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Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
Published on: June 15, 2016
Oncogenic microRNAs in the genesis of leukemia and lymphoma
Yanyan Pan, Mei Meng, Gaochuan Zhang
1Cyrus Tang Hematology Center, Soochow University, 199 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China. quanshengzhou@yahoo.com.
Abstract:
Emerging evidence has shown that microRNAs (miRNAs) can act as oncogenes in the initiation and progression of leukemia and lymphoma. Aberrant expression of oncogenic miRNAs, including miR-155, miR-17-92, miR-21, miR-125b, miR-93, miR-143-p3, miR-196b, and miR-223 promotes leukemogenesis through increasing the leukemic stem/progenitor cell population, promoting cell proliferation, blocking cell differentiation, and diminishing cell apoptosis. In addition, abnormal expression of oncogenic miRNAs, such as miR-155, miR-17-92, the miR15a/16-1 cluster, miR21, miR34a, and miR125b has been implicated in lymphomagenesis. Notably, miR- 155 and miR-17-92 profoundly changed the gene expression signatures and signal transduction pathways in various hematopoietic cells, and triggered leukemogenesis and lymphomagenesis. Therefore, miRNAs play an important role in the genesis of leukemia and lymphoma. Accordingly, oncogenic miRNAs may serve as diagnostic and prognostic factors for patients with leukemia or lymphoma, and could be used as targets for novel anti-leukemia and anti-lymphoma drug discovery.
Insights
Oncogenic microRNAs (miRNAs) drive leukemia and lymphoma development by affecting cell growth and survival. These miRNAs show potential as diagnostic markers and therapeutic targets for blood cancers.
Area of Science:
- Molecular Biology
- Oncology
- Hematology
Background:
- MicroRNAs (miRNAs) are increasingly recognized for their roles in cancer development.
- Aberrant miRNA expression is implicated in the pathogenesis of hematological malignancies like leukemia and lymphoma.
Purpose of the Study:
- To review the role of oncogenic miRNAs in the initiation and progression of leukemia and lymphoma.
- To explore the potential of miRNAs as diagnostic, prognostic, and therapeutic targets in these cancers.
Main Methods:
- Literature review of studies investigating miRNA expression and function in leukemia and lymphoma.
- Analysis of specific oncogenic miRNAs (e.g., miR-155, miR-17-92) and their impact on cellular processes.
Main Results:
- Specific miRNAs (e.g., miR-155, miR-17-92, miR-21, miR-125b) promote leukemogenesis by affecting stem cell populations, proliferation, differentiation, and apoptosis.
- These oncogenic miRNAs are also implicated in lymphomagenesis, altering gene expression and signaling pathways in hematopoietic cells.
- miR-155 and miR-17-92 significantly impact gene expression and signaling, driving both leukemogenesis and lymphomagenesis.
Conclusions:
- MicroRNAs play a critical role in the genesis of leukemia and lymphoma.
- Oncogenic miRNAs represent promising diagnostic and prognostic biomarkers for patients.
- Targeting oncogenic miRNAs offers a potential strategy for novel anti-leukemia and anti-lymphoma drug development.
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