Abstract
Live imaging of neutrophils within optically transparent larval zebrafish has proved a powerful technique to investigate how specific gene products control neutrophil function. To resolve whether a gene contributes to neutrophil function in a cell-autonomous manner necessitates a way to examine gene-deficient neutrophils in an otherwise wild type background. To this end, here we describe methods to harvest fluorescent neutrophils from larval donor zebrafish and transplant them into age-matched recipients. We show that transplanted neutrophils can survive in recipient larvae for at least 3 days providing ample opportunity for functional studies. Focusing on bactericidal activity, we show that transplanted neutrophils phagocytose and kill live bacteria with similar kinetics to nontransplanted neutrophils, indicating that the transplantation process does not influence these neutrophil effector functions. Following the methods described here to transplant neutrophils between gene-deficient and wild type larval zebrafish will enable investigations into whether a gene’s contribution to neutrophil function is cell-autonomous.
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Darroch, H., Astin, J.W., Hall, C.J. (2020). Isolation of Neutrophils from Larval Zebrafish and Their Transplantation into Recipient Larvae for Functional Studies. In: Quinn, M., DeLeo, F. (eds) Neutrophil. Methods in Molecular Biology, vol 2087. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0154-9_5
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DOI: https://doi.org/10.1007/978-1-0716-0154-9_5
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