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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...

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Related Experiment Video

Updated: Apr 5, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

How Does p73 Cause Neuronal Defects?

Maria Victoria Niklison-Chirou^1,2, Richard Killick³, Richard A Knight¹

¹Toxicology Unit, Medical Research Council, Leicester, LE1 9HN, UK.

Molecular Neurobiology

|August 13, 2015

Summary

This summary is machine-generated.

The p73 protein is crucial for central nervous system development and neuronal differentiation. It regulates key genes and microRNAs, impacting neural stem cells and mature neurons, though its role in brain disorders requires more study.

Keywords:

GLS2 Neurodegeneration Neuronal differentiation miR-34 p73, p75NTR

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Area of Science:

Neuroscience
Molecular Biology
Genetics

Background:

The p53-family member, p73, is vital for central nervous system (CNS) development, senescence, and tumor suppression.
p73's function in neuronal differentiation is intricate, involving multiple downstream signaling pathways.

Purpose of the Study:

To elucidate the multifaceted role of TAp73 in neural biology, focusing on its regulation of neural stem/progenitor cells and postmitotic neurons.
To investigate the involvement of TAp73 in adult brain physiology, including microRNA regulation.

Main Methods:

Analysis of TAp73's regulatory effects on genes such as SOX-2, Hey-2, TRIM32, Notch, p75NTR, and GLS2.
Investigation of TAp73's role in microRNA regulation, specifically miR-34a.

Main Results:

TAp73 directly or indirectly regulates genes essential for neural stem/progenitor cell self-renewal and differentiation.
TAp73 influences the differentiation and function of postmitotic neurons through modulation of p75NTR and GLS2.
TAp73 regulates miR-34a, highlighting the role of microRNAs in p73's function in the adult brain.

Conclusions:

TAp73 is a key regulator in neural development and function, impacting both stem cells and differentiated neurons.
The complex role of p73 in brain disorders warrants further investigation due to existing contradictory findings.