Journal
MOLECULAR IMMUNOLOGY
Volume 134, Issue -, Pages 129-140Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.molimm.2021.03.007
Keywords
Sepsis; Neonates; mDCs; BTLA
Categories
Funding
- Science and Technology Project of Zhongshan [2015B1076, 2019B1056]
- Medical Research Funding of Guangdong [A2019286]
- Health Project of Zhongshan [2019J274]
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The study revealed that in neonatal sepsis, the expression of BTLA in mDCs is elevated and positively correlated with the severity of sepsis. The presence of BTLA leads to decreased phagocytosis and bactericidal ability in mDCs, as well as a shift towards an anti-inflammatory phenotype.
Dentritic cells (DCs) dysfunction has been verified detrimental for sepsis and B and T lymphocyte attenuator (BTLA) is an immune-regulatory receptor shown to be associated with DCs dysfunction. However, the role of BTLA expression in myeloid DCs (mDCs) in neonatal sepsis is unknown. In the current study, we found BTLA-expressing mDCs were elevated in neonates with sepsis and the BTLA expression level in mDCs was positively correlated to the severity of sepsis. The presence of BTLA negatively regulated the phagocytosis capacity and bactericidal ability of mDCs as well as the maturation markers expression of mDCs. Our data also showed BTLA(+)mDCs shifted into an anti-inflammatory phenotype with decreased expression of IL-6, TNF-alpha and IL-12, but increased IL-10. in addition, we found BTLA expression indeedly altered the mDCs allo-stimulatory capacity. Therefore, BTLA expression in mDCs could be a useful predictive marker for neonatal sepsis and targeting BTLA expression in mDCs may be a new therapeutic strategy.
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