Age-dependent Transcriptomic Profiles of Leukocytes in Pediatric Population

Overview

Journal Clin Immunol

Specialty Allergy & Immunology

Date 2023 Aug 10

PMID 37562722

Authors

Sophia Koutsogiannaki

Samuel Kim

Koichi Yuki

Affiliations

Soon will be listed here.

Abstract

Immunity at birth is considered immature. Following birth, our immune function is considered to grow and reach maturation over time. To obtain granular information of leukocyte functions and transcriptomic profiles in pediatric cohort, we examined leukocyte profiles in infants, preschool and school children using single cell RNA sequencing of their peripheral blood mononuclear cells (PBMCs). Monocytes and natural killer (NK) cells showed immaturity in infants. Their innate and adaptive immunity was developed by preschool age. Adaptive immune cells showed different maturation patterns. CD4, CD8 naïve T cells and plasma cells continued to mature untill school age. In CD8 naïve T cells, innate immunity was upregulated in infants, in support of our knowledge that they manifests more innate cell-like phenotype soon after birth. Many signaling pathways have been differentially up- and/or down-regulated in infants, preschool and school children. Their contribution to the development of the immune system needs to be delineated.

Citing Articles

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