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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
How important are post-translational modifications in p53 for selectivity in target-gene transcription and tumour
A Olsson1, C Manzl, A Strasser
1Division of Developmental Immunology, Biocenter, Innsbruck Medical University, Innsbruck, Austria.
Abstract:
A number of elegant studies exploring the consequences of expression of various mutant forms of p53 in mice have been published over the last years. The results and conclusions drawn from these studies often contradict results previously obtained in biochemical assays and cell biology studies, questioning their relevance for p53 function in vivo. Owing to the multitude of post-translational modifications imposed on p53, however, the in vivo validation of their relevance for proper protein function and tumour suppression is constantly lagging behind new biochemical discoveries. Nevertheless, mouse genetics presents again its enormous power. Despite being relatively slow and tedious, it has become indispensable for researchers to sort out the wheat from the chaff in an endless sea of publications on p53.
Insights
Mouse genetic studies are crucial for validating the in vivo relevance of mutant p53 functions and tumor suppression, despite conflicting prior research.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Numerous studies have investigated mutant p53 forms in mice.
- In vivo findings often contradict previous biochemical and cell biology results.
- Post-translational modifications of p53 complicate in vivo validation.
Purpose of the Study:
- To evaluate the significance of mutant p53 expression in vivo.
- To reconcile discrepancies between in vitro and in vivo p53 research.
- To highlight the indispensable role of mouse genetics in p53 research.
Main Methods:
- Expression of various mutant p53 forms in mice.
- Comparison of mouse genetic data with biochemical assays.
- Analysis of p53 post-translational modifications in vivo.
Main Results:
- Mouse genetic studies provide essential validation for p53 research.
- Discrepancies between in vitro and in vivo findings are highlighted.
- Mouse models are vital for understanding p53's role in tumor suppression.
Conclusions:
- Mouse genetics is indispensable for clarifying p53's in vivo function.
- Despite challenges, mouse models are key to advancing p53 research.
- Validating p53's role in tumor suppression requires in vivo evidence.
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