DNA Framework-Based Programmable Atom-Like Nanoparticles for Non-Coding RNA Recognition and Differentiation of Cancer...

Area of Science:

• Biotechnology and Nanotechnology
• Molecular Biology and Genetics
• Cancer Research and Precision Medicine

Background:

• Non-coding RNAs (ncRNAs) are crucial biomarkers for cell differentiation and classification, forming the basis of precision medicine.
• Current challenges include simultaneous analysis of multiple ncRNAs and integrating biomarker data for accurate cell typing.
• Existing methods often lack the sensitivity and multiplexing capability required for comprehensive intra-cellular analysis.

Purpose of the Study:

• To design and develop DNA framework-based programmable atom-like nanoparticles (PANs) for molecular classification.
• To enable intra-cellular imaging and simultaneous analysis of multiple ncRNAs associated with cell differentiation.
• To establish a universal strategy for classifying cancer cells during malignant transformation and tumor progression.

Main Methods:

• Designed DNA framework-based programmable atom-like nanoparticles (PANs) as molecular classifiers.
• Utilized catalytic hairpin assembly for signal amplification, enhancing detection sensitivity.
• Measured in situ ncRNA levels via fluorescent signal changes from PAN reporter interactions with ncRNAs.

Main Results:

• Achieved a four-orders-of-magnitude reduction in detection limits compared to non-amplified methods.
• Demonstrated the capacity to measure multiple ncRNAs simultaneously in living human gastric cancer cells.
• Successfully assessed the degree of cell differentiation using the PANs-based molecular classifier.

Conclusions:

• The PANs-based molecular classifier provides high-fidelity conversion of ncRNA expression levels into measurable binding events.
• This approach offers a sensitive and multiplexed method for analyzing ncRNAs within living cells.
• The developed strategy serves as a universal platform for cancer cell classification, aiding in understanding tumor progression.