两个独立的中国家庭的分子和临床特征,其中有蛋白C缺乏症
Mengzhen Wen1, Yifan Lu1, Haixiao Xie1
1Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Shangcai Village, Ouhai District, Wenzhou, 325000, China.
在患有深静脉血栓和肺栓塞的中国家庭中,发现了蛋白C基因 (PROC) 的两种新奇突变. 新发现的p.Trp444Arg突变损害了蛋白C的功能和分泌.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 血液学 血液学 血液学
背景情况:
- 遗传性蛋白C (PC) 缺乏症是一种罕见的遗传性疾病,使个体易患静脉血栓塞栓症.
- 确定PC缺乏的分子基础对于诊断和管理至关重要.
研究的目的:
- 调查两个中国家庭遗传性蛋白C缺乏症的临床和分子病原性基础.
- 描述新发现的PROC基因突变的功能影响,包括新发现的p.Trp444Arg变异.
主要方法:
- 对患有深静脉血栓症 (DVT) 和肺栓塞 (PE) 患者的临床评估.
- 基因分析包括PCR放大和PROC基因的测序.
- 试验室内研究涉及蛋白质表达,西方涂抹,ELISA,免疫光和血栓生成试验 (TGA).
- 生物信息学和蛋白质建模用于突变分析.
主要成果:
- 在两个独立的中国家族中发现了两种误解突变,p.Arg440Cys和p.Trp444Arg.
- 预计这两种突变都会影响蛋白C功能,患者的血栓生成受损.
- 新的p.Trp444Arg突变导致细胞外PC抗原和蛋白质水平降低,这表明分泌功能受损.
- p.Trp444Arg突变没有显著影响mRNA表达水平.
结论:
- 发现的PROC基因突变p.Arg440Cys和p.Trp444Arg,很可能是这些中国家族遗传性蛋白C缺乏症的原因.
- p.Trp444Arg突变代表了新发现的蛋白C缺乏症的原因,对蛋白质分泌有影响.
- 这些发现有助于对遗传血栓友的理解,并扩大已知的PROC突变的范围.
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