Lipid-based Transfection
Lipid-based Transfection - Related Videos
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...
02:57
Transfecting Primary Macrophages with Modified mRNA
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2025
This video demonstrates the process of transfecting primary macrophages with modified mRNA encoding green fluorescent protein. These modified mRNAs, designed to reduce immunogenicity and improve its stability, ensure the successful transfection and subsequent expression of green fluorescent proteins, which is confirmed through fluorescence microscopy.
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...
12:58
Transfecting RAW264.7 Cells with a Luciferase Reporter Gene
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Cited by 13 •
2015
Transfection into the macrophage cell line, RAW264.7, is difficult due to the cell’s natural response against foreign materials. We described here a gentle yet robust procedure for transfecting luciferase reporter genes into RAW264.7 cells.
04:21
Protein Transfection of Mouse Lung
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Cited by 1 •
2013
Transgenic mice or viral vectors have been used to increase protein expression within the lung. However, these techniques are time-consuming, technically challenging and have off-target effects that can confound results. Our protein transfection protocol uses a lipid based transfection reagent and an ultrafine microsprayer to uniformly deliver active protein to lung cells.
FAQs
Charged or ionizable lipids associate with DNA or RNA to form delivery complexes. Their lipid properties help the complexes interact with the cell membrane, which supports cellular uptake. This interaction is central to the technique because naked nucleic acids would not otherwise be positioned for the same membrane-associated entry process described for lipid-mediated delivery.
Endocytosis provides a route for lipid-nucleic acid complexes to move from the extracellular environment into cells. After uptake, the nucleic acid must be released inside the cell for its intended effect, such as changing gene expression or producing gene silencing. Thus, successful delivery depends on both internalization and intracellular release, not membrane contact alone.
The nucleic acid cargo determines the type of biological question the experiment can address. DNA can be used with genetic constructs to support expression studies, whereas RNA delivery can support gene-expression modulation or gene silencing. Selecting the cargo according to the intended outcome allows the same general delivery strategy to serve different molecular biology applications.
Lipid-based transfection can produce transient gene expression, gene silencing, or delivery of genetic constructs into cultured cells. These outcomes allow investigators to alter gene activity and examine resulting changes in cellular function. Because the effects support different experimental goals, the technique can be adapted to expression studies, functional investigations, and early testing of gene-based approaches.
A typical workflow begins by combining the selected DNA or RNA with suitable charged or ionizable lipids to form complexes. Researchers then introduce those complexes to cultured cells, allowing membrane interaction and uptake. Subsequent intracellular release makes the nucleic acid available for its intended function, after which gene expression or silencing can be investigated.
This approach is useful when researchers need a relatively simple way to alter gene activity in cultured cells. It can support transient expression experiments, gene-silencing studies, and delivery of genetic constructs. Those capabilities make it relevant for investigating cellular function, producing proteins, modeling disease-related biology, and performing preliminary evaluations of gene-based therapies.
In disease modeling, delivered nucleic acids can help researchers modify gene expression in cultured cells and examine cellular consequences. In gene-based therapy research, the method provides a preliminary way to evaluate genetic constructs or gene-silencing strategies before more advanced testing. Its value lies in connecting nucleic acid delivery with observable biological responses in cell-based systems.