Drosophila Transgenesis
Drosophila Transgenesis - Related Videos
05:32
Embryo Microinjection for Transgenesis in Drosophila
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2024
This article takes the phiC31 integrase-mediated transgenesis in Drosophila as an example and presents an optimized protocol for embryo microinjection, a crucial step for creating transgenic flies.
07:23
Mosaic Zebrafish Transgenesis for Evaluating Enhancer Sequences
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Cited by 6 •
2010
We demonstrate our approach to finding potential enhancer elements from developmentally regulated genes and evaluating their function through mosaic zebrafish transgenesis.
08:51
Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
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Cited by 30 •
2016
Transgenic manipulations and genome editing are critical for functionally testing the roles of genes and cis-regulatory elements. Here a detailed microinjection protocol for the generation of genomic modifications (including Tol2-mediated fluorescent reporter transgene constructs, TALENs, and CRISPRs) is presented for the emergent model fish, the threespine stickleback.
06:57
RNAi Mediated Gene Knockdown and Transgenesis by Microinjection in the Necromenic Nematode Pristionchus pacificus
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Cited by 28 •
2011
In model organisms, transgenesis can manipulate gene functions while RNAi can knockdown specific mRNA transcripts 1-2. This protocol aims to illustrate the techniques needed to introduce stably transmitted DNA and transient double stranded RNA into the necromenic nematode Pristionchus pacificus for studies in evolutionary, developmental, and behavioral biology.
07:57
Thawing, Culturing, and Cryopreserving Drosophila Cell Lines
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Cited by 13 •
2019
Drosophila cell lines are important reagents for both fundamental and biomedical research. This article provides protocols for thawing, subculturing, and the cryopreservation of commonly used Drosophila cell lines to assist researchers in incorporating the use of these reagents in their research.
FAQs
The DNA construct is designed to carry a chosen genetic function, such as a fluorescent reporter, altered protein, or targeted genetic tool. After delivery to early embryos, insertion into the germline allows that engineered sequence to become part of the fly’s heritable genetic material. This connects molecular design with observable gene function, regulation, or inheritance.
P elements represent a transposon-based route, whereas site-specific integration provides another way to insert engineered DNA. The important distinction is that these are alternative integration strategies within the same experimental goal: placing a designed construct into the fly genome. Comparing them helps researchers select an approach suited to studying gene function, regulation, or inheritance.
A transgenic line can be designed to express a reporter, altered protein, or genetic tool in particular tissues and developmental stages. This control links the engineered construct to a defined biological context rather than treating expression as uniform throughout the animal. Researchers can therefore examine when and where a gene or genetic tool has an effect.
A typical workflow begins by designing the DNA construct and delivering it to early embryos. A transposon-based system, such as a P element, or a site-specific integration method then inserts the construct into the germline. Researchers identify transformed offspring and breed them to establish stable lines for subsequent studies of gene function, regulation, or inheritance.
Identifying transformed offspring distinguishes flies that received the engineered DNA from those that did not. Breeding the identified animals establishes stable lines in which the construct can be maintained for study. These lines provide a consistent genetic resource for examining reporter expression, altered proteins, or targeted genetic tools across relevant tissues and developmental stages.
Stable transgenic lines support investigations of development, behavior, disease mechanisms, and gene-environment interactions. Their value comes from connecting a defined DNA construct with effects that can be examined in the fly, including gene regulation, inheritance, tissue-specific expression, or developmental-stage-specific activity. This makes the approach useful across multiple areas of genetics research.