The “glue” holding your cells together has a surprising second job
Researchers have discovered that the E-cadherin protein complex, which normally acts as cellular glue, also helps epithelial cells engulf and remove dead cells. This finding provides new insights into how tissues maintain health and may explain failures in the body's cleanup process that lead to chronic inflammation.
Why it matters
Understanding this mechanism could lead to new therapeutic approaches for managing chronic inflammatory diseases.
A protein best known for helping cells and tissues stay connected has another unexpected role. Researchers have found that it also helps epithelial cells, which form continuous sealed layers throughout the body, engulf nearby dead cells.
The discovery could have implications for chronic inflammation. Debris from dying cells is a major contributor to inflammatory responses, so understanding how tissues remove that material may reveal new clues about what happens when the cleanup process fails.
The study, published in Nature Communications , focuses on the E-cadherin complex. This molecular system includes E-cadherin along with three additional proteins. Together, they connect epithelial cells lining areas such as the skin, gut and airways, giving tissues the structural strength they need to remain intact. In these tissues, each cell connects to E-cadherin molecules on neighboring cells.
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