Journal
CURRENT CANCER DRUG TARGETS
Volume 17, Issue 8, Pages 722-734Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/1568009617666170330152617
Keywords
Phosphoinositide-3-kinase gamma (PI3K gamma); anticancer; QSAR; serpentine; gallic acid; docking; ADMET
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Funding
- SERB, New Delhi [GAP-260, SR/FT/LS-25/2010]
- Council of Scientific and Industrial Research (CSIR) New Delhi at CSIR-CIMAP, Lucknow [BSC0121, BSC0203]
- Department of Science & Technology (DST), Govt. of India, New Delhi through DST-INSPIRE [IF110565]
- WOS-B at CSIR-CIMAP, Lucknow, India [GAP-339, DST/KIRAN/SoRF-PM/007/2015/CG]
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Background: Natural products showed anticancer activity and often induce apoptosis or autophagy in cancer cells through the PI3K/Akt/mTOR signaling pathways. The potential of natural products as PI3Ks inhibitors has been reported, which suggest PI3Ks a promising anticancer target. Phosphoinositide 3-kinase is a family of related intracellular signal transducer enzymes or lipid kinases that regulate different cellular processes involved in cancer. Objective: To identify the molecular reason behind the similar target based activity of selected shikimate pathway metabolites on PI3K gamma, a detail structure-activity relationship study was performed. Method: In the studied work, anticancer potential of plant molecules gallic acid and serpentine was evaluated against PI3K. isoform and compared with wortmannin, a steroid metabolite of the fungi and a non-specific covalent known inhibitor of PI3Ks by using in-silico QSAR, docking, ADMET, chemical isolation from plant, NMR and in-vitro activity. Results: A predictive QSAR model was developed by applying multiple linear regression which revealed identification of key structural properties regulating the inhibitory activity of serpentine and gallic acid on PI3K gamma. The model exhibited acceptable statistical parameters such as r(2) 0.76, r(2)CV 0.72, and q(2) 0.55. Structural elucidation was done through NMR studies. Predicted activities were further evaluated through in-vitro testing of gallic acid and serpentine targeting PI3K.gamma Conclusion: The identified chemical features modulating the activity were amide, amine, and secondary amine groups counts, highest occupied molecule orbital (HOMO) energy and valence connectivity index (order 2). In-silico ADME and toxicity risk assessment was done for pharmacokinetic and bioavailability compliance evaluation.
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