PKC activation promotes maturation of cord blood T cells towards a Th1 IFN-γ propensity

A significant number of babies present transiently with low protein kinase C zeta (PKCζ) levels in cord blood T cells, associated with reduced ability to transition from a neonatal Th2 to a mature Th1 cytokine bias, leading to a higher risk of developing allergic sensitisation, compared to neonates whose T cells have 'normal' PKCζ levels. However, the importance of PKCζ signalling in regulating their differentiation from a Th2 to a Th1 cytokine phenotype propensity remains undefined.

Citation:
Perveen K, Quach A, Stark MJ, Prescott S, et al. PKCζ activation promotes maturation of cord blood T cells towards a Th1 IFN-γ propensity. Immunology. 2023

Keywords:
CD4+ and CD8+ T cells; PKC isozymes; PKCζ; T cell maturation; Th1 and Th2 subsets; allergy; cord blood T cells; cytokines; neonate

Abstract:
A significant number of babies present transiently with low protein kinase C zeta (PKCζ) levels in cord blood T cells, associated with reduced ability to transition from a neonatal Th2 to a mature Th1 cytokine bias, leading to a higher risk of developing allergic sensitisation, compared to neonates whose T cells have 'normal' PKCζ levels. However, the importance of PKCζ signalling in regulating their differentiation from a Th2 to a Th1 cytokine phenotype propensity remains undefined.