Cytotoxicity and Proteasome Inhibition by Alkaloid Extract from Murraya koenigii Leaves in Breast Cancer Cells—Molecular Docking Studies

2016 ◽  
Vol 19 (12) ◽  
pp. 1155-1165 ◽  
Author(s):  
Ayesha Ismail ◽  
Bindu Noolu ◽  
Ramesh Gogulothu ◽  
Shyam Perugu ◽  
Ajumeera Rajanna ◽  
...  
2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Hadiza Abdulrahman Lawal ◽  
Adamu Uzairu ◽  
Sani Uba

Abstract Background Cancer of the breast is known to be among the top spreading diseases on the globe. Triple-negative breast cancer is painstaking the most destructive type of mammary tumor because it spreads faster to other parts of the body, with high chances of early relapse and mortality. This research would aim at utilizing computational methods like quantitative structure–activity relationship (QSAR), performing molecular docking studies and again to further design new effective molecules using the QSAR model parameters and to analyze the pharmacokinetics “drug-likeliness” properties of the new compounds before they could proceed to pre-clinical trials. Results The QSAR model of the derivatives was highly robust as it also conforms to the least minimum requirement for QSAR model from the statistical assessments of (R2) = 0.6715, (R2adj) = 0.61920, (Q2) = 0.5460 and (R2pred) of 0.5304, and the model parameters (AATS6i and VR1_Dze) were used in designing new derivative compounds with higher potency. The molecular docking studies between the derivative compounds and Maternal Embryonic Leucine Zipper Kinase (MELK) protein target revealed that ligand 2, 9 and 17 had the highest binding affinities of − 9.3, − 9.3 and − 8.9 kcal/mol which was found to be higher than the standard drug adriamycin with − 7.8 kcal/mol. The pharmacokinetics analysis carried out on the newly designed compounds revealed that all the compounds passed the drug-likeness test and also the Lipinski rule of five. Conclusions The results obtained from the QSAR mathematical model of parthenolide derivatives were used in designing new derivatives compounds that were more effective and potent. The molecular docking result of parthenolide derivatives showed that compounds 2, 9 and 17 had higher docking scores than the standard drug adriamycin. The compounds would serve as the most promising inhibitors (MELK). Furthermore, the pharmacokinetics analysis carried out on the newly designed compounds revealed that all the compounds passed the drug-likeness test (ADME and other physicochemical properties) and they also adhered to the Lipinski rule of five. This gives a great breakthrough in medicine in finding the cure to triple-negative breast cancer (MBA-MD-231 cell line).


2021 ◽  
Vol 14 (2) ◽  
pp. 169
Author(s):  
Gloria Ana ◽  
Patrick M. Kelly ◽  
Azizah M. Malebari ◽  
Sara Noorani ◽  
Seema M. Nathwani ◽  
...  

We report the synthesis and biochemical evaluation of compounds that are designed as hybrids of the microtubule targeting benzophenone phenstatin and the aromatase inhibitor letrozole. A preliminary screening in estrogen receptor (ER)-positive MCF-7 breast cancer cells identified 5-((2H-1,2,3-triazol-1-yl)(3,4,5-trimethoxyphenyl)methyl)-2-methoxyphenol 24 as a potent antiproliferative compound with an IC50 value of 52 nM in MCF-7 breast cancer cells (ER+/PR+) and 74 nM in triple-negative MDA-MB-231 breast cancer cells. The compounds demonstrated significant G2/M phase cell cycle arrest and induction of apoptosis in the MCF-7 cell line, inhibited tubulin polymerisation, and were selective for cancer cells when evaluated in non-tumorigenic MCF-10A breast cells. The immunofluorescence staining of MCF-7 cells confirmed that the compounds targeted tubulin and induced multinucleation, which is a recognised sign of mitotic catastrophe. Computational docking studies of compounds 19e, 21l, and 24 in the colchicine binding site of tubulin indicated potential binding conformations for the compounds. Compounds 19e and 21l were also shown to selectively inhibit aromatase. These compounds are promising candidates for development as antiproliferative, aromatase inhibitory, and microtubule-disrupting agents for breast cancer.


2020 ◽  
Vol 52 (6) ◽  
pp. 475-494
Author(s):  
Hadiza Abdulrahman Lawal ◽  
Adamu Uzairu ◽  
Sani Uba

AbstractThe anti-proliferative activities of Novel series of 2-(4-fluorophenyl) imidazol-5-ones against MCF-7 breast cancer cell line were explored via in-slico studies which includes Quantitative structure–activity relationship QSAR, molecular docking studies, designing new compounds, and analyzing the pharmacokinetics properties of the designed compounds. From the QSAR analysis, model number one emerged the best as seen from the arithmetic assessments of (R2) = 0.6981, (R2adj) = 0.6433, (Q2) = 0.5460 and (R2pred) of 0.5357. Model number one was used in designing new derivative compounds, with higher effectiveness against estrogen positive breast cancer (MCF-7 cell line). The Molecular docking studies between the derivatives and Polo-like kinases (Plk1) receptor proved that the derivatives of 2-(4-fluorophenyl) imidazol-5-ones bind tightly to the receptor, thou ligand 24 and 27 had the highest binding affinities of −8.8 and − 9.1 kcal/mol, which was found to be higher than Doxorubicin with a docking score of −8.0 kcal/mol. These new derivatives of 2-(4-fluorophenyl) imidazol-5-ones shall be excellent inhibitors against (plk1). The pharmacokinetics analysis performed on the new structures revealed that all the structures passed the test and also the Lipinski rule of five, and they could further proceed to pre-clinical tests. They both revealed a revolution in medicine for developing novel anti-breast cancer drugs against MCF-7 cell line.


2020 ◽  
Vol 5 (4) ◽  
pp. 301-306
Author(s):  
Praveen Kumar ◽  
Jai Prakash Kumar ◽  
Juhi Barnwal ◽  
Ritu Singh

Novel 4-{3-[2-(2-morpholin-4-yl-ethoxy)phenyl]-5-phenyl-pyrazol- 1-yl}benzenesulfonamide (7) was synthesized and evaluated for its anti-breast cancer activity. It was prepared by cyclocondensation reaction of morpholine-substituted β-diketone, 1-[2-(2-morpholin-4-yl-ethoxy)- phenyl]-3-phenyl-propane-1,3-dione (3) with 4-hydrazinobenzenesulfonamide hydrochloride (6). Chemical structure of titled compound (7) was confirmed by FTIR, 1H & 13C NMR and HRMS spectroscoic analyses. The anticancer activity of titled compound 7 was evaluated against MCF-7 breast cancer cell line by MTT assay. Molecular docking was performed to predict its plausible binding with the estrogen receptor α(ERα) using Molecular Operating Environment 2019.0101 software. The MTT assay results showed that titled compound 7 exhibited better anticancer activity against MCF7 cells (IC50: 4.25 μM) than standard drug, 4-hydroxytamoxifen (IC50: 8.22 μM). Results of molecular docking studies were found in good agreement with the results of anticancer evaluation, as the binding score of titled compound 7 (-16.9872 kcal/mol) was lower as compared to 4-hydroxytamoxifen (-15.1112 kcal/mol). The new cationic interaction of titled compound 7 with Trp383 and hydrogen bonding interaction with Phe404 in active site of ERα made its anticancer activity better than 4-hydroxytamoxifen. Thus, 4-{3-[2-(2-morpholin-4-yl-ethoxy)phenyl]-5-phenyl-pyrazol- 1-yl}benzenesulfonamide (7) was emerged as a potent anti-breast cancer agent.


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