Evaluation of Nanopore direct RNA sequencing updates for modification detection

Area of Science:

• Molecular Biology
• Genomics
• Bioinformatics

Background:

• Direct RNA sequencing offers native RNA analysis.
• Nanopore technology enables detection of RNA modifications.
• Recent updates include RNA004 chemistry and Dorado basecaller.

Purpose of the Study:

• Compare RNA002 and RNA004 chemistries.
• Evaluate Dorado basecaller for RNA modification detection.
• Assess accuracy of pseudouridine and N6-methyladenosine calling.

Main Methods:

• Direct RNA sequencing using Nanopore.
• Comparison of RNA002 and RNA004 chemistries.
• Utilized Dorado basecaller and m6anet for modification analysis.

Main Results:

• Dorado showed improved accuracy for RNA modifications.
• Pseudouridine detection accuracy: 96-98%.
• N6-methyladenosine detection accuracy: 94-98%.

Conclusions:

• Nanopore Direct RNA sequencing detects multiple RNA modifications simultaneously.
• Dorado enhances accuracy for pseudouridine and N6-methyladenosine.
• Orthogonal validation is crucial for high-confidence modification calls.