Genetic control of parasite clearance leads to resistance to Plasmodium berghei ANKA infection and confers immunity.

Autor: Campino S; Instituto Gulbenkian de Ciência, Oeiras, Portugal., Bagot S, Bergman ML, Almeida P, Sepúlveda N, Pied S, Penha-Gonçalves C, Holmberg D, Cazenave PA
Jazyk: angličtina
Zdroj: Genes and immunity [Genes Immun] 2005 Aug; Vol. 6 (5), pp. 416-21.
DOI: 10.1038/sj.gene.6364219
Abstrakt: Unprecedented cure after infection with the lethal Plasmodium berghei ANKA was observed in an F2 progeny generated by intercrossing the wild-derived WLA and the laboratory C57BL/6 mouse strains. Resistant mice were able to clear parasitaemia and establish immunity. The observed resistance was disclosed as a combinatorial effect of genetic factors derived from the two parental strains. Genetic mapping of survival time showed that the WLA allele at a locus on chromosome 1 (colocalizing with Berghei resistance 1 (Berr1), a locus associated with resistance to experimental cerebral malaria) increases the probability to resist early death. Also, the C57Bl/6 allele at a novel locus on chromosome 9 (Berr3) confers overall resistance to this lethal Plasmodium infection. This report underlines the value of using wild-derived mouse strains to identify novel genetic factors in the aetiology of disease phenotypes, and provides a unique model for studying parasite clearance and immunity associated with malaria.
Databáze: MEDLINE