β Cells that Resist Immunological Attack Develop during Progression of Autoimmune Diabetes in NOD Mice

Publication date: Available online 9 February 2017
Source:Cell Metabolism
Author(s): Jinxiu Rui, Songyan Deng, Arnon Arazi, Ana Luisa Perdigoto, Zongzhi Liu, Kevan C. Herold
Type 1 diabetes (T1D) is a chronic autoimmune disease that involves immune-mediated destruction of β cells. How β cells respond to immune attack is unknown. We identified a population of β cells during the progression of T1D in non-obese diabetic (NOD) mice that survives immune attack. This population develops from normal β cells confronted with islet infiltrates. Pathways involving cell movement, growth and proliferation, immune responses, and cell death and survival are activated in these cells. There is reduced expression of β cell identity genes and diabetes antigens and increased immune inhibitory markers and stemness genes. This new subpopulation is resistant to killing when diabetes is precipitated with cyclophosphamide. Human β cells show similar changes when cultured with immune cells. These changes may account for the chronicity of the disease and the long-term survival of β cells in some patients.

Graphical abstract

Teaser

Type 1 diabetes (T1D) is due to the immune-mediated destruction of β cells. Rui et al. identify a population of β cells that survives immune attack during T1D progression in non-obese diabetic mice, which may account for the long-term survival of some β cells in patients.


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