Article ; Online: Macrophage-derived insulin-like growth factor-1 affects influenza vaccine efficacy through the regulation of immune cell homeostasis.
2017 Volume 35, Issue 36, Page(s) 4687–4694
Abstract: ... of these, insulin-like growth factor-1 (IGF-1), plays an important role in lymphocyte maturation and antibody expression. Here ... we investigated the role of macrophage-derived IGF-1 in the induction of influenza vaccine-specific antibodies ... using macrophage-derived IGF-1 gene knockout (MIKO) mice. The titers of vaccine-specific total ...
| Abstract | The level of antibody production induced by a vaccine involves a variety of host factors. One of these, insulin-like growth factor-1 (IGF-1), plays an important role in lymphocyte maturation and antibody expression. Here, we investigated the role of macrophage-derived IGF-1 in the induction of influenza vaccine-specific antibodies using macrophage-derived IGF-1 gene knockout (MIKO) mice. The titers of vaccine-specific total immunoglobulin G (IgG) and IgG1 after immunization were about two- to fourfold lower in MIKO mice than in WT mice. Moreover, MIKO mice showed a relatively weak booster effect of repeated immunization. In contrast, antigen-nonspecific total IgG was about threefold higher in MIKO mice than in WT mice. After viral challenge, the viral titer and the pathological damage in lungs of MIKO mice were higher than those in WT mice despite vaccination. Interestingly, the proportions of proinflammatory immune cells including M1 macrophages, Th1 and Th17 cells was higher in unvaccinated MIKO mice than in unvaccinated WT mice. This suggests that nonspecific activation of immune cells may paradoxically impair the response to the vaccine. In addition, although the proportions of T follicular helper (Tfh) cells and GL-7 |
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| Language | English |
| Publishing date | 2017-08-24 |
| Publishing country | Netherlands |
| Document type | Journal Article |
| ZDB-ID | 605674-x |
| ISSN | 1873-2518 ; 0264-410X |
| ISSN (online) | 1873-2518 |
| ISSN | 0264-410X |
| DOI | 10.1016/j.vaccine.2017.07.037 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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