Abstract
Aging An important consequence of aging is loss of regenerative capacity in stem cells, particularly those of the nervous system. Leeman et al. isolated quiescent and activated stem cells from mice and compared their transcriptomes. The findings emphasize the role of large lysosomes in quiescent neuronal stem cells in which aggregated proteins accumulate. Treatments that stimulated lysosomal function allowed aged quiescent stem cells to clear protein aggregates and restored the cells' ability to be activated. Such restoration of stem cell function might alleviate compromised proteostasis in aging. Science , this issue p. [1277][1] [1]: /lookup/doi/10.1126/science.aag3048
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