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由T细胞激活诱导的替代3'UTR表达以时间和信号依赖的方式调节

Davia Blake^1,2, Matthew R Gazzara^1,3, Isabel Breuer^1,4

¹Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.

Scientific reports

|May 14, 2024

概括

替代多基化 (APA) 在T细胞激活过程中调节3'未翻译区域 (3'UTR) 长度. 早期的APA变化,可能由RBM3驱动,发生在增殖之前,影响基因表达.

科学领域:

免疫学免疫学免疫学
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

替代多基化 (APA) 调节了3'未翻译区域 (3'UTR) 的长度,这一过程对于T细胞激活等细胞状态转换至关重要.
在T细胞激活过程中APA的调节机制和功能结果还不清楚.

研究的目的:

综合分析激活后人类CD4+T细胞中APA的时间和特定条件调节.
调查CD28代刺激在调节APA动态中的作用.
阐明驱动早期APA变化的分子机制.

主要方法:

在激活的原始人类CD4+T细胞中详细时间分析APA事件.
在CD28代刺激条件下对APA变化的评估.
动机分析以确定涉及早期APA变化的监管因素.

主要成果:

全球APA变化在T细胞激活期间被暂时调节,CD28辅助刺激增强了子集.
大多数APA事件涉及3'UTR缩短,但mTOR通路中的基因显示3'UTR延长.
显著的APA变化发生在早期,细胞增殖和多基化机制的上调之前,可能是由RBM3.3驱动的.

结论:

这项研究提供了在T细胞激活过程中对APA调节的详细理解,突出了时间动态和辅助刺激的影响.
早期的APA变化,可能由RBM3调解,代表了一个独立于扩散和核心机械升级监管的新型监管机制.
这些发现表明,APA通过影响T细胞功能和基因表达的新途径.

关键词:

3",UTR"可以使用.替代性的多基解.CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD4 CD4 CD4 CD4 CD4 CD4 CD5 CD5 CD5 CD5 CD5 CD6 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD7 T细胞受体的T细胞受体.

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