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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Exp+Clin+Cancer+Res
2018 ; 37
(1
): 169
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Long non-coding RNA TPT1-AS1 promotes cell growth and metastasis in cervical
cancer via acting AS a sponge for miR-324-5p
#MMPMID30045766
Jiang H
; Huang G
; Zhao N
; Zhang T
; Jiang M
; He Y
; Zhou X
; Jiang X
J Exp Clin Cancer Res
2018[Jul]; 37
(1
): 169
PMID30045766
show ga
BACKGROUND: Increasing studies confirmed that abnormal lncRNAs expression play a
critical role in cervical cancer (CC) development and progression. LncRNA
TPT1-AS1, a novel lncRNA, its role and underlying mechanisms involved in CC
remain largely unknown. METHODS: Colony formation, EdU and Transwell assays were
used to determine colony formation, proliferation, migration and invasion in
vitro. The subcutaneous tumor model and tail vein injection lung metastasis model
were performed to check tumor growth and metastasis in vivo. Luciferase activity
and RIP experiment were carried out to determine the interaction between
miR-324-5p and TPT1-AS1. RESULTS: We demonstrated for the first time that
TPT1-AS1 expression was up-regulated in CC tissues and cell lines. High TPT1-AS1
was significantly correlated with adverse prognostic characteristics and poor
survival. TPT1-AS1 overexpression and knockdown experiments revealed that
TPT1-AS1 promoted cell colony formation, proliferation, migration, invasion and
EMT progression of CC cells in vitro and in vivo. The underlying mechanism
indicated that TPT1-AS1 functioned as an endogenous sponge for miR-324-5p in CC
cells. Gain- and loss- experiment confirmed that miR-324-5p inhibited cell colony
formation, proliferation, migration, invasion and EMT progression of CC cells,
and mediated the biological effects of TPT1-AS1. Further investigations confirmed
that SP1 was a direct target of miR-324-5p and mediated the effects of TPT1-AS1
and miR-324-5p in CC. CONCLUSIONS: We demonstrated for the first time that
TPT1-AS1 as an oncogenic lncRNA in CC progression and as a potential target for
CC cure.