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Cell-Free DNA Integrity Analysis in Urine Samples
Published on: January 5, 2017
Epigenetic markers as promising prognosticators for bladder cancer
1Department of Urology, College of Medicine, Seoul National University, Seoul, Korea. wjkim@chungbuk.ac.kr
Summary
Detecting DNA methylation in urine offers a more sensitive approach for bladder cancer recurrence surveillance than traditional methods. This epigenetic marker may improve early detection and treatment of urological cancers.
Area of Science:
- Oncology
- Epigenetics
- Urology
Background:
- Transitional cell carcinomas of the urinary bladder exhibit diverse characteristics.
- Current bladder cancer recurrence surveillance relies on cystoscopy and urinary cytology, which have subjective limitations.
- Promoter hypermethylation of CpG islands is linked to bladder cancer development and prognosis.
Purpose of the Study:
- To explore the feasibility and sensitivity of detecting DNA methylation in voided urine for bladder cancer surveillance.
- To investigate the potential of hypermethylated genes as biomarkers for urological cancers.
- To highlight the clinical relevance of epigenetic silencing of tumor suppressor genes.
Main Methods:
- Analysis of promoter hypermethylation of CpG islands in bladder cancer.
- Detection of DNA methylation markers in voided urine samples.
- Evaluation of methylation markers as alternatives to conventional urine cytology.
Main Results:
- Detection of DNA methylation in voided urine may be more sensitive than conventional urine cytology.
- A panel of hypermethylated genes could potentially screen for various urological cancers in urine.
- Epigenetic silencing of tumor suppressor genes is a clinically relevant phenomenon.
Conclusions:
- DNA methylation detection in urine presents a promising, sensitive method for bladder cancer surveillance.
- Methylation markers may offer advantages over conventional molecular markers for bladder cancer treatment and prevention.
- Epigenetic biomarkers hold potential for broader application in screening urological malignancies.