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Engineering dynamic cell cycle control with synthetic small molecule-responsive RNA devices.

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Scientists engineered RNA devices to control the mammalian cell cycle. This synthetic biology tool allows reversible cell cycle arrest, advancing research in cancer and cellular reprogramming.

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Area of Science:

  • Synthetic Biology
  • Molecular Biology
  • Cell Biology

Background:

  • The cell cycle is crucial in human health, development, and diseases like cancer.
  • Controlling the mammalian cell cycle offers potential for improved cellular reprogramming, cancer research, gene therapy, and protein production.

Purpose of the Study:

  • To engineer novel RNA-based control devices for specific and reversible regulation of the mammalian cell cycle.
  • To develop tools for precise control over gene expression in living cells using exogenous inputs.

Main Methods:

  • Identification of key regulatory nodes to arrest U2-OS cells in G0/1 or G2/M phases.
  • Optimization of identified regulators and integration under a ribozyme switch for inducible control.
  • Characterization of the reliability and reproducibility of the developed cell cycle controllers.

Main Results:

  • Engineered specific and modular RNA devices for controlling gene expression in response to external signals.
  • Achieved inducible and reversible arrest of up to 80% of cells in a chosen cell cycle phase (G0/1 or G2/M).
  • Demonstrated reproducible function of the G0/1 cell cycle control device over several weeks and multiple experiments.

Conclusions:

  • This study presents the first use of synthetic RNA devices for mammalian cell cycle control.
  • The developed RNA platform offers a versatile class of synthetic biology tools for dynamic, modular, and multi-output control of mammalian cells.