第一个巴西病例报告,涉及具有相同ISG15突变的非相关患者
Sarah Maria da Silva Napoleao1, Ranieri Coelho Salgado2, Janaira Fernandes Severo Ferreira3
1Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Lineu Prestes Avenue, São Paulo, SP, 1730, Brazil. smnapoleao@gmail.com.
Journal of clinical immunology
|October 4, 2024
概括
罕见的遗传性疾病ISG15缺乏症在两个不相关的巴西患者中被发现,这些患者具有共同的遗传突变. 这一发现突出了不同的传染病和神经症状,推动了我们对遗传易感性的理解.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
- 神经学 神经学
背景情况:
- ISG15缺乏症是一种罕见的遗传性疾病,导致孟德尔对菌根细菌感染 (MSMD) 和I型单基性干扰症的敏感性.
- 它的特点是来自低毒性菌根菌的反复感染.
研究的目的:
- 描述两个与ISG15变异相同的无关患者的实验室和分子特征.
- 研究ISG15变种对免疫功能和临床表现的影响.
主要方法:
- 临床评估和调查.
- 干扰素 (IFN-γ) 生产的评估.
- 整体外体测序 (WES) 和桑格测序用于遗传特征.
- 在基分子分析ISG15变体对蛋白质的影响.
- 用于转录组分析的RNA测序 (RNAseq).
主要成果:
- 在两个不相关的巴西患者中确定了同卵性ISG15基因突变 (c.83 T>A).
- 两位患者的IFN-γ产量都较低,并呈现出不同的传染和神经现象型.
- 突变导致一种不稳定的蛋白质 (p.L28Q),具有增加的灵活性.
- 转录组分析显示了干扰素通路的显著上调.
结论:
- 这项研究报告了巴西第一个ISG15突变 (c.83 T>A) 在无关患者中的病例.
- 这些发现表明,与这种ISG15变种相关的传染和神经症状.
- 了解这些遗传易感性对于诊断,治疗和公共卫生战略至关重要.
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