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PD‐1‐Enhanced Treg Cell Senescence in Advanced Maternal Age
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PD‐1‐Enhanced Treg Cell Senescence in Advanced Maternal Age
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Journal Article
PD‐1‐Enhanced Treg Cell Senescence in Advanced Maternal Age
2025
Overview
Senescence occurs earlier in the immune system than in solid organs as age increases. Regulatory T (Treg) cells are among the first cells to exhibit signs of aging. However, whether advanced‐age pregnancy involves Treg cell aging remains unclear. This study demonstrated that the aging of women is accompanied by aging Treg cells and that PD‐1 regulates Treg cell aging. The transfer of young Treg cells can improve the pregnancy outcomes of reproductive‐aged mice by reducing the level of IFN‐γ, a proinflammatory cytokine secreted by Treg cells in aged mice. Transferring α‐PD‐1 mAb‐treated aged Treg cells increases the level of IL‐10, an anti‐inflammatory cytokine secreted by Treg cells in reproductive‐aged mice. Collectively, these findings suggest a potential therapeutic strategy for preventing adverse pregnancy outcomes in older women. Gong et al. first discovered that Treg cells in advanced maternal aged pregnancies exhibited cell senescence as well as functional defects. Moreover, PD‐1 may serve as a novel marker of aged Treg cells. Notably, transferring younger Treg cells or aged Treg cells pretreated with anti‐PD‐1 mAbs improves pregnancy outcomes in aged mouse foster mothers. These findings provide a new strategy for preventing adverse pregnancy outcomes in older women.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc,Wiley
Subject
/ Age
/ Aging
/ Animals
/ Cellular Senescence - immunology
/ Female
/ Females
/ Humans
/ Mice
/ Programmed Cell Death 1 Receptor - immunology
/ Programmed Cell Death 1 Receptor - metabolism
/ programmed cell death protein 1
/ senescence‐associated secretory phenotype
/ T-Lymphocytes, Regulatory - immunology
