alexa Label-free detection of DNA mutations by SPR: application to the early detection of inherited breast cancer.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): Carrascosa LG, Calle A, Lechuga LM

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Abstract A screening analysis of DNA hybridization and the presence of DNA mutations using an surface plasmon resonance (SPR) biosensor is shown. The influence of lateral and vertical spacers, as well as several hybridization conditions, was studied to optimize the differentiation between fully complementary and mismatched DNA strands. Our results demonstrated that SPR biosensors were able to detect mismatch sequences related to inherited breast cancer, with high specificity and sensitivity. Using PCR synthetic sequences as targets, mutant sequences were clearly discriminated from fully complementary ones, and detection limits below 50 nM were achieved. This article was published in Anal Bioanal Chem and referenced in Journal of Cytology & Histology

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