Abstract
Drosophila oogenesis is a powerful and tractable model for studies of cell and developmental biology due to the multitude of well-characterized events in both germline and somatic cells, the ease of genetic manipulation in fruit flies, and the large number of egg chambers produced by each fly. Recent improvements in live imaging and ex vivo culturing protocols have enabled researchers to conduct more detailed, longer-term studies of egg chamber development, enabling insights into fundamental biological processes. Here, we present a protocol for dissection, culturing, and imaging of late-stage egg chambers to study intercellular and directional cytoplasmic flow during “nurse cell dumping.” This critical developmental process towards the latter stages of oogenesis (stages 10b/11) results in rapid growth of the oocyte and shrinkage of the nurse cells and is accompanied by dynamic changes in cell shape. We also describe a procedure to record high-time-resolution movies of the flow of unlabeled cytoplasmic contents within nurse cells and through cytoplasmic bridges in the nurse cell cluster using reflection microscopy, and we describe two ways to analyze data from nurse cell dumping.
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Acknowledgments
This work was supported by NIH grant R01GM125646 to A.C.M. We would like to thank members of the Martin lab for helpful discussions regarding this project.
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Jackson, J.A., Imran Alsous, J., Martin, A.C. (2023). Live Imaging of Nurse Cell Behavior in Late Stages of Drosophila Oogenesis. In: Giedt, M.S., Tootle, T.L. (eds) Drosophila Oogenesis. Methods in Molecular Biology, vol 2626. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-2970-3_11
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DOI: https://doi.org/10.1007/978-1-0716-2970-3_11
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