Tet Activation
Tet Activation - Related Videos
03:27
Inducible Tet-On Regulatable System-Based Gene Expression In Vivo: A Tetracycline-Induced Gene Expression System for Target Gene Transcription Activation in Mouse Model
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2025
This video demonstrates the tetracycline, or Tet-On, gene expression system in a mouse model. In the presence of doxycycline, a tetracycline derivative, the Tet-On system consisting of reverse tetracycline-controlled transactivator protein becomes activated and expresses the gene of interest.
09:51
Generation of Stable Human Cell Lines with Tetracycline-inducible (Tet-on) shRNA or cDNA Expression
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Cited by 16 •
2013
A rapid and simple way to generate human cell lines with inducible and reversible cDNA overexpression or shRNA-mediated knock-down of the gene of interest. This method enables researchers to reliably and highly reproducibly manipulate cell lines that are difficult to alter by transient transfection methods or conventional knockdown/knockout strategies.
06:19
Inducible Tet-Off Regulatable System: An In Vitro Method to Modulate Gene Expression in Cultured Cells Using Tetracycline-Off System
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2025
This video describes the method of regulating gene expression in cultured cells by transfection with a plasmid containing a gene of interest and a regulatory plasmid. The expression of this plasmid can be controlled by tetracycline or its synthetic analogs, making this system a useful model to study regulatable gene expression.
10:12
Monitoring Electroporation-Induced Changes in Action Potential Generation in Genetically Engineered Tet-On Spiking HEK cells
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Cited by 1 •
2024
For studying responses of excitable cells in vitro, the protocol describes optical monitoring of changes in action potential generation due to electroporation on a simple excitable cell model of genetically engineered tet-on spiking HEK cells as well as changes in transmembrane voltage with automated extraction of relevant parameters.
09:30
Measurement of Larval Activity in the Drosophila Activity Monitor
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Cited by 10 •
2015
This report describes a method for measuring Drosophila larval activity using the TriKinetics Drosophila Activity Monitor. The device employs infrared beams to detect movements of up to 16 individual animals. Data can be analyzed to represent motion parameters including rates and the positions of the animals within the assay chambers.
FAQs
The process begins when activated TET proteins oxidize 5-methylcytosine, or 5mC, into 5-hydroxymethylcytosine and then into further oxidized forms. These chemical changes can support active DNA demethylation through base-excision repair, in which modified DNA is replaced, or contribute to passive demethylation when modified marks are progressively lost during DNA replication.
Active demethylation can remove methylation through base-excision repair, whereas passive demethylation occurs through the loss of modified methylation marks during DNA replication. Their distinction matters because one relies on a repair-associated process and the other depends on cell division. Consequently, the relationship between TET activity, replication, and repair can influence how gene-expression patterns change.
By altering methylated cytosine through successive oxidation steps, TET activity can help establish gene-expression patterns that differ among cell types. This regulation is especially relevant during development, when cells acquire specialized identities, and during cellular reprogramming, when existing expression states are reorganized. The resulting epigenetic changes connect DNA modification with shifts in developmental potential.
The route depends on whether oxidized methylation is processed through base-excision repair or becomes diluted as DNA replicates. Thus, repair-associated processing and replication status are central conditions influencing the outcome. Considering both routes helps geneticists interpret TET-associated changes without assuming that every reduction in methylation reflects the same underlying molecular event.
Studies can examine how stimulating TET enzymes changes the progression from 5-methylcytosine to 5-hydroxymethylcytosine and further oxidized forms, then relate those changes to gene-expression patterns. Researchers may also compare effects during development or cellular reprogramming, where epigenetic states are being established or reorganized. These approaches connect molecular modification with cellular identity and function.
Abnormal TET activity can interfere with the epigenetic regulation needed for appropriate cellular differentiation. In genetics and epigenetics, this makes TET disruption relevant to studies of abnormal differentiation and disease. Investigators can therefore use TET-related mechanisms to examine how altered DNA methylation control contributes to pathological states and to explore potential therapeutic strategies.