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RNA-Seq Analysis of Gene Expression, Viral Pathogen, and B-Cell/T-Cell Receptor Signatures in Complex Chronic Disease.

Authors
  • Bouquet, Jerome1
  • Gardy, Jennifer L2, 3
  • Brown, Scott4, 5
  • Pfeil, Jacob1
  • Miller, Ruth R3
  • Morshed, Muhammad6, 7
  • Avina-Zubieta, Antonio8
  • Shojania, Kam8
  • McCabe, Mark2
  • Parker, Shoshana9
  • Uyaguari, Miguel2
  • Federman, Scot1
  • Tang, Patrick10
  • Steiner, Ted11
  • Otterstater, Michael2, 3
  • Holt, Rob4
  • Moore, Richard4
  • Chiu, Charles Y1, 12
  • Patrick, David M2, 3
  • 1 Department of Laboratory Medicine, University of California, San Francisco, USA.
  • 2 Communicable Disease Prevention and Control Services, British Columbia Centre for Disease Control, Vancouver, BC, Canada. , (Canada)
  • 3 School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada. , (Canada)
  • 4 Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, 675 West 10th Avenue, Vancouver, BC, Canada. , (Canada)
  • 5 Genome Science and Technology Program, University of British Columbia, Vancouver, BC, Canada. , (Canada)
  • 6 British Columbia Centre for Disease Control Public Health Laboratory, 655 W 12th Ave., Vancouver, British Columbia, Canada. , (Canada)
  • 7 Department of Pathology and Laboratory Medicine, University of British Columbia, 2211 Wesbrook Mall, Vancouver, British Columbia, Canada. , (Canada)
  • 8 Department of Medicine, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada. , (Canada)
  • 9 Centre for Health Evaluation Outcome Sciences, Vancouver, Canada. , (Canada)
  • 10 Department of Pathology, Sidra Medical and Research Centre, Doha, Qatar. , (Qatar)
  • 11 Department of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver, Canada. , (Canada)
  • 12 Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, USA.
Type
Published Article
Journal
Clinical Infectious Diseases
Publisher
Oxford University Press
Publication Date
Feb 15, 2017
Volume
64
Issue
4
Pages
476–481
Identifiers
DOI: 10.1093/cid/ciw767
PMID: 28172519
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Chronic fatigue syndrome (CFS) remains poorly understood. Although infections are speculated to trigger the syndrome, a specific infectious agent and underlying pathophysiological mechanism remain elusive. In a previous study, we described similar clinical phenotypes in CFS patients and alternatively diagnosed chronic Lyme syndrome (ADCLS) patients—individuals diagnosed with Lyme disease by testing from private Lyme specialty laboratories but who test negative by reference 2-tiered serologic analysis. Here, we performed blinded RNA-seq analysis of whole blood collected from 25 adults diagnosed with CFS and 13 ADCLS patients, comparing these cases to 25 matched controls and 11 patients with well-controlled systemic lupus erythematosus (SLE). Samples were collected at patient enrollment and not during acute symptom flares. RNA-seq data were used to study host gene expression, B-cell/T-cell receptor profiles (BCR/TCR), and potential viral infections. No differentially expressed genes (DEGs) were found to be significant when CFS or ADCLS cases were compared to controls. Forty-two DEGs were found when SLE cases were compared to controls, consistent with activation of interferon signaling pathways associated with SLE disease. BCR/TCR repertoire analysis did not show significant differences between CFS and controls or ADCLS and controls. Finally, viral sequences corresponding to anelloviruses, human pegivirus 1, herpesviruses, and papillomaviruses were detected in RNA-seq data, but proportions were similar (P = .73) across all genus-level taxonomic categories. Our observations do not support a theory of transcriptionally mediated immune cell dysregulation in CFS and ADCLS, at least outside of periods of acute symptom flares. © The Author 2017. Published by Oxford University Press for the Infectious Diseases Society of America.

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