Stearoyl-CoA desaturases regulate intestinal stem and progenitor cell metabolism and function in response to nutrient abundance.

Stearoyl-CoA desaturases are essential for intestinal stem cell function, with their inhibition reducing stem cell proliferation and impairing tissue regeneration in mice.

• Why it matters: Understanding how nutrient-driven lipid metabolism influences intestinal stem cells is crucial for developing therapies for gut injury and inflammatory diseases, yet the underlying metabolic mechanisms remain unclear.
• What they did: The study used pharmacological inhibition and genetic deletion of Scd1 and Scd2 in mouse intestinal organoids and in vivo models, revealing disrupted lipid desaturation, ER stress, and decreased stem cell numbers.
• The result: Loss of SCD activity compromised epithelial regeneration after injury, highlighting their role in maintaining intestinal homeostasis and suggesting potential targets for enhancing tissue repair.