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Le Roch Lab
Blood smear with Plasmodium parasites at several stages of development

Research

Computational Biology

The question

Enough data that the model becomes the experiment.

Using large genomic data sets and machine learning models to better understand gene regulation in malaria parasites.

Every assay the lab runs produces a genome-wide table, and none of them explains regulation on its own. The question is what happens when they are read together: whether sequence, accessibility, histone marks and 3D contacts taken jointly predict when a gene is expressed.

We build the pipelines and models that make that possible — 3D genome reconstructions from Hi-C contact maps, nucleosome-landscape analysis that has surfaced genes the annotation missed, and machine learning trained across data types to predict expression and prioritise regulatory elements. The methods are developed on Plasmodium and carry over to the other apicomplexans the lab works on.

Machine learning schematic taking DNA sequence, chromatin accessibility, histone modifications, transcriptomics, transcription factors and 3D genome architecture as inputs, and predicting gene expression, regulatory elements, transcription-factor binding and target genes
Sequence, accessibility, histone marks, transcriptomics and 3D architecture as joint inputs to a model that predicts expression and prioritises regulatory elements.

How we look

Techniques used in this area

Modelling & analysis

  • Machine learning
  • 3D genome modelling
  • Nucleosome-landscape analysis

Data types

  • Hi-C
  • RNA-seq
  • ChIP-seq
  • BS-seq

Platforms

  • Illumina
  • Oxford Nanopore
  • PacBio