CCAAT/enhancer binding protein ¦Á gene expression in Egyptian patients with acute myeloid leukemia

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• 作者：Neemat Kassem ; Abd El-Gawad Fahmy ; Mohamed Desoky ; Nashwa Medhat ; Hamdy M. Zawam
• 关键词：AML ; CEBP¦Á ; Real-time PCR
• 刊名：Journal of the Egyptian National Cancer Institute
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：25
• 期：3
• 页码：115-120
• 全文大小：580 K

文摘

Background

Transcription factors play a crucial role in myeloid differentiation and lineage determination. Tumor suppressor protein C/EBPa is a key regulator of granulocytic differentiation whose functional inactivation has become a pathophysiological signature of myeloid leukemia. Given the role that CCAAT/enhancer binding protein ¦Á (C/EBP ¦Á) plays in myelopoiesis, we anticipated that their expression might be disrupted in myeloid neoplasms.

Purpose

To estimate the expression of C/EBP¦Á mRNA in patients with acute myeloid leukemia and correlate its expression with the pathogenesis of the disease.

Patients and methods

Forty AML patients and 20 age and sex matched healthy controls were included in the study. Blood samples of patients and controls were analyzed for CEBP¦Á mRNA expression by quantitative RT-real time PCR using TaqMan technology & ¦¤¦¤Ct method for calculation of gene expression.

Results

Twenty-nine (72.5 % ) patients out of the 40 showed low expression levels of CEBP¦Á mRNA below the cutoff value with median of 0.19 (range:0-0.87). While eleven (27.5 % ) patients out of the 40 showed higher expression levels of CEBP¦Á above the cutoff value with median of 1.52 (range:1.07-2). Seven patients out of the 11 showed higher expression levels of CEBP¦Á mRNA belong to the M3 subtype of AML harboring the t(15;17) PML-RARa translocation.

Conclusion

We conclude that the majority of the AML patients analyzed, express low levels of C/EBPa mRNA. However, a subset of patients represented by the M3 subtype, express higher levels of C/EBPa.