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microRNA-22 can regulate expression of the long non-coding RNA MEG3 in acute myeloid leukemia
Hongxia Yao1, Pei Sun2, Mengling Duan1
1Department of Hematology, Hainan General Hospital, Haikou, Hainan 570311, P.R. China.
Aim:
Acute myeloid leukemia (AML) is the most common blood tumor with poor prognosis. At present, the research found that the pathogenesis of AML is related to many factors, such as recurrent somatic mutations and gene expression and epigenetic changes, however, the molecular mechanism of AML is still unclear. Long non-coding RNA MEG3 is a newly found tumor suppressor and plays a very important role in the regulation of a variety of tumor formation and progression. Studies found that the MEG3 expression was significantly decreased in AML. However, to date, it is not clear the cause of its abnormal expression. Therefore, the molecular mechanism of AML is urgently needed to study the molecular mechanism of AML.
Methods:
The different expression level of MEG3, TET2, miR-22-3p, miR-22-5p in AML was detected by real-time quantification PCR. MEG3, TET2, miR-22-3p, miR-22-3p expression cell pools in K562 cells was used to interfering and TET2, MEG3 TET2, relations with miR-22-3p, miR-22-5p. The effect of AML cell on proliferation was evaluated by TET2 lower expression.
Results:
1. The lower expression of MEG3 and TET2 in AML cell lines was detected by RT-qPCR. 2. The stable MEG3, TET2 overexpression cell pools in K562 cells was successful established. 3. After transfection, MTT assay revealed that cell growth was significantly increased in AML cell lines transfected with TET2 compared with controls.
Conclusions:
Our findings suggested that MEG3 is significantly down regulated in AML cell lines.
Insights
Long non-coding RNA MEG3 is significantly decreased in acute myeloid leukemia (AML). This study investigated the molecular mechanisms behind this downregulation, crucial for understanding AML progression and developing new therapies.
Area of Science:
- Oncology
- Molecular Biology
- Gene Regulation
Background:
- Acute myeloid leukemia (AML) is a prevalent blood malignancy with a poor prognosis.
- The molecular mechanisms underlying AML pathogenesis, including genetic and epigenetic alterations, remain incompletely understood.
- Long non-coding RNA MEG3, a known tumor suppressor, is downregulated in AML, but the reasons for this are unclear.
Purpose of the Study:
- To investigate the molecular mechanism of abnormal MEG3 expression in acute myeloid leukemia (AML).
- To explore the role of MEG3 and TET2 in AML cell proliferation and their relationship with specific microRNAs.
Main Methods:
- Real-time quantitative PCR (RT-qPCR) was used to detect the expression levels of MEG3, TET2, miR-22-3p, and miR-22-5p in AML.
- Stable MEG3 and TET2 overexpression cell pools were established in K562 cells for functional studies.
- Cell proliferation was assessed using MTT assays following gene manipulation.
Main Results:
- Downregulation of MEG3 and TET2 was confirmed in AML cell lines via RT-qPCR.
- Successful establishment of stable MEG3 and TET2 overexpressing K562 cell lines.
- Overexpression of TET2 led to a significant increase in AML cell proliferation.
Conclusions:
- MEG3 expression is significantly downregulated in AML cell lines.
- Further research is needed to elucidate the precise molecular mechanisms driving AML.