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RATEX: A Scalable RNA-Based Platform for Logical and Multi-Layered Cellular Programming.

Hyunseop Goh1, Hansol Kang1, Chaeri Kim1

  • 1Department of Life Sciences, Pohang University of Science and Technology, Pohang, South Korea.

Angewandte Chemie (International Ed. in English)
|May 5, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a new RNA-based system called RATEX (Ribosome-Assisted Transcriptional EXpression controller) for building complex genetic circuits. This scalable platform enables precise control over gene expression and cellular functions using RNA regulators.

Keywords:
RNAcellular programminglogic gateribosome‐mediated transcription regulationsynthetic biology

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Area of Science:

  • Synthetic Biology
  • Molecular Engineering
  • Biotechnology

Background:

  • Scalable genetic circuits are crucial for advanced cellular functions.
  • Synthetic RNA regulators offer advantages like low metabolic load and design flexibility.
  • Current challenges include achieving wide dynamic ranges and multiplexed regulatory cascades in RNA circuits.

Purpose of the Study:

  • To introduce the RATEX (Ribosome-Assisted Transcriptional EXpression controller) platform for scalable RNA-programmed circuit design.
  • To integrate a translation-to-transcription converter with synthetic RNA regulators for enhanced control.
  • To address limitations in dynamic range and multiplexing for synthetic RNA circuits.

Main Methods:

  • Developed the RATEX platform by integrating a translation-to-transcription converter with synthetic RNA regulators.
  • Utilized a library of translation regulators for gene regulation up to 1,492-fold.
  • Leveraged natural ribosome-mediated sensing for environmental inputs like metabolites.
  • Demonstrated multi-input logic gates (up to 6-input OR, hybrid 3-input) for RNA, metabolite, and small-molecule inputs.
  • Implemented multiplexed signaling cascades for signal amplification and combinatorial control of RNA outputs.
  • Applied RNA- and metabolite-sensing AND gates to control cellular morphology and spatial organization.

Main Results:

  • The RATEX platform enables a compact and scalable RNA-programmed circuit architecture.
  • Achieved significant gene regulation (up to 1,492-fold) using repurposed translation regulators.
  • Successfully demonstrated multi-input logic processing with complex logic gates.
  • Showcased signal amplification and multiplexed control of RNA outputs.
  • Controlled cellular morphology and intracellular spatial organization using RATEX-based logic gates.

Conclusions:

  • The RATEX platform provides a scalable and modular architecture for designing synthetic RNA circuits.
  • Offers a broad design space for synthetic biology and biotechnology applications.
  • Enables sophisticated control over cellular functions through RNA-programmed gene expression.