Comparison of tissue tropism and host response to enteric and respiratory enteroviruses

PLoS Pathog. 2022 Jul 5;18(7):e1010632. doi: 10.1371/journal.ppat.1010632. eCollection 2022 Jul.

Abstract

Enteroviruses (EVs) are among the most prevalent viruses worldwide. They are characterized by a high genetic and phenotypic diversity, being able to cause a plethora of symptoms. EV-D68, a respiratory EV, and EV-D94, an enteric EV, represent an interesting paradigm of EV tropism heterogeneity. They belong to the same species, but display distinct phenotypic characteristics and in vivo tropism. Here, we used these two viruses as well as relevant 3D respiratory, intestinal and neural tissue culture models, to highlight key distinctive features of enteric and respiratory EVs. We emphasize the critical role of temperature in restricting EV-D68 tissue tropism. Using transcriptomic analysis, we underscore fundamental differences between intestinal and respiratory tissues, both in the steady-state and in response to infection. Intestinal tissues present higher cell proliferation rate and are more immunotolerant than respiratory tissues. Importantly, we highlight the different strategies applied by EV-D94 and EV-D68 towards the host antiviral response of intestinal and respiratory tissues. EV-D68 strongly activates antiviral pathways while EV-D94, on the contrary, barely induces any host defense mechanisms. In summary, our study provides an insightful characterization of the differential pathogenesis of EV-D68 and EV-D94 and the interplay with their main target tissues.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antigens, Viral
  • Antiviral Agents
  • Enterovirus D, Human* / physiology
  • Enterovirus Infections*
  • Enterovirus*
  • Humans
  • Respiratory Tract Infections*
  • Tropism

Substances

  • Antigens, Viral
  • Antiviral Agents

Grants and funding

This work was funded by the Swiss National Science Foundation (Grant No. 310030_184777 to CT) and the University of Geneva Faculty of Medicine for IP and CT Salary. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.