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CRISPR/Cas9 -mediated gene knockout of Anopheles gambiae FREP1 suppresses malaria parasite infection
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CRISPR/Cas9 -mediated gene knockout of Anopheles gambiae FREP1 suppresses malaria parasite infection
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Journal Article
CRISPR/Cas9 -mediated gene knockout of Anopheles gambiae FREP1 suppresses malaria parasite infection
2018
Overview
Plasmodium relies on numerous agonists during its journey through the mosquito vector, and these agonists represent potent targets for transmission-blocking by either inhibiting or interfering with them pre- or post-transcriptionally. The recently developed CRISPR/Cas9-based genome editing tools for Anopheles mosquitoes provide new and promising opportunities for the study of agonist function and for developing malaria control strategies through gene deletion to achieve complete agonist inactivation. Here we have established a modified CRISPR/Cas9 gene editing procedure for the malaria vector Anopheles gambiae, and studied the effect of inactivating the fibrinogen-related protein 1 (FREP1) gene on the mosquito's susceptibility to Plasmodium and on mosquito fitness. FREP1 knockout mutants developed into adult mosquitoes that showed profound suppression of infection with both human and rodent malaria parasites at the oocyst and sporozoite stages. FREP1 inactivation, however, resulted in fitness costs including a significantly lower blood-feeding propensity, fecundity and egg hatching rate, a retarded pupation time, and reduced longevity after a blood meal.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Animals
/ Biochemistry, Molecular Biology
/ Blood
/ CRISPR
/ Disease
/ Fitness
/ Genes
/ Genomes
/ Hatching
/ Humans
/ Insect Proteins - antagonists & inhibitors
/ Malaria
/ Malaria, Falciparum - immunology
/ Malaria, Falciparum - parasitology
/ Malaria, Falciparum - prevention & control
/ Malaria, Falciparum - transmission
/ Medicine and Health Sciences
/ Mice
/ Microbiology and Parasitology
/ Mutants
/ Plasmodium falciparum - isolation & purification
/ Plasmodium falciparum - pathogenicity
/ Proteins
/ Pupation
