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Immune-cell atlas traces disease risk through gene regulation

A new immune-cell atlas connects disease-associated genetic variants with the regulatory DNA they affect and the genes those regions control. Researchers paired measurements in roughly 10 million cell nuclei from 1,108 Finnish participants. The work helps identify candidates for further experiments by tracing a regulatory chain, while many proposed disease mechanisms remain to be confirmed.

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A researcher holding a blood-sample tube beside a microscope in a bright laboratory.

The atlas connects risk variants to active genes

A new immune-cell atlas connects disease-associated genetic variants with the genes they regulate. The study pairs chromatin accessibility, meaning how open DNA is to regulatory activity, with gene expression in the same cells. Its results were published in Nature on September 30.[1], [2]

Many disease-risk variants sit outside protein-coding genes. They can instead affect stretches of DNA that control when nearby genes become active. Researchers studied roughly 10 million cell nuclei from blood samples of 1,108 participants in Finland, creating a detailed map of these regulatory relationships across immune cells.[1]

Paired measurements trace a regulatory chain

The paired measurements link a variant to altered accessibility in a regulatory region and then to the activity of a nearby gene. Variants completing that chain were about twice as likely to coincide with disease signals as those affecting accessibility alone. This approach helps prioritize potential mechanisms for further experiments.[1]

Blood-cell data define the atlas’s scope

The researchers tested some candidate regulatory effects with high-throughput assays. Many links nevertheless remain proposed mechanisms requiring experimental confirmation. The atlas draws on blood cells from Finland, while diseased tissues can contain other cell states. Its associations concern immune disease and cancer research; the analysis did not measure diagnosis, drug response or patient benefit.[1]

References

  1. News sourceNatureImmune-cell atlas links genetic risk to regulatory pathways↩1↩2↩3↩4
  2. News sourceBroad InstituteImmune-cell atlas connects disease-linked variants to gene regulation↩
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