Left-handed DNA-PAINT for improved super-resolution imaging in the nucleus.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33398151.
- Also identified by DOI 10.1038/s41587-020-00753-y.
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Abstract
DNA point accumulation in nanoscale topography (DNA-PAINT) increases the resolution and multiplexing capabilities of super-resolution imaging, but cellular DNA interferes with DNA-DNA hybridization between target and probe in the nucleus. Here, we introduce left-handed DNA (L-DNA) oligomers that do not hybridize to natural right-handed DNA (R-DNA) and demonstrate that L-DNA-PAINT has the same specificity and multiplexing capability as R-DNA-PAINT, but improves the imaging of nuclear targets by substantially reducing background signal.
Medical subject headings
- Cell Nucleus
- DNA
- Molecular Imaging
- Stereoisomerism