Published in:
01-12-2011 | Research Article
The association between non-Hodgkin lymphoma and methylation of p73
Authors:
Jing-Hong Pei, Sai-Qun Luo, Yan Zhong, Jiang-Hua Chen, Hua-Wu Xiao, Wei-Xin Hu
Published in:
Tumor Biology
|
Issue 6/2011
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Abstract
To investigate the effects of methylation of the p73 gene on the pathogenesis of non-Hodgkin lymphoma (NHL), the methylation status of the p73 gene promoter and the expression of p73 mRNA were examined in NHLs by methylation-specific polymerase chain reaction (MSP) and reverse transcription-polymerase chain reaction, respectively; p73 protein was detected by Western blotting analysis. Furthermore, the expression of p73 mRNA in NHL cells treated with 5-Aza-2′-deoxycytidine was analyzed. MSP results revealed that the promoter of p73 was methylated in 87.5% of NHLs but was not methylated in reactive hyperplasia lymph node samples. The expression of p73 mRNA was not detected in 83.33% of NHLs but was detected in all of the reactive hyperplasia lymph node samples. The p73 protein was not detected in 91.67% of NHLs but was detected in all of the reactive hyperplasia lymph node samples. The expression of p73 mRNA was detected in NHL cells treated with 5-Aza-2′-deoxycytidine. The inactivation of p73, predominantly by methylation, may be involved in the pathogenesis of NHLs.