Journal
ACTA BIOCHIMICA ET BIOPHYSICA SINICA
Volume 47, Issue 12, Pages 997-1004Publisher
SCIENCE PRESS
DOI: 10.1093/abbs/gmv107
Keywords
pancreatic cancer; KDM4B; epithelial-mesenchymal transition; ZEB1; TGF-beta
Categories
Funding
- Specialized Research Fund for the Doctoral Program of Higher Education [20120071110063]
- Innovation Program of Shanghai Municipal Education Commission [14ZZ014]
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Lysine (K)-specific demethylase 4B (KDM4B) is a histone H3K9 demethylase and is reported to activate gene transcription through regulation of chromatin structures. Previous research has revealed that KDM4B plays special regulatory roles in colorectal, prostate and gastric cancers. However, its physiological role in pancreatic cancer remains largely unknown. In the present study, it is demonstrated KDM4B plays a crucial in epithelial-mesenchymal transition (EMT) in pancreatic cancer. siRNA mediated silencing of KDM4B inhibits cell migration, invasion and EMT. Moreover, KDM4B was demonstrated to epigenetically regulate the expression of ZEB1 in the TGF-beta-induced EMT process. In tumor tissues of pancreatic cancer patient, the protein level of KDM4B was positively correlated with ZEB1. In conclusion, our results suggested that KDM4B is a key mediator in EMT process, and may serve as an important prognostic marker and therapeutic target for the metastatic progression of human pancreatic cancer.
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