Long-term human coronavirus-myelin cross-reactive T-cell clones derived from multiple sclerosis patients.

Long-term human coronavirus-myelin cross-reactive T-cell clones derived from multiple sclerosis patients.
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DOI:
10.1016/j.clim.2007.02.002
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发表时间:
2007-06
期刊:
Clinical immunology (Orlando, Fla.)
影响因子:
--
通讯作者:
Talbot PJ
Talbot PJ
中科院分区:
其他
文献类型:
--
作者:
Boucher A;Desforges M;Duquette P;Talbot PJ

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Autoimmune reactions associated with MS involve genetic and environmental factors. Because murine coronaviruses induce an MS-like disease, the human coronaviruses (HCoV) are attractive candidates as environmental factors involved in a demyelinating pathology. We previously reported the isolation of HCoV-229E/myelin basic protein (MBP) cross-reactive T-cell lines (TCL) in MS patients. To investigate antigenic cross-reactivity at the molecular level, 155 long-term T-cell clones (TCC) were derived from 32 MS patients by in vitro selection with MBP, proteolipid protein (PLP) or HCoV (strains 229E and OC43). Overall, 114 TCC were virus-specific, 31 were specific for myelin Ag and 10 other were HCoV/myelin cross-reactive. Twenty-eight virus-specific TCC and 7 myelin-specific TCC were obtained from six healthy donors. RACE RT-PCR amplification of the Vβ chains of five of ten the cross-reactive TCC confirmed clonality and sequencing identified the CDR3 region associated with cross-reactivity. Our findings have promising implications in the investigation of the role of molecular mimicry between coronaviruses and myelin in MS as a mechanism related to disease initiation or relapses.
人T淋巴细胞上的双T细胞受体β链表达。
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