Gevorgyan MM, Zhanaeva SY, Alperina EL, Lipina TV, Idova GV. The composition of peripheral immunocompetent cell subpopulations and cytokine content in the brain structures of mutant Disc1-Q31L mice.
Vavilovskii Zhurnal Genet Selektsii 2020;
24:770-776. [PMID:
33959693 PMCID:
PMC8093651 DOI:
10.18699/vj20.672]
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Abstract
The DISC1 (disrupted in sсhizophrenia 1) gene is associated with brain dysfunctions, which are involved
in a variety of mental disorders, such as schizophrenia, depression and bipolar disorder. This is the first study to
examine the immune parameters in Disc1-Q31L mice with a point mutation in the second exon of the DISC1 gene
compared to mice of the C57BL/6NCrl strain (WT, wild type). A flow cytometry assay has shown that intact Disc1-
Q31L mice differ from the WT strain by an increase in the percentage of CD3+ T cells, CD3+CD4+ Т helper cells
and CD3+CD4+CD25+ T regulatory cells and a decrease in CD3+CD8+ T cytotoxic/suppressor cells in the peripheral
blood. A multiplex analysis revealed differences in the content of cytokines in the brain structures of Disc1-Q31L
mice compared to WT mice. The content of pro-inflammatory cytokines was increased in the frontal cortex (IL-6,
IL- 17 and IFNγ) and striatum (IFNγ), and decreased in the hippocampus and hypothalamus. At the same time, the
levels of IL-1β were decreased in all structures being examined. In addition, the content of anti-inflammatory cytokines
IL-4 was increased in the frontal cortex, while IL-10 amount was decreased in the hippocampus. Immune
response to sheep red blood cells analyzed by the number of antibody-forming cells in the spleen was higher in
Disc1-Q31L mice at the peak of the reaction than in WT mice. Thus, Disc1-Q31L mice are characterized by changes in
the pattern of cytokines in the brain structures, an amplification of the peripheral T-cell link with an increase in the
content of the subpopulations of CD3+CD4+ T helpers and CD3+CD4+CD25+ T regulatory cells, as well as elevated
immune reactivity to antigen in the spleen.
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