Autoimmunity to βIV spectrin in paraneoplastic lower motor neuron syndrome

被引:34
作者
Berghs, S
Ferracci, F
Maksimova, E
Gleason, S
Leszczynski, N
Butler, M
De Camilli, P
Solimena, M [1 ]
机构
[1] Yale Univ, Sch Med, Dept Internal Med, Endocrinol Sect, New Haven, CT 06510 USA
[2] Yale Univ, Sch Med, Dept Cell Biol, New Haven, CT 06510 USA
[3] Yale Univ, Sch Med, Howard Hughes Med Inst, New Haven, CT 06510 USA
[4] Osped Belluno, Dept Neurol, I-32100 Belluno, Italy
[5] Bayer Corp, Div Diagnost, Elkhart, IN 46514 USA
关键词
D O I
10.1073/pnas.121170798
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Paraneoplastic neurological disorders may result from autoimmunity directed against antigens shared by the affected neurons and the associated cancer cells, We have recently reported the Ease of a woman with breast cancer and paraneoplastic lower motor neuron syndrome whose serum contained autoantibodies directed against axon initial segments and nodes of Ranvier of myelinated axons. including the axons of motoneurons. Here, we show that major targets of the autoantibodies of this patient are beta IV Sigma1 spectrin and beta IV spectrin 140, two isoforms of the novel PIV spectrin gene. as well as a neuronal surface epitope yet to be identified. Partial improvement of the neurological symptoms following cancer removal was associated with a drastic reduction in the titer of the autoantibodies against PIV spectrin and nodal antigens in general, consistent with the autoimmune pathogenesis of the paraneoplastic lower motor neuron syndrome. The identification of beta IV spectrin isoforms and surface nodal antigens as novel autoimmune targets in lower motor neuron syndrome provide new insights into the pathogenesis of this severe neurological disease.
引用
收藏
页码:6945 / 6950
页数:6
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