Topographic modification of the extracellular matrix precedes the onset of bladder cancer
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View abstract on PubMed
Summary
This summary is machine-generated.Collagen fiber changes in the bladder microenvironment precede and promote bladder cancer development. These topographic shifts in the extracellular matrix may help identify tissue prone to recurrence.
Area Of Science
- Oncology
- Biopathology
- Extracellular Matrix Research
Background
- Non-muscle invasive bladder cancer (NMIBC) has a high recurrence rate.
- The extracellular microenvironment, particularly collagen fiber topography, is altered in neoplastic conditions.
Purpose Of The Study
- To investigate topographic collagen changes across bladder cancer stages.
- To determine if these changes contribute to NMIBC development.
Main Methods
- Analysis of 71 clinical urothelial carcinoma samples.
- Evaluation of collagen fiber topography in rat bladder cancer models (BBN-induced and actinic cystitis + BBN).
- Histological assessment using hematoxylin-eosin staining.
Main Results
- Collagen fiber linearization increased with bladder cancer stage (Tis/Ta < T1 < T2).
- In preclinical models, collagen linearization increased with inflammation, atypia, and tumor presence.
- Actinic cystitis accelerated BBN-induced tumor onset, correlating with collagen changes.
Conclusions
- Topographic modifications of the extracellular microenvironment occur during pre-cancerous inflammation.
- Stromal reconfiguration may serve as a biomarker for identifying susceptible tissue and guiding treatment for bladder cancer recurrence.
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