期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 393, 期 4, 页码 1173-1182出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-008-2555-1
关键词
SPR biosensor; DNA hybridization; DNA mutation; BRCA-1; Breast cancer
资金
- Fundacion M. Botin
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.
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