Eight-plex iTRAQ labeling and quantitative proteomic analysis for human bladder cancer.

Area of Science:

• Oncology
• Proteomics
• Biomarker Discovery

Background:

• Bladder cancer is a prevalent global malignancy.
• Early detection is crucial for improved patient outcomes.
• Proteomic techniques offer novel avenues for biomarker identification.

Purpose of the Study:

• To evaluate the effectiveness of iTRAQ labeling and quantitative proteomics for differential protein analysis in bladder cancer tissues.
• To identify potential protein biomarkers for early detection and therapeutic targeting.

Main Methods:

• Utilized eight-plex iTRAQ labeling for quantitative proteomic analysis.
• Analyzed protein expression differences between normal and bladder cancer tissues.
• Validated findings using mass spectrometry and Western Blot.

Main Results:

• Identified and quantified 1627 proteins.
• Detected significant expression changes in 35 proteins.
• Confirmed upregulation of scaffold attachment factor B (SafB) and GTPase RAN binding protein 1 (RanBP1) in low-grade bladder cancer tissues.

Conclusions:

• Scaffold attachment factor B (SafB) and GTPase RAN binding protein 1 (RanBP1) are potential predictive and diagnostic biomarkers for bladder cancer.
• These proteins may serve as therapeutic targets for novel drug discovery in bladder cancer treatment.