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Updated: Aug 17, 2026

Isolation of Leukocytes from the Human Maternal-fetal Interface
Published on: May 21, 2015
Response to Matters Arising: Characterization of placental fetal macrophages
1State Key Laboratory of Membrane Biology, Institute of Zoology, Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing 100101, China.
Abstract:
Chen et al.1 published a report that casts doubt on our main finding from a recent article.2 Although we acknowledge the importance of their observations, we are reserved about whether their observations would invalidate our conclusions that placental fetal macrophages are generated de novo via placental hemogenic endothelium. This Matters Arising response paper addresses the Chen et al.1 Matters Arising paper published concurrently in Developmental Cell.
Insights
This study addresses recent findings questioning placental macrophage origins. We maintain that placental hemogenic endothelium generates fetal macrophages, a key developmental process.
Area of Science:
- Developmental Biology
- Immunology
- Obstetrics
Background:
- Recent research has questioned the origin of placental fetal macrophages.
- The established understanding of macrophage development is crucial for fetal-placental health.
Discussion:
- This response paper critically evaluates the observations presented by Chen et al.
- We assess the validity of their critique concerning the origin of placental fetal macrophages.
Key Insights:
- We maintain that the data presented by Chen et al. do not invalidate our conclusion regarding the de novo generation of placental fetal macrophages.
- Our findings support the role of placental hemogenic endothelium in fetal macrophage development.
Outlook:
- Further research is needed to fully elucidate the precise mechanisms of placental macrophage development.
- This scientific exchange highlights the dynamic nature of research in developmental immunology.

