Prognostic value of a hypoxia-related microRNA signature in patients with colorectal cancer
Autor: | Yongmei Yang, Ailin Qu, Chen Li, Qi Wu, Xin Zhang, Chuanxin Wang, Zhaogang Dong, Lili Wang, Lutao Du |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Oncology
Adult Male Aging medicine.medical_specialty hypoxia microRNA signature Colorectal cancer colorectal cancer Kaplan-Meier Estimate nomogram Internal medicine microRNA medicine Humans Hypoxia Survival analysis Aged Proportional Hazards Models Receiver operating characteristic Proportional hazards model business.industry Gene Expression Profiling Area under the curve Computational Biology High-Throughput Nucleotide Sequencing Cell Biology prediction Nomogram Middle Aged medicine.disease Prognosis Gene Expression Regulation Neoplastic MicroRNAs ROC Curve Cohort Female business Colorectal Neoplasms Transcriptome Research Paper |
Zdroj: | Aging (Albany NY) |
ISSN: | 1945-4589 |
Popis: | Hypoxia has been particularly associated with poor prognosis in cancer patients. Recent studies have suggested that hypoxia-related miRNAs play a critical role in various cancers, including colorectal cancer (CRC). In the present study, we found 52 differentially expressed miRNAs in HT-29 cells under hypoxic conditions versus normoxic conditions by analyzing the profiles of miRNAs. Using Cox model, we developed a hypoxia-related miRNA signature consisting of four miRNAs, which could successfully discriminate high-risk patients in the Cancer Genome Atlas (TCGA) training cohort (n=381). The prognostic value of this signature was further confirmed in the TCGA testing cohort (n=190) and an independent validation cohort composed of formalin-fixed paraffin-embedded clinical CRC samples (n=220), respectively. Multivariable Cox regression and stratified survival analysis revealed this signature was an independent prognostic factor for CRC patients. Time-dependent receiver operating characteristic (ROC) analysis showed that the area under the curve (AUC) of this signature was significantly larger than that of any other clinical risk factors or single miRNA alone. A nomogram was constructed for clinical use, which incorporated both the miRNA signature and clinical risk factors and performed well in the calibration plots. Collectively, this novel hypoxia-related miRNA signature was an independent prognostic factor, and it possessed a stronger predictive power in identifying high-risk CRC patients than currently used clinicopathological features. |
Databáze: | OpenAIRE |
Externí odkaz: |