期刊
出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2109252118
关键词
pregnancy; uterus; PARP-1; PARP-2; ADP-ribosylation
资金
- NIH, National Institute of Diabetes, Digestive, and Kidney Disorders (NIDDK) [R01 DK069710]
- NIH, National Institute of Child Health and Human Development (NICHD) [P01 HD087150]
- Cecil H. and Ida Green Center for Reproductive Biology Sciences Endowment
- NIH/NICHD Postdoctoral Fellowship [F32 HD100103]
This study found that catalytic inhibition or genetic ablation of PARP-1 and PARP-2 in the uterus led to pregnancy loss in mice, associated with increased p53 signaling and an increased population of senescent decidual cells, with decidualization failure being the cause of pregnancy loss.
Miscarriage is a common complication of pregnancy for which there are few clinical interventions. Deficiency in endometrial stromal cell decidualization is considered a major contributing factor to pregnancy loss; however, our understanding of the underlying mechanisms of decidual deficiency are incomplete. ADP ribosylation by PARP-1 and PARP-2 has been linked to physiological processes essential to successful pregnancy outcomes. Here, we report that the catalytic inhibition or genetic ablation of PARP-1 and PARP-2 in the uterus lead to pregnancy loss in mice. Notably, the absence of PARP1 and PARP-2 resulted in increased p53 signaling and an increased population of senescent decidual cells. Molecular and histological analysis revealed that embryo attachment and the removal of the luminal epithelium are not altered in uterine Parp1, Parp2 knockout mice, but subsequent decidualization failure results in pregnancy loss. These findings provide evidence for a previously unknown function of PARP-1 and PARP-2 in mediating decidualization for successful pregnancy establishment.
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