报告员测定HPV16E1/E1C和E2mRNA拼接使用纳米化酶和分泌的化酶
Zixiao Jiang1, Yani Zhao2, Yunji Zheng3
1Department of Medical Biochemistry and Microbiology, Uppsala University, BMC-B9:3, 751 23 Uppsala, Sweden; School of Biomedical Engineering, Dalian University of Technology, Liaoning IC Technology Key Lab, 116024 Dalian, China.
Journal of virological methods
|January 31, 2026
概括
研究人员开发了新的记者等离子体来研究人类乳头瘤病毒16型 (HPV16) mRNA拼接. 这些工具揭示了SR蛋白和激酶抑制剂如何影响HPV16剪接,为病毒基因调节提供了洞察力.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 在RNA分离过程中.
背景情况:
- 人类乳头瘤病毒16型 (HPV16) 是一种重要的致癌病毒.
- 调控HPV16基因表达,特别是mRNA剪接,对于病毒生命周期和病原发生至关重要.
- 了解HPV16的替代拼接事件对于开发有针对性的抗病毒策略至关重要.
研究的目的:
- 为了生成和验证监测HPV16E2和E1CmRNA拼接的记者等离子体.
- 研究调节特定HPV16拼接部位的cis作用RNA元素和转作用因子.
- 为研究HPV16 E2 mRNA拼接动态建立一个细胞生物试验.
主要方法:
- 开发了两个记者等离子体:pE2sLuc (用于E2mRNA) 和pE1nLuc (用于E1CmRNA),分别使用分泌和纳米化酶记者.
- 构建一个稳定的C33A细胞系,其中包含HPV16记者等离子体pE1nLuc.
- 使用SR蛋白过度表达和泛Akt激酶抑制剂来扰乱拼接的实验操纵.
主要成果:
- 报告者等离子体成功监测了对HPV16拼接部位SA2709 (E2) 和SA2582 (E1C) 的拼接.
- 过度表达SR蛋白或使用泛-Akt激酶抑制剂的治疗将拼接从SA2709转移到SA2582.
- 这些干扰导致了增强的纳米化酶生产,验证了报告员系统的灵敏度.
结论:
- 开发的记者等离子体是研究HPV16mRNA拼接调节的有效工具.
- SR蛋白和Akt酶信号通路在调节HPV16替代拼接中发挥作用.
- 基于pE1nLuc的细胞系作为HPV16 E2mRNA拼接的有价值的生物试验,对理解病毒瘤发生有意义.
相关概念视频
Alternative RNA Splicing
25.2K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
25.2K
Pre-mRNA Processing: RNA Splicing
6.9K
6.9K
RNA Splicing
60.6K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
60.6K
Nuclear Export of mRNA
8.8K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
8.8K
Nonsense-mediated mRNA Decay
11.8K
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
11.8K
Regulated mRNA Transport
7.0K
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
7.0K


