This Week in PNAS

In this week's PNAS Early Edition, researchers at the Sanford-Burnham Medical Research Institute, along with their collaborators at Columbia University, show that deletion of DDB1 "abrogates the self-renewing capacity of hepatocytes, resulting in compensatory proliferation of DDB1-expressing hepatocytes." In addition, the team shows that "constitutive stimulation of this regeneration process leads to development of hepatocellular carcinoma, which surprisingly contains no disruption of the DDB1 gene." The authors suggest this indicates a "cell-non-autonomous role of DDB1 inactivatio

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Helix customers can purchase apps that interpret different aspects of their genome, Technology Review reports.

The New York Times reports that a number of companies and research institutes are pursuing gene therapies.

Salmon with shorter telomeres survive to make the trip back to their river homes, New Scientist reports.

In PLOS this week: vaginal microbiome composition, population patterns of Chagas-carrying Rhodnius ecuadoriensis, and more.