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© Research
Publication : Clinical and experimental immunology

Discrimination of agonist and antagonist forms of CXCL10 in biological samples

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Clinical and experimental immunology - 01 Jan 2012

Casrouge A, Bisiaux A, Stephen L, Schmolz M, Mapes J, Pfister C, Pol S, Mallet V, Albert ML

Link to Pubmed [PMID] – 22132893

Clin. Exp. Immunol. 2012 Jan;167(1):137-48

The ready access to commercially available multiplex assays and the importance of inflammation in disease pathogenesis has resulted in an abundance of studies aimed at identifying surrogate biomarkers for different clinically important questions. Establishing a link between a biomarker and disease pathogenesis, however, is quite complex, and in some instances this complexity is compounded by post-translational modifications and the use of immunoassays that do not always discriminate between the different forms of the same protein. Herein, we provide a detailed description of an assay system that has been established to discriminate the agonist form of CXCL10 from the NH(2) -terminal truncated form of the molecule generated by dipeptidylpeptidase IV (DPP4) cleavage. We demonstrate the utility of this assay system for monitoring agonist and antagonist forms of CXCL10 in culture supernatant, patient plasma and urine samples. Given the important role of CXCL10 in chronic inflammatory diseases and its suggested role as a predictive marker in managing patients with chronic hepatitis C, asthma, atopic dermatitis, transplantation, tuberculosis, kidney injury, cancer and other diseases, we believe that our method will be of general interest to the research and medical community.

https://www.ncbi.nlm.nih.gov/pubmed/22132893