Abstract

Due to their DNA-intercalating agents 9-aniliinoacridines play an important role as antitumor agents. A Series of some Chalcone substituted 9-aniliinoacridines 1a-x were designed for their anti-breast cancer activity. Molecular docking studies were performed by Glide module of Schrodinger suite-2016, targeted against Human epidermal growth factor receptor HER2 (PDB id-3PP0). <i>In-silico</i> ADMET screening by qikprop module and binding free energy by Prime-MMGBSA module also performed. Based on the binding affinity of the designed molecules with HER2 on the basis of GLIDE score and interaction patterns. Most of the compounds 1a-x have significant Glide scores when compared with standard anticancer drugs ledacrine and tamoxifen. Most of the Chalcone substituted 9-anilinoacridine derivatives 1a-x have good binding affinity with Glide score in the range of -5. 32 to -9.37 compared with the standard ledacrine (-5.23) and tamoxifen (-3.78). The results reveals that, Chalcone substituted 9-amino acridines as HER2 inhibitor and the compounds, 1g, f, b, h, t, u with good Glide score may produce significant anti-breast cancer activity for further refinement.

Highlights

  • Many chemotherapeutic agents still plays an important role in the fight against cancer

  • Human epidermal growth factor receptor Human epidermal growth factor receptor 2 (HER2) overexpression is present in 20–30% of the breast cancer

  • Breast cancers have up to 25–50 copies of the HER2 gene, and up to 40–100 fold increase in HER2 protein resulting in more than 2 million receptors expressed at the tumor cell surface

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Summary

Introduction

Many chemotherapeutic agents still plays an important role in the fight against cancer. Human epidermal growth factor receptor-2 is membrane tyrosine kinase was over expressed and gene amplified in human breast cancers. It is an important tumor cell proliferation and survival pathways [3]. Available 9-aminoacridine derivatives like amsacrine and CI-921 a well-known anti-proliferative agent used in the treatment of acute leukaemia. They are biologically unstable because of the Amsacrine (m-AMSA) and CI-921 possess a methane sulfonyl and a methoxy function at C-1' and C-3' of the 9-anilino ring and readily undergo reversible oxidation either chemically or microsomally converted in to quinonediimine. The results revealed that the newly designed chalcone substituted 9-aniliinoacridines exhibited significant inhibition with HER2 exhibit anti-breast cancer activity

Protein Preparation
Ligand Preparation
Glide Ligand Docking
Docking Studies
Insilico ADMET Screening
Conclusion
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