Replication of Influenza A Virus in Secondary Lymphatic Tissue Contributes to Innate Immune Activation

Friedrich SK, Schmitz R, Bergerhausen M, Lang J, Duhan V, Hardt C, Tenbusch M, Prinz M, Asano K, Bhat H, Hamdan TA, Lang PA, Lang KS (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Pathogens MDPI

Book Volume: 10

Journal Issue: 5

DOI: 10.3390/pathogens10050622

Abstract

The replication of viruses in secondary lymphoid organs guarantees sufficient amounts of pattern-recognition receptor ligands and antigens to activate the innate and adaptive immune system. Viruses with broad cell tropism usually replicate in lymphoid organs; however, whether a virus with a narrow tropism relies on replication in the secondary lymphoid organs to activate the immune system remains not well studied. In this study, we used the artificial intravenous route of infection to determine whether Influenza A virus (IAV) replication can occur in secondary lymphatic organs (SLO) and whether such replication correlates with innate immune activation. Indeed, we found that IAV replicates in secondary lymphatic tissue. IAV replication was dependent on the expression of Sialic acid residues in antigen-presenting cells and on the expression of the interferon-inhibitor UBP43 (Usp18). The replication of IAV correlated with innate immune activation, resulting in IAV eradication. The genetic deletion of Usp18 curbed IAV replication and limited innate immune activation. In conclusion, we found that IAV replicates in SLO, a mechanism which allows innate immune activation.

Authors with CRIS profile

Matthias Tenbusch Professur für Genbasierte Immunisierungsverfahren

Involved external institutions

Universität Duisburg-Essen (UDE) DE Germany (DE) Albert-Ludwigs-Universität Freiburg DE Germany (DE) University of Tokyo JP Japan (JP) Heinrich-Heine-Universität Düsseldorf DE Germany (DE)

How to cite

APA:

Friedrich, S.-K., Schmitz, R., Bergerhausen, M., Lang, J., Duhan, V., Hardt, C.,... Lang, K.S. (2021). Replication of Influenza A Virus in Secondary Lymphatic Tissue Contributes to Innate Immune Activation. Pathogens, 10(5). https://doi.org/10.3390/pathogens10050622

MLA:

Friedrich, Sarah-Kim, et al. "Replication of Influenza A Virus in Secondary Lymphatic Tissue Contributes to Innate Immune Activation." Pathogens 10.5 (2021).

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