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Updated: Nov 30, 2025

Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Molecular Mechanisms and Function of the p53 Protein Family Member - p73
1Department of Experimental Medicine, TOR, University of Rome Tor Vergata, Rome, 00133, Italy. melino@uniroma2.it.
Abstract:
Over 20 years after identification of p53 and its crucial function in cancer progression, two members of the same protein family were identified, namely p63 and p73. Since then, a body of information has been accumulated on each of these genes and their interrelations. Biological role of p73 has been elucidated thanks to four distinct knockout mice models: (i) with deletion of the entire TP73 gene, (ii) with deletion of exons encoding the full length TAp73 isoforms, (iii) with deletions of exons encoding the shorter DNp73 isoform, and (iv) with deletion of exons encoding C-terminal of the alpha isoform. This work, as well as expression studies in cancer and overwhelming body of molecular studies, allowed establishing major role of TP73 both in cancer and in neuro-development, as well as ciliogenesis, and metabolism. Here, we recapitulate the major milestones of this endeavor.
Insights
The p73 protein family, identified after p53, plays a key role in cancer and neuro-development. Studies using knockout mice models have elucidated p73
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- p53's critical role in cancer was established over 20 years ago.
- p63 and p73, members of the same protein family, were identified subsequently.
- Significant research has accumulated on p63 and p73, including their interrelations.
Purpose of the Study:
- To recapitulate the major milestones in understanding the biological role of p73.
- To highlight the significance of TP73 in various biological processes.
Main Methods:
- Utilizing four distinct p73 knockout mouse models with specific gene deletions.
- Conducting expression studies in cancer.
- Compiling a body of molecular studies.
Main Results:
- Elucidation of the biological role of p73 through knockout mouse models.
- Establishment of TP73's major role in cancer.
- Identification of TP73's involvement in neuro-development, ciliogenesis, and metabolism.
Conclusions:
- TP73 is a crucial gene with significant implications in cancer and neuro-development.
- The study provides a comprehensive overview of TP73 research milestones.
- Further understanding of p73's functions is essential.
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