Chapter title |
Investigating IL-1β Secretion Using Real-Time Single-Cell Imaging.
|
---|---|
Chapter number | 4 |
Book title |
NLR Proteins
|
Published in |
Methods in molecular biology, January 2016
|
DOI | 10.1007/978-1-4939-3566-6_4 |
Pubmed ID | |
Book ISBNs |
978-1-4939-3564-2, 978-1-4939-3566-6
|
Authors |
Catherine Diamond, James Bagnall, David G. Spiller, Michael R. White, Alessandra Mortellaro, Pawel Paszek, David Brough |
Editors |
Francesco Di Virgilio, Pablo Pelegrín |
Abstract |
The pro-inflammatory cytokine interleukin (IL)-1β is an important mediator of the inflammatory response. In order to perform its role in the inflammatory cascade, IL-1β must be secreted from the cell, yet it lacks a signal peptide that is required for conventional secretion, and the exact mechanism of release remains undefined. Conventional biochemical methods have limited the investigation into the processes involved in IL-1β secretion to population dynamics, yet heterogeneity between cells has been observed at a single-cell level. Here, greater sensitivity is achieved with the use of a newly developed vector that codes for a fluorescently labelled version of IL-1β. Combining this with real-time single-cell confocal microscopy using the methods described here, we have developed an effective protocol for investigating the mechanisms of IL-1β secretion and the testing of the hypothesis that IL-1β secretion requires membrane permeabilisation. |
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