ArticleHematology reports2011
Differential effects of sumoylation on the activities of CCAAT enhancer binding protein alpha (C/EBPα) p42 versus p30 may contribute in part, to aberrant C/EBPα activity in acute leukemias.
Article in Hematology reports, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 11 citations in OpenAlex.
- A review of C/EBP α: a potential novel target for solid tumor intervention.Journal of translational medicine · 2025Review
- Diagnostic and Therapeutic Implications of the SUMOylation Pathway in Acute Myeloid Leukemia.Cancers · 2025Review
- Sumoylation of CCAAT-enhancer-binding protein α inhibits lung differentiation in Bronchopulmonary Dysplasia model rats.Journal of cellular and molecular medicine · 2020Article
- The SUMO Pathway in Hematomalignancies and Their Response to Therapies.International journal of molecular sciences · 2019Review
- [Roles of CCAAT enhancer binding protein α in acute myeloblastic leukemia].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2018Review
- [Dynamic expression and role of SUMO-modified C/EBPα in preterm rats with bronchopulmonary dysplasisa induced by hyperoxia exposure].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2018Article
- Functional roles of C/EBPα and SUMO‑modification in lung development.International journal of molecular medicine · 2017Article
- C/EBPα in normal and malignant myelopoiesis.International journal of hematology · 2015Review
- Up-regulation of translation eukaryotic initiation factor 4E in nucleophosmin 1 haploinsufficient cells results in changes in CCAAT enhancer-binding protein α activity: implications in myelodysplastic syndrome and acute myeloid leukemia.The Journal of biological chemistry · 2012Article
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
Abstract
In this study, we have examined the role of post-translational modification of the myeloid master regulator C/EBPα by small ubiquitin-related modifier (SUMO). We have used transient transfection analysis, oligonucleotide pulldown assays and chromatin immuno-precititation in all-trans retinoic acid (ATRA)-inducible promyelocytic cell lines MPRO and NB4. We demonstrate that sumoylated wild-type p42-C/EBPα is associated with negative regulation of the myeloid specific lactoferrin (LF) gene in early myeloid cells and that a reduction in p42-C/EBPα sumoylation coincides with expression of the LF gene in maturing myeloid cells. In the acute promyelocytic leukemia cell line NB4 however, sumoylated p42 remains persistently bound to the LF promoter following ATRA-induction. This correlates with lack of lactoferrin expression in these cells. Changes in sumoylation status of C/EBPα thus appear to contribute to a switch that regulates transcriptional activity of this master regulator during normal neutrophil development. We also demonstrate that sumoylation of the AML associated dominant negative p30-C/EBPα isoform does not alter transactivation activity of the LF promoter. This may be because the p30 C/EBPα isoform binds to the LF promoter much less efficiently than its full length counterpart. Our data suggest that the activity of p42-C/EBPα in the developing neutrophil is more sensitive to changes in sumoylation than the p30 isoform. This difference may contribute to the leukemogenic potential of p30-C/EBPα.
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