整个外体的分析确定了一种罕见的EXD3误解变体,与糖尿病病相关
Niina Sandholm1,2,3, Joanne B Cole4,5,6,7,8, Viji Nair9
1Folkhälsan Research Center, Helsinki, Finland.
Kidney international reports
|January 16, 2026
概括
一种罕见的EXD3基因变异在1型糖尿病患者中显著增加了糖尿病病风险. 功能性研究表明,EXD3在受细胞完整性中起作用,这表明DKD的新治疗点.
科学领域:
- 遗传学 是一个遗传学.
- 腎臟病學 (nephrology) 是一種醫學專業.
- 内分泌学 在内分泌学.
背景情况:
- 糖尿病病 (DKD) 是一种严重的糖尿病并发症,具有重要的遗传成分.
- 全基因组关联研究 (GWAS) 已经确定了常见的变异,但在DKD病变发生过程中,低频和罕见的编码变异尚未得到充分研究.
研究的目的:
- 调查低频率和罕见编码变体在糖尿病病 (DKD) 易感性中的作用.
- 在1型糖尿病 (T1D) 患者中确定导致DKD的新型遗传因素.
主要方法:
- 在多达10,312名T1D患者的外体全方位元分析中,分析了非同义变异.
- 对低频率和罕见变异的基因水平分析,在独立队列 (T1D和2型糖尿病[T2D]) 中进行复制.
- 基因表达在培养的人类 podocytes 的功能性评估.
主要成果:
- 在EXD3基因 (rs200080727) 中的一种新鲜罕见误解变异与DKD风险密切相关 (OR = 8.7,P = 4.5 × 10^-9).
- 在DKD脏组织中,EXD3被降低调节,其在细胞中的降低降低了氨酸的表达,表明其具有功能作用.
- 基因水平分析确定了7个与DKD相关的基因,包括MUC5B,具有复制证据.
结论:
- 一种罕见的EXD3变种是T1D中DKD的重要风险因素.
- EXD3 涉及 podocyte 完整性和 DKD 病原体,需要进一步研究其分子机制.
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