Gene drive mosquitoes can aid malaria elimination by retarding Plasmodium sporogonic development

Author:

Hoermann Astrid1ORCID,Habtewold Tibebu1ORCID,Selvaraj Prashanth2ORCID,Del Corsano Giuseppe1ORCID,Capriotti Paolo1,Inghilterra Maria Grazia1ORCID,Kebede Temesgen M.1ORCID,Christophides George K.1ORCID,Windbichler Nikolai1ORCID

Affiliation:

1. Department of Life Sciences, Imperial College London, London SW7 2AZ, UK.

2. Institute for Disease Modeling, Bill and Melinda Gates Foundation, Seattle, WA 98109, USA.

Abstract

Gene drives hold promise for the genetic control of malaria vectors. The development of vector population modification strategies hinges on the availability of effector mechanisms impeding parasite development in transgenic mosquitoes. We augmented a midgut gene of the malaria mosquito Anopheles gambiae to secrete two exogenous antimicrobial peptides, magainin 2 and melittin. This small genetic modification, capable of efficient nonautonomous gene drive, hampers oocyst development in both Plasmodium falciparum and Plasmodium berghei . It delays the release of infectious sporozoites, while it simultaneously reduces the life span of homozygous female transgenic mosquitoes. Modeling the spread of this modification using a large-scale agent-based model of malaria epidemiology reveals that it can break the cycle of disease transmission across a range of transmission intensities.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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