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Home NEWS Science News Health

Study gives clues to the origin of Huntington’s disease, and a new way to find drugs

Bioengineer by Bioengineer
September 17, 2019
in Health
Reading Time: 2 mins read
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Credit: Laboratory of Stem Cell Biology and Molecular Embryology at The Rockefeller University

The first signs of Huntington’s, an inherited disease that slowly deteriorates bodies and minds, don’t typically surface until middle age. But new findings suggest that something in the brain might be amiss long before symptoms arise, and earlier than has ever been observed. Using a new technology, Rockefeller scientists were able to trace the causes of the disease back to early developmental stages when the brain has only just begun to form.

Developed in the lab of Ali Brivanlou, the Robert and Harriet Heilbrunn Professor, the system uses neuroloids–tiny, three-dimensional tissue cultures that serve as models for whole organs. The researchers create these cell clumps from human embryonic stem cells and manipulate them in the lab to study how developmental diseases arise.

Previous work in the Brivanlou lab found evidence that the disease arises in young neurons; but this latest study takes the developmental timeframe back even further, to the step in the brain’s development when cellular uniformity gives way to the emergence of particular structures, a process called neurulation. When the researchers introduced into neuroloids a mutation known to cause Huntington’s, it consistently caused dramatic effects with abnormally shaped tissue structures. “Something’s collapsed,” Brivanlou says.

The researchers have started using the technology to screen for drugs that prevent these abnormalities, an approach they hope will provide a powerful alternative to similar work being done in animal models.

“This technology really opens a door toward identifying that mechanisms that govern brain development, understanding how they go awry in disease, and testing drugs that set these mechanisms back on the right course,” says Brivanlou.

###

Media Contact
Katherine Fenz
[email protected]

Original Source

https://www.rockefeller.edu/news/26560-study-gives-clues-origin-huntingtons-disease-new-way-find-drugs/

Related Journal Article

http://dx.doi.org/10.1038/s41587-019-0237-5

Tags: BiologyBiotechnologyDevelopmental/Reproductive BiologyMedicine/HealthMolecular Biologyneurobiology
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