If you feel your brain power diminishing as you advance into middle age and beyond, blame your neural stem cells. In a new study published in Cell Stem Cell, a team led by USC Stem Cell scientist Michael Bonaguidi demonstrates that neural stem cells—the stem cells of the nervous system—age rapidly.

“There is chronological aging, and there is biological aging, and they are not the same thing,” said Bonaguidi, an Assistant Professor of Stem Cell Biology and Regenerative Medicine, Gerontology and Biomedical Engineering at the Keck School of Medicine of USC. “We’re interested in the biological aging of neural stem cells, which are particularly vulnerable to the ravages of time. This has implications for the normal cognitive decline that most of us experience as we grow older, as well as for dementia, Alzheimer’s disease, epilepsy and brain injury.”

In the study, first author Albina Ibrayeva, a Biology of Aging PhD candidate in the Bonaguidi Lab in the Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC, joined her colleagues in looking at the brains of young, middle-aged and old mice.

To read more, visit https://stemcell.keck.usc.edu/brains-age-faster.