Are Mesenchymal Stem Cells a Promising Treatment for COVID-19?

As the first clinical data become available on treating coronavirus patients with the cells, scientists are equivocal about the rationale for the intervention.

Written byRuth Williams
| 5 min read

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A recent pilot study in China in which seven COVID-19 patients received intravenous infusions of donor mesenchymal stem cells—multipotent cells thought to have immunomodulatory capacities—indicates that the intervention was safe, and that the approach may improve patient outcomes. While all seven patients recovered, scientists are mixed in their opinions on the logic behind the approach and how well it truly performed.

On Sunday (April 5) the US Food and Drug Administraton approved mesenchymal stem cell (MSC) treatments for use in the very sickest COVID-19 patients under what’s known as expanded access compassionate use.

“The rationale for [the China] study is not clear [and] the results are . . . inconclusive in terms of how effective it is,” says developmental biologist and stem cell researcher Christine Mummery of Leiden University, who has no conflicts of interest to declare. “One should view it with a certain amount of ...

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  • ruth williams

    Ruth is a freelance journalist. Before freelancing, Ruth was a news editor for the Journal of Cell Biology in New York and an assistant editor for Nature Reviews Neuroscience in London. Prior to that, she was a bona fide pipette-wielding, test tube–shaking, lab coat–shirking research scientist. She has a PhD in genetics from King’s College London, and was a postdoc in stem cell biology at Imperial College London. Today she lives and writes in Connecticut.

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