Enzyme-Initiated Assembly of an Extracellular-Like Two-Dimensional Nanonetwork as a Method to Detect Procancerous...

Area of Science:

• Biochemistry
• Molecular Biology
• Biomedical Engineering

Background:

• Extracellular matrix (ECM) enzymes, including lysyl oxidase (LOX), play a critical role in cancer progression by altering ECM structure and integrity.
• Monitoring ECM enzyme activity spatiotemporally is crucial for understanding their pro-cancerous effects.
• Conventional detection methods like antibodies and aptamers have limitations in fully capturing ECM enzyme dynamics.

Purpose of the Study:

• To develop a novel molecular probe for real-time monitoring of ECM enzyme activity.
• To create a biosensing system that mimics ECM cross-linking processes.
• To enable simultaneous, multi-modal signal readout for a comprehensive analysis of ECM enzyme function.

Main Methods:

• Development of a molecular probe that interacts with ECM enzymes by sequestering metal ion cofactors.
• Utilizing the probe's modulated catalytic ability to induce self-propagated cross-linking, forming a network biomimetic of the ECM.
• Simultaneous recording of three distinct signal readouts on the sensing surface.

Main Results:

• The biosensing process biomimics in vivo ECM cross-linking.
• The developed probe effectively modulates ECM enzyme activity.
• Three distinct signal readouts provide a comprehensive picture of ECM enzyme activity, surpassing traditional methods.
• A correlation was observed between the detected signal and the progression of colorectal cancer.

Conclusions:

• The novel molecular probe and biosensing platform offer a powerful tool for evaluating ECM enzyme activity.
• This approach provides a more holistic understanding of ECM dynamics in cancer.
• The method shows potential for assessing ECM-related tumor invasiveness in future clinical applications.