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Related Experiment Video

Updated: May 9, 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

TXNIP interacts with hEcd to increase p53 stability and activity.

Hyun-Woo Suh¹, Sohyun Yun, Haeyoung Song

¹Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 305-806, Republic of Korea.

Biochemical and Biophysical Research Communications

|July 25, 2013

Summary

Thioredoxin interacting protein (TXNIP) interacts with human ecdysoneless (hEcd) to stabilize p53 protein levels. This interaction enhances p53 activity, promoting cell death in response to stress stimuli.

Keywords:

Cell death Mdm2 TRX TXNIP hEcd human ecdysoneless murine double minute-2 p53 thioredoxin thioredoxin interacting protein

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Last Updated: May 9, 2026

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

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Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence

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Published on: December 30, 2025

Area of Science:

Molecular Biology
Cell Biology
Cancer Research

Background:

The p53 protein is a critical tumor suppressor involved in cell cycle arrest and apoptosis.
Human ecdysoneless (hEcd) is known to stabilize p53 and enhance its transcriptional activity.

Purpose of the Study:

To investigate the role of thioredoxin interacting protein (TXNIP) in the hEcd-p53 regulatory pathway.
To elucidate the mechanism by which TXNIP influences p53 stability and activity.

Main Methods:

Co-immunoprecipitation assays to confirm protein interactions.
Western blotting to assess p53 ubiquitination and protein levels.
Cell viability assays (e.g., using actinomycin D) to evaluate the functional impact of TXNIP and hEcd.

Main Results:

TXNIP was found to interact with hEcd.
TXNIP inhibits MDM2-mediated p53 ubiquitination, thereby stabilizing p53.
Overexpression of TXNIP and hEcd increased cell death, while their knockdown reduced it, particularly in MCF-7 cells.

Conclusions:

TXNIP acts as a novel regulator within the hEcd-MDM2-p53 regulatory loop.
The TXNIP-hEcd interaction contributes to p53 stabilization and enhanced tumor suppressor activity.
This pathway represents a potential therapeutic target for cancer treatment.