4.7 Article

In Silico Identification of Multi-Target Ligands as Promising Hit Compounds for Neurodegenerative Diseases Drug Development

Journal

Publisher

MDPI
DOI: 10.3390/ijms232113650

Keywords

neurodegenerative diseases; acetylcholinesterase; histone deacetylase 2; monoamine oxidase B; multi-target-directed ligands; virtual screening; docking; pharmacophore; molecular dynamics

Funding

  1. National Science Fund of Bulgaria [KP-06-OPR 03/8]

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This study screened over 650,000 compounds using in silico approaches to identify potential multi-target-directed ligand drugs for neurodegenerative diseases. Two hit compounds were obtained through subsequent evaluation and simulation, providing a rational basis for further development.
The conventional treatment of neurodegenerative diseases (NDDs) is based on the one molecule-one target paradigm. To combat the multifactorial nature of NDDs, the focus is now shifted toward the development of small-molecule-based compounds that can modulate more than one protein target, known as multi-target-directed ligands (MTDLs), while having low affinity for proteins that are irrelevant for the therapy. The in silico approaches have demonstrated a potential to be a suitable tool for the identification of MTDLs as promising drug candidates with reduction in cost and time for research and development. In this study more than 650,000 compounds were screened by a series of in silico approaches to identify drug-like compounds with predicted activity simultaneously towards three important proteins in the NDDs symptomatic treatment: acetylcholinesterase (AChE), histone deacetylase 2 (HDAC2), and monoamine oxidase B (MAO-B). The compounds with affinities below 5.0 mu M for all studied targets were additionally filtered to remove known non-specifically binding or unstable compounds. The selected four hits underwent subsequent refinement through in silico blood-brain barrier penetration estimation, safety evaluation, and molecular dynamics simulations resulting in two hit compounds that constitute a rational basis for further development of multi-target active compounds against NDDs.

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