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Published on: March 1, 2011
Measurement of interleukin-13
Angus Lauder1, Andrew N J McKenzie1
1MRC Laboratory of Molecular Biology, Cambridge, United Kingdom.
Quantitate interleukin-13 (IL-13) using two methods: a specific enzyme-linked immunosorbent assay (ELISA) for human IL-13 and a bioassay for both mouse and human IL-13. The bioassay requires neutralizing antibodies when other cytokines are present.
Area of Science:
- Immunology
- Cell Biology
Background:
- Interleukin-13 (IL-13) is a key cytokine involved in immune responses.
- Accurate quantification of IL-13 is crucial for research and diagnostics.
Purpose of the Study:
- To describe two distinct protocols for quantifying IL-13.
- To highlight the specificity and applicability of each method for different research needs.
Main Methods:
- Enzyme-linked immunosorbent assay (ELISA): Highly specific for human IL-13, does not cross-react with other cytokines.
- Bioassay: Utilizes the B9 plasmacytoma cell line's growth stimulation by IL-13, applicable to both mouse and human IL-13.
Main Results:
- ELISA provides specific detection of human IL-13 in complex samples.
- The bioassay demonstrates sensitivity to IL-13 but requires careful control for interfering cytokines like IL-4 and IL-6.
Conclusions:
- Both ELISA and bioassay are valuable tools for IL-13 quantification.
- Method selection depends on the presence of other cytokines and the species of origin.
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