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2015 ; 8
(10
): 12936-42
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gab.com Text
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Long non-coding RNA UCA1 may be a novel diagnostic and predictive biomarker in
plasma for early gastric cancer
#MMPMID26722487
Gao J
; Cao R
; Mu H
Int J Clin Exp Pathol
2015[]; 8
(10
): 12936-42
PMID26722487
show ga
Gastric cancer (GC) is one of the most common malignancies and ranks the second
leading cause of cancer death worldwide. The role of long non-coding RNAs
(lncRNAs) in the gastric cancer pathogenesis is largely unknown. The present
study is aimed to identify aberrantly expressed lncRNAs involved in the
progression of GC. 33 lncRNAs showed significantly differential expression levels
between gastric tumor samples and matched normal tissues from 5 pairs of samples
using microarray assay. LncRNAs were classified into different subgroups. The
expression levels of 4 lncRNAs: HIF1A-AS1, PVT1, CBR3-AS1 and UCA1 both in tumor
and plasma were further confirmed in 20 gastric patients by real-time PCR assay.
Then, the correlations between the tissue and plasma of these 4 lncRNA levels
were assessed. Our data show that there was a significantly positive correlation
of UCA1 expression levels between tumor tissues and plasma (r = 0.931).
Furthermore, the specificity and sensitivity of PVT-1 and UCA1 were evaluated by
receiver operating characteristic (ROC) curve. The results demonstrated that
plasma UCA1 provided the higher diagnostic performance for detection of GC (AUC =
0.928; P < 0.001) than PVT-1 (AUC = 0.731; P < 0.01). Taken together, our study
suggested that plasma UCA1 levels could be a promising candidate of noninvasive
biomarker for GC early diagnosis.