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Updated: Nov 11, 2025
MicroRNA Based Liquid Biopsy: The Experience of the Plasma miRNA Signature Classifier MSC for Lung Cancer Screening
Published on: October 26, 2017
Plasma miR-6089 as potential diagnostic biomarker for retinoblastoma
Xiu-Hong Li1, An-Jie Shi1, Jia Li2
1Department Of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical Center of PLA, Army Medical University, No. 10, Changjiang Branch, Daping, Yuzhong District, Chongqing, 400042, China.
Objective:
The purpose of this study was to screen target miRNA related to RB and explore the expression levels of target miRNA in RB and its potential value of diagnosis.
Methods:
The Affymetrix GeneChip miRNA 4.0 Array was used to screen the differential miRNAs in the plasma of 5 RB patients before and after intravenous chemotherapy, and the most significant down-regulated miRNA was selected for target miRNA. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) is used to verify the expression levels of plasma target miRNA in 30 RB patients. Then, qRT-PCR was performed to further verify the expression of target miRNA in plasma of RB patients and RB tumor tissues. Finally, receiver-operating-characteristic (ROC) curve and the area under the ROC curve (AUC) were used to evaluate the diagnostic power of plasma target miRNA.
Results:
The miRNA Array obtain 8 core miRNAs, 1 up-regulated and 7 down-regulated, of which miR-6089 was the most significantly down-regulated. Plasma miR-6089 levels were significantly up-regulated in RB patients. Besides, in RB tumor tissues, miR-6089 levels were also obviously up-regulated. After intravenous chemotherapy, the expression of plasma miR-6089 was significantly decreased. Furthermore, ROC curve analysis showed that miR-6089 in the plasma had a good sensitivity and specificity for distinguishing RB from the healthy control group.
Conclusions:
MiR-6089 may be considered as a novel potential diagnostic biomarker for RB.
Trial Registration Number:
ChiCTR2000040154; date of registration: 2020/11/22; retrospectively registered.
