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Isolation of Peritoneum-derived Mast Cells and Their Functional Characterization with Ca2+-imaging and Degranulation Assays
Published on: July 4, 2018
13.1K
Basic techniques to study FcεRI signaling in mast cells
Yuko Kawakami1, Toshiaki Kawakami
1Division of Cell Biology, La Jolla Institute for Allergy and Immunology, 9420 Athena Circle, San Diego, CA, 92037, USA.
Methods in Molecular Biology (Clifton, N.J.)
|November 13, 2014
Summary
This chapter details generating and genetically correcting mouse mast cells for allergy research. It covers assessing early activation events and confirming protein interactions in mast cell signaling pathways.
Area of Science:
- Immunology
- Cell Biology
- Molecular Biology
Background:
- Mast cells are key effector cells in allergic reactions, activated via the high-affinity IgE receptor (FcεRI).
- FcεRI aggregation triggers tyrosine phosphorylation and downstream signaling cascades within mast cells.
- Understanding mast cell activation is crucial for developing allergy treatments.
Purpose of the Study:
- To provide a comprehensive guide for generating and genetically modifying mouse mast cells.
- To outline methods for assessing early mast cell activation events.
- To detail techniques for confirming protein-protein interactions in mast cell signaling.
Main Methods:
- Generation of mast cells from mouse bone marrow progenitor cells.
- Genetic defect correction using retroviral transduction techniques.
- Assessment of early activation by measuring protein-tyrosine kinases (PTKs) and serine/threonine kinases (PS/TKs) like Akt, PKC, and JNK.
- Confirmation of protein-protein interactions via co-immunoprecipitation assays.
Main Results:
- Established protocols for generating and genetically manipulating mouse mast cells.
- Methods for quantifying early signaling events, including kinase activity.
- Demonstrated utility of co-immunoprecipitation for validating signal transduction pathways.
Conclusions:
- The described methods facilitate the study of mast cell function and allergic responses.
- Genetic manipulation and signaling analysis provide insights into FcεRI-mediated mast cell activation.
- These techniques are essential for dissecting complex mast cell signaling networks.
