Human glucagon-like peptide-1 receptor activator and application thereof
A technology of glucagon and receptor activator, applied in the field of human glucagon-like peptide-1 receptor activator, can solve the problems of patients with hypoglycemia and weight, and achieve inhibition of expression, improvement of insulin synthesis, inhibition of acetyl Effect of coenzyme A synthase activity
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Embodiment 1
[0062] Affinity Evaluation of Icaritin (ICT) and N-terminal Extracellular Domain of GLP-1R
[0063] The operation method is: using the existing protein crystal structure model (3IOL) on RCSB-PDB, in Schrodinger (Schrödinger) software, based on the fit of ligand and receptor structure, flexible and polar docking mode, evaluate icariin ( ICT) and the affinity of the N-terminal extracellular domain of GLP-1R.
[0064] The docking result is as figure 1 As shown, it can be seen from the figure that: ICT has a docking site in the LYS113-GLU127 domain.
Embodiment 2
[0066] Inhibitory effect of icariin (ICT) on the increase of triglycerides (TGs) in islet cells induced by palmitate (PA) treatment
[0067] The operation method is: use RPMI 1640 medium to cultivate INS-1E cells (rat insulinoma cells) and β-TC6 cells (mouse insulinoma islet β cells) (containing 11.1mM glucose, 10% fetal bovine serum, 10mM HEPES, 2 mM glutamine, 1 mM sodium pyruvate, 100 U / mL penicillin, 100 μg / mL streptomycin and 50 μM β-mercaptoethanol). Palmitate (PA) was dissolved in 0.5% fatty acid-free bovine serum albumin (BSA) solution to a final concentration of 0.5 mM in RPMI 1640. Cells were cultured at 37°C in a humidified incubator containing 5% carbon dioxide. All experiments used cells in logarithmic growth phase. Mouse pancreatic INS-1E and β-TC6 cell lines were treated with 0.5mM PA and ICT (2.5, 5, 10, 20μM) for 48h, respectively.
[0068] The result is as figure 2 with image 3 As shown (in the figure, NC represents the negative control group, PA repre...
Embodiment 3
[0070] Inhibitory Effect of Icaritin (ICT) on Insulin Secretion Reduction in Islet Cells Under High Glucose Stimulation Induced by Palmitate (PA) Treatment
[0071] The operation method is: use RPMI 1640 medium to cultivate (GIBCO, containing 11.1mM glucose) INS-1E cells (rat insulinoma cells) (10% fetal bovine serum, 10mM HEPES, 2mM glutamine, 1mM sodium pyruvate, 100U / mL penicillin, 100 μg / mL streptomycin and 50 μM β-mercaptoethanol). Palmitate (PA) was dissolved in 0.5% fatty acid-free bovine serum albumin (BSA) solution to a final concentration of 0.5 mM in RPMI 1640. Cells were cultured at 37°C in a humidified incubator containing 5% carbon dioxide. All experiments used cells in logarithmic growth phase. Mouse pancreatic INS-1E cell line was treated with 0.5mM PA and ICT (5, 10, 20μM) for 48h respectively.
[0072] The result is as Figure 4 As shown (NC in the figure represents the negative control group), it can be seen from the figure that: ICT can relieve the dec...
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