Unveiling Novel Urease Inhibitors for Helicobacter pylori: A Multi-Methodological Approach from Virtual Screening and...

Area of Science:

• Biochemistry
• Computational Chemistry
• Drug Discovery

Background:

• Helicobacter pylori (Hp) infections are a global health concern requiring new eradication methods.
• Hp urease is a critical virulence factor enabling bacterial survival in the stomach's acidic environment.

Purpose of the Study:

• To identify novel inhibitors of Hp urease (HpU) using a multi-methodological computational approach.
• To evaluate the potential of identified compounds as therapeutic agents against Hp infections.

Main Methods:

• Pharmacophore- and structure-based virtual screening of a large small molecule database (ZINC15).
• Molecular docking (HTVS, SP, XP) and MM-GBSA calculations for energetic re-scoring.
• Molecular dynamics simulations and ADMET predictions to assess stability and pharmacological profiles.

Main Results:

• 15 potential HpU inhibitors were identified after rigorous filtering and screening.
• Candidates CA5, CA8, and CA12 demonstrated significant binding affinity and structural stability.
• Inhibitors exhibit chelating properties crucial for urease inhibition, with similarities to known agents like thiourea.

Conclusions:

• CA5, CA8, and CA12 are promising novel inhibitors of Hp urease.
• These compounds represent potential leads for developing new therapies against H. pylori infections.
• The study highlights the efficacy of integrated computational methods in drug discovery for infectious diseases.