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The Muscle Aging Cell Atlas presents approximately 200,000 single-cell and single-nuclei transcriptomes from 17 human donors across different ages, uncovering mechanisms of aging in muscle stem cells, myofibers and microenvironment cells, and demonstrates parallels in mouse muscle aging.
Lipid changes across the lifespan and their role in health and longevity are incompletely understood. Here, Tsugawa and colleagues conduct untargeted lipidomics across 13 sample types and four ages in mice, considering sex and microbiome dependencies. This study provides a comprehensive resource of lipid changes with aging and highlights regulatory metabolic components, such as the enzyme UGT8, as potentially responsible for male-specific glycolipid biosynthesis in the kidney.
Todorov-Völgyi, González-Gallego et al. provide a proteomic profiling of brain endothelium during aging to unveil changes undetected in transcriptomic studies, identifying a dysregulation of proteins involved in vesicle-mediated transport pathways, most prominently Arf6.
Wang et al. generate a single nucleus-resolved transcriptomic atlas of primate adrenal aging, with which they demonstrate regional changes in adrenal aging, and establish the role of LDLR in impeding cholesterol uptake and DHEA-S production in aging.
Using a multi-omics approach, Wang et al. explored sex-specific and region-specific patterns of intestinal aging in non-human primates, identifying regulators with conserved functions in Caenorhabditiselegans intestinal aging, in colitis in mice and in patient colorectal cancer samples.
Isola, Ocañas et al. report age-related changes in the mouse ovarian transcriptome at single-cell resolution, demonstrating an increase in lymphocytes that corresponds to declines in collagen degradation and accumulation of multinucleated giant cells.
