Abstract
Circulating cell free mitochondrial DNA (ccf-mtDNA) has emerged as a potential marker for diagnosis and prognosis of different chronic and age associated non-communicable diseases. Therefore, owing to its biomarker potential, we herein assessed a novel nano-photonic dual hybrid assay system for rapid and specific detection of ccf-mtDNA. The assay comprised of two systems, i.e. a capture and screen facet containing aminopyrene tethered carbon quantum dots for effective screening of circulating cell free nucleic acids (ccf-NAs) and a quantum dot conjugated probe for precise detection of ccf-mtDNA in the screened ccf-NAs. Our observations suggested that the developed dual-assay system possesses high feasibility and selectivity in screening of ccf-NAs and estimation of ccfmtDNA in a given sample. It also offers high versatility of measurement in different analytical platforms, indicating the translational potential of the method for possible disease risk assessment in control and field settings.
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