期刊
BIOORGANIC CHEMISTRY
卷 76, 期 -, 页码 237-248出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bioorg.2017.11.013
关键词
Ecto-5 '-nucleotidase (e5 ' NT); Alkaline phosphatases (APs); 4-aminopyridinederivatives; Mechanism of action; Molecular docking studies
资金
- Organization for the Prohibition of Chemical Weapons (OPCW), The Hague, The Netherlands
- Higher Education Commission of Pakistan [20-3733/NRPU/RD/14/520]
- Canadian Institutes of Health Research (CIHR)
- Chercheur National research award from Fonds de recherche du Quebec - Sante (FRQS)
Ecto-nucleotidase members i.e., ecto-5'-nucleotidase and alkaline phosphatase, hydrolyze extracellular nucleotides and play an important role in purinergic signaling. Their overexpression are implicated in a variety of pathological states, including immunological diseases, bone mineralization, vascular calcification and cancer, and thus they represent an emerging drug targets. In order to design potent and selective inhibitors, new derivatives of 4-aminopyridine have been synthesized (10a-10m) and their structures were established on the basis of spectral data. The effect of nature and position of substituent was interestingly observed and justified on the basis of their detailed structure activity relationships (SARs) against both families of ecto-nucleotidase. Compound 10a displayed significant inhibition (IC50 +/- SEM = 0.25 +/- 0.05 mu M) that was found approximate to 168 fold more potent as compared to previously reported inhibitor suramin (IC50 +/- SEM = 42.1 +/- 7.8 mu M). This compound exhibited 6 times more selectivity towards h-TNAP over h-e5'NT. The anticancer potential and mechanism were also established using cell viability assay, flow cytometric analysis and nuclear staining. Molecular docking studies were also carried out to gain insight into the binding interaction of potent compounds within the respective enzyme pockets and herring-sperm DNA. (C) 2017 Elsevier Inc. All rights reserved.
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