Does the Urinary Proteome Reflect ccRCC Stage and Grade Progression?

Area of Science:

• Urology
• Oncology
• Proteomics
• Biochemistry

Background:

• Urine analysis provides a non-invasive window into kidney physiology and disease.
• Clear cell Renal Cell Carcinoma (ccRCC) classification relies on post-surgical staging, but outcomes remain heterogeneous.
• Novel molecular indicators are needed to predict ccRCC progression and improve patient stratification.

Purpose of the Study:

• To investigate the association between the urinary proteome and the staging and grading of ccRCC.
• To identify potential urinary protein biomarkers for ccRCC progression and clinical outcome prediction.

Main Methods:

• Label-free proteomics was employed to analyze the urine proteome of 44 ccRCC patients.
• Mass spectrometry (MS) data was utilized to identify proteins with altered abundance.
• Clinicopathological data, including ccRCC stage and grade, was correlated with proteomic findings.

Main Results:

• Several urinary proteins exhibited altered abundance correlating with ccRCC clinicopathological stratification.
• A panel of dysregulated proteins was identified, showing a strong relationship with ccRCC stage and grade.
• These findings suggest the potential of MS-based urinomics in ccRCC assessment.

Conclusions:

• Urinary proteomics (urinomics) can identify protein markers associated with ccRCC progression.
• MS-based urinomics may serve as a valuable complementary tool for ccRCC staging and grading.
• This approach holds promise for improving the non-invasive diagnosis and surveillance of kidney cancer.