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Published on: September 7, 2021
Differential proteomics in the aging Noble rat ventral prostate.
Ying Wai Lam1, Neville N C Tam, James E Evans
1Department of Environmental Health, Division of Environmental Genetics and Molecular Toxicology, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Proteomics
|June 12, 2008
Summary
Prostate aging involves changes in protein expression, particularly related to oxidative stress and cellular processes. This study reveals novel proteins associated with prostate aging in rats, offering new insights into age-related prostatic diseases.
Area of Science:
- Proteomics
- Aging Research
- Urology
Background:
- Prostatic diseases incidence rises with age, potentially due to declining androgen support.
- The molecular mechanisms driving prostate aging are not fully understood.
- Understanding prostate aging is crucial for addressing age-related urological conditions.
Purpose of the Study:
- To investigate the proteomic changes associated with prostate aging in Noble rats.
- To identify differentially expressed proteins in the ventral prostate (VP) of aged versus young rats.
- To uncover novel protein markers and pathways involved in prostate aging.
Main Methods:
- Utilized Isotope-Coded Affinity Tag (ICAT) and Mass Spectrometry (MS) to analyze VP proteomes.
- Compared protein expression profiles between 3-month-old (young) and 16-month-old (aged) Noble rats.
- Verified key protein expression changes using Western blot analysis.
Main Results:
- Identified 472 proteins in the rat ventral prostate with high confidence.
- Discovered 34 proteins with significant expression changes ( >2-fold increase or >1.7-fold decrease) in aged VPs.
- Found that many differentially expressed proteins are involved in oxidative stress, protein biosynthesis, and intracellular trafficking, with novel associations to prostate aging.
Conclusions:
- This is the first proteomic study of the aging rat prostate.
- Identified novel proteins and functional categories implicated in prostate aging.
- Findings provide a foundation for future research into the mechanisms of prostate aging and related diseases.
