety of target genes, primarily through protein kinase A (PKA) and its downstream effectors such as cAMP-responsive element binding protein (CREB). In addition, PKA can also phosphorylate a variety of kinases such as Raf, GSK3, and FAK. cAMP-PKA signaling abnormalities involve many types of human tumors. Glucose-dependent insulin polypeptides (GIPs) are products of the GIP gene and act as incretin hormone in mammals. Gip is most closely associated with the glucagongen (Gcg) and Exendin genes, and was isolated from these genes early in vertebrate evolution. In mammals, GIP works through its specific receptor, encoded by the Gipr gene, which belongs to the 7-transmembrane g protein-coupled receptor (GPCR) gene subfamily, which also includes glucagongen-derived peptides (Gcgr, Glp1r and Glp2r) and Exendin receptors (Grlr). The Gip, Gipr, Exendin and Grlr genes are found in most vertebrates.

Specifications

Catalog Number	KC-4217
Cell Line Name	293T-CRE-Luc2-mouse-GIPR Cell Line
Host Cell Line	293T-CRE-Luc2
Description	Stable 293T-CRE-Luc2 cell line expressing exogenous mouse GIPR gene
Quantity	Two vials of frozen cells (≥2-10⁶/vial)
Stability	Stable in culture over a minimum of 10 passages
Application	Cell model for monitoring GIPR signaling pathway
Freezing Medium	70% DMEM+20% FBS+10% DMSO
Propagation Medium	DMEM+10% FBS +140μg/ml Hygromycin+1μg/ml Puromycin
Selection Marker	Puromycin, Hygromycin B
Morphology	Epithelial
Subculture	Split saturated culture 1:4-1:8 every 2-3 days; seed out at about 1-3 × 10⁵ cells/mL
Incubation	37 °C with 5% CO₂
Storage	Liquid nitrogen immediately upon receiving
Doubling Time	Approximately 30 hours
Mycoplasma Status	Negative
In Vivo Validation	NA

Cell Line Generation

Characterization

Figure: 293T-CRE-Luc2-mouse-GIPR cell line was seeded into the 96-well plate, and treated with mouse-GIP at a maximum concentration of 1μg/mL for 16 hours, then readout with Bright-Glo system.

Cell Resuscitation

Prewarm culture medium (DMEM supplemented with 10% FBS, 140μg/mL Hygromycin and 1μg/mL Puromycin)in a 37°C water bath.
Thaw the frozen vial in a 37°C water bath for 1-2 minutes.
Transfer the vial into biosafety cabinet, and wipe the surface with 70% ethanol.
Unscrew the top of the vial and transfer the cell suspension gently into a sterile centrifuge tube containing 9.0mL complete culture medium.
Spin at ~ 125 × g for 5-7 minutes at room temperature, and discard the supernatant without disturbing the pellet.
Resuspend cell pellet with the appropriate volume of complete medium and transfer the cell suspension into a T25 culture flask.
Incubate the flask at 37°C, 5% CO₂ incubator.
Split saturated culture 1:4-1:8 every 2-3 days; seed out at about 1-3 × 10⁵ cells/mL.

Cell Freezing

Prepare the freezing medium (70% DMEM + 20% FBS + 10% DMSO) fresh immediately before use.
Keep the freezing medium on ice and label cryovials.
Transfer cells to a sterile, conical centrifuge tube, and count the cells.
Centrifuge the cells at 250×g for 5 minutes at room temperature and carefully aspirate off the medium.
Resuspend the cells at a density of at least 3×10⁶ cells/mL in chilled freezing medium.
Aliquot 1 mL of the cell suspension into each cryovial.
Freeze cells in the CoolCell freezing container overnight in a -80°C freezer.
Transfer vials to liquid nitrogen for long-term storage.

References

Sands WA, Palmer TM. Regulating gene transcription in response to cyclic AMP elevation. Cell Signal. 2008 Mar;20(3):460-6. doi: 10.1016/j.cellsig.2007.10.005. Epub 2007 Oct 12. PMID: 17993258.
Campbell JE. Targeting the GIPR for obesity: To agonize or antagonize? Potential mechanisms. Mol Metab. 2021 Apr;46:101139. doi: 10.1016/j.molmet.2020.101139. Epub 2020 Dec 5. PMID: 33290902; PMCID: PMC8085569.