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Sustainable Development Goals
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A NOVEL HIGH-CONTENT SCREENING-BASED METHOD FOR ANTI- TRYPANOSOMA CRUZI DRUG DISCOVERY USING HUMAN-INDUCED PLURIPOTENT STEM CELL-DERIVED CARDIOMYOCYTES
Doença de Chagas
Insuficiência Cardíaca
Cardiotoxicidade
Células-Tronco Pluripotentes Induzidas
Chagas' disease
Cardiac insufficiency
Cardiotoxicity
Induced Pluripotent Stem Cells
Author
Portella, Diogo Crispim Nascimento
Rossi, Erik Aranha
Paredes, Bruno Diaz
Bastos, Tanira Matutino
Meira, Cássio Santana
Nonaka, Carolina Vasques Kymie
Silva, Daniela Nascimento
Caria, Alex Improta
Moreira, Diogo Rodrigo Magalhaes
Leite, Ana Cristina Lima
Oliveira Filho, Gevanio Bezerra de
Barbosa Filho, José Maria
Santos, Ricardo Ribeiro dos
Soares, Milena Botelho Pereira
Souza, Bruno Solano de Freita
Rossi, Erik Aranha
Paredes, Bruno Diaz
Bastos, Tanira Matutino
Meira, Cássio Santana
Nonaka, Carolina Vasques Kymie
Silva, Daniela Nascimento
Caria, Alex Improta
Moreira, Diogo Rodrigo Magalhaes
Leite, Ana Cristina Lima
Oliveira Filho, Gevanio Bezerra de
Barbosa Filho, José Maria
Santos, Ricardo Ribeiro dos
Soares, Milena Botelho Pereira
Souza, Bruno Solano de Freita
Affilliation
"Múltipla ver em Notas"
Abstract
Chagas disease is caused by Trypanosoma cruzi infection and remains a relevant cause of chronic heart failure in Latin America.
The pharmacological arsenal for Chagas disease is limited, and the available anti-T. cruzi drugs are not effective when
administered during the chronic phase. Cardiomyocytes derived from human-induced pluripotent stem cells (hiPSC-CMs) have
the potential to accelerate the process of drug discovery for Chagas disease, through predictive preclinical assays in target
human cells. Here, we aimed to establish a novel high-content screening- (HCS-) based method using hiPSC-CMs to
simultaneously evaluate anti-T. cruzi activity and cardiotoxicity of chemical compounds. To provide proof-of-concept data, the
reference drug benznidazole and three compounds with known anti-T. cruzi activity (a betulinic acid derivative named BA5 and
two thiazolidinone compounds named GT5A and GT5B) were evaluated in the assay. hiPSC-CMs were infected with T. cruzi
and incubated for 48 h with serial dilutions of the compounds for determination of EC50 and CC50 values. Automated
multiparametric analyses were performed using an automated high-content imaging system. Sublethal toxicity measurements
were evaluated through morphological measurements related to the integrity of the cytoskeleton by phalloidin staining, nuclear
score by Hoechst 33342 staining, mitochondria score following MitoTracker staining, and quantification of NT-pro-BNP, a
peptide released upon mechanical myocardial stress. The compounds showed EC50 values for anti-T. cruzi activity similar to
those previously described for other cell types, and GT5B showed a pronounced trypanocidal activity in hiPSC-CMs. Sublethal
changes in cytoskeletal and nucleus scores correlated with NT-pro-BNP levels in the culture supernatant. Mitochondrial score
changes were associated with increased cytotoxicity. The assay was feasible and allowed rapid assessment of anti-T. cruzi action
of the compounds, in addition to cardiotoxicity parameters. The utilization of hiPSC-CMs in the drug development workflow
for Chagas disease may help in the identification of novel compounds
Keywords in Portuguese
Trypanosoma cruziDoença de Chagas
Insuficiência Cardíaca
Cardiotoxicidade
Células-Tronco Pluripotentes Induzidas
Keywords
Trypanosoma cruziChagas' disease
Cardiac insufficiency
Cardiotoxicity
Induced Pluripotent Stem Cells
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