Eosinophils pp 111-128 | Cite as

Eosinophil Shape Change and Secretion

  • Lian Willetts
  • Sergei I. Ochkur
  • Elizabeth A. Jacobsen
  • James J. Lee
  • Paige LacyEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1178)


The analysis of eosinophil shape change and mediator secretion is a useful tool in understanding how eosinophils respond to immunological stimuli and chemotactic factors. Eosinophils undergo dramatic shape changes, along with secretion of the granule-derived enzyme eosinophil peroxidase (EPX) in response to chemotactic stimuli including platelet-activating factor and CCL11 (eotaxin-1). Here, we describe the analysis of eosinophil shape change by confocal microscopy analysis and provide an experimental approach for comparing unstimulated cells with those that have been stimulated to undergo chemotaxis. In addition, we illustrate two different degranulation assays for EPX using OPD and an enzyme-linked immunosorbent assay technique and show how eosinophil degranulation may be assessed from in vitro as well as ex vivo stimulation.

Key words

Chemotaxis Platelet-activating factor Eotaxin Chemokine Confocal microscopy Secretion Degranulation Eosinophil peroxidase 



This work was supported by funding from an NSERC Discovery Grant and a CIHR operating grant (MOP 89748) to PL. We would like to acknowledge the outstanding support of our technician, Renjith Pillai, for assisting with experimental details.


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Copyright information

© Springer Science+Business Media, New York 2014

Authors and Affiliations

  • Lian Willetts
    • 1
  • Sergei I. Ochkur
    • 2
  • Elizabeth A. Jacobsen
    • 2
  • James J. Lee
    • 2
  • Paige Lacy
    • 3
    Email author
  1. 1.Pulmonary Research Group, Department of MedicineUniversity of AlbertaEdmontonCanada
  2. 2.Division of Pulmonary Medicine, Department of Biochemistry and Molecular BiologyMayo ClinicScottsdaleUSA
  3. 3.Pulmonary Research Group, 559 HMRC, Department of MedicineUniversity of AlbertaEdmontonCanada

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