Neonatal intake of Omega-3 fatty acids enhances lipid oxidation in adipocyte precursors

Area of Science:

• Biochemistry
• Developmental Biology
• Metabolic Health

Background:

• Metabolic programming originates during fetal and postnatal development.
• Early-life lipid exposure significantly influences neonatal adipogenesis (fat cell formation).
• The ratio of omega-6 to omega-3 fatty acids (n6/n3 FA ratio) is a critical nutritional factor.

Purpose of the Study:

• To investigate how a low n6/n3 FA ratio impacts fatty acid oxidation in adipocyte precursor cells (APCs).
• To determine the molecular mechanisms by which early-life lipid nutrition influences beige adipogenesis.
• To establish the clinical relevance of early-life nutrition for metabolic health.

Main Methods:

• In vivo studies using mouse pups exposed to varying n6/n3 FA ratios.
• Isolation and analysis of adipocyte precursor cells (APCs).
• In vitro treatment of APCs with NR2F2 ligands.
• Single-cell RNA-sequencing analysis of APCs.

Main Results:

• Neonatal exposure to a low n6/n3 FA ratio resulted in APCs with superior fatty acid oxidation capacity.
• APCs from pups on a low n6/n3 FA diet showed elevated expression of beige adipocyte markers (Ppargc1α, Ucp2, Runx1) and increased NR2F2 protein.
• In vitro studies demonstrated that NR2F2 ligand treatment induced beige adipocyte gene expression and increased mitochondrial potential in APCs.
• Single-cell RNA-sequencing revealed that a low n6/n3 FA ratio promotes a higher proportion of mitochondrial-rich APCs, linking NR2F2 levels to beige adipocyte characteristics and fatty acid oxidation.

Conclusions:

• Neonatal consumption of a low n6/n3 FA ratio establishes enhanced fatty acid oxidation in APCs.
• The nuclear receptor NR2F2 plays a key role in mediating the effects of lipid nutrition on beige adipogenesis.
• Establishing beige adipogenesis through early-life nutrition is clinically relevant for improving metabolism and preventing metabolic dysfunction.