Intracellular cytokine detection based on flow cytometry in hemocytes from Galleria mellonella larvae: A new protocol

Invertebrates are becoming increasingly popular models for research on the immune system. The innate immunity possessed by insects shows both structural and functional similarity to the resistance displayed by mammals, and many processes occurring in insect hemocytes are similar to those that occur...

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Bibliographic Details
Published in:PloS one 2022-09, Vol.17 (9), p.e0274120-e0274120
Main Authors: Wronska, Anna Katarzyna, Kaczmarek, Agata, Sobich, Justyna, Grzelak, Sylwia, Bogus, Mieczyslawa Irena
Format: Article
Language:English
Subjects:
Analysis
Antibodies
Bees
Biology and Life Sciences
Butterflies & moths
Cells
Centrifugation
Cytokines
Disintegration
Evaluation
Flow cytometry
Galleria mellonella
Genomes
Granulocytes
Health aspects
Hemocytes
Immune system
Immunology
Innate immunity
Insect cells
Insects
Intracellular
Invertebrates
Lab Protocol
Larvae
Mammalian cells
Mammals
Medicine and Health Sciences
Methods
Microscopy
Proteins
Protocol
Research and Analysis Methods
Structure-function relationships
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Summary:Invertebrates are becoming increasingly popular models for research on the immune system. The innate immunity possessed by insects shows both structural and functional similarity to the resistance displayed by mammals, and many processes occurring in insect hemocytes are similar to those that occur in mammals. However, the use of insects as research models requires the development of methods for working with hemocytes. The aim of this study was to develop a protocol for intracellular cytokine detection in Galleria mellonella larvae hemocytes based on flow cytometry. It describes the anticoagulant composition of the buffer, the optimal conditions for hemocyte permeabilization and fixation, as well as the conditions of cell centrifugation to prevent cell disintegration. A key element is the selection of staining conditions, especially the length of the incubation time with the primary antibody, which turned out to be much longer than recommended for mammalian cells. The development of these individual steps allowed for the creation of a reproducible protocol for cytokine detection using flow cytometry in wax moth hemocytes. This will certainly facilitate the development of further protocols allowing for wider use of insect cells in immunological research.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0274120