与疾病相关的调节性DNA变体和表皮体中的恒常转录因子
bioRxiv : the preprint server for biology
|November 28, 2024
概括
研究人员通过研究转录因子和基因调节来确定影响皮肤疾病风险的遗传变异. 这项工作突出了被破坏的表皮分化作为多原性皮肤疾病中常见的机制.
科学领域:
- 遗传学 遗传学 是一个
- 皮肤病学 皮肤病学
- 分子生物学分子生物学
背景情况:
- 多遗传性疾病涉及复杂的遗传风险因素.
- 了解调控DNA中的非编码变体对于疾病研究至关重要.
- 表皮平衡的破坏是许多皮肤疾病的标志.
研究的目的:
- 识别与多基性皮肤疾病风险相关的非编码单核酸变体 (SNV).
- 确定与这些SNV及其向基因结合的转录因子 (TF).
- 阐明皮肤分化失调在多基性皮肤疾病中的作用.
主要方法:
- 大规模并行记者基因分析 (MPRA) 用于测试3,451个SNVs.
- 克里斯普尔淘汰屏幕确定了表皮分化的必要TF.
- 人口采样CUT&RUN分析了SNVs的等位基因特异性DNA结合 (ASB).
主要成果:
- 确定了355个差异活跃的SNV (daSNV).
- 失调的表皮分化被证实是共享的病理机制.
- 确定了108个对表皮分化至关重要的TF,包括ZNF217,CXXC1,FOXJ2,IRX2和NRF1的新角色.
- 在皮肤疾病基因附近的daSNV中发现了ASB差异,涉及SP/KLF和AP-1/2TFs.
结论:
- 不调节的表皮分化与各种多基因皮肤疾病的风险有关.
- 这项研究为了解皮肤疾病的遗传基础提供了宝贵的资源.
- 识别TF-SNV相互作用为治疗策略提供了新的途径.
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