Browsing by Subject "Innate immunity and inflammation"

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    Heterozygous BTNL8 variants in individuals with multisystem inflammatory syndrome in children (MIS-C)
    (Rockefeller University Press, 2024-11-22) Bellos, Evangelos; Santillo, Dilys; Vantourout, Pierre; Jackson, Heather R.; Duret, Amedine; Hearn, Henry; Seeleuthner, Yoann; Talouarn, Estelle; Hodeib, Stephanie; Patel, Harsita; Powell, Oliver; Yeoh, Sophya; Mustafa, Sobia; Habgood-coote, Dominic; Nichols, Samuel; Elorrieta, Leire Estramiana; D’souza, Giselle; Wright, Victoria J.; Estrada-rivadeneyra, Diego; Tremoulet, Adriana H.; Dummer, Kirsten B.; Netea, Stejara A.; Condino-neto, Antonio; Lau, Yu Lung; Cuadros, Esmeralda Núñez; Toubiana, Julie; Pena, Marisol Holanda; Rieux-laucat, Frédéric; Luyt, Charles-edouard; Haerynck, Filomeen; Mège, Jean Louis; Chakravorty, Samya; Haddad, Elie; Morin, Marie-paule; Akcan, Özge Metin; Keles, Sevgi; Emiroglu, Melike; Alkan, Gulsum; Öz, Sadiye Kübra Tüter; Bozdemir, Sefika Elmas; Morelle, Guillaume; Volokha, Alla; Kendir-demirkol, Yasemin; Sözeri, Betul; Coskuner, Taner; Gulhan, Aysun Yahsi, Belgin; Kanik-yuksek, Saliha; Bayhan, Gulsum Iclal; Ozkaya-parlakay, Aslinur; Yesilbas, Osman; Hatipoglu, Nevin; Özçelik, Tayfun; Belot, Alexandre; Chopin, Emilie; Barlogis, Vincent; Sevketoglu, Esra; Menentoglu, Emin; Aydin, Zeynep Gokce Gayretli; Bloomfield, Marketa; Alkhater, Suzan A.; Cyrus, Cyril; Stepanovskiy, Yuriy; Bondarenko, Anastasiia; Öz, Fatma Nur; Polat, Meltem; Fremuth, Jiří; Lebl, Jan; Geraldo, Amyrath; Jouanguy, Emmanuelle; Carter, Michael J.; Wellman, Paul; Peters, Mark; Diego, Rebeca Pérez De; Edwards, Lindsey Ann; Chiu, Christopher; Noursadeghi, Mahdad; Bolze, Alexandre; Shimizu, Chisato; Kaforou, Myrsini; Hamilton, Melissa Shea; Herberg, Jethro A.; Schmitt, Erica G.; Rodriguez-palmero, Agusti; Pujol, Aurora; Kim, Jihoon; Cobat, Aurélie; Abel, Laurent; Zhang, Shen-ying; Casanova, Jean-laurent; Kuijpers, Taco W.; Burns, Jane C.; Levin, Michael; Hayday, Adrian C.; Sancho-shimizu, Vanessa
    Multisystem inflammatory syndrome in children (MIS-C) is a rare condition following SARS-CoV-2 infection associated with intestinal manifestations. Genetic predisposition, including inborn errors of the OAS-RNAseL pathway, has been reported. We sequenced 154 MIS-C patients and utilized a novel statistical framework of gene burden analysis, “burdenMC,” which identified an enrichment for rare predicted-deleterious variants in BTNL8 (OR = 4.2, 95% CI: 3.5-5.3, P < 10-6). BTNL8 encodes an intestinal epithelial regulator of Vγ4+γδ T cells implicated in regulating gut homeostasis. Enrichment was exclusive to MIS-C, being absent in patients with COVID-19 or bacterial disease. Using an available functional test for BTNL8, rare variants from a larger cohort of MIS-C patients (n = 835) were tested which identified eight variants in 18 patients (2.2%) with impaired engagement of Vγ4+γδ T cells. Most of these variants were in the B30.2 domain of BTNL8 implicated in sensing epithelial cell status. These findings were associated with altered intestinal permeability, suggesting a possible link between disrupted gut homeostasis and MIS-C-associated enteropathy triggered by SARS-CoV-2.
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    ItemOpen Access
    Higher COVID-19 pneumonia risk associated with anti-IFN-α than with anti-IFN-ω auto-Abs in children
    (Rockefeller University Press, 2024-01-04) Bastard, Paul; Gervais, Adrian; Taniguchi, Maki; Saare, Liisa; Särekannu, Karita; Voyer, Tom le; Philippot, Quentin; Rosain, Jeremie; Bizien, Lucy; Asano, Takaki; Garcia-Prat, Marina; Parra-Martínez, Alba; Migaud, Mélanie; Tsumura, Miyuki; Conti, Francesca; Belot, Alexandre; Rivière, Jacques G.; Morio, Tomohiro; Tanaka, Junko; Javouhey, Etienne; Haerynck, Filomeen; Duvlis, Sotirija; Özçelik, Tayfun; Keles, Sevgi; Redondo, yacine tandjaoui-lambiotte; Escoda, Simon; Husain, Maya; Pan-Hammarström, Qiang; Hammarström, Lennart; Gloria, Ahlijah; Haidar, Anthony ABI; Soudee, Camille; Abolhassani, Hassan; Sahanic, Sabina; Tancevski, Ivan; Nukui, Yoko; Hayakawa, Seiichi; Chrousos, George P.; Michos, Athanasios; Tatsi, Elizabeth; Filippatos, Filippos; Rodriguez-Palmero, Agusti; García, Jesús Troya; Tipu, Imran; Meyts, Isabelle; Roussel, Lucie; Ostrowski, Sisse Rye; Schidlowski, Laire; Prando, Carolina; Condino-Neto, Antonio; Cheikh, Nathalie; Bousfiha, Ahmed Aziz; Bakkouri, Jalila EL; Peterson, Pärt; Pujol, Aurora; Lévy, Romain; Quartier, Pierre; Vinh, Donald C.; Boisson, Bertrand; Béziat, Vivien; Zhang, Shen-Ying; Borghesi, Alessandro; Pession, Andrea; Andreakos, Evangelos; Marr, Nico; Mentis, Alexios-Fotios; Mogensen, Trine Hyrup; Rodríguez-Gallego, Carlos; Soler-Palacín, Pere; Colobran, Roger; Tillmann, Vallo; Neven, Benedicte; Trouillet-Assant, Sophie; Brodin, Petter; Abel, Laurent; Jouanguy, Emmanuelle; Zhang, Qian; Martinon-Torres, Federico; Salas, Antonio; Gómez-Carballa, Alberto; Gonzalez-Granado, Luis Ignacio; Kisand, Kai; Okada, Satoshi; Puel, Anne; Cobat, Aurélie; Casanova, Jean-Laurent
    We found that 19 (10.4%) of 183 unvaccinated children hospitalized for COVID-19 pneumonia had autoantibodies (auto-Abs) neutralizing type I IFNs (IFN-alpha 2 in 10 patients: IFN-alpha 2 only in three, IFN-alpha 2 plus IFN-omega in five, and IFN-alpha 2, IFN-omega plus IFN-beta in two; IFN-omega only in nine patients). Seven children (3.8%) had Abs neutralizing at least 10 ng/ml of one IFN, whereas the other 12 (6.6%) had Abs neutralizing only 100 pg/ml. The auto-Abs neutralized both unglycosylated and glycosylated IFNs. We also detected auto-Abs neutralizing 100 pg/ml IFN-alpha 2 in 4 of 2,267 uninfected children (0.2%) and auto-Abs neutralizing IFN-omega in 45 children (2%). The odds ratios (ORs) for life-threatening COVID-19 pneumonia were, therefore, higher for auto-Abs neutralizing IFN-alpha 2 only (OR [95% CI] = 67.6 [5.7-9,196.6]) than for auto-Abs neutralizing IFN-. only (OR [95% CI] = 2.6 [1.2-5.3]). ORs were also higher for auto-Abs neutralizing high concentrations (OR [95% CI] = 12.9 [4.6-35.9]) than for those neutralizing low concentrations (OR [95% CI] = 5.5 [3.1-9.6]) of IFN-omega and/or IFN-alpha 2.
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    ItemOpen Access
    Human STAT3 variants underlie autosomal dominant hyper-IgE syndrome by negative dominance
    (Rockefeller University Press, 2021-06-17) Asano, T.; Khourieh, J.; Zhang, P.; Rapaport, F.; Spaan, A. N.; Li, J.; Lei, W. T.; Pelham, S. J.; Hum, D.; Chrabieh, M.; Han, J. E.; Guérin, A.; Mackie, J.; Gupta, S.; Saikia, B.; Baghdadi, J. E. I.; Fadil, I.; Bousfiha, A.; Habib, T.; Marr, N.; Ganeshanandan, L.; Peake, J.; Droney, L.; Williams, A.; Celmeli, F.; Hatipoglu, N.; Özçelik, Tayfun; Picard, C.
    Most patients with autosomal dominant hyper-IgE syndrome (AD-HIES) carry rare heterozygous STAT3 variants. Only six of the 135 in-frame variants reported have been experimentally shown to be dominant negative (DN), and it has been recently suggested that eight out-of-frame variants operate by haploinsufficiency. We experimentally tested these 143 variants, 7 novel out-of-frame variants found in HIES patients, and other STAT3 variants from the general population. Strikingly, all 15 out-of-frame variants were DN via their encoded (1) truncated proteins, (2) neoproteins generated from a translation reinitiation codon, and (3) isoforms from alternative transcripts or a combination thereof. Moreover, 128 of the 135 in-frame variants (95%) were also DN. The patients carrying the seven non-DN STAT3 in-frame variants have not been studied for other genetic etiologies. Finally, none of the variants from the general population tested, including an out-of-frame variant, were DN. Overall, our findings show that heterozygous STAT3 variants, whether in or out of frame, underlie AD-HIES through negative dominance rather than haploinsufficiency.