How human-only DNA switches shape brain development and growth signals
Roles for uniquely human enhancers in brain development and WNT signaling
This work looks at tiny human-specific DNA switches that change how the developing brain grows and how growth signals related to autism work.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Duke University NIH-funded |
| Lab location | 1 site (Durham, United States) |
| Project ID | NIH-11249156 on NIH RePORTER |
What this research studies
Researchers are studying short DNA regions called human accelerated regions (HARs) that act like switches to control genes during brain development. They compare human and non-human versions, use lab-grown human neural cells, and use mice engineered to carry the human enhancer to see how those switches change cell growth and wiring. The team focuses on a specific enhancer, HARE5, and its effect on nearby genes such as FZD8 and on WNT signaling, a pathway linked to brain size and neurodevelopmental conditions. Molecular assays and genetic analyses are used to connect sequence changes to cellular and anatomical changes.
Who could benefit from this research
Good fit: This is primarily lab-based, but it is most relevant to people with autism or families who might consider donating genetic or biological samples to related research at the institution.
Not a fit: People seeking immediate treatments or those without neurodevelopmental differences are unlikely to receive direct benefit from this basic science work.
Why it matters
Potential benefit: If successful, this work could clarify biological causes of autism and point toward new diagnostic markers or therapeutic targets in the long term.
How similar studies have performed: Earlier experiments with humanized HARE5 in mice produced increased neural progenitors and brain growth, so parts of this approach have shown measurable effects though links to autism remain early.
Where this research is happening
Durham, United States
- Duke University — Durham, United States (Active)
Researchers
- Principal investigator: Silver, Debra L. — Duke University
- Study coordinator: Silver, Debra L.
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.