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RNA-Based Communication in Heterogeneous Populations of Cell Mimics.

François-Xavier Lehr^1,2,3, Imre Banlaki^1,2,3, Eric Bumüller^1,2

¹Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany.

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|January 16, 2026

Summary

Synthetic RNA regulators enable communication between engineered cell mimics. This study demonstrates their use in distributed logic circuits, paving the way for programmable signaling in synthetic cell communities.

Keywords:

RNA regulators cell-free transcription and translation communication logic gate synthetic cells

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Published on: October 25, 2018

Area of Science:

Synthetic biology
Biochemistry
Chemical engineering

Background:

RNA regulators offer a flexible platform for constructing synthetic biological circuits.
Communication between synthetic cells is crucial for developing complex cellular systems.
Small regulatory RNAs present an opportunity for programmable signaling.

Purpose of the Study:

To investigate the potential of small synthetic RNA regulators as signaling molecules for communication between synthetic cells.
To engineer cell mimics capable of producing, emitting, and receiving RNA regulators.
To compare distributed logic computation using RNA regulators with traditional cell-free expression systems.

Main Methods:

Engineering porous polymer cell mimics to produce and receive synthetic RNA regulators.
Implementing an AND gate circuit using two types of small regulatory RNAs.
Distributing sender and receiver cell mimics in various densities and spatial arrangements.
Analyzing spatiotemporal gradients of RNA signals and reporter gene expression.

Main Results:

Demonstrated successful production, emission, and reception of synthetic RNA regulators between cell mimics.
Identified specific configurations of sender and receiver cells that enhance signal activation.
Revealed spatiotemporal gradients in RNA signaling influenced by cell density and arrangement.
Showcased the feasibility of distributed logic computation using RNA-based communication.

Conclusions:

Small regulatory RNAs expand the engineering toolbox for synthetic cell communication.
Programmable RNA signaling molecules can be utilized for intercellular communication.
The rapid turnover of RNA is suitable for establishing dynamic signaling gradients in synthetic cell communities.