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have been reported to play crucial roles in immune responses and other biological processes, but the role of miR-181a in myasthenia gravis (MG) has been relatively less studied. We found that miR-181a was downregulated in the peripheral blood mononuclear cells (PBMCs) of MG patients and was associated with QMGs and anti-AChR Ab levels. In vitro experiments indicated that miR-181a was involved in the modulation of CD4 + T cell activation and plasticity and that miR-181a the expression level of the Th1-related transcription factor T-bet and the Th17-related transcription factor RORt. In the in vivo experiment, miR-181a treatment alleviated experimental autoimmune myasthenia gravis (EAMG) symptoms and affected both CD4 + T cell differentiation and the production of anti-AChR antibodies. Moreover, in this study, we also found that IL-2 was 15214141, ja, Downloaded from https://onlinelibrary.wiley.com/

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