Gel-seq: whole-genome and transcriptome sequencing by simultaneous low-input DNA and RNA library preparation using...

Area of Science:

• Genomics
• Molecular Biology
• Biotechnology

Background:

• Standard next-generation sequencing protocols are incompatible for DNA and RNA analysis.
• Researchers must choose between analyzing the genome or transcriptome from a single sample.
• This limits the ability to directly correlate genomic changes with transcriptomic expression.

Purpose of the Study:

• To introduce Gel-seq, a novel device and method for simultaneous DNA and RNA sequencing.
• To enable direct examination of genome-transcriptome relationships.
• To facilitate analysis from minimal cell inputs.

Main Methods:

• Development of a new device utilizing polyacrylamide membranes for electrophoretic separation of DNA and RNA.
• Establishment of a manufacturing protocol for the Gel-seq device.
• Establishment of a biological protocol for preparing genetic libraries using Gel-seq.
• Validation using cell lines (PC3 and Hela) and a mouse liver tumor sample.

Main Results:

• Gel-seq successfully separates DNA and RNA physically.
• Libraries generated by Gel-seq are comparable to standard RNA and DNA sequencing methods.
• Demonstrated simultaneous generation of matched genome and transcriptome libraries from 100 cells.

Conclusions:

• Gel-seq provides a powerful tool for simultaneous genome and transcriptome sequencing.
• This technology overcomes previous limitations in analyzing both nucleic acid types from the same sample.
• Enables high-resolution studies of genome-transcriptome interplay, even with limited cellular material.