Monthly Archives: June 2012


What’s so special about single molecule sequencing? 2

A few days ago I reviewed in brief the history of Helicos Biosciences (HCLS), a company that held out the promise of single molecule sequencing, but failed to deliver on several fronts to the next-generation sequencing market. (This would include accuracy, throughput per dollar, and ease of use / reliability […]


Helicos Single Molecule Sequencing – A Pioneer 8

The next-generation sequencing market continues its downward trajectory – routinely violating Moore’s Law by an estimated 3x, the cost per megabase curve started to significantly bend downward around 2007 when the Solexa 1G started selling in volume, and gave the 454 GS20 (as it was known then) the first competition […]


Complete Genomics and the Whole Genome Sequencing market 3

Complete Genomics is a startup business founded upon a particular idea – that the whole genome sequencing of human individuals is going to be industrialized, commonplace, and have such clinical utility so as to become the dominant application for next-generation sequencing. (Disclosure – I have no financial interest in this […]


Next Generation Sequencing – Sequencing by Pyrophosphate Release

After preparation of the library (and careful quantitation) and preparation of the amplified template comes the main event: the sequencing itself. While there are several methods available, the methods can be divided into three broad divisions. The three divisions are (firstly) Pyrophosphate Release (named for the original patent by Mostafa […]


Next Generation Sequencing – Template Preparation 1

After a library is properly prepared, (remember it can be from many sources – randomly sheared genomic DNA, cDNA from a small RNA sample, an immunoprecipitated sample) the library molecules need to be amplified in some manner, before the sequencing takes place. Thus there is a critical need for accurate […]