"GRPR" Related Products


Human GRPR Stable Cell Line-CHO

Cat.No.: CSC-RG0803
Cell Line Description: CHO-HuGRPR cell line is clonally-derived from a CHO cell line, which has been transfected with a human gastrin-releasing peptide receptor GRPR to allow expression of the human GRPR. It is an example of a cell line transfected using our proprietary CBTGS gene screening and amplification system.
Background: Bombesin is a 14 amino acid peptide isolated from frog skin. The mammalian counterparts are neuromedin B (NMB) and gastrin-releasing peptide (GRP). Three bombesin receptor subtypes (BB1, BB2 and BB3) have been classified in humans according to the rank order of potency to the endogenous ligands: NMB, GPR and bombesin. BB1 binds to NMB with 10-800-fold higher affinity than GRP and is also named NMB receptor, whereas BB2 binds to GRP with 50-300-fold higher affinity than NMB and therefore named GRP receptor. BB2 receptors are widely distributed in the CNS as well as in the gastrointestinal tract and reproductive organs. In CNS, Bombesin-like peptides induce satiety and play a role in thermoregulation and induce histamine-independent pruritus. These peptides also act via the BB2 receptor to regulate sleep disorders, depression and involved in the regulation of emotionally motivated learning, memory and food intake. In the gastrointestinal tract, GRPR receptors are involved in smooth muscle contractility, pancreatic secretion and the release of many other gastrointestinal peptides.
Growth Properties: Adherent
Morphology: Epithelial-like
Host Cell: CHO-K1
Cell Line Validation: 1. Gene expression: qPCR experiments determined specific expression of human GRPR.2. Protein expression: GRPR expression in this cell line has been validated by WB.3. Functional validation: calcium assay.
Stability: 12 passages of continuous culture (6 weeks) at 2 passages/week
Sub-type: Bombesin
Propagation: Complete growth medium: Ham"s F12, 10% FBS, 1% NEAA, 400 μg/mL G418Atmosphere: air, 95%; carbon dioxide (CO2), 5% Temperature: 37.0°C
Starting Cells From Frozen Cell Stock: 1. Remove the packaging cell lines from liquid nitrogen and carry out a quick thaw. Float the cells in the 37°C water bath for 2 minutes until nearly (80%) thawed. Once cells are thawed, it is important to dilute the cells 1:10 in growth media immediately to reduce the potentially toxic effects of the DMSO preservative on the cells.2. Clean the outside of the vial with 70% ethanol before opening.3. Remove the cells from the vial and add slowly into a 15ml conical tube containing 10 ml pre-warmed media. 4. Centrifuge for 3 minutes 1000 xg to pellet cells and remove the supernatant.5. Add 14 ml of media and transfer cells to a T25 flask or a 100 mm culture dish.6. Place the cells in the 37°C incubator with 5% CO2.7. Allow incubation for 3-4 days to reach confluence. The cells will re-attach to the surface over a period of several days in culture at 37°C.
Subculturing: 1. Remove and discard culture medium.2. Briefly rinse the cell layer with 0.25% (w/v) Trypsin-0.53 mM EDTA solution to remove all traces of serum that contains trypsin inhibitor.3. Add 2.0 to 3.0 ml of Trypsin-EDTA solution to flask and observe cells under an inverted microscope until cell layer is dispersed (usually within 5 to 15 minutes).Note: To avoid clumping do not agitate the cells by hitting or shaking the flask while waiting for the cells to detach. Cells that are difficult to detach may be placed at 37°C to facilitate dispersal.4. Add 6.0 to 8.0 ml of complete growth medium and aspirate cells by gently pipetting.5. Add appropriate aliquots of the cell suspension to new culture vessels.Incubate cultures at 37°C.Subcultivation Ratio: A subcultivation ratio of 1:4 to 1:8 is recommended Medium Renewal: 2 to 3 times per week
Mycoplasma: Mycoplasma Status: Negative (MycoAlert Kit)
Freeze Medium: Complete growth medium 95%; DMSO, 5%
Storage: Liquid nitrogen
Preservation: 1. Detach cells from culture dish according to the Sub-Culture Procedure.2. Resuspend cells at a density of 5 x 10^6 cells/mL in freeze medium.Note: A T-75 culture flask typically yields enough cells for preparing two frozen vials.3. Aliquot 1 mL cells into cryogenic vials.4. Place vials in a freezing container and store at –80 °C overnight.5. Transfer vials to liquid nitrogen for long term storage. If properly stored, cells should remain stable for years.
Safety Considerations: The following safety precautions should be observed.1. Use pipette aids to prevent ingestion and keep aerosols down to a minimum.2. No eating, drinking or smoking while handling the stable line.3. Wash hands after handling the stable line and before leaving the lab.4. Decontaminate work surface with disinfectant or 70% ethanol before and after working with stable cells.5. All waste should be considered hazardous.6. Dispose of all liquid waste after each experiment and treat with bleach.
Ship: Dry ice
Gene Name: GRPR gastrin-releasing peptide receptor [ Homo sapiens ]
Official Symbol: GRPR
Synonyms: GRPR; gastrin-releasing peptide receptor; GRP-R; GRP-preferring bombesin receptor;
Gene ID: 2925
mRNA Refseq: NM_005314
Protein Refseq: NP_005305
MIM: 305670
UniProt ID: P30550
Chromosome Location: Xp22.2
Pathway: Calcium signaling pathway, organism-specific biosystem; Calcium signaling pathway, conserved biosystem; Class A/1 (Rhodopsin-like receptors), organism-specific biosystem; G alpha (q) signalling events, organism-specific biosystem; GPCR downstream signaling, organism-specific biosystem; GPCR ligand binding, organism-specific biosystem; GPCRs, Class A Rhodopsin-like, organism-specific biosystem;
Function: G-protein coupled peptide receptor activity; bombesin receptor activity; neuropeptide binding; receptor activity; signal transducer activity;

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