ArticleActa histochemica et cytochemica2025
On the Similarity Between Postpartum Autoimmune Abnormalities and Immune-Related Adverse Events (irAE) by Immune Checkpoint Inhibitors (ICI): The Placenta as a PD-L1-Rich Immune-Tolerant Organ.
Article in Acta histochemica et cytochemica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Pregnancy Outcomes After in Utero Exposure to Immune Checkpoint Inhibitors.Current oncology (Toronto, Ont.) · 2026Review
- Intracellular Localization of PD-L1 in Rab10-positive Open Tubular Endosome System of Cancer Cells.Acta histochemica et cytochemica · 2026Article
- Intracellular Transport of PD-L1 by Rab10-Positive Tubular Endosomes Originated from Macropinocytic Cups in RAW264 Macrophage-Like Cells.Acta histochemica et cytochemica · 2025Article
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2 authors.
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Abstract
Immune tolerance is essential for safeguarding the body's own tissues from immune system attacks. During pregnancy, the maternal immune system tolerates the semi-allogeneic fetus through mechanisms such as placental programmed cell death 1 (PD-1)-ligand 1 (PD-L1) expression, regulatory T cells (Tregs), cytokine modulation, and hormonal changes. Placental PD-L1 is particularly important in suppressing maternal immune responses and preventing fetal rejection. Following delivery, the loss of the PD-L1-rich placenta can destabilize immune tolerance, potentially leading to postpartum autoimmune diseases such as fulminant type 1 diabetes, characterized by rapid insulin depletion and severe hyperglycemia. Similarly, immune checkpoint inhibitors (ICIs), widely used in cancer immunotherapy, block immune checkpoints like PD-1 and PD-L1 to enhance antitumor immunity by disrupting immunotolerance to tumors. However, this mechanism can sometimes result in immune-related adverse events (irAEs), including fulminant type 1 diabetes. Given the critical role of HLA haplotypes and environmental factors in the development of autoimmune conditions, identifying shared factors among postpartum individuals and patients undergoing ICI therapy who experience immune system abnormalities could provide valuable insights. Such understanding may improve strategies for managing autoimmune diseases associated with both postpartum immune changes and ICI treatments.
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