Background Malaria is a mosquito-borne disease caused by protozoan parasites of the genus Plasmodium. Despite significant declines in malaria-attributable morbidity and mortality over the last two decades, it remains a major public health burden in many countries. This underscores the critical need for improved strategies to prevent, treat and control malaria if we are to ultimately […]
Background Population suppression gene drive is currently being evaluated, including via environmental risk assessment (ERA), for malaria vector control. One such gene drive involves the dsxFCRISPRh transgene encoding (i) hCas9 endonuclease, (ii) T1 guide RNA (gRNA) targeting the doublesex locus, and (iii) DsRed fluorescent marker protein, in genetically-modified mosquitoes (GMMs). Problem formulation, the first stage of ERA, for environmental […]
Background DUYAO-JIEYAO encodes a toxin-antidote system that confers hybrid male sterility DUYAO interacts with OsCOX11 to trigger mitochondrial malfunction and cytotoxicity JIEYAO detoxifies DUYAO by rerouting DUYAO to the autophagosome for degradation DUYAO-JIEYAO forms a natural gene drive system that may promote speciation in rice Such a natural gene drive could be engineered to reduce […]
Background Malaria is among the world’s deadliest diseases, predominantly affecting Sub-Saharan Africa and killing over half a million people annually. Controlling the principal vector, the mosquito Anopheles gambiae, as well as other anophelines, is among the most effective methods to control disease spread. Here, we develop a genetic population suppression system termed Ifegenia (inherited female elimination […]
Background Novel genetic strategies for the malaria eradication agenda exploit Cas9/gRNA (guide RNA)-based autonomous gene-drive systems carrying antiparasite effector genes, and these effectively reduce prevalence and numbers of the human parasite, Plasmodium falciparum, in the African malaria mosquitoes, Anopheles gambiae and Anopheles coluzzii. Results from laboratory assessments of population gene-drive dynamics, transgene genetic loads, and parasite suppression efficacy informed modeling […]
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