
06/05/2025
Interesting ready for expecting moms 🌸
A recent study in Nature Metabolism highlights how maternal exercise during pregnancy can improve offspring metabolic health through a mechanism involving the adipokine SERPINA3C. These findings provide valuable insights into how early-life metabolic programming occurs and may offer new approaches for preventing obesity and metabolic disorders.
The research shows that maternal physical activity increases SERPINA3C production in white adipose tissue (WAT), which is then transferred into fetal circulation. Once in the fetus, this protein influences fat cell development by enhancing expression of Kruppel-like factor 4 (KLF4), a transcription factor that regulates inflammation and metabolic balance. By increasing KLF4 levels, maternal exercise protects offspring from diet-induced obesity, insulin resistance, and chronic inflammation, even when they are later exposed to a high-fat diet (HFD).
To confirm the role of SERPINA3C, researchers conducted both knockdown and overexpression experiments. When maternal SERPINA3C was reduced, offspring exhibited higher fat accumulation, increased adipose inflammation, and impaired glucose metabolism. Conversely, artificially increasing SERPINA3C levels in maternal WAT replicated the metabolic benefits of maternal exercise in offspring, even in the absence of physical activity.
SERPINA3C activates the cathepsin G-integrin β1-PI3K pathway, which triggers epigenetic modifications in fetal fat cells. It promotes the removal of methyl groups from the Klf4 gene, sustaining its expression and preventing adipose inflammation.
These findings highlight the influence of maternal health on offspring well-being. Engaging in regular physical activity during pregnancy not only benefits the mother but can also provide lasting metabolic advantages for her child. Understanding these mechanisms could also inform early-life interventions aimed at reducing the risk of obesity, diabetes, and other metabolic diseases. As research continues to uncover the biological pathways connecting maternal lifestyle to offspring health, there is more potential for strategies that center upon metabolic health.
Read the study here: https://www.nature.com/articles/s42255-024-01213-6