Key research themes
1. How do isothermal nucleic acid amplification methods improve DNA amplification specificity and portability compared to PCR?
This research area focuses on the development and optimization of isothermal amplification techniques, such as loop-mediated isothermal amplification (LAMP), recombinase polymerase amplification (RPA), strand displacement amplification (SDA), helicase-dependent amplification (HDA), and multiple displacement amplification (MDA). These methods aim to overcome the limitations of PCR—including the need for thermal cycling and complex instruments—thus enabling rapid, specific, and highly sensitive nucleic acid amplification in resource-limited or point-of-care settings.
2. What strategies enhance the specificity and viability assessment in DNA amplification based microbial detection?
This theme addresses methods to improve the accuracy of nucleic acid amplification-based detection by differentiating viable organisms from non-viable ones and increasing assay selectivity. Approaches include the use of viability dyes (EMA/PMA) coupled with amplification, sequence-specific probe-based detection, and enzyme-assisted or polymer-based signal amplification to reduce background from non-specific amplification or dead cell DNA contamination, which is critical in clinical, environmental, and food safety applications.
3. What novel signal amplification and detection methods enhance sensitivity and simplicity in nucleic acid diagnostics beyond traditional amplification?
This theme covers innovative strategies that improve nucleic acid detection sensitivity without necessarily relying on target amplification or thermal cycling, including polymer-based signal amplification, enzyme-labeling approaches, fluorescence resonance energy transfer (FRET)-based probes, DNA nanomachines, and visual signal generation via DNAzymes. Such approaches aim to reduce assay complexity, instrument dependency, and costs, facilitating rapid and point-of-care nucleic acid testing.