Abstract
Cathepsin K is a type of cysteine proteinase that is primarily expressed in osteoclasts and has a key role in the breakdown of bone matrix protein during bone resorption. Many studies suggest that the deficiency of cathepsin K is concomitant with a suppression of osteoclast functioning, therefore rendering the resorptive properties of cathepsin K the most prominent target for osteoporosis. This innovative work has identified a novel anti-osteoporotic agent against Cathepsin K by using a comparison of machine learning and deep learning-based virtual screening followed by their biological evaluation. Out of ten shortlisted compounds, five of the compounds (JFD02945, JFD02944, RJC01981, KM08968 and SB01934) exhibit more than 50% inhibition of the Cathepsin K activity at 0.1 μM concentration and are considered to have a promising inhibitory effect against Cathepsin K. The comprehensive docking, MD simulation, and MM/PBSA investigations affirm the stable and effective interaction of these compounds with Cathepsin K to inhibit its function. Furthermore, the compounds RJC01981, KM08968 and SB01934 are represented to have promising anti-osteoporotic properties for the management of osteoporosis owing to their significantly well predicted ADMET properties.
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Acknowledgements
SP and PPM acknowledges CSIR, Govt. of India, for Senior Research Fellowship. AC acknowledges CSIR, Govt. of India, for junior Research Fellowship. DBT-Grants GAP0384 (BT/PR40131/BTIS/137/26/2021) is with "DBT-Grants GAP0384 (BT/PR40131/BTIS/137/26/2021 and GAP0449 (BT/PR40197/BTIS/137/68/2023) are is also gratefully acknowledged for funding the research reported in this manuscript. Authors are grateful to CSIR-CDRI chemical repository for providing compounds for biological evaluation from Maybridge library. This manuscript bears a CSIR-CDRI communication number 10763.
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SP,AC : Literature review, Experiments, data collection, analysis and compilation, drafting/preparation of manuscript PPM, SA: work related to biological evaluation. MIS/SA: Project design, overall supervision of the project, analysis of results, preparation of manuscript. All authors reviewed the manuscript.
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Parwez, S., Chaurasia, A., Mahapatra, P.P. et al. Integrated machine learning-based virtual screening and biological evaluation for identification of potential inhibitors against cathepsin K. Mol Divers (2024). https://doi.org/10.1007/s11030-024-10845-5
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DOI: https://doi.org/10.1007/s11030-024-10845-5