Live Imaging Hemocytes
Live Imaging Hemocytes - Related Videos
08:35
Live Imaging Of Drosophila melanogaster Embryonic Hemocyte Migrations
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Cited by 26 •
2010
Drosophila hemocytes disperse over the entirety of the developing embryo. This protocol demonstrates how to mount and image these migrations using embryos with fluorescently labelled hemocytes.
02:35
High-Resolution Confocal Imaging of Pathogen-Infected Drosophila Hemocytes
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2026
Source: Hiroyasu, A., et al. Extraction of Hemocytes from Drosophila melanogaster Larvae for Microbial Infection and Analysis. J. Vis. Exp. (2018)This video demonstrates high-resolution confocal imaging of Drosophila melanogaster hemocytes infected with Coxiella burnetii to visualize pathogen localization in 3D, enabling detailed analysis of intracellular infection dynamics and host-pathogen interactions.
02:19
A Hemocyte Disturbance Assay to Assess Hemocyte Re-Adhesion to Hematopoietic Pockets
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2025
This video demonstrates the hemocyte disturbance assay, evaluating hemocyte re-adhesion in Drosophila larvae's hematopoietic pockets. Mechanical disturbance releases resident hemocytes, elevating circulating hemocyte counts. Post-recovery, re-adherence of resident hemocytes is confirmed, illustrating reversibility.
11:49
Methods to Examine the Lymph Gland and Hemocytes in Drosophila Larvae
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Cited by 5 •
2016
Drosophila and mammalian hematopoietic systems share many common features, making Drosophila an attractive genetic model to study hematopoiesis. Here we demonstrate dissection and mounting of the major larval hematopoietic organ for immunohistochemistry. We also describe methods to assay various larval hematopoietic compartments including circulating hemocytes and sessile crystal cells.
04:20
Larval Lymph Gland Dissection: Isolating the Drosophila Hemocyte-Producing Organ
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2023
This video describes the Drosophila lymph gland—the primary site of hematopoiesis in the fly larva—and shows an example protocol to dissect and mount the organ for immunohistochemistry and fluorescent imaging.
FAQs
Live imaging can distinguish hemocyte migration, adhesion, phagocytosis, and interactions with pathogens or damaged cells as separate, observable behaviors. Following these events in the same living preparation helps connect movement and tissue contact with innate immune activity. It also reveals how hemocytes coordinate over time, providing a behavioral view of host defense rather than only a final cellular snapshot.
Fluorescent labels make hemocytes visible within a living organism or tissue, while time-lapse microscopy records their positions and behaviors across successive moments. Together, these tools allow researchers to follow recruitment, directional movement, tissue adhesion, and cellular interactions as they occur. The resulting sequence supports analysis of dynamic immune responses that would be difficult to infer from a single image.
A time-resolved view preserves the progression of hemocyte behavior, including when cells migrate, attach to tissues, engage pathogens, or participate in wound repair. Fixed-tissue methods can show where cells are located at one point, but they cannot directly reveal the direction, speed, recruitment, or coordination that produced that arrangement. Live imaging therefore links cellular location with immune activity over time.
A basic workflow places fluorescently labeled hemocytes in a living organism or tissue and uses time-lapse microscopy to record their behavior under changing conditions. Researchers then follow cell movement, tissue adhesion, phagocytosis, and interactions with pathogens or damaged cells. This workflow produces a chronological record that can be examined alongside immune responses, inflammation, or wound-repair events.
Recordings can provide quantitative measures of hemocyte speed, direction, recruitment, and coordination over time. These measurements help describe how rapidly cells move, where they travel, how they are brought to a relevant tissue or event, and how their behaviors relate to one another. Such outcomes convert visual observations into dynamic evidence about cellular participation in innate immunity.
Live imaging hemocytes supports investigations of host defense, inflammation, development, disease, and wound repair. It is particularly useful when the research question concerns changing cellular behavior rather than cell presence alone. By connecting hemocyte movement and interactions with biological events in living systems, the method helps researchers examine how innate immune processes unfold within tissues over time.