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2017 ; 10
(ä): 1993-2002
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Long noncoding RNA NBAT-1 suppresses tumorigenesis and predicts favorable
prognosis in ovarian cancer
#MMPMID28435289
Yan C
; Jiang Y
; Wan Y
; Zhang L
; Liu J
; Zhou S
; Cheng W
Onco Targets Ther
2017[]; 10
(ä): 1993-2002
PMID28435289
show ga
Long noncoding RNA (lncRNA) has been proven to be involved in many biological
processes in ovarian cancer (OC). However, the mechanism still remains unknown.
In this study, we screened significantly downregulated NBAT-1, which has been
proven to play a significant role in breast cancer, clear cell renal cell
carcinoma, and neuroblastoma, but not in OC, in two independent datasets with
relatively more samples (GSE18520 and GSE38666) from Gene Expression Omnibus. We
found that lncRNA NBAT-1 was obviously downregulated in OC tissue compared to
normal ovarian tissue (P<0.001) which was free of OC, and the detected levels of
NBAT-1 were associated with the International Federation of Gynecology and
Obstetrics stage and tumor size guidelines. Moreover, it has been shown that
lower levels of NBAT-1 predict poor outcomes of OC. In order to investigate the
functional role of NBAT-1, pcDNA-NBAT-1 and empty vector were transfected into
TOV112D and OVCAR-3 cell lines. Overexpressed NBAT-1 significantly inhibited cell
proliferation, invasion, and migration in both TOV112D and OVCAR-3 cell lines.
Finally, Western blot assay indicated that NBAT-1 may exert its function by
targeting the ERK1/2 and AKT signaling pathways. In addition, tumor formation
growth assay showed that overexpressed NBAT-1 significantly suppresses tumor
growth in vivo. In conclusion, our study suggests that NBAT-1 acts as an
anti-oncogene in the development of OC.