Viral-mediated Transfection
Viral-mediated Transfection - Related Videos
03:11
Polyethylenimine-Mediated Transfection of Embryonic Kidney Cells for Recombinant Virus Production
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2026
Source: Van Lidth de Jeude, et al. A Protocol for Lentiviral Transduction and Downstream Analysis of Intestinal Organoids. J. Vis. Exp. (2015).This video demonstrates the process of producing viral particles through transfection of embryonic kidney cells with plasmid–polyethylenimine complexes, which leads to viral genome expression, particle assembly, and virus collection in the medium.
07:28
An Introduction to Transfection
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2023
Transfection is the process of inserting genetic material, such as DNA and double stranded RNA, into mammalian cells. The insertion of DNA into a cell enables the expression, or production, of proteins using the cells own machinery, whereas insertion of RNA into a cell is used to down-regulate the production of a specific protein by stopping translation. While the site of action for transfected RNA is the cytoplasm, DNA must be transported to the nucleus for effective transfection. There, the...
08:04
Neuronal Transfection Methods
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2023
Transfection - the process of transferring genetic material into cells - is a powerful tool for the rapid and efficient manipulation of gene expression in cells. Because this method can be used to silence the expression of specific proteins or to drive the expression of foreign or modified proteins, transfection is an extremely useful tool in the study of the cellular and molecular processes that govern neuron function. However, mature neurons have a number of properties that make them...
03:34
Assessing Caspase-Mediated Cleavage of Viral and Host Proteins in Virus-Infected Cells
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2025
The video demonstrates a method to assess caspase-mediated protein cleavage in virus-infected cells. Post-viral infection, caspases get activated and degrade various host cellular proteins and viral nucleoproteins while specific caspase inhibitors prevent this degradation, as confirmed by western blotting.
02:56
Electroporation-Mediated Transfection of Mouse Dorsal Root Ganglia to Promote Sensory Axon Regeneration
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2025
Source: Li, Q. et al. Investigating Mammalian Axon Regeneration: In Vivo Electroporation of Adult Mouse Dorsal Root Ganglion. J. Vis. Exp. (2018)This video demonstrates electroporation-mediated transfection of mouse DRG neurons to study axon regeneration. It outlines the steps for delivering nucleic acid constructs to DRG neurons, inducing sciatic nerve injury, and assessing axonal regeneration.
FAQs
After receptor binding, the vector enters the target cell and releases its DNA or RNA cargo. The resulting genetic material can remain episomal, meaning separate from host chromosomes, or integrate into the host genome, depending on the vector system. That distinction affects how the introduced sequence is maintained and how researchers interpret expression over time.
Vector design influences cell-type targeting, the amount of genetic material that can be carried, and the likelihood of immune responses. These variables must be considered together because a vector that efficiently reaches a cell population may still produce limited or difficult-to-interpret results if its cargo capacity is insufficient or if immune responses affect the experiment.
Cell-type targeting is especially important in neural experiments because neurons and glial cells can support different biological questions. Directing expression or disruption to the intended population helps connect a manipulated gene with a particular cellular role, while broader or less selective delivery can complicate interpretation of circuit, activity, or disease-related findings.
An experiment typically begins by matching an engineered vector and its DNA or RNA cargo to the target cell and research goal. The vector then binds cellular receptors, enters cells, and releases the cargo. Researchers evaluate whether the intended gene expression or disruption occurred, while accounting for vector design, immune responses, and cargo limits when interpreting results.
In neuroscience, this approach can label neural circuits or monitor cellular activity by enabling controlled genetic changes in selected neural cells. It also supports disease modeling, where researchers examine consequences of gene manipulation, and testing therapeutic strategies. These uses make delivery properties experimentally important because the observed neural outcome depends on where and how efficiently cargo is delivered.
Viral-mediated transfection can be used either to increase expression of a selected gene or to disrupt it, depending on the cargo and experimental design. This flexibility allows investigators to test whether changing a gene alters neural circuits, cellular activity, or disease models. Interpretation requires separating effects of the intended manipulation from effects associated with delivery itself.