Modulation of peptidases by 2,4-diamine-quinazoline derivative induces cell death in the amitochondriate parasite Trichomonas vaginalis.
Biomed Pharmacother
; 139: 111611, 2021 Jul.
Article
in En
| MEDLINE
| ID: mdl-34243597
ABSTRACT
Trichomonas vaginalis is an amitochondriate protozoan and the agent of human trichomoniasis, the most prevalent non-viral sexually transmitted infection (STI) in the world. In this study we showed that 2,4-diamine-quinazoline derivative compound (PH100) kills T. vaginalis. PH100 showed activity against fresh clinical and American Type Culture Collection (ATCC) T. vaginalis isolates with no cytotoxicity against cells (HMVI, 3T3-C1 and VERO) and erythrocytes. In addition, PH100 showed synergistic action with metronidazole, indicating that these compounds act by different mechanisms. When investigating the mechanism of action of PH100 to ATCC 30236, apoptosis-like characteristics were observed, such as phosphatidylserine exposure, membrane alterations, and modulation of gene expression and activity of peptidases related to apoptosis. The apoptosis-like cell death features were not observed for the fresh clinical isolate treated with PH100 revealing distinct profiles. Our data revealed the heterogeneity among T. vaginalis isolates and contribute with the understanding of mechanisms of cell death in pathogenic eukaryotic organisms without mitochondria.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Parasites
/
Peptide Hydrolases
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Quinazolines
/
Trichomonas vaginalis
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Trichomonas Vaginitis
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Diamines
Limits:
Animals
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Female
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Humans
Language:
En
Journal:
Biomed Pharmacother
Year:
2021
Document type:
Article
Affiliation country: