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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 PLoS+One
2016 ; 11
(3
): e0152687
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Long Non-Coding RNA MALAT1 Mediates Transforming Growth Factor Beta1-Induced
Epithelial-Mesenchymal Transition of Retinal Pigment Epithelial Cells
#MMPMID27019196
Yang S
; Yao H
; Li M
; Li H
; Wang F
PLoS One
2016[]; 11
(3
): e0152687
PMID27019196
show ga
PURPOSE: To study the role of long non-coding RNA (lncRNA) MALAT1 in transforming
growth factor beta 1 (TGF-?1)-induced epithelial-mesenchymal transition (EMT) of
retinal pigment epithelial (RPE) cells. METHODS: ARPE-19 cells were cultured and
exposed to TGF-?1. The EMT of APRE-19 cells is confirmed by morphological change,
as well as the increased expression of alpha-smooth muscle actin (?SMA) and
fibronectin, and the down-regulation of E-cadherin and Zona occludin-1(ZO-1) at
both mRNA and protein levels. The expression of lncRNA MALAT1 in RPE cells were
detected by quantitative real-time PCR. Knockdown of MALAT1 was achieved by
transfecting a small interfering RNA (SiRNA). The effect of inhibition of MALAT1
on EMT, migration, proliferation, and TGF? signalings were observed. MALAT1
expression was also detected in primary RPE cells incubated with proliferative
vitreoretinopathy (PVR) vitreous samples. RESULTS: The expression of MALAT1 is
significantly increased in RPE cells incubated with TGF?1. MALAT1 silencing
attenuates TGF?1-induced EMT, migration, and proliferation of RPE cells, at least
partially through activating Smad2/3 signaling. MALAT1 is also significantly
increased in primary RPE cells incubated with PVR vitreous samples. CONCLUSION:
LncRNA MALAT1 is involved in TGF?1-induced EMT of human RPE cells and provides
new understandings for the pathogenesis of PVR.