An integrated structure- and pharmacophore-based MMP-12 virtual screening

Area of Science:

• Biochemistry
• Pharmacology
• Medicinal Chemistry

Background:

• Matrix metalloproteinases (MMPs) are a family of proteases.
• MMP-12 specifically degrades elastin and is implicated in inflammatory respiratory diseases and atherosclerosis.

Purpose of the Study:

• To discover novel inhibitors with new scaffolds and selectivity for MMP-12.
• To validate the use of integrated virtual screening methods for MMP-12 inhibitor discovery.

Main Methods:

• Employed integrated ligand- and structure-based virtual screening.
• Utilized a pharmacophore model and a selected crystal structure (PDB: 3F17) for virtual screening.
• Performed cross-docking to select the optimal receptor structure.

Main Results:

• Seven out of 18 tested compounds showed measurable inhibition of MMP-12.
• The developed pharmacophore model and crystal structure were effective for discovering MMP-12 inhibitors.
• Key interactions with catalytic residues Glu219 and Ala182 were identified.

Conclusions:

• Discovery of a new class of MMP-12 inhibitors.
• The findings support the use of virtual screening for identifying selective enzyme inhibitors.
• These inhibitors represent potential leads for further optimization in treating MMP-12-related diseases.