Nuclemeter: a reaction-diffusion based method for quantifying nucleic acids undergoing enzymatic amplification.

Area of Science:

• Biotechnology
• Molecular Diagnostics
• Medical Technology

Background:

• Nucleic acid amplification and quantification are vital for medical and biotech applications.
• Accurate pathogen quantification, such as HIV viral load, is crucial for patient monitoring and treatment efficacy.
• Current methods often rely on expensive, non-portable real-time PCR machines, limiting their use in resource-limited settings.

Purpose of the Study:

• To develop a simple, low-cost, instrument-free method for end-point quantification of nucleic acids.
• To enable on-site and point-of-care nucleic acid quantification.
• To provide an alternative to conventional, high-cost diagnostic instrumentation.

Main Methods:

• A reaction-diffusion based approach for enzymatic nucleic acid amplification.
• Inference of target molecule number from the position of the reaction-diffusion front.
• Validation using HIV viral load monitoring.

Main Results:

• The method provides end-point quantification of target nucleic acids.
• Performance in HIV viral load monitoring was comparable to conventional benchtop methods.
• The technique is suitable for point-of-care applications.

Conclusions:

• The proposed reaction-diffusion method offers a simple, low-cost, and instrument-free solution for nucleic acid quantification.
• It is adaptable for multiplexing and high-throughput processing.
• This technology has significant potential for point-of-care diagnostics, especially in low-resource settings.