AID Deficiency Leads to Autoimmune Gastritis in Mice
Author Information
Author(s): Hase Koji, Takahashi Daisuke, Ebisawa Masashi, Kawano Sayaka, Itoh Kikuji, Ohno Hiroshi
Primary Institution: Research Center for Allergy and Immunology, RIKEN, Yokohama, Kanagawa, Japan
Hypothesis
AID deficiency causes organ-specific autoimmune diseases through abnormal B-cell expansion.
Conclusion
AID deficiency in mice leads to the development of autoimmune gastritis characterized by T-cell activation and B-cell autoimmunity.
Supporting Evidence
- AID−/− mice developed tertiary lymphoid organs in non-lymphoid tissues including the stomach.
- Gastritis in AID−/− mice was characterized by loss of gastric glands and epithelial hyperplasia.
- Elevated serum IgM levels correlated with gastritis severity in AID−/− mice.
- Adoptive transfer of CD4+ T cells from AID−/− mice induced gastritis in recipient mice.
- Proinflammatory cytokines were upregulated in the gastric tissue of AID−/− mice.
- Gastritis development occurred even under germ-free conditions, indicating a non-microflora related mechanism.
Takeaway
Mice without a specific immune protein called AID get sick in their stomachs because their immune system goes out of control and attacks their own body.
Methodology
The study involved analyzing AID−/− mice for the development of gastritis and TLOs, along with adoptive transfer experiments to assess T-cell involvement.
Potential Biases
Potential bias in interpreting results due to the use of a single mouse model.
Limitations
The study primarily focused on AID−/− mice, which may not fully represent the complexity of autoimmune diseases in humans.
Participant Demographics
AID−/− mice, aged 5-12 months.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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