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Related Experiment Video

Updated: Jul 10, 2026

Reliably Engineering and Controlling Stable Optogenetic Gene Circuits in Mammalian Cells

Reliably Engineering and Controlling Stable Optogenetic Gene Circuits in Mammalian Cells

Published on: July 6, 2021

Constructing an NF-κB Oscillator for Dual-Input Control in Yeast.

Yuanxu Jiang^1,2, Yingying Fan¹, Zhibo Zhang²

¹Center for Cell and Gene Circuit Design, State Key Laboratory of Quantitative Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.

Methods in Molecular Biology (Clifton, N.J.)

|July 8, 2026

Summary

Researchers developed a synthetic biological circuit in yeast that oscillates in response to two different environmental signals: alpha-factor and ethanol. This dual-input system allows for more complex studies of biological oscillators and environmental interactions.

Keywords:

Coupled oscillator Entrainment Microfluidics Molecular cloning Synthetic oscillation Time-lapse microscopy Yeast transformation

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Area of Science:

Synthetic biology
Systems biology
Biochemistry

Background:

Biological oscillators regulate cellular behaviors through interactions with environmental signals.
Current synthetic oscillators typically respond to a single input, limiting research into responses to multiple cues.

Purpose of the Study:

To engineer a synthetic oscillatory circuit responsive to dual environmental inputs.
To enable the study of biological oscillator interactions with multiple periodic signals.

Main Methods:

Construction of a synthetic oscillatory circuit based on the mammalian NF-κB negative feedback loop.
Utilized budding yeast as the host organism.
Demonstrated operation with dual periodic inputs: alpha-factor and ethanol.

Main Results:

The synthetic circuit produces sustained and tunable oscillations.
The circuit successfully responds to both alpha-factor and ethanol inputs simultaneously.
The system allows for controlled oscillation initiation and modulation by multiple cues.

Conclusions:

A novel synthetic oscillatory circuit responding to dual inputs (alpha-factor and ethanol) has been successfully constructed and demonstrated in budding yeast.
This dual-input system enhances the study of biological oscillators' responses to complex environmental stimuli.
The developed protocol provides a platform for investigating intricate cellular regulation by multiple periodic signals.