Of Mice and MicroRNA

A new paper out of Harvard screened embryonic stem cells and found a factor called Lin-28 that inhibits Drosha, which usually cleaves the ends of miRNAs. Lin-28, though, only prevents the processing of miRNAs belonging to the let7 family. The authors suggest that Lin-28 then may prevent miRNA-mediated differentiation in stem cells and some cancers.

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As the UN ponders a ban on gene drives, one malaria researchers says there are less dramatic ways to fight the disease in Africa than unleashing GM mosquitoes on a whole continent.

In Nature this week: an improved reference genome of the Aedes aegypti mosquito, genomes of four species of truffles, and more.

The United Nations is to consider a ban on field testing gene drives at a meeting being held next week, Technology Review reports.

The Associated Press reports that gene-edited food may soon be for sale.