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Yunos NM, Wahab HA, Al-Thiabat MG, Sallehudin NJ, Jauri MH. In Vitro and In Silico Analysis of the Anticancer Effects of Eurycomanone and Eurycomalactone from Eurycoma longifolia. PLANTS (BASEL, SWITZERLAND) 2023; 12:2827. [PMID: 37570981 PMCID: PMC10421158 DOI: 10.3390/plants12152827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 08/13/2023]
Abstract
Eurycomanone and eurycomalactone are known quassinoids present in the roots and stems of Eurycoma longifolia. These compounds had been reported to have cytotoxic effects, however, their mechanism of action in a few cancer cell lines have yet to be elucidated. This study was aimed at investigating the anticancer effects and mechanisms of action of eurycomanone and eurycomalactone in cervical (HeLa), colorectal (HT29) and ovarian (A2780) cancer cell lines via Sulforhodamine B assay. Their mechanism of cell death was evaluated based on Hoechst 33342 assay and in silico molecular docking toward DHFR and TNF-α as putative protein targets. Eurycomanone and eurycomalactone exhibited in vitro anticancer effects manifesting IC50 values of 4.58 ± 0.090 µM and 1.60 ± 0.12 µM (HeLa), 1.22 ± 0.11 µM and 2.21 ± 0.049 µM (HT-29), and 1.37 ± 0.13 µM and 2.46 ± 0.081 µM (A2780), respectively. They induced apoptotic cancer cell death in dose- and time-dependent manners. Both eurycomanone and eurycomalactone were also predicted to have good inhibitory potential as demonstrated by the docking into TNF-α with binding affinity of -8.83 and -7.51 kcal/mol, respectively, as well as into DHFR with binding affinity results of -8.05 and -8.87 kcal/mol, respectively. These results support the evidence of eurycomanone and eurycomalactone as anticancer agents via apoptotic cell death mechanism that could be associated with TNF-α and DHFR inhibition as among possible protein targets.
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Affiliation(s)
- Nurhanan Murni Yunos
- Natural Products Division, Forest Research Institute Malaysia, Kepong 52109, Selangor, Malaysia; (N.J.S.); (M.H.J.)
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia;
| | - Habibah A. Wahab
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia;
| | - Mohammad G. Al-Thiabat
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia;
| | - Nor Jannah Sallehudin
- Natural Products Division, Forest Research Institute Malaysia, Kepong 52109, Selangor, Malaysia; (N.J.S.); (M.H.J.)
| | - Muhamad Haffiz Jauri
- Natural Products Division, Forest Research Institute Malaysia, Kepong 52109, Selangor, Malaysia; (N.J.S.); (M.H.J.)
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Jiang Y, Wang C, Zhang M, Liu L, Gao X, Zhang S, Ye D. Study of folate-based carbon nanotube drug delivery systems targeted to folate receptor α by molecular dynamic simulations. Int J Biol Macromol 2023; 244:125386. [PMID: 37327924 DOI: 10.1016/j.ijbiomac.2023.125386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/03/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023]
Abstract
We designed targeted drug delivery systems containing folate (FOL), the functionalized carbon nanotube (f-CNT) and doxorubicin (DOX), and studied the targeting properties of folate, f-CNT-FOL and DOX/f-CNT-FOL to folate receptor α (FRα). Folate was actively targeted to FRα in molecular dynamics simulations, and the dynamic process, effect of folate receptor evolution, and characteristics were analyzed. On this basis, the f-CNT-FOL and DOX/f-CNT-FOL nano-drug-carrier systems were designed, and the drug delivery process targeted to FRα was studied by 4 times MD simulations. The system evolution and detailed interactions of f-CNT-FOL and DOX/f-CNT-FOL with FRα residues were examined. We found that though the connection of CNT with the FOL could decrease the insertion depth of the pterin of FOL into the pocket of FRα, the loading of drug molecules could reduce this effect. Representative snapshots from the MD simulations were analyzed, showing that the location of DOX on the surface of CNT was constantly changed during the MD simulation, but the surface of the four rings of DOX were almost always parallel to the surface of CNT. The RMSD and RMSF were used to further analyze. The results may provide new insights for the design of novel targeted nano-drug-delivery systems.
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Affiliation(s)
- Yue Jiang
- School of Science, Tianjin Chengjian University, Tianjin, China
| | - Cuihong Wang
- School of Science, Tianjin Chengjian University, Tianjin, China.
| | - Meiling Zhang
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, China
| | - Lijuan Liu
- School of Science, Tianjin Chengjian University, Tianjin, China
| | - Xin Gao
- School of Science, Tianjin Chengjian University, Tianjin, China
| | - Shouchao Zhang
- School of Science, Tianjin Chengjian University, Tianjin, China
| | - Dan Ye
- School of Science, Tianjin Chengjian University, Tianjin, China
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Alhawarri MB, Dianita R, Rawa MSA, Nogawa T, Wahab HA. Potential Anti-Cholinesterase Activity of Bioactive Compounds Extracted from Cassia grandis L.f. and Cassia timoriensis DC. PLANTS (BASEL, SWITZERLAND) 2023; 12:344. [PMID: 36679057 PMCID: PMC9862305 DOI: 10.3390/plants12020344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 06/17/2023]
Abstract
Acetylcholinesterase (AChE) inhibitors remain the primary therapeutic drug that can alleviate Alzheimer's disease's (AD) symptoms. Several Cassia species have been shown to exert significant anti-AChE activity, which can be an alternative remedy for AD. Cassia timoriensis and Cassia grandis are potential plants with anti-AChE activity, but their phytochemical investigation is yet to be further conducted. The aims of this study were to identify the phytoconstituents of C. timoriensis and C. grandis and evaluate their inhibitory activity against AChE and butyrylcholinesterase (BChE). Two compounds were isolated for the first time from C. timoriensis: arachidyl arachidate (1) and luteolin (2). Five compounds were identified from C. grandis: β-sitosterol (3), stigmasterol (4), cinnamic acid (5), 4-hydroxycinnamic acid (6), and hydroxymethylfurfural (7). Compound 2 showed significant inhibition towards AChE (IC50: 20.47 ± 1.10 µM) and BChE (IC50: 46.15 ± 2.20 µM), followed by 5 (IC50: 40.5 ± 1.28 and 373.1 ± 16.4 µM) and 6 (IC50: 43.4 ± 0.61 and 409.17 ± 14.80 µM) against AChE and BChE, respectively. The other compounds exhibited poor to slightly moderate AChE inhibitory activity. Molecular docking revealed that 2 showed good binding affinity towards TcAChE (PDB ID: 1W6R) and HsBChE (PDB ID: 4BDS). It formed a hydrogen bond with TYR121 at the peripheral anionic site (PAS, 2.04 Å), along with hydrophobic interactions with the anionic site and PAS (TRP84 and TYR121, respectively). Additionally, 2 formed three H-bonds with the binding site residues: one bond with catalytic triad, HIS438 at distance 2.05 Å, and the other two H-bonds with GLY115 and GLU197 at distances of 2.74 Å and 2.19 Å, respectively. The evidence of molecular interactions of 2 may justify the relevance of C. timoriensis as a cholinesterase inhibitor, having more promising activity than C. grandis.
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Affiliation(s)
- Maram B. Alhawarri
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden 11800, Malaysia
- Faculty of Pharmacy, Jadara University, Irbid 21110, Jordan
| | - Roza Dianita
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden 11800, Malaysia
| | - Mira Syahfriena Amir Rawa
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden 11800, Malaysia
- USM-RIKEN Interdisciplinary Collaboration for Advanced Sciences (URICAS), Universiti Sains Malaysia, Gelugor 11800, Malaysia
| | - Toshihiko Nogawa
- USM-RIKEN Interdisciplinary Collaboration for Advanced Sciences (URICAS), Universiti Sains Malaysia, Gelugor 11800, Malaysia
- Molecular Structure Characterization Unit, Technology Platform Division, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Saitama 351-0198, Japan
| | - Habibah A. Wahab
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden 11800, Malaysia
- USM-RIKEN Interdisciplinary Collaboration for Advanced Sciences (URICAS), Universiti Sains Malaysia, Gelugor 11800, Malaysia
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Larue L, Kenzhebayeva B, Al-Thiabat MG, Jouan-Hureaux V, Mohd-Gazzali A, Wahab HA, Boura C, Yeligbayeva G, Nakan U, Frochot C, Acherar S. tLyp-1: A peptide suitable to target NRP-1 receptor. Bioorg Chem 2023; 130:106200. [PMID: 36332316 DOI: 10.1016/j.bioorg.2022.106200] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/22/2022] [Accepted: 10/06/2022] [Indexed: 11/02/2022]
Abstract
Targeting vascular endothelial growth factor receptor (VEFGR) and its co-receptor neuropilin-1 (NRP-1) is an interesting vascular strategy. tLyp-1 is a tumor-homing and penetrating peptide of 7 amino acids (CGNKRTR). It is a truncated form of Lyp-1 (CGNKRTRGC), which is known to target NRP-1 receptor, with high affinity and specificity. It is mediated by endocytosis via C-end rule (CendR) internalization pathway. The aim of this study is to evaluate the importance of each amino acid in the tLyp-1 sequence through alanine-scanning (Ala-scan) technique, during which each of the amino acid in the sequence was systematically replaced by alanine to produce 7 different analogues. In silico approach through molecular docking and molecular dynamics are employed to understand the interaction between the peptide and its analogues with the NRP-1 receptor, followed by in vitro ligand binding assay study. The C-terminal Arg is crucial in the interaction of tLyp-1 with NRP-1 receptor. Substituting this residue dramatically reduces the affinity of this peptide which is clearly seen in this study. Lys-4 is also important in the interaction, which is confirmed via the in vitro study and the MM-PBSA analysis. The finding in this study supports the CendR, in which the presence of R/K-XX-R/K motif is essential in the binding of a ligand with NRP-1 receptor. This presented work will serve as a guide in the future work pertaining the development of active targeting agent towards NRP-1 receptor.
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Affiliation(s)
- Ludivine Larue
- Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France; Université de Lorraine, CNRS, LRGP, F-54000 Nancy, France
| | - Bibigul Kenzhebayeva
- Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France; Institute of Geology and Oil-gas Business, Satbayev University, Almaty 050013, Kazakhstan
| | - Mohammad G Al-Thiabat
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | | | - Amirah Mohd-Gazzali
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Habibah A Wahab
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Cédric Boura
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France
| | - Gulzhakhan Yeligbayeva
- Institute of Geology and Oil-gas Business, Satbayev University, Almaty 050013, Kazakhstan
| | - Ulantay Nakan
- Institute of Geology and Oil-gas Business, Satbayev University, Almaty 050013, Kazakhstan
| | - Céline Frochot
- Université de Lorraine, CNRS, LRGP, F-54000 Nancy, France
| | - Samir Acherar
- Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France.
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Mazumdar P, Kashyap A, Choudhury D, Borgohain G. A Density Functional Theory and Molecular Dynamics Study of Antifolate Molecules under Physiological Conditions. ChemistrySelect 2022. [DOI: 10.1002/slct.202203588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Angarag Kashyap
- Department of Chemistry B. Borooah College Guwahati Assam 781007 India
| | - Diganta Choudhury
- Department of Chemistry B. Borooah College Guwahati Assam 781007 India
| | - Gargi Borgohain
- Department of Chemistry Cotton University Guwahati Assam 781001 India
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Naturally Occurring 8ß,13ß-kaur-15-en-17-al and Anti-Malarial Activity from Podocarpus polystachyus Leaves. Pharmaceuticals (Basel) 2022; 15:ph15070902. [PMID: 35890200 PMCID: PMC9318793 DOI: 10.3390/ph15070902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/11/2022] [Accepted: 07/15/2022] [Indexed: 02/04/2023] Open
Abstract
Despite much interest and studies toward the genus Podocarpus, the anti-malarial evaluation of Podocarpus polystachyus’s phytoconstituents remains lacking. Herein, the phytoconstituents of P. polystachyus leaves and their anti-malarial effect against Plasmodium falciparum were investigated for the first time. One new natural product, 8ß,13ß-kaur-15-en-17-al (1), along with three known compounds, 8ß,13ß-kaur-15-en-17-ol (2) and 13ß-kaur-16-ene (3), and α-tocopherol hydroquinone (4) were isolated via HR-ESI-MS and NMR analyses. Compounds 1 and 2 inhibited P. falciparum growth at 12 and 52 µM of IC50, respectively. Their anti-malarial activity was associated with the in silico P. falciparum lactate dehydrogenase (PfLDH) inhibition. Molecular docking of ligands 1 and 2 with the putative target PfLDH revealed ~−2 kcal/mol of binding energies more negative than the control. Molecular dynamic simulations (100 ns) showed equal or smaller deviation values (RMSD, RMSF, Rg) and stronger interactions of PfLDH-1 and PfLDH-2 complexes via at least one consistent H-bond than the control. Additionally, a slightly increased PfLDH H-bond profile in their interactions improved the PfLDH dynamic and structural stabilities. Overall, this study supports the relevance of 1 and 2 as plasmodial growth inhibitors with their putative anti-PfLDH activity, which could be a potential scaffold for developing anti-malarial drugs.
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Wang C, Zhang M, Shi S, Jiang Y, Fei X, Liu L, Ye D, Zhang S. Interaction mechanism of novel fluorescent antifolates targeted with folate receptors α and β via molecular docking and molecular dynamic simulations. J Mol Model 2022; 28:205. [PMID: 35780236 DOI: 10.1007/s00894-022-05210-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 06/26/2022] [Indexed: 10/17/2022]
Abstract
Eight novel fluorescent antifolates were designed and docked with folate receptors FRα and FRβ. The structures of the complexes were further calculated by molecular dynamic (MD) simulations. The binding energies were calculated by molecular docking and molecular mechanics Poisson-Boltzmann surface area (MM-PBSA) studies. The binding energy differences between FRα and FRβ (|Ebα|-|Ebβ|) values for compounds 3 and 8 were 1.3 and 1.1 kcal/mol calculated by molecular docking, and 13.9 and 10.4 kcal/mol by MM-PBSA simulation, respectively. The results indicated that compounds 3 and 8 may be the best candidates for targeted drug delivery to FRα. The binding structures, interaction residues, negatively charged pocket volume, and surface area were analyzed for all the complexes. We further calculated the root mean square displacement and secondary structural elements of the bound complexes using molecular dynamics simulations. The purpose of this study is to design novel antifolates targeted to FRα and FRβ, and to further distinguish between cancer cells and inflammation.
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Affiliation(s)
- Cuihong Wang
- School of Science, TianJin ChengJian University, Tianjin, China.
| | - Meiling Zhang
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, China
| | - Shuhui Shi
- School of Mathematics and Physics, Handan College, Handan, China
| | - Yue Jiang
- School of Science, TianJin ChengJian University, Tianjin, China
| | - Xuening Fei
- School of Science, TianJin ChengJian University, Tianjin, China.
| | - Lijuan Liu
- School of Science, TianJin ChengJian University, Tianjin, China
| | - Dan Ye
- School of Science, TianJin ChengJian University, Tianjin, China
| | - Shouchao Zhang
- School of Science, TianJin ChengJian University, Tianjin, China
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Synthesis, X-ray Single-Crystal Analysis, and Anticancer Activity Evaluation of New Alkylsulfanyl-Pyridazino[4,5-b]indole Compounds as Multitarget Inhibitors of EGFR and Its Downstream PI3K-AKT Pathway. CRYSTALS 2022. [DOI: 10.3390/cryst12030353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
The alkylation of 3,5-dihydro-4H-pyridazino[4,5-b]indole-4-thione with benzyl bromide, ethyl chloroacetate, and allyl bromide in the presence of potassium carbonate (K2CO3) yielded new alkylsulfanylpyridazino[4,5-b]indole derivatives (i.e., compounds 4–6). Hydrazinolysis of ester 6 resulted in hydrazide 7. The structure of compound 6 was verified by X-ray single-crystal analysis. Among the synthesized compounds, compound 6 exhibited the most promising cytotoxicity toward MCF-7 cells with an IC50 value of 12 µM. It showed potential inhibition activity toward EGFR, PI3K, and AKT in MCF-7 cells, with 0.26-, 0.49-, and 0.31-fold reductions in concentration compared to an untreated control. Additionally, it showed apoptosis-inducing activity in MCF-7 cells (47.98-fold); overall apoptosis increased to 38.87% compared to 0.81% in the untreated control, which disrupted the cell cycle at pre-G1 and S phases. Moreover, compound 6 exhibited good binding affinities toward the tested proteins (EGFR, PI3K, and AKT) and had binding energies ranging from −15.87 to −24.87 Kcal/mol. It also formed good interactions with essential amino acids inside the binding sites. Hence, compound 6 is recommended as an anti-breast cancer chemotherapeutic due to its effects on the EGFR-PI3K-AKT pathway.
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Targeting nanoparticles to malignant tumors. Biochim Biophys Acta Rev Cancer 2022; 1877:188703. [DOI: 10.1016/j.bbcan.2022.188703] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/01/2022] [Accepted: 02/21/2022] [Indexed: 12/12/2022]
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Al-Thiabat MG, Gazzali AM, Mohtar N, Murugaiyah V, Kamarulzaman EE, Yap BK, Rahman NA, Othman R, Wahab HA. Conjugated β-Cyclodextrin Enhances the Affinity of Folic Acid towards FRα: Molecular Dynamics Study. Molecules 2021; 26:5304. [PMID: 34500740 PMCID: PMC8434473 DOI: 10.3390/molecules26175304] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 12/02/2022] Open
Abstract
Drug targeting is a progressive area of research with folate receptor alpha (FRα) receiving significant attention as a biological marker in cancer drug delivery. The binding affinity of folic acid (FA) to the FRα active site provides a basis for recognition of FRα. In this study, FA was conjugated to beta-cyclodextrin (βCD) and subjected to in silico analysis (molecular docking and molecular dynamics (MD) simulation (100 ns)) to investigate the affinity and stability for the conjugated system compared to unconjugated and apo systems (ligand free). Docking studies revealed that the conjugated FA bound into the active site of FRα with a docking score (free binding energy < -15 kcal/mol), with a similar binding pose to that of unconjugated FA. Subsequent analyses from molecular dynamics (MD) simulations, root mean square deviation (RMSD), root mean square fluctuation (RMSF), and radius of gyration (Rg) demonstrated that FA and FA-βCDs created more dynamically stable systems with FRα than the apo-FRα system. All systems reached equilibrium with stable RMSD values ranging from 1.9-2.4 Å and the average residual fluctuation values of the FRα backbone atoms for all residues (except for terminal residues ARG8, THR9, THR214, and LEU215) were less than 2.1 Å with a consistent Rg value of around 16.8 Å throughout the MD simulation time (0-100 ns). The conjugation with βCD improved the stability and decreased the mobility of all the residues (except residues 149-151) compared to FA-FRα and apo-FRα systems. Further analysis of H-bonds, binding free energy (MM-PBSA), and per residue decomposition energy revealed that besides APS81, residues HIS20, TRP102, HIS135, TRP138, TRP140, and TRP171 were shown to have more favourable energy contributions in the holo systems than in the apo-FRα system, and these residues might have a direct role in increasing the stability of holo systems.
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Affiliation(s)
- Mohammad G. Al-Thiabat
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
- Pharmaceutical Design and Simulation (PHDS) Laboratory, School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia
| | - Amirah Mohd Gazzali
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
| | - Noratiqah Mohtar
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
| | - Vikneswaran Murugaiyah
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
| | - Ezatul Ezleen Kamarulzaman
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
| | - Beow Keat Yap
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
| | - Noorsaadah Abd Rahman
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia;
| | - Rozana Othman
- Center for Natural Products Research and Drug Discovery (CENAR), Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Habibah A. Wahab
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia; (M.G.A.-T.); (A.M.G.); (N.M.); (V.M.); (E.E.K.); (B.K.Y.)
- Pharmaceutical Design and Simulation (PHDS) Laboratory, School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Malaysia
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