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Racine, JJ; Misherghi, A; Dwyer, JR; Maser, R; Forte, E; Bedard, O; Sattler, S; Pugliese, A; Landry, L; Elso, C; Nakayama, M; Mannering, S; Rosenthal, N; Serreze, DV.
HLA-DQ8 Supports Development of Insulitis Mediated by Insulin-Reactive Human TCR-Transgenic T Cells in Nonobese Diabetic Mice.
J Immunol. 2023; 211(12):1792-1805
Doi: 10.4049/jimmunol.2300303
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- Co-authors Med Uni Graz
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Sattler Susanne
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- Abstract:
- In an effort to improve HLA-"humanized" mouse models for type 1 diabetes (T1D) therapy development, we previously generated directly in the NOD strain CRISPR/Cas9-mediated deletions of various combinations of murine MHC genes. These new models improved upon previously available platforms by retaining β2-microglobulin functionality in FcRn and nonclassical MHC class I formation. As proof of concept, we generated H2-Db/H2-Kd double knockout NOD mice expressing human HLA-A*0201 or HLA-B*3906 class I variants that both supported autoreactive diabetogenic CD8+ T cell responses. In this follow-up work, we now describe the creation of 10 new NOD-based mouse models expressing various combinations of HLA genes with and without chimeric transgenic human TCRs reactive to proinsulin/insulin. The new TCR-transgenic models develop differing levels of insulitis mediated by HLA-DQ8-restricted insulin-reactive T cells. Additionally, these transgenic T cells can transfer insulitis to newly developed NSG mice lacking classical murine MHC molecules, but expressing HLA-DQ8. These new models can be used to test potential therapeutics for a possible capacity to reduce islet infiltration or change the phenotype of T cells expressing type 1 diabetes patient-derived β cell autoantigen-specific TCRs.
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Humans - administration & dosage
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Mice - administration & dosage
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Animals - administration & dosage
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Mice, Inbred NOD - administration & dosage
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Diabetes Mellitus, Type 1 - genetics, therapy
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Insulin - administration & dosage
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Mice, Transgenic - administration & dosage
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Diabetes Mellitus, Experimental - administration & dosage
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Mice, Knockout - administration & dosage
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Receptors, Antigen, T-Cell - genetics
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HLA-DQ Antigens - administration & dosage