Integrated Transgene Detection
Integrated Transgene Detection - Related Videos
04:21
phiC31-Integrase-Mediated Site-Directed Transgene Integration: A Microinjection Technique for Site-Specific Transgene Integration into an Anopheles Vector
0 Views •
2025
In this video, we demonstrate phiC31-mediated site-specific transgene integration in the Anopheles embryo via microinjection. This method helps introduce desired genes into a host system for research and industrial applications.
09:48
Production of Transgenic Xenopus laevis by Restriction Enzyme Mediated Integration and Nuclear Transplantation
0 Views •
Cited by 8 •
2010
This video protocol demonstrates a method for generating transgenic Xenopus laevis by introduction of transgenes into sperm nuclei followed by nuclear transplantation into unfertilized eggs.
03:39
An In Vivo Assay to Detect Mitophagy in Transgenic Nematodes
0 Views •
2025
This video demonstrates an in vivo assay to study mitophagy in Caenorhabditis elegans. Upon exposing the nematodes to a mitophagy-inducing drug, the occurrence of mitophagy is assessed by co-localization between DCT-1, a mitophagy receptor on the damaged mitochondria, and the autophagosomal membrane protein LGG-1.
13:59
Assaying β-amyloid Toxicity using a Transgenic C. elegans Model
0 Views •
Cited by 76 •
2010
The intensely studied nematode worm Caenorhabditis elegans can be transgenically engineered to express the human β-amyloid peptide (Aβ). Induced expression of Aβ in C. elegans muscle leads to a rapid, reproducible paralysis phenotype that can be used to monitor treatments that modulate Aβ toxicity.
10:15
Generation of Transgenic C. elegans by Biolistic Transformation
0 Views •
Cited by 27 •
2010
Transgenic worms are commonly used in C. elegans research. Described is a simple, yet effective, protocol to introduce transgenes into worms using biolistic bombardment with DNA-coated gold particles. The effort involved and results of bombardment compare favorably with microinjection for the generation of transgenic animals.
FAQs
Junction-spanning PCR amplifies DNA that includes both the foreign sequence and adjacent host genomic DNA. This design provides evidence that the transgene is physically connected to the host genome rather than merely present as independently introduced DNA. Detecting these junction products helps validate genomic incorporation and supplies material for subsequent sequence-based characterization.
Sequencing identifies the DNA arrangement at the insertion boundary and confirms the corresponding genomic insertion site. It can reveal whether the transgene is intact and whether its placement matches the intended characterization of the engineered system. This information strengthens conclusions drawn from PCR alone and helps distinguish a verified genomic event from simple detection of transgene DNA.
Copy-number analysis estimates how many transgene copies are present, whereas expression assays evaluate whether the inserted sequence is functionally active. These measurements answer different questions: genomic abundance does not by itself establish activity. Considering both results helps researchers characterize engineered cells or organisms more completely and interpret whether the insertion contributes to the expected biological behavior.
Stable integration is supported when foreign DNA is shown to reside within the host genome through junction analysis and insertion-site confirmation. Transient uptake may produce detectable transgene DNA without the same genomic incorporation. Combining structural evidence with copy-number and expression measurements therefore helps separate temporary DNA presence from a persistent, functionally characterized modification.
A complementary workflow begins by detecting transgene–genome junctions with PCR, followed by sequencing to confirm the insertion site and DNA arrangement. Researchers can then estimate transgene copy number and assess expression to evaluate abundance and activity. Using these analyses together produces a stronger characterization than relying on a single measurement and supports quality control of engineered biological systems.
The approach is useful when researchers need to validate genetically modified cells, organisms, or biological models before interpreting experimental results. It supports gene-function studies, disease modeling, biotechnology, and quality control by showing whether an insertion is present, characterized, and functionally active. These outcomes help establish that a biological system has the intended genomic modification.