2023
Digital assay for rapid electronic quantification of clinical pathogens using DNA nanoballs
Tayyab M, Barrett D, van Riel G, Liu S, Reinius B, Scharfe C, Griffin P, Steinmetz L, Javanmard M, Pelechano V. Digital assay for rapid electronic quantification of clinical pathogens using DNA nanoballs. Science Advances 2023, 9: eadi4997. PMID: 37672583, PMCID: PMC10482329, DOI: 10.1126/sciadv.adi4997.Peer-Reviewed Original ResearchConceptsMicrofluidic impedance cytometerDNA nanoballsLabel-free assayColorimetric readoutImpedance cytometerDigital assaysLoop-mediated isothermal amplificationCapillary-driven flowNanoballsDNA detectionStandalone deviceDNA/RNAIsothermal amplificationCompact systemNucleic acidsClinical pathogensPathogen identificationAccurate detectionRapid testReadoutDetectionNovel methodImpedance
2021
Multi-frequency impedance sensing for detection and sizing of DNA fragments
Sui J, Gandotra N, Xie P, Lin Z, Scharfe C, Javanmard M. Multi-frequency impedance sensing for detection and sizing of DNA fragments. Scientific Reports 2021, 11: 6490. PMID: 33753781, PMCID: PMC7985362, DOI: 10.1038/s41598-021-85755-9.Peer-Reviewed Original ResearchConceptsTarget molecule bindsComplex biological samplesElectronic biosensorsNon-target materialsProbe selectivityAnalytical performanceMolecules bindBiological samplesReaction productsDifferent lengthsDNA moleculesDNA detectionMicrofluidic chipNonspecific bindingFmolElectronic signalsParamagnetic beadsImpedance sensorBeadsBiosensorDNA concentrationDNA fragmentsSelectivityProbePolymerase chain reaction products