Lentivirus Overexpression
Lentivirus Overexpression - Related Videos
11:42
Lentivirus Production
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Cited by 54 •
2009
To make lentiviruses, DNA vectors are transfected into human 293 cells. After harvest and concentrating the supernatant, virus titer is determined by fluorescence expression with a flow cytometer.
08:12
Assessing Somatic Hypermutation in Ramos B Cells after Overexpression or Knockdown of Specific Genes
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Cited by 5 •
2011
We describe how to perform retroviral or lentiviral infections of overexpression or shRNA-containing constructs in the human Ramos B-cell line and how to measure somatic hypermutation in these cells.
09:06
Stereotactic Injection of MicroRNA-expressing Lentiviruses to the Mouse Hippocampus CA1 Region and Assessment of the Behavioral Outcome
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Cited by 23 •
2013
MicroRNAs have significant roles in brain structure and function. Here we describe a method to enforce hippocampal miRNA over-expression using stereotactic injection of an engineered miRNA-expressing lentivirus. This approach can serve as a relatively rapid way to assess the in vivo effects of over-expressed miRNAs in specific brain regions.
03:31
Generation of Recombinant Lentivirus in Mammalian Cells
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2026
Source: Zhang, Y., et al., Direct Reprogramming of Mouse Fibroblasts into Melanocytes. J. Vis. Exp. (2021)This video demonstrates the production and concentration of recombinant lentivirus in mammalian cells, enabling efficient gene delivery of transcription factors or other genetic elements for applications such as cellular reprogramming, functional studies, and potential therapeutic research.
11:34
Lentivirus-mediated Genetic Manipulation and Visualization of Olfactory Sensory Neurons in vivo
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Cited by 7 •
2011
We present a lentiviral technique for genetic manipulation and visualization of single olfactory sensory neuron axon and its terminal arborization in vivo.
FAQs
The method couples two events: lentiviral entry delivers an engineered expression cassette into target cells, and the delivered sequence can become integrated into the host genome. Once present, the cassette supports transcription of the selected gene, increasing production of its protein. This links vector-mediated delivery with sustained molecular manipulation in cell-based biology experiments.
When integration occurs, expression can persist after the initial delivery event, whereas transient transfection is used for temporary gene introduction. For Lentivirus Overexpression studies, sustained protein production allows researchers to follow gene effects over time rather than limiting measurements to an early expression window. This distinction is particularly relevant for genes that are difficult to introduce transiently.
An expression cassette is the vector-borne genetic unit that carries the selected gene for cellular production. Its presence creates a defined connection between delivery and increased protein output, allowing investigators to examine how elevated expression affects signaling, cellular phenotypes, or treatment responses. The cassette therefore connects molecular design with functional analysis in target cells.
Elevated protein production provides a way to test whether increasing a gene’s activity changes cell behavior. Investigators can examine downstream signaling pathways, cellular phenotypes, or responses to experimental treatments after introducing the selected gene. This makes the approach useful not only for assessing expression, but also for linking gene activity with measurable biological consequences.
A typical study begins by selecting a gene and incorporating it into an engineered lentiviral expression cassette. The vector is then delivered to target cells, where viral entry transfers the genetic material. Researchers subsequently assess increased protein production and examine relevant signaling, phenotypic, or treatment-related effects. This workflow progresses from gene delivery to functional readout.
Lentivirus Overexpression is particularly useful when investigators need gene activity to continue over an extended study period or when the gene is difficult to introduce through transient transfection. Sustained expression supports functional experiments that track cellular changes over time, including changes in signaling pathways, phenotypes, or responses to experimental treatments in cultured cells.
After delivery, researchers can relate increased production of the selected protein to changes in cellular signaling, observable phenotypes, and responses to experimental treatments. These measurements help evaluate gene function within cultured cells and can reveal whether altering expression influences particular biological processes. The resulting data provide a functional context for interpreting the introduced gene’s activity.