在培养的皮肤细胞中双链RNA水平的显著变化
Shaymaa Sadeq1,2, Suwalak Chitcharoen3,4, Surar Al-Hashimi1,5
1Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
Cells
|February 9, 2024
概括
细胞质双链RNA (dsRNA) 触发天生的免疫力. 与纤维细胞相比,黑色素瘤细胞表现出较低的线粒体dRNA和对dRNA诱导干预的耐受性降低.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 内源双链RNA (dsRNA) 是一种关键的先天性免疫激活剂.
- 细胞质dsrna积累,由于违反保护机制,可以触发免疫信号,亡,并与疾病和衰老有关.
- 细胞质dRNA的水平对免疫反应至关重要.
研究的目的:
- 分析和比较黑色素瘤细胞系和初级皮肤纤维细胞中的dsRNA转录组.
- 为了研究细胞起源和内源性dsrna的调节.
- 评估细胞适应不同dRNA水平的细胞适应性.
主要方法:
- 从细胞系和纤维细胞中丰富dRNA.
- 用于dSRNA转录组分析的RNA测序.
- 北方涂抹,免疫细胞化学,RT-qPCR和西部涂抹用于验证.
主要成果:
- 在黑色素瘤细胞和纤维细胞之间观察到dsRNA读数的显著差异.
- 核转录 (80-90%) 和线粒体 (10-20%) 都有助于dsRNA池,在癌细胞中线粒体的贡献较低.
- 黑色素瘤细胞对dsRNA水平表现出轻微的适应性,包括调高甲酸合成酶和RNP125的调节,这会负面调节dsRNA传感器.
结论:
- 与初级纤维细胞相比,黑色素瘤细胞系具有明显的dsRNA转录组.
- 转型细胞系可能对增加内源性dsRNA形成的干预措施的耐受性降低.
- 了解dsRNA水平和细胞反应对于癌症免疫学和治疗开发至关重要.
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