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Embedded in the body’s mucosal surfaces, proteins called lectins bind to sugars found on cell surfaces

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Left: Intelectin-2 stabilizes the mucus layer on healthy tissue. Right: The protein neutralizes bacteria in an inflamed GI tract. COURTESY OF THE RESEARCHERS.

Intelectin-2 binds to a sugar molecule called galactose that is found on bacterial membranes, the team found, trapping the bacteria and hindering their growth; the trapped microbes eventually disintegrate, suggesting that the protein can kill them by disrupting their cell membranes.

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Summary

Embedded in the body’s mucosal surfaces, proteins called lectins bind to sugars found on cell surfaces. Because intelectin-2 can neutralize or eliminate pathogens such as Staphylococcus aureus and Klebsiella pneumoniae, which are often difficult to treat with antibiotics, it could someday be adapted as an antimicrobial agent, the researchers say. “Harnessing human lectins as tools to combat antimicrobial resistance opens up a fundamentally new strategy that draws on our own innate immune defenses,” Kiessling says.

Read full article at MIT Technology Review →