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Published on: July 10, 2019
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Quantitative DNA-RNA Immunoprecipitation Sequencing with Spike-Ins
Magdalena P Crossley1, Karlene A Cimprich2
1Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA. mpcross@stanford.edu.
Methods in Molecular Biology (Clifton, N.J.)
|June 15, 2022
Summary
This study introduces a new method for mapping RNA-DNA hybrids (R-loops) genome-wide. This technique provides high-resolution, strand-specific sequencing for accurate R-loop analysis and quantitative insights into their formation.
Area of Science:
- Molecular Biology
- Genomics
- Biochemistry
Background:
- R-loops are crucial three-stranded nucleic acid structures involving RNA-DNA hybrids.
- While vital for cellular functions, R-loop dysregulation can lead to adverse outcomes.
- Genome-wide R-loop mapping is essential for understanding their biology.
Purpose of the Study:
- To present a high-resolution, strand-specific protocol for sequencing RNA-DNA hybrids genome-wide.
- To enable quantitative analysis of R-loop formation across different experimental conditions.
Main Methods:
- Development of a protocol for genome-wide sequencing of RNA-DNA hybrids.
- Incorporation of internal spike-in standards for accurate signal normalization.
- Strand-specific sequencing for high-resolution mapping.
Main Results:
- Successful genome-wide mapping of RNA-DNA hybrids with strand specificity.
- Quantitative insights into R-loop formation enabled by normalized sequencing data.
- A robust protocol applicable to diverse research contexts.
Conclusions:
- The presented protocol offers an unbiased approach to study R-loop dynamics.
- Accurate R-loop quantification is achievable through validated sequencing methods.
- This methodology advances the understanding of R-loop biology and its implications.
