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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
p53: a new player in reproduction.
Wenwei Hu1, Zhaohui Feng, Gurinder S Atwal
1Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, New Brunswick, New Jersey, USA.
Cell Cycle (Georgetown, Tex.)
|April 17, 2008
Summary
The p53 protein, known for tumor suppression, also regulates maternal reproduction. Studies show p53 influences embryo implantation by controlling LIF levels, impacting pregnancy success in mice and potentially humans.
Area of Science:
- Molecular Biology
- Reproductive Biology
- Evolutionary Biology
Background:
- The tumor suppressor p53 protein's functions under normal conditions are largely unknown.
- Evolutionary selection of p53 and Mdm2 gene alleles suggests uncharacterized roles.
- p53's involvement in reproduction is a newly explored area.
Purpose of the Study:
- To investigate the non-tumorigenic functions of the p53 protein.
- To explore the role of p53 in maternal reproductive success.
- To identify novel p53 target genes involved in reproduction.
Main Methods:
- Studied p53 deficient (p53(-/-)) female mice.
- Analyzed the transcriptional regulation of leukemia inhibitory factor (LIF) by p53.
- Administered LIF to pregnant p53(-/-) mice to assess rescue effects.
Main Results:
- p53 deficiency in mice leads to reduced pregnancy rates and litter sizes due to impaired embryo implantation.
- p53 regulates uterine LIF levels, which are crucial for blastocyst implantation.
- LIF administration restored reproductive capacity in p53(-/-) mice.
- A link between p53 codon 72 polymorphism and recurrent implantation failure in women was reported.
Conclusions:
- The p53 protein plays a critical role in regulating maternal reproduction and embryo implantation.
- This reproductive function of p53 may explain the evolutionary selection of p53 and Mdm2 gene alleles.
- The findings suggest antagonistic pleiotropy as a potential mechanism for p53's evolutionary significance.
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