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Published on: April 29, 2022
Proteomic study on gender differences in aging kidney of mice
Hanna Amelina1, Susana Cristobal
1Department of Biochemistry and Biophysics, Stockholm University, Sweden. Hanna.Amelina@dbb.su.se
Proteome Science
|April 11, 2009
Summary
This study reveals sex differences in aging mouse kidneys using proteomics. Key protein expression changes indicate increased oxidative stress and altered enzyme activity, offering insights into kidney aging mechanisms.
Area of Science:
- Gerontology
- Nephrology
- Proteomics
Background:
- Investigates age-related changes in kidney function.
- Focuses on sex-based differences in the aging process.
Purpose of the Study:
- To analyze sex differences in the aging kidney proteome of mice.
- To identify protein expression patterns associated with kidney aging.
Main Methods:
- Utilized subfractionation and 2-DE (two-dimensional electrophoresis) for proteomic analysis.
- Employed MALDI-TOF MS (matrix assisted laser desorption ionisation time-of-flight mass spectrometry) for protein identification.
- Analyzed kidney samples from male and female CD1-Swiss mice at 28, 52, and 76 weeks of age.
Main Results:
- Detected 55 age-related protein spots (22 in males, 33 in females).
- Identified a common protein expression signature (PES) of aging comprising 8 spots.
- Observed increased oxidative and proteolytic proteins, and decreased glycolytic proteins and antioxidant enzymes.
Conclusions:
- Provides insights into gender-specific kidney aging mechanisms.
- Highlights the utility of proteomics in studying age-related protein expression changes.
- Suggests potential for understanding kidney aging and improving kidney selection for transplantation.
