Capture the in vivo intact RNA structurome by CAP-STRUCTURE-seq

Area of Science:

• Molecular Biology
• Genomics
• Biochemistry

Background:

• RNA decay is vital for cellular homeostasis and gene expression regulation, with decay rates impacting mRNA levels significantly.
• Structured RNA elements, particularly in non-coding regions, play a role in regulating RNA decay.
• Advancements in sequencing and in vivo chemical probing have enhanced understanding of RNA folding.

Purpose of the Study:

• To investigate RNA structure elements responsible for RNA cleavage.
• To develop a method for capturing RNA structure immediately before decay.
• To study the impact of RNA structure on RNA decay in greater detail.

Main Methods:

• Introduction of CAP-STRUCTURE-seq, a modified STRUCTURE-Seq approach.
• Enrichment of intact mRNAs using terminator exonuclease treatment (5'-Phosphate-Dependent Exonuclease).
• Digestion of RNA with 5-monophosphate ends to isolate intact RNA molecules for structural analysis.

Main Results:

• The CAP-STRUCTURE-seq method allows for the investigation of RNA structures in intact RNA molecules.
• This approach enables a detailed study of the relationship between RNA structure and RNA decay.
• The method provides a means to capture RNA structure prior to cleavage events.

Conclusions:

• CAP-STRUCTURE-seq offers new insights into the function of RNA structure in RNA decay.
• This technique advances the understanding of biological processes regulated by RNA decay.
• The study highlights the importance of RNA structure in controlling mRNA stability and gene expression.