THE EXPERIMENTAL MODEL OF AUTOIMMUNE PROCESS: THE ROLE OF EPIGENETIC VARIATION IN THE POPULATION OF MICE HYBRIDS

O. P. Kolesnikova; Колесникова О. П.; O. T. Kudaeva; Кудаева О. Т.; N. N. Vol'skii; Вольский Н. Н.; E. V. Goiman; Гойман Е. В.; E. D. Gavrilova; Гаврилова Е. Д.; O. M. Perminova; Перминова О. М.; E. N. Demchenko; Демченко Е. Н.; V. A. Kozlov; Козлов В. А.

doi:10.15690/vramn.v70i2.1307

THE EXPERIMENTAL MODEL OF AUTOIMMUNE PROCESS: THE ROLE OF EPIGENETIC VARIATION IN THE POPULATION OF MICE HYBRIDS

Authors: Kolesnikova O.P.¹, Kudaeva O.T.¹, Vol'skii N.N.¹, Goiman E.V.¹, Gavrilova E.D.¹, Perminova O.M.¹, Demchenko E.N.¹, Kozlov V.A.¹
Affiliations:
1. Research Institute of Fundamental and Clinical Immunology, Novosibirsk, Russian Federation
Issue: Vol 70, No 2 (2015)
Pages: 152-158
Section: PROCEEDINGS of the GENERAL MEETING of the Department of Medical Sciences, RAS
URL: https://vestnikramn.spr-journal.ru/jour/article/view/50
DOI: https://doi.org/10.15690/vramn.v70i2.1307

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Abstract

Background: At the development of graft versus host disease in genetically homogeneous population of (C57Bl/6 x DBA/2) F1 mice two clinical phenotypes of SLE-like disease were revealed: lupus+ (immune complex glomerulonephritis and hemolytic anemia) and lupus – (hemolytic anemia). The GvHD phenotypic heterogeneity is determined by the Th1 /Th2-polarization: Th2 lymphocyte predominant activity, leads to the lupus+ development, or prevalence activity of Th1 cells, leads to the lupus– development. Objective: Our aim was to evaluate the possibility of using an experimental model of autoimmune disease for studying and testing of epigenetic modifications, shifting Th1 /Th2-
balance in vivo. Methods: Сhronic GVHD was induced in B6D2F1 mice by the transplantation of 130×10 6 parental DBA/2 splenocytes. Аnti-ds-DNA, total IgG and IgG1, IgG2а Abs were measured by ELISA. Results: Six- to 8-week-old female DBA/2 and B6D2F1 mice were obtained from Biological Research Laboratory (Novosibirsk). It was established that regular moderate physical activity (unladed swimming) shifted Th1 /Th2 balance towards Th1. This leads to a decrease in a population of recipients the lupus+ mice from 57 to 26% (p <0,001) with significantly reduced hypergammaglobulinemia (IgG from 2,8 to 2,0 mg/ml; p <0,047) and DNA antibodies titer from 0,18 to 0,12 OD (p =0,05). Administration of epigenetic modificator bisphenol A at low doses, which mimicking estrogen effects, enhances the proportion of lupus+ mice in experimental groups from 33 to 64% (p <0,001) and impairs their clinical status by the increasing the urine protein level from 2.8 to 4,2 mg/ml (p <0,001) in animals. Conclusion: Th1 /Th2 – balance presumably is determined by the immune system epigenetic modification in experimental mice, formed on the previous stages of ontogeny and defines the direction of immune processes development in individual animal.