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Antiproliferative Activity of New Derivatives of Pyrazino[1,2-A]Benzimidazole: Integrated Cell-Based Assay and Computational Studies With Divalent Magnesium, Iron, and Copper Ions Publisher Pubmed



Rahimifard M1 ; Jalalimanesh N2 ; Movahed MA3 ; Hadjighassem M4, 5 ; Pourahmad Jaktaji R6 ; Bagheri Z7 ; Pourahmad J8 ; Zarghi A3
Authors
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Authors Affiliations
  1. 1. Pharmaceutical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. School of Chemistry, College of Science, University of Tehran, Tehran, Iran
  3. 3. Department of Medicinal and Pharmaceutical Chemistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Department of Genetics, Faculty of Sciences, Shahrekord University, Shahrekord, Iran
  7. 7. Faculty of Life Sciences and Biotechnology, Shahid Beheshti University G.C., Tehran, Iran
  8. 8. Department of Toxicology and Pharmacology, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Journal of Biochemical and Molecular Toxicology Published:2022


Abstract

Magnesium, iron, and copper are three vital metals that play essential roles in cancer cell proliferation. This study aimed to evaluate the metal chelation of new derivatives of pyrazino[1,2-a]benzimidazole and investigate their antiproliferative properties. The density functional theory method has been employed to evaluate the complexation properties of new synthetic pyrazino[1,2-a]benzimidazole derivatives possessing the 4-OMe, 2,4-dimethyl, and 3,4,5-trimethoxy substitution on N-2 phenyl ring with divalent magnesium, iron, and copper. The free energies for the water-ligand exchange reactions were employed to investigate the thermodynamic stability, water exchange properties, and electronic properties in the gas phase. Natural population analysis was employed to estimate atomic partial charges, second-order interactions between the filled and vacant orbitals, and the occupancies of the metals' valence s, p, and d orbitals. Among pyrazino[1,2-a]benzimidazole derivatives, the 3,4,5-trimethoxy substituted pyrazino[1,2-a]benzimidazole shows better electron donor ability. This compound also reduced proliferation and increased the apoptosis of human glioblastoma cancer cells. © 2022 Wiley Periodicals LLC.