Gene-drive technology

About Gene-drive technology:

• A gene drive is a type of genetic engineering technique that modifies genes.
• This technology was conceived by Austin Burt, a professor at Imperial College London.
• This technique could be an effective way to eradicate nuisance species, such as malaria-causing mosquitoes. 
• Under this technique, mosquitoes will selectively inherit some genes rather than the inheritance to follow the rules of Mendelian genetics.
• In this, a protein cuts the mosquito’s DNA at a part that doesn’t encode a particular sequence in the genome.
• This triggers a natural mechanism in the cell containing the DNA to repair it and forces the cell to incorporate a sequence called the drive sequence into the damaged portion.

Recent development

• Researchers at Imperial College London genetically enhanced a gene expressed in the midgut of mosquitoes to secrete two antimicrobial substances called magainin 2 and melittin.
• They are detrimental to the Plasmodium parasite’s development in the midgut and also reduce the lifespan of female mosquitoes.
• Computational modelling studies have suggested that this approach could significantly disrupt malaria transmission.