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2017 ; 8
(16
): 26079-26089
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Long non-coding RNA PTENP1 functions as a ceRNA to modulate PTEN level by
decoying miR-106b and miR-93 in gastric cancer
#MMPMID28212532
Zhang R
; Guo Y
; Ma Z
; Ma G
; Xue Q
; Li F
; Liu L
Oncotarget
2017[Apr]; 8
(16
): 26079-26089
PMID28212532
show ga
Recent studies have shown that competing endogenous RNAs (ceRNAs) play an
important role in the regulation of gene expression, and participate in a wide
range of biological processes, including carcinogenesis. Long non-coding RNA
PTENP1, the pseudogene of PTEN tumor suppressor, has been reported to exert its
tumor suppressive function via modulation of PTEN expression in many
malignancies. However, whether a PTENP1~miRNA~PTEN ceRNA network exists and how
it functions in gastric cancer (GC) remains elusive. In order to identify and
characterize the PTENP1~miRNA~PTEN ceRNA network in GC, we first determined
PTENP1 levels in clinical GC samples and found that PTENP1 and PTEN were
concurrently downregulated in these samples. We further demonstrated that PTENP1
could act as a ceRNA to sponge miR-106b and miR-93 from targeting PTEN for
downregulation using a novel ceRNA in vitro gradient assay. Thus, we revealed a
tumor suppressive role of PTENP1 as ceRNA in GC and pinpointed the specific
miRNAs decoyed by PTENP1, highlighting the emerging roles of ceRNAs in the
biological regulation of GC cells and their possible clinical significance.