Capture Hybridization Analysis of DNA Targets

Area of Science:

• Molecular Biology
• Genomics
• Epigenetics

Background:

• Long noncoding RNAs (lncRNAs) are increasingly recognized for their roles in recruiting chromatin modifying complexes.
• Understanding lncRNA genomic localization and protein interactions is crucial for elucidating their functions.
• Existing methods may not fully capture the in vivo interactions of lncRNAs with their genomic targets and protein partners.

Purpose of the Study:

• To provide a detailed protocol for the Capture Hybridization Analysis of RNA Targets (CHART) method.
• To enable the identification of long noncoding RNA (lncRNA) genomic localization and associated proteins.
• To facilitate the study of lncRNA function, particularly in the recruitment of chromatin-modifying complexes.

Main Methods:

• Capture Hybridization Analysis of RNA Targets (CHART) protocol.
• Design of antisense capture oligonucleotides.
• Purification of formaldehyde cross-linked chromatin-associated RNA, DNA, and proteins.
• Deep sequencing of purified DNA fragments.

Main Results:

• The study provides a comprehensive protocol for performing CHART in tissue culture cells.
• Deep sequencing of purified DNA fragments allows for the profiling of potential lncRNA targets in vivo.
• The method facilitates the simultaneous identification of lncRNA genomic localization and associated proteins.

Conclusions:

• CHART is a powerful technique for investigating lncRNA-protein interactions and genomic targets.
• This protocol enables researchers to generate hypotheses about lncRNA function, including their role in chromatin regulation.
• The method supports the study of lncRNA involvement in the recruitment of chromatin-modifying complexes.