IL-7–dependent and –independent lineages of IL-7R–dependent human T cells - Laboratoire Chrono Environnement (UMR 6249)
Article Dans Une Revue The Journal of clinical investigation Année : 2024

IL-7–dependent and –independent lineages of IL-7R–dependent human T cells

Carlos Arango-Franco (1, 2, 3) , Masato Ogishi (4) , Susanne Unger (5) , Ottavia Delmonte (6) , Julio César Orrego (3) , Ahmad Yatim (6) , Margarita Velasquez-Lopera (3) , Andrés Zea-Vera (6, 7, 8) , Jonathan Bohlen (1, 2) , Marwa Chbihi (1, 2) , Antoine Fayand (1, 2) , Juan Pablo Sánchez (3) , Julian Rojas (3) , Yoann Seeleuthner (1, 2) , Tom Le Voyer (1, 2) , Quentin Philippot (1, 2) , Kathryn Payne (5) , Adrian Gervais (1, 2) , Lucia Erazo-Borrás (1, 2, 3) , Luis Correa-Londoño (3) , Axel Cederholm (9) , Alejandro Gallón-Duque (3) , Pedro Gonçalves (10) , Jean-Marc Doisne (10) , Liran Horev (11, 12) , Bénédicte Charmeteau-de Muylder (13) , Jesús Á. Álvarez (3) , Diana Arboleda (3) , Lizet Pérez-Zapata (3) , Estefanía Vásquez-Echeverri (3) , Marcela Moncada-Vélez (3, 4) , Juan López (3) , Yolanda Caicedo (14) , Boaz Palterer (6) , Pablo Patiño (3) , Carlos Montoya (3) , Matthieu Chaldebas (4) , Peng Zhang (1, 15, 4) , Tina Nguyen (16, 17) , Cindy Ma (16, 17) , Mohamed Jeljeli (18) , Juan Alzate (3) , Felipe Cabarcas (3) , Taushif Khan (19, 20) , Darawan Rinchai (4) , Jean-Luc Prétet (21, 22) , Bertrand Boisson (1, 2, 4) , Nico Marr (19, 20) , Ruba Ibrahim (11, 12) , Vered Molho-Pessach (11, 12) , Stéphanie Boisson-Dupuis (1, 2, 4) , Dimitra Kiritsi (23) , João Barata (24) , Nils Landegren (9) , Bénédicte Neven (25) , Laurent Abel (1, 2, 4) , Andrea Lisco (6) , Vivien Béziat (1, 2, 4) , Emmanuelle Jouanguy (1, 2, 4) , Jacinta Bustamante (1, 2, 4) , James Di Santo (10) , Stuart Tangye (16, 17) , Luigi Notarangelo (6) , Rémi Cheynier (13) , Ken Natsuga (26) , Andrés Arias (3, 4) , José Luis Franco (3) , Klaus Warnatz (5) , Jean-Laurent Casanova (1, 2, 4, 27) , Anne Puel (1, 2, 4)
Masato Ogishi
Axel Cederholm
Pedro Gonçalves
Jean-Marc Doisne
Darawan Rinchai
James Di Santo
Rémi Cheynier
  • Fonction : Auteur
Ken Natsuga

Résumé

Infants with biallelic IL7R loss-of-function variants have severe combined immune deficiency (SCID) characterized by the absence of autologous T lymphocytes, but normal counts of circulating B and NK cells (T-B+NK+ SCID). We report 6 adults (aged 22 to 59 years) from 4 kindreds and 3 ancestries (Colombian, Israeli Arab, Japanese) carrying homozygous IL7 loss-of-function variants resulting in combined immunodeficiency (CID). Deep immunophenotyping revealed relatively normal counts and/or proportions of myeloid, B, NK, and innate lymphoid cells. By contrast, the patients had profound T cell lymphopenia, with low proportions of innate-like adaptive mucosal-associated invariant T and invariant NK T cells. They also had low blood counts of T cell receptor (TCR) excision circles, recent thymic emigrant T cells and naive CD4+ T cells, and low overall TCR repertoire diversity, collectively indicating impaired thymic output. The proportions of effector memory CD4+ and CD8+ T cells were high, indicating IL-7-independent homeostatic T cell proliferation in the periphery. Intriguingly, the proportions of other T cell subsets, including TCRγδ+ T cells and some TCRαβ+ T cell subsets (including Th1, Tfh, and Treg) were little affected. Peripheral CD4+ T cells displayed poor proliferation, but normal cytokine production upon stimulation with mitogens in vitro. Thus, inherited IL-7 deficiency impairs T cell development less severely and in a more subset-specific manner than IL-7R deficiency. These findings suggest that another IL-7R-binding cytokine, possibly thymic stromal lymphopoietin, governs an IL-7-independent pathway of human T cell development.
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hal-04752101 , version 1 (25-10-2024)

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Carlos Arango-Franco, Masato Ogishi, Susanne Unger, Ottavia Delmonte, Julio César Orrego, et al.. IL-7–dependent and –independent lineages of IL-7R–dependent human T cells. The Journal of clinical investigation, 2024, 134 (19), pp.e180251. ⟨10.1172/JCI180251⟩. ⟨hal-04752101⟩
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