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Synthesizing artificial devices that redirect cellular information at will.

Yuchen Liu1, Jianfa Li1, Zhicong Chen1

  • 1Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China.

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Researchers developed novel RNA devices called signal-connectors to precisely link cellular signals. These tools enable control over gene translation, reprogramming cells and reversing cancer phenotypes by redirecting oncogenic signaling.

Keywords:
cancer biologycomputational biologygenetic switchhumansignaling networkssystems biology

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Area of Science:

  • Synthetic biology
  • Molecular and cellular biology
  • Biotechnology

Background:

  • Natural cellular signaling pathways are complex and difficult to manipulate precisely.
  • Rewiring these circuits offers potential for cell reprogramming and therapeutic interventions.
  • Current methods lack the ability to link cellular signals at will for targeted control.

Purpose of the Study:

  • To develop a novel platform for connecting cellular signals at the translational level.
  • To engineer RNA devices (signal-connectors) for precise control over gene expression in response to specific signals.
  • To demonstrate the application of these devices in constructing logic gates, feedback loops, and rewiring native/novel signaling pathways.

Main Methods:

  • Design and synthesis of RNA-based signal-connector devices.
  • Utilizing these devices to repress or enhance target gene translation.
  • Construction of gene networks incorporating logic gates and feedback loops.
  • Application in identifying and redirecting cancer cell states using integrated signaling inputs.

Main Results:

  • Successfully developed RNA signal-connectors that link one signal to another at the translational level.
  • Demonstrated the ability to repress or enhance target gene translation based on input signals.
  • Constructed various logic gates (e.g., AND gates) and feedback loops within gene networks.
  • Successfully rewired native signaling pathways and created novel ones.
  • Applied signal-connectors for cancer cell identification and phenotype reversal by modulating oncogenic signaling.

Conclusions:

  • Signal-connectors provide a versatile platform for programmable control of cellular information flow.
  • These RNA devices enable precise manipulation of gene expression and cellular functions.
  • The technology holds significant potential for synthetic biology applications, including cancer therapy by reversing malignant phenotypes.