1
|
Ho WY, Shen ZH, Chen Y, Chen TH, Lu X, Fu YS. Therapeutic implications of quercetin and its derived-products in COVID-19 protection and prophylactic. Heliyon 2024; 10:e30080. [PMID: 38765079 PMCID: PMC11098804 DOI: 10.1016/j.heliyon.2024.e30080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 05/21/2024] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel human coronavirus, which has triggered a global pandemic of the coronavirus infectious disease 2019 (COVID-19). Outbreaks of emerging infectious diseases continue to challenge human health worldwide. The virus conquers human cells through the angiotensin-converting enzyme 2 receptor-driven pathway by mostly targeting the human respiratory tract. Quercetin is a natural flavonoid widely represented in the plant kingdom. Cumulative evidence has demonstrated that quercetin and its derivatives have various pharmacological properties including anti-cancer, anti-hypertension, anti-hyperlipidemia, anti-hyperglycemia, anti-microbial, antiviral, neuroprotective, and cardio-protective effects, because it is a potential treatment for severe inflammation and acute respiratory distress syndrome. Furthermore, it is the main life-threatening condition in patients with COVID-19. This article provides a comprehensive review of the primary literature on the predictable effectiveness of quercetin and its derivatives docked to multi-target of SARS-CoV-2 and host cells via in silico and some of validation through in vitro, in vivo, and clinically to fight SARS-CoV-2 infections, contribute to the reduction of inflammation, which suggests the preventive and therapeutic latency of quercetin and its derived-products against COVID-19 pandemic, multisystem inflammatory syndromes (MIS), and long-COVID.
Collapse
Affiliation(s)
- Wan-Yi Ho
- Department of Anatomy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Zi-Han Shen
- Department of Clinical Medicine, Xiamen Medical College, Xiamen, 361023, Fujian, China
| | - Yijing Chen
- Department of Dentisty, Xiamen Medical College, Xiamen, 361023, Fujian, China
| | - Ting-Hsu Chen
- Graduate Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan
| | - XiaoLin Lu
- Anatomy Section, Department of Basic Medical Science, Xiamen Medical College, Xiamen, 361023, Fujian, China
| | - Yaw-Syan Fu
- Institute of Respiratory Disease, Department of Basic Medical Science, Xiamen Medical College, Xiamen, 361023, Fujian, China
- Anatomy Section, Department of Basic Medical Science, Xiamen Medical College, Xiamen, 361023, Fujian, China
| |
Collapse
|
2
|
Bhattacharya K, Khanal P, Patil VS, Dwivedi PSR, Chanu NR, Chaudhary RK, Deka S, Chakraborty A. Computational pharmacology profiling of borapetoside C against melanoma. J Biomol Struct Dyn 2024; 42:3233-3248. [PMID: 37203884 DOI: 10.1080/07391102.2023.2213333] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
Melanoma,also known as a 'black tumor', begins in the melanocytes when cells (that produce pigment) grows out of control. Immunological dysregulation, which raises the risk for multiple illnesses, including melanoma, may be influenced by stress tiggered through viral infection, long term effects of ultraviolet radiation, environmental pollutants etc. Borapetoside C is one of the phytoconstituents from Tinospora crispa, and its biological source has been reported for its antistress property. Network pharmacology and KEGG pathway analysis of borapetoside C-regulated proteins were conducted to identify the hub genes involved in melanoma development. Further, a molecular docking was performed between borapetoside C and targets involved in melanoma. Further, the top 3 complexes were selected based on the binding energy to conduct molecular dynamics simulations to evaluate the stability of ligand-protein complex followed by principal component analysis and dynamic cross-correlation matrix. In addition, borapetoside C was also screened for its pharmacokinetics and toxicity profile. Network Pharmacology studies and KEGG pathway analysis revealed 8 targets involved in melanoma. Molecular docking between borapetoside C and targets involved in melanoma identified 3 complexes with minimum binding i.e. borapetoside C- MAP2K1, MMP9, and EGFR. Further, molecular dynamics simulations showed a stable complex of borapetoside C with MMP9 and EGFR. The present study suggested that borapetoside C may target MMP9 and EGFR to possess an anti-melanoma property. This finding can be useful in developing a novel therapeutic agent against melanoma from a natural source.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Kunal Bhattacharya
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam, India
- Royal School of Pharmacy, The Assam Royal Global University, Guwahati, Assam, India
| | - Pukar Khanal
- Department of Pharmacology, NGSM Institute of Pharmaceutical Sciences (NGSMIPS), Nitte (Deemed to be University), Mangalore, India
| | - Vishal S Patil
- KLE College of Pharmacy, KLE Academy of Higher Education and Research, Belagavi, India
| | - Prarambh S R Dwivedi
- Department of Pharmacology, NGSM Institute of Pharmaceutical Sciences (NGSMIPS), Nitte (Deemed to be University), Mangalore, India
| | - Nongmaithem Randhoni Chanu
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam, India
- Faculty of Pharmaceutical Science, Assam Downtown University, Guwahati, Assam, India
| | - Raushan Kumar Chaudhary
- Department of Pharmacy Practice, NGSM Institute of Pharmaceutical Sciences (NGSMIPS), Nitte (Deemed to be University), Mangalore, India
| | - Satyendra Deka
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam, India
| | - Arup Chakraborty
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam, India
| |
Collapse
|
3
|
Bhattacharya K, Mahato S, Deka S, Chanu NR, Shrivastava AK, Khanal P. Netting into the Sophoretin pool: An approach to trace GSTP1 inhibitors for reversing chemoresistance. Comput Biol Chem 2024; 108:107981. [PMID: 37976621 DOI: 10.1016/j.compbiolchem.2023.107981] [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: 09/27/2023] [Revised: 11/04/2023] [Accepted: 11/05/2023] [Indexed: 11/19/2023]
Abstract
Chemoresistance, a significant challenge in cancer treatment, is often associated with the cellular glutathione-related detoxification system. The GSTP1 isoenzyme (glutathione S-transferases) plays a critical role in the cytoplasmic inactivation of anticancer drugs. This suggests the identification of GSTP1 inhibitors to combat chemoresistance. We screened Sophoretin (also called quercetin) derivatives for molecular properties, pharmacokinetics, and toxicity profiles. Following that, we conducted molecular docking and simulations between selected derivatives and GSTP1. The best-docked complex, GSTP1-quercetin 7-O-β-D-glucoside, exhibited a binding affinity of -8.1 kcal/mol, with no predicted toxicity and good pharmacokinetic properties. Molecular dynamics simulations confirmed the stability of this complex. Quercetin 7-O-β-D-glucoside shows promise as a lead candidate for addressing chemoresistance in cancer patients, although further experimental studies are needed to validate its efficacy and therapeutic potential.
Collapse
Affiliation(s)
- Kunal Bhattacharya
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam 781026, India; Royal School of Pharmacy, The Assam Royal Global University, Assam 781035, India.
| | - Shikha Mahato
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam 781026, India
| | - Satyendra Deka
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam 781026, India
| | - Nongmaithem Randhoni Chanu
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam 781026, India; Faculty of Pharmaceutical Science, Assam Downtown University, Assam, India
| | - Amit Kumar Shrivastava
- Department of Oriental Pharmacy and Wonkwang-Oriental Medicine Research Institute, Wonkwang University, Iksan 570-749, Republic of Korea
| | - Pukar Khanal
- Department of Pharmacology and Toxicology, KLE College of Pharmacy, Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi 590010, India.
| |
Collapse
|
4
|
Bhattacharya K, Chandra Nath B, Ahmed E, Khanal P, Chanu NR, Deka S, Das D, Shrivastava AK. Integration of network pharmacology, molecular docking, and simulations to evaluate phytochemicals from Drymaria cordata against cervical cancer. RSC Adv 2024; 14:4188-4200. [PMID: 38292259 PMCID: PMC10825855 DOI: 10.1039/d3ra06297j] [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: 09/15/2023] [Accepted: 01/05/2024] [Indexed: 02/01/2024] Open
Abstract
Introduction: Cervical cancer is prevalent among women worldwide. It is a type of cancer that occurs in the cells of the cervix, the lower part of the uterus. Mostly, it is observed in developing nations due to limited access to screening tools. Natural products with anticancer properties and fewer side effects have gained attention. Therefore, this study evaluates the potential of Drymaria cordata as a natural source for treating cervical cancer. Methodology: Phytocompounds present in Drymaria cordata were screened for their molecular properties and drug-likeness. The selected compounds were studied using systems biology tools such as network pharmacology, molecular docking, and molecular dynamics simulations, including MMGBSA studies. Results: Through network pharmacology, molecular docking, and molecular dynamics simulations, quercetin 3-O-β-d-glucopyranosyl-(1→2)-rhamnopyranoside was identified as a hit compound targeting HRAS and VEGFA proteins. These proteins were found to be responsible for the maximum number of pathway modulations in cervical cancer. Conclusion: Drymaria cordata exhibits potential for treating cervical cancer due to the presence of quercetin 3-O-β-d-glucopyranosyl-(1→2)-rhamnopyranoside. Further validation of these findings through in vitro and in vivo studies is required.
Collapse
Affiliation(s)
- Kunal Bhattacharya
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
- Royal School of Pharmacy, The Assam Royal Global University Assam 781035 India
| | | | - Ekbal Ahmed
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
| | - Pukar Khanal
- Department of Pharmacology and Toxicology, KLE College of Pharmacy, KLE Academy of Higher Education and Research (KAHER) Belagavi 590010 India
| | - Nongmaithem Randhoni Chanu
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
- Faculty of Pharmaceutical Science, Assam Downtown University Assam 781026 India
| | - Satyendra Deka
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
| | - Dibyajyoti Das
- Pratiksha Institute of Pharmaceutical Sciences Guwahati Assam 781026 India
- Department of Pharmaceutical Sciences, Dibrugarh University Dibrugarh 786004 India
| | - Amit Kumar Shrivastava
- Department of Pharmacology, Universal College of Medical Sciences, and Teaching Hospital Bhairahawa, Rupandehi 32900 Nepal
| |
Collapse
|
5
|
Bhattacharya K, Bhattacharjee A, Chakraborty M. Assessing the potential of Psidium guajava derived phytoconstituents as anticholinesterase inhibitor to combat Alzheimer's disease: an in-silico and in-vitro approach. J Biomol Struct Dyn 2024:1-18. [PMID: 38205777 DOI: 10.1080/07391102.2024.2301930] [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: 09/04/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024]
Abstract
Acetylcholinesterase (AChE) inhibitors play a crucial role in the treatment of Alzheimer's disease. These drugs increase acetylcholine levels by inhibiting the enzyme responsible for its degradation, which is a vital neurotransmitter involved in memory and cognition. This intervention intermittently improves cognitive symptoms and augments neurotransmission. This study investigates the potential of Psidium guajava fruit extract as an acetylcholinesterase (AChE) inhibitor for Alzheimer's disease treatment. Molecular characteristics and drug-likeness were analyzed after HR-LCMS revealed phytocompounds in an ethanolic extract of Psidium guajava fruit. Selected phytocompounds were subjected to molecular docking against AChE, with the best-docked compound then undergoing MD simulation, MMGBSA, DCCM, FEL, and PCA investigations to evaluate the complex stability. The hit compound's potential toxicity and further pharmacokinetic features were also predicted. Anticholinesterase activity was also studied using in vitro assay. The HR-LCMS uncovered 68 compounds. Based on computational analysis, Fluspirilene was determined to have the highest potential to inhibit AChE. It was discovered that the Fluspirilene-AChE complex is stable and that Fluspirilene has a high binding affinity for AChE. Extract of Psidium guajava fruit significantly inhibits AChE (88.37% at 200 μg/ml). It is comparable to the standard AChE inhibitor Galantamine. Fluspirilene exhibited remarkable binding to AChE. Psidium guajava fruit extract demonstrated substantial AChE inhibitory activity, indicating its potential for Alzheimer's treatment. The study underscores natural sources' significance in drug discovery.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Kunal Bhattacharya
- Royal School of Pharmacy, The Assam Royal Global University, Guwahati, India
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, India
| | - Atanu Bhattacharjee
- Royal School of Pharmacy, The Assam Royal Global University, Guwahati, India
| | | |
Collapse
|
6
|
Yasmeen N, Ahmad Chaudhary A, K Niraj RR, Lakhawat SS, Sharma PK, Kumar V. Screening of phytochemicals from Clerodendrum inerme (L.) Gaertn as potential anti-breast cancer compounds targeting EGFR: an in-silico approach. J Biomol Struct Dyn 2023:1-43. [PMID: 38141177 DOI: 10.1080/07391102.2023.2294379] [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: 07/25/2023] [Accepted: 12/04/2023] [Indexed: 12/25/2023]
Abstract
Breast cancer (BC) is the most prevalent malignancy among women around the world. The epidermal growth factor receptor (EGFR) is a tyrosine kinase receptor (RTK) of the ErbB/HER family. It is essential for triggering the cellular signaling cascades that control cell growth and survival. However, perturbations in EGFR signaling lead to cancer development and progression. Hence, EGFR is regarded as a prominent therapeutic target for breast cancer. Therefore, in the current investigation, EGFR was targeted with phytochemicals from Clerodendrum inerme (L.) Gaertn (C. inerme). A total of 121 phytochemicals identified by gas chromatography-mass spectrometry (GC-MS) analysis were screened against EGFR through molecular docking, ADMET analyses (Absorption, Distribution, Metabolism, Excretion, and Toxicity), PASS predictions, and molecular dynamics simulation, which revealed three potential hit compounds with CIDs 10586 [i.e. alpha-bisabolol (-6.4 kcal/mol)], 550281 [i.e. 2,(4,4-Trimethyl-3-hydroxymethyl-5a-(3-methyl-but-2-enyl)-cyclohexene) (-6.5 kcal/mol)], and 161271 [i.e. salvigenin (-7.4 kcal/mol)]. The FDA-approved drug gefitinib was used to compare the inhibitory effects of the phytochemicals. The top selected compounds exhibited good ADMET properties and obeyed Lipinski's rule of five (ROF). The molecular docking analysis showed that salvigenin was the best among the three compounds and formed bonds with the key residue Met 793. Furthermore, the molecular mechanics generalized born surface area (MMGBSA) calculations, molecular dynamics simulation, and normal mode analysis validated the binding affinity of the compounds and also revealed the strong stability and compactness of phytochemicals at the docked site. Additionally, DFT and DOS analyses were done to study the reactivity of the compounds and to further validate the selected phytochemicals. These results suggest that the identified phytochemicals possess high inhibitory potential against the target EGFR and can treat breast cancer. However, further in vitro and in vivo investigations are warranted towards the development of these constituents into novel anti-cancer drugs.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Nusrath Yasmeen
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur, India
| | - Anis Ahmad Chaudhary
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
| | | | | | | | - Vikram Kumar
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur, India
- Amity Institute of Pharmacy, Amity University Rajasthan, Jaipur, India
| |
Collapse
|
7
|
Bhattacharya K, Sikdar J, Hussain I, Barman D, Shrivastava AK, Sahariah BJ, Bhattacharjee A, Chanu NR, Khanal P. Targeting Melanoma with a phytochemical pool: Tailing Makisterone C. Comput Biol Med 2023; 166:107499. [PMID: 37778211 DOI: 10.1016/j.compbiomed.2023.107499] [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: 06/06/2023] [Revised: 08/12/2023] [Accepted: 09/15/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND AND OBJECTIVE According to World Health Organization, melanoma claims the lives of about 48000 people worldwide each year. The purpose of this study was to identify potential phytochemical pool from Diplazium esculentum against proteins that contribute to melanoma development. METHODS The research was carried to locate potentially bioactive molecules and conduct a theoretical analysis of active ingredients from DE to impact melanoma. Network pharmacology, pharmacokinetics, protein network interaction, gene enrichment, survival, and infiltration analysis were conducted. Furthermore, molecular docking and molecular dynamics simulation was carried out for makisterone C-MAPK1, MAPK3, and AKT1 complexes. RESULTS The potential phytochemical pool were identified (stigmast-5-en-3-ol, esculentic acid, rutin, and makisterone C) and based on network pharmacology and molecular docking studies, makisterone-C was proposed to be the most promising ingredient. Furthermore, the investigation revealed 14 genes as critical "hubs" involved in combating melanoma that are manipulated by the above-mentioned 4 active ingredients and modulate multiple signaling in melanoma development. CONCLUSION This study insights into the potential anti-melanoma effects of phytochemical pool from Diplazium esculentum using network pharmacology analysis, molecular docking, and simulation tailing makisterone C as a lead moiety and suggests the need for makisterone C further evaluation in intervening melanoma progression.
Collapse
Affiliation(s)
- Kunal Bhattacharya
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam, 781026, India; NETES Institute of Pharmaceutical Science, Guwahati, Assam, 781125, India; Royal School of Pharmacy, The Assam Royal Global University, Assam, 781035, India
| | - Jubair Sikdar
- NETES Institute of Pharmaceutical Science, Guwahati, Assam, 781125, India
| | - Imran Hussain
- NETES Institute of Pharmaceutical Science, Guwahati, Assam, 781125, India
| | - Deepchandan Barman
- NETES Institute of Pharmaceutical Science, Guwahati, Assam, 781125, India
| | - Amit Kumar Shrivastava
- Department of Oriental Pharmacy and Wonkwang-Oriental Medicine Research Institute, Wonkwang University, Iksan, 570-749, South Korea
| | | | - Atanu Bhattacharjee
- Royal School of Pharmacy, The Assam Royal Global University, Assam, 781035, India
| | - Nongmaithem Randhoni Chanu
- Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam, 781026, India; Faculty of Pharmaceutical Science, Assam Downtown University, Assam, India
| | - Pukar Khanal
- Department of Pharmacology and Toxicology, KLE College of Pharmacy, Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi, 590010, India.
| |
Collapse
|
8
|
Alizadeh SR, Savadkouhi N, Ebrahimzadeh MA. Drug design strategies that aim to improve the low solubility and poor bioavailability conundrum in quercetin derivatives. Expert Opin Drug Discov 2023; 18:1117-1132. [PMID: 37515777 DOI: 10.1080/17460441.2023.2241366] [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: 05/06/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
INTRODUCTION Scientists are especially interested in polyphenols, particularly flavonoids. Quercetin, a flavonoid, has demonstrated various therapeutic properties, such as antioxidant, anti-diabetic, anti-hypertensive, and anti-carcinogenic activities. Different plant sources contain varying quantities and types of quercetin. However, quercetin's bioavailability is frequently low due to its low water solubility, molecular stability, and absorption characteristics. AREAS COVERED The primary goals of this review are related to the approaches for overcoming quercetin's limitations. Hence, the main tactics for structural modifications (addition of charged and polar groups, removing C2, C3 double bond or reducing aromaticity, disrupting intramolecular H-bond, and reducing crystal lattice stability) and drug delivery systems (cyclodextrin complexes, emulsions, nanoparticles, liposomes, etc.) were discussed to improve water solubility and bioavailability of quercetin. EXPERT OPINION From a tactical perspective, enhancing the solubility of compounds can be simplified through decreasing hydrophobic properties or crystalline stability. In addition, an essential field of study focuses on creating appropriate molecular carriers for substances with low water solubility. However, pharmacokinetics, potency, and toxicology are all impacted by the structural factors and physical characteristics that regulate solubility. Poor water solubility is still a major problem in drug discovery, and new methods are always in demand to overcome it.
Collapse
Affiliation(s)
- Seyedeh Roya Alizadeh
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Niloofar Savadkouhi
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Ali Ebrahimzadeh
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| |
Collapse
|
9
|
Structural Insights into Plasticity and Discovery of Flavonoid Allosteric Inhibitors of Flavivirus NS2B–NS3 Protease. BIOPHYSICA 2023. [DOI: 10.3390/biophysica3010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Flaviviruses are among the most critical pathogens in tropical regions; they cause various severe diseases in developing countries but are not restricted to these countries. The development of antiviral therapeutics is crucial for managing flavivirus outbreaks. Ten proteins are encoded in the flavivirus RNA. The N2B–NS3pro protein complex plays a fundamental role in flavivirus replication and is a promising drug target; however, no flavivirus protease inhibitors have progressed to the preclinical stage. This study analyzed the structural models and plasticity of the NS2B–NS3pro protein complex of five medically important non-dengue flaviviruses (West Nile, Rocio, Ilhéus, yellow fever, and Saint Louis encephalitis). The flavonoids amentoflavone, tetrahydrorobustaflavone, and quercetin were selected for their exceptional binding energies as potential inhibitors of the NS2B–NS3pro protein complex. AutoDock Vina results ranged from −7.0 kcal/mol to −11.5 kcal/mol and the compounds preferentially acted non-competitively. Additionally, the first structural model for the NS2B–NS3pro protein complex was proposed for Ilhéus and Rocio viruses. The NS2B–NS3pro protease is an attractive molecular target for drug development. The three identified natural flavonoids showed great inhibitory potential against the viral species. Nevertheless, further in silico and in vitro studies are required to obtain more information regarding NS2B–NS3pro inhibition by these flavonoids and their therapeutic potential.
Collapse
|
10
|
A Review on Herbal Secondary Metabolites Against COVID-19 Focusing on the Genetic Variants of SARS-CoV-2. Jundishapur J Nat Pharm Prod 2022. [DOI: 10.5812/jjnpp-129618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Context: An outbreak of the new coronavirus disease 2019 (COVID-19) was reported in Wuhan, China, in December 2019, subsequently affecting countries worldwide and causing a pandemic. Although several vaccines, such as mRNA vaccines, inactivated vaccines, and adenovirus vaccines, have been licensed in several countries, the danger of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants persists. To date, Alpha (B.1.1.7), Beta (B.1.351, B.1.351.2, B.1.351.3), Delta (B.1.617.2, AY.1, AY.2, AY. 3), Gamma (P.1, P.1.1, P.1.2), and Iota (B.1 .526) circulating in the United States, Kappa (B.1.617.1) in India, Lambda (C.37) in Peru and Mu (B.1.621) in Colombia are considered the variants of concern and interest. Evidence Acquisition: Data were collected through the end of August 2021 by searching PubMed, Scopus, and Google Scholar databases. There were findings from in silico, in vitro cell-based, and non-cell-based investigations. Results: The potential and safety profile of herbal medicines need clarification to scientifically support future recommendations regarding the benefits and risks of their use. Conclusions: Current research results on natural products against SARS-CoV-2 and variants are discussed, and their specific molecular targets and possible mechanisms of action are summarized.
Collapse
|