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2015 ; 8
(6
): 6334-44
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KDM6B induces epithelial-mesenchymal transition and enhances clear cell renal
cell carcinoma metastasis through the activation of SLUG
#MMPMID26261509
Li Q
; Hou L
; Ding G
; Li Y
; Wang J
; Qian B
; Sun J
; Wang Q
Int J Clin Exp Pathol
2015[]; 8
(6
): 6334-44
PMID26261509
show ga
Clear cell renal cell carcinoma (ccRCC) is one of the most common kidney cancers;
epithelial-mesenchymal transition (EMT) is associated with carcinoma invasion and
metastasis. There have been several studies about the molecular regulation of
EMT, but the relationship between histone demethylase and EMT is little known.
Here, we reported KDM6B has high expression level in ccRCC and is positively
correlated with poor ccRCC prognosis. KDM6B, also known as JMJD3, is a histone
demethylase, can remove repressive histone H3K27me3 marks from chromatin, thereby
activating gene expression. We found that the knockdown of KDM6B could inhibit
ccRCC tumorigenesis in vitro; furthermore, KDM6B could induce EMT in ccRCC cells
by activating the expression of master transcription factor SLUG. ChIP assays
revealed that KDM6B stimulated SLUG expression by demethylate histone H3K27me3.
The knockdown of KDM6B strongly inhibited ccRCC cell invasion in vitro, while the
overexpression of KDM6B shown the opposite trend. Meanwhile, our analysis of the
ccRCC tissue found that KDM6B expression was significantly corresponded with
lymph node metastasis. Together, our data provide a novel epigenetic mechanism
regulating tumor cell invasion and EMT, and provide a biomolecule for ccRCC
diagnosis and prognosis.