Central role for marginal zone B cells in an animal model of Sjogren's syndrome

Publication date: Available online 30 April 2016
Source:Clinical Immunology
Author(s): Long Shen, Chun Gao, Lakshmanan Suresh, Zhenhua Xian, Nannan Song, Lee D. Chaves, Meixing Yu, Julian L. Ambrus
Patients with Sjogren's syndrome (SS) have been shown to have abnormal B cell function and increased numbers of marginal zone B cells (MZB and MZB precursors. The current studies utilized the Interleukin 14 alpha transgenic mouse model (IL14aTG) for SS to investigate the roles of marginal zone B cells (MZB) of the innate immune system in the pathophysiology of the disease. Eliminating MZB from IL14aTG mice by B cell specific deletion of RBP-J resulted in complete elimination of all disease manifestations of SS. Mice had normal salivary gland secretions, negative autoantibodies and normal histology of the salivary and lacrimal glands compared to IL14aTG mice at the same time points. In contrast, eliminating B1 cells by deleting btk did not ameliorate the disease. Therefore, MZB are critical for the development of SS.



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