scholarly journals Discovery of 2-Substituted 3-Arylquinoline Derivatives as Potential Anti-Inflammatory Agents Through Inhibition of LPS-Induced Inflammatory Responses in Macrophages

Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1162 ◽  
Author(s):  
Cheng-Yao Yang ◽  
Yung-Li Hung ◽  
Kai-Wei Tang ◽  
Shu-Chi Wang ◽  
Chih-Hua Tseng ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Inflammatory Cytokines ◽  
Inflammatory Responses ◽  
Hydrophobic Interactions ◽  
Activated Macrophages ◽  
Docking Analysis ◽  
Lead Compounds ◽  
Anti Inflammatory ◽  
Molecular Docking Analysis ◽  
Pro Inflammatory Cytokines

We describe herein the preparation of certain 2-substituted 3-arylquinoline derivatives and the evaluation of their anti-inflammatory effects in LPS-activated murine J774A.1 macrophage cells. Among these newly synthesized 2-substituted 3-arylquinoline derivatives, 2-(4-methoxy- benzoyl)-3-(3,4,5-trimethoxyphenyl)quinoline (18a) and 2-(4-fluorobenzoyl)-3-(3,4,5-trimethoxy- phenyl)quinoline (18b) are two of the most active compounds which can inhibit the production of NO at non-cytotoxic concentrations. Our results have also indicated that compounds 18a and 18b significantly decrease the secretion of pro-inflammatory cytokines (TNF-á and IL-6), inhibit the expression of iNOS, suppress the phosphorylation of MAPKs, and attenuate the activity of NF-êB by LPS-activated macrophages. Through molecular docking analysis, we found that 18b could fit into the middle of the TNF-á dimer and form hydrophobic interactions with Leu55, Leu57 chain A and B, Tyr59, Val123 chain B and D, Ile 155. These results suggest that both 18a and 18b are potential lead compounds in inhibiting LPS-induced inflammatory responses. Further structural optimization to discover novel anti-inflammatory agents is ongoing.

scholarly journals Potential Role of Colchicine in Combating COVID-19 Cytokine Storm and Its Ability to Inhibit Protease Enzyme of SARS-CoV-2 as Conferred by Molecular Docking Analysis

Medicina ◽  
2021 ◽  
Vol 58 (1) ◽  
pp. 20
Author(s):  
Noha A. Kamel ◽  
Nasser S. M. Ismail ◽  
Ibrahim S. Yahia ◽  
Khaled M. Aboshanab
Keyword(s):  
Molecular Docking ◽  
Hydrophobic Interactions ◽  
Cytokine Storm ◽  
Destructive Effect ◽  
Health Crisis ◽  
Docking Analysis ◽  
Global Pandemic ◽  
Protease Enzyme ◽  
Anti Inflammatory ◽  
Molecular Docking Analysis

Despite the advance in the management of Coronavirus disease 2019 (COVID-19), the global pandemic is still ongoing with a massive health crisis. COVID-19 manifestations may range from mild symptoms to severe life threatening ones. The hallmark of the disease severity is related to the overproduction of pro-inflammatory cytokines manifested as a cytokine storm. Based on its anti-inflammatory activity through interfering with several pro and anti-inflammatory pathways, colchicine had been proposed to reduce the cytokine storm and subsequently improve clinical outcomes. Molecular docking analysis of colchicine against RNA-dependent RNA polymerase (RdRp) and protease enzymes of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) revealed that colchicine provided a grid-based molecular docking method, C-DOCKER interaction energy 64.26 and 47.53 (Kcal/mol) with protease and RdRp, respectively. This finding indicated higher binding stability for colchicine–protease complexes than the colchicine–RdRp complex with the involvement of seven hydrogen bonds, six hydrogen acceptors with Asn142, Gly143, Ser144, and Glu166 and one hydrogen-bond donors with Cys145 of the protease enzyme. This is in addition to three hydrophobic interactions with His172, Glu166, and Arg188. A good alignment with the reference compound, Boceprevir, indicated high probability of binding to the protease enzyme of SARS-CoV-2. In conclusion, colchicine can ameliorate the destructive effect of the COVID-19 cytokine storm with a strong evidence of antiviral activity by inhibiting the protease enzyme of SARS-CoV-2.

scholarly journals Computational Identification of Potential Anti-Inflammatory Natural Compounds Targeting the p38 Mitogen-Activated Protein Kinase (MAPK): Implications for COVID-19-Induced Cytokine Storm

Biomolecules ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 653
Author(s):  
Seth O. Asiedu ◽  
Samuel K. Kwofie ◽  
Emmanuel Broni ◽  
Michael D. Wilson
Keyword(s):  
Molecular Docking ◽  
P38 Mapk ◽  
Inflammatory Cytokines ◽  
Binding Energies ◽  
Mitogen Activated Protein Kinase ◽  
Inflammatory Activity ◽  
Computational Techniques ◽  
Cytokine Storm ◽  
Anti Inflammatory ◽  
Pro Inflammatory Cytokines

Severely ill coronavirus disease 2019 (COVID-19) patients show elevated concentrations of pro-inflammatory cytokines, a situation commonly known as a cytokine storm. The p38 MAPK receptor is considered a plausible therapeutic target because of its involvement in the platelet activation processes leading to inflammation. This study aimed to identify potential natural product-derived inhibitory molecules against the p38α MAPK receptor to mitigate the eliciting of pro-inflammatory cytokines using computational techniques. The 3D X-ray structure of the receptor with PDB ID 3ZS5 was energy minimized using GROMACS and used for molecular docking via AutoDock Vina. The molecular docking was validated with an acceptable area under the curve (AUC) of 0.704, which was computed from the receiver operating characteristic (ROC) curve. A compendium of 38,271 natural products originating from Africa and China together with eleven known p38 MAPK inhibitors were screened against the receptor. Four potential lead compounds ZINC1691180, ZINC5519433, ZINC4520996 and ZINC5733756 were identified. The compounds formed strong intermolecular bonds with critical residues Val38, Ala51, Lys53, Thr106, Leu108, Met109 and Phe169. Additionally, they exhibited appreciably low binding energies which were corroborated via molecular mechanics Poisson–Boltzmann surface area (MM-PBSA) calculations. The compounds were also predicted to have plausible pharmacological profiles with insignificant toxicity. The molecules were also predicted to be anti-inflammatory, kinase inhibitors, antiviral, platelet aggregation inhibitors, and immunosuppressive, with probable activity (Pa) greater than probable inactivity (Pi). ZINC5733756 is structurally similar to estradiol with a Tanimoto coefficient value of 0.73, which exhibits anti-inflammatory activity by targeting the activation of Nrf2. Similarly, ZINC1691180 has been reported to elicit anti-inflammatory activity in vitro. The compounds may serve as scaffolds for the design of potential biotherapeutic molecules against the cytokine storm associated with COVID-19.

scholarly journals Molecular Docking Analysis Of Some Phytochemicals On Two SARS-CoV-2 Targets: Potential Lead Compounds Against Two Target Sites of SARS-CoV-2 Obtained from Plants

2020 ◽  
Author(s):  
Amaka Ubani ◽  
Francis Agwom ◽  
Oluwatoyin RuthMorenikeji ◽  
Shehu Nathan ◽  
Pam Luka ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Binding Affinity ◽  
Potential Candidate ◽  
Binding Affinities ◽  
Protein Targets ◽  
Docking Analysis ◽  
Lead Compounds ◽  
Target Sites ◽  
Antiviral Activities ◽  
Molecular Docking Analysis

AbstractCOV spike (S) glycoprotein and Mpro are two key targets that have been identified for vaccines and drug development against the COVID-19 disease. Virtual screening of some compounds of plants origin that have shown antiviral activities were carried out on the two targets, 6lu7 and 6vsb by docking with the PyRx software. The binding affinities were compared with other compounds and drugs already identified as potential ligands for 6lu7 and 6vsb as well as Chloroquine and hydroxychloroquine. The docked compounds with best binding affinities were also filtered for drug likeness using the SwissADME and PROTOX platforms on the basis of Physicochemical properties and toxicity respectively. The docking results revealed that scopodulcic acid and dammarenolic acid had the best binding affinity on the s-glycoprotein and Mpro protein targets respectively. Silybinin also demonstrated a good binding affinity to both protein targets making it a potential candidate for further evaluation as repurposed candidate for SARS COV2 with likelihood of having a multitarget activity.

scholarly journals Molecular docking analysis and evaluation of the antibacterial and antioxidant activities of the constituents of Ocimum cufodontii

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Muhdin Aliye ◽  
Aman Dekebo ◽  
Hailemichael Tesso ◽  
Teshome Abdo ◽  
Rajalakshmanan Eswaramoorthy ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Essential Oil ◽  
Hydrophobic Interactions ◽  
Antioxidant Activities ◽  
Reducing Power ◽  
Principal Component ◽  
Inhibition Zone ◽  
Hexane Extract ◽  
Docking Analysis ◽  
Molecular Docking Analysis

AbstractOcimum cufodontii ((Lanza) A.J.Paton) has been traditionally used in Ethiopia against bacteria. The extracts of the leaves and roots of O. cufodontii after silica gel column chromatography furnished compounds 1–5, compounds 3 and 4 are new natural products. The oil from the hydro-distillation of the leaves, after analyzed with GC–MS, has led to the identification of β-caryophyllene as a principal component, suggesting the essential oil as medicine and spices to enhance the taste of food. The constituents of O. cufodontii were assessed for their antibacterial activity against E. coli, K. pneumonia, S. typhymurium and S. aureus. The best activity was displayed against S. aureus by the hexane extract of the roots, compound 4, and the essential oil with an inhibition zone of 17, 15, and 19 mm, respectively. Molecular docking analysis revealed that compound 1 has better docking efficiency and forms hydrophobic interactions with five amino acids (ARG192, PHE196, GLU185, GLU193, and LYS189). This suggests that the compounds may act as potential inhibitors of DNA gyrase. The constituents were also assessed for their antioxidant activities using DPPH, ferric thicyanate and ferric reducing power assay. The hexane extracts of the roots inhibited the DPPH radical and peroxide formation by 90.5 and 83%, respectively, suggesting the potential of the extract as an antioxidant. Furthermore, the hexane extract of the roots of O. cufodontii exhibited the maximum reducing power compared with the EtOAc and methanol extracts. Hence, the activity displayed herein indicated as the plant has great potential as a remedy for diseases caused by bacteria and radicals.

scholarly journals Molecular docking analysis of furfural and isoginkgetin with heme oxygenase I and PPARγ

2021 ◽  
Vol 17 (2) ◽  
pp. 356-362
Author(s):  
Preetha Santhakumar ◽  
Keyword(s):  
Molecular Docking ◽  
Cascade Process ◽  
Docking Analysis ◽  
Target Proteins ◽  
Hydrogen Bond Interactions ◽  
Tnf Α ◽  
Anti Inflammatory ◽  
Factor Α ◽  
Necrosis Factor ◽  
Molecular Docking Analysis

Inflammatory is cascade process triggered by pro-inflammatory cytokines and anti-inflammatory. In the present study anti-inflammatory activity of Stachydrine and Sakuranetin were studied against the inflammatory target proteins IL-6 and TNF-α by using molecular docking analysis. Both compounds showed the good binding with selected target proteins. Compared to Sakuranetin, the Stachydrine have lowest binding energy and good hydrogen bond interactions. Hence results of study indicated that Stachydrine possessed high and specific inhibitory activity on tumor necrosis factor-α and interleukin-6.

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