This Week in PNAS

In the PNAS Early Edition this week, investigators in Japan show that miR-33, encoded by an intron of Srebp2, regulates HDL cholesterol in vivo. Using miR-33-deficient mice, the team found that "miR-33 repressed the expression of ATP-binding cassette transporter A1 protein, a key regulator of HDL synthesis, by mediating cholesterol efflux from cells to apolipoprotein A-I," they write.

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The Associated Press reports that the US government wasted $341,000 on travel by former Health and Human Services Secretary Tom Price.

Women who post YouTube science videos get more critical comments and more comments about their appearance than male video hosts, the New York Times reports.

The Wall Street Journal writes that participating in genetic research brings up the specter of past research ethics lapses for some African Americans.

In PLOS this week: sequences influencing yeast prion aggregation or degradation, dengue virus genetic variants affect transmission dynamics, and more.