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Updated: May 30, 2026
10:25
Real-time Bioluminescence Imaging of Notch Signaling Dynamics during Murine Neurogenesis
Published on: December 12, 2019
Esco2 promotes neuronal differentiation by repressing Notch signaling.
Young-Eun Leem1, Hyun-Kyung Choi, Sung Yun Jung
1Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon, 440-746, Republic of Korea.
Cellular Signalling
|July 23, 2011
Summary
Esco2, linked to Roberts-SC phocomelia syndrome, regulates neurogenesis by inhibiting Notch signaling. This acetyltransferase promotes neuronal differentiation by attenuating Notch activity, impacting development.
Area of Science:
- Cell Biology
- Developmental Biology
- Genetics
Background:
- Esco2 is an acetyltransferase crucial for sister chromatid cohesion.
- Mutations in Esco2 cause Roberts-SC phocomelia (RBS) syndrome, a developmental disorder.
- RBS syndrome features growth retardation, limb defects, and craniofacial abnormalities.
Purpose of the Study:
- Investigate the role of Esco2 in neurogenesis.
- Determine the interaction between Esco2 and Notch signaling pathway components.
- Elucidate the mechanism by which Esco2 influences neuronal differentiation.
Main Methods:
- Co-immunoprecipitation to assess protein interactions.
- Reporter assays to measure transcriptional activity.
- Chromatin immunoprecipitation to analyze promoter binding.
- Cell differentiation assays using P19 and C17.2 cells.
- RNA interference (siRNA) for gene knockdown.
Main Results:
- Esco2 protein interacts with Notch but not CBF1.
- Esco2 represses Notch transactivational activity independently of its acetyltransferase function.
- Esco2 attenuates NICD-CBF1 binding to the Hes1 promoter, a Notch target gene.
- Overexpression of Esco2 promotes neuronal differentiation; Esco2 knockdown inhibits it.
- Esco2 overexpression counteracts Notch-mediated inhibition of neuronal differentiation.
Conclusions:
- Esco2 plays a significant role in neurogenesis.
- Esco2 promotes neuronal differentiation by attenuating Notch signaling.
- The findings provide insights into the molecular mechanisms of neurodevelopment and RBS syndrome.
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