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What is Gene Expression?01:42

What is Gene Expression?

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Transcriptome analysis identifies a robust gene expression program in the mouse intestinal epithelium on aging.

Juri Kazakevych1, Elena Stoyanova1, Anke Liebert1,2

  • 1Babraham Institute, Cambridge, CB22 3AT, UK.

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|July 20, 2019
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Summary
This summary is machine-generated.

Aging impacts the mouse intestinal epithelium transcriptome, with few genes changing expression. Key changes include increased chemokine receptor Ccr2 and stereocilin, and decreased ribosome subunit Rps4l, showing overall gene expression robustness.

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Area of Science:

  • Gastroenterology
  • Aging Research
  • Molecular Biology

Background:

  • The intestinal epithelium constantly regenerates, driven by stem cells.
  • The impact of aging on the intestinal transcriptome is not well understood.
  • Understanding age-related changes is crucial for maintaining tissue function.

Purpose of the Study:

  • To investigate age-related changes in the mouse intestinal stem cell and enterocyte transcriptome.
  • To identify specific genes whose expression is altered with aging.
  • To assess the overall robustness of intestinal gene expression in aged mice.

Main Methods:

  • Transcriptomic analysis of sorted intestinal stem cells and enterocytes from mice.
  • Validation of candidate gene expression in middle-aged versus old-aged mice.
  • Analysis of gene expression changes in the intestinal epithelium.

Main Results:

  • Identified candidate genes showing altered expression with aging.
  • Consistent upregulation of chemokine receptor Ccr2 (Ccr2) and stereocilin (Strc).
  • Dramatic decrease in ribosome subunit Rps4l expression; overall few genes differentially expressed.

Conclusions:

  • Murine intestinal epithelium gene expression demonstrates remarkable robustness to old age.
  • Specific genes like Ccr2, Strc, and Rps4l show age-dependent expression changes.
  • Despite some changes, the overall transcriptome remains largely stable, suggesting resilience.