Placental Cellular Dynamics in Maternal-Fetal Interaction

The human placenta is a dynamic organ that orchestrates nutrient exchange, immune tolerance and vascular remodelling to support fetal development. Its functionality depends on a finely tuned interplay between distinct trophoblast populations and the maternal decidua. Cytotrophoblasts proliferate and differentiate into syncytiotrophoblasts, which form the primary barrier and mediate nutrient and gas exchange, and into extravillous trophoblasts, which invade the maternal decidua and remodel spiral arteries. These processes are governed by evolving gene regulatory networks, epigenetic modifications and precise cell–cell communication events. Disruption of placental cellular dynamics underlies pregnancy complications such as pre-eclampsia, intrauterine growth restriction and placenta accreta. Recent advances in single-cell and multi-omic technologies have begun to resolve the cellular trajectories, transcriptional programmes and spatial organisation of the maternal–fetal interface, offering new avenues for understanding placental adaptation, predicting adverse outcomes and designing targeted interventions.

Research from Nature Portfolio

A spatially resolved multi-omic atlas of the maternal–fetal interface has delineated the full trajectory of trophoblast differentiation from cytotrophoblast progenitors to invasive extravillous subtypes, defining the transcriptomes of placental bed giant cells and endovascular trophoblasts. This work illuminates the transcription factors that drive arterial transformation and supports the development of in vitro trophoblast organoid models.

Single-nucleus integration of transcriptomic and chromatin accessibility profiling across early and late gestation has uncovered dynamic heterogeneity within the syncytiotrophoblast layer. Distinct nuclear lineages were mapped, and key regulators were validated in trophoblast stem cell-derived models, providing insight into how syncytial nuclei contribute to placental function and pregnancy complications.

Comprehensive mapping of the epigenome and transcriptome during extravillous trophoblast lineage specification has revealed a dynamic regulatory network involving TFAP2C, SNAI1 and EPAS1. This integrative analysis has linked EPAS1-driven programmes to birth weight variation and pregnancy loss, offering a molecular framework for understanding arterial remodelling by invasive trophoblasts.

Placental Cellular Dynamics in Maternal-Fetal Interaction publication trend

The graph below shows the total number of articles in placental cellular dynamics in maternal-fetal interaction across all publications each year (not limited to Nature Index journals).

Technical terms

Extravillous trophoblast (EVT): A specialised trophoblast subtype that invades the maternal decidua and remodels spiral arteries to establish adequate blood flow.

Syncytiotrophoblast (STB): A multinucleated epithelial layer formed by the fusion of cytotrophoblasts, responsible for nutrient and gas exchange at the maternal–fetal interface.

Cytotrophoblast (CTB): Proliferative mononuclear trophoblast progenitors that differentiate into syncytiotrophoblasts and extravillous trophoblasts.

Single-cell RNA sequencing (scRNA-seq): A technology that profiles gene expression at the resolution of individual cells to reveal cell heterogeneity and developmental trajectories.

Spatial transcriptomics: A method for mapping gene expression within tissue sections, preserving the spatial context of cellular interactions.

References

1. Spatial multiomics map of trophoblast development in early pregnancy. Nature (2023).
2. Single-nucleus multi-omic profiling of human placental syncytiotrophoblasts identifies cellular trajectories during pregnancy. Nature Genetics (2024).
3. Extravillous trophoblast cell lineage development is associated with active remodeling of the chromatin landscape. Nature Communications (2023).
4. Revealing the molecular landscape of human placenta: a systematic review and meta-analysis of single-cell RNA sequencing studies. Human Reproduction Update (2024).
5. Single-cell and spatial transcriptomics reveal alterations in trophoblasts at invasion sites and disturbed myometrial immune microenvironment in placenta accreta spectrum disorders. Biomarker Research (2024).
6. Single-cell RNA-seq reveals the diversity of trophoblast subtypes and patterns of differentiation in the human placenta. Cell Research (2018).