Drosophila Injection
Drosophila Injection - Related Videos
08:30
RNAi Interference by dsRNA Injection into Drosophila Embryos
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Cited by 6 •
2011
RNA interference has been proven very effective to analyze gene function in Drosophila tracheal development. A detailed protocol used by Jiang lab to inject dsRNA into fly embryos to knockdown gene expression is illustrated. This technique has the potential for screening genes required for tissue and organ development in Drosophila.
05:52
Insulin Injection and Hemolymph Extraction to Measure Insulin Sensitivity in Adult Drosophila melanogaster
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Cited by 16 •
2011
Conserved insulin signaling pathways found in the fruit fly Drosophila melanogaster make this organism a potential tool for modeling metabolic disorders including type II diabetes. To this end, it is critical to establish physiological assays to effectively measure systemic insulin action in peripheral glucose disposal in the adult fly.
03:16
Drosophila melanogaster Larva Injection Protocol
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Cited by 1 •
2021
Drosophila melanogaster adult flies have been extensively utilized as model organisms to investigate the molecular mechanisms underlying host antimicrobial innate immune responses and microbial infection strategies. To promote the D. melanogaster larva stage as an additional or alternative model system, a larval injection technique is described.
11:12
Whole Mount Preparation of the Adult Drosophila Ventral Nerve Cord for Giant Fiber Dye Injection
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Cited by 21 •
2011
An in vivo dissection of the adult Drosophila ventral nerve cord (VNC) is demonstrated. This particular dissection method causes little damage to the VNC allowing the subsequent labeling of the giant fiber neurons with fluorescent dye for high resolution imaging.
03:23
Injection of Adult Drosophila Flies: A Method of Compound or Label Delivery
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2023
This video describes how to perform an injection of live adult flies and includes an example protocol in which labeled particles and trypan blue are injected in fly abdomens to assay phagocytosis.
FAQs
In early embryos, material delivered at the posterior pole can enter cells that contribute to the developing germline. This targeting connects an injection event with potential transmission of genetic changes to later generations. Consequently, posterior delivery is especially relevant when the goal is to establish modified fly lines rather than produce only a localized, short-term effect.
Microscopic control allows the operator to position a fine glass needle at a selected embryonic or tissue location, while controlled pressure regulates delivery of the introduced material. Together, these features support precise manipulation rather than unrestricted application. The combination is important because experimental outcomes depend on placing the substance where the intended genetic or biological process occurs.
The same delivery approach can introduce genetic material for transgenesis, components used in CRISPR-based gene editing, or other substances for functional experiments. These uses answer different questions: transgenesis can help generate modified lines, whereas functional studies can test how a gene or localized biological factor influences development or regulation. The technique therefore links manipulation with biological interpretation.
A typical workflow begins by selecting the appropriate embryos or tissue and preparing the substance to be delivered. The material is loaded into a fine glass needle, which is positioned under a microscope. Controlled pressure then introduces it at the chosen site, such as the posterior pole of an early embryo, for the intended downstream analysis.
Researchers may aim to create a modified fly line when introduced genetic material or editing reagents need to influence developing germline cells and support inherited changes. In contrast, delivery into a selected tissue can be used to examine a localized biological effect. This distinction helps align the injection target with whether the study requires inheritance or regional analysis.
Outcomes from these experiments can inform studies of inheritance, embryogenesis, gene regulation, development, and disease mechanisms. Modified lines provide a system for examining genetic changes across biological processes, while localized delivery can help test effects in a selected tissue. In biology research, the method therefore connects precise experimental manipulation with questions about gene function and organismal development.