title: Discovery of novel inhibitors for human intestinal maltase: virtual screening in a WISDOM environment and in vitro evaluation.
abstract: Human intestinal maltase (HMA) is an α-glucosidase that hydrolyses α-1,4-linkages from the non-reducing end of malto-oligosaccharides. HMA is an important target to discover of new drugs for the treatment of type 2 diabetes. In this study, 308,307 compounds were virtually screened with HMA using Autodock 3.0.5 in a WISDOM production environment to discover novel inhibitors. The 42 top-scoring free binding energy compounds, representing 17 groups containing potential hydrogen bonding with key residues in the active site pocket of HMA, were tested in vitro for their inhibitory activities against recombinant HMA expressed from Pichia pastoris. Compounds 17 and 18 were competitive inhibitors exclusively for HMA without any in vitro inhibition for human pancreatic α-amylase. The K(i) values were 20 μM for both compound 17 and 18.
authors: School of Biological Sciences and Technology & The Research Institute for Catalysis, Chonnam National University, Gwangju, South Korea.
authors: Thi Thanh Hanh
authors: TT
authors: Nguyen
authors: Hwa-Ja
authors: HJ
authors: Ryu
authors: Se-Hoon
authors: SH
authors: Lee
authors: Soonwook
authors: S
authors: Hwang
authors: Jaeho
authors: J
authors: Cha
authors: Vincent
authors: V
authors: Breton
authors: Doman
authors: D
authors: Kim
mesh_terms: D004353:Drug Evaluation, Preclinical / Q000379:methods*; D004791:Enzyme Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism*; D065089:Glycoside Hydrolase Inhibitors; D006801:Humans; D007700:Kinetics; D056004:Molecular Dynamics Simulation; D015394:Molecular Structure; D010843:Pichia / Q000187:drug effects / Q000235:genetics
chemical_list: D004791:Enzyme Inhibitors; D065089:Glycoside Hydrolase Inhibitors