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Brice Landry K, Tariq S, Malik A, Sufyan M, Ashfaq UA, Ijaz B, Shahid AA. Berberis lyceum and Fumaria indica: in vitro cytotoxicity, antioxidant activity, and in silico screening of their selected phytochemicals as novel hepatitis C virus nonstructural protein 5A inhibitors. J Biomol Struct Dyn 2021; 40:7829-7851. [PMID: 33764266 DOI: 10.1080/07391102.2021.1902395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Berberis lyceum and Fumaria indica are two Pakistani indigenous herbal medicines used to treat liver infections, including hepatitis C virus (HCV). This study aimed to evaluate the cytotoxicity, and antioxidant activity of these plant extracts and computationally screen their selected phytoconstituents as HCV NS5A inhibitors. The viability of HepG2 cells was assessed 24 h and 48 h post-treatment using colorimetric and dye exclusion methods. Antioxidant properties were examined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH), reducing power, and total antioxidant capacity assays. Seventeen known phytochemicals identified from each plant were docked into the active binding site of HCV NS5A protein. The top hit ligands were analyzed for their druglikeness properties and the indices of absorption, distribution, metabolism, elimination, and toxicity (ADMET). The results showed that both plant extracts were non-toxic (CC50 > 200 µg/ml). The IC50 values of DPPH-radical scavenging activity were 51.02 ± 0.94 and 62.91 ± 1.85 µg/ml for B. lyceum and F. indica, respectively. They also exhibited reducing power and total antioxidant capacity.The phytochemicals were identified as potent HCV NS5A inhibitors with good druglikeness and ADMET properties. Six of the docked phytochemicals exhibited higher binding scores (-17.9 to -19.2 kcal/mol) with HCV NS5A protein than the standard drug, daclatasvir (-17.2 kcal/mol). Molecular dynamics (MD) simulation confirmed the stability of two compounds, berbamine and paprafumine at 100 ns with active site of HCV NS5A protein. The identified compounds through molecular docking and MD simulation could have potential as HCV NS5A inhibitor after further validation. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Koloko Brice Landry
- Laboratory of Applied and Functional Genomics, Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Somayya Tariq
- Laboratory of Applied and Functional Genomics, Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Ayesha Malik
- Laboratory of Applied and Functional Genomics, Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Sufyan
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Bushra Ijaz
- Laboratory of Applied and Functional Genomics, Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Ahmad Ali Shahid
- Laboratory of Applied and Functional Genomics, Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
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Zacharie N, Dieudonné ML, Modeste WN, Ide NM, Landry KB, Emma B, Noël E, Armel M, Yebga T, G MPV, Camille NND. Potential activity of Aframomum daniellii (Zingiberaceae) dry seeds: A case study of its action mechanism on the Wistar rat strain with testicular deficiency. Biomed Pharmacother 2020; 131:110759. [PMID: 33152923 DOI: 10.1016/j.biopha.2020.110759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/11/2020] [Accepted: 09/13/2020] [Indexed: 11/24/2022] Open
Abstract
This work was undertaken to evaluate the biological activity of the aqueous extract of the dry seeds of Aframomum daniellii seeds on the copulatory performance of rats with testicular deficiency. Hypogonadal adult male rats (30) were divided into 6 groups: group I received distilled water (10 ml/kg), group II received sildenafil citrate (5 mg/kg), group III received intramuscular injections of testosterone enanthate (3. 6 mg/kg), group IV, V, and VI received the aqueous extract of A. daniellii at the respective doses of 100, 200, and 400 mg/kg/po/day for 14 days. The copulatory performance of the animals were assessed on days 1, 7 and 14 through the following copulation parameters: Mount, intromission, and ejaculation latency (ML, IL, and EL) and frequency (MF, IF and EF), average interval of copulation (AIC) and post-ejaculatory interval (PEI)). We noticed a significant decrease of ML (p < 0.05), IL (p < 0.01), EL (p < 0.001) and the increase of MF, IF and EF (p < 0.01) particularly at doses of 100 and 400 mg/kg when compared to group I and II. In addition, we noticed a significant increase of AIC from day 7 (p < 0.05) to day 14 (p < 0.001) at the same two doses while the PEI significantly decreased from the 1st (p < 0.01) to the 14th day (p < 0.001) when compared to group I and II. These findings demonstrated that A. daniellii aqueous extract of seeds enhanced pro-sexual potential and pro-sexual desire in male rats with testicular deficiency.
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Affiliation(s)
- Nde Zacharie
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Massoma Lembè Dieudonné
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon.
| | - Wankeu Nya Modeste
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Ngaha Marie Ide
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Koloko Brice Landry
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Bend Emma
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Etaga Noël
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Mbock Armel
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Toham Yebga
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Mboumwa Paul Valerie G
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
| | - Nyonseu Nzeubang Doriane Camille
- Laboratory of Biology and Physiology of Animal Organisms, Faculty of Sciences of Douala University, PO Box: 24157, Douala, Cameroon
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Khalid H, Landry KB, Ijaz B, Ashfaq UA, Ahmed M, Kanwal A, Froeyen M, Mirza MU. Discovery of novel Hepatitis C virus inhibitor targeting multiple allosteric sites of NS5B polymerase. Infect Genet Evol 2020; 84:104371. [PMID: 32485331 DOI: 10.1016/j.meegid.2020.104371] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 05/13/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023]
Abstract
HCV is a viral infection posing a severe global threat when left untreated progress to end-stage liver disease, including cirrhosis and HCC. The NS5B polymerase of HCV is the most potent target that harbors four allosteric binding sites that could interfere with the HCV infection. We present the discovery of a novel synthetic compound that harbors the potential of NS5B polymerase inhibition. All eight compounds belonging to the benzothiazine family of heterocycles displayed no cellular cytotoxicity in HepG2 cells at nontoxic dose concentration (200 μM). Subsequently, among eight compounds of the series, merely compound 5b exhibited significant inhibition of the expression of the HCV NS5B gene as compared to DMSO control in semi-quantitative PCR. Based on our western blot result, 5b at the range of 50, 100 and 200 μM induced 20, 40, and 70% inhibition of NS5B protein respectively. To estimate the binding potential, 5b was docked at respective allosteric sites followed by molecular dynamics (MD) simulations for a period of 20 ns. In addition, binding free energy calculation by MM-GB/PBSA method revealed a conserved interaction profile of residues lining the allosteric sites in agreement with the reported NS5B co-crystallized inhibitors. The presented results provide important information about a novel compound 5b which may facilitate the the discovery of novel inhibitors that tends to target multiple sites on NS5B polymerase.
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Affiliation(s)
- Hina Khalid
- Department of Bioinformatics and Biotechnology, Government College University, 38000 Faisalabad, Pakistan
| | - Koloko Brice Landry
- Center of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Bushra Ijaz
- Center of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, 38000 Faisalabad, Pakistan.
| | - Matloob Ahmed
- Department of Chemistry, Government College University, 38000 Faisalabad, Pakistan
| | - Afshan Kanwal
- Department of Chemistry, Government College University, 38000 Faisalabad, Pakistan
| | - Matheus Froeyen
- Department of Pharmaceutical Sciences, REGA Institute for Medical Research, Medicinal Chemistry, University of Leuven, 3000 Leuven, Belgium
| | - Muhammad Usman Mirza
- Department of Pharmaceutical Sciences, REGA Institute for Medical Research, Medicinal Chemistry, University of Leuven, 3000 Leuven, Belgium
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