Macrophage Transfection
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.
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...
10:07
Investigation of Macrophage Polarization Using Bone Marrow Derived Macrophages
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Cited by 326 •
2013
The article describes a readily easy adaptive in vitro model to investigate macrophage polarization. In the presence of GM-CSF/M-CSF, hematopoietic stem/progenitor cells from the bone marrow are directed into monocytic differentiation, followed by M1 or M2 stimulation. The activation status can be tracked by changes in cell surface antigens, gene expression and cell signaling pathways.
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.
07:54
Highly Efficient Transfection of Human THP-1 Macrophages by Nucleofection
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Cited by 48 •
2014
This protocol presents an efficient and reliable method to transfect human THP-1 macrophages with siRNA or plasmid DNA by electroporation with high transfection efficiency while maintaining high cell vitality and full macrophage capacity for differentiation and polarization.
FAQs
Macrophages possess strong innate defenses that can limit nucleic-acid delivery and respond to manipulation by changing their activation state. Consequently, a successful experiment must evaluate more than whether DNA or RNA enters the cells. Researchers need to balance delivery efficiency with cell viability and activation, because excessive activation or cell loss can confound conclusions about immune and inflammatory functions.
Lipid-based carriers and electroporation provide alternative ways to temporarily facilitate nucleic-acid passage across the macrophage plasma membrane. Their shared purpose is to improve intracellular access, but each approach requires condition optimization in these defense-competent cells. Comparing delivery performance with viability and activation measurements helps researchers determine whether the resulting gene-expression changes reflect the intended manipulation rather than method-related stress.
The nucleic acid selected determines whether the experiment is designed to promote expression, produce silencing, or pursue another gene-regulation outcome. DNA and RNA therefore support different investigative goals within macrophage biology. Linking the chosen molecule to a clearly defined readout, such as cytokine production or phagocytosis, helps researchers interpret whether observed changes correspond to the targeted gene function.
Optimization must address three connected outcomes: delivery efficiency, cell viability, and macrophage activation. Improving entry alone is insufficient if the treatment reduces survival or changes the cells' inflammatory state. Experiments therefore need conditions that preserve viable macrophages while allowing the selected nucleic acid to alter gene expression or silence a target, producing results that more reliably represent macrophage biology.
A general workflow begins by selecting DNA, RNA, or another nucleic acid according to the intended expression or silencing experiment. Researchers then choose a delivery approach, such as a lipid-based carrier or electroporation, and optimize conditions for macrophage compatibility. Finally, they assess the resulting gene-regulation effect alongside viability and activation, then examine relevant cellular responses.
Macrophage transfection can support analysis of cytokine production, phagocytosis, and host-pathogen interactions after selected genes are expressed or silenced. These outcomes connect molecular manipulation with immune-cell behavior, allowing researchers to investigate how particular signaling pathways influence inflammation and defense. The method is especially useful when a gene's contribution must be examined within macrophage-specific cellular responses.
In medicine-related research, the approach helps examine how macrophage signaling contributes to infection, cancer, and inflammatory disorders. By altering selected genes and observing immune or inflammatory outcomes, investigators can study disease mechanisms and evaluate potential therapeutic targets. Its value extends beyond delivery itself: the resulting changes in macrophage behavior provide experimental evidence linking gene regulation with clinically relevant processes.