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Published on: September 1, 2019
LncRNA MAFG-AS1-induced acute myeloid leukemia development via modulating miR-147b/HOXA9
Qiying Yao1, Li Zhang2, Zhengjuan Liu2
1College of Basic Medical Sciences, Dalian Medical University, Dalian, 116027, Liaoning, China.
Abstract:
Recent references discovered that lncRNAs acted roles in malignant cancer development. However, the role of MAFG-AS1 in acute myeloid leukemia (AML) development remains unknown. MAFG-AS1 and miR-147b were determined in AML cells and specimens using qRT-PCR assay. Cell proliferation was detected by CCK-8 analysis and flow cytometry was carried out to measure cell cycle. Luciferase reporter analysis was done to determine the mechanism of MAFG-AS1 and miR-147b. We noted that MAFG-AS1 was overexpressed in AML cells and in serum and bone narrow from AML compared with normal controls specimen. Elevated expression of MAFG-AS1 increased cell growth, cycle and EMT in AML cell HL-60 cell. MAFG-AS1 sponged miR-147b expression in HL-60 cell. Moreover, miR-147b was downregulated in AML cells and in serum and bone narrow from AML compared with normal control specimen. miR-147b was negatively correlated with MAFG-AS1 in the serum and bone narrow of AML cases. We illustrated that HOXA9 was one target of miR-147b and ectopic expression of MAFG-AS1 enhanced HOXA9 expression HL-60 cell. Forced expression of MAFG-AS1 induced cell growth, cycle, and EMT via promoting HOXA9. These data illustrated that MAFG-AS1 acted as one oncogenic gene and accelerated AML progression via modulating miR-147b/HOXA9 axis.
Insights
Long non-coding RNA MAFG-AS1 promotes acute myeloid leukemia (AML) progression by sponging miR-147b and upregulating HOXA9. MAFG-AS1 acts as an oncogene in AML development.
Area of Science:
- Molecular Biology
- Oncology
- Biochemistry
Background:
- Long non-coding RNAs (lncRNAs) are implicated in cancer development.
- The specific role of MAFG-AS1 in acute myeloid leukemia (AML) remains unclear.
Purpose of the Study:
- To investigate the function and mechanism of MAFG-AS1 in AML pathogenesis.
- To determine the relationship between MAFG-AS1, miR-147b, and HOXA9 in AML.
Main Methods:
- Quantitative real-time PCR (qRT-PCR) to assess gene expression.
- Cell counting kit-8 (CCK-8) assay and flow cytometry for cell proliferation and cycle analysis.
- Luciferase reporter assays to elucidate molecular interactions.
Main Results:
- MAFG-AS1 was significantly overexpressed in AML cells and patient samples.
- MAFG-AS1 promoted AML cell proliferation, cell cycle progression, and epithelial-mesenchymal transition (EMT).
- MAFG-AS1 sponged miR-147b, which was downregulated in AML, and HOXA9 was identified as a target of miR-147b.
Conclusions:
- MAFG-AS1 functions as an oncogene in AML.
- MAFG-AS1 accelerates AML progression by modulating the miR-147b/HOXA9 axis.
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