期刊
ONCOGENE
卷 20, 期 28, 页码 3751-3756出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.onc.1204500
关键词
angiogenesis; VEGF; regulation; acidosis; pancreatic cancer
资金
- NCI NIH HHS [CA16672-23] Funding Source: Medline
The influence of acidosis on the expression of the vascular endothelial growth factor (VEGF) gene was determined, FG human pancreatic adenocarcinoma cells were incubated for various time periods in media at a physiologically relevant pH level (6.7-7.4), The expression of VEGF mRNA and protein secretion was inversely correlated with pH in a pH- and time-dependent manner. Transient acidosis also activated the VEGF promoter/enhancer luciferase reporter, which was consistent with an increased VEGF gene transcription rate and VEGF mRNA half-life. These data indicated that acidosis transcriptionally and posttranscriptionally regulates VEGF expression, suggesting that an acidic tumor microenvironment contributes to tumor angiogenesis and progression.
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