Aquaporin 4 molecular mimicry and implications for neuromyelitis optica.

Aquaporin 4 molecular mimicry and implications for neuromyelitis optica.
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DOI:
10.1016/j.jneuroim.2013.04.015
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发表时间:
2013-07-15
影响因子:
3.3
通讯作者:
Friedland, Robert P.
Friedland, Robert P.
中科院分区:
医学4区
文献类型:
--
作者:
Vaishnav, Radhika A.;Liu, Ruolan;Chapman, Joab;Roberts, Andrew M.;Ye, Hong;Rebolledo-Mendez, Jovan D.;Tabira, Takeshi;Fitzpatrick, Alicia H.;Achiron, Anat;Running, Mark P.;Friedland, Robert P.

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视神经脊髓炎(NMO)与水通道蛋白4 (AQP4)抗体相关。我们假设AQP4抗体可以通过暴露于环境蛋白而触发。我们将人类AQP4蛋白与植物和细菌蛋白进行比较,以调查是否存在明显相似的结构和序列。玉米ZmTIP4-1与已知的NMO-IgG表位AQP4(207-232)高度相似。评估NMO和非NMO血清对AQP4(207-232)和玉米肽的反应性。NMO患者血清对两种多肽及植物组织均表现出反应性。这些发现为进一步研究环境在NMO病因学中的作用提供了依据。
Neuromyelitis Optica (NMO) is associated with antibodies to aquaporin 4 (AQP4). We hypothesized that antibodies to AQP4 can be triggered by exposure to environmental proteins. We compared human AQP4 to plant and bacterial proteins to investigate the occurrence of significantly similar structures and sequences. High similarity to a known epitope for NMO-IgG, AQP4(207-232), was observed for corn ZmTIP4-1. NMO and non-NMO serum was assessed for reactivity to AQP4(207-232) and the corn peptide. NMO patient serum showed reactivity to both peptides as well as to plant tissue. These findings warrant further investigation into the role of the environment in NMO etiology.
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