相关实验视频
Updated: Jul 11, 2026

11:48
Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
Published on: October 9, 2014
通过替代转录编码的竞争性HGF抗体的识别
A M Chan1, J S Rubin, D P Bottaro
1Laboratory of Cellular and Molecular Biology, National Cancer Institute, Bethesda, MD 20892.
概括
研究人员发现了一种较小的肝细胞生长因子 (HGF) 变体,可以抑制HGF.
科学领域:
- 分子生物学分子生物学
- 细胞信号传递 细胞信号传递
- 遗传学 是一个遗传学.
背景情况:
- 肝细胞生长因子 (HGF) 是一个关键的信号分子,参与细胞生长和发育.
- HGF通过与其受体c-Met结合来发挥其作用.
- 了解HGF的调节机制对于理解细胞增殖和组织再生至关重要.
研究的目的:
- 识别和表征自然存在的肝细胞生长因子 (HGF) 变体.
- 为了研究新发现的高杆菌变异的功能作用.
- 阐明这种变体与HGF受体 (c-Met) 相互作用的机制.
主要方法:
- 对替代HGF转录的分析.
- 评估HGF变种的菌性活性.
- 交叉链接研究以确定受体结合相互作用.
- 鉴定HGF受体作为c-Met原型瘤基因产物.
主要成果:
- 确定了一种天然存在的HGF变体,缺乏线粒体发生活性.
- 这种截断的HGF变体特别抑制了HGF诱导的线粒发生.
- 这种变异与本地HGF竞争,与c-Met受体结合.
- 同一个基因对增长因子及其对手进行编码.
结论:
- 一个单一的基因可以产生活跃的生长因子及其直接抑制剂.
- 这种HGF变体作为HGF信号传输的自然对手.
- 这一发现为调节HGF/c-Met通路提供了新的见解.
相关概念视频
RNA Splicing
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...
Alternative RNA Splicing
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...
Leaky Scanning
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 stands for...
Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Reporter Genes
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...
Commonly used reporter...
Alternative RNA Splicing
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...

