GLP1R Gene Editing

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GLP1R Gene Editing    

Glucagon-like peptide 1 (GLP-1) is a peptide hormone that is synthesized in the small intestine in response to nutrient ingestion. GLP-1 binds to the GLP-1 receptor (GLP-1R), which is expressed on islet β-cells and belongs to the G protein-coupled receptor family. Activation of the GLP-1R stimulates adenylate cyclase and enhances the production of cAMP, the primary effector of GLP-1-induced insulin secretion. Besides, increased levels of cAMP activate PKA or cAMP-regulated guanine nucleotide exchange factor II (Epac2), and contribute to mediating multiple physiological actions including insulin secretion. The GLP-1R is expressed in pancreatic β-cells and various extrapancreatic tissues including the brain, heart, gut, lung, and kidney. Considering that evidence indicating that cAMP and PKA pathways link to antioxidative effects, it is likely that GLP-1 protects various tissues from oxidative injury.

GLP-1R agonists for the treatment of type 2 diabetes

Currently, modulating GLP-1R activity is used in the treatment of type 2 diabetes. The GLP-1R agonists target a broad spectrum of the multifaceted pathophysiology of T2D. Therefore, they improve glucose homeostasis without risk of hypoglycaemia, facilitate body weight loss, and have potential benefits for cardiovascular parameters. Naturally, the introduction of the GLP-1R agonists has aroused substantial clinical interest.

Administration of GLP-1 analogues (such as exenatide and liraglutide) to type 2 diabetic patients improves glycemic control by augmenting insulin secretion and dampening glucagon secretion, as well as delaying gastric emptying. Exenatide and liraglutide mimic endogenous GLP-1 activity through binding to GLP-1R on various tissues, but these analogues are resistant to degradation. GLP-1 has a half-life of 1-2 min, whereas exenatide has a half-life of 3.4-4 h and liraglutide's half-life is 11-13 h. Thus, these GLP-1 analogues greatly prolong the GLP-1 response promoting normoglycemia in type 2 diabetic patients during fasting and after nutrient ingestion. Recently, one study has found that GLP-1R expression is decreased in the hypothalamus of type 2 diabetic patients in comparison to healthy controls, indicating that the reduced ability of GLP-1 to induce satiety may contribute to the dysfunctional feeding behaviors and metabolic homeostasis observed in these patients.

Endothelial dysfunction is a unifying pathobiological process that links diabetic macrovascular and microvascular complications. Koska et al. demonstrate that exenatide exerts a protective endothelial function effect in the postprandial period following short-term therapy in patients with type 2 diabetes (diabetes duration >5 years). Thus, novel physiological insights derived from these elegant experiments supporting the presence of direct vascular effects with GLP-1R agonists may ultimately help to better interpret the pending results of large cardiovascular and microvascular outcome studies using these agents.

GLP-1R agonists and endothelial function.Figure 1. GLP-1R agonists and endothelial function. (Lovshin J, Cherney D. 2015)

GLP1R Gene Editing Service

CRISPR/Cas9 PlatformCB at Creative Biogene is dedicated to offering comprehensive CRISPR/Cas9 gene editing services and products for academic research, biotech research and pharmaceutical drug discovery. With deep gene editing knowledge and extensive experience in experimental operation and data processing, we help you effectively control GLP1R genes knockout/knockin/point mutation in cells or animals via CRISPR/Cas9 technology.

ServiceDetailsAlternative cell lines or animal species
GLP1R Gene Editing Cell Line GenerationgRNA design and synthesis
Transfect the cell lines you're interested
Select the high expression cells and sort monoclonal cell
Validate the knockout/knockin/point mutation of GLP1R by PCR and sequencing
Provide cryogenic preserved vials of stable cells and final reports
HEK239T, Hela, HepG2, U87, Ba/F3, CHO, MDA-MB-453, MDA-MB-231NIH3T3, T47D, Neuro2a, MCF7, RKO, K562, RAW264.7, etc.
GLP1R Gene Editing Animal Model GenerationGLP1R gene conventional knockout animals
GLP1R gene conditional knockout animals
GLP1R point mutation animals
GLP1R knockin animals
Mouse, rat, rabbit, zebrafish, C. elegans, etc.

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References

  1. Lund A, et al. Glucagon-like peptide-1 receptor agonists for the treatment of type 2 diabetes: differences and similarities. European journal of internal medicine, 2014, 25(5): 407-414.
  2. Lovshin J, Cherney D. GLP-1R agonists and endothelial dysfunction: more than just glucose lowering?. Diabetes, 2015, 64(7): 2319-2321.
  3. Fujita H, et al. The protective roles of GLP-1R signaling in diabetic nephropathy: possible mechanism and therapeutic potential. Kidney international, 2014, 85(3): 579-589.
  4. Simó R, Hernández C. GLP-1R as a target for the treatment of diabetic retinopathy: friend or foe?. Diabetes, 2017, 66(6): 1453-1460.
  5. Reed J, Kanamarlapudi V. GLP-1R. Encyclopedia of signaling molecules. New York, NY: Springer, 2016: 1-12.
For research use only. Not intended for any clinical use.

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