Liraglutide (Liraglutida) is a synthetic analog of glucagon-like peptide-1 (GLP-1), an agonist of the GLP-1 receptor. Liraglutide can be used to treat type 2 diabetes and chronic obesity.

HEK293 cells (GLP1 receptor overexpressed):9.3 pM (EC50), LPS-induced production of PEG2:54 nM, GLP1R:0.11 nM, HEK293 cells (GLP-1 receptor expressed):65.7 pM (EC50), LPS-induced production of NO:45 nM, GLP1:542.4 ± 187.5 nM

Assay of ProRS activity: The prolyl tRNA synthetase domain of human EPRS (ProRS) is expressed in E.coli with a 6-his tag and purified. Enzymatic activity is assayed using incorporation of 3H Pro into the tRNA fraction essentially, except that the charged tRNA fraction is isolated by rapid batchwise binding to Mono Q sepharose and quantitated by liquid scintillation counting. For all kinetic assays, the concentration of active enzyme in the reaction is 40 nM. Similar inhibition by HF is seen using the human ProRS domain purified from bacteria and full length EPRS purified from rat liver.

C11-STH cells are cultured to confluence at 37°C in gelatin-coated Nunclon cell culture dishes in Media-199 supplemented with penicillin/streptomycin, 20% FCS, 20 μg/ml endothelial cell growth factor and 20 μg/ml heparin. C11-STH cells are incubated under serum free conditions with liraglutide (100 nM) or the GLP-1 receptor antagonist exendin (9-39) (100 nM) alone or with 10 ng/ml TNFα for 16 h alone or in combination with liraglutide and/or exendin (9-39). ELISA assays for VCAM-1 and ICAM-1 are performed using conditioned medium from C11-STH cells to determine protein expression levels.(Only for Reference)