首页> 外文期刊>Clinical immunology: The official journal of the Clinical Immunology Society >High-dose BAFF receptor specific mAb-siRNA conjugate generates Fas-expressing B cells in lymph nodes and high-affinity serum autoantibody in a myasthenia mouse model
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High-dose BAFF receptor specific mAb-siRNA conjugate generates Fas-expressing B cells in lymph nodes and high-affinity serum autoantibody in a myasthenia mouse model

机译:高剂量BAFF受体特异性mAb-siRNA缀合物在肌肌小鼠模型中产生淋巴结和高亲和力血清自身抗体的FAS表达的B细胞

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摘要

We investigated potential therapeutic effects of a conjugate of BAFF receptor specific-monoclonal antibody and short interference RNA in a mouse model of myasthenia gravis (EAMG). Whereas high-dose siRNA conjugate resulted in significant accumulation of Fas expressing CD19+/B220+ cells and concurrent expression of type 1 interferon in lymph nodes, low-dose conjugate did not induce FAS expression but caused marked BAFF receptor deficiency in lymph nodes that was further associated with improved MG symptoms. Unexpectedly, despite inhibiting BAFF receptor significantly in PBMCs and secondary lymphoid organs, conjugate treatment did not reduce the levels of autoantibody. Rather, at high dose, it caused robust increase in high affinity anti-AChR antibody and increased levels of serum IL10 and IL-4 cytokines. Our findings reveal a previously undocumented, dose dependent, immunomodulatory distant effect resulting from BAFF receptor specific mAb-siRNA conjugate treatment in an in vivo model of autoimmune disease.(C) 2017 Elsevier Inc. All rights reserved.
机译:我们研究了在肌球血(EAMG)的小鼠模型中的BAFF受体特异性单克隆抗体和短干扰RNA缀合物的潜在治疗效果。虽然高剂量siRNA缀合物导致表达CD19 + / B220 +细胞的Fas积累,并且淋巴结中1型干扰素的同时表达,低剂量缀合物没有诱导FAS表达,但引起了进一步相关的淋巴结缺陷的淋巴结受体缺陷改善的mg症状。如果在PBMC和继发性淋巴器官中显着抑制BAFF受体,尽管抑制了BAFF受体,则缀合物治疗不会降低自身抗体水平。相反,在高剂量时,它引起高亲和力抗ACHR抗体和血清IL10和IL-4细胞因子的增加的稳健增加。我们的研究结果揭示了由BAFF受体特异性MAB-siRNA缀合物治疗的先前未验证的剂量依赖性,免疫调节的远处效果,其在自身免疫疾病的体内模型中。(c)2017年Elsevier Inc.保留所有权利。

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