Detection and quantification of miRNA 148a expression in infant formulas

Area of Science:

• Biochemistry
• Molecular Biology
• Pediatrics

Background:

• MicroRNAs (miRNAs) play crucial roles in biological processes like immunity and cell differentiation.
• miRNA 148a is abundant in human breast milk and is found in exosomal compounds.
• Infant formulas are essential for infants unable to receive breast milk.

Purpose of the Study:

• To quantify miRNA 148a levels in various infant formulas.
• To compare miRNA 148a expression across different formula types and with or without probiotics.
• To investigate the correlation between protein levels and miRNA 148a expression in probiotic formulas.

Main Methods:

• Analysis of 20 infant formulas (stages 1, 2, 3, and premature).
• Quantitative Polymerase Chain Reaction (qPCR) for miRNA 148a gene expression analysis.
• Statistical analysis with significance set at p < 0.05.

Main Results:

• No statistically significant difference in miRNA 148a expression was found across different infant formulas (p > 0.05).
• No difference in miRNA 148a expression was observed between formulas with and without probiotics (p > 0.05).
• A positive correlation was found between protein levels and relative miRNA 148a expression in probiotic formulas (p = 0.022).

Conclusions:

• miRNA 148a is detectable in infant formulas, but at significantly lower levels than in breast milk.
• Current infant formulas may not fully replicate the miRNA content of breast milk.
• Further research is recommended to understand miRNA functions in breast milk and improve infant formula composition.