Researchers have used 3D DNA mapping in rare immune cells to identify new genes connected to autoimmune disease risk. The work focuses on how DNA is arranged inside cells, where it is tightly folded rather than stretched out in a simple straight line.
That three-dimensional folding matters because it can bring distant parts of the genome into contact, helping control when genes are switched on or off. By looking at this structure in uncommon immune cell types, scientists were able to spot genetic links that may be missed by standard DNA studies.
The findings add to evidence that disease risk is not only about which genetic variants a person carries, but also about how those variants interact within the folded genome. In autoimmune conditions, where the immune system mistakenly attacks the body, these hidden connections could help explain why certain genes influence risk.
The study points to a more detailed way of understanding autoimmune disease biology. Mapping DNA architecture in specific immune cells may help researchers uncover new targets for future investigation and improve how genetic risk is interpreted.
