Enhancing the brain's clean up crews
Enhancing the brain’s own clean-up crews could be a strategy for handling the toxic proteins driving several neurodegenerative diseases, new research suggests.
Astrocytes, an abundant supportive cell type in the brain, are better than neurons at disposing of mutant huntingtin, the toxic protein that drives Huntington’s disease pathology, Xiao-Jiang Li and colleagues report in PNAS. Dr. Li is a faculty member in the GMB and NS programs.
One reason why astrocytes are better at toxic protein defense than neurons is: they have less of an inhibitory protein called HspBP1. The scientists show that using CRISPR/Cas9 to “knock down” HspBP1 can help neurons get rid of mutant huntingtin and reduce early pathological signs.