Streptococcus agalactiae and Escherichia coli Induce Distinct Effector γδ T Cell Responses During Neonatal Sepsis.
Streptococcus agalactiae and Escherichia coli Induce Distinct Effector γδ T Cell Responses During Neonatal Sepsis.
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无乳链球菌和大肠杆菌在新生儿败血症期间诱导不同的效应γT细胞反应。
DOI:
10.1101/2023.10.02.560561
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发表时间:
2024
期刊:
影响因子:
--
通讯作者:
Knoop,KathrynA
中科院分区:
文献类型:
--
作者:
Witt,LilaT;Greenfield,KaraG;Knoop,KathrynA
Neonates born prematurely are vulnerable to life-threatening conditions such as bacterial sepsis.Streptococcus agalactiae(GBS) andEscherichia coliare frequent causative pathogens of neonatal sepsis, however, it remains unclear if these pathogens induce differential immune responses. We find that γδ T cells rapidly respond to single-organism GBS andE. colibloodstream infections in neonatal mice. Furthermore, GBS andE. coliinduce distinct cytokine production from IFN-γ and IL-17 producing γδ T cells, respectively. We also find that IL-17 production duringE. coliinfection is driven by γδTCR signaling, whereas IFN-γ production during GBS infection occurs independently of γδTCR signaling. The divergent effector responses of γδ T cells during GBS andE. coliinfections impart distinctive neuroinflammatory phenotypes on the neonatal brain. Thus, the neonatal adaptive immune system differentially responds to distinct bacterial stimuli, resulting in unique neuroinflammatory phenotypes.
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