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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
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Tau affects P53 function and cell fate during the DNA damage response
Martina Sola1,2, Claudia Magrin1,2, Giona Pedrioli1,3
1Neurodegeneration Research Group, Laboratory for Biomedical Neurosciences, Ente Cantonale Ospedaliero, Torricella-Taverne, Switzerland.
Communications Biology
|May 20, 2020
Summary
Tau protein depletion impairs DNA damage response, affecting P53 stability and leading to increased cell senescence. This suggests Tau
Area of Science:
- Molecular Biology
- Neuroscience
- Genetics
Background:
- Cells possess a DNA damage response system regulated by P53.
- Accumulated DNA damage and aberrant cell fate are implicated in aging-associated disorders like cancer and neurodegeneration.
- Tauopathies are neurodegenerative diseases characterized by Tau protein aggregation.
Purpose of the Study:
- To investigate the role of Tau in the cellular response to DNA damage.
- To examine the impact of Tau depletion on P53 regulation and cell fate.
- To explore the potential link between Tau, P53, and neurodegeneration.
Main Methods:
- Studied the response to acute DNA damage in neuroblastoma cells with depleted Tau (loss-of-function model).
- Assessed P53 stability and activity.
- Analyzed P53 modification and its interaction with MDM2.
Main Results:
- Tau depletion resulted in altered P53 stability and activity.
- Reduced cell death and increased cell senescence were observed in Tau-depleted cells.
- Tau's function involves regulating P53 modification and MDM2 activity.
Conclusions:
- Tau plays a critical role in maintaining P53 integrity and function during DNA damage response.
- Loss of Tau function leads to impaired DNA damage response, promoting cell senescence.
- These findings offer new insights into the pathomechanisms of neurodegeneration and potential therapeutic strategies.
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