Evidence of innate lymphoid cell redundancy in humans

Frédéric Vély, Vincent Barlogis, Blandine Vallentin, Bénédicte Neven, Christelle Piperoglou, Mikael Ebbo, Thibaut Perchet, Maxime Petit, Nadia Yessaad, Fabien Touzot, Julie Bruneau, Nizar Mahlaoui, Nicolas Zucchini, Catherine Farnarier, Gérard Michel, Despina Moshous, Stéphane Blanche, Arnaud Dujardin, Hergen Spits, Jörg H. W. DistlerAndreas Ramming, Capucine Picard, Rachel Golub, Alain Fischer, Eric Vivier

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247 Citations (Scopus)

Abstract

Innate lymphoid cells (ILCs) have potent immunological functions in experimental conditions in mice, but their contributions to immunity in natural conditions in humans have remained unclear. We investigated the presence of ILCs in a cohort of patients with severe combined immunodeficiency (SCID). All ILC subsets were absent in patients with SCID who had mutation of the gene encoding the common γ-chain cytokine receptor subunit IL-2Rγ or the gene encoding the tyrosine kinase JAK3. T cell reconstitution was observed in patients with SCID after hematopoietic stem cell transplantation (HSCT), but the patients still had considerably fewer ILCs in the absence of myeloablation than did healthy control subjects, with the exception of rare cases of reconstitution of the ILC1 subset of ILCs. Notably, the ILC deficiencies observed were not associated with any particular susceptibility to disease, with follow-up extending from 7 years to 39 years after HSCT. We thus report here selective ILC deficiency in humans and show that ILCs might be dispensable in natural conditions, if T cells are present and B cell function is preserved
Original languageEnglish
Pages (from-to)1291-1299
JournalNature immunology
Volume17
Issue number11
DOIs
Publication statusPublished - 2016

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