Eye Disc Separation
Eye Disc Separation - Related Videos
14:33
Generation, Purification, and Characterization of Cell-invasive DISC1 Protein Species
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Cited by 13 •
2012
The generation, purification and cell invasion of intracellular, cytoplasmic full length DISC1 protein aggresomes from cell cultures and of a labeled, multimeric recombinant DISC1 protein fragment in E. coli are described. Cell invasiveness is shown for recipient cells in cell culture and for neurons in vivo after stereotactical brain inoculation.
08:02
Separation of Mixtures via Precipitation
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2023
Source: Laboratory of Dr. Ana J. García-Sáez — University of Tübingen Most samples of interest are mixtures of many different components. Sample preparation, a key step in the analytical process, removes interferences that may affect the analysis. As such, developing separation techniques is an important endeavor not just in academia, but also in industry. One way to separate mixtures is to use their solubility properties. In this short paper, we will deal with aqueous solutions. The...
07:29
Separating Protein with SDS-PAGE
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2023
Sodium Dodecyl Sulfate Poly-Acrylamide Gel Electrophoresis, or SDS-PAGE, is a widely-used technique for separating mixtures of proteins based on their size and nothing else. SDS, an anionic detergent, is used to produce an even charge across the length of proteins that have been linearized. By first loading them into a gel made of polyacrylamide and then applying an electric field to the gel, SDS-coated proteins are then separated. The electric field acts as the driving force, drawing the SDS...
08:06
Eye Movement Monitoring of Memory
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Cited by 10 •
2010
Eye movement monitoring (or eye tracking) reveals where in space the eyes linger, when and for how long. Here, we demonstrate how eye tracking can be used to investigate the integrity of memory in multiple participant populations, without requiring verbal, or otherwise explicit, reports.
08:17
Electrophoretic Separation of Proteins
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Cited by 29 •
2008
In this video, we demonstrate a method for electrophoretic separation of proteins using poly-acrylimide gel electrophoresis (PAGE).
FAQs
Boundary recognition distinguishes the eye imaginal disc from neighboring larval tissues and guides the dissection. This step helps the researcher release the intended tissue rather than removing an incomplete or mixed sample. Accurate separation is therefore important for preserving the disc’s organization, which supports reliable interpretation of later staining, culture, gene-expression, proliferation, or differentiation analyses.
The disc’s organization provides the structural context in which developmental patterning can be examined. Gentle release helps retain that context after neighboring attachments are removed. Maintaining the tissue in this state allows subsequent analyses to relate cellular features, gene expression, proliferation, and differentiation to the developing visual system rather than to a disrupted preparation.
Once separated, the tissue can be examined for gene expression and developmental changes associated with signaling pathways. Researchers can compare these readouts across differently prepared or genetically altered samples to investigate how signals influence eye formation. The isolated disc offers a focused preparation for connecting pathway activity with patterning, cell proliferation, and differentiation in the developing visual system.
Genetic mutations can be evaluated through their effects on gene expression, cell proliferation, and differentiation within the isolated disc. Comparing mutant and otherwise informative tissue preparations helps connect altered genetic activity with developmental outcomes. This makes the preparation useful for examining how genes contribute to patterning and the formation of the Drosophila visual system.
The workflow begins with dissected larval tissue and microscopic localization of the developing eye disc. Its boundaries are identified, and attached structures are gently released while the disc’s organization is preserved. After isolation, the tissue can be directed to fixation, staining, culture, or analytical workflows selected for the developmental question being investigated.
The isolated tissue can be fixed for preservation, stained to examine developmental features, or maintained in culture for further study. It can also be analyzed for gene expression, cell proliferation, and differentiation. Selecting among these options lets researchers examine structural, molecular, or cellular aspects of eye development using the same preparation.