The C-terminal tails of 4,4'-diphenylmethane-bis(methyl) carbamate are essential for binding to receptor for advanced glycation end products to attenuate advanced glycation end products-induced inflammation and apoptosis responses in human umbilical vein endothelial cells

The Journal of Pharmacy and Pharmacology
Liang FengQuan Zhu

Abstract

A novel compound 4,4'-diphenylmethane-bis(methyl) carbamate (CM1) was shown to possess preventive activity on AGEs-induced human umbilical vein endothelial cells (HUVECs) damage via binding to RAGE. However, the underlying structural basis of CM1 on binding to RAGE was not fully understood. In the present study, CM1 analogues were designed and synthesized to compare the activity differences on inhibiting AGEs-induced inflammatory response including TGF-β1, RAGE protein expression in HUVECs, and macrophages migration and adhesion to HUVECs. In addition, the cell viability and anti-apoptosis activities of CM1 analogues were also examined. These results indicated that CM1 had higher activities on preventing AGEs-induced HUVECs damage (inflammation, cell viability and apoptosis) than other analogues. The bioaffinity assay was conducted by CMC and demonstrated that the IC50 and dissociation equilibrium constants (Kd) of CM1 were lower whereas the Bmax was higher than other analogues. The incubation of RAGE protein with CM1 analogues by equilibrium dialysis method showed CM1 had a stronger binding rate than other CM1 analogues. Our findings suggested that the C-terminal tails (methoxycarbonyl groups) of CM1 were the active groups for...Continue Reading

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