Primary Macrophage Transfection
Primary Macrophage Transfection - Related Videos
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.
06:46
Highly Efficient Transfection of Primary Macrophages with In Vitro Transcribed mRNA
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Cited by 13 •
2019
Macrophages, especially primary macrophages, are challenging to transfect as they specialize in detecting molecules of non-self origin. We describe a protocol that allows highly efficient transfection of primary macrophages with mRNA generated from DNA templates such as plasmids.
03:05
In Vitro Culture and Differentiation of Primary Monocytes into Macrophages
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2025
This video demonstrates the priming of primary monocytes into macrophages. Primary human monocytes can be isolated and differentiated to an M1-like pro-inflammatory phenotype using the granulocyte-macrophage colony-stimulating factor (GM-CSF) or to an M2-like anti-inflammatory phenotype using the macrophage colony-stimulating factor (M-CSF).
12:55
Using the Gene Pulser MXcell Electroporation System to Transfect Primary Cells with High Efficiency
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Cited by 11 •
2010
This procedure shows how to use the Gene Pulser MXcell electroporation system to rapidly and easily identify the best electroporation conditions for mouse embryonic fibroblasts (MEFs) or other primary cells. Considerations for troubleshooting are also discussed in the associated video.
10:15
Small RNA Transfection in Primary Human Th17 Cells by Next Generation Electroporation
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Cited by 5 •
2017
Next generation electroporation is an efficient method for transfecting human Th17 cells with small RNAs to alter gene expression and cell behavior.
FAQs
Electroporation uses optimized physical delivery conditions to promote nucleic-acid entry, whereas lipid-based delivery relies on lipid-associated uptake. In primary macrophages, the choice is not simply about achieving expression: each approach must be adjusted to support cellular viability and preserve normal macrophage function. This balance determines whether observed effects reflect the intended genetic manipulation rather than excessive handling stress.
Macrophages are terminally differentiated and sensitive to manipulation, so delivery conditions directly influence experimental quality. Excessive stress can reduce viability or alter macrophage function, making changes in inflammatory signaling, phagocytosis, or antimicrobial responses difficult to interpret. Optimization therefore aims to achieve sufficient cellular uptake while retaining the physiological behaviors that make primary cells valuable.
Because macrophages can mount strong innate responses, the delivery process itself may influence the biology being measured. A change in reporter activity, inflammatory signaling, or antimicrobial behavior must therefore be interpreted alongside the need to preserve normal cell function. Optimized conditions help distinguish effects caused by altered gene expression from responses associated with nucleic-acid delivery.
A typical workflow begins with macrophages isolated directly from tissue or blood, followed by introduction of the selected DNA, RNA, or other nucleic acid using an optimized electroporation or lipid-based condition. Researchers then assess the resulting gene-expression change or functional readout, such as reporter activity, phagocytosis, inflammatory signaling, or antimicrobial response, while considering cell viability.
Optimization should focus on the balance between nucleic-acid uptake, cellular viability, and retained macrophage function. Conditions are considered suitable when they support the intended modification without compromising the physiologically relevant behaviors under study. This is especially important for primary cells, because their sensitivity and innate responsiveness can make poorly tolerated delivery conditions confound downstream immunology or infection measurements.
The approach can be used to examine host-pathogen interactions and to alter or monitor pathways involved in inflammatory signaling, phagocytosis, and antimicrobial responses. Gene knockdown can test the contribution of selected factors, while reporter assays track pathway activity. The same platform also supports evaluation of potential therapeutic targets in primary immune cells.