JCI:血脑屏障的免疫交换或助力多发性硬化症研究

2013-05-06 T.Shen 生物谷

2012年11月21日 讯 /生物谷BIOON/ --近日,刊登在国际杂志Journal of Clinical Investigation上的一篇研究报告中,来自加州大学的研究者通过获取一些多发性硬化病人多的DNA序列并进行研究,揭示了一种“免疫交换”机制的存在,这种机制可以使得致病细胞在大脑内外互相移动。 从脑脊髓液和血样中获取的细胞名为B细胞,其可以帮助机体清理来自外部的机体感染。当前认为

2012年11月21日 讯 /生物谷BIOON/ --近日,刊登在国际杂志Journal of Clinical Investigation上的一篇研究报告中,来自加州大学的研究者通过获取一些多发性硬化病人多的DNA序列并进行研究,揭示了一种“免疫交换”机制的存在,这种机制可以使得致病细胞在大脑内外互相移动。

从脑脊髓液和血样中获取的细胞名为B细胞,其可以帮助机体清理来自外部的机体感染。当前认为,当大脑中的自反应B细胞处于激活状态引发炎症时,多发性硬化症就会表现出疾病的症状。理解大脑和血液之间细胞的明显交换是开发诊断和治疗方法的关键,因为大脑中出现问题的激活B细胞会从大脑中移动到外周血中。

研究者Hans表示,如果我们可以鉴别出有问题的B细胞,那么我们就可以运动精确的工具来更好地诊断以及监控疾病的发病以及开发新型疗法。多发性硬化症是一种常见的、慢性病,影响着350,000个美国人的健康。这种疾病在妇女中的流行率大约是在男性中的3倍,目前研究者并不知道原因。

这项研究中,研究者揭示了我们可以使用一种精确的疗法来针对靶向性的B细胞,利用特殊的疗法来准确鉴别在病人机体中正常工作的B细胞。目前研究者更需要开发出新型的诊断、监测以及治疗该疾病的方法,这项研究或许为研究者进一步开展工作提供很大的帮助。

硬化相关的拓展阅读:

B cell exchange across the blood-brain barrier in multiple sclerosis

In multiple sclerosis (MS) pathogenic B cells likely act on both sides of the blood-brain barrier (BBB). However, it is unclear whether antigen-experienced B cells are shared between the CNS and the peripheral blood (PB) compartments. We applied deep repertoire sequencing of IgG heavy chain variable region genes (IgG-VH) in paired cerebrospinal fluid and PB samples from patients with MS and other neurological diseases to identify related B cells that are common to both compartments. For the first time to our knowledge, we found that a restricted pool of clonally related B cells participated in robust bidirectional exchange across the BBB. Some clusters of related IgG-VH appeared to have undergone active diversification primarily in the CNS, while others have undergone active diversification in the periphery or in both compartments in parallel. B cells are strong candidates for autoimmune effector cells in MS, and these findings suggest that CNS-directed autoimmunity may be triggered and supported on both sides of the BBB. These data also provide a powerful approach to identify and monitor B cells in the PB that correspond to clonally amplified populations in the CNS in MS and other inflammatory states.

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    2013-12-26 caobinglei8079
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    2013-08-23 jml2009
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