Teif lab

@teiflab.bsky.social

Teif lab at the University of Essex. We work on gene regulation in chromatin and applications to liquid biopsies, using approaches of genomics, biophysics, bioinformatics & AI. Our focus is nucleosomics, TF binding, CTCF, cfDNA. https://generegulation.org

Yesterday I gave a webinar for Year 12 students titled “Genomics meets AI: can we detect cancer earlier?” Alongside the science, I found a few useful ways to explain gene regulation to people without a biology background. Sharing in case useful to others. 1/4

Chen et al 2026. Genome-wide rotational and translational phasing of nucleosomes with human transcription factors www.cell.com/molecular-ce... ▶️ In vivo nucleosome phasing measured on the same TF-bound DNA molecule ▶️ Phasing around CTCF sites is DNA encoded ▶️ FoxA and NFIA phase adjacent nucleosomes

How transcription factors (TFs) and their binding sites organize and engage nucleosomes at natural genomic locations remains poorly understood. Here, we develop Benzonase-seq to measure the rotational phasing of nucleosomes in human cells and enhance chromatin immunoprecipitation (ChIP)-exo (v6) to measure rotational phasing on the same DNA molecule bound by a TF. Unbound CTCF sites were found to be rotationally accessible on nucleosomes, and this rotational accessibility is encoded by classical dinucleotide periodicities. CTCF binding results in nucleosome displacement to adjacent DNA phasing sequences. Upon examining 40 TF classes, unbound sites were found to be phased either inward or outward or to lack phasing. In all examined cases, TF binding (e.g., NFIA and FoxA) results in adjacent rotational and translational phasing, which is not dinucleotide encoded. Benzonase-seq also more robustly maps nucleosome and subnucleosome positions in hard-to-map CpG islands. These findings provide a clearer view of how TFs engage and position nucleosomes to shape the natural chromatin landscape.

Gaspa-Toneu et al, 2026. Single molecule footprinting measures low nucleosome occupancy in mature spermatozoa of mice and men www.biorxiv.org/content/10.6... ▶️ NOMe-seq at 103 and 163 genomic sites in spermatozoa of mice and human ▶️ nucleosome occupancy ∼1.2 to 1.7% in mice; ∼2.3 to 4.5% in human

Single molecule footprinting measures low nucleosome occupancy in mature spermatozoa of mice and men

Nucleosomes are fundamental units of DNA packaging and gene regulation in eukaryotes. In mammalian sperm, most nucleosomes are replaced by protamines causing extreme chromatin compaction. Various epig...

biorxiv.org

A good use of AI in text editing is interactive: it highlights issues, you try different approaches, it disagrees, you push back, and the two of you have a dialogue much as you would with a human coauthor. A refined text emerges iteratively, and you learn from the process. The process itself matters

1/9 A few thoughts and personal opinions on the use of AI in research evaluation. I suspect many of these changes may be inevitable, so the real question may not be whether this will happen, but how we shape it responsibly 🧵

Come celebrate Professor Leo Schalkwyk with us! We’re holding a one-day symposium to mark Leo's remarkable career and many contributions to genomics. 📆26 June 2026 📍University of Essex, Colchester Details and registration: schalkwykfest.essex.ac.uk There will be a BBQ as well!

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Tested LinkedIn for a paper announcement, and it worked perfectly. About 3x more engagements than on Bluesky. Obviously, LinkedIn is a different culture, more formal and less chatty, but for professional things it works just fine. Can't believe it was there all the time, and we just did not use it

Preparing a lecture about cancer genomics. Looking for a 3D map of human chromatin to show chromosomes 22 and 9 close to each other to demonstrate Philadelphia chromosome translocation. Chromosome territories like the one below don't show them together. Any other visualisations in this style?

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