Impact of Maternal Obesity on Infant UC-MSC Adipogenesis and Mitochondrial Function
Overview
Umbilical cord mesenchymal stem cells (UC-MSCs) from infants born to mothers with overweight or obesity exhibit impaired adipogenic differentiation and reduced mitochondrial respiratory capacity compared to those from normal-weight mothers. These alterations suggest prenatal maternal obesity disrupts early adipose precursor programming, potentially increasing offspring metabolic risk.
Background
Maternal obesity is linked to increased obesity risk in offspring, with prenatal exposure influencing adipose tissue development and metabolic outcomes. Mesenchymal stem cells from umbilical cords provide a unique model to study early developmental programming effects of maternal BMI on adipogenesis. Key transcription factors Pparg and Cebpa regulate adipocyte differentiation, and their expression reflects adipogenic capacity. Understanding how maternal BMI affects these pathways in UC-MSCs can elucidate mechanisms underlying offspring obesity predisposition.
Data Highlights
Parameter
NW-MSCs (Normal Weight)
OW/OB-MSCs (Overweight/Obese)
Maternal BMI (kg/m2)
22.2 ± 0.3
29.3 ± 0.6
Cebpa Protein Levels During Differentiation
Higher
Reduced
Pparg Protein Levels During Differentiation
Higher
Reduced
Maximal Mitochondrial Respiration
Trend Higher
Trend Lower
Spare Respiratory Capacity
Trend Higher
Trend Lower
Key Findings
UC-MSCs from infants of overweight/obese mothers show reduced protein expression of adipogenic regulators Cebpa and Pparg during differentiation.
OW/OB-MSCs exhibit diminished mitochondrial flexibility, with trends toward lower maximal respiration and spare respiratory capacity compared to NW-MSCs.
Associations between maternal BMI and adipogenic gene expression differ between OW/OB-MSCs and NW-MSCs, particularly by day 14 of differentiation.
Impaired adipogenic capacity and mitochondrial function in OW/OB-MSCs suggest disrupted programming of adipose precursors due to prenatal exposure to maternal obesity.
These cellular alterations may predispose offspring to metabolically compromised adipose tissue and increased obesity risk later in life.
Clinical Implications
These findings highlight the importance of maternal weight management before and during pregnancy to prevent early programming defects in offspring adipose tissue precursors. Monitoring and potentially targeting mitochondrial function and adipogenic pathways in at-risk infants could inform early interventions to mitigate future metabolic disease. UC-MSCs provide a valuable model for assessing prenatal influences on adipose tissue development.
Conclusion
Prenatal exposure to maternal obesity impairs the adipogenic differentiation capacity and mitochondrial bioenergetics of infant UC-MSCs, indicating early cellular programming alterations that may contribute to offspring metabolic dysfunction. Addressing maternal obesity is critical to improving long-term metabolic health outcomes in children.
References
GLOWING Study (2011-2014) -- Impact of Maternal Health on Offspring Growth and Obesity Risk
