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Fragment screening against Schistosoma mansoni dihydroorotate dehydrogenase: a modern approach for drug discovery

Grant number: 19/04395-6
Support type:Scholarships in Brazil - Master
Effective date (Start): June 01, 2019
Effective date (End): February 28, 2021
Field of knowledge:Biological Sciences - Biophysics - Molecular Biophysics
Principal researcher:Maria Cristina Nonato
Grantee:Renan Minin de Mori
Home Institution: Faculdade de Ciências Farmacêuticas de Ribeirão Preto (FCFRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


Fragment screening has emerged as an important tool in the pipeline of drug discovery. By using compounds of low molecular weight, it is possible to cover a broader range of the chemical space with fewer compounds. Fragments often bind with better ligand efficiencies than traditional screening and hits are capable of binding to a larger number of proteins than conventional 'drug-size' compounds. After the screening, results can be combined by growing, merging, or linking them to produce drug leads with higher affinity. This project focuses on the use of the fragment-based lead discovery technique to search for novel chemical entities as precursors of selective and potent inhibitors of Schistosoma mansoni dihydroorotate dehydrogenase (SmDHODH) with drug-like properties. Schistosoma mansoni is among the five species responsible for the schistosomiasis, a neglected parasitic disease caused by blood-dwelling trematodes of the genus Schistosoma. DHODH is a flavoenzyme that catalyzes the stereospecific oxidation of (S)-dihydroorotate (DHO) to orotate during the fourth and only redox step of the de novo pyrimidine nucleotide biosynthetic pathway. The depletion of nucleotide pools by the selective inhibition of DHODH has been exploited for the development of different therapeutic strategies, in particular to parasitic diseases. The present project represents a further step towards exploiting the inhibition of Schistosoma mansoni dihydroorotate dehydrogenase (SmDHODH) as a strategy to develop new therapeutics to fight schistosomiasis. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE MORI, RENAN M.; ALEIXO, MARIANA A. A.; ZAPATA, LUANA C. C.; CALIL, FELIPE A.; EMERY, FLAVIO S.; NONATO, M. CRISTINA. Structural basis for the function and inhibition of dihydroorotate dehydrogenase from Schistosoma mansoni. FEBS Journal, v. 288, n. 3, . (19/04395-6, 19/08376-6, 15/25099-5)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MORI, Renan Minin de. Fragment screening against Schistosoma mansoni dihydroorotate dehydrogenase: a modern approach for drug discovery. 2021. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Ciências Farmacêuticas de Ribeirão Preto (PCARP/BC) Ribeirão Preto.

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