Yazar "Yilmaz, Mustafa Abdullah" seçeneğine göre listele

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    Investigating the Cytotoxic Potential of Omphalodes cappadocica (Willd.) DC. on Breast Cancer Cells by Phytochemical-Based Molecular Docking Studies: A Comparative Study of Aerial Parts and Roots
    (Wiley-V C H Verlag Gmbh, 2026) Gokkaya, Icim; Hepokur, Ceylan; Aykac, Okan; Karaman, Elif; Cakir, Oguz; Tarhan, Abbas; Yilmaz, Mustafa Abdullah
    This study aims to evaluate the potential effects of Omphalodes cappadocica on a breast cancer cell line for the first time. The methanol extract of the aerial parts (Ae-M) exhibited the strongest cytotoxicity against MCF-7 and MDA-MB-231 cells after 48 h of incubation, with IC50 values of 14.08 +/- 0.05 and 10.63 +/- 0.01 mu g/mL, respectively. The root methanol extract (Ro-M) exhibited significant activity in the MCF-7 and MDA-MB-231 cell lines during 48 h of incubation, with IC50 values of 19.25 +/- 0.66 and 16.38 +/- 0.02 mu g/mL, respectively. Quantitative analysis by LC-MS/MS revealed that the main constituents of Ae-M were rosmarinic, quinic, and vanillic acids. Quinic and fumaric acids were identified in Ro-M. Quinic acid had a strong affinity for the target proteins PDB 3ERT, PDB 3HNG, and PDB 3KMU, with docking scores of -9.2, -7.8, and -6.6 kcal/mol, respectively. The docking score for rosmarinic acid for the target protein PDB 3HNG was determined to be -9.7 kcal/mol. The findings suggest that O. cappadocica may serve as a source for the development of anticancer agents.
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    Phytochemical Characterization, Cytotoxic, and Antimicrobial Properties of Aerial Parts of Heliotropium hirsutissimum Weber: In Vitro and In Silico Approaches
    (Wiley-V C H Verlag Gmbh, 2026) Gokkaya, Icim; Aykac, Okan; Hepokur, Ceylan; Bal, Halil; Polat, Derya Cicek; Renda, Gulin; Yilmaz, Mustafa Abdullah
    This study evaluated the possible cytotoxic properties of the aerial parts of Heliotropium hirsutissimum Weber on MCF-7 and MDA-MB-231 breast cancer cell lines and also investigated its antimicrobial effects. Following the identification of the main components of the extract using gas chromatography-mass spectrometry analysis, molecular docking studies were performed using the PDB 6YD9 and PDB 6BRX targets. The crude methanol extract exhibited the most significant cytotoxicity against the MCF-7 and MDA-MB-231 cell lines, with IC50 values of 10.03 +/- 0.02 and 14.36 +/- 0.65 mu g/mL, respectively. Among the tested extracts, the n-hexane sub-extract had modest efficacy against Staphylococcus aureus and Bacillus cereus, with a minimum inhibitory concentration of 0.625 mg/mL. In silico studies demonstrated that 3'-acetyllycopsamine and heliotrine had moderate affinity for the PDB 6YD9 target residue regions, with docking scores of -6.7 and -6.5 kcal/mol, respectively. The docking scores for 3'-acetyllycopsamine and heliotrine against PDB 6BRX were -6.7 and -6.6, respectively. Quinic acid showed strong affinity for the target residues in PDB 6YD9 and PDB 6BRX, with docking scores of -9.3 and -12.1 kcal/mol, respectively. This study suggests that H. hirsutissimum may have a potential effect on breast cancer. This effect may be attributed to the phenolic compounds and pyrrolizidine alkaloids. These findings indicate that H. hirsutissimum is a promising natural resource for future research in both the anticancer and antimicrobial fields.