В зависимости от лимфотоксинов повышенная менингелия CXCL13: соотношения BAFF приводят к травме серого вещества.
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Naouar Ikbel, Pangan Andrei, Zuo Michelle, Raza Syed Ali, Champagne-Jorgensen Kevin, Patel Jyot, Wang Angela, Pu Annie, Ward Lesley, Ahn Jennifer S Y, Sayeed Faizah N, Zhu Jingwen, Pössnecker Elisabeth, Spring Shoshana, Sled John G, Cenni Bruno, Nuesslein-Hildesheim Barbara, Browning Jeffrey L, Pröbstel Anne-Katrin, Reich Daniel S, Gommerman Jennifer L, Ramaglia Valeria
Аннотация
Оригинал публикации
Lymphotoxin-dependent elevated meningeal CXCL13:BAFF ratios drive gray matter injury.
In multiple sclerosis (MS), B cell-rich tertiary lymphoid tissues (TLTs) in the brain leptomeninges associate with cortical gray matter injury. Using a model of Th17 cell-driven experimental autoimmune encephalomyelitis in mice, we found that inhibitors of Bruton's tyrosine kinase (BTKi) prevented TLT formation and cortical pathology in a B cell activating factor (BAFF)-dependent manner. BTKi reduced expression of lymphotoxin ligands, and cotreatment with a lymphotoxin-β receptor agonist abrogated the benefits of BTKi. TLT and cortical pathology tracked with a high CXCL13:BAFF ratio in the leptomeninges, which was reduced by BTKi. Moreover, we observed high CXCL13:BAFF ratios in post mortem cerebral spinal fluid from patients with MS and pathologically confirmed leptomeningeal inflammation, as well as in living patients with MS and radiologically confirmed paramagnetic rim lesions. In summary, using experimental autoimmune encephalomyelitis, we revealed a molecular circuit that leads to TLT formation and cortical injury with translational relevance for detection of this pathology in patients with MS.