A groundbreaking study led by the University of Texas at Arlington reveals that pythons, some of the world’s largest snakes, regenerate their intestines after prolonged fasting. This process, akin to human embryonic development and wound healing, could hold the key to treating gastrointestinal illnesses like Crohn’s or coeliac disease.
The study, published in Proceedings of the National Academy of Sciences, highlights similarities between human and python intestinal regeneration. Unlike humans, whose gut lining renews every 3–5 days, fasting pythons conserve energy by allowing their intestines to shrink, only to regenerate them rapidly after feeding. Within 48 hours of eating, python intestinal cells activate genes and proteins essential for regrowth, mirroring processes observed during early human development.
A key discovery involves BEST4+ cells, which aid in regenerating the python’s intestinal villi—tiny structures that increase the gut’s surface area for nutrient absorption. Though recently identified, BEST4+ cells in humans are linked to gastrointestinal health and diseases, including colorectal cancer and chronic inflammation. This research offers hope for new therapies targeting these cells.
The study also reveals parallels between python gut regeneration and human gut responses following Roux-en-Y gastric bypass surgery, a weight-loss procedure that alters metabolism and sometimes cures diabetes. Researchers suggest understanding the genes and pathways involved in this reprogramming could lead to non-invasive treatments for metabolic disorders.
Python regeneration involves biochemical pathways shared with humans, such as NRF2, which aids cell recovery after cancer treatments. This similarity underscores the potential for translating findings into therapies for diseases like short bowel syndrome, where the small intestine cannot absorb nutrients effectively.
While much remains to be studied, experts believe pythons can provide valuable models for gastrointestinal research. Their unique regenerative abilities could inspire innovative approaches to treating conditions previously considered untreatable.
“This research opens doors to understanding how humans might activate dormant regenerative capabilities,” says Dr. Stephen Badylak of the University of Pittsburgh. “It’s a fascinating step forward in regenerative medicine and metabolic disease therapy.”
By studying these extraordinary reptiles, scientists hope to uncover breakthroughs that could significantly improve human health.
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