01/20/2025
The intestine is the most highly regenerative organ in the human body. In fact, it regenerates its lining every 5-7 days.
Here's what to know:
The human intestine replaces its epithelial lining every five to seven days. This rapid renewal is crucial, as the intestine endures constant stress while digesting food, absorbing nutrients, and expelling waste.
A study published in Cell Stem Cell reveals that mature intestinal cells, rather than dormant stem cells, play a surprising role in this process. Researchers discovered that when working stem cells in the intestinal crypts are depleted, mature cells undergo dedifferentiation, transforming back into stem cells to replenish the population.
This finding challenges previous assumptions about intestinal regeneration, which focused on dormant stem cells stepping in during times of need.
Led by Dr. Ramesh Shivdasani of the Harvard Stem Cell Institute, the research deepens our understanding of tissue organization and regeneration. The ability of mature cells to revert to stem cells could have far-reaching implications for regenerative medicine and therapies for intestinal disorders. By unraveling how these processes work at a cellular level, scientists may pave the way for innovative treatments that harness the body’s natural ability to heal.
Source 1) https://courses.lumenlearning.com/suny-ap2/chapter/the-stomach/
Source 2) https://news.harvard.edu/gazette/story/2017/07/understanding-how-the-intestine-replaces-and-repairs-itself/
