Cell Reports (Apr 2020)

Comprehensive Immunoprofiling of Pediatric Zika Reveals Key Role for Monocytes in the Acute Phase and No Effect of Prior Dengue Virus Infection

  • Daniela Michlmayr,
  • Eun-Young Kim,
  • Adeeb H. Rahman,
  • Rohit Raghunathan,
  • Seunghee Kim-Schulze,
  • Yan Che,
  • Selim Kalayci,
  • Zeynep H. Gümüş,
  • Guillermina Kuan,
  • Angel Balmaseda,
  • Andrew Kasarskis,
  • Steven M. Wolinsky,
  • Mayte Suaréz-Fariñas,
  • Eva Harris

Journal volume & issue
Vol. 31, no. 4

Abstract

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Summary: Zika virus (ZIKV) is an emerging, mosquito-borne flavivirus responsible for recent epidemics across the Americas, and it is closely related to dengue virus (DENV). Here, we study samples from 46 DENV-naive and 43 DENV-immune patients with RT-PCR-confirmed ZIKV infection at early-acute, late-acute, and convalescent time points from our pediatric cohort study in Nicaragua. We analyze the samples via RNA sequencing (RNA-seq), CyTOF, and multiplex cytokine/chemokine Luminex to generate a comprehensive, innate immune profile during ZIKV infection. Immunophenotyping and analysis of cytokines/chemokines reveal that CD14+ monocytes play a key role during ZIKV infection. Further, we identify CD169 (Siglec-1) on CD14+ monocytes as a potential biomarker of acute ZIKV infection. Strikingly distinct transcriptomic and immunophenotypic signatures are observed at all three time points. Interestingly, pre-existing dengue immunity has minimal impact on the innate immune response to Zika. Finally, this comprehensive immune profiling and network analysis of ZIKV infection in children serves as a valuable resource. : At three time points after Zika virus infection, Michlmayr et al. perform comprehensive immunoprofiling of pediatric cohort samples via RNA-seq, CyTOF, and Luminex cytokine/chemokine array, resulting in distinct temporal patterns of gene expression, cell profiles, and cytokines/chemokines. They show CD14+ monocytes play a central role, identify CD169 as a potential biomarker of acute ZIKV infection along with upregulation of CXCL10, and find no impact of prior dengue virus infection on the innate immune response to Zika. Keywords: Zika virus, monocytes, dengue virus, innate immunity, immune profiling, RNA-seq, CyTOF, network model, biomarker, Luminex