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Updated: May 26, 2026
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Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells
Published on: February 21, 2018
C/EBPα dysregulation in AML and ALL.
1Division of Pediatric Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA.
Critical Reviews in Oncogenesis
|December 14, 2011
Summary
CCAAT/enhancer binding protein alpha (C/EBPα) is vital for myeloid development but often dysregulated in acute myeloid leukemia (AML). Mutations in CEBPA define a distinct AML subtype with a favorable prognosis, particularly with biallelic mutations.
Area of Science:
- Hematopoiesis and Cancer Biology
- Molecular Regulation of Cell Differentiation
Background:
- CCAAT/enhancer binding protein alpha (C/EBPα) is a key regulator of granulocyte and monocyte differentiation.
- C/EBPα is frequently dysregulated in acute myeloid leukemia (AML) due to genetic and epigenetic alterations.
- Specific CEBPA gene mutations are found in 10-15% of AML patients with intermediate-risk cytogenetics.
Purpose of the Study:
- To review the role of C/EBPα in normal hematopoietic development.
- To discuss the molecular mechanisms underlying CEBPA-mutated AML.
- To examine the aberrant expression of C/EBP family members in pre-B acute lymphoblastic leukemia (ALL).
Main Methods:
- Review of existing literature on C/EBPα function in hematopoiesis.
- Analysis of molecular pathways involved in CEBPA-mutated AML.
- Examination of genetic alterations and their impact on C/EBPα function.
Main Results:
- N-terminal CEBPA mutations yield a dominant-negative C/EBPαp30 isoform.
- C-terminal CEBPA mutations disrupt dimerization and DNA binding.
- Biallelic CEBPA mutations in AML patients are associated with a favorable clinical outcome.
- Aberrant C/EBP family expression occurs in a subset of pre-B ALL.
Conclusions:
- Dysregulation of C/EBPα is a significant factor in AML pathogenesis.
- Mutated CEBPA defines a distinct AML subtype with improved prognosis.
- Understanding C/EBPα's role is crucial for targeted AML and ALL therapies.
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