The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma

Background Interleukin-33 (IL-33) has been subject of extensive study in the context of inflammatory disorders, particularly in asthma. Many human biological samples, including serum, have been used to determine the protein levels of IL-33, aiming to investigate its involvement in asthma. Reliable...

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Main Authors: Ketelaar, M.E., Nawijn, Martijn C., Shaw, Dominick E., Koppelman, Gerard H., Sayers, Ian
Format: Article
Published: Wiley 2016
Online Access:https://eprints.nottingham.ac.uk/41685/
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author Ketelaar, M.E.
Nawijn, Martijn C.
Shaw, Dominick E.
Koppelman, Gerard H.
Sayers, Ian
author_facet Ketelaar, M.E.
Nawijn, Martijn C.
Shaw, Dominick E.
Koppelman, Gerard H.
Sayers, Ian
author_sort Ketelaar, M.E.
building Nottingham Research Data Repository
collection Online Access
description Background Interleukin-33 (IL-33) has been subject of extensive study in the context of inflammatory disorders, particularly in asthma. Many human biological samples, including serum, have been used to determine the protein levels of IL-33, aiming to investigate its involvement in asthma. Reliable methods are required to study the association of IL-33 with disease, especially considering the complex nature of serum samples. Objective We evaluated four IL-33 ELISA kits, aiming to determine a robust and reproducible approach to quantifying IL-33 in human serum from asthma patients. Methods IL-33 levels were investigated in serum of well-defined asthma patients by the Quantikine, DuoSet (both R&D systems), ADI-900-201 (Enzo Life Sciences), and SKR038 (GenWay Biotech Inc San Diego USA) immunoassays, as well as spiking experiments were performed using recombinant IL-33 and its soluble receptor IL-1RL1-a. Results We show that 1) IL-33 is difficult to detect by ELISA in human serum, due to lack of sensitivity and specificity of currently available assays; 2) human serum interferes with IL-33 quantification, in part through IL-1RL1-a; and 3) using non-serum certified kits may lead to spurious findings. Conclusion and Clinical Relevance If IL-33 is to be studied in the serum of asthma patients and other diseases, a more sensitive and specific assay method is required, which will be vital for further understanding and targeting of the IL-33/IL-1RL1 axis in human disease.
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spelling nottingham-416852020-05-04T17:50:13Z https://eprints.nottingham.ac.uk/41685/ The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma Ketelaar, M.E. Nawijn, Martijn C. Shaw, Dominick E. Koppelman, Gerard H. Sayers, Ian Background Interleukin-33 (IL-33) has been subject of extensive study in the context of inflammatory disorders, particularly in asthma. Many human biological samples, including serum, have been used to determine the protein levels of IL-33, aiming to investigate its involvement in asthma. Reliable methods are required to study the association of IL-33 with disease, especially considering the complex nature of serum samples. Objective We evaluated four IL-33 ELISA kits, aiming to determine a robust and reproducible approach to quantifying IL-33 in human serum from asthma patients. Methods IL-33 levels were investigated in serum of well-defined asthma patients by the Quantikine, DuoSet (both R&D systems), ADI-900-201 (Enzo Life Sciences), and SKR038 (GenWay Biotech Inc San Diego USA) immunoassays, as well as spiking experiments were performed using recombinant IL-33 and its soluble receptor IL-1RL1-a. Results We show that 1) IL-33 is difficult to detect by ELISA in human serum, due to lack of sensitivity and specificity of currently available assays; 2) human serum interferes with IL-33 quantification, in part through IL-1RL1-a; and 3) using non-serum certified kits may lead to spurious findings. Conclusion and Clinical Relevance If IL-33 is to be studied in the serum of asthma patients and other diseases, a more sensitive and specific assay method is required, which will be vital for further understanding and targeting of the IL-33/IL-1RL1 axis in human disease. Wiley 2016-05-26 Article PeerReviewed Ketelaar, M.E., Nawijn, Martijn C., Shaw, Dominick E., Koppelman, Gerard H. and Sayers, Ian (2016) The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma. Clinical & Experimental Allergy, 46 (6). pp. 884-887. ISSN 1365-2222 http://onlinelibrary.wiley.com/doi/10.1111/cea.12718/full doi:10.1111/cea.12718 doi:10.1111/cea.12718
spellingShingle Ketelaar, M.E.
Nawijn, Martijn C.
Shaw, Dominick E.
Koppelman, Gerard H.
Sayers, Ian
The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma
title The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma
title_full The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma
title_fullStr The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma
title_full_unstemmed The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma
title_short The challenge of measuring IL-33 in serum using commercial ELISA: lessons from asthma
title_sort challenge of measuring il-33 in serum using commercial elisa: lessons from asthma
url https://eprints.nottingham.ac.uk/41685/
https://eprints.nottingham.ac.uk/41685/
https://eprints.nottingham.ac.uk/41685/