Type I interferon as a biomarker in autoimmunity and viral infection: a leukocyte subset-specific analysis unveils hidden diagnostic options

Romy Strauß, Thomas Rose, Shaun M. Flint, Jens Klotsche, Thomas Häupl, Markus Peck-Radosavljevic, Taketoshi Yoshida, Chieko Kyogoku, Alexandra Flechsig, Amy M. Becker, Kathryn H. Dao, Andreas Radbruch, Gerd Rüdiger Burmester, Paul A. Lyons, Laurie S. Davis, Falk Hiepe, Andreas Grützkau, Robert Biesen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Abstract: Interferon alpha and its surrogates, including IP-10 and SIGLEC1, paralleled changes of disease activity in systemic lupus erythematosus (SLE). However, the whole blood interferon signature (WBIFNS)—the current standard for type I IFN assessment in SLE—does not correlate with SLE disease activity in individual patients over time. The underlying causes for this apparent contradiction have not been convincingly demonstrated. Using a multicenter dataset of gene expression data from leukocyte subsets in SLE, we identify distinctive subset-specific contributions to the WBIFNS. In a subsequent analysis, the effects of type I interferon on cellular blood composition in patients with SLE and hepatitis B were also studied over time. We found that type I interferon mediates significant alterations in whole blood composition, including a neutropenia and relative lymphocytosis. Given different effects of type 1 interferon on different leukocyte subsets, these shifts confound measurement of a type 1 interferon signature in whole blood. To minimize and overcome these limitations of the WBIFNS, we suggest to measure IFN-induced transcripts or proteins in a specific leukocyte subset to improve clinical impact of interferon biomarkers. Key messages: Myeloid cells contribute more to the WBIFNS in SLE than their lymphocytic counterpart.Very similar leukocyte subsets reveal distinctive IFN signatures.IFN alpha mixes up composition of blood and leads to a preferential neutropenia, yielding relative lymphocytosis.

Original languageEnglish
Pages (from-to)753-765
Number of pages13
JournalJournal of Molecular Medicine
Volume95
Issue number7
DOIs
StatePublished - 2017/07/01

Keywords

  • Biomarker
  • Disease activity
  • Systemic lupus erythematosus
  • Type I interferon

ASJC Scopus subject areas

  • Molecular Medicine
  • Drug Discovery
  • Genetics(clinical)

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