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Research Articles

Energetically optimized pharmacophore modeling to identify dual negative allosteric modulators against group I mGluRs in neurodegenerative diseases

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Pages 2326-2337 | Received 09 May 2019, Accepted 04 Jun 2019, Published online: 08 Aug 2019
 

Abstract

Glutamate is the key neurotransmitter in human brain that regulates the important functions such as learning, memory and cognition. Abnormal regulation of glutamate leads to various neurodegenerative disorders. To regulate the glutamate signaling pathway we have employed a computational technique called energetically optimized pharmacophore model. We selected four-point pharmacophore (HRRR) based on the glide energy scores and screened the eMolecules database having more than 10 million compounds to find the potential dual negative allosteric modulators for both mGluR1 and mGluR5. The pharmacokinetic properties were calculated to filter out the unwanted molecules. Further, molecular docking, enrichment calculations and molecular dynamics simulations were executed. Finally, the top two compounds (1080734, 22696638) selected from the screened database could be potent dual negative allosteric modulators for the targeted proteins mGluR1 and mGluR5.

Abbreviations
CNS=

central nervous system

GPCR=

G-protein coupled receptor

mGluR=

metabotropic glutamate receptor

IFD=

induced fit docking

POPC=

palmitoyloleoylphosphatidylcholine

VFT=

Venus flytrap domain

RMSD=

root mean square deviation

RMSF=

root mean square fluctuation

7TM=

seven transmembrane

Communicated by Ramaswamy H. Sarma

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

Research fellowship and financial support to SVP by Department of Biotechnology, Government of India is acknowledged. SKS (Project No.: BT/502/NE/TBP/2013 and BT/PR8138/BID/7/458/2013) is also acknowledged. SKS and SVP also thanks DST-PURSE 2nd Phase Programme Order No. SR/PURSE Phase 2/38 (G dated 21.02.2017 and FIST (SR/FST/LSI - 667/2016), MHRD RUSA 1 and RUSA2.0 for the providing the financial assistance to enhance the infrastructure facilities.

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