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Efficient population modification gene-drive rescue system in the malaria mosquito Anopheles stephensi.

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TLDR
A recoded gene-drive rescue system for population modification of the malaria vector, Anopheles stephensi, that relieves the load in females caused by integration of the drive into the kynurenine hydroxylase gene by rescuing its function is developed.
Abstract
Cas9/gRNA-mediated gene-drive systems have advanced development of genetic technologies for controlling vector-borne pathogen transmission. These technologies include population suppression approaches, genetic analogs of insecticidal techniques that reduce the number of insect vectors, and population modification (replacement/alteration) approaches, which interfere with competence to transmit pathogens. Here, we develop a recoded gene-drive rescue system for population modification of the malaria vector, Anopheles stephensi, that relieves the load in females caused by integration of the drive into the kynurenine hydroxylase gene by rescuing its function. Non-functional resistant alleles are eliminated via a dominantly-acting maternal effect combined with slower-acting standard negative selection, and rare functional resistant alleles do not prevent drive invasion. Small cage trials show that single releases of gene-drive males robustly result in efficient population modification with ≥95% of mosquitoes carrying the drive within 5-11 generations over a range of initial release ratios.

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Citations
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Journal ArticleDOI

A confinable home and rescue gene drive for population modification

TL;DR: In this paper, a confinable population modification home-and-rescue (HomeR) drive was proposed for population modification in Drosophila targeting an essential gene.
Journal ArticleDOI

Design and analysis of CRISPR-based underdominance toxin-antidote gene drives.

TL;DR: The results suggest that CRISPR TA underdominance drive systems could allow for the design of flexible and potentially confinable gene drive strategies, and provide a wide range of invasion threshold frequencies and options for both population modification and suppression.
Journal ArticleDOI

Symbionts and gene drive: two strategies to combat vector-borne disease.

TL;DR: In this paper , Bhatt et al. reviewed the latest developments in both symbionts and gene drive-based methods, as well as distinctions and obstacles relating to these promising technologies.
References
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Journal ArticleDOI

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