Journal
BIOORGANIC CHEMISTRY
Volume 129, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bioorg.2022.106176
Keywords
Chiral Schiff base; Metal complexes; Anticancer activity; Molecular docking
Funding
- Suleyman Demirel University Research Fund
- [TSG-2021-8458]
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Two chiral Schiff base ligands were synthesized and their corresponding metal complexes were prepared. The compounds were characterized by various analytical methods. The cytotoxic effects of these compounds on cancer cells and healthy cells were evaluated, and L1-Pd(II) was identified as a promising anticancer drug candidate. Molecular docking results revealed the interaction between L1-Pd(II) and colon cancer antigen protein.
In this study, two chiral Schiff base ligands (L1 and L2) were synthesized from the condensation reaction of (S)-2-amino-3-phenyl-1-propanol with 2-hydroxybenzaldehyde and 2-hydroxy-1-naphthaldehyde as metal precursors for the preparation of transition metal complexes with Pd(II), Fe(II), Ni(II) and Cu(II). The compounds were characterized by using X-ray (for L1-Pd(II)), NMR, FT-IR, UV-Vis, magnetic susceptibility, molar conductivity, and elemental analysis. The in vitro cytotoxic effects of ligands (L1 and L2) and their metal complexes on colon cancer cells (DLD-1), breast cancer cells (MDA-MB-231) and healthy lung human cell lines were investigated by using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. Among the synthesized compounds, L1-Pd(II) was particularly found to be the most potent anticancer drug candidate in this series with IC50 values of 4.07, and 9.97 mu M in DLD-1 and MDA-MB-231 cell lines, respectively. In addition, molecular docking results indicate that Glu122, Asn103, Ala104, Lys126, Phe114, Leu123, and Lys126 amino acids are the binding site of the colon cancer antigen protein, in which the most active complex, L1-Pd(II) can inhibit the current target.
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