What question did this study set out to answer?

Develop a rapid, homogeneous in-solution chemiluminescent hybridization assay capable of detecting all 12 possible single-base mismatches in DNA and RNA targets.

December 1, 1996Nucleic Acids ResearchOpen Access

Detection of All Single-Base Mismatches in Solution by Chemiluminescence

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Authors

NNNorman C. NelsonRobert H. Lurie Comprehensive Cancer Center of Northwestern University PHPhil HammondHoward Hughes Medical Institute EMEiji MatsudaHospital Universitario Austral

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Implication

In vitro assay demonstrates rapid chemiluminescent discrimination of all twelve single-base mismatches in nucleic acids, highlighting a fast diagnostic tool for genetic mutations.

Key Points

Develop a rapid, homogeneous in-solution chemiluminescent hybridization assay capable of detecting all 12 possible single-base mismatches in DNA and RNA targets.
Designed hybridization protection assays using oligonucleotide probes labeled with chemiluminescent acridinium ester (AE), which is shielded from alkaline hydrolysis only upon complementary duplex formation.
Assessed hydrolysis kinetics and melting temperatures (Tm) across matched versus mismatched duplexes to evaluate local helical structural effects.
Validated the assay using synthetic DNA and RNA targets, including wild-type and mutant sequences of the HIV-1 reverse transcriptase coding region.
Discriminated all 12 single-base mismatches from complementary matched targets within a 30- to 60-minute assay time.
Demonstrated that AE hydrolysis sensitivity results from localized structural perturbations caused by adjacent mismatches rather than overall duplex destabilization.
Successfully differentiated wild-type from point-mutated HIV-1 reverse transcriptase sequences in both amplified and non-amplified samples.

Cite This Study

Nelson et al. (1996) studied this question.

synapsesocial.com/papers/6a97ef850fc5fb4479fadc93 https://doi.org/10.1093/nar/24.24.4998

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Implication

In vitro assay demonstrates rapid chemiluminescent discrimination of all twelve single-base mismatches in nucleic acids, highlighting a fast diagnostic tool for genetic mutations.

Detection of All Single-Base Mismatches in Solution by Chemiluminescence

Discussion

Member takes

Implication

Key Points

Cite This Study

Detection of All Single-Base Mismatches in Solution by Chemiluminescence

Discussion

Member takes

Implication

Key Points

Cite This Study

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