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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An artificial intelligence-based analysis suggests a third group of ancient hominins likely interbred with human ancestors, according to Popular Mechanics.

In Science this week: reduction in bee phylogenetic diversity, and more.

The New York Times Magazine looks into paleogenomics and how it is revising what's know about human history, but also possibly ignoring lessons learned by archaeologists.

The Economist reports on Synthorx's efforts to use expanded DNA bases they generated to develop a new cancer drug.