Unlocking the biological potential of transition metal complexes with Thiosemicarbazone ligands: Insights from computational studies

Affiliations
  • 1Department of Computer Science & Engineering, Symbiosis Institute of Technology, Pune, 412115, Maharashtra, India.
  • 2Department of Chemistry, Guru Jambheshwar University of Science and Technology, Hisar, 125001, Haryana, India.
  • 3Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, Haryana, India.
  • 4Sinhgad Technical Education Society’s, Sinhgad College of Pharmacy, Off Sinhgad Road, Vadgaon (Bk), Pune, 411041, Maharashtra, India.
  • 5University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India.

Published on:

Abstract

In the previous study, the synthesis and characterization of 4-(3-fluorophenyl)-3-thiosemicarbazide and benzaldehyde derivatives based thiosemicarbazone ligands and their Co(II), Ni(II), Cu(II), Zn(II) complexes were carried out to evaluate their malarial and oxidant and inflammatory inhibition abilities, demonstrating that these compounds have robust efficacy for these ailments. In the present research, to find out a combating agent against breast cancer, tuberculosis, bacterial and fungal ailments, the compounds were tested through MTT, microplate alamar blue and serial dilution protocols. ADMET and DFT investigation were analyzed against highly bioactive compounds (2, 7-10) to give a new insight about compound’s reactivity, stability and drug likeness properties. Furthermore, activity results shows that the ligand (2) and its complexes demonstrate greater efficacy compared to ligand (1) and its complexes. The Cu(II) and Zn(II) complexes were observed as highly efficient for breast cancer (MCF-7 cell line), TB (HR strain), bacterial and fungal ailments in comparison of standard drugs with 0.029 ± 0.001 μM IC value for in anticancer activity and 0.0034 ± 0.0017 μmol/mL MIC value for in anti-tuberculosis activity. In the molecular docking investigation, the various kind of binding interactions and lowest binding affinity of (against 4RJ3 (-10.0 kcal/mol), 2VCJ (-7.9 kcal/mol)) and (-7.8 and -8.3 kcal/mol for 5V3Y and 3PTY protein) support their bioactivity. This research highlights the pharmaceutical importance of transition metal complexes having thiosemicarbazones, presenting a significant approach for the discovery of potent anti-infectious agent.

Related Concept Videos

JoVE Research Video for Metal-Ligand Bonds 02:51

19.1K

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in…

JoVE Research Video for Crystal Field Theory - Octahedral Complexes 02:58

24.4K

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on…

JoVE Research Video for Valence Bond Theory 02:42

7.7K

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable…