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Cell Type-Specific Intralocus Interactions Reveal Oligodendrocyte Mechanisms in MS.

细胞类型特异性胞内相互作用揭示了MS中的少突胶质细胞机制。

  • 影响因子:24.38
  • DOI:10.1016/j.cell.2020.03.002
  • 作者列表:"Factor DC","Barbeau AM","Allan KC","Hu LR","Madhavan M","Hoang AT","Hazel KEA","Hall PA","Nisraiyya S","Najm FJ","Miller TE","Nevin ZS","Karl RT","Lima BR","Song Y","Sibert AG","Dhillon GK","Volsko C","Bartels CF","Adams DJ","Dutta R","Gallagher MD","Phu W","Kozlenkov A","Dracheva S","Scacheri PC","Tesar PJ","Corradin O
  • 发表时间:2020-04-16
Abstract

:Multiple sclerosis (MS) is an autoimmune disease characterized by attack on oligodendrocytes within the central nervous system (CNS). Despite widespread use of immunomodulatory therapies, patients may still face progressive disability because of failure of myelin regeneration and loss of neurons, suggesting additional cellular pathologies. Here, we describe a general approach for identifying specific cell types in which a disease allele exerts a pathogenic effect. Applying this approach to MS risk loci, we pinpoint likely pathogenic cell types for 70%. In addition to T cell loci, we unexpectedly identified myeloid- and CNS-specific risk loci, including two sites that dysregulate transcriptional pause release in oligodendrocytes. Functional studies demonstrated inhibition of transcriptional elongation is a dominant pathway blocking oligodendrocyte maturation. Furthermore, pause release factors are frequently dysregulated in MS brain tissue. These data implicate cell-intrinsic aberrations outside of the immune system and suggest new avenues for therapeutic development. VIDEO ABSTRACT.

摘要

多发性硬化 (MS) 是一种自身免疫性疾病,其特征在于攻击中枢神经系统 (CNS) 内的少突胶质细胞。尽管广泛使用免疫调节疗法,但由于髓鞘再生失败和神经元丧失,患者仍可能面临进行性残疾,这表明额外的细胞病变。在这里,我们描述了鉴定疾病等位基因发挥致病作用的特定细胞类型的一般方法。将这种方法应用于MS风险位点,我们确定了70% 的可能致病细胞类型。除了T细胞位点之外,我们意外地鉴定了髓样和CNS特异性风险位点,包括在少突胶质细胞中失调转录暂停释放的两个位点。功能研究证明抑制转录延伸是阻断少突胶质细胞成熟的主要途径。此外,暂停释放因子在MS脑组织中经常失调。这些数据暗示了免疫系统之外的细胞固有畸变,并提出了治疗发展的新途径。视频摘要。

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影响因子:1.52
发表时间:2020-04-02
DOI:10.1080/09273948.2019.1597896
作者列表:["Apivatthakakul A","Kunavisarut P","Rothova A","Pathanapitoon K"]

METHODS::Purpose: To report on ocular Vogt-Koyanagi-Harada (VKH)-like syndrome under vemurafenib treatment for metastatic melanoma.Design: A case report.Method: Description of clinical and imaging manifestations including fundus photography, fluorescein, and indocyanine green angiography.Results: A 46-year-old Thai female was diagnosed with metastatic melanoma of the skin and had been treated with multiple surgical excisions, radiotherapy, and vemurafenib (initial dose 480 mg orally twice daily, subsequently increased to maximum dose of 960 mg twice daily). After 6 months of vemurafenib use, she complained of bilateral redness and photophobia and was diagnosed with bilateral anterior uveitis, which was topically treated. Two weeks later, her visual acuity (VA) sharply deteriorated to 20/80 and counting fingers. Ocular examination at that stage stronly resembled acute VKH disease. She exhibited intraocular inflammation, and her fundus examination revealed bilateral optic disc swelling and serous retinal detachment. Fluorescein angiogram showed disc leakage and multiple pinpoint hyperfluorescence leakage spots and indocyanine green demonstrated multiple hypofluorescent spots. Oral prednisolone 30 mg/day was commenced while vemurafenib medication was ceased. Three weeks later, her vision improved, and serous retinal detachment subsided. However, her cutaneous melanoma recurred.Conclusions: Vemurafenib, a potential adjunct treatment for metastatic melanoma, was complicated by the development of panuveitis, papillitis, and multiple serous detachments. These ocular symptoms were similar to the presentation of acute VKH syndrome.

翻译标题与摘要 下载文献
影响因子:2.19
发表时间:2020-01-01
DOI:10.1111/dmcn.14268
作者列表:["Crow YJ","Shetty J","Livingston JH"]

METHODS::Comprehensive reviews of the clinical characteristics and pathogenesis of Aicardi-Goutières syndrome (AGS), particularly its contextualization within a putative type I interferonopathy framework, already exist. However, recent reports of attempts at treatment suggest that an assessment of the field from a therapeutic perspective is warranted at this time. Here, we briefly summarize the neurological phenotypes associated with mutations in the seven genes so far associated with AGS, rehearse current knowledge of the pathology as it relates to possible treatment approaches, critically appraise the potential utility of therapies, and discuss the challenges in assessing clinical efficacy. WHAT THIS PAPER ADDS: Progress in understanding AGS disease pathogenesis has led to the first attempts at targeted treatment. Further rational therapies are expected to become available in the short- to medium-term.

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翻译标题与摘要 下载文献
影响因子:1.52
发表时间:2020-04-02
DOI:10.1080/09273948.2019.1603312
作者列表:["Takayama K","Obata H","Takeuchi M"]

METHODS::Purpose: To report the efficacy of adalimumab in a case of chronic Vogt-Koyanagi-Harada (VKH) disease refractory to conventional corticosteroids and immunosuppressive therapy and complicated by central serous chorioretinopathy (CSC).Case report: A 66-year-old woman diagnosed with VKH was treated with intravenous corticosteroids followed by oral corticosteroids and cyclosporine. However, systemic corticosteroids could not be tapered because of recurrent ocular inflammation and systemic complications (diabetes mellitus, moon face, bone weakness), while CSC appeared in both eyes. A diagnosis of chronic VKH resistant to medications complicated by corticosteroid-induced CSC was made. Systemic corticosteroids and cyclosporine were tapered and adalimumab initiated. Bilateral ocular inflammation and CSC were gradually reduced and visual acuity improved without any adverse effect. Twelve months after starting adalimumab monotherapy, no signs of active VKH and CSC were present.Conclusions: Adalimumab is one of the effective therapeutic options for refractory VKH disease complicated with corticosteroid-induced adverse effects.

神经系统自身免疫性疾病方向

神经系统自身免疫性疾病是以自身免疫细胞、免疫分子等攻击神经系统为主要致病机制的自身免疫性疾病。在免疫反应中,作用于神经系统自身抗原的致病抗体统称为神经系统自身抗体。

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