STAT5-c-Myc-axis regulates the difference of B cell metabolism between
vaccinated population and recovered COVID-19 patients
Abstract
Both SARS-CoV-2 infection and vaccination can elicit immune responses.
The former is naturally acquired immunity, while the latter is active
artificially acquired immunity. However, the different effects of
SARS-CoV-2 infection and vaccination on the immune response and the
underlying mechanisms are still unclear. Here, we found although there
is no significant difference in peripheral B cell differentiation
between the vaccinated and the recovered group, the vaccinated group has
higher signal intensity of CD86 and HLA-DR in CD19+RBD+ B cells and has
stronger BCR signal of B cells. For metabolic signal, the vaccinated
group has higher expression of pmTOR, pS6, c-Myc and pSTAT5, which
indicates the STAT5-c-Myc axis regulates B cell metabolism. We found
serum of vaccinated group has higher level of IgG antibodies specific to
SARS-CoV-2 N-Nter protein and IgA antibodies specific to SARS-CoV-2 S1
protein by using proteome microarray. In conclusion, these results show
that the vaccinated group has a stronger coronavirus specific immune
response and higher metabolism signal than the recovered group, which
provides strategies for vaccine design of SARS-CoV-2.