Glycogen phosphatase modulates brain metabolism
Researchers have discovered that the catalytically inactive form of the laforin protein, LCS, prevents Lafora bodies but fails to restore normal brain metabolism. This suggests that laforin's phosphatase activity is essential for maintaining healthy metabolic processes in the brain.
Why it matters
Understanding the specific role of laforin in glycogen metabolism is critical for developing effective treatments for the fatal neurodegenerative disorder Lafora disease.
Lafora disease, or LD, is a rare but fatal neurodegenerative disorder in which aggregates of abnormal, hyperphosphorylated glycogen form inclusions called Lafora bodies. LD can be caused by mutations in the gene encoding the glycogen phosphatase laforin. In studies of LD, a catalytically inactive form of laforin called LCS is often used as a negative control, but unexpectedly, mice lacking laforin and expressing LCS exhibit almost no Lafora bodies. Therefore, it remained unclear whether the catalytic activity of laforin as a phosphatase is necessary to protect against LD.
The article is a straightforward summary of scientific research findings without political or social framing.
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