Closer Look
Opinion: Synthetic biology accelerated life-saving Covid vaccines. It could also prove deadly
To understand the power of synthetic biology, just look at mRNA vaccines for Covid-19. But that technological feat comes with a price, Michael Specter, a staff writer at The New Yorker and a visiting scholar at the MIT Media Lab, writes in a STAT First Opinion. While quickly sharing the SARS-CoV-2 sequence sped up vaccine development and saved lives, he says open scientific exchange could also seed a deadly biological weapon.
"Making the sequence of just one dangerous virus public would create an information hazard," he says. "And the possibility of that happening is growing faster than any virus that only infects the body." Now that biology has become digital information, he argues, it's time to rein it in: "It is hard to imagine that a species that could figure out how to write, print, and alter DNA cannot figure out a reasonable approach to regulating it." Read more.
pHARmaSupply chain troubles hit cancer drugs, tooNationwide shortages of critical drugs are nothing new, but the dearth of medications, from anesthetics to saline for IVs, has hit a nearly five-year peak. That includes oncology drugs, many of which are low-cost, sterile, injectable generic medications that routinely save or extend the lives of children and adults. When these medicines are in short supply, that means agonizing decisions — and what physician Andrew Schuman recently called "a tragedy happening in slow motion." How did we get here? STAT contributor Jill Neimark describes an opaque pharmaceutical supply chain whose base ingredients are mostly made in China and India, subject to pandemic disruptions. Then there's the just-in-time approach to inventory in the U.S. But there are also heroes: hospital pharmacists working behind the scenes. "You shake every tree to go find the stuff a patient needs to stay alive," South Dakota pharmacist Ashley Hansen said. Read more.
Pharma
Air pollution fuels tumor growth in lung cancer for non-smokers
We breathe in more than 20 carcinogens every day, depending on where we live and work. A new study in Nature concludes that one kind of air pollution, fine particulate matter (PM2.5), promotes the growth of tumors in lung cancer. They focused on a type of lung cancer driven by EGFR mutations, which are more common in never-smokers or light smokers. In the four countries they studied — England, Taiwan, South Korea, and Canada — greater exposure to PM2.5 after three years was linked to more cases of lung cancer with EGFR mutations.
Using mouse models and human tissues to understand the mechanism at work, they found that PM2.5 pollution, which can travel deep into the lung, triggered an influx of immune cells and the release of inflammatory signaling molecules. Together, they aggravated existing cancer mutations, possibly awakening dormant mutated cells. The finding suggests inflammation could be a target for preventive therapies.
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