单胞胎三胞胎具有青春期开始的自身免疫和18p微删除,涉及PTPRM
Morten Krogh Herlin1, Jens Magnus Bernth Jensen2,3, Lotte Andreasen1
1Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark.
Frontiers in genetics
|October 3, 2024
概括
基因剂量异常,如18p删除综合征,可以增加自身免疫性疾病的风险. 这项研究将PTPRM基因半复合性与增加的STAT3激活和Th17细胞水平联系起来,这表明18p删除中的自身免疫机制.
科学领域:
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
- 发展生物学 发展生物学
背景情况:
- 拷贝数变异和异常的基因剂量与自身免疫性疾病的易感性有关.
- 18p删除综合征是一种染色体疾病,与智力障碍,面部形和大脑异常有关,但其自身免疫表现的原因尚不清楚.
研究的目的:
- 研究18p删除综合征的单胞胎三胞胎独特病例中自身免疫表现的基因和分子机制.
- 在被删除区域内识别可能导致免疫失调和自身免疫敏感性的特定基因.
主要方法:
- 染色体微阵列分析和全基因组测序以确定删除.
- 文献审查以确定候选基因.
- 试验用于研究PTPRM表达,STAT3酸化和免疫细胞分数 (Th17,Treg).
主要成果:
- 三胞胎在18p11.31p11.21中进行了新的5.9Mb删除,包括19个编码蛋白质的基因.
- 确定了PTPRM作为候选基因,作为STAT3.3的负调节者.
- 在三胞胎中观察到增加的STAT3酸化和更高的Th17细胞水平,支持PTPRM半双重性导致增加STAT3激活的假设.
结论:
- 通过增加STAT3激活和Th17细胞分化,PTPRM半性可能导致18p删除综合征的自身免疫敏感性.
- 向抑制IL-17可能是与18p/PTPRM删除相关的自身免疫疾病的潜在治疗策略.
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