Stable Transgenic Lines
Stable Transgenic Lines - Related Videos
12:09
Generation of Stable Transgenic C. elegans Using Microinjection
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Cited by 92 •
2008
This video demonstrates the technique of microinjection into the gonad of C. elegans to create transgenic animals.
02:16
Differentiating Non-Transgenic and Transgenic Human Pluripotent Stem Cells into Neural Progenitor Cells
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2025
This video demonstrates the generation of neural progenitor cells from non-transgenic and transgenic human pluripotent stem cells (hPSCs). hPSCs are differentiated into neural progenitor cells using a neuronal differentiation medium. While differentiation is induced in non-transgenic cells using small molecules, the transgenic hPSCs are differentiated by adding an antibiotic that induces the promoter for a neuronal differentiation-specific transcription factor.
10:15
Generation of Transgenic C. elegans by Biolistic Transformation
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Cited by 27 •
2010
Transgenic worms are commonly used in C. elegans research. Described is a simple, yet effective, protocol to introduce transgenes into worms using biolistic bombardment with DNA-coated gold particles. The effort involved and results of bombardment compare favorably with microinjection for the generation of transgenic animals.
17:39
Microinjection of A. aegypti Embryos to Obtain Transgenic Mosquitoes
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Cited by 56 •
2007
In this video, Nijole Jasinskiene demonstrates the methodology employed to generate transgenic Aedes aegypti mosquitoes, which are vectors for dengue fever. The techniques for correctly preparing microinjection needles, dessicating embryos, and performing microinjection are demonstrated.
04:21
phiC31-Integrase-Mediated Site-Directed Transgene Integration: A Microinjection Technique for Site-Specific Transgene Integration into an Anopheles Vector
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2025
In this video, we demonstrate phiC31-mediated site-specific transgene integration in the Anopheles embryo via microinjection. This method helps introduce desired genes into a host system for research and industrial applications.
FAQs
Integration into the genome gives the introduced sequence a stable position within the organism’s inherited genetic material, allowing it to pass to descendants rather than remaining limited to the initially treated material. This inheritance is the mechanistic basis for examining the same introduced construct across generations and developing a consistent experimental system.
A defined expression pattern helps connect the activity of an introduced sequence with a biological question. When a transgenic line produces an engineered protein or fluorescent reporter in a reproducible pattern, researchers can relate the observed signal or protein activity to gene function, regulation, development, or disease processes rather than treating each observation as isolated.
Consistent transmission makes results comparable between generations. Once a line has been established, researchers can examine genetic effects over time using organisms that retain the introduced sequence, supporting reproducible studies of gene function and disease processes. The same inherited system also allows observations from different generations to be interpreted within a common experimental framework.
Fluorescent reporters and engineered proteins extend these lines beyond simply carrying an introduced DNA sequence. They provide observable or functional readouts that help researchers track cells, follow biological effects over time, and test hypotheses about gene activity. Their value comes from combining a heritable genetic system with a measurable signal or engineered function.
Establishing a line begins by introducing the transgene into embryonic cells or reproductive material. Researchers then identify individuals in which the construct has integrated into the genome and breed those individuals. This workflow converts an initial integration event into a heritable population suitable for experiments requiring a defined expression pattern and repeated observations.
Breeding extends an integration event into a maintained research resource. It allows researchers to obtain subsequent generations carrying the introduced sequence and evaluate whether transmission remains consistent. The resulting line supports experiments across time, rather than restricting analysis to the original organism or material used for introducing the transgene.
Stable transgenic lines are useful when a study must connect a genetic change with a biological outcome. Researchers apply them to investigate gene function and regulation, examine developmental processes, model disease-related effects, and monitor cells with fluorescent reporters. Because the construct is maintained, these questions can be revisited in a reproducible experimental system.