Traditional DNA sequencing technology cannot provide the depth of information required to answer today’s complicated genomics queries. NGS has closed that gap and is now a commonplace tool for answering these queries.
NGS applications
The kind of queries and answers that scientists may now ask and answer have been drastically altered by next-generation sequencing technology. A wide range of applications are made possible by innovative alternatives for sample preparation and data processing. NGS, for instance, enables laboratories to:
Quickly sequence whole genomes
Target areas that are deeply sequenced
Quantify mRNAs for gene expression studies or use RNA sequencing (RNA-Seq) to find new RNA variations and splicing sites.
Examine epigenetic elements such DNA-protein interactions and genome-wide DNA methylation.
Sequence cancer samples to investigate tumor subclones, uncommon somatic variations, and other topics.
Examine the human microbiota.
Determine new pathogens
Principal advantages of NGS
Whole-genome sequencing that is accessible
The Human Genome Project, which used capillary electrophoresis-based Sanger sequencing, took more than ten years and cost around $3 billion.
Large-scale whole-genome sequencing (WGS), on the other hand, is now feasible and accessible for the typical researcher thanks to next-generation sequencing. It allows researchers to sequence hundreds to tens of thousands of genomes in a year or study the whole human genome in a single sequencing session.
wide dynamic range for profiling expressions
Researchers may overcome the cost and inefficiency of legacy technologies like microarrays with the help of NGS-based RNA-Seq, a potent technique. The measurement of microarray gene expression is constrained by signal saturation at the high end and noise at the low end.
Next-generation sequencing, on the other hand, provides a wider dynamic range by quantifying discrete, digital sequencing read counts.
Resolution adjustment for certain NGS
With targeted sequencing, you may effectively and economically concentrate the potential of NGS by sequencing a subset of genes or certain genomic areas of interest. Because NGS is so scalable, you may adjust the resolution to suit your experimental requirements. To detect uncommon variations in a particular location, decide whether to sequence at higher depth with fewer samples or to do a shallow sweep across several samples.
Developments in NGS technology
Recent advances in Illumina’s next-generation sequencing technology include:
When compared to traditional Illumina sequencing by synthesis (SBS) chemistry, XLEAP-SBS chemistry offers faster and higher fidelity.
Up to 16 Tb: To support data-intensive applications, the NovaSeq X Series offers exceptional sequencing power.
Revolutionary simplicity and speed: The MiSeq i100 Series provides benchtop sequencing run lengths of up to four hours, along with simplified processes and user-friendly onboard data analysis.
Semiconductor sequencing: This technique delivers high-accuracy data in a small device by combining SBS with a complementary metal-oxide semiconductor (CMOS) chip.
Patterned flow cell technology: This development offers a remarkable throughput for a variety of sequencing uses.
How NGS is used by scientists
Observe how scientists from several disciplines use next-generation sequencing to produce ground-breaking findings.
Utilizing microbiome research to advance medication discovery
Researchers and pharmaceutical businesses can improve drug discovery and development by using data from transcriptomics and whole-genome shotgun sequencing based on NGS.
Investigating the microenvironment of the tumor
Researchers investigate cancer microenvironments, clarify gene expression patterns, and learn more about treatment resistance and metastasis by using single-cell NGS approaches.
RNA extracted from cells as a non-invasive biomarker
This study demonstrates the wide range of applications for circulating cell-free RNA sequencing in noninvasive health monitoring and biomarker identification.