Autophagy Mechanisms in Maternal-Fetal Health

Autophagy is an evolutionarily conserved recycling pathway that degrades cytoplasmic components through lysosomal machinery, playing a pivotal role in maintaining cellular homeostasis under stress. In the context of pregnancy, autophagy orchestrates trophoblast differentiation, invasion and survival at the maternal–fetal interface, thereby underpinning placental development, nutrient transport and immunological tolerance. Controlled autophagic flux supports adaptation to fluctuating oxygen and nutrient availability during early gestation, whereas dysregulation can precipitate placental insufficiency, pre-eclampsia, intrauterine growth restriction and gestational diabetes. Recent advances have elucidated molecular regulators of autophagy in trophoblasts, highlighted crosstalk with endoplasmic reticulum stress and immune signalling, and revealed how selective forms of autophagy, such as mitophagy, contribute to mitochondrial quality control in placental cells.

Research from Nature Portfolio

Studies have demonstrated that excessive endoplasmic reticulum stress in trophoblast cells disrupts lysosomal biogenesis and trafficking, leading to blockade of autophagic flux and impaired clearance of protein aggregates. This lysosomal dysfunction has been observed in pre-eclamptic placentas alongside diminished secretion of lysosomal markers in maternal serum, implicating compromised autophagy in disease pathology. In parallel, investigations into the regulation of trophoblast invasiveness have revealed that inhibition of core autophagy proteins enhances activation of the NF-κB pathway, elevates matrix metalloproteinase expression and alters the secretory profile of angiogenic factors. These findings establish mechanistic links between autophagy modulation and placental remodelling processes essential for healthy pregnancy outcomes.

Autophagy Mechanisms in Maternal-Fetal Health publication trend

The graph below shows the total number of articles in autophagy mechanisms in maternal-fetal health across all publications each year (not limited to Nature Index journals).

Technical terms

Autophagy: A conserved intracellular process for degradation and recycling of cytoplasmic constituents via lysosomes.

Autophagic flux: The dynamic process encompassing autophagosome formation, lysosomal fusion and cargo degradation.

Mitophagy: Selective autophagy of mitochondria to ensure mitochondrial quality control.

Trophoblast: Specialized placental cells mediating implantation, invasion and maternal–fetal exchange.

Endoplasmic reticulum stress: A condition arising from accumulation of unfolded proteins in the endoplasmic reticulum, triggering adaptive responses.

Transcription factor EB (TFEB): A master regulator of lysosomal biogenesis and autophagy gene expression.

References

1. The regulated cell death at the maternal-fetal interface: beneficial or detrimental?. Cell Death Discovery (2024).
2. Cadmium exposure activates mitophagy through downregulating thyroid hormone receptor/PGC1α signal in preeclampsia. Ecotoxicology and Environmental Safety (2024).
3. Dysregulation of Histone Deacetylases Inhibits Trophoblast Growth during Early Placental Development Partially through TFEB-Dependent Autophagy-Lysosomal Pathway. International Journal of Molecular Sciences (2023).
4. Endoplasmic reticulum stress disrupts lysosomal homeostasis and induces blockade of autophagic flux in human trophoblasts. Scientific Reports (2019).
5. Autophagy regulates trophoblast invasion by targeting NF-κB activity. Scientific Reports (2020).