Early Immune Response to BCG Vaccination in Mice
Author Information
Author(s): Liya G. Kondratyeva, Olga A. Rakitina, Victor V. Pleshkan, Alexey I. Kuzmich, Irina A. Linge, Sofia A. Kondratieva, Eugene V. Snezhkov, Irina V. Alekseenko, Eugene D. Sverdlov
Primary Institution: Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
Hypothesis
Local BCG immunization may induce an early immune response in bone marrow and spleen innate immunity cells.
Conclusion
BCG vaccination leads to an early increase in the proportion of murine bone marrow and spleen immune cell populations, along with transcriptomic changes in monocytes and NK cells.
Supporting Evidence
- BCG vaccination increases splenic NK cells and monocytes three days post-vaccination.
- Transcriptomic analysis shows changes in immune response-related genes in NK cells and monocytes.
- No significant changes were observed in neutrophils at the transcriptomic level.
- Two NK cell-specific immune ligands and two bone marrow-specific immune receptors were identified.
- Early immune responses may enhance trained immunity.
Takeaway
When mice get a BCG vaccine, their immune cells in the bone marrow and spleen start to change and grow in number just a few days later.
Methodology
C57Bl/6J mice were vaccinated with BCG, and immune cell populations were analyzed using FACS and RNA sequencing three days post-vaccination.
Limitations
The study primarily focuses on early immune responses and does not assess long-term effects or responses in other immune cell types.
Participant Demographics
C57Bl/6J mice, female, 6–8 weeks old.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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