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Programming Affinity for Precise Tumor Recognition with Allosteric Nanosensing-Circles.

Lili Ai1, Qianqian Zuo1, Youshan Li1

  • 1Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, People's Republic of China.

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Summary

Researchers developed tunable DNA nanosensing-circles (NSCs) that precisely target tumors by sensing the tumor microenvironment (TME). These advanced probes overcome "on-target, off-tumor" challenges for improved tumor imaging and therapy.

Keywords:
DNA nanostructureallosteric regulationaptamerprecise tumor recognitiontumor microenvironment

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Area of Science:

  • Biomedical Engineering
  • Molecular Biology
  • Nanotechnology

Background:

  • Current smart probes for tumor recognition face challenges with "on-target, off-tumor" detection.
  • Precise tumor imaging and therapy require probes with enhanced specificity.

Purpose of the Study:

  • To fabricate and characterize allosterically tunable DNA nanosensing-circles (NSCs).
  • To program NSCs for recognition of tumor microenvironment (TME) hallmarks.
  • To evaluate the efficacy of NSCs in achieving precise tumor recognition and imaging.

Main Methods:

  • Fabrication of DNA nanosensing-circles (NSCs) with allosteric tunability.
  • Programming NSC recognition affinity based on TME hallmarks (small molecules, acidity, oncoproteins).
  • In vitro analysis of NSC allosteric regulation and in vivo imaging studies.

Main Results:

  • NSCs demonstrated recognition ability through allosteric regulation upon sensing TME hallmarks.
  • In vitro studies confirmed the programmed recognition capabilities of NSCs.
  • In vivo imaging revealed that NSCs enable precise tumor visualization.

Conclusions:

  • Allosterically tunable NSCs offer a novel approach to overcome "on-target, off-tumor" limitations.
  • NSCs show significant promise as tools for precise tumor imaging.
  • The developed NSCs hold potential for future applications in targeted cancer therapy.