Transfection Complex
Transfection Complex - 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...
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...
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.
11:42
High Yield Expression of Recombinant Human Proteins with the Transient Transfection of HEK293 Cells in Suspension
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Cited by 77 •
2015
Laboratory-scale production of eukaryotic proteins with appropriate post-translational modification represents a significant barrier. Here is a robust protocol with rapid establishment and turnaround for protein expression using a mammalian expression system. This system supports selective amino acid, selective labeling of proteins and small molecule modulators of glycan composition.
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
Positive charges allow carrier materials to associate with negatively charged nucleic acids and help the resulting assembly interact with the cell membrane. This interaction supports attachment and cellular uptake, while packaging can shield the nucleic acid during delivery. The balance between cargo association and membrane interaction therefore affects how effectively genetic material reaches the cell interior.
Cellular uptake alone does not ensure that DNA, RNA, or small interfering RNA can influence gene activity. The cargo must become available inside the cell after delivery. Intracellular release connects uptake with the intended biological outcome, such as gene expression, gene silencing, or genome-editing analysis, making release a central part of transfection performance.
The carrier material and its association with the nucleic acid can influence delivery efficiency and cell viability. Lipids, polymers, and other carriers may produce assemblies with different delivery behaviors, while preparation conditions can further affect performance. Because these factors alter both cellular response and cargo delivery, composition must be considered when comparing experimental outcomes.
The nucleic acid cargo determines the biological purpose of the experiment. DNA can support controlled gene expression, whereas RNA-based cargo can be used for gene expression studies or gene silencing, including applications with small interfering RNA. In each case, the carrier must package the selected cargo and support its intracellular availability for the intended study.
Preparation should consistently control how the selected nucleic acid associates with the carrier material, because composition and assembly influence delivery efficiency, cell viability, and reproducibility. Researchers should therefore apply the same preparation approach across comparable experiments and document relevant formulation choices. Consistency helps distinguish biological effects from variation introduced during complex formation.
They are used when researchers need to alter gene activity in cultured cells. Depending on the cargo, experiments can examine controlled gene expression, gene silencing, or genome editing. This makes the approach useful for studying gene function and for evaluating research-based therapeutic strategies in a cellular setting.
Researchers can assess whether the delivered cargo produces the intended cellular effect, while also considering delivery efficiency and cell viability. Experimental interpretation should include reproducibility because similar preparations need to generate comparable results across studies. Together, these measures indicate whether the complex performed effectively and whether the findings can support further biological investigation.