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Differential Post-Translational Modifications of Proteins in Bladder Ischemia
Han-Pil Choi1, Jing-Hua Yang2, Kazem M Azadzoi3
1Proteomics Laboratory, VA Boston Healthcare System, Boston, MA 02130, USA.
Biomedicines
|January 23, 2024
Summary
Bladder ischemia, a potential cause of lower urinary tract symptoms (LUTS), involves altered protein modifications. These changes impact key proteins, potentially driving cellular stress and dysfunction.
Area of Science:
- Urology
- Proteomics
- Biochemistry
Background:
- Bladder ischemia is increasingly recognized as a factor in lower urinary tract symptoms (LUTS).
- Previous work indicated that ischemic changes in the bladder involve differential protein expression and post-translational modifications (PTMs).
Purpose of the Study:
- To conduct an in-depth analysis of a proteomic dataset to further characterize protein PTMs in bladder ischemia.
- To investigate the impact of ischemia-induced PTMs on specific protein groups within the bladder proteome.
Main Methods:
- In-depth analysis of a previously reported proteomic dataset from bladder ischemia.
- Characterization of differential formation of non-coded amino acids (ncAAs) resulting from PTMs.
Main Results:
- Proteomic analysis detected differential PTMs, including ncAAs, in bladder ischemia.
- Contractile proteins, stress response proteins, and cell signaling proteins were significantly impacted by ischemia.
- Ischemia-induced PTMs affected signaling pathways and protein structural integrity.
Conclusions:
- Differential protein PTMs in bladder ischemia may contribute to cellular stress and smooth muscle cell sensitization.
- These findings suggest PTMs play a role in the development of LUTS.
- The study provides a basis for identifying biomarkers for bladder dysfunction and developing new therapeutic targets.
