This Week in PNAS

Using ChIP-seq to define TEAD4 target genes genome-wide to decipher how their transcription is maintained in the trophectoderm in a preimplantation mouse embryo model, a team led by researchers at the University of Kansas Medical Center found that a "lack of nuclear localization of TEAD4 impairs the TE [trophectoderm]-specific transcriptional program in inner blastomeres, thereby allowing their maturation toward the ICM [inner cell mass] lineage." In a paper published online in advance in

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23andMe's Anne Wojcicki ponders DNA and what it means to be human in a New York Times essay.

A new estimate places the last universal common ancestor to life on Earth as living 3.9 billion years ago, Inverse reports.

In PNAS this week: retinitis pigmentosa gene therapy, role of microbiome in growth stunting, and more.

Bloomberg reports that researchers and drug companies are modeling anti-obesity treatments after the rare genetic condition essential fructosuria.