ArticleProtein & cell2026
Restoring the FOXO1 geroprotective pathway via seno-resistant mesenchymal progenitor cells alleviates primate epididymal aging.
Article in Protein & cell, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Aging of the male reproductive system is characterized by declining fertility, with epididymal dysfunction being a critical yet poorly understood contributor. Through a multimodal analysis in non-human primates that integrated histology and transcriptomics, we delineated a coherent epididymal aging phenotype encompassing epithelial senescence, chronic inflammation, fibrosis, and functional decline. Single-nucleus transcriptomics revealed principal cells (PCs) as the predominant and most transcriptionally perturbed epithelial cell type. Within PCs, the longevity-associated transcription factor FOXO1 was markedly downregulated with age. Functional studies in human epididymal epithelial cells demonstrated that FOXO1 deficiency drives cellular senescence. Mechanistically, FOXO1 transcriptionally activates LHX1, and this axis is essential for counteracting senescence. Furthermore, intervention with senescence-resistant mesenchymal progenitor cells or their exosomes mitigated epididymal aging phenotypes and restored FOXO1 expression in vivo and in vitro. Our study establishes the FOXO1-LHX1 axis as a key protective pathway against primate epididymal aging, providing mechanistic insights and potential therapeutic targets for preserving male reproductive health.
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