Two of our body’s natural defensins, HNP2 and HD5, might be a secret weapon against COVID-19, a new study reveals. These tiny peptides (mini-proteins) are produced by the immune system against germs.

Researchers from the University of Missouri used advanced computer simulations to view the interactions between the COVID virus and the defensins. The results indicate that HNP2 and HD5 could attach themselves to the virus’ spike protein, blocking it from locking onto your cells.

The defensins are also found in the lungs and gut, common places COVID attacks, which means they’re already stationed at the front lines.

The research team thinks defensins could be turned into something like a nasal spray or pill to help keep viruses at bay in the future.

This is not a cure — but is an interesting look into how our biology may inspire the next advancement in antiviral treatments. Lab tests are to follow.

The study was published in The Microbe.

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