Characterization of Exosomal MicroRNAs in Preterm Infants Fed with Breast Milk and Infant Formula

Overview

Journal Front Nutr

Specialty Nutritional Sciences

Date 2024 Feb 2

PMID 38304545

Authors

Eun-Bit Kim

Jun Hwan Song

Linh Nguy-Hoang Le

Ho Kim

Ji Won Koh

Yekyeng Seo

Hwal Rim Jeong

Hyun-Taek Kim

Seongho Ryu

Affiliations

Soon will be listed here.

Abstract

Breastfeeding not only reduces infection-related morbidity, but also increases growth of preterm infants. Advantages of breast milk (BM) for preterm infants are significant. They continue to be studied. However, because not all preterm infants can receive breastfeeding, bovine-based infant formula (IF) is used as an alternative, which may increase the risk of several preterm complications. Exosomes isolated from biofluids are emerging as biomarkers in research of various diseases. Here, we characterized miRNA contents of exosomes in urine and serum samples of preterm infants who were BM and IF fed and performed transcriptomic analysis of small RNA libraries. We identified significantly up-regulated 6 miRNAs and 10 miRNAs, respectively. Gene Ontology (GO) analysis revealed that target genes of these miRNAs might participate in neuronal development, immunity modulation, detoxification of reactive oxygen species, and transmembrane exchange. Our data suggest that exosome-based systemic screening for preterm infants with breastfeeding might be a screening tool for identifying target molecules involved in therapy for preterm infants in neonatal intensive care unit (NICU) and for future application as nutraceutical formulations or pharmaceuticals.

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