A Structural and In Silico Investigation of Potential CDC7 Kinase Enzyme Inhibitors

Area of Science:

• Medicinal Chemistry
• Computational Chemistry
• Structural Biology

Background:

• The CDC7 kinase plays a crucial role in DNA replication and is a potential therapeutic target for cancer treatment.
• Pyrazole derivatives show promise as anticancer agents, warranting further investigation.

Purpose of the Study:

• To synthesize and structurally characterize two novel pyrazole derivatives, PYRA-1 and PYRA-2.
• To investigate the potential of these derivatives as inhibitors of CDC7 kinase using computational methods.

Main Methods:

• Synthesis and single crystal X-ray diffraction for structural confirmation.
• Density Functional Theory (DFT) for structural analysis.
• In silico molecular docking and molecular dynamics (MD) simulations to assess biological activity and stability.

Main Results:

• PYRA-1 and PYRA-2 were successfully synthesized and their 3D structures confirmed via X-ray crystallography.
• Intermolecular interactions like C-H···O, C-H···π, and π-π stacking were identified as key stabilizing forces in the crystal structures.
• Molecular docking revealed binding affinities of -5.421 kcal/mol for PYRA-1 and -5.884 kcal/mol for PYRA-2 with CDC7 kinase.
• MD simulations suggested PYRA-2 exhibits greater potential as a CDC7 kinase inhibitor compared to PYRA-1.

Conclusions:

• The synthesized pyrazole derivatives, PYRA-1 and PYRA-2, possess unique crystal packing features and conformational stability.
• PYRA-2 demonstrates superior inhibitory potential against CDC7 kinase, suggesting it as a promising candidate for further anticancer drug development.