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In Vitro SUMOylation Assay to Study SUMO E3 Ligase Activity
Published on: January 29, 2018
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PML nuclear bodies: assembly and oxidative stress-sensitive sumoylation
Umut Sahin1, Hugues de Thé, Valérie Lallemand-Breitenbach
1a University Paris Diderot; Sorbonne Paris Cité ; Hôpital St. Louis ; Paris , France.
Nucleus (Austin, Tex.)
|December 9, 2014
Summary
PML Nuclear Bodies (NBs) are dynamic structures involved in cellular homeostasis and disease. Stress enhances their sumoylation activity, offering potential therapeutic targets for various conditions.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- PML Nuclear Bodies (NBs) are dynamic cellular structures.
- NBs and the PML protein are linked to cellular stress responses.
- PML was initially considered a tumor suppressor but is now known to regulate cellular homeostasis.
Purpose of the Study:
- To elucidate the role of PML Nuclear Bodies in cellular homeostasis.
- To explore the connection between stress responses and NB function.
- To investigate the potential of pharmacological manipulation of NBs for disease treatment.
Main Methods:
- The study focuses on the functional aspects of PML NBs and the PML protein.
- It examines the role of sumoylation within NBs under stress conditions.
- The research discusses the impact of external agents like interferons and oxidants on NB formation.
Main Results:
- NBs recruit diverse proteins and act as stress-regulated sumoylation factories.
- SUMO-initiated processes within NBs facilitate post-translational modifications and protein degradation.
- Stress enhances sumoylation activity, highlighting a central role for this process.
Conclusions:
- A working model for NB-regulated cellular activities can be developed based on stress-enhanced sumoylation.
- Pharmacological manipulation of NB formation shows promise for treating malignant, viral, and neurodegenerative diseases.
- Targeting NB sumoylation offers a potential therapeutic strategy for proteinopathies.
Keywords:
PMLRNF4SIMSUMOarsenicdegradationinterferonnuclear bodiesoxidative stresspost-translational modificationssenescenceMore Related Videos
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