21 07, 2017

DAP-Seq for higher-throughput transcription factor analysis

By | July 21st, 2017|Categories: Methods and applications, Next-generation sequencing|0 Comments

The Ecker lab at the Salk Institute published a method for very high-throuphut transcription factor analysis in Nature Protocols yesterday: Mapping genome-wide transcription-factor binding sites using DAP-seq. The method is elegantly simple in its concept; PCR-free libraries from native gDNA are hybridised with affinity-tagged in vitro-expressed transcription factors, […]

12 07, 2017

ctDNA analysis from 250pg

By | July 12th, 2017|Categories: Methods and applications, Next-generation sequencing|2 Comments

A recent paper in Nature Scientific Reports from Maurice Jansen’s group at the Erasmus Medical Centre in Rotterdam presents ctDNA analysis by targeted NGS from just 250pg of input cfDNA . This is a very small amount of material, and although the authors do discuss […]

10 07, 2017

Cancer amplicon nanopore sequencing

By | July 10th, 2017|Categories: Uncategorized|0 Comments

Prof Yutaka Suzuki’s lab at the University of Tokyo published a paper last week in DNA research: Sequencing and phasing cancer mutations in lung cancers using a long-read portable sequencer. In the paper they described their work detecting SNVs in EGFR, KRAS, NRAS and NF1, and EML4-ALK, […]

22 05, 2017

#singlecell seance at the Earlham Institute

By | May 22nd, 2017|Categories: Uncategorized|0 Comments

Iain Macaulay organised a #singlecell meeting at Norwich’s Earlham Institute earlier this month. The meeting was fun and there were some great presentations during a day of talks and discussion on the development and application of single cell technologies. 100+ #singlecell analysis methods at www.tinyurl.com/mqabyur One that […]

11 05, 2017

Update on @illumina index-swapping: better libraries

By | May 11th, 2017|Categories: Methods and applications, Next-generation sequencing|Tags: |3 Comments

Index-swapping appears to be driven by excess adapter/primer (Illumina whitepaper). The take-home messages are 1) to use UDIs (unique dual-indexes), and 2) clean-up your libraries to remove left-over adapter/primer. Later in this post I’m going to work through one solution for getting rid of any remaining adapter/primer in an NGS library; but […]

5 05, 2017

Inflection points for @nanopore sequencing

By | May 5th, 2017|Categories: Methods and applications, Nanopore sequencing, Next-generation sequencing|6 Comments

When will nanopore sequencing push short-reads (i.e. Illumina) off their pedestal? According to Clive PromethION is the Illumina killer…but this same conversation was going on many times at London Calling. I wanted to highlight two areas that might be about to flip to ONTs advantage […]

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