PMID- 34060981 OWN - NLM STAT- MEDLINE DCOM- 20221216 LR - 20221221 IS - 1538-0254 (Electronic) IS - 0739-1102 (Linking) VI - 40 IP - 19 DP - 2022 TI - A structure-based approach for the discovery of inhibitors against methylcitrate synthase of Paracoccidioides lutzii. PG - 9361-9373 LID - 10.1080/07391102.2021.1930584 [doi] AB - Paracoccidioidomycosis (PCM) is a systemic mycosis, endemic in Latin America, caused by fungi of the genus Paracoccidioides. The treatment of PCM is complex, requiring a long treatment period, which often results in serious side effects. The aim of this study was to screen for inhibitors of a specific target of the fungus that is absent in humans. Methylcitrate synthase (MCS) is a unique enzyme of microorganisms and is responsible for the synthesis of methylcitrate at the beginning of the propionate degradation pathway. This pathway is essential for several microorganisms, since the accumulation of propionyl-CoA can impair virulence and prevent the development of the pathogen. We performed the modeling and molecular dynamics of the structure of Paracoccidioides lutzii MCS (PlMCS) and performed a virtual screening on 89,415 compounds against the active site of the enzyme. The compounds were selected according to the affinity and efficiency criteria of in vitro tests. Six compounds were able to inhibit the enzymatic activity of recombinant PlMCS but only the compound ZINC08964784 showed fungistatic and fungicidal activity against Paracoccidioides spp. cells. The analysis of the interaction profile of this compound with PlMCS showed its effectiveness in terms of specificity and stability when compared to the substrate (propionyl-CoA) of the enzyme. In addition, this compound did not show cytotoxicity in mammalian cells, with an excellent selectivity index. Our results suggest that the compound ZINC08964784 may become a promising alternative antifungal against Paracoccidioides spp. Communicated by Ramaswamy H. Sarma. FAU - Lima, Raisa Melo AU - Lima RM AUID- ORCID: 0000-0003-1210-8302 AD - Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Goias, Brazil. AD - Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiania, Brazil. FAU - Freitas E Silva, Kleber Santiago AU - Freitas E Silva KS AD - Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Goias, Brazil. FAU - Silva, Livia do Carmo AU - Silva LDC AD - Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiania, Brazil. FAU - Ribeiro, Jean Francisco Rosa AU - Ribeiro JFR AD - Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiania, Brazil. FAU - Neves, Bruno Junior AU - Neves BJ AD - Faculty of Pharmacy, Laboratory for Molecular Modeling and Drug Design, Federal University of Goias, Goiania, Brazil. FAU - Brock, Matthias AU - Brock M AD - School of Life Science, Fungal Biology Group, University of Nottingham, Nottingham, UK. FAU - Soares, Celia Maria de Almeida AU - Soares CMA AD - Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Goias, Brazil. FAU - da Silva, Roosevelt Alves AU - da Silva RA AUID- ORCID: 0000-0001-5624-4790 AD - Collaborative Nucleus of Biosystems, Institute of Exact Sciences, Federal University of Jatai, Jatai, Brazil. FAU - Pereira, Maristela AU - Pereira M AUID- ORCID: 0000-0002-5482-8036 AD - Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Goias, Brazil. AD - Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiania, Brazil. LA - eng GR - MR/N017528/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article DEP - 20210601 PL - England TA - J Biomol Struct Dyn JT - Journal of biomolecular structure & dynamics JID - 8404176 RN - EC 4.1.3.- (methylcitrate synthase) RN - EC 2.3.3.1 (Citrate (si)-Synthase) RN - Paracoccidioides lutzii SB - IM MH - Humans MH - Animals MH - *Paracoccidioides MH - *Paracoccidioidomycosis/drug therapy/microbiology MH - Citrate (si)-Synthase/pharmacology MH - Mammals OTO - NOTNLM OT - Paracoccidioides spp. OT - Virtual screening OT - inhibitors OT - methylcitrate synthase OT - molecular dynamics EDAT- 2021/06/02 06:00 MHDA- 2022/12/15 06:00 CRDT- 2021/06/01 12:16 PHST- 2021/06/02 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2021/06/01 12:16 [entrez] AID - 10.1080/07391102.2021.1930584 [doi] PST - ppublish SO - J Biomol Struct Dyn. 2022;40(19):9361-9373. doi: 10.1080/07391102.2021.1930584. Epub 2021 Jun 1.