相关实验视频
Updated: Jul 3, 2025

10:25
Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
4.9K
控制人类乳头瘤病毒mRNA拼接-治疗的点的RNA元素?
Stefan Schwartz1, Chengjun Wu2, Naoko Kajitani1
1Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
Journal of medical virology
|February 16, 2024
概括
人类乳头瘤病毒 (HPV),特别是HPV16,导致全球癌症负担显著. 针对HPV16RNA拼接提供了一种针对这些感染和相关癌症的新疗法.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 人类乳头瘤病毒 (HPV) 是全球4.5%以上的癌症的原因,其中超过一半的病例涉及HPV16型 (HPV16).
- 虽然存在预防性疫苗,但对HPV感染缺乏有效的抗病毒药物,因此迫切需要确定新的治疗点.
- 替代RNA拼接是HPV (包括HPV16) 中基因表达的关键机制,精确的调节对于病毒功能至关重要.
研究的目的:
- 要总结目前对HPV16中调节病毒mRNA拼接的cis作用RNA元素的理解.
- 讨论与这些RNA元素相互作用的细胞转基因作用因子的作用.
- 探索利用HPV16RNA拼接作为HPV感染和癌症的治疗点的潜力.
主要方法:
- 对HPV16RNA拼接机制的现有研究进行审查和综合.
- 在HPV16mRNA中分析cis作用RNA元素.
- 研究病毒RNA元素与细胞拼接因子之间的相互作用.
主要成果:
- HPV16广泛使用替代RNA拼接来实现其基因表达.
- 在HPV16mRNA上,特定的cis作用RNA元素与细胞蛋白结合,精确地控制了拼接过程.
- 这种微妙的拼接机制的破坏可能导致改变mRNA水平或功能障碍的病毒转录.
结论:
- 乳头瘤病毒RNA拼接是一个敏感的过程,使其成为治疗干预的可行目标.
- 了解HPV16 cis作用RNA元素和细胞因子之间的相互作用是开发新型抗病毒策略的关键.
- 准HPV16RNA拼接是治疗HPV相关癌症和感染的有希望的途径.
相关概念视频
RNA Splicing
56.4K
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...
56.4K
Alternative RNA Splicing
21.2K
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...
21.2K
Leaky Scanning
5.1K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.1K
Regulation of Expression at Multiple Steps
907
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
907
Chromatin Structure Regulates pre-mRNA Processing
7.0K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
7.0K
Regulation of Expression Occurs at Multiple Steps
22.7K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
22.7K

