Identification of an anergic BND cell–derived activated B cell population (BND2) in young-onset type 1 diabetes patients
| Autor: | Zachary C. Stensland, Christopher A. Magera, Hali Broncucia, Brittany D. Gomez, Nasha M. Rios-Guzman, Kristen L. Wells, Catherine A. Nicholas, Marynette Rihanek, Maya J. Hunter, Kevin P. Toole, Peter A. Gottlieb, Mia J. Smith |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Experimental Medicine. 220 |
| ISSN: | 1540-9538 0022-1007 |
| Popis: | Recent evidence suggests a role for B cells in the pathogenesis of young-onset type 1 diabetes (T1D), wherein rapid progression occurs. However, little is known regarding the specificity, phenotype, and function of B cells in young-onset T1D. We performed a cross-sectional analysis comparing insulin-reactive to tetanus-reactive B cells in the blood of T1D and controls using mass cytometry. Unsupervised clustering revealed the existence of a highly activated B cell subset we term BND2 that falls within the previously defined anergic BND subset. We found a specific increase in the frequency of insulin-reactive BND2 cells in the blood of young-onset T1D donors, which was further enriched in the pancreatic lymph nodes of T1D donors. The frequency of insulin-binding BND2 cells correlated with anti-insulin autoantibody levels. We demonstrate BND2 cells are pre-plasma cells and can likely act as APCs to T cells. These findings identify an antigen-specific B cell subset that may play a role in the rapid progression of young-onset T1D. |
| Databáze: | OpenAIRE |
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