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Sequencing of mRNA from Whole Blood using Nanopore Sequencing

Sequencing of mRNA from Whole Blood using Nanopore Sequencing

Published on: June 3, 2019

Pair consensus decoding improves accuracy of neural network basecallers for nanopore sequencing.

Jordi Silvestre-Ryan¹, Ian Holmes²

¹Department of Bioengineering, University of California, Berkeley, 94720, USA. jordisr@berkeley.edu.

|January 20, 2021

Summary

This summary is machine-generated.

We developed PoreOver, a computational method that improves DNA sequencing accuracy by combining neural network predictions. This tool significantly reduces errors in Oxford Nanopore sequencing data.

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Area of Science:

Genomics and Bioinformatics
Computational Biology

Background:

Oxford Nanopore sequencing offers rapid, long-read DNA analysis.
Accurate basecalling is crucial for reliable genomic data interpretation.
Existing basecalling algorithms have limitations in error rates.

Purpose of the Study:

To develop a general computational approach for enhancing basecalling accuracy in Oxford Nanopore sequencing.
To create software compatible with various nanopore basecallers, including 1D² protocols.
To reduce the median sequencing error rate in nanopore data.

Main Methods:

Developed PoreOver, a software tool that computes a consensus of multiple neural network predictions.
Implemented an alignment of probability profiles from different basecallers.
Ensured compatibility with multiple nanopore basecalling algorithms.

Main Results:

PoreOver successfully improves basecalling accuracy across different nanopore protocols.
When applied to the Bonito basecaller, PoreOver reduced the median sequencing error by over 50%.
The consensus approach effectively leverages the strengths of individual basecalling models.

Conclusions:

PoreOver provides a versatile and effective method for improving nanopore sequencing accuracy.
This approach offers a significant advancement for researchers utilizing Oxford Nanopore technology.
The software is publicly available to facilitate broader adoption and further development.