Heat differentiated complement factor profiling.
Författare
Summary, in English
Complement components and their cascade of reactions are important defense mechanisms within both innate and adaptive immunity. Many complement deficient patients still remain undiagnosed because of a lack of high throughput screening tools. Aiming towards neonatal proteome screening for immunodeficiencies, we used a multiplex profiling approach with antibody bead arrays to measure 9 complement proteins in serum and dried blood spots. Several complement components have been described as heat sensitive, thus their heat-dependent detectability was investigated. Using sera from 16 patients with complement deficiencies and 23 controls, we confirmed that the proteins C1q, C2, C3, C6, C9 and factor H were positively affected by heating, thus the identification of deficient patients was improved when preheating samples. Measurements of C7, C8 and factor I were negatively affected by heating and non-heated samples should be used in analysis of these components. In addition, a proof of concept study demonstrated the feasibility of labeling eluates from dried blood spots to perform a subsequent correct classification of C2-deficiencies. Our study demonstrates the potential of using multiplexed single binder assays for screening of complement components that open possibilities to expand such analysis to other forms of deficiencies.
Publiceringsår
2015
Språk
Engelska
Sidor
155-162
Publikation/Tidskrift/Serie
Journal of Proteomics
Volym
126
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Immunology in the medical area
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1874-3919