Functional genomic analyses of IC/BPS patient subgroups: a pilot study.

Area of Science:

• Urology
• Molecular Biology
• Genomics

Background:

• Interstitial cystitis/bladder pain syndrome (IC/BPS) is a complex condition requiring better understanding of its pathophysiology.
• Patient stratification is crucial for targeted therapies in IC/BPS.

Purpose of the Study:

• To investigate molecular differences between distinct IC/BPS patient subgroups.
• To evaluate the influence of bladder capacity (BC) and Hunner's lesion (HL) on gene expression profiles in IC/BPS.

Main Methods:

• Molecular phenotyping using whole genome and microRNA expression arrays on bladder biopsies from IC/BPS patients.
• Comparative analysis of three subgroups: low BC without HL, low BC with HL, and non-low BC.

Main Results:

• Significant differences in miRNA and mRNA expression were identified based on BC and HL status.
• Low BC was associated with upregulated cell proliferation and inflammation markers.
• HL status correlated with distinct molecular signatures, including genes involved in bioenergetics and potential oxidative stress.

Conclusions:

• Molecular phenotyping effectively differentiates IC/BPS patient subgroups.
• Low BC and HL are key factors associated with distinct molecular profiles in IC/BPS.
• Findings suggest potential roles for inflammation, cell proliferation, bioenergetics, and oxidative stress in IC/BPS pathogenesis.