Mutation in the 26S proteasome regulatory subunit rpn2 gene in Plasmodium falciparum confers resistance to artemisinin.
Front Cell Infect Microbiol
; 14: 1342856, 2024.
Article
en En
| MEDLINE
| ID: mdl-38404287
ABSTRACT
Introduction:
Malaria parasites increasingly develop resistance to all drugs available in the market, hampering the goal of reducing malaria burden.Methods:
Herein, we evaluated the impact of a single-nucleotide variant, E738K, present in the 26S proteasome regulatory subunit rpn2 gene, identified in Plasmodium chabaudi resistant parasites. Plasmids carrying a functional rpn2 interspecies chimeric gene with 5' recombination region from P. falciparum and 3' from P. chabaudi were constructed and transfected into Dd2 P. falciparum parasites. Results anddiscussion:
The 738K variant parasite line presented increased parasite survival when subjected to dihydroartemisinin (DHA), as well as increased chymotrypsin-like activity and decreased accumulation of polyubiquitinated proteins. We thus conclude that the ubiquitin-proteasome pathway, including the 738K variant, play an important role in parasite response to DHA, being the first report of a mutation in a potential DHA drug target enhancing parasite survival and contributing to a significant advance in the understanding the biology of artemisinin resistance.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Plasmodium falciparum
/
Artemisininas
/
Antimaláricos
Idioma:
En
Revista:
Front Cell Infect Microbiol
Año:
2024
Tipo del documento:
Article
País de afiliación:
Portugal