Inhibition of Autoimmune Diabetes in NOD Mice by miRNA Therapy. 2015

Duncheng Wang, and Iryna Shanina, and Wendy M Toyofuku, and Marc S Horwitz, and Mark D Scott
Centre for Innovation, Canadian Blood Services, Ottawa, Ontario, Canada.

Autoimmune destruction of the pancreatic islets in Type 1 diabetes is mediated by both increased proinflammatory (Teff) and decreased regulatory (Treg) T lymphocytes resulting in a significant decrease in the Treg:Teff ratio. The non-obese diabetic (NOD) mouse is an excellent in vivo model for testing potential therapeutics for attenuating the decrease in the Treg:Teff ratio and inhibiting disease pathogenesis. Here we show for the first time that a bioreactor manufactured therapeutic consisting of a complex of miRNA species (denoted as TA1) can effectively reset the NOD immune system from a proinflammatory to a tolerogenic state thus preventing or delaying autoimmune diabetes. Treatment of NOD mice with TA1 resulted in a systemic broad-spectrum upregulation of tolerogenic T cell subsets with a parallel downregulation of Teff subsets yielding a dramatic increase in the Treg:Teff ratio. Moreover, the murine-derived TA1 was highly effective in the inhibition of allorecognition of HLA-disparate human PBMC. TA1 demonstrated dose-responsiveness and exhibited equivalent or better inhibition of allorecognition driven proliferation than etanercept (a soluble TNF receptor). These findings demonstrate that miRNA-based therapeutics can effectively attenuate or arrest autoimmune disease processes and may be of significant utility in a broad range of autoimmune diseases including Type 1 diabetes.

UI MeSH Term Description Entries
D003922 Diabetes Mellitus, Type 1 A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence. Diabetes Mellitus, Brittle,Diabetes Mellitus, Insulin-Dependent,Diabetes Mellitus, Juvenile-Onset,Diabetes Mellitus, Ketosis-Prone,Diabetes Mellitus, Sudden-Onset,Diabetes, Autoimmune,IDDM,Autoimmune Diabetes,Diabetes Mellitus, Insulin-Dependent, 1,Diabetes Mellitus, Type I,Insulin-Dependent Diabetes Mellitus 1,Juvenile-Onset Diabetes,Type 1 Diabetes,Type 1 Diabetes Mellitus,Brittle Diabetes Mellitus,Diabetes Mellitus, Insulin Dependent,Diabetes Mellitus, Juvenile Onset,Diabetes Mellitus, Ketosis Prone,Diabetes Mellitus, Sudden Onset,Diabetes, Juvenile-Onset,Diabetes, Type 1,Insulin Dependent Diabetes Mellitus 1,Insulin-Dependent Diabetes Mellitus,Juvenile Onset Diabetes,Juvenile-Onset Diabetes Mellitus,Ketosis-Prone Diabetes Mellitus,Sudden-Onset Diabetes Mellitus
D000067492 RNAi Therapeutics A form of disease treatment which involves the silencing of genes that are associated with a disease by the process of RNA INTERFERENCE. RNAi Therapeutic,RNAi Therapy,RNAi-Based Therapeutics,RNAi-Based Therapy,RNAi Based Therapy,RNAi Therapies,RNAi-Based Therapies,Therapeutic, RNAi,Therapeutics, RNAi,Therapies, RNAi,Therapies, RNAi-Based,Therapy, RNAi,Therapy, RNAi-Based
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D016688 Mice, Inbred NOD A strain of non-obese diabetic mice developed in Japan that has been widely studied as a model for T-cell-dependent autoimmune insulin-dependent diabetes mellitus in which insulitis is a major histopathologic feature, and in which genetic susceptibility is strongly MHC-linked. Non-Obese Diabetic Mice,Mice, NOD,Mouse, Inbred NOD,Mouse, NOD,Non-Obese Diabetic Mouse,Nonobese Diabetic Mice,Nonobese Diabetic Mouse,Diabetic Mice, Non-Obese,Diabetic Mice, Nonobese,Diabetic Mouse, Non-Obese,Diabetic Mouse, Nonobese,Inbred NOD Mice,Inbred NOD Mouse,Mice, Non-Obese Diabetic,Mice, Nonobese Diabetic,Mouse, Non-Obese Diabetic,Mouse, Nonobese Diabetic,NOD Mice,NOD Mice, Inbred,NOD Mouse,NOD Mouse, Inbred,Non Obese Diabetic Mice,Non Obese Diabetic Mouse
D050378 T-Lymphocytes, Regulatory CD4-positive T cells that inhibit immunopathology or autoimmune disease in vivo. They inhibit the immune response by influencing the activity of other cell types. Regulatory T-cells include naturally occurring CD4+CD25+ cells, IL-10 secreting Tr1 cells, and Th3 cells. Regulatory T Cell,Regulatory T-Cell,Regulatory T-Lymphocyte,Regulatory T-Lymphocytes,Suppressor T-Lymphocytes, Naturally-Occurring,T-Cells, Regulatory,Th3 Cells,Tr1 Cell,Treg Cell,Regulatory T-Cells,Suppressor T-Cells, Naturally-Occurring,Tr1 Cells,Treg Cells,Cell, Regulatory T,Cell, Th3,Cell, Tr1,Cell, Treg,Cells, Regulatory T,Cells, Th3,Cells, Tr1,Cells, Treg,Naturally-Occurring Suppressor T-Cell,Naturally-Occurring Suppressor T-Cells,Naturally-Occurring Suppressor T-Lymphocyte,Naturally-Occurring Suppressor T-Lymphocytes,Regulatory T Cells,Regulatory T Lymphocyte,Regulatory T Lymphocytes,Suppressor T Cells, Naturally Occurring,Suppressor T Lymphocytes, Naturally Occurring,Suppressor T-Cell, Naturally-Occurring,Suppressor T-Lymphocyte, Naturally-Occurring,T Cell, Regulatory,T Cells, Regulatory,T Lymphocytes, Regulatory,T-Cell, Naturally-Occurring Suppressor,T-Cells, Naturally-Occurring Suppressor,T-Lymphocyte, Regulatory,Th3 Cell
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

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