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2017 ; 24
(5
): 785-797
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Downregulation of Lnc-Spry1 mediates TGF-?-induced epithelial-mesenchymal
transition by transcriptional and posttranscriptional regulatory mechanisms
#MMPMID28186499
Rodríguez-Mateo C
; Torres B
; Gutiérrez G
; Pintor-Toro JA
Cell Death Differ
2017[May]; 24
(5
): 785-797
PMID28186499
show ga
Long non-coding RNAs (lncRNAs) are a class of regulatory genes that participate
in a wide range of biological processes, including proliferation, differentiation
and development, as well as in a broad spectrum of diseases. Although the role of
lncRNAs in TGF-?-induced epithelial-to-mesenchymal transition (EMT) has been well
established, little is known about the role of lncRNAs as immediate-early
regulators of EMT. Here lnc-Spry1 is identified as an immediate-early regulator
of EMT that is downregulated by TGF-?. It is also found that knockdown of
lnc-Spry1 promotes a mesenchymal-like phenotype and results in increased cell
migration and invasion. In addition, it is shown that lnc-Spry1 depletion
preferentially affects the expression of TGF-?-regulated gene targets. Moreover,
lnc-Spry1 associates with U2AF65 splicing factor, suggesting a role in
alternative splicing. Depletion of lnc-Spry1 induces, as TGF-?, isoform switching
of fibroblast growth factor receptors, resulting in FGF-2-sensitive cells. Taken
together, these results show that lnc-Spry1 could act as an early mediator of
TGF-? signaling and reveal different roles for a lncRNA in modulating
transcriptional and posttranscriptional gene expression.
|*RNA Processing, Post-Transcriptional
[MESH]
|*Transcription, Genetic
[MESH]
|Adaptor Proteins, Signal Transducing/*genetics/metabolism
[MESH]