Drosophila Screening
Drosophila Screening - Related Videos
08:20
RNAi Screening for Host Factors Involved in Vaccinia Virus Infection using Drosophila Cells
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Cited by 10 •
2010
Novel host factors involved in viral infection can be identified through cell-based genome-wide loss of function RNAi screening. A Drosophila cell culture model is particularly amenable to this approach due to the ease and efficiency of RNAi. Here we demonstrate this technique using vaccinia virus as an example.
03:48
Screening for Genomic Modifications: A Method to Identify CRISPR-Generated Mutants in Drosophila
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2023
This video describes a screening method to identify transgenic Drosophila flies, whose genome was modified using CRISPR-Cas9. CRISPR-Cas9 is a powerful genome-editing tool that revolutionized the way scientists can manipulate an organism's genome. In the example protocol, we will see how to identify CRISPR-generated mutants, in which an insertion of a transactivation sequence replaces the first exon of the branchless (bnl) gene, thus creating a bnl gene-specific driver line, bnl-LexA.
13:48
Live Dissection of Drosophila Embryos: Streamlined Methods for Screening Mutant Collections by Antibody Staining
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Cited by 30 •
2009
We describe a streamlined protocol for generating "fillet" preparations of Drosophila embryos of specific genotypes. This protocol allows efficient execution of a variety of genetic screens. It also allows excellent visualization of structures in the late embryo.
06:22
A Screening Method for Identification of Heterochromatin-Promoting Drugs Using Drosophila
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Cited by 1 •
2020
Drosophila is a widely used experimental model suitable for screening drugs with potential applications for cancer therapy. Here, we describe the use of Drosophila variegated eye color phenotypes as a method for screening small-molecule compounds that promote heterochromatin formation.
09:16
An Introduction to Drosophila melanogaster
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2023
Drosophila melanogaster, also known as the fruit fly, is a powerful model organism widely used in biological research that has made significant contributions to the greater scientific community over the last century. First, this video introduces the fruit fly as an organism, including its physical characteristics, life cycle, environment, and diet. Next, the reasons why fruit flies make an excellent model organism are discussed. For example, fruit flies are inexpensive to maintain in the...
FAQs
Researchers begin with fly populations carrying defined mutations or introduce additional genetic perturbations, then compare observable outcomes across the resulting groups. Differences in development, behavior, fertility, or survival provide evidence that the altered gene influences the trait under study. This genotype-to-phenotype relationship helps identify genes and pathways associated with normal biology or disease-related processes.
Drosophila combines well-characterized genetics with a short generation time, allowing researchers to examine inherited effects efficiently across generations. Its conserved cellular pathways make findings relevant to broader biological questions, including development, neurobiology, aging, and disease mechanisms. The fly therefore provides a practical system for connecting genetic changes with cellular or organism-level outcomes before testing ideas in more complex models.
The outcome depends on the type of mutation or perturbation introduced, the biological trait selected for scoring, and whether the challenge is genetic or environmental. Researchers may assess development, behavior, fertility, or survival, with each readout revealing a different consequence of the perturbation. Selecting an outcome that matches the biological question is therefore central to interpreting the screen.
Genetic screens alter or select fly populations according to defined mutations or genetic interactions, whereas compound screens examine responses to candidate chemical treatments. The first approach helps reveal genes and pathways linked to a trait; the second can identify compounds associated with disease-related processes or therapeutic potential. Both rely on measurable phenotypic outcomes to prioritize candidates for further investigation.
A typical workflow selects or generates fly populations with defined genetic features, applies a genetic or environmental perturbation, and scores a relevant phenotype. Researchers may record changes in development, behavior, fertility, or survival, then relate those outcomes to the altered gene, pathway, or tested compound. The resulting associations guide selection of candidates for additional study.
This approach is valuable when researchers need to connect genes, pathways, or compounds with observable biological outcomes in an efficient experimental system. It supports investigations spanning development, neurobiology, aging, and disease mechanisms. Compound-based studies are especially useful when the goal is to discover candidate therapeutics, while genetic screens can expose relationships among genes and pathways.
Screening outcomes can identify candidate genes, pathways, compounds, and genetic interactions associated with a selected phenotype. Patterns in development, behavior, fertility, or survival help prioritize which relationships merit deeper investigation. Because the fly has conserved cellular pathways, these results can provide a biologically informed starting point for follow-up studies in more complex models, without replacing those later investigations.