New hit compounds against Trypanosoma cruzi derived from mining yeast chemogenomic profiling data

Chagas disease, caused by Trypanosoma cruzi, remains a major neglected tropical disease with limited therapeutic options. To accelerate drug discovery, we developed a bioinformatic and chemoinformatic pipeline that integrates chemogenomic profiling data from Saccharomyces cerevisiae with orthology and essentiality information from trypanosomatids. First, we integrated data from 5 reference yeast chemogenomic screens which assayed a total of 2,788 compounds against a collection of 5,811 gene-deletion strains thus providing a rich matrix of ~ 270,000 gene-drug associations. Using these data as input the pipeline filtered and prioritized 193 candidate bioactive compounds with links to conserved parasite orthologs. Following manual curation, 22 compounds were selected for experimental evaluation. In vitro assays against intracellular T. cruzi revealed three novel hits with micromolar EC_50 values and favorable selectivity indices. This work demonstrates that comparative chemogenomics can be leveraged for drug repositioning in parasitic protozoa, providing a tractable strategy to enrich lead-like compounds and expand the chemical space available for Chagas disease drug discovery. Importantly, both the curated yeast chemogenomic dataset and the analysis pipeline are reusable resources, and the prioritized compound list offers a ready-to-test chemical space that can be further explored, validated, and expanded by other researchers and for additional organisms. Fil: Didier Garnham, Mercedes Monica. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Biotecnológicas; Argentina Fil: Urán Landaburu, Héctor Lionel. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Biotecnológicas; Argentina