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Kamel EM, Aba Alkhayl FF, Alqhtani HA, Bin-Jumah M, Rudayni HA, Lamsabhi AM. Bridging in silico and in vitro perspectives to unravel molecular mechanisms underlying the inhibition of β-glucuronidase by coumarins from Hibiscus trionum. Biophys Chem 2024; 313:107304. [PMID: 39079275 DOI: 10.1016/j.bpc.2024.107304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 06/27/2024] [Accepted: 07/25/2024] [Indexed: 08/21/2024]
Abstract
Unraveling the intricacies of β-glucuronidase inhibition is pivotal for developing effective strategies in applications specific to gastrointestinal health and drug metabolism. Our study investigated the efficacy of some Hibiscus trionum phytochemicals as β-glucuronidase inhibitors. The results showed that cleomiscosin A and mansonone H emerged as the most potent inhibitors, with IC50 values of 3.97 ± 0.35 μM and 10.32 ± 1.85 μM, respectively. Mechanistic analysis of β-glucuronidase inhibition indicated that cleomiscosin A and the reference drug EGCG displayed a mixed inhibition mode against β-glucuronidase, while mansonone H exhibited noncompetitive inhibition against β-glucuronidase. Docking studies revealed that cleomiscosin A and mansonone H exhibited the lowest binding affinities, occupying the same site as EGCG, and engaged significant key residues in their binding mechanisms. Using a 30 ns molecular dynamics (MD) simulation, we explored the interaction dynamics of isolated compounds with β-glucuronidase. Analysis of various MD parameters showed that cleomiscosin A and mansonone H exhibited consistent trajectories and significant energy stabilization with β-glucuronidase. These computational insights complemented experimental findings, underscoring the potential of cleomiscosin A and mansonone H as β-glucuronidase inhibitors.
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Affiliation(s)
- Emadeldin M Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Faris F Aba Alkhayl
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, 51452 Buraydah, Saudi Arabia
| | - Haifa A Alqhtani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh 11671, Saudi Arabia
| | - May Bin-Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh 11671, Saudi Arabia
| | - Hassan A Rudayni
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC Cantoblanco, 28049 Madrid, Spain; Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Alqhtani HA, Othman SI, Aba Alkhayl FF, Altoom NG, Lamsabhi AM, Kamel EM. Unraveling the mechanism of carbonic anhydrase IX inhibition by alkaloids from Ruta chalepensis: A synergistic analysis of in vitro and in silico data. Biochem Biophys Res Commun 2024; 733:150685. [PMID: 39270414 DOI: 10.1016/j.bbrc.2024.150685] [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: 07/25/2024] [Revised: 08/22/2024] [Accepted: 09/09/2024] [Indexed: 09/15/2024]
Abstract
Due to the pivotal role of carbonic anhydrase IX (CA IX) in pathological conditions, there's a pressing need for novel inhibitors to improve patient outcomes and clinical management. Herein, we investigated the inhibitory efficacy of six alkaloids from Ruta chalepensis against CA IX through in vitro inhibition assay and computational modeling. Skimmianine and maculosidine displayed significant inhibitory activity in vitro, with low IC50 values of 105.2 ± 3.2 and 295.7 ± 14.1 nM, respectively. Enzyme kinetics analyses revealed that skimmianine exhibited a mixed inhibition mode, contrasting with the noncompetitive inhibition mechanism observed for the reference drug (acetazolamide), as indicated by intersecting lines in the Lineweaver-Burk plots. The findings of docking calculations revealed that skimmianine and maculosidine exhibited extensive polar interactions with the enzyme. These alkaloids demonstrate substantial binding interactions and occupy identical binding site as acetazolamide, thereby enhancing their efficacy as inhibitors of CA IX. Utilizing a 100 ns molecular dynamics (MD) simulation, the dynamic interactions between isolated alkaloids and CA IX were intensively assessed. Analysis of diverse MD parameters revealed that skimmianine and maculosidine displayed consistent trajectories and notable energy stabilization during their interaction with CA IX. The findings of MM/PBSA analysis depicted the minimum binding free energy for skimmianine and maculosidine. In addition, the Potential Energy Landscape (PEL) analysis revealed distinct and stable conformational states for the CA IX-ligand complexes, with Skimmianine showing the most stable and lowest energy configuration. These computational findings align with experimental results, emphasizing the potential efficacy of skimmianine and maculosidine as inhibitors of CA IX.
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Affiliation(s)
- Haifa A Alqhtani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh, 11671, Saudi Arabia
| | - Sarah I Othman
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh, 11671, Saudi Arabia
| | - Faris F Aba Alkhayl
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, 51452 Buraydah, Saudi Arabia
| | - Naif G Altoom
- Department of Biology, King Khalid Military Academy, Riyadh 11459, Saudi Arabia
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC Cantoblanco, 28049 Madrid, Spain; Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Emadeldin M Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
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Kamel EM, Alkhayl FFA, Alqhtani HA, Bin-Jumah M, Rudayni HA, Lamsabhi AM. Dissecting molecular mechanisms underlying the inhibition of β-glucuronidase by alkaloids from Hibiscus trionum: Integrating in vitro and in silico perspectives. Comput Biol Med 2024; 180:108969. [PMID: 39089106 DOI: 10.1016/j.compbiomed.2024.108969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/30/2024] [Accepted: 07/29/2024] [Indexed: 08/03/2024]
Abstract
β-Glucuronidase, a crucial enzyme in drug metabolism and detoxification, represents a promising target for therapeutic intervention due to its potential to modulate drug pharmacokinetics and enhance therapeutic efficacy. Herein, we assessed the inhibitory potential of phytochemicals from Hibiscus trionum against β-glucuronidase. Grossamide and grossamide K emerged as the most potent β-glucuronidase inhibitors with IC50 values of 0.73 ± 0.03 and 1.24 ± 0.03 μM, respectively. The investigated alkaloids effectively inhibited β-glucuronidase-catalyzed PNPG hydrolysis through a noncompetitive inhibition mode, whereas steppogenin displayed a mixed inhibition mechanism. Molecular docking analyses highlighted grossamide and grossamide K as inhibitors with the lowest binding free energy, all compounds successfully docked into the same main binding site occupied by the reference drug Epigallocatechin gallate (EGCG). We explored the interaction dynamics of isolated compounds with β-glucuronidase through a 200 ns molecular dynamics (MD) simulation. Analysis of various MD parameters revealed that grossamide and grossamide K maintained stable trajectories and demonstrated significant energy stabilization upon binding to β-glucuronidase. Additionally, these compounds exhibited the lowest average interaction energies with the target enzyme. The MM/PBSA calculations further supported these findings, showing the lowest binding free energies for grossamide and grossamide K. These computational results are consistent with experimental data, suggesting that grossamide and grossamide K could be potent inhibitors of β-glucuronidase.
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Affiliation(s)
- Emadeldin M Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt.
| | - Faris F Aba Alkhayl
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, 51452, Buraydah, Saudi Arabia
| | - Haifa A Alqhtani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh, 11671, Saudi Arabia
| | - May Bin-Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh, 11671, Saudi Arabia
| | - Hassan A Rudayni
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University, Riyadh, 11623, Saudi Arabia
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC Cantoblanco, 28049, Madrid, Spain; Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
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Kamel EM, Maodaa S, Al-Shaebi EM, Lamsabhi AM. Mechanistic insights into the metabolic pathways of vanillin: unraveling cytochrome P450 interaction mechanisms and implications for food safety. Org Biomol Chem 2024; 22:6561-6574. [PMID: 39082794 DOI: 10.1039/d4ob00973h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Vanillin, a key flavor compound found in vanilla beans, is widely used in the food and pharmaceutical industries for its aromatic properties and potential therapeutic benefits. This study presents a comprehensive quantum chemical analysis to elucidate the interaction mechanisms of vanillin with CYP450 enzymes, with a focus on mechanism-based inactivation. Three potential inactivation pathways were evaluated: aldehyde deformylation, methoxy dealkylation, and acetal formation. Aldehyde deformylation was identified as the most energy-efficient, involving the removal of the aldehyde group from vanillin and leading to the formation of benzyne intermediates that could react with the iron porphyrin moiety of CYP450, potentially resulting in enzyme inactivation. Further investigation into the interactions of vanillin with CYP2E1 and CYP1A2 was conducted using molecular docking and molecular dynamics (MD) simulation. The docking analyses supported the findings from DFT studies, wherein vanillin revealed high binding affinities with the studied isozymes. Moreover, vanillin occupied the main binding site in both isozymes, as evidenced by the inclusion of the heme moiety in their binding mechanisms. Employing a 100 ns molecular dynamics simulation, we scrutinized the interaction dynamics between vanillin and the two isozymes of CYP450. The assessment of various MD parameters along with interaction energies revealed that vanillin exhibited stable trajectories and substantial energy stabilization during its interaction with both CYP450 isozymes. These insights can guide future research and ensure the safe application of vanillin, especially in scenarios where it may interact with CYP450 enzymes.
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Affiliation(s)
- Emadeldin M Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Saleh Maodaa
- Department of Zoology, College of Science, King Saud University, PO Box-2455, Riyadh, 11451, Saudi Arabia
| | - Esam M Al-Shaebi
- Department of Zoology, College of Science, King Saud University, PO Box-2455, Riyadh, 11451, Saudi Arabia
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Ahmed SA, Kamel EM, Mahmoud AM, Nasr HMD, Hassan HM, Alanazi MM, Rateb ME, Hozayen WG, Ahmed SA. Phytochemical Analysis, and Antioxidant and Hepatoprotective Activities of Chamaerops humilis L. Leaves; A Focus on Xanthine Oxidase. Chem Biodivers 2024:e202400865. [PMID: 38867399 DOI: 10.1002/cbdv.202400865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/14/2024]
Abstract
Chamaerops humilis L. is clumping palm of the family Arecaceae with promising health-promoting effects. Parts of this species are utilized as food and employed in folk medicine to treat several disorders. This study investigated the phytochemical constituents of C. humilis leaves and their antioxidant and xanthine oxidase (XO) inhibitory activities in vitro and in vivo in acetaminophen (APAP)-induced hepatotoxicity in rats. The chemical structure of the isolated phytochemicals was determined using data obtained from UV, MS, IR, and 1H-, 13C-NMR spectroscopic tools as well as comparison with authentic markers. Eleven compounds, including tricin 7-O-β-rutinoside, vicenin, tricin, astragalin, borassoside D, pregnane-3,5,6,16-tetrol, oleanolic acid, β-sitosterol and campesterol were isolated from C. humilis ethanolic extract (CHEE). CHEE and the butanol, n-hexane, and dichloromethane fractions exhibited in vitro radical scavenging and XO inhibitory efficacies. The computational findings revealed the tendency of the isolated compounds towards the active site of XO. In vivo, CHEE ameliorated liver function markers and prevented tissue injury induced by APAP in rats. CHEE suppressed hepatic XO, decreased serum uric acid and liver malondialdehyde (MDA), and enhanced reduced glutathione (GSH), superoxide dismutase (SOD), and catalase in APAP-treated rats. CHEE ameliorated serum tumor necrosis factor alpha (TNF-α) and interleukin (IL)-1β in APAP-treated rats. Thus, C. humilis is rich in beneficial phytochemicals that possess binding affinity towards XO. C. humilis exhibited potent in vitro antioxidant and XO inhibitory activities, and prevented APAP hepatotoxicity by attenuating tissue injury, oxidative stress and inflammation.
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Affiliation(s)
- Shimaa A Ahmed
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Seuf, 62514, Egypt
| | - Emadeldin M Kamel
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Seuf, 62514, Egypt
| | - Ayman M Mahmoud
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, M1 5GD, UK
| | - Hamdi M D Nasr
- Department of Chemistry, Faculty of Science, Al-Azhar University (Assiut), Assiut, 71524, Egypt
| | - Hossam M Hassan
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Mohammed M Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mostafa E Rateb
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Walaa G Hozayen
- Department of Biochemistry, Faculty of Science, Beni-Suef University, Beni-Seuf, 62514, Egypt
| | - Sayed A Ahmed
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Seuf, 62514, Egypt
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Alruhaimi RS, Mahmoud AM, Elbagory I, Ahmeda AF, El-Bassuony AA, Lamsabhi AM, Kamel EM. Unveiling the tyrosinase inhibitory potential of phenolics from Centaurium spicatum: Bridging in silico and in vitro perspectives. Bioorg Chem 2024; 147:107397. [PMID: 38691905 DOI: 10.1016/j.bioorg.2024.107397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/16/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
Phenolics, abundant in plants, constitute a significant portion of phytoconstituents consumed in the human diet. The phytochemical screening of the aerial parts of Centaurium spicatum led to the isolation of five phenolics. The anti-tyrosinase activities of the isolated compounds were assessed through a combination of in vitro experiments and multiple in silico approaches. Docking and molecular dynamics (MD) simulation techniques were utilized to figure out the binding interactions of the isolated phytochemicals with tyrosinase. The findings from molecular docking analysis revealed that the isolated phenolics were able to bind effectively to tyrosinase and potentially inhibit substrate binding, consequently diminishing the catalytic activity of tyrosinase. Among isolated compounds, cichoric acid displayed the lowest binding energy and the highest extent of polar interactions with the target enzyme. Analysis of MD simulation trajectories indicated that equilibrium was reached within 30 ns for all complexes of tyrosinase with the isolated phenolics. Among the five ligands studied, cichoric acid exhibited the lowest interaction energies, rendering its complex with tyrosinase the most stable. Considering these collective findings, cichoric acid emerges as a promising candidate for the design and development of a potential tyrosinase inhibitor. Furthermore, the in vitro anti-tyrosinase activity assay unveiled significant variations among the isolated compounds. Notably, cichoric acid exhibited the most potent inhibitory effect, as evidenced by the lowest IC50 value (7.92 ± 1.32 µg/ml), followed by isorhamnetin and gentiopicrin. In contrast, sinapic acid demonstrated the least inhibitory activity against tyrosinase, with the highest IC50 value. Moreover, cichoric acid exhibited a mixed inhibition mode against the hydrolysis of l-DOPA catalyzed by tyrosinase, with Ki value of 1.64. Remarkably, these experimental findings align well with the outcomes of docking and MD simulations, underscoring the consistency and reliability of our computational predictions with the actual inhibitory potential observed in vitro.
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Affiliation(s)
- Reem S Alruhaimi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Ayman M Mahmoud
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M1 5GD, UK; Molecular Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Ibrahim Elbagory
- Department of Pharmaceutics, Faculty of Pharmacy, Northern Border University, Rafha 76321, Saudi Arabia
| | - Ahmad F Ahmeda
- Department of Basic Medical Sciences, College of Medicine, Ajman University, Ajman 346, United Arab Emirates; Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman 346, United Arab Emirates
| | - Ashraf A El-Bassuony
- Organic Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC Cantoblanco, Madrid 28049, Spain; Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Emadeldin M Kamel
- Organic Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
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Alruhaimi RS, Mostafa-Hedeab G, Abduh MS, Bin-Ammar A, Hassanein EHM, Kamel EM, Mahmoud AM. A flavonoid-rich fraction of Euphorbia peplus attenuates hyperglycemia, insulin resistance, and oxidative stress in a type 2 diabetes rat model. Front Pharmacol 2023; 14:1204641. [PMID: 37397470 PMCID: PMC10311489 DOI: 10.3389/fphar.2023.1204641] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/01/2023] [Indexed: 07/04/2023] Open
Abstract
Background: Type 2 diabetes (T2D) is a metabolic disorder characterized by insulin resistance (IR) and hyperglycemia. Plants are valuable sources of therapeutic agents for the management of T2D. Euphorbia peplus has been widely used as a traditional medicine for the treatment of various diseases, but its beneficial role in T2D has not been fully explored. Methods: The anti-diabetic efficacy of E. peplus extract (EPE) was studied using rats with T2D induced by high-fat diet (HFD) and streptozotocin (STZ). The diabetic rats received 100, 200, and 400 mg/kg EPE for 4 weeks. Results: Phytochemical fractionation of the aerial parts of E. peplus led to the isolation of seven known flavonoids. Rats with T2D exhibited IR, impaired glucose tolerance, decreased liver hexokinase and glycogen, and upregulated glycogen phosphorylase, glucose-6-phosphatase (G-6-Pase), and fructose-1,6-bisphosphatase (F-1,6-BPase). Treatment with 100, 200, and 400 mg/kg EPE for 4 weeks ameliorated hyperglycemia, IR, liver glycogen, and the activities of carbohydrate-metabolizing enzymes. EPE attenuated dyslipidemia, serum transaminases, tumor necrosis factor (TNF)-α, interleukin (IL)-1β and liver lipid accumulation, nuclear factor (NF)-κB p65, and lipid peroxidation, nitric oxide and enhanced antioxidants. All EPE doses upregulated serum adiponectin and liver peroxisome proliferator-activated receptor γ (PPARγ) in HFD/STZ-induced rats. The isolated flavonoids showed in silico binding affinity toward hexokinase, NF-κB, and PPARγ. Conclusion: E. peplus is rich in flavonoids, and its extract ameliorated IR, hyperglycemia, dyslipidemia, inflammation and redox imbalance, and upregulated adiponectin and PPARγ in rats with T2D.
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Affiliation(s)
- Reem S. Alruhaimi
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Gomaa Mostafa-Hedeab
- Pharmacology Department, Medical College, Jouf University, Sakaka, Saudi Arabia
- Pharmacology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Maisa Siddiq Abduh
- Immune Responses in Different Diseases Research Group, Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Albandari Bin-Ammar
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Emad H. M. Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Emadeldin M. Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Ayman M. Mahmoud
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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Mahmoud HA, Kamel EM, Mahmoud AM, Alruhaimi RS, El-Zanaty AM, Abd El-Salam HM, Abdel-Gawad OF. Multitargeted molecular modelling of alginic acid modified with 4-aminophenol dopped with silver nanoparticles as a potent cytotoxic agent. Heliyon 2023; 9:e17106. [PMID: 37484376 PMCID: PMC10361328 DOI: 10.1016/j.heliyon.2023.e17106] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 07/25/2023] Open
Abstract
The activity of alginic acid as a cytotoxic agent was improved by structure modification using 4-aminophenol (4-AP) through condensation and polymerization processes. Then, silver nanoparticles were employed through doping to further enhance the cytotoxic activity of the modified polymer. The structure of the prepared materials was characterized by FT-IR, 1HNMR, UV spectroscopy, X-ray diffraction, and electron microscopy, and the thermal behavior of all synthesized materials was intensively studied. The cytotoxicity of the prepared compounds against cell lines of human hepatocellular (HepG-2) and lung (A-549) carcinomas was investigated. Alginic acid modified with 4-AP (Alg-4-AP3) showed the highest activity against HepG-2 and A-549 among all tested materials with IC50 values of 3.0 ± 0.19 μg/mL and 3.63 ± 0.23 μg/mL, respectively. Multitargeted molecular docking was employed to explore the binding modes of our compounds with the receptors EGFR, HER2, and VEGFR 2. The results revealed the inhibitory activity of our tested compounds against the proposed protein receptors, findings coincided with the in vitro results. In conclusion, the modification of alginic acid with 4-AP improved its cytotoxic activity against HepG-2 and A-549 cancer cells. In addition, doping the new materials with silver nanoparticles (AgNPs) further enhanced the cytotoxic activity.
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Affiliation(s)
- Haneen A. Mahmoud
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Emadeldin M. Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Ayman M. Mahmoud
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, M1 5GD, UK
| | - Reem S. Alruhaimi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, 11671, Saudi Arabia
| | - Ali M. El-Zanaty
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
| | | | - Omayma F. Abdel-Gawad
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
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ALRashdi BM, Elgebaly HA, Germoush MO, Qarmush MM, Azab MS, Alruhaimi RS, Ahmeda AF, Abukhalil MH, Kamel EM, Arab HH, Alzoghaibi MA, Alotaibi MF, Mahmoud AM. A flavonoid-rich fraction of Monolluma quadrangula inhibits xanthine oxidase and ameliorates potassium oxonate-induced hyperuricemia in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:63520-63532. [PMID: 35461413 DOI: 10.1007/s11356-022-20274-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Hyperuricemia represents a risk factor for the progression of chronic kidney disease. Oxidative stress and inflammation are implicated in the mechanisms underlying hyperuricemia-mediated kidney injury. Monolluma quadrangula possesses several beneficial effects; however, its effect on hyperuricemia has not been investigated. This study evaluated the renoprotective and xanthine oxidase (XO) inhibitory activity of M. quadrangula in hyperuricemic rats. Phytochemical investigation revealed the presence of six known flavonoid isolated for the first time from this species. The rats received M. quadrangula extract (MQE) and potassium oxonate (PO) for 7 days. In vitro assays showed the radical scavenging and XO inhibitory activities of MQE, and in silico molecular docking revealed the inhibitory activity of the isolated flavonoids towards XO. Hyperuricemic rats showed elevated serum uric acid, creatinine, urea, and XO activity, and renal pro-inflammatory cytokines, MDA and NO, and decreased GSH, SOD, and catalase. MQE ameliorated serum uric acid, urea, creatinine, and XO activity, and renal pro-inflammatory cytokines. In addition, MQE attenuated renal oxidative stress, enhanced antioxidants, downregulated URAT-1, and GLUT-9 and upregulated OAT-1 in PO-induced rats. In conclusion, M. quadrangula attenuated hyperuricemia and kidney impairment by suppressing XO activity, oxidative stress and inflammation, and modulating urate transporters.
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Affiliation(s)
- Barakat M ALRashdi
- Biology Department, College of Science, Jouf University, Sakakah, Saudi Arabia
| | - Hassan A Elgebaly
- Biology Department, College of Science, Jouf University, Sakakah, Saudi Arabia
| | - Mousa O Germoush
- Biology Department, College of Science, Jouf University, Sakakah, Saudi Arabia
| | | | - Mona S Azab
- Biology Department, College of Science, Jouf University, Sakakah, Saudi Arabia
- Zoology Department, Faculty of Science, Benha University, Benha, Egypt
| | - Reem S Alruhaimi
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Ahmad F Ahmeda
- Department of Basic Medical Sciences, College of Medicine, Ajman University, Ajman, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
| | - Mohammad H Abukhalil
- Department of Medical Analysis, Princess Aisha Bint Al-Hussein College of Nursing and Health Sciences, Al-Hussein Bin Talal University, Ma'an, Jordan
| | - Emadeldin M Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Hany H Arab
- Department of Pharmacology and Toxicology, College of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Mohammed A Alzoghaibi
- Physiology Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed F Alotaibi
- Physiology Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ayman M Mahmoud
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Salah Salim St, Beni-Suef, 62514, Egypt.
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK.
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