Title:Metabolic Reprogramming of Immune Cells Following Vaccination:
From Metabolites to Personalized Vaccinology
Volume: 31
Issue: 9
Author(s): Michele Mussap*, Melania Puddu and Vassilios Fanos
Affiliation:
- Department of Surgical Sciences, School of Medicine, University of Cagliari, Cittadella Universitaria S.S. 554, Monserrato 09042, Cagliari, Italy
Keywords:
Metabolomics, vaccines, metabolic reprogramming, trained immunity, system vaccinology, immune cells.
Abstract: Identifying metabolic signatures induced by the immune response to vaccines
allows one to discriminate vaccinated from non-vaccinated subjects and decipher the
molecular mechanisms associated with the host immune response. This review illustrates
and discusses the results of metabolomics-based studies on the innate and adaptive immune
response to vaccines, long-term functional reprogramming (immune memory), and
adverse reactions. Glycolysis is not overexpressed by vaccines, suggesting that the immune
cell response to vaccinations does not require rapid energy availability as necessary
during an infection. Vaccines strongly impact lipids metabolism, including saturated
or unsaturated fatty acids, inositol phosphate, and cholesterol. Cholesterol is strategic for
synthesizing 25-hydroxycholesterol in activated macrophages and dendritic cells and stimulates
the conversion of macrophages and T cells in M2 macrophage and Treg, respectively.
In conclusion, the large-scale application of metabolomics enables the identification
of candidate predictive biomarkers of vaccine efficacy/tolerability.