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. 2019 Mar 26;20(3):705-710.
doi: 10.31557/APJCP.2019.20.3.705.

Hypoxia-Inducible Factor1-Α (HIF1α) and Vascular Endothelial Growth Factor-A (VEGF-A) Expression in De Novo AML Patients

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Hypoxia-Inducible Factor1-Α (HIF1α) and Vascular Endothelial Growth Factor-A (VEGF-A) Expression in De Novo AML Patients

Mohammad Jabari et al. Asian Pac J Cancer Prev. .

Abstract

Background: Bone marrow hypoxia can promote leukemia progression in human cases of acute myeloid leukemia (AML). In addition, low oxygen tension is able to regulate the expression of different genes involved in malignancy. In this study, we hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF-A) genes were assessed as principal regulators of hypoxia in do novo AML patients. Methods: Peripheral blood and bone marrow samples were collected from 57 AML patients and 17 normal control subjects with informed consent. Expression of HIF1α and VEGF-A was then evaluated using quantitative real-time PCR (Q-Real time PCR) and data were analyzed with SPSS 16. Result: HIF1α and VEGF-A showed overexpression in AML patients compared to normal controls (P <0.0001 and P<0.005, respectively). The expression level of HIF1α was significantly higher in AML-M3 cases versus AML-non M3 cases. Furthermore, there was a positive correlation between HIF1α and VEGF-A ( P <0.0001 and r = 0.497). Conclusion: Adding to the many studies on the role of hypoxia in solid tumors, our data indicate that HIF1a and VEGF-A overexpression also occurs in AML patients. We consider that this is possibly involved in leukemic cell growth and therefore could be a promising target for clinical control.

Keywords: Acute myeloid leukemia; hypoxia; HIF1α; VEGF.

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Figures

Figure 1
Figure 1
Relative Expression of HIF1α and VEGF-A in 57 AML Patients and 17 Healthy Patients was Measured from Ct Values and Normalized against a Reference Gene (ABL). A) A significant difference (P < 0.0001) between HIF1α expression in AML patients and healthy patients were identified. A relative HIF1α expression level of 12.61 ± 3.25 (SD) was measured in AML patients in comparison to 2.46 ± 0.33 (SD) in the normal control group. B) A significant difference (P < 0.005) between VEGF-A expression in AML patients and healthy patients were also identified. A relative VEGF-A expression level of 5.04 ± 0.76 (SD) was measured in AML patients in comparison to 2.003 ± 0.24 (SD) in the normal control group
Figure 2
Figure 2
Expression of HIF1α and VEGF Genes in Patients with APL
Figure 3
Figure 3
Statistical Analysis by Means of Spearman test Reveals Dependence and Relation between the Expression of HIF1α and VEGF-A. A) Correlation between HIF1a and VEGF-A in 57 AML patients was determined to be positive and significant (P <0.0001 r = 0.497

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