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不同 HeLa 株中转座的可变模式为 SINE RNA 转座过程提供了机制上的见解。

Variable patterns of retrotransposition in different HeLa strains provide mechanistic insights into SINE RNA mobilization processes.

机构信息

Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA.

Department of Genomic Medicine, GENYO, Centre for Genomics and Oncological Research, Pfizer-University of Granada-Andalusian Regional Government, PTS Granada 18016, Spain.

出版信息

Nucleic Acids Res. 2024 Jul 22;52(13):7761-7779. doi: 10.1093/nar/gkae448.

DOI:10.1093/nar/gkae448
PMID:38850156
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11260458/
Abstract

Alu elements are non-autonomous Short INterspersed Elements (SINEs) derived from the 7SL RNA gene that are present at over one million copies in human genomic DNA. Alu mobilizes by a mechanism known as retrotransposition, which requires the Long INterspersed Element-1 (LINE-1) ORF2-encoded protein (ORF2p). Here, we demonstrate that HeLa strains differ in their capacity to support Alu retrotransposition. Human Alu elements retrotranspose efficiently in HeLa-HA and HeLa-CCL2 (Alu-permissive) strains, but not in HeLa-JVM or HeLa-H1 (Alu-nonpermissive) strains. A similar pattern of retrotransposition was observed for other 7SL RNA-derived SINEs and tRNA-derived SINEs. In contrast, mammalian LINE-1s, a zebrafish LINE, a human SINE-VNTR-Alu (SVA) element, and an L1 ORF1-containing mRNA can retrotranspose in all four HeLa strains. Using an in vitro reverse transcriptase-based assay, we show that Alu RNAs associate with ORF2p and are converted into cDNAs in both Alu-permissive and Alu-nonpermissive HeLa strains, suggesting that 7SL- and tRNA-derived SINEs use strategies to 'hijack' L1 ORF2p that are distinct from those used by SVA elements and ORF1-containing mRNAs. These data further suggest ORF2p associates with the Alu RNA poly(A) tract in both Alu-permissive and Alu-nonpermissive HeLa strains, but that Alu retrotransposition is blocked after this critical step in Alu-nonpermissive HeLa strains.

摘要

Alu 元件是非自主的短散布元件 (SINEs),源自 7SL RNA 基因,在人类基因组 DNA 中存在超过一百万份拷贝。Alu 通过一种称为逆转录转座的机制移动,该机制需要长散布元件-1 (LINE-1) ORF2 编码的蛋白 (ORF2p)。在这里,我们证明 HeLa 株系在支持 Alu 逆转录转座的能力上有所不同。人类 Alu 元件在 HeLa-HA 和 HeLa-CCL2(Alu 允许)株系中有效地逆转录转座,但在 HeLa-JVM 或 HeLa-H1(Alu 不允许)株系中不行。其他 7SL RNA 衍生的 SINEs 和 tRNA 衍生的 SINEs 的逆转录转座也呈现出类似的模式。相比之下,哺乳动物 LINE-1s、一种斑马鱼 LINE、一种人类 SINE-VNTR-Alu (SVA) 元件和一种含有 L1 ORF1 的 mRNA 可以在所有四种 HeLa 株系中逆转录转座。使用基于体外逆转录酶的测定,我们表明 Alu RNA 与 ORF2p 结合,并在 Alu 允许和 Alu 不允许的 HeLa 株系中转化为 cDNA,这表明 7SL 和 tRNA 衍生的 SINEs 使用与 SVA 元件和含有 ORF1 的 mRNA 不同的策略来“劫持”L1 ORF2p。这些数据进一步表明,ORF2p 与 Alu 允许和 Alu 不允许的 HeLa 株系中的 Alu RNA 聚 (A) 区结合,但 Alu 逆转录转座在 Alu 不允许的 HeLa 株系中这一关键步骤之后被阻断。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/484a422a6cfe/gkae448fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/41c69fec23a1/gkae448figgra1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/c56ea2f8f309/gkae448fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/8d5b3f23c13f/gkae448fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/f8855f065b47/gkae448fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/ac93e86db69d/gkae448fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/1c96bbbac983/gkae448fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/bdde7501986b/gkae448fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/484a422a6cfe/gkae448fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/41c69fec23a1/gkae448figgra1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/c56ea2f8f309/gkae448fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/8d5b3f23c13f/gkae448fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/f8855f065b47/gkae448fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/ac93e86db69d/gkae448fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/1c96bbbac983/gkae448fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/bdde7501986b/gkae448fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04fc/11260458/484a422a6cfe/gkae448fig7.jpg

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2
Long-read assembly of a Great Dane genome highlights the contribution of GC-rich sequence and mobile elements to canine genomes.对一只大丹犬基因组进行长读长组装,突出了 GC 丰富序列和转座元件对犬类基因组的贡献。
Proc Natl Acad Sci U S A. 2021 Mar 16;118(11). doi: 10.1073/pnas.2016274118.
3
LINE-1 ORF1p does not determine substrate preference for human/orangutan SVA and gibbon LAVA.
Nat Commun. 2025 May 9;16(1):4310. doi: 10.1038/s41467-025-59347-4.
4
Identification of a minimal domain required for retrotransposition.逆转录转座所需最小结构域的鉴定。
bioRxiv. 2024 Dec 16:2024.12.16.628748. doi: 10.1101/2024.12.16.628748.
5
Retrotransposon life cycle and its impacts on cellular responses.逆转录转座子的生命周期及其对细胞反应的影响。
RNA Biol. 2024 Jan;21(1):11-27. doi: 10.1080/15476286.2024.2409607. Epub 2024 Oct 13.
LINE-1 开放阅读框1蛋白(LINE-1 ORF1p)并不能决定人类/猩猩猿类短散布元件(SVA)和长臂猿猿类病毒元件(LAVA)的底物偏好性。
Mob DNA. 2020 Jul 11;11:27. doi: 10.1186/s13100-020-00222-y. eCollection 2020.
4
Pedigree-based estimation of human mobile element retrotransposition rates.基于家系的人类移动元件反转录转座率估计。
Genome Res. 2019 Oct;29(10):1567-1577. doi: 10.1101/gr.247965.118.
5
RNA ligation precedes the retrotransposition of U6/LINE-1 chimeric RNA.RNA 连接发生在 U6/LINE-1 嵌合 RNA 逆转录转座之前。
Proc Natl Acad Sci U S A. 2019 Oct 8;116(41):20612-20622. doi: 10.1073/pnas.1805404116. Epub 2019 Sep 23.
6
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7
Multi-omic measurements of heterogeneity in HeLa cells across laboratories.多组学测量 HeLa 细胞在不同实验室间的异质性。
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9
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