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Senolytic Treatment Improve Small Intestine Regeneration in Aging.

Qing-Tian Luo1, Yuan-Chun Ye2, Wei-Ming Guo3

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Senolytic therapy with dasatinib and quercetin (D+Q) rejuvenates the aging gut. This treatment improved intestinal structure and function in elderly mice, offering a potential strategy for age-related decline.

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Area of Science:

  • Gerontology
  • Gastroenterology
  • Cellular Senescence

Background:

  • Aging leads to decreased intestinal villi and crypts, impairing nutrient absorption.
  • Cellular senescence contributes to age-related functional decline in various tissues, including the gut.

Purpose of the Study:

  • To investigate the senolytic combination of dasatinib and quercetin (D+Q) for its effects on the aging intestinal tract.
  • To assess D+Q's impact on intestinal structure, cellular senescence markers, and nitric oxide production in aged mice.

Main Methods:

  • Administration of a senolytic combination (D+Q) to elderly mice.
  • Analysis of intestinal villi and crypt morphology.
  • Assessment of senescence markers (p21, p16, Ki67) and apoptotic cells.
  • Measurement of nitric oxide (NO) levels.

Main Results:

  • D+Q treatment reduced expression of senescence markers (p21, p16, Ki67) and apoptotic cells.
  • Significant increase in villi height and crypt number observed post-D+Q treatment.
  • Enhanced nitric oxide (NO) production in aged mice following D+Q administration.

Conclusions:

  • D+Q therapy effectively alleviates age-related intestinal senescence in mice.
  • This senolytic approach shows potential for improving intestinal function and structure in aging populations.
  • The study provides a model for evaluating interventions against gut aging.