Constitutive resistance to viral infection in human CD141+ dendritic cells

Aymeric Silvin, Chun I. Yu, Xavier Lahaye, Francesco Imperatore, Jean Baptiste Brault, Sylvain Cardinaud, Christian Becker, Wing Hong Kwan, Cécile Conrad, Mathieu Maurin, Christel Goudot, Santy Marques-Ladeira, Yuanyuan Wang, Virginia Pascual, Esperanza Anguiano, Randy A. Albrecht, Matteo Iannacone, Adolfo García-Sastre, Bruno Goud, Marc DalodArnaud Moris, Miriam Merad, A. Karolina Palucka, Nicolas Manel

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

Dendritic cells (DCs) are critical for the launching of protective T cell immunity in response to viral infection. Viruses can directly infect DCs, thereby compromising their viability and suppressing their ability to activate immune responses. How DC function is maintained in light of this paradox is not understood. By analyzing the susceptibility of primary human DC subsets to viral infections, we report that CD141+ DCs have an innate resistance to infection by a broad range of enveloped viruses, including HIV and influenza virus. In contrast, CD1c+ DCs are susceptible to infection, which enables viral antigen production but impairs their immune functions and survival. The ability of CD141+ DCs to resist infection is conferred by RAB15, a vesicle-trafficking protein constitutively expressed in this DC subset. We show that CD141+ DCs rely on viral antigens produced in bystander cells to launch cross-presentation–driven T cell responses. By dissociating viral infection from antigen presentation, this mechanism protects the functional capacity of DCs to launch adaptive immunity against viral infection.

Original languageEnglish
Article numbereaai8071
JournalScience immunology
Volume2
Issue number13
DOIs
StatePublished - 2017

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