Researchers from the Weizmann Institute of Science and the Hebrew University have revealed a surprising role for stem cells in immune defense, as detailed in a study published in Nature Immunology. The study found that intestinal stem cells, when infected by bacteria like Salmonella, accelerate their maturation and sacrifice their lives in a form of altruism to prevent prolonged infection and promote tissue regeneration. This mechanism, involving protein complexes called inflammasomes that act as "smoke detectors," challenges earlier beliefs that stem cells rely solely on surrounding immune cells for protection. The findings could have implications for understanding inflammatory diseases and cancer, particularly conditions like Crohn’s disease, which are linked to chronic inflammation and bacterial infections. Researchers hope that insights from this study will pave the way for new treatments.
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Link to original article source: https://wis-wander.weizmann.ac.il/life-sciences/facing-danger-maturity
