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Published on: May 18, 2017
Tissue-specific expression of p73 C-terminal isoforms in mice
Francesca Grespi1, Ivano Amelio, Paola Tucci
1Medical Research Council, Toxicology Unit, Leicester University, Leicester, UK.
Cell Cycle (Georgetown, Tex.)
|November 20, 2012
Summary
The p73 protein has multiple forms (isoforms) that play different roles in cell regulation. This study maps the expression of these p73 isoforms in mice, revealing how they change with development and DNA damage.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- p73 is a transcription factor in the p53 family, crucial for cellular processes.
- Two N-terminal variants (TAp73 and ΔNp73) and multiple C-terminal isoforms exist.
- Differential roles of TAp73 (tumor suppression) and ΔNp73 (anti-apoptosis) are known.
Purpose of the Study:
- To investigate the expression patterns of murine p73 C-terminal isoforms.
- To characterize the spatio-temporal expression profile of p73 isoforms in mice.
- To examine p73 isoform expression changes in response to DNA damage.
Main Methods:
- Reverse Transcription Polymerase Chain Reaction (RT-PCR) was used to detect p73 isoform mRNAs.
- In vivo expression was analyzed across different mouse organs and developmental stages.
- Ex vivo and in vivo experiments assessed expression following DNA damage induction.
Main Results:
- All human-described p73 C-terminal isoforms were detected in mouse tissues.
- Distinct spatio-temporal expression profiles for p73 isoforms were identified.
- Significant changes in p73 isoform expression were observed under DNA-damaging conditions.
Conclusions:
- This study provides the first comprehensive analysis of mouse p73 C-terminal isoform expression.
- Novel insights into the dynamic regulation of p73 isoforms during development and in response to cellular stress were gained.
- Understanding these expression switches is vital for deciphering p73's role in tumorigenesis and DNA repair.
