SCIENCE · VERIFIED DEVELOPMENT
Single TBX5 Gene Loss Disrupts Heart DNA Architecture, Impairs Cardiac Development
WHY IT MATTERS
Understanding how a single gene copy can alter DNA architecture provides insight into the variable severity of congenital heart disease and may guide future diagnostic and therapeutic strategies.
What happened
Scientists have shown that losing just one copy of the TBX5 gene, which is linked to congenital heart disease, can disturb the three‑dimensional folding of DNA in heart cells. This architectural disruption unravels the genome’s precise structure, leading to misregulation of genes essential for building a healthy heart.
The impact varies between individual cells, offering a possible explanation for the wide range of heart defects seen in patients with the same TBX5 mutation.
Researchers suggest that this hidden mechanism may also contribute to other birth defects, highlighting the broader importance of DNA folding in development.
PRIMARY SOURCES
One faulty gene copy can make the heart’s DNA fold the wrong way
ScienceDaily · Discovery only; verify against the cited research or institution when available