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Animal Bioresource in Japan

.: Home > Animal Bioresource in Japan > 2014 > Volume 63 Number 2 > Masato Fujii, Kenji Suzuki, Satoru Suenaga, Mariko Wakatsuki, Yoshihiro Kushida, Maki Touma, Masamichi Hosono

A Dominant Trait Linked to Chromosome 1 in DBA/2 Mice for the Resistance to Autoimmune Gastritis Appears in Bone Marrow Cells

Masato Fujii, Kenji Suzuki, Satoru Suenaga, Mariko Wakatsuki, Yoshihiro Kushida, Maki Touma, Masamichi Hosono
Laboratory of Immunobiology, Department of Life Sciences, Graduate School of Science and Technology, Niigata University, 8050 Ikarashi-2-no-cho, Nishi-ku, Niigata 950-2181, Japan
Abstract :

Neonatal thymectomy (NTx) induces autoimmune gastritis (AIG) in BALB/c mice, a model for human type A chronic atrophic gastritis, but not in DBA/2 mice and rarely in CDF1 mice (a hybrid of BALB/c and DBA/2 mice). The aim of this study was to clarify the mechanisms of AIG-resistance in mice bearing the dominant trait of DBA/2. Linkage groups associated with, and cells related to AIG resistance were examined with CDF1-BALB/c backcrosses. Intracellular staining and flow-cytometric bead array for several cytokines were performed on NTx BALB/c mice and NTx DBA/2-chimeric BALB/c mice receiving DBA/2-bone marrow cells. In NTx BALB/c mice, IFN-γ-secreting CD4+ T cells were increased, but not in NTx DBA/2 mice. Because Vβ6+ T cell-bearing mice of half of their backcrosses developed AIG, but the other half of Vβ6+ T cell-negative mice developed scarcely, resistance for AIG generation is associated with the presence of the Mls-1a locus on chromosome 1 in DBA/2 mice, which deletes Vβ6+ T cells. NTx DBA/2-chimera BALB/c mice showed dominant production of IL-10 and resistance for AIG, although the deletion of Vβ6+ T cells was found not to be a cause of AIG-resistance from Mls-1a locus segregation experiments. Although NTx DBA/2-chimeric BALB/c mice did not suffer from AIG, they brought immediate precursors of T cells for AIG. It is concluded that DBA/2 mice generate bone marrow-derived cells that produce anti-inflammatory cytokines to prevent the activation of AIG-T cells.

Keywords :
autoimmunity, gastritis, mouse, thymus

Date Deposited : 07 Apr 2015 10:00

Last Modified : 07 Apr 2015 10:00

Official URL: http://https://www.jstage.jst.go.jp/browse/expanim/62/1/_contents

Volume 63, Number 2, - 2014

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