AI Insight
Researchers have developed a new approach to study how genetic variants contribute to disease risk in rare immune cells. The study reveals that disease-associated genetic variants often do not affect nearby genes on the chromosome, but instead influence distant genes through three-dimensional DNA folding that brings far-apart regions into physical contact within the cell. This method enables investigation of genetic risk mechanisms that were previously inaccessible due to the rarity of certain immune cell types.
Why it matters
This approach could help explain the biological mechanisms underlying many genetic disease associations that have remained mysterious. By revealing how genetic variants actually function through long-range DNA interactions, it may lead to better identification of therapeutic targets and improved understanding of immune-related diseases.
Understand the Science
Much of how genetic risk leads to disease has remained hidden. In many cases, genetic variants linked to disease do not act on nearby genes along the chromosome. Instead, they influence genes located far away along the DNA sequence. This happens because DNA is folded inside the cell, bringing distant regions into physical contact.
Source: New approach opens rare immune cells to genetic risk research