The Urinary Microbiome: Implications in Bladder Cancer Pathogenesis and Therapeutics

Area of Science:

• Urology
• Microbiology
• Oncology

Background:

• The bladder was traditionally considered sterile, but recent research indicates a resident microbiome.
• The role of this bladder microbiome in urothelial cell carcinoma (UCC) remains largely undefined.

Purpose of the Study:

• To review existing literature on the urinary and gastrointestinal microbiomes concerning urothelial cell carcinoma.
• To explore the potential implications of the bladder microbiome in UCC pathogenesis, diagnosis, and treatment.

Main Methods:

• Literature review synthesizing current research on the bladder and gut microbiomes.
• Analysis of studies investigating the association between microbial communities and UCC.

Main Results:

• The bladder microbiome may influence UCC development and progression.
• The urinary microbiome shows potential as a noninvasive biomarker for UCC.
• Microbiome alterations could impact the efficacy of immunotherapy treatments like bacillus Calmette-Guerin (BCG).

Conclusions:

• The non-sterile bladder microbiome has significant implications for understanding UCC.
• Further research is needed to optimize methods for characterizing the bladder microbiome and its clinical relevance.
• Targeting the microbiome may offer novel therapeutic strategies for urothelial cell carcinoma.