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Related Experiment Video

Updated: May 8, 2026

Purification of Ubiquitinated p53 Proteins from Mammalian Cells

Purification of Ubiquitinated p53 Proteins from Mammalian Cells

Published on: March 21, 2022

Poly (C)-binding protein 1 regulates p63 expression through mRNA stability.

Seong-Jun Cho¹, Yong-Sam Jung, Xinbin Chen

¹Comparative Oncology Laboratory, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America.

|August 14, 2013

Summary

This summary is machine-generated.

Poly (C)-binding protein 1 (PCBP1) regulates p63 expression by controlling the stability of p63 mRNA. This finding is crucial for understanding p63

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Area of Science:

Molecular Biology
Gene Regulation
Cancer Research

Background:

p63, a key transcription factor in epithelial development and tumor suppression, is regulated by various mechanisms.
While post-translational modifications are primary regulators, transcriptional and posttranscriptional controls are also vital for p63 expression.

Purpose of the Study:

To investigate the role of poly (C)-binding protein 1 (PCBP1) in regulating p63 expression.
To elucidate the mechanism by which PCBP1 affects p63 levels.

Main Methods:

Investigated the effect of PCBP1 knockdown on p63 transcript and protein levels.
Analyzed the interaction between PCBP1 and the 3' untranslated region (3'UTR) of p63 mRNA.
Identified a CU-rich element (CUE) in the p63 3'UTR responsible for PCBP1 binding.

Main Results:

Knockdown of PCBP1 led to decreased p63 transcript and protein levels.
PCBP1 was found to bind to the p63 3'UTR, enhancing mRNA stability.
A specific CU-rich element (CUE) within the p63 3'UTR mediates PCBP1 binding and regulation.

Conclusions:

PCBP1 is a critical regulator of p63 expression.
PCBP1 enhances p63 expression by stabilizing its mRNA through direct binding to the 3'UTR.
This mechanism highlights a novel posttranscriptional regulatory pathway for p63.