Arterial immune protein expression demonstrates the complexity of immune responses in Kawasaki disease arteritis

S. A. Cameron*, S. M. White, D. Arrollo, S. T. Shulman, A. H. Rowley

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

A more complete understanding of immune-mediated damage to the coronary arteries in children with Kawasaki disease (KD) is required for improvements in patient treatment and outcomes. We recently reported the transcriptional profile of KD coronary arteritis, and in this study sought to determine protein expression of transcriptionally up-regulated immune genes in KD coronary arteries from the first 2 months after disease onset. We examined the coronary arteries of 12 fatal KD cases and 13 childhood controls for expression of a set of proteins whose genes were highly up-regulated in the KD coronary artery transcriptome: allograft inflammatory factor 1 (AIF1), interleukin 18 (IL-18), CD74, CD1c, CD20 (MS4A1), Toll-like receptor 7 (TLR-7) and Z-DNA binding protein 1 (ZBP1). Immunohistochemistry and immunofluorescence studies were performed to evaluate protein expression and co-localization, respectively. AIF1 was expressed transmurally in KD arteritis and localized to macrophages and myeloid dendritic cells. CD74, which interacts with major histocompatibility complex (MHC) class II on antigen-presenting cells, localized to the intima-media. CD1c, a marker of myeloid dendritic cells, was expressed in a transmural pattern, as were IL-18 and CD20. ZBP1 and TLR-7 were up-regulated compared to controls, but less highly compared to the other proteins. These findings provide evidence of antigen presentation and interferon response in KD arteritis. In combination with prior studies demonstrating T lymphocyte activation, these results demonstrate the complexity of the KD arterial immune response.

Original languageEnglish (US)
Pages (from-to)244-250
Number of pages7
JournalClinical and Experimental Immunology
Volume190
Issue number2
DOIs
StatePublished - Nov 2017

Keywords

  • AIF1
  • Kawasaki Diseas
  • coronary aneurysm

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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