Anti-diabetic efficacy of KICG1338, a novel glycogen synthase kinase-3 beta inhibitor, and its molecular characterization in animal models of type 2 diabetes and insulin resistance

作者：Kim Kyoung Min; Lee Kuy Sook; Lee Gha Young; Jin Hyunjin; Durrance Eunice Sung; Park Ho Seon; Choi Sung Hee; Park Kyong Soo; Kim Young Bum; Jang Hak Chul; Lim Soo^*

来源：Molecular and Cellular Endocrinology, 2015, 409(C): 1-10.

DOI：10.1016/j.mce.2015.03.011

• Glycogen synthase kinase-3
• Obesity
• Diabetes
• OLETF rat
• Diet-induced obese mice
• GLUT

Selective inhibition of glycogen synthase kinase-3 (GSK3) has been targeted as a novel therapeutic strategy for diabetes mellitus. We investigated the anti-diabetic efficacy and molecular mechanisms of KICG1338 (2-(4-fluoro-phenyl)-3H-imidazo[4,5-b]pyridine-7-carboxylic acid(4-methyl-pyridin-3-yl)-amide), a GSK3 beta inhibitor, in three animal models: Otsuka Long-Evans Tokushima Fatty (OLETF) rats, leptin receptors-deficient db/db mice, and diet-induced obese (DIO) mice. Biochemical parameters including glucose tolerance tests and gene expressions associated with glucose metabolism were investigated. Glucose excursion decreased significantly by KICG1338-treated OLETF rats, accompanied by increase in insulin receptor substrate-1 and glucose transporter (GLUT)-4 expressions in muscle and decreased GLUT-2 expression in liver. Glucose-lowering effects were similarly observed in KICG1338-treated db/db and DIO mice. KICG1338 treatment increased adiponectin levels and decreased TNF-alpha levels. KICG1338 therapy also led to greater beta-cell preservation and less hepatic fat infiltration with decreased expressions of genes involved in inflammation and endoplasmic reticulum stress. These data demonstrate anti-diabetic efficacy of KICG1338, a novel GSK3 beta inhibitor.

• 出版日期2015-7-5