John Ogbaji Igoli, Alexander Irvine Gray, Carol Jean Clements, Poorna Kantheti and Rajeev Kumar Singla Pages 1014 - 1021 ( 8 )
Chemical investigation of the lichen Cetraria islandica has led to the isolation of four compounds identified as protolichesterinic acid, lichesterinic acid, protocetraric acid and fumarprotocetraric acid. Their structures were characterized using their physical and spectroscopic data. Using an Alamarblue™ 96 well microplate assay, these compounds were tested to evaluate their trypanocidal activity against Trypanosoma brucei brucei. Protolichesterinic acid (MIC = 6.30 µM) and lichesterinic acid (MIC = 12.5 µM) showed very significant activity against the test organism. Docking studies (GRIP technique) of these molecules revealed their strong affinity towards possible targets of Trypanosoma brucei such as riboflavin kinase, sterol-14α-demethylase (CYP51), rohedsain and glutathione synthetase. Hydrophobicity played a significant role in their antitrypanosomal activity.
Antitrypanosomal activity, Cetraria islandica, grip docking, iceland moss, phytoconstituents.
Division of Biotechnology, Netaji Subhas Institute of Technology, Azad Hind Fauz Marg, Sector-3, Dwarka-110078 New Delhi-78, India.