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Quantitative Proteomics of Urinary Bladder Cancer Cell Lines Identify UAP1 as a Potential Therapeutic Target
Vinuth N Puttamallesh1,2, Barnali Deb1,3, Kirti Gondkar1,2
1Institute of Bioinformatics, International Technology Park, Bangalore 560066, India.
Abstract:
Bladder carcinoma (BC) incidence and mortality rates are increasing worldwide. The development of novel therapeutic strategies is required to improve clinical management of this cancer. Aberrant protein expression may lead to cancer initiation and progression. Therefore, the identification of these potential protein targets and limiting their expression levels would provide alternative treatment options. In this study, we utilized a liquid-chromatography tandem mass spectrometry-based global proteomics approach to identify differentially expressed proteins in bladder cancer cell lines. A total of 3913 proteins were identified in this study, of which 479 proteins were overexpressed and 141 proteins were downregulated in 4 out of 6 BC cell lines when compared with normal human urothelial cell line (TERT-NHUC). We evaluated the role of UDP-N-acetylhexosamine pyrophosphorylase (UAP1) in bladder cancer pathogenesis. The silencing of UAP1 led to reduction in proliferation, invasion, colony formation and migration capability of bladder cancer cell lines. Thus, our study reveals UAP1 as a promising therapeutic target for bladder cancer.
Insights
Researchers identified UDP-N-acetylhexosamine pyrophosphorylase (UAP1) as a key protein in bladder cancer. Silencing UAP1 reduced cancer cell growth and spread, highlighting UAP1 as a potential therapeutic target for bladder carcinoma.
Area of Science:
- Oncology
- Proteomics
- Molecular Biology
Background:
- Bladder carcinoma (BC) incidence and mortality are rising globally, necessitating new therapeutic strategies.
- Aberrant protein expression is implicated in cancer initiation and progression.
- Identifying and targeting such proteins offers potential alternative treatment options for bladder cancer.
Purpose of the Study:
- To identify differentially expressed proteins in bladder cancer using a global proteomics approach.
- To investigate the role of UDP-N-acetylhexosamine pyrophosphorylase (UAP1) in bladder cancer pathogenesis.
- To evaluate UAP1 as a potential therapeutic target for bladder carcinoma.
Main Methods:
- Global proteomics analysis using liquid-chromatography tandem mass spectrometry.
- Comparison of protein expression profiles between bladder cancer cell lines and normal human urothelial cells.
- Functional evaluation of UAP1 by silencing its expression in bladder cancer cell lines.
Main Results:
- 3913 proteins were identified; 479 were overexpressed and 141 downregulated in 4 out of 6 BC cell lines.
- Silencing UAP1 significantly reduced proliferation, invasion, colony formation, and migration of bladder cancer cells.
- UDP-N-acetylhexosamine pyrophosphorylase (UAP1) was identified as a significantly overexpressed protein in bladder cancer.
Conclusions:
- UAP1 plays a critical role in bladder cancer progression.
- Targeting UAP1 can inhibit bladder cancer cell growth and metastasis.
- UAP1 represents a promising therapeutic target for bladder carcinoma treatment.
