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Updated: Mar 8, 2026

A Multiplexed Luciferase-based Screening Platform for Interrogating Cancer-associated Signal Transduction in Cultured Cells

A Multiplexed Luciferase-based Screening Platform for Interrogating Cancer-associated Signal Transduction in Cultured Cells

Published on: July 3, 2013

Split luciferase-based biosensors for characterizing EED binders.

Ling Li¹, Lijian Feng¹, Minlong Shi¹

¹China Novartis Institutes for Biomedical Research, 4218 Jinke Road, Shanghai 201203, China.

Analytical Biochemistry

|January 24, 2017

Summary

This summary is machine-generated.

Researchers developed a novel EED biosensor using split luciferase to detect PRC2 inhibitors. This sensitive assay offers advantages over traditional methods for drug discovery and understanding inhibitor mechanisms.

Keywords:

Biosensor EED EED[G255D]H3K27me3-pocket PRC2 Split luciferase

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Bio-layer Interferometry for Measuring Kinetics of Protein-protein Interactions and Allosteric Ligand Effects

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Published on: February 18, 2014

Area of Science:

Biochemistry
Molecular Biology
Epigenetics

Background:

The embryonic ectoderm development (EED) subunit is crucial for Polycomb repressive complex 2 (PRC2) activity.
PRC2 regulates gene expression through histone methylation, particularly H3K27me3.
Targeting PRC2 is a strategy for developing cancer therapies.

Purpose of the Study:

To identify and characterize a new class of allosteric PRC2 inhibitors targeting the EED subunit.
To develop and validate a genetically encoded EED biosensor for detecting these inhibitors.
To elucidate the mechanism of action for these novel PRC2 inhibitors.

Main Methods:

Development of a split firefly luciferase-based EED biosensor utilizing the EED[G255D] mutant.
Application of the biosensor in transfected cells and in vitro biochemical assays.
Characterization using biophysical techniques like Differential Scanning Fluorimetry (DSF) and Isothermal Titration Calorimetry (ITC), alongside structural analysis.

Main Results:

The EED biosensor successfully detected compound binding in both cellular and in vitro settings.
The in vitro biosensor demonstrated higher sensitivity compared to label-free biophysical assays.
Analysis suggests inhibitors increase luciferase activity by reducing non-productive intramolecular interactions within the EED biosensor.

Conclusions:

A novel, sensitive EED biosensor has been developed for identifying PRC2 inhibitors.
The biosensor offers advantages in speed and sensitivity over existing assays.
Understanding the mechanism of inhibitor action can expand the utility of split luciferase biosensors in drug discovery.