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Related Experiment Video

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Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

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Published on: May 27, 2016

G-quadruplexes in the BAP1 promoter positively regulate its expression.

Yingzhou Li¹, Xiao Zhang¹, Yang Gao²

¹College of Life Science, Northeast Forestry University, Harbin, China.

Experimental Cell Research

|May 23, 2018

Summary

The BAP1 gene

Keywords:

BAP1 DNA helicase G-quadruplex Gene expression

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Area of Science:

Oncology
Molecular Biology
Genetics

Background:

The BAP1 gene plays a crucial role in oncogenesis.
Mechanisms regulating BAP1 gene expression are largely unknown.

Purpose of the Study:

To investigate the regulatory mechanisms of BAP1 gene expression.
To explore the potential role of G-quadruplex (G4) structures in BAP1 regulation.

Main Methods:

Circular dichroism spectroscopy to detect G4 structures.
Native polyacrylamide gel electrophoresis to analyze G4 formation.
Reporter assays to assess promoter activity.
Site-directed mutagenesis to disrupt G4 motifs.

Main Results:

The BAP1 promoter contains multiple G-rich regions capable of forming G4 structures.
G4 structures were confirmed using circular dichroism and native PAGE.
Disruption of predicted G4 structures significantly reduced BAP1 promoter activity.
DNA helicases CHD2 and CHD7 decreased BAP1 promoter activity, suggesting G4 unwinding.

Conclusions:

G-quadruplex structures in the BAP1 promoter play a significant role in regulating its expression.
These findings reveal a novel regulatory mechanism for BAP1, a key oncogene.