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High-resolution Measurement of Odor-Driven Behavior in Drosophila Larvae
Published on: January 3, 2008
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Drosophila blood cell chemotaxis
Iwan Robert Evans1, Will Wood2
1Department of Infection and Immunity, The Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK; The Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK.
Current Opinion in Cell Biology
|May 7, 2014
Summary
Fruit fly hemocytes, the equivalent of vertebrate macrophages, migrate towards developmental cues and tissue damage. Key molecules controlling cell movement in vertebrates are conserved in these innate immune cells.
Area of Science:
- Developmental Biology
- Immunology
- Cell Biology
Background:
- Drosophila melanogaster possesses hemocytes, functionally analogous to vertebrate macrophages.
- These hemocytes exhibit directed migration during development and in response to tissue damage.
- Chemotaxis in hemocytes is regulated by PDGF/Vegf-related ligands and local hydrogen peroxide production.
Purpose of the Study:
- To investigate conserved molecular mechanisms of cell motility in Drosophila hemocytes.
- To understand the role of specific proteins in innate immune cell function.
- To elucidate signaling pathways involved in inflammation and immune competence.
Main Methods:
- Utilizing Drosophila melanogaster as a model organism.
- Analyzing conserved molecules involved in vertebrate cell motility, such as integrins, formins, Ena/VASP proteins, and the SCAR/WAVE complex.
- Investigating calcium signaling in response to damage signals and the role of ecdysone.
Main Results:
- Many vertebrate cell motility molecules, including integrins, formins, Ena/VASP proteins, and the SCAR/WAVE complex, are functionally conserved in Drosophila hemocytes.
- Damage signals activate hemocyte migration via calcium signaling during inflammation.
- The steroid hormone ecdysone enhances immune competence at critical developmental stages.
Conclusions:
- Drosophila hemocytes serve as a valuable model for studying innate immunity and cell migration.
- Conserved molecular pathways govern immune cell behavior across species.
- Developmental cues and damage signals orchestrate immune responses in Drosophila.
