This Week in Science

In Science Translational Medicine this week, US and German researchers publish data showing how neutrophils use a microRNA to protect against harmful lung inflammation. The work suggests that upregulating this miRNA — miR-223 — may be an effective strategy for treating acute respiratory distress syndrome. The scientists found that mice infected with methicillin-resistant Staphylococcus aureus could be protected against severe lung inflammation when treated with miR-233.

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The US Food and Drug Administration has new guidelines that enable some gene and cell therapies to undergo expedited review, according to the New York Times.

Using gene drives to control invasive species might be too risky, an initial advocate of the approach says.

Researchers have grown tumors in 3D cell cultures to better understand cancer, the Economist reports.

In Science this week: intellectual property experts argue patent battles such as the one over CRISPR are wasteful, and more.