Related Experiment Video
Updated: Aug 19, 2025
Surface-enhanced Resonance Raman Scattering Nanoprobe Ratiometry for Detecting Microscopic Ovarian Cancer via Folate Receptor Targeting
Published on: March 25, 2019
A pH-Responsive Covalent Nanoscale Device Enhancing Temporal and Force Stability for Specific Tumor Imaging
Jing Zhang1, Dan Wang1, Hong Chen1
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, Hunan410082, China.
Researchers developed a pH-driven nanoscale device for precise cancer diagnosis. This innovation enhances tumor recognition by avoiding off-target binding, improving sensitivity for potential clinical use.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Oncology
Background:
- DNA probe-mediated precision medicine shows promise for cancer diagnosis and treatment.
- Existing nanoscale devices lack the specificity and sensitivity for widespread clinical application.
Purpose of the Study:
- To develop a simple, highly specific, and sensitive nanoscale device for cancer detection.
- To address the limitations of current nanodevices in clinical settings.
Main Methods:
- Engineered a pH-driven covalent nanoscale device with switchable structure.
- Integrated proximity-driven covalent cross-linking for enhanced binding.
- Utilized the acidic tumor microenvironment to trigger a pH-driven recognition mechanism.
Main Results:
- The nanodevice demonstrated specific recognition of tumor cells by eliminating non-specific binding.
- The covalent binding strategy improved tumor recognition sensitivity by preventing target molecule shedding.
- The device effectively targets cancer cells in their acidic microenvironment.
Conclusions:
- The pH-driven covalent nanoscale device offers a novel approach for precise cancer diagnosis and treatment.
- This technology has the potential to overcome current limitations in nanomedicine for oncology.
- The nanodevice is envisioned for specific, long-term tumor imaging in the cancer microenvironment.
