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A generalizable approach for programming protease-responsive conformationally inhibited artificial transcriptional factors

Author

Listed:
  • Yinxia Liu

    (Hunan University)

  • Lingyun Zhao

    (Hunan University)

  • Jinshan Long

    (Hunan University)

  • Zhenye Huang

    (Hunan University)

  • Ying Long

    (Hunan University)

  • Jianjun He

    (Hunan University)

  • Jian-Hui Jiang

    (Hunan University)

Abstract

Synthetic genetic circuits that harness programmable protein modules and artificial transcription factors (ATF) to devise event-triggerable cascaded pathways represent an essential class of tools for studying cell biology. Fine-tuning the general structural functionality of ATFs is important for constructing orthogonal and composable transcriptional regulators. Here, we report the design of a protease-responsive conformationally inhibited system (PRCIS). By intramolecularly linking the free DNA-binding domains of ATF to confined dimerized regions, the transcriptional binding is conformationally inactivated. The function of DNA binding is reinstated upon proteolytic cleavage of linkages, activating the downstream gene expressions. The versatility of PRCIS design is demonstrated through its adaptability to various ATFs and proteases, showcasing high activation ratios and specificity. Furthermore, the development of PRCIS-based triple-orthogonal protease-responsive and dual-orthogonal chemical-inducible platforms and Boolean logic operations are elaborated in this paper, providing a generalizable design for synthetic biology.

Suggested Citation

  • Yinxia Liu & Lingyun Zhao & Jinshan Long & Zhenye Huang & Ying Long & Jianjun He & Jian-Hui Jiang, 2025. "A generalizable approach for programming protease-responsive conformationally inhibited artificial transcriptional factors," Nature Communications, Nature, vol. 16(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-59828-6
    DOI: 10.1038/s41467-025-59828-6
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