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Telomerase activity in malignant and benign bladder conditions
M P Mayfield1, T Shah, G M Flannigan
1Clinical Oncology Unit, University of Bradford, Bradford, BD7 1DP, UK.
International Journal of Molecular Medicine
|December 16, 1998
Summary
Telomerase activity is common in bladder tumors, particularly in higher-grade cancers. However, this enzyme is also found in non-malignant conditions, indicating it
Area of Science:
- Oncology
- Biochemistry
Background:
- Telomerase is a key enzyme involved in cellular immortalization.
- Its role and specificity in bladder cancer require further investigation.
Purpose of the Study:
- To determine telomerase activity in bladder tumors.
- To correlate telomerase activity with tumor grade.
- To assess telomerase expression in non-malignant bladder conditions.
Main Methods:
- Analysis of 52 patient specimens (bladder tumors, previous tumors, non-malignant pathology).
- Telomerase activity assessed using the telomerase repeat amplification protocol (TRAP assay) and ELISA.
Main Results:
- Telomerase activity detected in 80% of bladder tumors.
- Higher activity observed in moderate- to poorly-differentiated tumors (93%) versus well-differentiated (56%).
- Telomerase was also detected in 61% of inflammatory lesions and 14% of benign pathologies.
Conclusions:
- Telomerase is frequently detected in bladder tumors but is not specific to malignancy.
- A potential correlation exists between tumor grade and telomerase activity.
- Further research is needed to understand telomerase's role in bladder cancer.