4,5-Dicaffeoylquinic acid

4,5-Dicaffeoylquinic acid (Isochlorogenic acid C) is an antioxidant, can be isolated from Gynura divaricata and Laggera alata. 4,5-Dicaffeoylquinic acid reduces islet cell apoptosis and improves pancreatic function in type 2 diabetic mice, and has obvious inhibitory activities against yeast α-glucosidase. 4,5-Dicaffeoylquinic acid inhibits prostate cancer cells through cell cycle arrest. 4,5-Dicaffeoylquinic acid also has anti-apoptotic, anti-injury and anti-hepatitis B virus effects^[1][2][3]. In Vitro: 4,5-Dicaffeoylquinic acid (0.1~100 µM; 72 h) has dose-dependent inhibitory activity against DU-145 prostate cancer cells, and induces cell cycle arrest, also induces inactivation of Bcl-2^[2].
4,5-Dicaffeoylquinic acid (1~100 µg/mL; 48 h) has anti-apoptotic effect in D-GalN-challenged HL-7702 hepatocytes, and improves significantly cell viability at concentrations of 10 to 100 µg/mL^[3].
4,5-Dicaffeoylquinic acid (1~100 µg/mL; 4 days) inhibits significantly expressions of HBsAg and HBeAg, and produces the maximum inhibition rates of 86.93 and 59.79% at 100 µg/mL on expressions of HBsAg and HBeAg, respectively^[3]. In Vivo: 4,5-Dicaffeoylquinic acid enhances the expression of GLUT2, GK, and PDX-1 protein, and effectively alleviate glycaemia and insulin resistance and enhance insulin sensitivity in type 2 diabetic mice^[1].