细胞后果,素基质,以及由野生类型和向PAD4引起的细胞表面抗原性
bioRxiv : the preprint server for biology
|January 16, 2026
概括
蛋白质阿尔金因减小酶-4 (PAD4) 导致细胞变化和迁移,可能导致癌症. 新的方法确定了许多PAD4基质,揭示了对自身免疫性疾病的洞察力,例如产生抗素蛋白抗体 (ACPAs) 的自身免疫性疾病.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 蛋白质氨酸减小酶-4 (PAD4) 化蛋白质,改变细胞功能,并可能诱导自身免疫.
- PAD4过活导致NETosis,细胞外释放酶,并通过抗素蛋白抗体 (ACPA) 促进自身免疫性疾病.
- 关于PAD4基质驱动自身免疫的知识有限,尽管在炎症期间观察到细胞表面局部化.
研究的目的:
- 描述外源PAD4的细胞效应,包括形态变化和迁移.
- 使用新型蛋白质组学方法识别内源和外源PAD4蛋白质基质.
- 研究素细胞的免疫性及其在ACPA生成中的作用.
主要方法:
- 外源性PAD4治疗以诱导细胞变化和评估迁移.
- 蛋白质组学分析以确定素和蛋白质.
- 辛格尼克疫苗模型研究幽默反应和ACPA生产.
主要成果:
- 外源性PAD4治疗诱导了形态变化和细胞迁移的增加.
- 分别从500个和1300个蛋白质中鉴定出约1000个内源性和3000个外源性素.
- 准细胞外PAD4到HER2增强了氨酸;氨酸细胞在体内诱导了ACPA的产生.
结论:
- 细胞外PAD4影响细胞表型,促进细胞迁移和潜在的癌症进展.
- 这项研究确定了细胞内部和外部的新型PAD4基质,作为ACPA生成的潜在新表位物.
- 这些发现有助于更好地了解细胞外PAD4的细胞后果及其在自身免疫力中的作用.
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