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[Investigation of PRAM1 Expression Features and Their Clinical Significance in AML via Gene Expression Microarray Database].
Zhongguo Shi Yan Xue Ye Xue za Zhi 2018 April
OBJECTIVE: To study the clinical phenotype and its prognostic value of PRAM1 in patients with acute myeloid leukemia(AML).
METHODS: Based on the gene expression microarray platform of 486 AML cases, the PRAM1 expression phenotypes were summarized in all of AML subtypes. The PRAM1 expression features were explored in every differentiation stage of hematocytes through normal human stem cell chips and bone marrow gene expression microarray. The clinical drugs which could up-regulate PRAM1 expression in AML cell lines should be found out.
RESULTS: The PRAM1 expression was the richest in the inv(16) AML and the lowest in the t(15;17)M3, almost the same in the other subtypes of AML. By the classification of molecular abnormalities, PRAM1 expression was more in the panel of CN-AML with CEBPAdm than the other two panels. Interestingly, high/low expression of PRAM1 could be re-classified in the CN-AML, and the EFS is statistically significant. It was proven again that PRAM1 is more expressed in the mature granulocytes. Finally, it was confirmed that decitabine and the chidamide could up-regulate PRAM1 expression in AML cell lines, and chidamide effect is better.
CONCLUSION: PRAM1 expression is the lowest in t(15;17) M3 and the highest in inv(16) AML. The high expression of PRAM1 is a sign for favorable prognosis in the CN-AML. PRAM1 is more expressed in mature granulocytes, chidamide can up-regulate PRAM1 expression in AML cell lines.
METHODS: Based on the gene expression microarray platform of 486 AML cases, the PRAM1 expression phenotypes were summarized in all of AML subtypes. The PRAM1 expression features were explored in every differentiation stage of hematocytes through normal human stem cell chips and bone marrow gene expression microarray. The clinical drugs which could up-regulate PRAM1 expression in AML cell lines should be found out.
RESULTS: The PRAM1 expression was the richest in the inv(16) AML and the lowest in the t(15;17)M3, almost the same in the other subtypes of AML. By the classification of molecular abnormalities, PRAM1 expression was more in the panel of CN-AML with CEBPAdm than the other two panels. Interestingly, high/low expression of PRAM1 could be re-classified in the CN-AML, and the EFS is statistically significant. It was proven again that PRAM1 is more expressed in the mature granulocytes. Finally, it was confirmed that decitabine and the chidamide could up-regulate PRAM1 expression in AML cell lines, and chidamide effect is better.
CONCLUSION: PRAM1 expression is the lowest in t(15;17) M3 and the highest in inv(16) AML. The high expression of PRAM1 is a sign for favorable prognosis in the CN-AML. PRAM1 is more expressed in mature granulocytes, chidamide can up-regulate PRAM1 expression in AML cell lines.
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