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Mitochondria-enriched hematopoietic stem cells exhibit elevated self-renewal capabilities, thriving within the context of aged bone marrow [single cell multiome]

GSE262784 Mus musculus Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing 8 samples Submitted 2025/01/08 Platform GPL28457
Summary
The aging of hematopoietic stem cells (HSCs) significantly alters their characteristics. Mitochondria, essential for cellular metabolism, play a crucial role, and their dysfunction is a hallmark of aging-induced changes. The impact of mitochondrial mass on aged HSCs remains incompletely understood. Here, we demonstrate that HSCs with high mitochondrial mass during aging are not merely cells that have accumulated damaged mitochondria and become exhausted. Instead, these HSCs retain a high regenerative capacity and remain in the aging bone marrow. Furthermore, we identified GPR183 as a novel marker characterizing aged HSCs through single-cell analysis. HSCs marked by GPR183 were also enriched in aged HSCs with high mitochondrial mass, possessing a high capacity of self-renewal. These insights deepen our understanding of HSC aging and provide new perspectives on the assessment of aged HSCs, underscoring the importance of mitochondrial dynamics in the aging.
Published in
Mitochondria-enriched hematopoietic stem cells exhibit elevated self-renewal capabilities, thriving within the context of aged bone marrow
Totani H, Matsumura T, Yokomori R et al. · Nature aging 2025 · PMID 40050412 · doi:10.1038/s43587-025-00828-y
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Also filed as BioProject PRJNA1093379 and SRA study SRP498618. Searching any of these in the dataset finder brings you back here.

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