The value of urinary exosomal microRNA‐21 in the early diagnosis and prognosis of bladder cancer

• Published in: The Kaohsiung journal of medical sciences Vol. 40; no. 7; pp. 660 - 670
• Main Authors: Yang, Fu‐Kan, Tian, Chao, Zhou, Lin‐Xiong, Guan, Tian‐Yu, Chen, Gui‐Liu, Zheng, Yi‐Ying, Cao, Zheng‐Guo
• Format: Journal Article
• Language: English
• Published: BP, Asia Wiley Publishing Asia Pty Ltd 01.07.2024; John Wiley & Sons, Inc; Wiley
• Subjects: Biomarkers; Biopsy; Bladder cancer; Cellular biology; diagnosis; Independent sample; Males; Metastasis; MicroRNAs; microRNA‐21; prognosis; Proteins; Sample size; Tumors; urinary exosome; Urine; Urogenital system; United Kingdom > UK; China; Germany; microRNA‐21; diagnosis; urinary exosome; prognosis; bladder cancer
• ISSN: 1607-551X; 2410-8650; 2410-8650
• DOI: 10.1002/kjm2.12845

Bladder cancer (BC) poses high morbidity and mortality, with urinary exosomal microRNA (miR)‐21 showing potential value in its diagnosis and prognosis, and we probed its specific role. We prospectively selected 116 BC patients and 116 healthy volunteers as the BC and control groups, respectively. BC urinary exosomal miR‐146a‐5p, miR‐93‐5p, miR‐663b, miR‐21, and miR‐4454 relative expression levels were assessed. The correlations between clinical indexes and urinary exosomal miR‐21, prognostic value of miR‐21, and diagnostic value of the five candidate miRNAs, urine cytology, and miRNA joint diagnostic panel for BC and urinary exosomal miR‐21, miR‐4454, and urine cytology for Ta‐T1 and T2‐T4 stage BC were analyzed. Urinary exosomal miR‐146a‐5p, miR‐93‐5p, miR‐663b, miR‐21, and miR‐4454 were highly expressed in BC patients. miR‐146a‐5p, miR‐93‐5p, miR‐663b, miR‐21, miR‐4454, miRNA combined diagnostic panel, and urine cytology had certain diagnostic value for BC, with miR‐21, miR‐4454, and miRNA co‐diagnostic panel showing the highest diagnostic value. Collectively, urinary exosomal miR‐21 was closely related to Tumor‐Node‐Metastasis staging and grading in BC patients. Urinary exosomal miR‐21 had high diagnostic value for BC and Ta‐T1 and T2‐T4 stage BC, and had high predictive value for BC poor prognosis, providing an effective indicator for the occurrence, development, and prognostic assessment of BC.