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2018 ; 18
(1
): 641
Nephropedia Template TP
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p300 promotes proliferation, migration, and invasion via inducing
epithelial-mesenchymal transition in non-small cell lung cancer cells
#MMPMID29879950
Hou X
; Gong R
; Zhan J
; Zhou T
; Ma Y
; Zhao Y
; Zhang Y
; Chen G
; Zhang Z
; Ma S
; Chen X
; Gao F
; Hong S
; Luo F
; Fang W
; Yang Y
; Huang Y
; Chen L
; Yang H
; Zhang L
BMC Cancer
2018[Jun]; 18
(1
): 641
PMID29879950
show ga
BACKGROUND: Histone acetyltransferase p300 is a crucial transcriptional
coactivator and has been implicated as a poor prognostic factor in human cancers.
However, little is known about the substantial functions and mechanisms of p300
in NSCLC proliferation and distant metastasis. METHODS: We constructed p300
down-regulated and up-regulated cell lines through RNAi and recombinant plasmid
transfection. Cell Counting Kit-8 assays were used to test the cell proliferation
and confirmed by colony formation assays. Wound healing assays and transwell
chamber assays were used to test the migration and invasion ability. Based upon
these results, we measured the epithelial markers and mesenchymal markers after
regulating p300 expression to explore epithelial-mesenchymal transition as a
potential mechanism of p300 promoting NSCLC metastasis. RESULTS: In NSCLC cells
NCI-H1975 and NCI-H1993, down-regulation of p300 leads to inhibition of cell
proliferation and colony formation. Cells with reduced p300 expression also
demonstrate inhibited migration and invasion ability. Contrarily, up-regulation
of p300 significantly enhanced the proliferation, colony formation, migration and
invasion ability of NCI-H460. Importantly, further investigation shows that
decreased p300 expression is associated with reduced expression of mesenchymal
markers and increased expression of epithelial markers, while up-regulated p300
expression correlated with decreased expression of epithelial markers and
increased expression of mesenchymal markers. CONCLUSIONS: As a crucial tumor
promoter, p300 promotes cell proliferation, migration, and invasion in NSCLC
cells. Epithelial-mesenchymal transition is a potential mechanism of p300
promoting NSCLC metastasis.