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Updated: Mar 12, 2026

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综合性多组学分析和CRISPR查在小鼠免疫系统中确定了功能性非正规翻译位点

Eric Malekos, Valeriy Smaliy, Susan Carpenter

bioRxiv : the preprint server for biology

|March 11, 2026

概括

这项研究揭示了小鼠免疫系统中数千种新的蛋白质编码基因,包括调节巨细胞功能和天生的免疫力的新型逆转录病毒蛋白质.

科学领域:

免疫学免疫学免疫学
基因组学就是基因组学.
分子生物学分子生物学

背景情况:

非正典翻译产生了数千种新型蛋白质,但它们在免疫系统中的功能在很大程度上是未知的.
以前的研究集中在癌症细胞系上,忽视了免疫系统独特的转化场景.

研究的目的:

在小鼠免疫系统中全面调查非正典翻译.
为了功能性地描述这些巨细胞和先天免疫信号中的新型蛋白质.
为了确定以前未知的巨生物学的调节者.

主要方法:

在20个小鼠白细胞数据集中统一的Ribo-seq元分析.
蛋白质基因组与质谱数据的整合.
在巨细胞中对角的CRISPR屏 (适应性和TLR1/TLR2-NFκB记者).

主要成果:

确定了22276个非正规编码序列 (CDS),包括上游ORF (uORF),下游ORF以及非编码RNA和伪基因 (ncORF) 上的ORF.
优先考虑的高可靠性蛋白质产品,包括伪基和lncRNA编码的指蛋白.
发现了内源性逆转录病毒包膜蛋白 (SYNIR和SEMR) 调节巨细胞NFκB信号和基因程序.

结论:

非正典翻译在免疫细胞功能中起着重要作用,特别是在巨细胞中.
鉴定了内源性逆转录病毒蛋白在天生的免疫力中的新型调节作用.
提供社区资源,包括更新的注释和交互式基因组浏览器会话.

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