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Microenvironment-confined kinetic elucidation and implementation of a DNA nano-phage with a shielded internal computing layer

Author

Listed:
  • Decui Tang

    (Hunan University)

  • Shuoyao He

    (Hunan University)

  • Yani Yang

    (Hunan University)

  • Yuqi Zeng

    (Hunan University)

  • Mengyi Xiong

    (Hunan University)

  • Ding Ding

    (Shanghai Jiao Tong University)

  • Weijun Wei

    (Shanghai Jiao Tong University)

  • Yifan Lyu

    (Hunan University
    Furong Laboratory)

  • Xiao-Bing Zhang

    (Hunan University)

  • Weihong Tan

    (Shanghai Jiao Tong University
    Chinese Academy of Sciences)

Abstract

Multiple receptor analysis-based DNA molecular computation has been developed to mitigate the off-target effect caused by nonspecific expression of cell membrane receptors. However, it is quite difficult to involve nanobodies into molecular computation with programmed recognition order because of the “always-on” response mode and the inconvenient molecular programming. Here we propose a spatial segregation-based molecular computing strategy with a shielded internal computing layer termed DNA nano-phage (DNP) to program nanobody into DNA molecular computation and build a series of kinetic models to elucidate the mechanism of microenvironment-confinement. We explain the contradiction between fast molecular diffusion and effective DNA computation using a “diffusion trap” theory and comprehensively overcome the kinetic bottleneck of DNP by determining the rate-limiting step. We predict and verify that identifying trace amount of target cells in complex cell mixtures is an intrinsic merit of microenvironment-confined DNA computation. Finally, we show that DNP can efficiently work in complex human blood samples by shielding the interference of erythrocytes and enhance phagocytosis of macrophages toward target cells by blocking CD47-SIRPα pathway.

Suggested Citation

  • Decui Tang & Shuoyao He & Yani Yang & Yuqi Zeng & Mengyi Xiong & Ding Ding & Weijun Wei & Yifan Lyu & Xiao-Bing Zhang & Weihong Tan, 2025. "Microenvironment-confined kinetic elucidation and implementation of a DNA nano-phage with a shielded internal computing layer," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56219-9
    DOI: 10.1038/s41467-025-56219-9
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    References listed on IDEAS

    as
    1. Xiaoyi Fu & Guoliang Ke & Fangqi Peng & Xue Hu & Jiaqi Li & Yuyan Shi & Gezhi Kong & Xiao-Bing Zhang & Weihong Tan, 2020. "Size-selective molecular recognition based on a confined DNA molecular sieve using cavity-tunable framework nucleic acids," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    2. Steven M. Banik & Kayvon Pedram & Simon Wisnovsky & Green Ahn & Nicholas M. Riley & Carolyn R. Bertozzi, 2020. "Lysosome-targeting chimaeras for degradation of extracellular proteins," Nature, Nature, vol. 584(7820), pages 291-297, August.
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