在AKT2 mRNA中CFIm25依赖的替代多化 程序 巨分极化
Srimoyee Mukherjee1, Atish Barua1, Marzieh Naseri1
1Department of Developmental, Molecular, and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts 02111, USA.
bioRxiv : the preprint server for biology
|July 16, 2025
概括
CFIm25通过控制替代mRNA多氨基化来调节巨细胞的两极分化. 它的过度表达促进了M1巨细胞,增强了免疫反应和癌细胞的抑制,而它的击倒有利于M2巨细胞.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 在RNA生物学,RNA生物学.
背景情况:
- 巨细胞的两极分化对于免疫力,恒常性和疾病至关重要.
- 巨细胞两极分化的调节涉及复杂的信号传递,转录,拼接,翻译和mRNA稳定性.
- 替代mRNA多化 (APA) 在巨细胞两极化中的作用在很大程度上是未知的.
研究的目的:
- 为了研究CFIm25的功能,一个关键的APA调节器,在巨细胞两极分化.
- 阐明CFIm25影响巨细胞身份的分子机制.
主要方法:
- 在巨细胞中过度表达和击败CFIm25.
- 评估巨细胞极化标志物 (例如,氧化合成酶活性,CD80表达,细胞因子分泌).
- 分析AKT2mRNA多化和蛋白质水平.
- 功能性检测包括细胞,迁移和癌细胞抑制.
- 反感性寡核酸介导的AKT2多基化位点的阻断.
主要成果:
- CFIm25过度表达诱导了M1两极分化,其特征是增加的促炎性标记物和减弱的M2表型.
- CFIm25 Knockdown 抑制了 M1 的特征,并促进了 M2 的特征.
- CFIm25增强了巨细胞的功能,如细胞分裂,迁移和癌细胞抑制.
- 从机理上讲,CFIm25促进了AKT2mRNA的近端多化,增加了Akt2蛋白,并支持了M1极化.
- 阻断邻近的AKT2多基化部位减少了Akt2表达和M1特征.
结论:
- CFIm25是巨细胞两极分化和身份的关键调节者.
- CFIm25通过调节AKT2mRNA多基解来影响巨细胞的功能.
- 研究结果提供了对基于RNA的免疫调节和针对巨细胞两极分化的潜在治疗策略的见解.
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