Yufei Gao

Jilin University, Yung-chi, Jilin Sheng, China

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    ABSTRACT: OBJECTIVE To observe the effect of phenylacetate on the expression of RNA editing deaminase ADAR2 mRNA in glioma cells. METHODS Primary glial cells from human brain tissue and glioma U-251MG cells were cultured. The expression of ADAR2 mRNA was detected by a semiquantitative reverse transcription-polymerase chain reaction (RT-PCR). The levels of ADAR2 mRNA expression before and after treatment with phenylacetate were tested by RT-PCR and image analysis. The level of ADAR2 gene expression was presented as the ratio expression rate (RER) of ADAR2 gene/β-actin based on computer image analysis. RESULTS The ADAR2 mRNA displayed mild expression in brain glial cells, and a high expression level in high-grade malignant U-251MG glioma cells. Computer image analysis showed that the RERs of the ADAR2 gene in the U-251MG cells before and after treatment with 4.0, and 5.0 mM phenylacetate for 8 h were 100.0, 73.5, 60.3, respectively. The expression of ADAR2 mRNA was decreased by phenylacetate in glioma U-251MG cells. CONCLUSION Phenylacetate can decrease the expression of ADAR2 mRNA in glioma cells, suggesting that phenylacetate, as a drug, may act on the course of RNA editing in gliomas.
    No preview · Article · Feb 2006 · Chinese Journal of Clinical Oncology