产生和表征一种受他莫西芬诱导的CRE驱动鼠,用于微质中的转基因表达
Elliot J Glotfelty1, Lamarque M Coke1, Evan E Hart1,2
1Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD, 21224, USA.
Scientific reports
|December 9, 2025
概括
研究人员开发了一种新的转基因大鼠模型,用于研究微质细胞功能. 这种工具可以对小鼠的微质进行他莫西芬诱导的基因操纵,这对于理解大脑和行为至关重要.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 中枢神经系统的免疫细胞微质在健康和疾病中扮演着不同的角色.
- 开发用于微质细胞特定基因操纵的工具对于研究至关重要.
- 与小鼠相比,老鼠模型在研究复杂的行为和大脑功能方面具有优势.
研究的目的:
- 创建一种新的转基因大鼠模型,用于诱导微质细胞的基因操纵.
- 为了能够详细研究小鼠的微质功能,特别是在行为方面.
- 为研究中枢神经系统和外周免疫细胞功能的新工具提供.
主要方法:
- 使用BAC转基因产生了一个转基因老鼠 (Cx3cr1-CreERT2).
- 克雷特2复合酶受法克塔尔金C-X3-C基因化学因受体1 (Cx3cr1) 促剂的控制.
- 通过使用记者大鼠和流细胞计分析进行繁殖,证实了微质特异性和功能.
主要成果:
- 成功创建了一个由Cx3cr1促销器驱动的具有他莫西芬诱导的Cre表达的转基因大鼠.
- 证明了Cre表达的微质特异性,通过与Iba1.1的同位定位得到证实.
- 在微质细胞和外围免疫细胞中展示了时间和Cre依赖的重组.
结论:
- 已经建立了一个新的Cx3cr1-CreERT2转基因大鼠模型.
- 这种模型有助于在老鼠的微质中诱导他莫西芬的基因操纵.
- 该模型对于研究小鼠中的微质和外周免疫细胞功能有价值.
相关概念视频
00:53Transgenic Organisms
Overview
01:16In-vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
02:53Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
02:11Reporter 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...