New peptidomimetic rhodesain inhibitors with improved selectivity towards human cathepsins.
Eur J Med Chem
; 238: 114460, 2022 Aug 05.
Article
en En
| MEDLINE
| ID: mdl-35597010
ABSTRACT
Parasitic cysteine proteases such as rhodesain (TbCatL) from Trypanosoma brucei rhodesiense are relevant targets for developing new potential drugs against parasitic diseases (e. g. Human African Trypanosomiasis). Designing selective inhibitors for parasitic cathepsins can be challenging as they share high structural similarities with human cathepsins. In this paper, we describe the development of novel peptidomimetic rhodesain inhibitors by applying a structure-based de novo design approach and molecular docking protocols. The inhibitors with a new scaffold in P2 and P3 position display high selectivity towards trypanosomal rhodesain over human cathepsins L and B and high antitrypanosomal activity. Vinylsulfonate 2a has emerged as a potent rhodesain inhibitor (k2nd = 883 ⢠103 M-1 s-1) with single-digit nanomolar binding affinity (Ki = 9 nM) and more than 150-fold selectivity towards human cathepsins and it thus constitutes an interesting starting compound for the further development of selective drugs against Human African Trypanosomiasis.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Tripanocidas
/
Trypanosoma brucei brucei
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Tripanosomiasis Africana
/
Peptidomiméticos
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Eur J Med Chem
Año:
2022
Tipo del documento:
Article
País de afiliación:
Alemania