An adult passive transfer mouse model to study desmoglein 3 signaling in pemphigus vulgaris.

An adult passive transfer mouse model to study desmoglein 3 signaling in pemphigus vulgaris.
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DOI:
10.1038/jid.2011.299
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发表时间:
2012-02
影响因子:
6.5
通讯作者:
Mueller, Eliane J.
Mueller, Eliane J.
中科院分区:
医学1区
文献类型:
--
作者:
Schulze, Katja;Galichet, Arnaud;Sayar, Beyza S.;Scothern, Anthea;Howald, Denise;Zymann, Hillard;Siffert, Myriam;Zenhaeusern, Denise;Bolli, Reinhard;Koch, Peter J.;Garrod, David;Suter, Maja M.;Mueller, Eliane J.

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越来越多的证据表明,桥粒芯糖蛋白3(Dsg 3)下游的细胞内信号转导的变化可能在自身免疫性疾病寻常型天疱疮(PV)的上皮水疱中起重要作用。目前,大多数关于PV的研究涉及将致病性抗体被动转移到尚未完成表皮形态发生的新生小鼠中,并且不允许分析成熟毛囊(HF)和干细胞龛。为了研究Dsg 3抗体诱导的信号传导在成人表皮在HF周期的定义阶段,我们在这里开发了一个模型,被动转移的单特异性致病性Dsg 3抗体AK 23到成年8周龄C57 B1/6 J小鼠。使用组织病理学和分子方法验证,我们发现,该模型忠实地概括了PV患者和PV模型中描述的主要特征。在AK 23转移后两小时,我们观察到桥粒之间的细胞间隙变宽和EGFR活化,随后是Myc表达增加和表皮过度增殖,桥粒Dsg 3耗尽以及HF和口腔粘膜中的主要起泡。这些数据证实,成人被动转移小鼠模型非常适合于详细研究Dsg 3抗体介导的信号传导在成人皮肤中,提供了研究新的角质形成细胞特异性治疗策略的基础。
Evidence has accumulated that changes in intracellular signaling downstream of desmoglein 3 (Dsg3) may play a significant role in epithelial blistering in the autoimmune disease pemphigus vulgaris (PV). Currently, most studies on PV involve passive transfer of pathogenic antibodies into neonatal mice which have not finalized epidermal morphogenesis, and do not permit analysis of mature hair follicles (HFs) and stem cell niches. To investigate Dsg3 antibody-induced signaling in the adult epidermis at defined stages of the HF cycle, we here developed a model with passive transfer of the monospecific pathogenic Dsg3 antibody AK23 into adult 8-week-old C57Bl/6J mice. Validated using histopathological and molecular methods, we found that this model faithfully recapitulates major features described in PV patients and PV models. Two hours after AK23 transfer we observed widening of intercellular spaces between desmosomes and EGFR activation, followed by increased Myc expression and epidermal hyperproliferation, desmosomal Dsg3 depletion and predominant blistering in HFs and oral mucosa. These data confirm that the adult passive transfer mouse model is ideally suited for detailed studies of Dsg3 antibody-mediated signaling in adult skin, providing the basis for investigations on novel keratinocyte-specific therapeutic strategies.
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期刊: AUTOIMMUNITY
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DOI: 10.1111/j.0022-202x.2005.23655.x
发表时间: 2005-05-01
影响因子: 6.5
作者:
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通讯作者: Müller, EJ