作者:Nerella Sridhar Goud、S. Mahammad Ghouse、Jatoth Vishnu、D. Komal、Venu Talla、Ravi Alvala、Jakkula Pranay、Janish Kumar、Insaf A. Qureshi、Mallika Alvala
DOI:10.1016/j.bioorg.2019.103016
日期:2019.8
In our pursuit to develop novel non-carbohydrate small molecule Galectin-1 Inhibitors, we have designed a series of 1-benzyl-1H-benzimidazole derivatives and demonstrated their anticancer activity. The compound 6g, 4-(1-benzyl-5-chloro-1H-benzo [d] imidazol-2-yl)-N-(4-hydroxyphenyl) benzamide was found to be most potent with an IC50, of 7.01 +/- 0.20 mu M and arresting MCF-7 cell growth at G2/M phase and S phase. Induction of apoptosis was confirmed by morphological changes like cell shrinkage, blebbing and cell wall deformation, dose dependent increase in the mitochondrial membrane potential (Delta Psi m) and ROS levels. Further, dose dependent decrease in Gal-1 protein levels proves Gal-1 mediated apoptosis by 6g. Molecular docking studies were performed to understand the Gal-1 interaction with compound 6g. In addition, RP-HPLC studies showed 85.44% of 6g binding to Gal-1. Binding affinity studies by fluorescence spectroscopy and Surface Plasmon Resonance (SPR) showed that 6g binds to Gal-1 with binding constant (K-a) of 1.2 x 10(4) M-1 and equilibrium constant K-D value of 5.76 x 10(-4) M respectively.