A Model to Explain How the Bacille Calmette Guérin (BCG) Vaccine Drives Interleukin-12 Production in Neonates.
A Model to Explain How the Bacille Calmette Guérin (BCG) Vaccine Drives Interleukin-12 Production in Neonates.
复制标题
DOI:
10.1371/journal.pone.0162148
复制
发表时间:
2016
期刊:
影响因子:
3.7
通讯作者:
Libraty DH
中科院分区:
文献类型:
--
作者:
Kativhu CL;Libraty DH
The Bacille Calmette Guérin (BCG) vaccine is the only routine vaccination at birth that effectively induces neonatal T-helper 1 (Th1)-polarized immune responses. The primary cytokine that drives CD4+ T-cell Th1 differentiation is interleukin (IL)-12 p70, a heterodimeric cytokine composed of the IL-12 p35 and IL-12 p40 subunits. We therefore examined the mechanisms involved in BCG vaccine stimulation of IL-12 p35 and p40 production from human umbilical cord (neonatal) cells. We found that BCG bacilli did not upregulate IL-12 p35 mRNA production, but upregulated IL-12 p40 mRNA production in a Toll-like receptor (TLR)2-dependent manner, in human neonatal monocyte-derived dendritic cells (mdDCs). The combination of TLR2 signaling, Type I interferon (IFN), and Type II IFN induced maximal levels of IL-12 p35 and p40 mRNA production in human neonatal mdDCs. The cell-free supernatants of reconstituted BCG vaccine vials contained extracellular mycobacterial (BCG) DNA which could induce IFN-α (Type I IFN) production in human neonatal plasmacytoid dendritic cells (pDCs). BCG bacilli also stimulated human neonatal CD16lo natural killer (NK) cells to produce IFN-γ (Type II IFN) in a TLR2-dependent manner. We have therefore proposed a model where BCG vaccine could stimulate the combination of neonatal conventional DCs (cDCs), pDCs, and CD16lo NK cells to produce optimal neonatal IL-12 p35 and p40 (IL-12 p70) production and subsequent CD4+ T-cell Th1 polarization. An adjuvant that emulates the mechanism by which the BCG vaccine stimulates neonatal IL-12 p35 and p40 production could improve vaccine strategies at birth for protection against intracellular pathogens and toxins.
登录
查看更多内容
DOI:
10.4049/jimmunol.0901481
发表时间:
2009-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Kollmann TR;Crabtree J;Rein-Weston A;Blimkie D;Thommai F;Wang XY;Lavoie PM;Furlong J;Fortuno ES 3rd;Hajjar AM;Hawkins NR;Self SG;Wilson CB
通讯作者:
Wilson CB
影响因子:
4.4
作者:
Pecora, Nicole D.;Gehring, Adam J.;Harding, Clifford V.
通讯作者:
Harding, Clifford V.
影响因子:
4.3
作者:
Lauzon, Nicole M.;Mian, Firoz;Ashkar, Ali A.
通讯作者:
Ashkar, Ali A.
影响因子:
56.9
作者:
Brightbill, HD;Libraty, DH;Modlin, RL
通讯作者:
Modlin, RL
影响因子:
4.4
作者:
Basha S;Surendran N;Pichichero M
通讯作者:
Pichichero M