In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease

The SARS-CoV-2 papain-like protease (PLpro) is essential for viral replication and a promising target for drug discovery. This study explored the inhibitory potential of compounds from Indonesia herbals Butterfly pea flower (Clitoria ternatea L), Star fruit leaves (Averrhoa carambola L.), and Java...

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Main Authors: Fairuz Andini Fatiningtyas, Riswanto Napitupulu, Amarila Malik, Is Helianti
Format: Article
Language:English
Published: Bogor Agricultural University 2024-12-01
Series:Hayati Journal of Biosciences
Online Access:https://journal.ipb.ac.id/index.php/hayati/article/view/59130
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author Fairuz Andini Fatiningtyas
Riswanto Napitupulu
Amarila Malik
Is Helianti
author_facet Fairuz Andini Fatiningtyas
Riswanto Napitupulu
Amarila Malik
Is Helianti
author_sort Fairuz Andini Fatiningtyas
collection DOAJ
description The SARS-CoV-2 papain-like protease (PLpro) is essential for viral replication and a promising target for drug discovery. This study explored the inhibitory potential of compounds from Indonesia herbals Butterfly pea flower (Clitoria ternatea L), Star fruit leaves (Averrhoa carambola L.), and Java plum leaves (Syzygium cumini (L.) Skeels) against PL pro through molecular docking and in vitro assays. The molecular docking method utilized the target protein PLpro (PDB ID: 7CMD), with the native ligand obtained from compounds identified in these plant extracts. The compounds were identified using the KNApSAcK database and analyzed for drug-likeness based on Lipinski's Rule of Five. The physicochemical characteristics affecting absorption, distribution, metabolism, excretion, and toxicity (ADMET) were determined using the pkCSM descriptor algorithm protocol. Validation was performed using the redocking method, achieving an RMSD score of 0.728 Å, which indicated validity (RMSD <2.0 Å). The results identified four ligands with the lowest binding affinities from these extracts: (-)-Epicatechin 3-O-gallate, folic acid, petunidin 3-glucoside, and ellagic acid, with binding scores of -8.6, -8.3, -7.1, and -7.1 kcal/mol, respectively. Prior to conducting the PLpro in vitro inhibition assay, a fluorescence-based inhibition assay was performed using Z-RLRGG-AMC as the substrate and GRL0617as the control inhibitor. All extracts were subjected to 70% ethanol maceration. The IC50 value of GRL0617 was 3.38 μM, while fluorescence tests showed that Java plum leaf extract exhibited the highest inhibition percentage at 66.10±3.22%. These findings indicate that all three plant extracts contain compounds capable of inhibiting PLpro activity.
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spelling doaj-art-2e5dc4bec6d34048b33b193d9d8cedab2025-01-08T09:00:46ZengBogor Agricultural UniversityHayati Journal of Biosciences1978-30192086-40942024-12-0132210.4308/hjb.32.2.356-366In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like ProteaseFairuz Andini Fatiningtyas0Riswanto Napitupulu1Amarila Malik2Is Helianti3Division of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmacy, Universitas Indonesia, UI Depok Campus, Depok 16424, IndonesiaDivision of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmacy, Universitas Indonesia, UI Depok Campus, Depok 16424, IndonesiaDivision of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmacy, Universitas Indonesia, UI Depok Campus, Depok 16424, IndonesiaResearch Center for Genetic Engineering, National Research and Innovation Agency (BRIN), Republic of Indonesia, STP Soekarno, Jalan Raya Bogor Km 46, Cibinong, Bogor, Indonesia The SARS-CoV-2 papain-like protease (PLpro) is essential for viral replication and a promising target for drug discovery. This study explored the inhibitory potential of compounds from Indonesia herbals Butterfly pea flower (Clitoria ternatea L), Star fruit leaves (Averrhoa carambola L.), and Java plum leaves (Syzygium cumini (L.) Skeels) against PL pro through molecular docking and in vitro assays. The molecular docking method utilized the target protein PLpro (PDB ID: 7CMD), with the native ligand obtained from compounds identified in these plant extracts. The compounds were identified using the KNApSAcK database and analyzed for drug-likeness based on Lipinski's Rule of Five. The physicochemical characteristics affecting absorption, distribution, metabolism, excretion, and toxicity (ADMET) were determined using the pkCSM descriptor algorithm protocol. Validation was performed using the redocking method, achieving an RMSD score of 0.728 Å, which indicated validity (RMSD <2.0 Å). The results identified four ligands with the lowest binding affinities from these extracts: (-)-Epicatechin 3-O-gallate, folic acid, petunidin 3-glucoside, and ellagic acid, with binding scores of -8.6, -8.3, -7.1, and -7.1 kcal/mol, respectively. Prior to conducting the PLpro in vitro inhibition assay, a fluorescence-based inhibition assay was performed using Z-RLRGG-AMC as the substrate and GRL0617as the control inhibitor. All extracts were subjected to 70% ethanol maceration. The IC50 value of GRL0617 was 3.38 μM, while fluorescence tests showed that Java plum leaf extract exhibited the highest inhibition percentage at 66.10±3.22%. These findings indicate that all three plant extracts contain compounds capable of inhibiting PLpro activity. https://journal.ipb.ac.id/index.php/hayati/article/view/59130
spellingShingle Fairuz Andini Fatiningtyas
Riswanto Napitupulu
Amarila Malik
Is Helianti
In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease
Hayati Journal of Biosciences
title In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease
title_full In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease
title_fullStr In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease
title_full_unstemmed In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease
title_short In Silico and In Vitro Inhibitory Activity of Indonesian Herbal Compound Extracts against SARS-COV-2 Recombinant Papain-Like Protease
title_sort in silico and in vitro inhibitory activity of indonesian herbal compound extracts against sars cov 2 recombinant papain like protease
url https://journal.ipb.ac.id/index.php/hayati/article/view/59130
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