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- W1938934141 abstract "There is an urgent need to elucidate the mechanistic links between obesity and colon cancer. Convincing evidence for the role of Lgr5(+) stem cells in colon tumorigenesis has been established; however, the influence of obesity on stem cell maintenance is unknown. We assessed the effects of high fat (HF) feeding on colonic stem cell maintenance during cancer initiation (AOM induced) and the responsiveness of stem cells to adipokine signaling pathways. The number of colonic GFP(+) stem cells was significantly higher in the AOM-injected HF group compared to the LF group. The Lgr5(+) stem cells of the HF fed mice exhibited statistically significant increases in cell proliferation and decreases in apoptosis in response to AOM injection compared to the LF group. Colonic organoid cultures from lean mice treated with an adiponectin receptor agonist exhibited a reduction in Lgr5-GPF(+) stem cell number and an increase in apoptosis; however, this response was diminished in the organoid cultures from obese mice. These results suggest that the responsiveness of colonic stem cells to adiponectin in diet-induced obesity is impaired and may contribute to the stem cell accumulation observed in obesity." @default.
- W1938934141 created "2016-06-24" @default.
- W1938934141 creator A5019568866 @default.
- W1938934141 creator A5024187649 @default.
- W1938934141 creator A5050863287 @default.
- W1938934141 date "2015-12-01" @default.
- W1938934141 modified "2023-10-15" @default.
- W1938934141 title "Obesity promotes colonic stem cell expansion during cancer initiation" @default.
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- W1938934141 doi "https://doi.org/10.1016/j.canlet.2015.10.001" @default.
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