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Insights of ligand binding in modeled h5-HT1A receptor: homology modeling, docking, MM-GBSA, screening and molecular dynamics
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Cancer precision medicine. Def Res & Dev Org, Div Cyclotron & Radiopharmaceut Sci, Inst Nucl Med & Allied Sci, Brig SK Mazumdar Rd, Delhi 110054, India; Indian Inst Technol Delhi, Dept Chem, New Delhi, India.ORCID iD: 0000-0001-9943-5976
Def Res & Dev Org, Div Cyclotron & Radiopharmaceut Sci, Inst Nucl Med & Allied Sci, Brig SK Mazumdar Rd, Delhi 110054, India..
Indian Inst Technol Delhi, Dept Chem, New Delhi, India.;Indian Inst Technol Delhi, SCFBio, New Delhi, India..ORCID iD: 0000-0002-5477-4410
Indian Inst Technol Delhi, Dept Chem, New Delhi, India..ORCID iD: 0000-0001-8645-430X
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2022 (English)In: Journal of Biomolecular Structure and Dynamics, ISSN 0739-1102, E-ISSN 1538-0254, Vol. 40, no 22, p. 11625-11637Article in journal (Refereed) Published
Abstract [en]

The pharmacologically characterized receptor subtype of the serotonin family, the 5HT1A receptor is implicated in the pathophysiology and treatment of depression and anxiety-related disorders. Being the most extensively targeted receptor for developing novel antidepressants and anxiolytics, a near-ideal theoretical model can aid in high-throughput screening of promising drug candidates. However, the design of potential drug candidates suffers owing to a lack of complete structural information. In this work, homology models of 5-HT1A receptor are generated using two distinct alignments (CW and PSTA) and model building methods (KB and EB). The developed models are validated for virtual screening using a ligand dataset of agonists and antagonists. The best-suited model was efficient in discriminating agonist/antagonist binding. Correlation plots between pKi and docking (R2agonist≥ 0.6, R2antagonist≥ 0.7) and MM-GBSA dG bind values (R2agonist≥ 0.5, R2antagonist≥ 0.7) revealed optimum corroboration between in vitro and in silico outcomes, which further suggested the usefulness of the developed model for the design of high-affinity probes for the neurological disorders.

Place, publisher, year, edition, pages
Taylor & Francis, 2022. Vol. 40, no 22, p. 11625-11637
Keywords [en]
h5-HT1A receptor, homology modeling, docking, ligand binding, molecular dynamics
National Category
Pharmacology and Toxicology
Identifiers
URN: urn:nbn:se:uu:diva-498453DOI: 10.1080/07391102.2021.1961865ISI: 000684750200001PubMedID: 34387135OAI: oai:DiVA.org:uu-498453DiVA, id: diva2:1743853
Available from: 2023-03-16 Created: 2023-03-16 Last updated: 2023-05-31Bibliographically approved

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