Expression Level of Urinary MicroRNA-146a-5p Is Increased in Patients With Bladder Cancer and Decreased in Those After Transurethral Resection
| Autor: | Takahiro Ochiya, Kazuki Kitajima, Kouichirou Aida, Tatsuya Chikaraishi, Masahiro Hoshikawa, Yusuke Yoshioka, Miki Yoshiike, Hiroya Kudo, Hideo Sasaki, Yuichi Katsuoka, Nobuyoshi Kosaka, Shiari Nozawa, Wataru Usuba |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male 0301 basic medicine medicine.medical_specialty Urology Urinary system medicine.medical_treatment Urine Malignancy Nephrectomy 03 medical and health sciences 0302 clinical medicine Downregulation and upregulation Cell Line Tumor microRNA medicine Humans Aged Oligonucleotide Array Sequence Analysis Aged 80 and over Bladder cancer business.industry Middle Aged medicine.disease Up-Regulation Gene Expression Regulation Neoplastic Reverse transcription polymerase chain reaction MicroRNAs Treatment Outcome 030104 developmental biology Urinary Bladder Neoplasms Oncology 030220 oncology & carcinogenesis Female business |
| Zdroj: | Clinical Genitourinary Cancer. 14:e493-e499 |
| ISSN: | 1558-7673 |
| DOI: | 10.1016/j.clgc.2016.04.002 |
| Popis: | Background Bladder cancer is the most prevalent malignancy involving the urinary system and exhibits a markedly high recurrence rate. Therefore, reliable and noninvasive diagnostic and surveillance methods are desperately needed. Patients and Methods Candidate microRNAs (miRNAs) were selected from the miRNAs that were differentially expressed in bladder cancer cell lines (T24 and RT4) compared to normal ureteral epithelial tissue using miRNA-microarray analysis. The candidate miRNAs were validated by quantitative reverse transcription polymerase chain reaction assay using voided urine samples. Results We identified 3 miRNAs (miR-301b, -563, and -146a-5p) that demonstrated > 2-fold higher expression levels in cancer cell lines than in the normal ureteral epithelial tissue. Of these, only miR-146a-5p was consistently and significantly higher in urine samples from the patients with bladder cancer than in those from the normal individuals ( P = .0014). The patients with high-grade tumors exhibited significantly higher urinary miR-146a-5p levels than those with low-grade tumors, and the patients with invasive tumors tended to show higher urinary miR-146a-5p levels than those with noninvasive tumors. Elevated urinary miR-146a-5p levels in patients with bladder cancer were decreased to the normal level after transurethral resection of the tumors ( P = .0214). Conclusion Our study suggested that urinary miR-146a-5p might be useful as a new noninvasive diagnostic marker, therapeutic target, or anticancer agent for bladder cancer, as well as for increasing our understanding of cancer biology. |
| Databáze: | OpenAIRE |
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