Next-generation gene drive for population modification of the malaria vector mosquito, <i>Anopheles gambiae</i>
Rebeca Carballar‐Lejarazú, Christian Ogaugwu, Taylor Tushar, Adam Kelsey, Thai Binh Pham, Jazmin Murphy, Hanno Schmidt, Yoosook Lee, Gregory C. Lanzaro, Anthony A. James
Abstract
gene ortholog producing a red-eye phenotype. Drive can achieve 98 to 100% in both sexes and full introduction was observed in small cage trials within 6 to 10 generations following a single release of gene-drive males. No genetic load resulting from the integrated transgenes impaired drive performance in the trials. Potential drive-resistant target-site alleles arise at a frequency <0.1, and five of the most prevalent polymorphisms in the guide RNA target site in collections of colonized and wild-derived African mosquitoes do not prevent cleavage in vitro by the Cas9/guide RNA complex. Only one predicted off-target site is cleavable in vitro, with negligible deletions observed in vivo. AgNosCd-1 meets key performance criteria of a target product profile and can be a valuable component of a field-ready strain for mosquito population modification to control malaria transmission.