Inactivation of bone morphogenetic protein 2 may predict clinical outcome and poor overall survival for renal cell carcinoma through epigenetic pathways

Oncotarget
Yozo MitsuiHiroaki Shiina

Abstract

We investigated whether impaired regulation of bone morphogenetic protein-2 (BMP-2) via epigenetic pathways is associated with renal cell carcinoma (RCC) pathogenesis. Expression and CpG methylation of the BMP-2 gene were analyzed using RCC cell lines, and 96 matched RCC and normal renal tissues. We also performed functional analysis using BMP-2 restored RCC cells. A significant association of BMP-2 mRNA expression was also found with advanced tumor stage and lymph node involvement, while lower BMP-2 mRNA expression was significantly associated with poor overall survival after radical nephrectomy. In RCC cells, BMP-2 restoration significantly inhibited cell proliferation, migration, invasion, and colony formation. In addition, BMP-2 overexpression induced p21(WAF1/CIP1) and p27(KIP1) expression, and cellular apoptosis in RCC cells. BMP-2 mRNA expression was significantly enhanced in RCC cells by 5-aza-2'-deoxycitidine treatment. The prevalence of BMP-2 promoter methylation was significantly greater and BMP-2 mRNA expression was significantly lower in RCC samples as compared to normal kidney samples. Furthermore, a significant correlation was found between BMP-2 promoter methylation and mRNA transcription in tumors. Aberrant BMP...Continue Reading

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Citations

May 20, 2018·Molecular Diagnosis & Therapy·Brittany N Lasseigne, James D Brooks
Oct 10, 2019·International Journal of Cancer. Journal International Du Cancer·Shinichi UmedaYasuhiro Kodera
Mar 20, 2018·Frontiers in Endocrinology·Sheena L P ReganArun Dharmarajan
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Methods Mentioned

BETA
PCR
transfection
electrophoresis
Assay
protein assay

Software Mentioned

Image J
StatView

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