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Reporter Genes
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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.
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Tagging and Fusion Proteins
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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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Ribosome Profiling
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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
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Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
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Prokaryotic Transcriptional Activators and Repressors
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The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...
Transcription of prokaryotic...
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可编程的蛋白质表达使用一个遗传编码的m6A传感器.
Bahjat F Marayati1, Matthew G Thompson2, Christopher L Holley3,4
1Department of Biochemistry, Duke University School of Medicine, Durham, NC, USA.
Nature biotechnology
|January 3, 2024
概括
研究人员开发了一种新的遗传编码传感器 (GEMS),可以实时跟踪N6-甲基氨酸 (m6A) RNA甲基化在活细胞内,帮助药物发现.
更多相关视频
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 生物技术是生物技术.
背景情况:
- N6-甲基氨酸 (m6A) 是一种流行的mRNA修饰,调节基因表达和细胞功能.
- m6A的失调与各种人类疾病有关,使得m6A甲基转移酶成为潜在的治疗点.
- 现有的m6A检测方法需要RNA隔离,并且缺乏活细胞的实时监测.
研究的目的:
- 开发一种用于实时检测活细胞中m6ARNA甲基化的新技术.
- 创建一个用于m6A检测和m6A依赖蛋白质递送的多功能平台.
主要方法:
- 开发一种基因编码的m6A传感器 (GEMS),将光与细胞mRNA甲基化联系起来.
- 使用GEMS监测m6A变化,以应对药物抑制m6A甲基转移酶.
主要成果:
- GEMS成功地提供了活细胞中mRNA甲基化水平的实时读数.
- 传感器检测到由甲基转移酶抑制剂诱导的m6A变化,在药物发现中显示出实用性.
- GEMS可以设计为m6A依赖的蛋白质有效载荷的输送.
结论:
- GEMS技术为m6A传感提供了一个多功能平台,可以通过简单的读取输出进行传感.
- 这个平台在药物发现和基于m6A水平的向蛋白质输送方面具有潜在的应用.


