UPM Institutional Repository

Investigation of α-glucosidase inhibitory metabolites from Tetracera scandens leaves by GC–MS metabolite profiling and docking studies


Nokhala, Ahmed and Siddiqui, Mohammad Jamshed and Ahmed, Qamar Uddin and Ahamad Bustamam, Muhammad Safwan and Zakaria, Zainul Amiruddin (2020) Investigation of α-glucosidase inhibitory metabolites from Tetracera scandens leaves by GC–MS metabolite profiling and docking studies. Biomolecules, 10 (2). art. no. 287. pp. 1-17. ISSN 2218-273X


Stone leaf (Tetracera scandens) is a Southeast Asian medicinal plant that has been traditionally used for the management of diabetes mellitus. The underlying mechanisms of the antidiabetic activity have not been fully explored yet. Hence, this study aimed to evaluate the α-glucosidase inhibitory potential of the hydromethanolic extracts of T. scandens leaves and to characterize the metabolites responsible for such activity through gas chromatography–mass spectrometry (GC–MS) metabolomics. Crude hydromethanolic extracts of different strengths were prepared and in vitro assayed for α-glucosidase inhibition. GC–MS analysis was further carried out and the mass spectral data were correlated to the corresponding α-glucosidase inhibitory IC50 values via an orthogonal partial least squares (OPLS) model. The 100%, 80%, 60% and 40% methanol extracts displayed potent α-glucosidase inhibitory potentials. Moreover, the established model identified 16 metabolites to be responsible for the α-glucosidase inhibitory activity of T. scandens. The putative α-glucosidase inhibitory metabolites showed moderate to high affinities (binding energies of −5.9 to −9.8 kcal/mol) upon docking into the active site of Saccharomyces cerevisiae isomaltase. To sum up, an OPLS model was developed as a rapid method to characterize the α-glucosidase inhibitory metabolites existing in the hydromethanolic extracts of T. scandens leaves based on GC–MS metabolite profiling.

Download File

[img] Text
Restricted to Repository staff only

Download (4MB)
Official URL or Download Paper: https://www.mdpi.com/2218-273X/10/2/287

Additional Metadata

Item Type: Article
Divisions: Faculty of Medicine and Health Science
Halal Products Research Institute
Institute of Bioscience
DOI Number: https://doi.org/10.3390/biom10020287
Publisher: MDPI
Keywords: Tetracera scandens; Metabolite profiling; α-glucosidase inhibition; Orthogonal partial least squares; GC–MS metabolomics; Molecular docking
Depositing User: Nabilah Mustapa
Date Deposited: 03 May 2020 22:59
Last Modified: 03 May 2020 22:59
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/biom10020287
URI: http://psasir.upm.edu.my/id/eprint/38156
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item