Trained immunity in newborn infants of HBV 黄清霞

3.HBV exposure in utero induces robust Th1-polarized response
3.HBV exposure in utero induces rຫໍສະໝຸດ Baidubust Th1-polarized response
3.HBV exposure in utero induces robust Th1-polarized response
Introduction
so

neonatal immune system is not defective. Instead, it presents unique functional features and the functional maturation of neonatal immunity can be modulated by external factors.
6.HBV-induced immune maturation is associated with HBsAg
7.IL-12p40 and IFN- a2 induce CB immune cell maturation
7.IL-12p40 and IFN- a2 induce CB immune cell maturation

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1.Cytokine profile in HBV-exposed CB
This shift in Th1 cytokine balance was also observed in the independent cohort of CB samples from neonates of Caucasian HBV+mothers
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HBV exposure in utero triggers a state of trained immunity, characterized by innate immune cell maturation and Th1 development, which in turn enhances the ability of cord blood immune cells to respond to bacterial infection in vitro.
method

comprehensive immunological analysis of the cord blood cells from neonates of HBV chronically infected mothers.
Results
1.Cytokine profile in HBV-exposed CB. 2.HBV exposure in utero enhances innate immune activation. 3.HBV exposure in utero induces robust Th1-polarized response. 4.HBV exposure in utero triggers a state of trained immunity. 5.HBV-induced immunological changes are neonatal in origin. 6.HBV-induced immune maturation is associated with HBsAg 7.IL-12p40 and IFN- a2 induce CB immune cell maturation.
2.HBV exposure in utero enhances innate immune activation
2.HBV exposure in utero enhances innate immune activation
2,HBV exposure in utero enhances innate immune activation
What is immune tolerance?
Introduction

HBV is viewed as the prototypical pathogen that is thought to hijack the immaturity of the neonatal immune system and to establish a persistent infection through the induction of an ‘immunotolerant state’ in the host.
4.HBV exposure in utero triggers a state of trained immunity
5.HBV-induced immunological changes are neonatal in origin
5.HBV-induced immunological changes are neonatal in origin
Trained immunity in newborn infants of HBV-infected mothers
汇报人：黄清霞 2013级临床医学系 2015年4月26日
Introduction
1. Hepatitis B virus
2. MTCT
What is HBV ?
a state of specific unresponsiveness
(c) The activation phenotypes of T cells and monocytes in CB cells ( n ¼ 2,denoted 1 and 2) stimulated with physiological concentrations of rhIL-12p40 (0.1 ng ml 1) and rhIFN- a2 (0.4 ng ml 1).
These results demonstrate that the immunological changes observed in HBV-exposed CB is unlikely to be due to an increase in maternal cell contamination, but probably due to genuine maturation of the neonatal immune cells.