Decidual macrophages in advanced maternal age pregnancies exhibit accelerated senescence driven by FOXO3 deficiency and elevated uterine IL-6, resulting in pro-inflammatory polarization and impaired immune function. Adoptive transfer of young macrophages rescues adverse pregnancy outcomes, establishing cellular senescence as a reversible mechanism underlying age-related pregnancy complications.
Key Points
- Decidual macrophage senescence correlates with adverse outcomes in advanced maternal age
- FOXO3 deficiency and elevated IL-6 drive pro-inflammatory polarization and reduced phagocytosis
- Young macrophage transfer reverses embryo resorption and improves placental development
Longevity Analysis
This work demonstrates that immune cell senescence propagates dysfunction in solid tissues—in this case, the reproductive system—and that cellular aging phenotypes are reversible through strategic intervention. The finding extends beyond obstetrics: if senescent macrophages in the decidua drive adverse outcomes through inflammatory signaling and compromised tissue surveillance, the same principle likely applies to aging in other organ systems where macrophages mediate immunity and tissue homeostasis. The capacity to rescue function through young cell transfer suggests that immunosenescence is not an irreversible terminal state but a modifiable condition, opening pathways to investigate similar reversals in cardiovascular, metabolic, and neurological aging.
Original published by Wiley Aging Cell, by Yujing Zhang, Yiming Zhang, Guangshun Gong, Zhijing Li, Wenjing Xiong, Xuhui Fang, Ning Lu, Di Wang, Yihui Li, Aihua Liao .